CONFIG_SLAVIO=y
CONFIG_CS4231=y
CONFIG_GRLIB=y
+CONFIG_STP2000=y
+CONFIG_SUN4M=y
obj-y += exynos4210_pmu.o
obj-y += a15mpcore.o
obj-y += armv7m_nvic.o
-obj-y += pxa2xx_dma.o
obj-y += pxa2xx_pcmcia.o
obj-y += zaurus.o
-obj-y += omap_dma.o omap_clk.o \
- omap_gpio.o omap_intc.o
-obj-y += soc_dma.o \
- omap_gpmc.o omap_sdrc.o omap_tap.o omap_l4.o
+obj-y += omap_clk.o omap_gpio.o omap_intc.o
+obj-y += omap_gpmc.o omap_sdrc.o omap_tap.o omap_l4.o
obj-y += cbus.o
obj-y += mst_fpga.o
obj-y += strongarm.o
# IO blocks
-obj-y += etraxfs_dma.o
obj-y += etraxfs_pic.o
obj-y := $(addprefix ../,$(obj-y))
common-obj-$(CONFIG_I82374) += i82374.o
common-obj-$(CONFIG_I8257) += i8257.o
common-obj-$(CONFIG_XILINX_AXI) += xilinx_axidma.o
+common-obj-$(CONFIG_ETRAXFS) += etraxfs_dma.o
+common-obj-$(CONFIG_STP2000) += sparc32_dma.o
+common-obj-$(CONFIG_SUN4M) += sun4m_iommu.o
+
+obj-$(CONFIG_OMAP) += omap_dma.o soc_dma.o
+obj-$(CONFIG_PXA2XX) += pxa2xx_dma.o
--- /dev/null
+/*
+ * QEMU ETRAX DMA Controller.
+ *
+ * Copyright (c) 2008 Edgar E. Iglesias, Axis Communications AB.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdio.h>
+#include <sys/time.h>
+#include "hw/hw.h"
+#include "exec/address-spaces.h"
+#include "qemu-common.h"
+#include "sysemu/sysemu.h"
+
+#include "hw/cris/etraxfs_dma.h"
+
+#define D(x)
+
+#define RW_DATA (0x0 / 4)
+#define RW_SAVED_DATA (0x58 / 4)
+#define RW_SAVED_DATA_BUF (0x5c / 4)
+#define RW_GROUP (0x60 / 4)
+#define RW_GROUP_DOWN (0x7c / 4)
+#define RW_CMD (0x80 / 4)
+#define RW_CFG (0x84 / 4)
+#define RW_STAT (0x88 / 4)
+#define RW_INTR_MASK (0x8c / 4)
+#define RW_ACK_INTR (0x90 / 4)
+#define R_INTR (0x94 / 4)
+#define R_MASKED_INTR (0x98 / 4)
+#define RW_STREAM_CMD (0x9c / 4)
+
+#define DMA_REG_MAX (0x100 / 4)
+
+/* descriptors */
+
+// ------------------------------------------------------------ dma_descr_group
+typedef struct dma_descr_group {
+ uint32_t next;
+ unsigned eol : 1;
+ unsigned tol : 1;
+ unsigned bol : 1;
+ unsigned : 1;
+ unsigned intr : 1;
+ unsigned : 2;
+ unsigned en : 1;
+ unsigned : 7;
+ unsigned dis : 1;
+ unsigned md : 16;
+ struct dma_descr_group *up;
+ union {
+ struct dma_descr_context *context;
+ struct dma_descr_group *group;
+ } down;
+} dma_descr_group;
+
+// ---------------------------------------------------------- dma_descr_context
+typedef struct dma_descr_context {
+ uint32_t next;
+ unsigned eol : 1;
+ unsigned : 3;
+ unsigned intr : 1;
+ unsigned : 1;
+ unsigned store_mode : 1;
+ unsigned en : 1;
+ unsigned : 7;
+ unsigned dis : 1;
+ unsigned md0 : 16;
+ unsigned md1;
+ unsigned md2;
+ unsigned md3;
+ unsigned md4;
+ uint32_t saved_data;
+ uint32_t saved_data_buf;
+} dma_descr_context;
+
+// ------------------------------------------------------------- dma_descr_data
+typedef struct dma_descr_data {
+ uint32_t next;
+ uint32_t buf;
+ unsigned eol : 1;
+ unsigned : 2;
+ unsigned out_eop : 1;
+ unsigned intr : 1;
+ unsigned wait : 1;
+ unsigned : 2;
+ unsigned : 3;
+ unsigned in_eop : 1;
+ unsigned : 4;
+ unsigned md : 16;
+ uint32_t after;
+} dma_descr_data;
+
+/* Constants */
+enum {
+ regk_dma_ack_pkt = 0x00000100,
+ regk_dma_anytime = 0x00000001,
+ regk_dma_array = 0x00000008,
+ regk_dma_burst = 0x00000020,
+ regk_dma_client = 0x00000002,
+ regk_dma_copy_next = 0x00000010,
+ regk_dma_copy_up = 0x00000020,
+ regk_dma_data_at_eol = 0x00000001,
+ regk_dma_dis_c = 0x00000010,
+ regk_dma_dis_g = 0x00000020,
+ regk_dma_idle = 0x00000001,
+ regk_dma_intern = 0x00000004,
+ regk_dma_load_c = 0x00000200,
+ regk_dma_load_c_n = 0x00000280,
+ regk_dma_load_c_next = 0x00000240,
+ regk_dma_load_d = 0x00000140,
+ regk_dma_load_g = 0x00000300,
+ regk_dma_load_g_down = 0x000003c0,
+ regk_dma_load_g_next = 0x00000340,
+ regk_dma_load_g_up = 0x00000380,
+ regk_dma_next_en = 0x00000010,
+ regk_dma_next_pkt = 0x00000010,
+ regk_dma_no = 0x00000000,
+ regk_dma_only_at_wait = 0x00000000,
+ regk_dma_restore = 0x00000020,
+ regk_dma_rst = 0x00000001,
+ regk_dma_running = 0x00000004,
+ regk_dma_rw_cfg_default = 0x00000000,
+ regk_dma_rw_cmd_default = 0x00000000,
+ regk_dma_rw_intr_mask_default = 0x00000000,
+ regk_dma_rw_stat_default = 0x00000101,
+ regk_dma_rw_stream_cmd_default = 0x00000000,
+ regk_dma_save_down = 0x00000020,
+ regk_dma_save_up = 0x00000020,
+ regk_dma_set_reg = 0x00000050,
+ regk_dma_set_w_size1 = 0x00000190,
+ regk_dma_set_w_size2 = 0x000001a0,
+ regk_dma_set_w_size4 = 0x000001c0,
+ regk_dma_stopped = 0x00000002,
+ regk_dma_store_c = 0x00000002,
+ regk_dma_store_descr = 0x00000000,
+ regk_dma_store_g = 0x00000004,
+ regk_dma_store_md = 0x00000001,
+ regk_dma_sw = 0x00000008,
+ regk_dma_update_down = 0x00000020,
+ regk_dma_yes = 0x00000001
+};
+
+enum dma_ch_state
+{
+ RST = 1,
+ STOPPED = 2,
+ RUNNING = 4
+};
+
+struct fs_dma_channel
+{
+ qemu_irq irq;
+ struct etraxfs_dma_client *client;
+
+ /* Internal status. */
+ int stream_cmd_src;
+ enum dma_ch_state state;
+
+ unsigned int input : 1;
+ unsigned int eol : 1;
+
+ struct dma_descr_group current_g;
+ struct dma_descr_context current_c;
+ struct dma_descr_data current_d;
+
+ /* Control registers. */
+ uint32_t regs[DMA_REG_MAX];
+};
+
+struct fs_dma_ctrl
+{
+ MemoryRegion mmio;
+ int nr_channels;
+ struct fs_dma_channel *channels;
+
+ QEMUBH *bh;
+};
+
+static void DMA_run(void *opaque);
+static int channel_out_run(struct fs_dma_ctrl *ctrl, int c);
+
+static inline uint32_t channel_reg(struct fs_dma_ctrl *ctrl, int c, int reg)
+{
+ return ctrl->channels[c].regs[reg];
+}
+
+static inline int channel_stopped(struct fs_dma_ctrl *ctrl, int c)
+{
+ return channel_reg(ctrl, c, RW_CFG) & 2;
+}
+
+static inline int channel_en(struct fs_dma_ctrl *ctrl, int c)
+{
+ return (channel_reg(ctrl, c, RW_CFG) & 1)
+ && ctrl->channels[c].client;
+}
+
+static inline int fs_channel(hwaddr addr)
+{
+ /* Every channel has a 0x2000 ctrl register map. */
+ return addr >> 13;
+}
+
+#ifdef USE_THIS_DEAD_CODE
+static void channel_load_g(struct fs_dma_ctrl *ctrl, int c)
+{
+ hwaddr addr = channel_reg(ctrl, c, RW_GROUP);
+
+ /* Load and decode. FIXME: handle endianness. */
+ cpu_physical_memory_read (addr,
+ (void *) &ctrl->channels[c].current_g,
+ sizeof ctrl->channels[c].current_g);
+}
+
+static void dump_c(int ch, struct dma_descr_context *c)
+{
+ printf("%s ch=%d\n", __func__, ch);
+ printf("next=%x\n", c->next);
+ printf("saved_data=%x\n", c->saved_data);
+ printf("saved_data_buf=%x\n", c->saved_data_buf);
+ printf("eol=%x\n", (uint32_t) c->eol);
+}
+
+static void dump_d(int ch, struct dma_descr_data *d)
+{
+ printf("%s ch=%d\n", __func__, ch);
+ printf("next=%x\n", d->next);
+ printf("buf=%x\n", d->buf);
+ printf("after=%x\n", d->after);
+ printf("intr=%x\n", (uint32_t) d->intr);
+ printf("out_eop=%x\n", (uint32_t) d->out_eop);
+ printf("in_eop=%x\n", (uint32_t) d->in_eop);
+ printf("eol=%x\n", (uint32_t) d->eol);
+}
+#endif
+
+static void channel_load_c(struct fs_dma_ctrl *ctrl, int c)
+{
+ hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
+
+ /* Load and decode. FIXME: handle endianness. */
+ cpu_physical_memory_read (addr,
+ (void *) &ctrl->channels[c].current_c,
+ sizeof ctrl->channels[c].current_c);
+
+ D(dump_c(c, &ctrl->channels[c].current_c));
+ /* I guess this should update the current pos. */
+ ctrl->channels[c].regs[RW_SAVED_DATA] =
+ (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data;
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
+ (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data_buf;
+}
+
+static void channel_load_d(struct fs_dma_ctrl *ctrl, int c)
+{
+ hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA);
+
+ /* Load and decode. FIXME: handle endianness. */
+ D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
+ cpu_physical_memory_read (addr,
+ (void *) &ctrl->channels[c].current_d,
+ sizeof ctrl->channels[c].current_d);
+
+ D(dump_d(c, &ctrl->channels[c].current_d));
+ ctrl->channels[c].regs[RW_DATA] = addr;
+}
+
+static void channel_store_c(struct fs_dma_ctrl *ctrl, int c)
+{
+ hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
+
+ /* Encode and store. FIXME: handle endianness. */
+ D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
+ D(dump_d(c, &ctrl->channels[c].current_d));
+ cpu_physical_memory_write (addr,
+ (void *) &ctrl->channels[c].current_c,
+ sizeof ctrl->channels[c].current_c);
+}
+
+static void channel_store_d(struct fs_dma_ctrl *ctrl, int c)
+{
+ hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA);
+
+ /* Encode and store. FIXME: handle endianness. */
+ D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
+ cpu_physical_memory_write (addr,
+ (void *) &ctrl->channels[c].current_d,
+ sizeof ctrl->channels[c].current_d);
+}
+
+static inline void channel_stop(struct fs_dma_ctrl *ctrl, int c)
+{
+ /* FIXME: */
+}
+
+static inline void channel_start(struct fs_dma_ctrl *ctrl, int c)
+{
+ if (ctrl->channels[c].client)
+ {
+ ctrl->channels[c].eol = 0;
+ ctrl->channels[c].state = RUNNING;
+ if (!ctrl->channels[c].input)
+ channel_out_run(ctrl, c);
+ } else
+ printf("WARNING: starting DMA ch %d with no client\n", c);
+
+ qemu_bh_schedule_idle(ctrl->bh);
+}
+
+static void channel_continue(struct fs_dma_ctrl *ctrl, int c)
+{
+ if (!channel_en(ctrl, c)
+ || channel_stopped(ctrl, c)
+ || ctrl->channels[c].state != RUNNING
+ /* Only reload the current data descriptor if it has eol set. */
+ || !ctrl->channels[c].current_d.eol) {
+ D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n",
+ c, ctrl->channels[c].state,
+ channel_stopped(ctrl, c),
+ channel_en(ctrl,c),
+ ctrl->channels[c].eol));
+ D(dump_d(c, &ctrl->channels[c].current_d));
+ return;
+ }
+
+ /* Reload the current descriptor. */
+ channel_load_d(ctrl, c);
+
+ /* If the current descriptor cleared the eol flag and we had already
+ reached eol state, do the continue. */
+ if (!ctrl->channels[c].current_d.eol && ctrl->channels[c].eol) {
+ D(printf("continue %d ok %x\n", c,
+ ctrl->channels[c].current_d.next));
+ ctrl->channels[c].regs[RW_SAVED_DATA] =
+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.next;
+ channel_load_d(ctrl, c);
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
+
+ channel_start(ctrl, c);
+ }
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
+}
+
+static void channel_stream_cmd(struct fs_dma_ctrl *ctrl, int c, uint32_t v)
+{
+ unsigned int cmd = v & ((1 << 10) - 1);
+
+ D(printf("%s ch=%d cmd=%x\n",
+ __func__, c, cmd));
+ if (cmd & regk_dma_load_d) {
+ channel_load_d(ctrl, c);
+ if (cmd & regk_dma_burst)
+ channel_start(ctrl, c);
+ }
+
+ if (cmd & regk_dma_load_c) {
+ channel_load_c(ctrl, c);
+ }
+}
+
+static void channel_update_irq(struct fs_dma_ctrl *ctrl, int c)
+{
+ D(printf("%s %d\n", __func__, c));
+ ctrl->channels[c].regs[R_INTR] &=
+ ~(ctrl->channels[c].regs[RW_ACK_INTR]);
+
+ ctrl->channels[c].regs[R_MASKED_INTR] =
+ ctrl->channels[c].regs[R_INTR]
+ & ctrl->channels[c].regs[RW_INTR_MASK];
+
+ D(printf("%s: chan=%d masked_intr=%x\n", __func__,
+ c,
+ ctrl->channels[c].regs[R_MASKED_INTR]));
+
+ qemu_set_irq(ctrl->channels[c].irq,
+ !!ctrl->channels[c].regs[R_MASKED_INTR]);
+}
+
+static int channel_out_run(struct fs_dma_ctrl *ctrl, int c)
+{
+ uint32_t len;
+ uint32_t saved_data_buf;
+ unsigned char buf[2 * 1024];
+
+ struct dma_context_metadata meta;
+ bool send_context = true;
+
+ if (ctrl->channels[c].eol)
+ return 0;
+
+ do {
+ bool out_eop;
+ D(printf("ch=%d buf=%x after=%x\n",
+ c,
+ (uint32_t)ctrl->channels[c].current_d.buf,
+ (uint32_t)ctrl->channels[c].current_d.after));
+
+ if (send_context) {
+ if (ctrl->channels[c].client->client.metadata_push) {
+ meta.metadata = ctrl->channels[c].current_d.md;
+ ctrl->channels[c].client->client.metadata_push(
+ ctrl->channels[c].client->client.opaque,
+ &meta);
+ }
+ send_context = false;
+ }
+
+ channel_load_d(ctrl, c);
+ saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
+ len = (uint32_t)(unsigned long)
+ ctrl->channels[c].current_d.after;
+ len -= saved_data_buf;
+
+ if (len > sizeof buf)
+ len = sizeof buf;
+ cpu_physical_memory_read (saved_data_buf, buf, len);
+
+ out_eop = ((saved_data_buf + len) ==
+ ctrl->channels[c].current_d.after) &&
+ ctrl->channels[c].current_d.out_eop;
+
+ D(printf("channel %d pushes %x %u bytes eop=%u\n", c,
+ saved_data_buf, len, out_eop));
+
+ if (ctrl->channels[c].client->client.push)
+ ctrl->channels[c].client->client.push(
+ ctrl->channels[c].client->client.opaque,
+ buf, len, out_eop);
+ else
+ printf("WARNING: DMA ch%d dataloss,"
+ " no attached client.\n", c);
+
+ saved_data_buf += len;
+
+ if (saved_data_buf == (uint32_t)(unsigned long)
+ ctrl->channels[c].current_d.after) {
+ /* Done. Step to next. */
+ if (ctrl->channels[c].current_d.out_eop) {
+ send_context = true;
+ }
+ if (ctrl->channels[c].current_d.intr) {
+ /* data intr. */
+ D(printf("signal intr %d eol=%d\n",
+ len, ctrl->channels[c].current_d.eol));
+ ctrl->channels[c].regs[R_INTR] |= (1 << 2);
+ channel_update_irq(ctrl, c);
+ }
+ channel_store_d(ctrl, c);
+ if (ctrl->channels[c].current_d.eol) {
+ D(printf("channel %d EOL\n", c));
+ ctrl->channels[c].eol = 1;
+
+ /* Mark the context as disabled. */
+ ctrl->channels[c].current_c.dis = 1;
+ channel_store_c(ctrl, c);
+
+ channel_stop(ctrl, c);
+ } else {
+ ctrl->channels[c].regs[RW_SAVED_DATA] =
+ (uint32_t)(unsigned long)ctrl->
+ channels[c].current_d.next;
+ /* Load new descriptor. */
+ channel_load_d(ctrl, c);
+ saved_data_buf = (uint32_t)(unsigned long)
+ ctrl->channels[c].current_d.buf;
+ }
+
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
+ saved_data_buf;
+ D(dump_d(c, &ctrl->channels[c].current_d));
+ }
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
+ } while (!ctrl->channels[c].eol);
+ return 1;
+}
+
+static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
+ unsigned char *buf, int buflen, int eop)
+{
+ uint32_t len;
+ uint32_t saved_data_buf;
+
+ if (ctrl->channels[c].eol == 1)
+ return 0;
+
+ channel_load_d(ctrl, c);
+ saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
+ len = (uint32_t)(unsigned long)ctrl->channels[c].current_d.after;
+ len -= saved_data_buf;
+
+ if (len > buflen)
+ len = buflen;
+
+ cpu_physical_memory_write (saved_data_buf, buf, len);
+ saved_data_buf += len;
+
+ if (saved_data_buf ==
+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.after
+ || eop) {
+ uint32_t r_intr = ctrl->channels[c].regs[R_INTR];
+
+ D(printf("in dscr end len=%d\n",
+ ctrl->channels[c].current_d.after
+ - ctrl->channels[c].current_d.buf));
+ ctrl->channels[c].current_d.after = saved_data_buf;
+
+ /* Done. Step to next. */
+ if (ctrl->channels[c].current_d.intr) {
+ /* TODO: signal eop to the client. */
+ /* data intr. */
+ ctrl->channels[c].regs[R_INTR] |= 3;
+ }
+ if (eop) {
+ ctrl->channels[c].current_d.in_eop = 1;
+ ctrl->channels[c].regs[R_INTR] |= 8;
+ }
+ if (r_intr != ctrl->channels[c].regs[R_INTR])
+ channel_update_irq(ctrl, c);
+
+ channel_store_d(ctrl, c);
+ D(dump_d(c, &ctrl->channels[c].current_d));
+
+ if (ctrl->channels[c].current_d.eol) {
+ D(printf("channel %d EOL\n", c));
+ ctrl->channels[c].eol = 1;
+
+ /* Mark the context as disabled. */
+ ctrl->channels[c].current_c.dis = 1;
+ channel_store_c(ctrl, c);
+
+ channel_stop(ctrl, c);
+ } else {
+ ctrl->channels[c].regs[RW_SAVED_DATA] =
+ (uint32_t)(unsigned long)ctrl->
+ channels[c].current_d.next;
+ /* Load new descriptor. */
+ channel_load_d(ctrl, c);
+ saved_data_buf = (uint32_t)(unsigned long)
+ ctrl->channels[c].current_d.buf;
+ }
+ }
+
+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
+ return len;
+}
+
+static inline int channel_in_run(struct fs_dma_ctrl *ctrl, int c)
+{
+ if (ctrl->channels[c].client->client.pull) {
+ ctrl->channels[c].client->client.pull(
+ ctrl->channels[c].client->client.opaque);
+ return 1;
+ } else
+ return 0;
+}
+
+static uint32_t dma_rinvalid (void *opaque, hwaddr addr)
+{
+ hw_error("Unsupported short raccess. reg=" TARGET_FMT_plx "\n", addr);
+ return 0;
+}
+
+static uint64_t
+dma_read(void *opaque, hwaddr addr, unsigned int size)
+{
+ struct fs_dma_ctrl *ctrl = opaque;
+ int c;
+ uint32_t r = 0;
+
+ if (size != 4) {
+ dma_rinvalid(opaque, addr);
+ }
+
+ /* Make addr relative to this channel and bounded to nr regs. */
+ c = fs_channel(addr);
+ addr &= 0xff;
+ addr >>= 2;
+ switch (addr)
+ {
+ case RW_STAT:
+ r = ctrl->channels[c].state & 7;
+ r |= ctrl->channels[c].eol << 5;
+ r |= ctrl->channels[c].stream_cmd_src << 8;
+ break;
+
+ default:
+ r = ctrl->channels[c].regs[addr];
+ D(printf ("%s c=%d addr=" TARGET_FMT_plx "\n",
+ __func__, c, addr));
+ break;
+ }
+ return r;
+}
+
+static void
+dma_winvalid (void *opaque, hwaddr addr, uint32_t value)
+{
+ hw_error("Unsupported short waccess. reg=" TARGET_FMT_plx "\n", addr);
+}
+
+static void
+dma_update_state(struct fs_dma_ctrl *ctrl, int c)
+{
+ if (ctrl->channels[c].regs[RW_CFG] & 2)
+ ctrl->channels[c].state = STOPPED;
+ if (!(ctrl->channels[c].regs[RW_CFG] & 1))
+ ctrl->channels[c].state = RST;
+}
+
+static void
+dma_write(void *opaque, hwaddr addr,
+ uint64_t val64, unsigned int size)
+{
+ struct fs_dma_ctrl *ctrl = opaque;
+ uint32_t value = val64;
+ int c;
+
+ if (size != 4) {
+ dma_winvalid(opaque, addr, value);
+ }
+
+ /* Make addr relative to this channel and bounded to nr regs. */
+ c = fs_channel(addr);
+ addr &= 0xff;
+ addr >>= 2;
+ switch (addr)
+ {
+ case RW_DATA:
+ ctrl->channels[c].regs[addr] = value;
+ break;
+
+ case RW_CFG:
+ ctrl->channels[c].regs[addr] = value;
+ dma_update_state(ctrl, c);
+ break;
+ case RW_CMD:
+ /* continue. */
+ if (value & ~1)
+ printf("Invalid store to ch=%d RW_CMD %x\n",
+ c, value);
+ ctrl->channels[c].regs[addr] = value;
+ channel_continue(ctrl, c);
+ break;
+
+ case RW_SAVED_DATA:
+ case RW_SAVED_DATA_BUF:
+ case RW_GROUP:
+ case RW_GROUP_DOWN:
+ ctrl->channels[c].regs[addr] = value;
+ break;
+
+ case RW_ACK_INTR:
+ case RW_INTR_MASK:
+ ctrl->channels[c].regs[addr] = value;
+ channel_update_irq(ctrl, c);
+ if (addr == RW_ACK_INTR)
+ ctrl->channels[c].regs[RW_ACK_INTR] = 0;
+ break;
+
+ case RW_STREAM_CMD:
+ if (value & ~1023)
+ printf("Invalid store to ch=%d "
+ "RW_STREAMCMD %x\n",
+ c, value);
+ ctrl->channels[c].regs[addr] = value;
+ D(printf("stream_cmd ch=%d\n", c));
+ channel_stream_cmd(ctrl, c, value);
+ break;
+
+ default:
+ D(printf ("%s c=%d " TARGET_FMT_plx "\n",
+ __func__, c, addr));
+ break;
+ }
+}
+
+static const MemoryRegionOps dma_ops = {
+ .read = dma_read,
+ .write = dma_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 4
+ }
+};
+
+static int etraxfs_dmac_run(void *opaque)
+{
+ struct fs_dma_ctrl *ctrl = opaque;
+ int i;
+ int p = 0;
+
+ for (i = 0;
+ i < ctrl->nr_channels;
+ i++)
+ {
+ if (ctrl->channels[i].state == RUNNING)
+ {
+ if (ctrl->channels[i].input) {
+ p += channel_in_run(ctrl, i);
+ } else {
+ p += channel_out_run(ctrl, i);
+ }
+ }
+ }
+ return p;
+}
+
+int etraxfs_dmac_input(struct etraxfs_dma_client *client,
+ void *buf, int len, int eop)
+{
+ return channel_in_process(client->ctrl, client->channel,
+ buf, len, eop);
+}
+
+/* Connect an IRQ line with a channel. */
+void etraxfs_dmac_connect(void *opaque, int c, qemu_irq *line, int input)
+{
+ struct fs_dma_ctrl *ctrl = opaque;
+ ctrl->channels[c].irq = *line;
+ ctrl->channels[c].input = input;
+}
+
+void etraxfs_dmac_connect_client(void *opaque, int c,
+ struct etraxfs_dma_client *cl)
+{
+ struct fs_dma_ctrl *ctrl = opaque;
+ cl->ctrl = ctrl;
+ cl->channel = c;
+ ctrl->channels[c].client = cl;
+}
+
+
+static void DMA_run(void *opaque)
+{
+ struct fs_dma_ctrl *etraxfs_dmac = opaque;
+ int p = 1;
+
+ if (runstate_is_running())
+ p = etraxfs_dmac_run(etraxfs_dmac);
+
+ if (p)
+ qemu_bh_schedule_idle(etraxfs_dmac->bh);
+}
+
+void *etraxfs_dmac_init(hwaddr base, int nr_channels)
+{
+ struct fs_dma_ctrl *ctrl = NULL;
+
+ ctrl = g_malloc0(sizeof *ctrl);
+
+ ctrl->bh = qemu_bh_new(DMA_run, ctrl);
+
+ ctrl->nr_channels = nr_channels;
+ ctrl->channels = g_malloc0(sizeof ctrl->channels[0] * nr_channels);
+
+ memory_region_init_io(&ctrl->mmio, &dma_ops, ctrl, "etraxfs-dma",
+ nr_channels * 0x2000);
+ memory_region_add_subregion(get_system_memory(), base, &ctrl->mmio);
+
+ return ctrl;
+}
--- /dev/null
+/*
+ * TI OMAP DMA gigacell.
+ *
+ * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org>
+ * Copyright (C) 2007-2008 Lauro Ramos Venancio <lauro.venancio@indt.org.br>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "qemu-common.h"
+#include "qemu/timer.h"
+#include "hw/arm/omap.h"
+#include "hw/irq.h"
+#include "hw/arm/soc_dma.h"
+
+struct omap_dma_channel_s {
+ /* transfer data */
+ int burst[2];
+ int pack[2];
+ int endian[2];
+ int endian_lock[2];
+ int translate[2];
+ enum omap_dma_port port[2];
+ hwaddr addr[2];
+ omap_dma_addressing_t mode[2];
+ uint32_t elements;
+ uint16_t frames;
+ int32_t frame_index[2];
+ int16_t element_index[2];
+ int data_type;
+
+ /* transfer type */
+ int transparent_copy;
+ int constant_fill;
+ uint32_t color;
+ int prefetch;
+
+ /* auto init and linked channel data */
+ int end_prog;
+ int repeat;
+ int auto_init;
+ int link_enabled;
+ int link_next_ch;
+
+ /* interruption data */
+ int interrupts;
+ int status;
+ int cstatus;
+
+ /* state data */
+ int active;
+ int enable;
+ int sync;
+ int src_sync;
+ int pending_request;
+ int waiting_end_prog;
+ uint16_t cpc;
+ int set_update;
+
+ /* sync type */
+ int fs;
+ int bs;
+
+ /* compatibility */
+ int omap_3_1_compatible_disable;
+
+ qemu_irq irq;
+ struct omap_dma_channel_s *sibling;
+
+ struct omap_dma_reg_set_s {
+ hwaddr src, dest;
+ int frame;
+ int element;
+ int pck_element;
+ int frame_delta[2];
+ int elem_delta[2];
+ int frames;
+ int elements;
+ int pck_elements;
+ } active_set;
+
+ struct soc_dma_ch_s *dma;
+
+ /* unused parameters */
+ int write_mode;
+ int priority;
+ int interleave_disabled;
+ int type;
+ int suspend;
+ int buf_disable;
+};
+
+struct omap_dma_s {
+ struct soc_dma_s *dma;
+ MemoryRegion iomem;
+
+ struct omap_mpu_state_s *mpu;
+ omap_clk clk;
+ qemu_irq irq[4];
+ void (*intr_update)(struct omap_dma_s *s);
+ enum omap_dma_model model;
+ int omap_3_1_mapping_disabled;
+
+ uint32_t gcr;
+ uint32_t ocp;
+ uint32_t caps[5];
+ uint32_t irqen[4];
+ uint32_t irqstat[4];
+
+ int chans;
+ struct omap_dma_channel_s ch[32];
+ struct omap_dma_lcd_channel_s lcd_ch;
+};
+
+/* Interrupts */
+#define TIMEOUT_INTR (1 << 0)
+#define EVENT_DROP_INTR (1 << 1)
+#define HALF_FRAME_INTR (1 << 2)
+#define END_FRAME_INTR (1 << 3)
+#define LAST_FRAME_INTR (1 << 4)
+#define END_BLOCK_INTR (1 << 5)
+#define SYNC (1 << 6)
+#define END_PKT_INTR (1 << 7)
+#define TRANS_ERR_INTR (1 << 8)
+#define MISALIGN_INTR (1 << 11)
+
+static inline void omap_dma_interrupts_update(struct omap_dma_s *s)
+{
+ return s->intr_update(s);
+}
+
+static void omap_dma_channel_load(struct omap_dma_channel_s *ch)
+{
+ struct omap_dma_reg_set_s *a = &ch->active_set;
+ int i, normal;
+ int omap_3_1 = !ch->omap_3_1_compatible_disable;
+
+ /*
+ * TODO: verify address ranges and alignment
+ * TODO: port endianness
+ */
+
+ a->src = ch->addr[0];
+ a->dest = ch->addr[1];
+ a->frames = ch->frames;
+ a->elements = ch->elements;
+ a->pck_elements = ch->frame_index[!ch->src_sync];
+ a->frame = 0;
+ a->element = 0;
+ a->pck_element = 0;
+
+ if (unlikely(!ch->elements || !ch->frames)) {
+ printf("%s: bad DMA request\n", __FUNCTION__);
+ return;
+ }
+
+ for (i = 0; i < 2; i ++)
+ switch (ch->mode[i]) {
+ case constant:
+ a->elem_delta[i] = 0;
+ a->frame_delta[i] = 0;
+ break;
+ case post_incremented:
+ a->elem_delta[i] = ch->data_type;
+ a->frame_delta[i] = 0;
+ break;
+ case single_index:
+ a->elem_delta[i] = ch->data_type +
+ ch->element_index[omap_3_1 ? 0 : i] - 1;
+ a->frame_delta[i] = 0;
+ break;
+ case double_index:
+ a->elem_delta[i] = ch->data_type +
+ ch->element_index[omap_3_1 ? 0 : i] - 1;
+ a->frame_delta[i] = ch->frame_index[omap_3_1 ? 0 : i] -
+ ch->element_index[omap_3_1 ? 0 : i];
+ break;
+ default:
+ break;
+ }
+
+ normal = !ch->transparent_copy && !ch->constant_fill &&
+ /* FIFO is big-endian so either (ch->endian[n] == 1) OR
+ * (ch->endian_lock[n] == 1) mean no endianism conversion. */
+ (ch->endian[0] | ch->endian_lock[0]) ==
+ (ch->endian[1] | ch->endian_lock[1]);
+ for (i = 0; i < 2; i ++) {
+ /* TODO: for a->frame_delta[i] > 0 still use the fast path, just
+ * limit min_elems in omap_dma_transfer_setup to the nearest frame
+ * end. */
+ if (!a->elem_delta[i] && normal &&
+ (a->frames == 1 || !a->frame_delta[i]))
+ ch->dma->type[i] = soc_dma_access_const;
+ else if (a->elem_delta[i] == ch->data_type && normal &&
+ (a->frames == 1 || !a->frame_delta[i]))
+ ch->dma->type[i] = soc_dma_access_linear;
+ else
+ ch->dma->type[i] = soc_dma_access_other;
+
+ ch->dma->vaddr[i] = ch->addr[i];
+ }
+ soc_dma_ch_update(ch->dma);
+}
+
+static void omap_dma_activate_channel(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch)
+{
+ if (!ch->active) {
+ if (ch->set_update) {
+ /* It's not clear when the active set is supposed to be
+ * loaded from registers. We're already loading it when the
+ * channel is enabled, and for some guests this is not enough
+ * but that may be also because of a race condition (no
+ * delays in qemu) in the guest code, which we're just
+ * working around here. */
+ omap_dma_channel_load(ch);
+ ch->set_update = 0;
+ }
+
+ ch->active = 1;
+ soc_dma_set_request(ch->dma, 1);
+ if (ch->sync)
+ ch->status |= SYNC;
+ }
+}
+
+static void omap_dma_deactivate_channel(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch)
+{
+ /* Update cpc */
+ ch->cpc = ch->active_set.dest & 0xffff;
+
+ if (ch->pending_request && !ch->waiting_end_prog && ch->enable) {
+ /* Don't deactivate the channel */
+ ch->pending_request = 0;
+ return;
+ }
+
+ /* Don't deactive the channel if it is synchronized and the DMA request is
+ active */
+ if (ch->sync && ch->enable && (s->dma->drqbmp & (1 << ch->sync)))
+ return;
+
+ if (ch->active) {
+ ch->active = 0;
+ ch->status &= ~SYNC;
+ soc_dma_set_request(ch->dma, 0);
+ }
+}
+
+static void omap_dma_enable_channel(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch)
+{
+ if (!ch->enable) {
+ ch->enable = 1;
+ ch->waiting_end_prog = 0;
+ omap_dma_channel_load(ch);
+ /* TODO: theoretically if ch->sync && ch->prefetch &&
+ * !s->dma->drqbmp[ch->sync], we should also activate and fetch
+ * from source and then stall until signalled. */
+ if ((!ch->sync) || (s->dma->drqbmp & (1 << ch->sync)))
+ omap_dma_activate_channel(s, ch);
+ }
+}
+
+static void omap_dma_disable_channel(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch)
+{
+ if (ch->enable) {
+ ch->enable = 0;
+ /* Discard any pending request */
+ ch->pending_request = 0;
+ omap_dma_deactivate_channel(s, ch);
+ }
+}
+
+static void omap_dma_channel_end_prog(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch)
+{
+ if (ch->waiting_end_prog) {
+ ch->waiting_end_prog = 0;
+ if (!ch->sync || ch->pending_request) {
+ ch->pending_request = 0;
+ omap_dma_activate_channel(s, ch);
+ }
+ }
+}
+
+static void omap_dma_interrupts_3_1_update(struct omap_dma_s *s)
+{
+ struct omap_dma_channel_s *ch = s->ch;
+
+ /* First three interrupts are shared between two channels each. */
+ if (ch[0].status | ch[6].status)
+ qemu_irq_raise(ch[0].irq);
+ if (ch[1].status | ch[7].status)
+ qemu_irq_raise(ch[1].irq);
+ if (ch[2].status | ch[8].status)
+ qemu_irq_raise(ch[2].irq);
+ if (ch[3].status)
+ qemu_irq_raise(ch[3].irq);
+ if (ch[4].status)
+ qemu_irq_raise(ch[4].irq);
+ if (ch[5].status)
+ qemu_irq_raise(ch[5].irq);
+}
+
+static void omap_dma_interrupts_3_2_update(struct omap_dma_s *s)
+{
+ struct omap_dma_channel_s *ch = s->ch;
+ int i;
+
+ for (i = s->chans; i; ch ++, i --)
+ if (ch->status)
+ qemu_irq_raise(ch->irq);
+}
+
+static void omap_dma_enable_3_1_mapping(struct omap_dma_s *s)
+{
+ s->omap_3_1_mapping_disabled = 0;
+ s->chans = 9;
+ s->intr_update = omap_dma_interrupts_3_1_update;
+}
+
+static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s)
+{
+ s->omap_3_1_mapping_disabled = 1;
+ s->chans = 16;
+ s->intr_update = omap_dma_interrupts_3_2_update;
+}
+
+static void omap_dma_process_request(struct omap_dma_s *s, int request)
+{
+ int channel;
+ int drop_event = 0;
+ struct omap_dma_channel_s *ch = s->ch;
+
+ for (channel = 0; channel < s->chans; channel ++, ch ++) {
+ if (ch->enable && ch->sync == request) {
+ if (!ch->active)
+ omap_dma_activate_channel(s, ch);
+ else if (!ch->pending_request)
+ ch->pending_request = 1;
+ else {
+ /* Request collision */
+ /* Second request received while processing other request */
+ ch->status |= EVENT_DROP_INTR;
+ drop_event = 1;
+ }
+ }
+ }
+
+ if (drop_event)
+ omap_dma_interrupts_update(s);
+}
+
+static void omap_dma_transfer_generic(struct soc_dma_ch_s *dma)
+{
+ uint8_t value[4];
+ struct omap_dma_channel_s *ch = dma->opaque;
+ struct omap_dma_reg_set_s *a = &ch->active_set;
+ int bytes = dma->bytes;
+#ifdef MULTI_REQ
+ uint16_t status = ch->status;
+#endif
+
+ do {
+ /* Transfer a single element */
+ /* FIXME: check the endianness */
+ if (!ch->constant_fill)
+ cpu_physical_memory_read(a->src, value, ch->data_type);
+ else
+ *(uint32_t *) value = ch->color;
+
+ if (!ch->transparent_copy || *(uint32_t *) value != ch->color)
+ cpu_physical_memory_write(a->dest, value, ch->data_type);
+
+ a->src += a->elem_delta[0];
+ a->dest += a->elem_delta[1];
+ a->element ++;
+
+#ifndef MULTI_REQ
+ if (a->element == a->elements) {
+ /* End of Frame */
+ a->element = 0;
+ a->src += a->frame_delta[0];
+ a->dest += a->frame_delta[1];
+ a->frame ++;
+
+ /* If the channel is async, update cpc */
+ if (!ch->sync)
+ ch->cpc = a->dest & 0xffff;
+ }
+ } while ((bytes -= ch->data_type));
+#else
+ /* If the channel is element synchronized, deactivate it */
+ if (ch->sync && !ch->fs && !ch->bs)
+ omap_dma_deactivate_channel(s, ch);
+
+ /* If it is the last frame, set the LAST_FRAME interrupt */
+ if (a->element == 1 && a->frame == a->frames - 1)
+ if (ch->interrupts & LAST_FRAME_INTR)
+ ch->status |= LAST_FRAME_INTR;
+
+ /* If the half of the frame was reached, set the HALF_FRAME
+ interrupt */
+ if (a->element == (a->elements >> 1))
+ if (ch->interrupts & HALF_FRAME_INTR)
+ ch->status |= HALF_FRAME_INTR;
+
+ if (ch->fs && ch->bs) {
+ a->pck_element ++;
+ /* Check if a full packet has beed transferred. */
+ if (a->pck_element == a->pck_elements) {
+ a->pck_element = 0;
+
+ /* Set the END_PKT interrupt */
+ if ((ch->interrupts & END_PKT_INTR) && !ch->src_sync)
+ ch->status |= END_PKT_INTR;
+
+ /* If the channel is packet-synchronized, deactivate it */
+ if (ch->sync)
+ omap_dma_deactivate_channel(s, ch);
+ }
+ }
+
+ if (a->element == a->elements) {
+ /* End of Frame */
+ a->element = 0;
+ a->src += a->frame_delta[0];
+ a->dest += a->frame_delta[1];
+ a->frame ++;
+
+ /* If the channel is frame synchronized, deactivate it */
+ if (ch->sync && ch->fs && !ch->bs)
+ omap_dma_deactivate_channel(s, ch);
+
+ /* If the channel is async, update cpc */
+ if (!ch->sync)
+ ch->cpc = a->dest & 0xffff;
+
+ /* Set the END_FRAME interrupt */
+ if (ch->interrupts & END_FRAME_INTR)
+ ch->status |= END_FRAME_INTR;
+
+ if (a->frame == a->frames) {
+ /* End of Block */
+ /* Disable the channel */
+
+ if (ch->omap_3_1_compatible_disable) {
+ omap_dma_disable_channel(s, ch);
+ if (ch->link_enabled)
+ omap_dma_enable_channel(s,
+ &s->ch[ch->link_next_ch]);
+ } else {
+ if (!ch->auto_init)
+ omap_dma_disable_channel(s, ch);
+ else if (ch->repeat || ch->end_prog)
+ omap_dma_channel_load(ch);
+ else {
+ ch->waiting_end_prog = 1;
+ omap_dma_deactivate_channel(s, ch);
+ }
+ }
+
+ if (ch->interrupts & END_BLOCK_INTR)
+ ch->status |= END_BLOCK_INTR;
+ }
+ }
+ } while (status == ch->status && ch->active);
+
+ omap_dma_interrupts_update(s);
+#endif
+}
+
+enum {
+ omap_dma_intr_element_sync,
+ omap_dma_intr_last_frame,
+ omap_dma_intr_half_frame,
+ omap_dma_intr_frame,
+ omap_dma_intr_frame_sync,
+ omap_dma_intr_packet,
+ omap_dma_intr_packet_sync,
+ omap_dma_intr_block,
+ __omap_dma_intr_last,
+};
+
+static void omap_dma_transfer_setup(struct soc_dma_ch_s *dma)
+{
+ struct omap_dma_port_if_s *src_p, *dest_p;
+ struct omap_dma_reg_set_s *a;
+ struct omap_dma_channel_s *ch = dma->opaque;
+ struct omap_dma_s *s = dma->dma->opaque;
+ int frames, min_elems, elements[__omap_dma_intr_last];
+
+ a = &ch->active_set;
+
+ src_p = &s->mpu->port[ch->port[0]];
+ dest_p = &s->mpu->port[ch->port[1]];
+ if ((!ch->constant_fill && !src_p->addr_valid(s->mpu, a->src)) ||
+ (!dest_p->addr_valid(s->mpu, a->dest))) {
+#if 0
+ /* Bus time-out */
+ if (ch->interrupts & TIMEOUT_INTR)
+ ch->status |= TIMEOUT_INTR;
+ omap_dma_deactivate_channel(s, ch);
+ continue;
+#endif
+ printf("%s: Bus time-out in DMA%i operation\n",
+ __FUNCTION__, dma->num);
+ }
+
+ min_elems = INT_MAX;
+
+ /* Check all the conditions that terminate the transfer starting
+ * with those that can occur the soonest. */
+#define INTR_CHECK(cond, id, nelements) \
+ if (cond) { \
+ elements[id] = nelements; \
+ if (elements[id] < min_elems) \
+ min_elems = elements[id]; \
+ } else \
+ elements[id] = INT_MAX;
+
+ /* Elements */
+ INTR_CHECK(
+ ch->sync && !ch->fs && !ch->bs,
+ omap_dma_intr_element_sync,
+ 1)
+
+ /* Frames */
+ /* TODO: for transfers where entire frames can be read and written
+ * using memcpy() but a->frame_delta is non-zero, try to still do
+ * transfers using soc_dma but limit min_elems to a->elements - ...
+ * See also the TODO in omap_dma_channel_load. */
+ INTR_CHECK(
+ (ch->interrupts & LAST_FRAME_INTR) &&
+ ((a->frame < a->frames - 1) || !a->element),
+ omap_dma_intr_last_frame,
+ (a->frames - a->frame - 2) * a->elements +
+ (a->elements - a->element + 1))
+ INTR_CHECK(
+ ch->interrupts & HALF_FRAME_INTR,
+ omap_dma_intr_half_frame,
+ (a->elements >> 1) +
+ (a->element >= (a->elements >> 1) ? a->elements : 0) -
+ a->element)
+ INTR_CHECK(
+ ch->sync && ch->fs && (ch->interrupts & END_FRAME_INTR),
+ omap_dma_intr_frame,
+ a->elements - a->element)
+ INTR_CHECK(
+ ch->sync && ch->fs && !ch->bs,
+ omap_dma_intr_frame_sync,
+ a->elements - a->element)
+
+ /* Packets */
+ INTR_CHECK(
+ ch->fs && ch->bs &&
+ (ch->interrupts & END_PKT_INTR) && !ch->src_sync,
+ omap_dma_intr_packet,
+ a->pck_elements - a->pck_element)
+ INTR_CHECK(
+ ch->fs && ch->bs && ch->sync,
+ omap_dma_intr_packet_sync,
+ a->pck_elements - a->pck_element)
+
+ /* Blocks */
+ INTR_CHECK(
+ 1,
+ omap_dma_intr_block,
+ (a->frames - a->frame - 1) * a->elements +
+ (a->elements - a->element))
+
+ dma->bytes = min_elems * ch->data_type;
+
+ /* Set appropriate interrupts and/or deactivate channels */
+
+#ifdef MULTI_REQ
+ /* TODO: should all of this only be done if dma->update, and otherwise
+ * inside omap_dma_transfer_generic below - check what's faster. */
+ if (dma->update) {
+#endif
+
+ /* If the channel is element synchronized, deactivate it */
+ if (min_elems == elements[omap_dma_intr_element_sync])
+ omap_dma_deactivate_channel(s, ch);
+
+ /* If it is the last frame, set the LAST_FRAME interrupt */
+ if (min_elems == elements[omap_dma_intr_last_frame])
+ ch->status |= LAST_FRAME_INTR;
+
+ /* If exactly half of the frame was reached, set the HALF_FRAME
+ interrupt */
+ if (min_elems == elements[omap_dma_intr_half_frame])
+ ch->status |= HALF_FRAME_INTR;
+
+ /* If a full packet has been transferred, set the END_PKT interrupt */
+ if (min_elems == elements[omap_dma_intr_packet])
+ ch->status |= END_PKT_INTR;
+
+ /* If the channel is packet-synchronized, deactivate it */
+ if (min_elems == elements[omap_dma_intr_packet_sync])
+ omap_dma_deactivate_channel(s, ch);
+
+ /* If the channel is frame synchronized, deactivate it */
+ if (min_elems == elements[omap_dma_intr_frame_sync])
+ omap_dma_deactivate_channel(s, ch);
+
+ /* Set the END_FRAME interrupt */
+ if (min_elems == elements[omap_dma_intr_frame])
+ ch->status |= END_FRAME_INTR;
+
+ if (min_elems == elements[omap_dma_intr_block]) {
+ /* End of Block */
+ /* Disable the channel */
+
+ if (ch->omap_3_1_compatible_disable) {
+ omap_dma_disable_channel(s, ch);
+ if (ch->link_enabled)
+ omap_dma_enable_channel(s, &s->ch[ch->link_next_ch]);
+ } else {
+ if (!ch->auto_init)
+ omap_dma_disable_channel(s, ch);
+ else if (ch->repeat || ch->end_prog)
+ omap_dma_channel_load(ch);
+ else {
+ ch->waiting_end_prog = 1;
+ omap_dma_deactivate_channel(s, ch);
+ }
+ }
+
+ if (ch->interrupts & END_BLOCK_INTR)
+ ch->status |= END_BLOCK_INTR;
+ }
+
+ /* Update packet number */
+ if (ch->fs && ch->bs) {
+ a->pck_element += min_elems;
+ a->pck_element %= a->pck_elements;
+ }
+
+ /* TODO: check if we really need to update anything here or perhaps we
+ * can skip part of this. */
+#ifndef MULTI_REQ
+ if (dma->update) {
+#endif
+ a->element += min_elems;
+
+ frames = a->element / a->elements;
+ a->element = a->element % a->elements;
+ a->frame += frames;
+ a->src += min_elems * a->elem_delta[0] + frames * a->frame_delta[0];
+ a->dest += min_elems * a->elem_delta[1] + frames * a->frame_delta[1];
+
+ /* If the channel is async, update cpc */
+ if (!ch->sync && frames)
+ ch->cpc = a->dest & 0xffff;
+
+ /* TODO: if the destination port is IMIF or EMIFF, set the dirty
+ * bits on it. */
+#ifndef MULTI_REQ
+ }
+#else
+ }
+#endif
+
+ omap_dma_interrupts_update(s);
+}
+
+void omap_dma_reset(struct soc_dma_s *dma)
+{
+ int i;
+ struct omap_dma_s *s = dma->opaque;
+
+ soc_dma_reset(s->dma);
+ if (s->model < omap_dma_4)
+ s->gcr = 0x0004;
+ else
+ s->gcr = 0x00010010;
+ s->ocp = 0x00000000;
+ memset(&s->irqstat, 0, sizeof(s->irqstat));
+ memset(&s->irqen, 0, sizeof(s->irqen));
+ s->lcd_ch.src = emiff;
+ s->lcd_ch.condition = 0;
+ s->lcd_ch.interrupts = 0;
+ s->lcd_ch.dual = 0;
+ if (s->model < omap_dma_4)
+ omap_dma_enable_3_1_mapping(s);
+ for (i = 0; i < s->chans; i ++) {
+ s->ch[i].suspend = 0;
+ s->ch[i].prefetch = 0;
+ s->ch[i].buf_disable = 0;
+ s->ch[i].src_sync = 0;
+ memset(&s->ch[i].burst, 0, sizeof(s->ch[i].burst));
+ memset(&s->ch[i].port, 0, sizeof(s->ch[i].port));
+ memset(&s->ch[i].mode, 0, sizeof(s->ch[i].mode));
+ memset(&s->ch[i].frame_index, 0, sizeof(s->ch[i].frame_index));
+ memset(&s->ch[i].element_index, 0, sizeof(s->ch[i].element_index));
+ memset(&s->ch[i].endian, 0, sizeof(s->ch[i].endian));
+ memset(&s->ch[i].endian_lock, 0, sizeof(s->ch[i].endian_lock));
+ memset(&s->ch[i].translate, 0, sizeof(s->ch[i].translate));
+ s->ch[i].write_mode = 0;
+ s->ch[i].data_type = 0;
+ s->ch[i].transparent_copy = 0;
+ s->ch[i].constant_fill = 0;
+ s->ch[i].color = 0x00000000;
+ s->ch[i].end_prog = 0;
+ s->ch[i].repeat = 0;
+ s->ch[i].auto_init = 0;
+ s->ch[i].link_enabled = 0;
+ if (s->model < omap_dma_4)
+ s->ch[i].interrupts = 0x0003;
+ else
+ s->ch[i].interrupts = 0x0000;
+ s->ch[i].status = 0;
+ s->ch[i].cstatus = 0;
+ s->ch[i].active = 0;
+ s->ch[i].enable = 0;
+ s->ch[i].sync = 0;
+ s->ch[i].pending_request = 0;
+ s->ch[i].waiting_end_prog = 0;
+ s->ch[i].cpc = 0x0000;
+ s->ch[i].fs = 0;
+ s->ch[i].bs = 0;
+ s->ch[i].omap_3_1_compatible_disable = 0;
+ memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set));
+ s->ch[i].priority = 0;
+ s->ch[i].interleave_disabled = 0;
+ s->ch[i].type = 0;
+ }
+}
+
+static int omap_dma_ch_reg_read(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch, int reg, uint16_t *value)
+{
+ switch (reg) {
+ case 0x00: /* SYS_DMA_CSDP_CH0 */
+ *value = (ch->burst[1] << 14) |
+ (ch->pack[1] << 13) |
+ (ch->port[1] << 9) |
+ (ch->burst[0] << 7) |
+ (ch->pack[0] << 6) |
+ (ch->port[0] << 2) |
+ (ch->data_type >> 1);
+ break;
+
+ case 0x02: /* SYS_DMA_CCR_CH0 */
+ if (s->model <= omap_dma_3_1)
+ *value = 0 << 10; /* FIFO_FLUSH reads as 0 */
+ else
+ *value = ch->omap_3_1_compatible_disable << 10;
+ *value |= (ch->mode[1] << 14) |
+ (ch->mode[0] << 12) |
+ (ch->end_prog << 11) |
+ (ch->repeat << 9) |
+ (ch->auto_init << 8) |
+ (ch->enable << 7) |
+ (ch->priority << 6) |
+ (ch->fs << 5) | ch->sync;
+ break;
+
+ case 0x04: /* SYS_DMA_CICR_CH0 */
+ *value = ch->interrupts;
+ break;
+
+ case 0x06: /* SYS_DMA_CSR_CH0 */
+ *value = ch->status;
+ ch->status &= SYNC;
+ if (!ch->omap_3_1_compatible_disable && ch->sibling) {
+ *value |= (ch->sibling->status & 0x3f) << 6;
+ ch->sibling->status &= SYNC;
+ }
+ qemu_irq_lower(ch->irq);
+ break;
+
+ case 0x08: /* SYS_DMA_CSSA_L_CH0 */
+ *value = ch->addr[0] & 0x0000ffff;
+ break;
+
+ case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
+ *value = ch->addr[0] >> 16;
+ break;
+
+ case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
+ *value = ch->addr[1] & 0x0000ffff;
+ break;
+
+ case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
+ *value = ch->addr[1] >> 16;
+ break;
+
+ case 0x10: /* SYS_DMA_CEN_CH0 */
+ *value = ch->elements;
+ break;
+
+ case 0x12: /* SYS_DMA_CFN_CH0 */
+ *value = ch->frames;
+ break;
+
+ case 0x14: /* SYS_DMA_CFI_CH0 */
+ *value = ch->frame_index[0];
+ break;
+
+ case 0x16: /* SYS_DMA_CEI_CH0 */
+ *value = ch->element_index[0];
+ break;
+
+ case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
+ if (ch->omap_3_1_compatible_disable)
+ *value = ch->active_set.src & 0xffff; /* CSAC */
+ else
+ *value = ch->cpc;
+ break;
+
+ case 0x1a: /* DMA_CDAC */
+ *value = ch->active_set.dest & 0xffff; /* CDAC */
+ break;
+
+ case 0x1c: /* DMA_CDEI */
+ *value = ch->element_index[1];
+ break;
+
+ case 0x1e: /* DMA_CDFI */
+ *value = ch->frame_index[1];
+ break;
+
+ case 0x20: /* DMA_COLOR_L */
+ *value = ch->color & 0xffff;
+ break;
+
+ case 0x22: /* DMA_COLOR_U */
+ *value = ch->color >> 16;
+ break;
+
+ case 0x24: /* DMA_CCR2 */
+ *value = (ch->bs << 2) |
+ (ch->transparent_copy << 1) |
+ ch->constant_fill;
+ break;
+
+ case 0x28: /* DMA_CLNK_CTRL */
+ *value = (ch->link_enabled << 15) |
+ (ch->link_next_ch & 0xf);
+ break;
+
+ case 0x2a: /* DMA_LCH_CTRL */
+ *value = (ch->interleave_disabled << 15) |
+ ch->type;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_ch_reg_write(struct omap_dma_s *s,
+ struct omap_dma_channel_s *ch, int reg, uint16_t value)
+{
+ switch (reg) {
+ case 0x00: /* SYS_DMA_CSDP_CH0 */
+ ch->burst[1] = (value & 0xc000) >> 14;
+ ch->pack[1] = (value & 0x2000) >> 13;
+ ch->port[1] = (enum omap_dma_port) ((value & 0x1e00) >> 9);
+ ch->burst[0] = (value & 0x0180) >> 7;
+ ch->pack[0] = (value & 0x0040) >> 6;
+ ch->port[0] = (enum omap_dma_port) ((value & 0x003c) >> 2);
+ ch->data_type = 1 << (value & 3);
+ if (ch->port[0] >= __omap_dma_port_last)
+ printf("%s: invalid DMA port %i\n", __FUNCTION__,
+ ch->port[0]);
+ if (ch->port[1] >= __omap_dma_port_last)
+ printf("%s: invalid DMA port %i\n", __FUNCTION__,
+ ch->port[1]);
+ if ((value & 3) == 3)
+ printf("%s: bad data_type for DMA channel\n", __FUNCTION__);
+ break;
+
+ case 0x02: /* SYS_DMA_CCR_CH0 */
+ ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
+ ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
+ ch->end_prog = (value & 0x0800) >> 11;
+ if (s->model >= omap_dma_3_2)
+ ch->omap_3_1_compatible_disable = (value >> 10) & 0x1;
+ ch->repeat = (value & 0x0200) >> 9;
+ ch->auto_init = (value & 0x0100) >> 8;
+ ch->priority = (value & 0x0040) >> 6;
+ ch->fs = (value & 0x0020) >> 5;
+ ch->sync = value & 0x001f;
+
+ if (value & 0x0080)
+ omap_dma_enable_channel(s, ch);
+ else
+ omap_dma_disable_channel(s, ch);
+
+ if (ch->end_prog)
+ omap_dma_channel_end_prog(s, ch);
+
+ break;
+
+ case 0x04: /* SYS_DMA_CICR_CH0 */
+ ch->interrupts = value & 0x3f;
+ break;
+
+ case 0x06: /* SYS_DMA_CSR_CH0 */
+ OMAP_RO_REG((hwaddr) reg);
+ break;
+
+ case 0x08: /* SYS_DMA_CSSA_L_CH0 */
+ ch->addr[0] &= 0xffff0000;
+ ch->addr[0] |= value;
+ break;
+
+ case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
+ ch->addr[0] &= 0x0000ffff;
+ ch->addr[0] |= (uint32_t) value << 16;
+ break;
+
+ case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
+ ch->addr[1] &= 0xffff0000;
+ ch->addr[1] |= value;
+ break;
+
+ case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
+ ch->addr[1] &= 0x0000ffff;
+ ch->addr[1] |= (uint32_t) value << 16;
+ break;
+
+ case 0x10: /* SYS_DMA_CEN_CH0 */
+ ch->elements = value;
+ break;
+
+ case 0x12: /* SYS_DMA_CFN_CH0 */
+ ch->frames = value;
+ break;
+
+ case 0x14: /* SYS_DMA_CFI_CH0 */
+ ch->frame_index[0] = (int16_t) value;
+ break;
+
+ case 0x16: /* SYS_DMA_CEI_CH0 */
+ ch->element_index[0] = (int16_t) value;
+ break;
+
+ case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
+ OMAP_RO_REG((hwaddr) reg);
+ break;
+
+ case 0x1c: /* DMA_CDEI */
+ ch->element_index[1] = (int16_t) value;
+ break;
+
+ case 0x1e: /* DMA_CDFI */
+ ch->frame_index[1] = (int16_t) value;
+ break;
+
+ case 0x20: /* DMA_COLOR_L */
+ ch->color &= 0xffff0000;
+ ch->color |= value;
+ break;
+
+ case 0x22: /* DMA_COLOR_U */
+ ch->color &= 0xffff;
+ ch->color |= value << 16;
+ break;
+
+ case 0x24: /* DMA_CCR2 */
+ ch->bs = (value >> 2) & 0x1;
+ ch->transparent_copy = (value >> 1) & 0x1;
+ ch->constant_fill = value & 0x1;
+ break;
+
+ case 0x28: /* DMA_CLNK_CTRL */
+ ch->link_enabled = (value >> 15) & 0x1;
+ if (value & (1 << 14)) { /* Stop_Lnk */
+ ch->link_enabled = 0;
+ omap_dma_disable_channel(s, ch);
+ }
+ ch->link_next_ch = value & 0x1f;
+ break;
+
+ case 0x2a: /* DMA_LCH_CTRL */
+ ch->interleave_disabled = (value >> 15) & 0x1;
+ ch->type = value & 0xf;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_3_2_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
+ uint16_t value)
+{
+ switch (offset) {
+ case 0xbc0: /* DMA_LCD_CSDP */
+ s->brust_f2 = (value >> 14) & 0x3;
+ s->pack_f2 = (value >> 13) & 0x1;
+ s->data_type_f2 = (1 << ((value >> 11) & 0x3));
+ s->brust_f1 = (value >> 7) & 0x3;
+ s->pack_f1 = (value >> 6) & 0x1;
+ s->data_type_f1 = (1 << ((value >> 0) & 0x3));
+ break;
+
+ case 0xbc2: /* DMA_LCD_CCR */
+ s->mode_f2 = (value >> 14) & 0x3;
+ s->mode_f1 = (value >> 12) & 0x3;
+ s->end_prog = (value >> 11) & 0x1;
+ s->omap_3_1_compatible_disable = (value >> 10) & 0x1;
+ s->repeat = (value >> 9) & 0x1;
+ s->auto_init = (value >> 8) & 0x1;
+ s->running = (value >> 7) & 0x1;
+ s->priority = (value >> 6) & 0x1;
+ s->bs = (value >> 4) & 0x1;
+ break;
+
+ case 0xbc4: /* DMA_LCD_CTRL */
+ s->dst = (value >> 8) & 0x1;
+ s->src = ((value >> 6) & 0x3) << 1;
+ s->condition = 0;
+ /* Assume no bus errors and thus no BUS_ERROR irq bits. */
+ s->interrupts = (value >> 1) & 1;
+ s->dual = value & 1;
+ break;
+
+ case 0xbc8: /* TOP_B1_L */
+ s->src_f1_top &= 0xffff0000;
+ s->src_f1_top |= 0x0000ffff & value;
+ break;
+
+ case 0xbca: /* TOP_B1_U */
+ s->src_f1_top &= 0x0000ffff;
+ s->src_f1_top |= value << 16;
+ break;
+
+ case 0xbcc: /* BOT_B1_L */
+ s->src_f1_bottom &= 0xffff0000;
+ s->src_f1_bottom |= 0x0000ffff & value;
+ break;
+
+ case 0xbce: /* BOT_B1_U */
+ s->src_f1_bottom &= 0x0000ffff;
+ s->src_f1_bottom |= (uint32_t) value << 16;
+ break;
+
+ case 0xbd0: /* TOP_B2_L */
+ s->src_f2_top &= 0xffff0000;
+ s->src_f2_top |= 0x0000ffff & value;
+ break;
+
+ case 0xbd2: /* TOP_B2_U */
+ s->src_f2_top &= 0x0000ffff;
+ s->src_f2_top |= (uint32_t) value << 16;
+ break;
+
+ case 0xbd4: /* BOT_B2_L */
+ s->src_f2_bottom &= 0xffff0000;
+ s->src_f2_bottom |= 0x0000ffff & value;
+ break;
+
+ case 0xbd6: /* BOT_B2_U */
+ s->src_f2_bottom &= 0x0000ffff;
+ s->src_f2_bottom |= (uint32_t) value << 16;
+ break;
+
+ case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
+ s->element_index_f1 = value;
+ break;
+
+ case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
+ s->frame_index_f1 &= 0xffff0000;
+ s->frame_index_f1 |= 0x0000ffff & value;
+ break;
+
+ case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
+ s->frame_index_f1 &= 0x0000ffff;
+ s->frame_index_f1 |= (uint32_t) value << 16;
+ break;
+
+ case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
+ s->element_index_f2 = value;
+ break;
+
+ case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
+ s->frame_index_f2 &= 0xffff0000;
+ s->frame_index_f2 |= 0x0000ffff & value;
+ break;
+
+ case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
+ s->frame_index_f2 &= 0x0000ffff;
+ s->frame_index_f2 |= (uint32_t) value << 16;
+ break;
+
+ case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
+ s->elements_f1 = value;
+ break;
+
+ case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
+ s->frames_f1 = value;
+ break;
+
+ case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
+ s->elements_f2 = value;
+ break;
+
+ case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
+ s->frames_f2 = value;
+ break;
+
+ case 0xbea: /* DMA_LCD_LCH_CTRL */
+ s->lch_type = value & 0xf;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_3_2_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
+ uint16_t *ret)
+{
+ switch (offset) {
+ case 0xbc0: /* DMA_LCD_CSDP */
+ *ret = (s->brust_f2 << 14) |
+ (s->pack_f2 << 13) |
+ ((s->data_type_f2 >> 1) << 11) |
+ (s->brust_f1 << 7) |
+ (s->pack_f1 << 6) |
+ ((s->data_type_f1 >> 1) << 0);
+ break;
+
+ case 0xbc2: /* DMA_LCD_CCR */
+ *ret = (s->mode_f2 << 14) |
+ (s->mode_f1 << 12) |
+ (s->end_prog << 11) |
+ (s->omap_3_1_compatible_disable << 10) |
+ (s->repeat << 9) |
+ (s->auto_init << 8) |
+ (s->running << 7) |
+ (s->priority << 6) |
+ (s->bs << 4);
+ break;
+
+ case 0xbc4: /* DMA_LCD_CTRL */
+ qemu_irq_lower(s->irq);
+ *ret = (s->dst << 8) |
+ ((s->src & 0x6) << 5) |
+ (s->condition << 3) |
+ (s->interrupts << 1) |
+ s->dual;
+ break;
+
+ case 0xbc8: /* TOP_B1_L */
+ *ret = s->src_f1_top & 0xffff;
+ break;
+
+ case 0xbca: /* TOP_B1_U */
+ *ret = s->src_f1_top >> 16;
+ break;
+
+ case 0xbcc: /* BOT_B1_L */
+ *ret = s->src_f1_bottom & 0xffff;
+ break;
+
+ case 0xbce: /* BOT_B1_U */
+ *ret = s->src_f1_bottom >> 16;
+ break;
+
+ case 0xbd0: /* TOP_B2_L */
+ *ret = s->src_f2_top & 0xffff;
+ break;
+
+ case 0xbd2: /* TOP_B2_U */
+ *ret = s->src_f2_top >> 16;
+ break;
+
+ case 0xbd4: /* BOT_B2_L */
+ *ret = s->src_f2_bottom & 0xffff;
+ break;
+
+ case 0xbd6: /* BOT_B2_U */
+ *ret = s->src_f2_bottom >> 16;
+ break;
+
+ case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
+ *ret = s->element_index_f1;
+ break;
+
+ case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
+ *ret = s->frame_index_f1 & 0xffff;
+ break;
+
+ case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
+ *ret = s->frame_index_f1 >> 16;
+ break;
+
+ case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
+ *ret = s->element_index_f2;
+ break;
+
+ case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
+ *ret = s->frame_index_f2 & 0xffff;
+ break;
+
+ case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
+ *ret = s->frame_index_f2 >> 16;
+ break;
+
+ case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
+ *ret = s->elements_f1;
+ break;
+
+ case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
+ *ret = s->frames_f1;
+ break;
+
+ case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
+ *ret = s->elements_f2;
+ break;
+
+ case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
+ *ret = s->frames_f2;
+ break;
+
+ case 0xbea: /* DMA_LCD_LCH_CTRL */
+ *ret = s->lch_type;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_3_1_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
+ uint16_t value)
+{
+ switch (offset) {
+ case 0x300: /* SYS_DMA_LCD_CTRL */
+ s->src = (value & 0x40) ? imif : emiff;
+ s->condition = 0;
+ /* Assume no bus errors and thus no BUS_ERROR irq bits. */
+ s->interrupts = (value >> 1) & 1;
+ s->dual = value & 1;
+ break;
+
+ case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
+ s->src_f1_top &= 0xffff0000;
+ s->src_f1_top |= 0x0000ffff & value;
+ break;
+
+ case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
+ s->src_f1_top &= 0x0000ffff;
+ s->src_f1_top |= value << 16;
+ break;
+
+ case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
+ s->src_f1_bottom &= 0xffff0000;
+ s->src_f1_bottom |= 0x0000ffff & value;
+ break;
+
+ case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
+ s->src_f1_bottom &= 0x0000ffff;
+ s->src_f1_bottom |= value << 16;
+ break;
+
+ case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
+ s->src_f2_top &= 0xffff0000;
+ s->src_f2_top |= 0x0000ffff & value;
+ break;
+
+ case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
+ s->src_f2_top &= 0x0000ffff;
+ s->src_f2_top |= value << 16;
+ break;
+
+ case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
+ s->src_f2_bottom &= 0xffff0000;
+ s->src_f2_bottom |= 0x0000ffff & value;
+ break;
+
+ case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
+ s->src_f2_bottom &= 0x0000ffff;
+ s->src_f2_bottom |= value << 16;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_3_1_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
+ uint16_t *ret)
+{
+ int i;
+
+ switch (offset) {
+ case 0x300: /* SYS_DMA_LCD_CTRL */
+ i = s->condition;
+ s->condition = 0;
+ qemu_irq_lower(s->irq);
+ *ret = ((s->src == imif) << 6) | (i << 3) |
+ (s->interrupts << 1) | s->dual;
+ break;
+
+ case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
+ *ret = s->src_f1_top & 0xffff;
+ break;
+
+ case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
+ *ret = s->src_f1_top >> 16;
+ break;
+
+ case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
+ *ret = s->src_f1_bottom & 0xffff;
+ break;
+
+ case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
+ *ret = s->src_f1_bottom >> 16;
+ break;
+
+ case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
+ *ret = s->src_f2_top & 0xffff;
+ break;
+
+ case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
+ *ret = s->src_f2_top >> 16;
+ break;
+
+ case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
+ *ret = s->src_f2_bottom & 0xffff;
+ break;
+
+ case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
+ *ret = s->src_f2_bottom >> 16;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_sys_write(struct omap_dma_s *s, int offset, uint16_t value)
+{
+ switch (offset) {
+ case 0x400: /* SYS_DMA_GCR */
+ s->gcr = value;
+ break;
+
+ case 0x404: /* DMA_GSCR */
+ if (value & 0x8)
+ omap_dma_disable_3_1_mapping(s);
+ else
+ omap_dma_enable_3_1_mapping(s);
+ break;
+
+ case 0x408: /* DMA_GRST */
+ if (value & 0x1)
+ omap_dma_reset(s->dma);
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static int omap_dma_sys_read(struct omap_dma_s *s, int offset,
+ uint16_t *ret)
+{
+ switch (offset) {
+ case 0x400: /* SYS_DMA_GCR */
+ *ret = s->gcr;
+ break;
+
+ case 0x404: /* DMA_GSCR */
+ *ret = s->omap_3_1_mapping_disabled << 3;
+ break;
+
+ case 0x408: /* DMA_GRST */
+ *ret = 0;
+ break;
+
+ case 0x442: /* DMA_HW_ID */
+ case 0x444: /* DMA_PCh2_ID */
+ case 0x446: /* DMA_PCh0_ID */
+ case 0x448: /* DMA_PCh1_ID */
+ case 0x44a: /* DMA_PChG_ID */
+ case 0x44c: /* DMA_PChD_ID */
+ *ret = 1;
+ break;
+
+ case 0x44e: /* DMA_CAPS_0_U */
+ *ret = (s->caps[0] >> 16) & 0xffff;
+ break;
+ case 0x450: /* DMA_CAPS_0_L */
+ *ret = (s->caps[0] >> 0) & 0xffff;
+ break;
+
+ case 0x452: /* DMA_CAPS_1_U */
+ *ret = (s->caps[1] >> 16) & 0xffff;
+ break;
+ case 0x454: /* DMA_CAPS_1_L */
+ *ret = (s->caps[1] >> 0) & 0xffff;
+ break;
+
+ case 0x456: /* DMA_CAPS_2 */
+ *ret = s->caps[2];
+ break;
+
+ case 0x458: /* DMA_CAPS_3 */
+ *ret = s->caps[3];
+ break;
+
+ case 0x45a: /* DMA_CAPS_4 */
+ *ret = s->caps[4];
+ break;
+
+ case 0x460: /* DMA_PCh2_SR */
+ case 0x480: /* DMA_PCh0_SR */
+ case 0x482: /* DMA_PCh1_SR */
+ case 0x4c0: /* DMA_PChD_SR_0 */
+ printf("%s: Physical Channel Status Registers not implemented.\n",
+ __FUNCTION__);
+ *ret = 0xff;
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}
+
+static uint64_t omap_dma_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ int reg, ch;
+ uint16_t ret;
+
+ if (size != 2) {
+ return omap_badwidth_read16(opaque, addr);
+ }
+
+ switch (addr) {
+ case 0x300 ... 0x3fe:
+ if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
+ if (omap_dma_3_1_lcd_read(&s->lcd_ch, addr, &ret))
+ break;
+ return ret;
+ }
+ /* Fall through. */
+ case 0x000 ... 0x2fe:
+ reg = addr & 0x3f;
+ ch = (addr >> 6) & 0x0f;
+ if (omap_dma_ch_reg_read(s, &s->ch[ch], reg, &ret))
+ break;
+ return ret;
+
+ case 0x404 ... 0x4fe:
+ if (s->model <= omap_dma_3_1)
+ break;
+ /* Fall through. */
+ case 0x400:
+ if (omap_dma_sys_read(s, addr, &ret))
+ break;
+ return ret;
+
+ case 0xb00 ... 0xbfe:
+ if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
+ if (omap_dma_3_2_lcd_read(&s->lcd_ch, addr, &ret))
+ break;
+ return ret;
+ }
+ break;
+ }
+
+ OMAP_BAD_REG(addr);
+ return 0;
+}
+
+static void omap_dma_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ int reg, ch;
+
+ if (size != 2) {
+ return omap_badwidth_write16(opaque, addr, value);
+ }
+
+ switch (addr) {
+ case 0x300 ... 0x3fe:
+ if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
+ if (omap_dma_3_1_lcd_write(&s->lcd_ch, addr, value))
+ break;
+ return;
+ }
+ /* Fall through. */
+ case 0x000 ... 0x2fe:
+ reg = addr & 0x3f;
+ ch = (addr >> 6) & 0x0f;
+ if (omap_dma_ch_reg_write(s, &s->ch[ch], reg, value))
+ break;
+ return;
+
+ case 0x404 ... 0x4fe:
+ if (s->model <= omap_dma_3_1)
+ break;
+ case 0x400:
+ /* Fall through. */
+ if (omap_dma_sys_write(s, addr, value))
+ break;
+ return;
+
+ case 0xb00 ... 0xbfe:
+ if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
+ if (omap_dma_3_2_lcd_write(&s->lcd_ch, addr, value))
+ break;
+ return;
+ }
+ break;
+ }
+
+ OMAP_BAD_REG(addr);
+}
+
+static const MemoryRegionOps omap_dma_ops = {
+ .read = omap_dma_read,
+ .write = omap_dma_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void omap_dma_request(void *opaque, int drq, int req)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ /* The request pins are level triggered in QEMU. */
+ if (req) {
+ if (~s->dma->drqbmp & (1 << drq)) {
+ s->dma->drqbmp |= 1 << drq;
+ omap_dma_process_request(s, drq);
+ }
+ } else
+ s->dma->drqbmp &= ~(1 << drq);
+}
+
+/* XXX: this won't be needed once soc_dma knows about clocks. */
+static void omap_dma_clk_update(void *opaque, int line, int on)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ int i;
+
+ s->dma->freq = omap_clk_getrate(s->clk);
+
+ for (i = 0; i < s->chans; i ++)
+ if (s->ch[i].active)
+ soc_dma_set_request(s->ch[i].dma, on);
+}
+
+static void omap_dma_setcaps(struct omap_dma_s *s)
+{
+ switch (s->model) {
+ default:
+ case omap_dma_3_1:
+ break;
+ case omap_dma_3_2:
+ case omap_dma_4:
+ /* XXX Only available for sDMA */
+ s->caps[0] =
+ (1 << 19) | /* Constant Fill Capability */
+ (1 << 18); /* Transparent BLT Capability */
+ s->caps[1] =
+ (1 << 1); /* 1-bit palettized capability (DMA 3.2 only) */
+ s->caps[2] =
+ (1 << 8) | /* SEPARATE_SRC_AND_DST_INDEX_CPBLTY */
+ (1 << 7) | /* DST_DOUBLE_INDEX_ADRS_CPBLTY */
+ (1 << 6) | /* DST_SINGLE_INDEX_ADRS_CPBLTY */
+ (1 << 5) | /* DST_POST_INCRMNT_ADRS_CPBLTY */
+ (1 << 4) | /* DST_CONST_ADRS_CPBLTY */
+ (1 << 3) | /* SRC_DOUBLE_INDEX_ADRS_CPBLTY */
+ (1 << 2) | /* SRC_SINGLE_INDEX_ADRS_CPBLTY */
+ (1 << 1) | /* SRC_POST_INCRMNT_ADRS_CPBLTY */
+ (1 << 0); /* SRC_CONST_ADRS_CPBLTY */
+ s->caps[3] =
+ (1 << 6) | /* BLOCK_SYNCHR_CPBLTY (DMA 4 only) */
+ (1 << 7) | /* PKT_SYNCHR_CPBLTY (DMA 4 only) */
+ (1 << 5) | /* CHANNEL_CHAINING_CPBLTY */
+ (1 << 4) | /* LCh_INTERLEAVE_CPBLTY */
+ (1 << 3) | /* AUTOINIT_REPEAT_CPBLTY (DMA 3.2 only) */
+ (1 << 2) | /* AUTOINIT_ENDPROG_CPBLTY (DMA 3.2 only) */
+ (1 << 1) | /* FRAME_SYNCHR_CPBLTY */
+ (1 << 0); /* ELMNT_SYNCHR_CPBLTY */
+ s->caps[4] =
+ (1 << 7) | /* PKT_INTERRUPT_CPBLTY (DMA 4 only) */
+ (1 << 6) | /* SYNC_STATUS_CPBLTY */
+ (1 << 5) | /* BLOCK_INTERRUPT_CPBLTY */
+ (1 << 4) | /* LAST_FRAME_INTERRUPT_CPBLTY */
+ (1 << 3) | /* FRAME_INTERRUPT_CPBLTY */
+ (1 << 2) | /* HALF_FRAME_INTERRUPT_CPBLTY */
+ (1 << 1) | /* EVENT_DROP_INTERRUPT_CPBLTY */
+ (1 << 0); /* TIMEOUT_INTERRUPT_CPBLTY (DMA 3.2 only) */
+ break;
+ }
+}
+
+struct soc_dma_s *omap_dma_init(hwaddr base, qemu_irq *irqs,
+ MemoryRegion *sysmem,
+ qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk,
+ enum omap_dma_model model)
+{
+ int num_irqs, memsize, i;
+ struct omap_dma_s *s = (struct omap_dma_s *)
+ g_malloc0(sizeof(struct omap_dma_s));
+
+ if (model <= omap_dma_3_1) {
+ num_irqs = 6;
+ memsize = 0x800;
+ } else {
+ num_irqs = 16;
+ memsize = 0xc00;
+ }
+ s->model = model;
+ s->mpu = mpu;
+ s->clk = clk;
+ s->lcd_ch.irq = lcd_irq;
+ s->lcd_ch.mpu = mpu;
+
+ s->dma = soc_dma_init((model <= omap_dma_3_1) ? 9 : 16);
+ s->dma->freq = omap_clk_getrate(clk);
+ s->dma->transfer_fn = omap_dma_transfer_generic;
+ s->dma->setup_fn = omap_dma_transfer_setup;
+ s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
+ s->dma->opaque = s;
+
+ while (num_irqs --)
+ s->ch[num_irqs].irq = irqs[num_irqs];
+ for (i = 0; i < 3; i ++) {
+ s->ch[i].sibling = &s->ch[i + 6];
+ s->ch[i + 6].sibling = &s->ch[i];
+ }
+ for (i = (model <= omap_dma_3_1) ? 8 : 15; i >= 0; i --) {
+ s->ch[i].dma = &s->dma->ch[i];
+ s->dma->ch[i].opaque = &s->ch[i];
+ }
+
+ omap_dma_setcaps(s);
+ omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
+ omap_dma_reset(s->dma);
+ omap_dma_clk_update(s, 0, 1);
+
+ memory_region_init_io(&s->iomem, &omap_dma_ops, s, "omap.dma", memsize);
+ memory_region_add_subregion(sysmem, base, &s->iomem);
+
+ mpu->drq = s->dma->drq;
+
+ return s->dma;
+}
+
+static void omap_dma_interrupts_4_update(struct omap_dma_s *s)
+{
+ struct omap_dma_channel_s *ch = s->ch;
+ uint32_t bmp, bit;
+
+ for (bmp = 0, bit = 1; bit; ch ++, bit <<= 1)
+ if (ch->status) {
+ bmp |= bit;
+ ch->cstatus |= ch->status;
+ ch->status = 0;
+ }
+ if ((s->irqstat[0] |= s->irqen[0] & bmp))
+ qemu_irq_raise(s->irq[0]);
+ if ((s->irqstat[1] |= s->irqen[1] & bmp))
+ qemu_irq_raise(s->irq[1]);
+ if ((s->irqstat[2] |= s->irqen[2] & bmp))
+ qemu_irq_raise(s->irq[2]);
+ if ((s->irqstat[3] |= s->irqen[3] & bmp))
+ qemu_irq_raise(s->irq[3]);
+}
+
+static uint64_t omap_dma4_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ int irqn = 0, chnum;
+ struct omap_dma_channel_s *ch;
+
+ if (size == 1) {
+ return omap_badwidth_read16(opaque, addr);
+ }
+
+ switch (addr) {
+ case 0x00: /* DMA4_REVISION */
+ return 0x40;
+
+ case 0x14: /* DMA4_IRQSTATUS_L3 */
+ irqn ++;
+ /* fall through */
+ case 0x10: /* DMA4_IRQSTATUS_L2 */
+ irqn ++;
+ /* fall through */
+ case 0x0c: /* DMA4_IRQSTATUS_L1 */
+ irqn ++;
+ /* fall through */
+ case 0x08: /* DMA4_IRQSTATUS_L0 */
+ return s->irqstat[irqn];
+
+ case 0x24: /* DMA4_IRQENABLE_L3 */
+ irqn ++;
+ /* fall through */
+ case 0x20: /* DMA4_IRQENABLE_L2 */
+ irqn ++;
+ /* fall through */
+ case 0x1c: /* DMA4_IRQENABLE_L1 */
+ irqn ++;
+ /* fall through */
+ case 0x18: /* DMA4_IRQENABLE_L0 */
+ return s->irqen[irqn];
+
+ case 0x28: /* DMA4_SYSSTATUS */
+ return 1; /* RESETDONE */
+
+ case 0x2c: /* DMA4_OCP_SYSCONFIG */
+ return s->ocp;
+
+ case 0x64: /* DMA4_CAPS_0 */
+ return s->caps[0];
+ case 0x6c: /* DMA4_CAPS_2 */
+ return s->caps[2];
+ case 0x70: /* DMA4_CAPS_3 */
+ return s->caps[3];
+ case 0x74: /* DMA4_CAPS_4 */
+ return s->caps[4];
+
+ case 0x78: /* DMA4_GCR */
+ return s->gcr;
+
+ case 0x80 ... 0xfff:
+ addr -= 0x80;
+ chnum = addr / 0x60;
+ ch = s->ch + chnum;
+ addr -= chnum * 0x60;
+ break;
+
+ default:
+ OMAP_BAD_REG(addr);
+ return 0;
+ }
+
+ /* Per-channel registers */
+ switch (addr) {
+ case 0x00: /* DMA4_CCR */
+ return (ch->buf_disable << 25) |
+ (ch->src_sync << 24) |
+ (ch->prefetch << 23) |
+ ((ch->sync & 0x60) << 14) |
+ (ch->bs << 18) |
+ (ch->transparent_copy << 17) |
+ (ch->constant_fill << 16) |
+ (ch->mode[1] << 14) |
+ (ch->mode[0] << 12) |
+ (0 << 10) | (0 << 9) |
+ (ch->suspend << 8) |
+ (ch->enable << 7) |
+ (ch->priority << 6) |
+ (ch->fs << 5) | (ch->sync & 0x1f);
+
+ case 0x04: /* DMA4_CLNK_CTRL */
+ return (ch->link_enabled << 15) | ch->link_next_ch;
+
+ case 0x08: /* DMA4_CICR */
+ return ch->interrupts;
+
+ case 0x0c: /* DMA4_CSR */
+ return ch->cstatus;
+
+ case 0x10: /* DMA4_CSDP */
+ return (ch->endian[0] << 21) |
+ (ch->endian_lock[0] << 20) |
+ (ch->endian[1] << 19) |
+ (ch->endian_lock[1] << 18) |
+ (ch->write_mode << 16) |
+ (ch->burst[1] << 14) |
+ (ch->pack[1] << 13) |
+ (ch->translate[1] << 9) |
+ (ch->burst[0] << 7) |
+ (ch->pack[0] << 6) |
+ (ch->translate[0] << 2) |
+ (ch->data_type >> 1);
+
+ case 0x14: /* DMA4_CEN */
+ return ch->elements;
+
+ case 0x18: /* DMA4_CFN */
+ return ch->frames;
+
+ case 0x1c: /* DMA4_CSSA */
+ return ch->addr[0];
+
+ case 0x20: /* DMA4_CDSA */
+ return ch->addr[1];
+
+ case 0x24: /* DMA4_CSEI */
+ return ch->element_index[0];
+
+ case 0x28: /* DMA4_CSFI */
+ return ch->frame_index[0];
+
+ case 0x2c: /* DMA4_CDEI */
+ return ch->element_index[1];
+
+ case 0x30: /* DMA4_CDFI */
+ return ch->frame_index[1];
+
+ case 0x34: /* DMA4_CSAC */
+ return ch->active_set.src & 0xffff;
+
+ case 0x38: /* DMA4_CDAC */
+ return ch->active_set.dest & 0xffff;
+
+ case 0x3c: /* DMA4_CCEN */
+ return ch->active_set.element;
+
+ case 0x40: /* DMA4_CCFN */
+ return ch->active_set.frame;
+
+ case 0x44: /* DMA4_COLOR */
+ /* XXX only in sDMA */
+ return ch->color;
+
+ default:
+ OMAP_BAD_REG(addr);
+ return 0;
+ }
+}
+
+static void omap_dma4_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ struct omap_dma_s *s = (struct omap_dma_s *) opaque;
+ int chnum, irqn = 0;
+ struct omap_dma_channel_s *ch;
+
+ if (size == 1) {
+ return omap_badwidth_write16(opaque, addr, value);
+ }
+
+ switch (addr) {
+ case 0x14: /* DMA4_IRQSTATUS_L3 */
+ irqn ++;
+ /* fall through */
+ case 0x10: /* DMA4_IRQSTATUS_L2 */
+ irqn ++;
+ /* fall through */
+ case 0x0c: /* DMA4_IRQSTATUS_L1 */
+ irqn ++;
+ /* fall through */
+ case 0x08: /* DMA4_IRQSTATUS_L0 */
+ s->irqstat[irqn] &= ~value;
+ if (!s->irqstat[irqn])
+ qemu_irq_lower(s->irq[irqn]);
+ return;
+
+ case 0x24: /* DMA4_IRQENABLE_L3 */
+ irqn ++;
+ /* fall through */
+ case 0x20: /* DMA4_IRQENABLE_L2 */
+ irqn ++;
+ /* fall through */
+ case 0x1c: /* DMA4_IRQENABLE_L1 */
+ irqn ++;
+ /* fall through */
+ case 0x18: /* DMA4_IRQENABLE_L0 */
+ s->irqen[irqn] = value;
+ return;
+
+ case 0x2c: /* DMA4_OCP_SYSCONFIG */
+ if (value & 2) /* SOFTRESET */
+ omap_dma_reset(s->dma);
+ s->ocp = value & 0x3321;
+ if (((s->ocp >> 12) & 3) == 3) /* MIDLEMODE */
+ fprintf(stderr, "%s: invalid DMA power mode\n", __FUNCTION__);
+ return;
+
+ case 0x78: /* DMA4_GCR */
+ s->gcr = value & 0x00ff00ff;
+ if ((value & 0xff) == 0x00) /* MAX_CHANNEL_FIFO_DEPTH */
+ fprintf(stderr, "%s: wrong FIFO depth in GCR\n", __FUNCTION__);
+ return;
+
+ case 0x80 ... 0xfff:
+ addr -= 0x80;
+ chnum = addr / 0x60;
+ ch = s->ch + chnum;
+ addr -= chnum * 0x60;
+ break;
+
+ case 0x00: /* DMA4_REVISION */
+ case 0x28: /* DMA4_SYSSTATUS */
+ case 0x64: /* DMA4_CAPS_0 */
+ case 0x6c: /* DMA4_CAPS_2 */
+ case 0x70: /* DMA4_CAPS_3 */
+ case 0x74: /* DMA4_CAPS_4 */
+ OMAP_RO_REG(addr);
+ return;
+
+ default:
+ OMAP_BAD_REG(addr);
+ return;
+ }
+
+ /* Per-channel registers */
+ switch (addr) {
+ case 0x00: /* DMA4_CCR */
+ ch->buf_disable = (value >> 25) & 1;
+ ch->src_sync = (value >> 24) & 1; /* XXX For CamDMA must be 1 */
+ if (ch->buf_disable && !ch->src_sync)
+ fprintf(stderr, "%s: Buffering disable is not allowed in "
+ "destination synchronised mode\n", __FUNCTION__);
+ ch->prefetch = (value >> 23) & 1;
+ ch->bs = (value >> 18) & 1;
+ ch->transparent_copy = (value >> 17) & 1;
+ ch->constant_fill = (value >> 16) & 1;
+ ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
+ ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
+ ch->suspend = (value & 0x0100) >> 8;
+ ch->priority = (value & 0x0040) >> 6;
+ ch->fs = (value & 0x0020) >> 5;
+ if (ch->fs && ch->bs && ch->mode[0] && ch->mode[1])
+ fprintf(stderr, "%s: For a packet transfer at least one port "
+ "must be constant-addressed\n", __FUNCTION__);
+ ch->sync = (value & 0x001f) | ((value >> 14) & 0x0060);
+ /* XXX must be 0x01 for CamDMA */
+
+ if (value & 0x0080)
+ omap_dma_enable_channel(s, ch);
+ else
+ omap_dma_disable_channel(s, ch);
+
+ break;
+
+ case 0x04: /* DMA4_CLNK_CTRL */
+ ch->link_enabled = (value >> 15) & 0x1;
+ ch->link_next_ch = value & 0x1f;
+ break;
+
+ case 0x08: /* DMA4_CICR */
+ ch->interrupts = value & 0x09be;
+ break;
+
+ case 0x0c: /* DMA4_CSR */
+ ch->cstatus &= ~value;
+ break;
+
+ case 0x10: /* DMA4_CSDP */
+ ch->endian[0] =(value >> 21) & 1;
+ ch->endian_lock[0] =(value >> 20) & 1;
+ ch->endian[1] =(value >> 19) & 1;
+ ch->endian_lock[1] =(value >> 18) & 1;
+ if (ch->endian[0] != ch->endian[1])
+ fprintf(stderr, "%s: DMA endiannes conversion enable attempt\n",
+ __FUNCTION__);
+ ch->write_mode = (value >> 16) & 3;
+ ch->burst[1] = (value & 0xc000) >> 14;
+ ch->pack[1] = (value & 0x2000) >> 13;
+ ch->translate[1] = (value & 0x1e00) >> 9;
+ ch->burst[0] = (value & 0x0180) >> 7;
+ ch->pack[0] = (value & 0x0040) >> 6;
+ ch->translate[0] = (value & 0x003c) >> 2;
+ if (ch->translate[0] | ch->translate[1])
+ fprintf(stderr, "%s: bad MReqAddressTranslate sideband signal\n",
+ __FUNCTION__);
+ ch->data_type = 1 << (value & 3);
+ if ((value & 3) == 3)
+ printf("%s: bad data_type for DMA channel\n", __FUNCTION__);
+ break;
+
+ case 0x14: /* DMA4_CEN */
+ ch->set_update = 1;
+ ch->elements = value & 0xffffff;
+ break;
+
+ case 0x18: /* DMA4_CFN */
+ ch->frames = value & 0xffff;
+ ch->set_update = 1;
+ break;
+
+ case 0x1c: /* DMA4_CSSA */
+ ch->addr[0] = (hwaddr) (uint32_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x20: /* DMA4_CDSA */
+ ch->addr[1] = (hwaddr) (uint32_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x24: /* DMA4_CSEI */
+ ch->element_index[0] = (int16_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x28: /* DMA4_CSFI */
+ ch->frame_index[0] = (int32_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x2c: /* DMA4_CDEI */
+ ch->element_index[1] = (int16_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x30: /* DMA4_CDFI */
+ ch->frame_index[1] = (int32_t) value;
+ ch->set_update = 1;
+ break;
+
+ case 0x44: /* DMA4_COLOR */
+ /* XXX only in sDMA */
+ ch->color = value;
+ break;
+
+ case 0x34: /* DMA4_CSAC */
+ case 0x38: /* DMA4_CDAC */
+ case 0x3c: /* DMA4_CCEN */
+ case 0x40: /* DMA4_CCFN */
+ OMAP_RO_REG(addr);
+ break;
+
+ default:
+ OMAP_BAD_REG(addr);
+ }
+}
+
+static const MemoryRegionOps omap_dma4_ops = {
+ .read = omap_dma4_read,
+ .write = omap_dma4_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+struct soc_dma_s *omap_dma4_init(hwaddr base, qemu_irq *irqs,
+ MemoryRegion *sysmem,
+ struct omap_mpu_state_s *mpu, int fifo,
+ int chans, omap_clk iclk, omap_clk fclk)
+{
+ int i;
+ struct omap_dma_s *s = (struct omap_dma_s *)
+ g_malloc0(sizeof(struct omap_dma_s));
+
+ s->model = omap_dma_4;
+ s->chans = chans;
+ s->mpu = mpu;
+ s->clk = fclk;
+
+ s->dma = soc_dma_init(s->chans);
+ s->dma->freq = omap_clk_getrate(fclk);
+ s->dma->transfer_fn = omap_dma_transfer_generic;
+ s->dma->setup_fn = omap_dma_transfer_setup;
+ s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 64);
+ s->dma->opaque = s;
+ for (i = 0; i < s->chans; i ++) {
+ s->ch[i].dma = &s->dma->ch[i];
+ s->dma->ch[i].opaque = &s->ch[i];
+ }
+
+ memcpy(&s->irq, irqs, sizeof(s->irq));
+ s->intr_update = omap_dma_interrupts_4_update;
+
+ omap_dma_setcaps(s);
+ omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
+ omap_dma_reset(s->dma);
+ omap_dma_clk_update(s, 0, !!s->dma->freq);
+
+ memory_region_init_io(&s->iomem, &omap_dma4_ops, s, "omap.dma4", 0x1000);
+ memory_region_add_subregion(sysmem, base, &s->iomem);
+
+ mpu->drq = s->dma->drq;
+
+ return s->dma;
+}
+
+struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct soc_dma_s *dma)
+{
+ struct omap_dma_s *s = dma->opaque;
+
+ return &s->lcd_ch;
+}
--- /dev/null
+/*
+ * Intel XScale PXA255/270 DMA controller.
+ *
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Copyright (c) 2006 Thorsten Zitterell
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "hw/hw.h"
+#include "hw/arm/pxa.h"
+#include "hw/sysbus.h"
+
+#define PXA255_DMA_NUM_CHANNELS 16
+#define PXA27X_DMA_NUM_CHANNELS 32
+
+#define PXA2XX_DMA_NUM_REQUESTS 75
+
+typedef struct {
+ uint32_t descr;
+ uint32_t src;
+ uint32_t dest;
+ uint32_t cmd;
+ uint32_t state;
+ int request;
+} PXA2xxDMAChannel;
+
+typedef struct PXA2xxDMAState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ qemu_irq irq;
+
+ uint32_t stopintr;
+ uint32_t eorintr;
+ uint32_t rasintr;
+ uint32_t startintr;
+ uint32_t endintr;
+
+ uint32_t align;
+ uint32_t pio;
+
+ int channels;
+ PXA2xxDMAChannel *chan;
+
+ uint8_t req[PXA2XX_DMA_NUM_REQUESTS];
+
+ /* Flag to avoid recursive DMA invocations. */
+ int running;
+} PXA2xxDMAState;
+
+#define DCSR0 0x0000 /* DMA Control / Status register for Channel 0 */
+#define DCSR31 0x007c /* DMA Control / Status register for Channel 31 */
+#define DALGN 0x00a0 /* DMA Alignment register */
+#define DPCSR 0x00a4 /* DMA Programmed I/O Control Status register */
+#define DRQSR0 0x00e0 /* DMA DREQ<0> Status register */
+#define DRQSR1 0x00e4 /* DMA DREQ<1> Status register */
+#define DRQSR2 0x00e8 /* DMA DREQ<2> Status register */
+#define DINT 0x00f0 /* DMA Interrupt register */
+#define DRCMR0 0x0100 /* Request to Channel Map register 0 */
+#define DRCMR63 0x01fc /* Request to Channel Map register 63 */
+#define D_CH0 0x0200 /* Channel 0 Descriptor start */
+#define DRCMR64 0x1100 /* Request to Channel Map register 64 */
+#define DRCMR74 0x1128 /* Request to Channel Map register 74 */
+
+/* Per-channel register */
+#define DDADR 0x00
+#define DSADR 0x01
+#define DTADR 0x02
+#define DCMD 0x03
+
+/* Bit-field masks */
+#define DRCMR_CHLNUM 0x1f
+#define DRCMR_MAPVLD (1 << 7)
+#define DDADR_STOP (1 << 0)
+#define DDADR_BREN (1 << 1)
+#define DCMD_LEN 0x1fff
+#define DCMD_WIDTH(x) (1 << ((((x) >> 14) & 3) - 1))
+#define DCMD_SIZE(x) (4 << (((x) >> 16) & 3))
+#define DCMD_FLYBYT (1 << 19)
+#define DCMD_FLYBYS (1 << 20)
+#define DCMD_ENDIRQEN (1 << 21)
+#define DCMD_STARTIRQEN (1 << 22)
+#define DCMD_CMPEN (1 << 25)
+#define DCMD_FLOWTRG (1 << 28)
+#define DCMD_FLOWSRC (1 << 29)
+#define DCMD_INCTRGADDR (1 << 30)
+#define DCMD_INCSRCADDR (1 << 31)
+#define DCSR_BUSERRINTR (1 << 0)
+#define DCSR_STARTINTR (1 << 1)
+#define DCSR_ENDINTR (1 << 2)
+#define DCSR_STOPINTR (1 << 3)
+#define DCSR_RASINTR (1 << 4)
+#define DCSR_REQPEND (1 << 8)
+#define DCSR_EORINT (1 << 9)
+#define DCSR_CMPST (1 << 10)
+#define DCSR_MASKRUN (1 << 22)
+#define DCSR_RASIRQEN (1 << 23)
+#define DCSR_CLRCMPST (1 << 24)
+#define DCSR_SETCMPST (1 << 25)
+#define DCSR_EORSTOPEN (1 << 26)
+#define DCSR_EORJMPEN (1 << 27)
+#define DCSR_EORIRQEN (1 << 28)
+#define DCSR_STOPIRQEN (1 << 29)
+#define DCSR_NODESCFETCH (1 << 30)
+#define DCSR_RUN (1 << 31)
+
+static inline void pxa2xx_dma_update(PXA2xxDMAState *s, int ch)
+{
+ if (ch >= 0) {
+ if ((s->chan[ch].state & DCSR_STOPIRQEN) &&
+ (s->chan[ch].state & DCSR_STOPINTR))
+ s->stopintr |= 1 << ch;
+ else
+ s->stopintr &= ~(1 << ch);
+
+ if ((s->chan[ch].state & DCSR_EORIRQEN) &&
+ (s->chan[ch].state & DCSR_EORINT))
+ s->eorintr |= 1 << ch;
+ else
+ s->eorintr &= ~(1 << ch);
+
+ if ((s->chan[ch].state & DCSR_RASIRQEN) &&
+ (s->chan[ch].state & DCSR_RASINTR))
+ s->rasintr |= 1 << ch;
+ else
+ s->rasintr &= ~(1 << ch);
+
+ if (s->chan[ch].state & DCSR_STARTINTR)
+ s->startintr |= 1 << ch;
+ else
+ s->startintr &= ~(1 << ch);
+
+ if (s->chan[ch].state & DCSR_ENDINTR)
+ s->endintr |= 1 << ch;
+ else
+ s->endintr &= ~(1 << ch);
+ }
+
+ if (s->stopintr | s->eorintr | s->rasintr | s->startintr | s->endintr)
+ qemu_irq_raise(s->irq);
+ else
+ qemu_irq_lower(s->irq);
+}
+
+static inline void pxa2xx_dma_descriptor_fetch(
+ PXA2xxDMAState *s, int ch)
+{
+ uint32_t desc[4];
+ hwaddr daddr = s->chan[ch].descr & ~0xf;
+ if ((s->chan[ch].descr & DDADR_BREN) && (s->chan[ch].state & DCSR_CMPST))
+ daddr += 32;
+
+ cpu_physical_memory_read(daddr, (uint8_t *) desc, 16);
+ s->chan[ch].descr = desc[DDADR];
+ s->chan[ch].src = desc[DSADR];
+ s->chan[ch].dest = desc[DTADR];
+ s->chan[ch].cmd = desc[DCMD];
+
+ if (s->chan[ch].cmd & DCMD_FLOWSRC)
+ s->chan[ch].src &= ~3;
+ if (s->chan[ch].cmd & DCMD_FLOWTRG)
+ s->chan[ch].dest &= ~3;
+
+ if (s->chan[ch].cmd & (DCMD_CMPEN | DCMD_FLYBYS | DCMD_FLYBYT))
+ printf("%s: unsupported mode in channel %i\n", __FUNCTION__, ch);
+
+ if (s->chan[ch].cmd & DCMD_STARTIRQEN)
+ s->chan[ch].state |= DCSR_STARTINTR;
+}
+
+static void pxa2xx_dma_run(PXA2xxDMAState *s)
+{
+ int c, srcinc, destinc;
+ uint32_t n, size;
+ uint32_t width;
+ uint32_t length;
+ uint8_t buffer[32];
+ PXA2xxDMAChannel *ch;
+
+ if (s->running ++)
+ return;
+
+ while (s->running) {
+ s->running = 1;
+ for (c = 0; c < s->channels; c ++) {
+ ch = &s->chan[c];
+
+ while ((ch->state & DCSR_RUN) && !(ch->state & DCSR_STOPINTR)) {
+ /* Test for pending requests */
+ if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) && !ch->request)
+ break;
+
+ length = ch->cmd & DCMD_LEN;
+ size = DCMD_SIZE(ch->cmd);
+ width = DCMD_WIDTH(ch->cmd);
+
+ srcinc = (ch->cmd & DCMD_INCSRCADDR) ? width : 0;
+ destinc = (ch->cmd & DCMD_INCTRGADDR) ? width : 0;
+
+ while (length) {
+ size = MIN(length, size);
+
+ for (n = 0; n < size; n += width) {
+ cpu_physical_memory_read(ch->src, buffer + n, width);
+ ch->src += srcinc;
+ }
+
+ for (n = 0; n < size; n += width) {
+ cpu_physical_memory_write(ch->dest, buffer + n, width);
+ ch->dest += destinc;
+ }
+
+ length -= size;
+
+ if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) &&
+ !ch->request) {
+ ch->state |= DCSR_EORINT;
+ if (ch->state & DCSR_EORSTOPEN)
+ ch->state |= DCSR_STOPINTR;
+ if ((ch->state & DCSR_EORJMPEN) &&
+ !(ch->state & DCSR_NODESCFETCH))
+ pxa2xx_dma_descriptor_fetch(s, c);
+ break;
+ }
+ }
+
+ ch->cmd = (ch->cmd & ~DCMD_LEN) | length;
+
+ /* Is the transfer complete now? */
+ if (!length) {
+ if (ch->cmd & DCMD_ENDIRQEN)
+ ch->state |= DCSR_ENDINTR;
+
+ if ((ch->state & DCSR_NODESCFETCH) ||
+ (ch->descr & DDADR_STOP) ||
+ (ch->state & DCSR_EORSTOPEN)) {
+ ch->state |= DCSR_STOPINTR;
+ ch->state &= ~DCSR_RUN;
+
+ break;
+ }
+
+ ch->state |= DCSR_STOPINTR;
+ break;
+ }
+ }
+ }
+
+ s->running --;
+ }
+}
+
+static uint64_t pxa2xx_dma_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
+ unsigned int channel;
+
+ if (size != 4) {
+ hw_error("%s: Bad access width\n", __FUNCTION__);
+ return 5;
+ }
+
+ switch (offset) {
+ case DRCMR64 ... DRCMR74:
+ offset -= DRCMR64 - DRCMR0 - (64 << 2);
+ /* Fall through */
+ case DRCMR0 ... DRCMR63:
+ channel = (offset - DRCMR0) >> 2;
+ return s->req[channel];
+
+ case DRQSR0:
+ case DRQSR1:
+ case DRQSR2:
+ return 0;
+
+ case DCSR0 ... DCSR31:
+ channel = offset >> 2;
+ if (s->chan[channel].request)
+ return s->chan[channel].state | DCSR_REQPEND;
+ return s->chan[channel].state;
+
+ case DINT:
+ return s->stopintr | s->eorintr | s->rasintr |
+ s->startintr | s->endintr;
+
+ case DALGN:
+ return s->align;
+
+ case DPCSR:
+ return s->pio;
+ }
+
+ if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) {
+ channel = (offset - D_CH0) >> 4;
+ switch ((offset & 0x0f) >> 2) {
+ case DDADR:
+ return s->chan[channel].descr;
+ case DSADR:
+ return s->chan[channel].src;
+ case DTADR:
+ return s->chan[channel].dest;
+ case DCMD:
+ return s->chan[channel].cmd;
+ }
+ }
+
+ hw_error("%s: Bad offset 0x" TARGET_FMT_plx "\n", __FUNCTION__, offset);
+ return 7;
+}
+
+static void pxa2xx_dma_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+ PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
+ unsigned int channel;
+
+ if (size != 4) {
+ hw_error("%s: Bad access width\n", __FUNCTION__);
+ return;
+ }
+
+ switch (offset) {
+ case DRCMR64 ... DRCMR74:
+ offset -= DRCMR64 - DRCMR0 - (64 << 2);
+ /* Fall through */
+ case DRCMR0 ... DRCMR63:
+ channel = (offset - DRCMR0) >> 2;
+
+ if (value & DRCMR_MAPVLD)
+ if ((value & DRCMR_CHLNUM) > s->channels)
+ hw_error("%s: Bad DMA channel %i\n",
+ __FUNCTION__, (unsigned)value & DRCMR_CHLNUM);
+
+ s->req[channel] = value;
+ break;
+
+ case DRQSR0:
+ case DRQSR1:
+ case DRQSR2:
+ /* Nothing to do */
+ break;
+
+ case DCSR0 ... DCSR31:
+ channel = offset >> 2;
+ s->chan[channel].state &= 0x0000071f & ~(value &
+ (DCSR_EORINT | DCSR_ENDINTR |
+ DCSR_STARTINTR | DCSR_BUSERRINTR));
+ s->chan[channel].state |= value & 0xfc800000;
+
+ if (s->chan[channel].state & DCSR_STOPIRQEN)
+ s->chan[channel].state &= ~DCSR_STOPINTR;
+
+ if (value & DCSR_NODESCFETCH) {
+ /* No-descriptor-fetch mode */
+ if (value & DCSR_RUN) {
+ s->chan[channel].state &= ~DCSR_STOPINTR;
+ pxa2xx_dma_run(s);
+ }
+ } else {
+ /* Descriptor-fetch mode */
+ if (value & DCSR_RUN) {
+ s->chan[channel].state &= ~DCSR_STOPINTR;
+ pxa2xx_dma_descriptor_fetch(s, channel);
+ pxa2xx_dma_run(s);
+ }
+ }
+
+ /* Shouldn't matter as our DMA is synchronous. */
+ if (!(value & (DCSR_RUN | DCSR_MASKRUN)))
+ s->chan[channel].state |= DCSR_STOPINTR;
+
+ if (value & DCSR_CLRCMPST)
+ s->chan[channel].state &= ~DCSR_CMPST;
+ if (value & DCSR_SETCMPST)
+ s->chan[channel].state |= DCSR_CMPST;
+
+ pxa2xx_dma_update(s, channel);
+ break;
+
+ case DALGN:
+ s->align = value;
+ break;
+
+ case DPCSR:
+ s->pio = value & 0x80000001;
+ break;
+
+ default:
+ if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) {
+ channel = (offset - D_CH0) >> 4;
+ switch ((offset & 0x0f) >> 2) {
+ case DDADR:
+ s->chan[channel].descr = value;
+ break;
+ case DSADR:
+ s->chan[channel].src = value;
+ break;
+ case DTADR:
+ s->chan[channel].dest = value;
+ break;
+ case DCMD:
+ s->chan[channel].cmd = value;
+ break;
+ default:
+ goto fail;
+ }
+
+ break;
+ }
+ fail:
+ hw_error("%s: Bad offset " TARGET_FMT_plx "\n", __FUNCTION__, offset);
+ }
+}
+
+static const MemoryRegionOps pxa2xx_dma_ops = {
+ .read = pxa2xx_dma_read,
+ .write = pxa2xx_dma_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void pxa2xx_dma_request(void *opaque, int req_num, int on)
+{
+ PXA2xxDMAState *s = opaque;
+ int ch;
+ if (req_num < 0 || req_num >= PXA2XX_DMA_NUM_REQUESTS)
+ hw_error("%s: Bad DMA request %i\n", __FUNCTION__, req_num);
+
+ if (!(s->req[req_num] & DRCMR_MAPVLD))
+ return;
+ ch = s->req[req_num] & DRCMR_CHLNUM;
+
+ if (!s->chan[ch].request && on)
+ s->chan[ch].state |= DCSR_RASINTR;
+ else
+ s->chan[ch].state &= ~DCSR_RASINTR;
+ if (s->chan[ch].request && !on)
+ s->chan[ch].state |= DCSR_EORINT;
+
+ s->chan[ch].request = on;
+ if (on) {
+ pxa2xx_dma_run(s);
+ pxa2xx_dma_update(s, ch);
+ }
+}
+
+static int pxa2xx_dma_init(SysBusDevice *dev)
+{
+ int i;
+ PXA2xxDMAState *s;
+ s = FROM_SYSBUS(PXA2xxDMAState, dev);
+
+ if (s->channels <= 0) {
+ return -1;
+ }
+
+ s->chan = g_malloc0(sizeof(PXA2xxDMAChannel) * s->channels);
+
+ memset(s->chan, 0, sizeof(PXA2xxDMAChannel) * s->channels);
+ for (i = 0; i < s->channels; i ++)
+ s->chan[i].state = DCSR_STOPINTR;
+
+ memset(s->req, 0, sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS);
+
+ qdev_init_gpio_in(&dev->qdev, pxa2xx_dma_request, PXA2XX_DMA_NUM_REQUESTS);
+
+ memory_region_init_io(&s->iomem, &pxa2xx_dma_ops, s,
+ "pxa2xx.dma", 0x00010000);
+ sysbus_init_mmio(dev, &s->iomem);
+ sysbus_init_irq(dev, &s->irq);
+
+ return 0;
+}
+
+DeviceState *pxa27x_dma_init(hwaddr base, qemu_irq irq)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "pxa2xx-dma");
+ qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
+
+ return dev;
+}
+
+DeviceState *pxa255_dma_init(hwaddr base, qemu_irq irq)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "pxa2xx-dma");
+ qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
+
+ return dev;
+}
+
+static bool is_version_0(void *opaque, int version_id)
+{
+ return version_id == 0;
+}
+
+static VMStateDescription vmstate_pxa2xx_dma_chan = {
+ .name = "pxa2xx_dma_chan",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(descr, PXA2xxDMAChannel),
+ VMSTATE_UINT32(src, PXA2xxDMAChannel),
+ VMSTATE_UINT32(dest, PXA2xxDMAChannel),
+ VMSTATE_UINT32(cmd, PXA2xxDMAChannel),
+ VMSTATE_UINT32(state, PXA2xxDMAChannel),
+ VMSTATE_INT32(request, PXA2xxDMAChannel),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static VMStateDescription vmstate_pxa2xx_dma = {
+ .name = "pxa2xx_dma",
+ .version_id = 1,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UNUSED_TEST(is_version_0, 4),
+ VMSTATE_UINT32(stopintr, PXA2xxDMAState),
+ VMSTATE_UINT32(eorintr, PXA2xxDMAState),
+ VMSTATE_UINT32(rasintr, PXA2xxDMAState),
+ VMSTATE_UINT32(startintr, PXA2xxDMAState),
+ VMSTATE_UINT32(endintr, PXA2xxDMAState),
+ VMSTATE_UINT32(align, PXA2xxDMAState),
+ VMSTATE_UINT32(pio, PXA2xxDMAState),
+ VMSTATE_BUFFER(req, PXA2xxDMAState),
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(chan, PXA2xxDMAState, channels,
+ vmstate_pxa2xx_dma_chan, PXA2xxDMAChannel),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static Property pxa2xx_dma_properties[] = {
+ DEFINE_PROP_INT32("channels", PXA2xxDMAState, channels, -1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void pxa2xx_dma_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = pxa2xx_dma_init;
+ dc->desc = "PXA2xx DMA controller";
+ dc->vmsd = &vmstate_pxa2xx_dma;
+ dc->props = pxa2xx_dma_properties;
+}
+
+static const TypeInfo pxa2xx_dma_info = {
+ .name = "pxa2xx-dma",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(PXA2xxDMAState),
+ .class_init = pxa2xx_dma_class_init,
+};
+
+static void pxa2xx_dma_register_types(void)
+{
+ type_register_static(&pxa2xx_dma_info);
+}
+
+type_init(pxa2xx_dma_register_types)
--- /dev/null
+/*
+ * On-chip DMA controller framework.
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Written by Andrzej Zaborowski <andrew@openedhand.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "qemu-common.h"
+#include "qemu/timer.h"
+#include "hw/arm/soc_dma.h"
+
+static void transfer_mem2mem(struct soc_dma_ch_s *ch)
+{
+ memcpy(ch->paddr[0], ch->paddr[1], ch->bytes);
+ ch->paddr[0] += ch->bytes;
+ ch->paddr[1] += ch->bytes;
+}
+
+static void transfer_mem2fifo(struct soc_dma_ch_s *ch)
+{
+ ch->io_fn[1](ch->io_opaque[1], ch->paddr[0], ch->bytes);
+ ch->paddr[0] += ch->bytes;
+}
+
+static void transfer_fifo2mem(struct soc_dma_ch_s *ch)
+{
+ ch->io_fn[0](ch->io_opaque[0], ch->paddr[1], ch->bytes);
+ ch->paddr[1] += ch->bytes;
+}
+
+/* This is further optimisable but isn't very important because often
+ * DMA peripherals forbid this kind of transfers and even when they don't,
+ * oprating systems may not need to use them. */
+static void *fifo_buf;
+static int fifo_size;
+static void transfer_fifo2fifo(struct soc_dma_ch_s *ch)
+{
+ if (ch->bytes > fifo_size)
+ fifo_buf = g_realloc(fifo_buf, fifo_size = ch->bytes);
+
+ /* Implement as transfer_fifo2linear + transfer_linear2fifo. */
+ ch->io_fn[0](ch->io_opaque[0], fifo_buf, ch->bytes);
+ ch->io_fn[1](ch->io_opaque[1], fifo_buf, ch->bytes);
+}
+
+struct dma_s {
+ struct soc_dma_s soc;
+ int chnum;
+ uint64_t ch_enable_mask;
+ int64_t channel_freq;
+ int enabled_count;
+
+ struct memmap_entry_s {
+ enum soc_dma_port_type type;
+ hwaddr addr;
+ union {
+ struct {
+ void *opaque;
+ soc_dma_io_t fn;
+ int out;
+ } fifo;
+ struct {
+ void *base;
+ size_t size;
+ } mem;
+ } u;
+ } *memmap;
+ int memmap_size;
+
+ struct soc_dma_ch_s ch[0];
+};
+
+static void soc_dma_ch_schedule(struct soc_dma_ch_s *ch, int delay_bytes)
+{
+ int64_t now = qemu_get_clock_ns(vm_clock);
+ struct dma_s *dma = (struct dma_s *) ch->dma;
+
+ qemu_mod_timer(ch->timer, now + delay_bytes / dma->channel_freq);
+}
+
+static void soc_dma_ch_run(void *opaque)
+{
+ struct soc_dma_ch_s *ch = (struct soc_dma_ch_s *) opaque;
+
+ ch->running = 1;
+ ch->dma->setup_fn(ch);
+ ch->transfer_fn(ch);
+ ch->running = 0;
+
+ if (ch->enable)
+ soc_dma_ch_schedule(ch, ch->bytes);
+ ch->bytes = 0;
+}
+
+static inline struct memmap_entry_s *soc_dma_lookup(struct dma_s *dma,
+ hwaddr addr)
+{
+ struct memmap_entry_s *lo;
+ int hi;
+
+ lo = dma->memmap;
+ hi = dma->memmap_size;
+
+ while (hi > 1) {
+ hi /= 2;
+ if (lo[hi].addr <= addr)
+ lo += hi;
+ }
+
+ return lo;
+}
+
+static inline enum soc_dma_port_type soc_dma_ch_update_type(
+ struct soc_dma_ch_s *ch, int port)
+{
+ struct dma_s *dma = (struct dma_s *) ch->dma;
+ struct memmap_entry_s *entry = soc_dma_lookup(dma, ch->vaddr[port]);
+
+ if (entry->type == soc_dma_port_fifo) {
+ while (entry < dma->memmap + dma->memmap_size &&
+ entry->u.fifo.out != port)
+ entry ++;
+ if (entry->addr != ch->vaddr[port] || entry->u.fifo.out != port)
+ return soc_dma_port_other;
+
+ if (ch->type[port] != soc_dma_access_const)
+ return soc_dma_port_other;
+
+ ch->io_fn[port] = entry->u.fifo.fn;
+ ch->io_opaque[port] = entry->u.fifo.opaque;
+ return soc_dma_port_fifo;
+ } else if (entry->type == soc_dma_port_mem) {
+ if (entry->addr > ch->vaddr[port] ||
+ entry->addr + entry->u.mem.size <= ch->vaddr[port])
+ return soc_dma_port_other;
+
+ /* TODO: support constant memory address for source port as used for
+ * drawing solid rectangles by PalmOS(R). */
+ if (ch->type[port] != soc_dma_access_const)
+ return soc_dma_port_other;
+
+ ch->paddr[port] = (uint8_t *) entry->u.mem.base +
+ (ch->vaddr[port] - entry->addr);
+ /* TODO: save bytes left to the end of the mapping somewhere so we
+ * can check we're not reading beyond it. */
+ return soc_dma_port_mem;
+ } else
+ return soc_dma_port_other;
+}
+
+void soc_dma_ch_update(struct soc_dma_ch_s *ch)
+{
+ enum soc_dma_port_type src, dst;
+
+ src = soc_dma_ch_update_type(ch, 0);
+ if (src == soc_dma_port_other) {
+ ch->update = 0;
+ ch->transfer_fn = ch->dma->transfer_fn;
+ return;
+ }
+ dst = soc_dma_ch_update_type(ch, 1);
+
+ /* TODO: use src and dst as array indices. */
+ if (src == soc_dma_port_mem && dst == soc_dma_port_mem)
+ ch->transfer_fn = transfer_mem2mem;
+ else if (src == soc_dma_port_mem && dst == soc_dma_port_fifo)
+ ch->transfer_fn = transfer_mem2fifo;
+ else if (src == soc_dma_port_fifo && dst == soc_dma_port_mem)
+ ch->transfer_fn = transfer_fifo2mem;
+ else if (src == soc_dma_port_fifo && dst == soc_dma_port_fifo)
+ ch->transfer_fn = transfer_fifo2fifo;
+ else
+ ch->transfer_fn = ch->dma->transfer_fn;
+
+ ch->update = (dst != soc_dma_port_other);
+}
+
+static void soc_dma_ch_freq_update(struct dma_s *s)
+{
+ if (s->enabled_count)
+ /* We completely ignore channel priorities and stuff */
+ s->channel_freq = s->soc.freq / s->enabled_count;
+ else {
+ /* TODO: Signal that we want to disable the functional clock and let
+ * the platform code decide what to do with it, i.e. check that
+ * auto-idle is enabled in the clock controller and if we are stopping
+ * the clock, do the same with any parent clocks that had only one
+ * user keeping them on and auto-idle enabled. */
+ }
+}
+
+void soc_dma_set_request(struct soc_dma_ch_s *ch, int level)
+{
+ struct dma_s *dma = (struct dma_s *) ch->dma;
+
+ dma->enabled_count += level - ch->enable;
+
+ if (level)
+ dma->ch_enable_mask |= 1 << ch->num;
+ else
+ dma->ch_enable_mask &= ~(1 << ch->num);
+
+ if (level != ch->enable) {
+ soc_dma_ch_freq_update(dma);
+ ch->enable = level;
+
+ if (!ch->enable)
+ qemu_del_timer(ch->timer);
+ else if (!ch->running)
+ soc_dma_ch_run(ch);
+ else
+ soc_dma_ch_schedule(ch, 1);
+ }
+}
+
+void soc_dma_reset(struct soc_dma_s *soc)
+{
+ struct dma_s *s = (struct dma_s *) soc;
+
+ s->soc.drqbmp = 0;
+ s->ch_enable_mask = 0;
+ s->enabled_count = 0;
+ soc_dma_ch_freq_update(s);
+}
+
+/* TODO: take a functional-clock argument */
+struct soc_dma_s *soc_dma_init(int n)
+{
+ int i;
+ struct dma_s *s = g_malloc0(sizeof(*s) + n * sizeof(*s->ch));
+
+ s->chnum = n;
+ s->soc.ch = s->ch;
+ for (i = 0; i < n; i ++) {
+ s->ch[i].dma = &s->soc;
+ s->ch[i].num = i;
+ s->ch[i].timer = qemu_new_timer_ns(vm_clock, soc_dma_ch_run, &s->ch[i]);
+ }
+
+ soc_dma_reset(&s->soc);
+ fifo_size = 0;
+
+ return &s->soc;
+}
+
+void soc_dma_port_add_fifo(struct soc_dma_s *soc, hwaddr virt_base,
+ soc_dma_io_t fn, void *opaque, int out)
+{
+ struct memmap_entry_s *entry;
+ struct dma_s *dma = (struct dma_s *) soc;
+
+ dma->memmap = g_realloc(dma->memmap, sizeof(*entry) *
+ (dma->memmap_size + 1));
+ entry = soc_dma_lookup(dma, virt_base);
+
+ if (dma->memmap_size) {
+ if (entry->type == soc_dma_port_mem) {
+ if (entry->addr <= virt_base &&
+ entry->addr + entry->u.mem.size > virt_base) {
+ fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx
+ " collides with RAM region at " TARGET_FMT_lx
+ "-" TARGET_FMT_lx "\n", __FUNCTION__,
+ (target_ulong) virt_base,
+ (target_ulong) entry->addr, (target_ulong)
+ (entry->addr + entry->u.mem.size));
+ exit(-1);
+ }
+
+ if (entry->addr <= virt_base)
+ entry ++;
+ } else
+ while (entry < dma->memmap + dma->memmap_size &&
+ entry->addr <= virt_base) {
+ if (entry->addr == virt_base && entry->u.fifo.out == out) {
+ fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx
+ " collides FIFO at " TARGET_FMT_lx "\n",
+ __FUNCTION__, (target_ulong) virt_base,
+ (target_ulong) entry->addr);
+ exit(-1);
+ }
+
+ entry ++;
+ }
+
+ memmove(entry + 1, entry,
+ (uint8_t *) (dma->memmap + dma->memmap_size ++) -
+ (uint8_t *) entry);
+ } else
+ dma->memmap_size ++;
+
+ entry->addr = virt_base;
+ entry->type = soc_dma_port_fifo;
+ entry->u.fifo.fn = fn;
+ entry->u.fifo.opaque = opaque;
+ entry->u.fifo.out = out;
+}
+
+void soc_dma_port_add_mem(struct soc_dma_s *soc, uint8_t *phys_base,
+ hwaddr virt_base, size_t size)
+{
+ struct memmap_entry_s *entry;
+ struct dma_s *dma = (struct dma_s *) soc;
+
+ dma->memmap = g_realloc(dma->memmap, sizeof(*entry) *
+ (dma->memmap_size + 1));
+ entry = soc_dma_lookup(dma, virt_base);
+
+ if (dma->memmap_size) {
+ if (entry->type == soc_dma_port_mem) {
+ if ((entry->addr >= virt_base && entry->addr < virt_base + size) ||
+ (entry->addr <= virt_base &&
+ entry->addr + entry->u.mem.size > virt_base)) {
+ fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx
+ " collides with RAM region at " TARGET_FMT_lx
+ "-" TARGET_FMT_lx "\n", __FUNCTION__,
+ (target_ulong) virt_base,
+ (target_ulong) (virt_base + size),
+ (target_ulong) entry->addr, (target_ulong)
+ (entry->addr + entry->u.mem.size));
+ exit(-1);
+ }
+
+ if (entry->addr <= virt_base)
+ entry ++;
+ } else {
+ if (entry->addr >= virt_base &&
+ entry->addr < virt_base + size) {
+ fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx
+ " collides with FIFO at " TARGET_FMT_lx
+ "\n", __FUNCTION__,
+ (target_ulong) virt_base,
+ (target_ulong) (virt_base + size),
+ (target_ulong) entry->addr);
+ exit(-1);
+ }
+
+ while (entry < dma->memmap + dma->memmap_size &&
+ entry->addr <= virt_base)
+ entry ++;
+ }
+
+ memmove(entry + 1, entry,
+ (uint8_t *) (dma->memmap + dma->memmap_size ++) -
+ (uint8_t *) entry);
+ } else
+ dma->memmap_size ++;
+
+ entry->addr = virt_base;
+ entry->type = soc_dma_port_mem;
+ entry->u.mem.base = phys_base;
+ entry->u.mem.size = size;
+}
+
+/* TODO: port removal for ports like PCMCIA memory */
--- /dev/null
+/*
+ * QEMU Sparc32 DMA controller emulation
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ *
+ * Modifications:
+ * 2010-Feb-14 Artyom Tarasenko : reworked irq generation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/hw.h"
+#include "hw/sparc/sparc32_dma.h"
+#include "hw/sparc/sun4m.h"
+#include "hw/sysbus.h"
+#include "trace.h"
+
+/*
+ * This is the DMA controller part of chip STP2000 (Master I/O), also
+ * produced as NCR89C100. See
+ * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
+ * and
+ * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/DMA2.txt
+ */
+
+#define DMA_REGS 4
+#define DMA_SIZE (4 * sizeof(uint32_t))
+/* We need the mask, because one instance of the device is not page
+ aligned (ledma, start address 0x0010) */
+#define DMA_MASK (DMA_SIZE - 1)
+/* OBP says 0x20 bytes for ledma, the extras are aliased to espdma */
+#define DMA_ETH_SIZE (8 * sizeof(uint32_t))
+#define DMA_MAX_REG_OFFSET (2 * DMA_SIZE - 1)
+
+#define DMA_VER 0xa0000000
+#define DMA_INTR 1
+#define DMA_INTREN 0x10
+#define DMA_WRITE_MEM 0x100
+#define DMA_EN 0x200
+#define DMA_LOADED 0x04000000
+#define DMA_DRAIN_FIFO 0x40
+#define DMA_RESET 0x80
+
+/* XXX SCSI and ethernet should have different read-only bit masks */
+#define DMA_CSR_RO_MASK 0xfe000007
+
+typedef struct DMAState DMAState;
+
+struct DMAState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ uint32_t dmaregs[DMA_REGS];
+ qemu_irq irq;
+ void *iommu;
+ qemu_irq gpio[2];
+ uint32_t is_ledma;
+};
+
+enum {
+ GPIO_RESET = 0,
+ GPIO_DMA,
+};
+
+/* Note: on sparc, the lance 16 bit bus is swapped */
+void ledma_memory_read(void *opaque, hwaddr addr,
+ uint8_t *buf, int len, int do_bswap)
+{
+ DMAState *s = opaque;
+ int i;
+
+ addr |= s->dmaregs[3];
+ trace_ledma_memory_read(addr);
+ if (do_bswap) {
+ sparc_iommu_memory_read(s->iommu, addr, buf, len);
+ } else {
+ addr &= ~1;
+ len &= ~1;
+ sparc_iommu_memory_read(s->iommu, addr, buf, len);
+ for(i = 0; i < len; i += 2) {
+ bswap16s((uint16_t *)(buf + i));
+ }
+ }
+}
+
+void ledma_memory_write(void *opaque, hwaddr addr,
+ uint8_t *buf, int len, int do_bswap)
+{
+ DMAState *s = opaque;
+ int l, i;
+ uint16_t tmp_buf[32];
+
+ addr |= s->dmaregs[3];
+ trace_ledma_memory_write(addr);
+ if (do_bswap) {
+ sparc_iommu_memory_write(s->iommu, addr, buf, len);
+ } else {
+ addr &= ~1;
+ len &= ~1;
+ while (len > 0) {
+ l = len;
+ if (l > sizeof(tmp_buf))
+ l = sizeof(tmp_buf);
+ for(i = 0; i < l; i += 2) {
+ tmp_buf[i >> 1] = bswap16(*(uint16_t *)(buf + i));
+ }
+ sparc_iommu_memory_write(s->iommu, addr, (uint8_t *)tmp_buf, l);
+ len -= l;
+ buf += l;
+ addr += l;
+ }
+ }
+}
+
+static void dma_set_irq(void *opaque, int irq, int level)
+{
+ DMAState *s = opaque;
+ if (level) {
+ s->dmaregs[0] |= DMA_INTR;
+ if (s->dmaregs[0] & DMA_INTREN) {
+ trace_sparc32_dma_set_irq_raise();
+ qemu_irq_raise(s->irq);
+ }
+ } else {
+ if (s->dmaregs[0] & DMA_INTR) {
+ s->dmaregs[0] &= ~DMA_INTR;
+ if (s->dmaregs[0] & DMA_INTREN) {
+ trace_sparc32_dma_set_irq_lower();
+ qemu_irq_lower(s->irq);
+ }
+ }
+ }
+}
+
+void espdma_memory_read(void *opaque, uint8_t *buf, int len)
+{
+ DMAState *s = opaque;
+
+ trace_espdma_memory_read(s->dmaregs[1]);
+ sparc_iommu_memory_read(s->iommu, s->dmaregs[1], buf, len);
+ s->dmaregs[1] += len;
+}
+
+void espdma_memory_write(void *opaque, uint8_t *buf, int len)
+{
+ DMAState *s = opaque;
+
+ trace_espdma_memory_write(s->dmaregs[1]);
+ sparc_iommu_memory_write(s->iommu, s->dmaregs[1], buf, len);
+ s->dmaregs[1] += len;
+}
+
+static uint64_t dma_mem_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ DMAState *s = opaque;
+ uint32_t saddr;
+
+ if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) {
+ /* aliased to espdma, but we can't get there from here */
+ /* buggy driver if using undocumented behavior, just return 0 */
+ trace_sparc32_dma_mem_readl(addr, 0);
+ return 0;
+ }
+ saddr = (addr & DMA_MASK) >> 2;
+ trace_sparc32_dma_mem_readl(addr, s->dmaregs[saddr]);
+ return s->dmaregs[saddr];
+}
+
+static void dma_mem_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ DMAState *s = opaque;
+ uint32_t saddr;
+
+ if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) {
+ /* aliased to espdma, but we can't get there from here */
+ trace_sparc32_dma_mem_writel(addr, 0, val);
+ return;
+ }
+ saddr = (addr & DMA_MASK) >> 2;
+ trace_sparc32_dma_mem_writel(addr, s->dmaregs[saddr], val);
+ switch (saddr) {
+ case 0:
+ if (val & DMA_INTREN) {
+ if (s->dmaregs[0] & DMA_INTR) {
+ trace_sparc32_dma_set_irq_raise();
+ qemu_irq_raise(s->irq);
+ }
+ } else {
+ if (s->dmaregs[0] & (DMA_INTR | DMA_INTREN)) {
+ trace_sparc32_dma_set_irq_lower();
+ qemu_irq_lower(s->irq);
+ }
+ }
+ if (val & DMA_RESET) {
+ qemu_irq_raise(s->gpio[GPIO_RESET]);
+ qemu_irq_lower(s->gpio[GPIO_RESET]);
+ } else if (val & DMA_DRAIN_FIFO) {
+ val &= ~DMA_DRAIN_FIFO;
+ } else if (val == 0)
+ val = DMA_DRAIN_FIFO;
+
+ if (val & DMA_EN && !(s->dmaregs[0] & DMA_EN)) {
+ trace_sparc32_dma_enable_raise();
+ qemu_irq_raise(s->gpio[GPIO_DMA]);
+ } else if (!(val & DMA_EN) && !!(s->dmaregs[0] & DMA_EN)) {
+ trace_sparc32_dma_enable_lower();
+ qemu_irq_lower(s->gpio[GPIO_DMA]);
+ }
+
+ val &= ~DMA_CSR_RO_MASK;
+ val |= DMA_VER;
+ s->dmaregs[0] = (s->dmaregs[0] & DMA_CSR_RO_MASK) | val;
+ break;
+ case 1:
+ s->dmaregs[0] |= DMA_LOADED;
+ /* fall through */
+ default:
+ s->dmaregs[saddr] = val;
+ break;
+ }
+}
+
+static const MemoryRegionOps dma_mem_ops = {
+ .read = dma_mem_read,
+ .write = dma_mem_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+static void dma_reset(DeviceState *d)
+{
+ DMAState *s = container_of(d, DMAState, busdev.qdev);
+
+ memset(s->dmaregs, 0, DMA_SIZE);
+ s->dmaregs[0] = DMA_VER;
+}
+
+static const VMStateDescription vmstate_dma = {
+ .name ="sparc32_dma",
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .minimum_version_id_old = 2,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32_ARRAY(dmaregs, DMAState, DMA_REGS),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int sparc32_dma_init1(SysBusDevice *dev)
+{
+ DMAState *s = FROM_SYSBUS(DMAState, dev);
+ int reg_size;
+
+ sysbus_init_irq(dev, &s->irq);
+
+ reg_size = s->is_ledma ? DMA_ETH_SIZE : DMA_SIZE;
+ memory_region_init_io(&s->iomem, &dma_mem_ops, s, "dma", reg_size);
+ sysbus_init_mmio(dev, &s->iomem);
+
+ qdev_init_gpio_in(&dev->qdev, dma_set_irq, 1);
+ qdev_init_gpio_out(&dev->qdev, s->gpio, 2);
+
+ return 0;
+}
+
+static Property sparc32_dma_properties[] = {
+ DEFINE_PROP_PTR("iommu_opaque", DMAState, iommu),
+ DEFINE_PROP_UINT32("is_ledma", DMAState, is_ledma, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void sparc32_dma_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = sparc32_dma_init1;
+ dc->reset = dma_reset;
+ dc->vmsd = &vmstate_dma;
+ dc->props = sparc32_dma_properties;
+}
+
+static const TypeInfo sparc32_dma_info = {
+ .name = "sparc32_dma",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(DMAState),
+ .class_init = sparc32_dma_class_init,
+};
+
+static void sparc32_dma_register_types(void)
+{
+ type_register_static(&sparc32_dma_info);
+}
+
+type_init(sparc32_dma_register_types)
--- /dev/null
+/*
+ * QEMU Sun4m iommu emulation
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/sparc/sun4m.h"
+#include "hw/sysbus.h"
+#include "trace.h"
+
+/*
+ * I/O MMU used by Sun4m systems
+ *
+ * Chipset docs:
+ * "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01,
+ * http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf
+ */
+
+#define IOMMU_NREGS (4*4096/4)
+#define IOMMU_CTRL (0x0000 >> 2)
+#define IOMMU_CTRL_IMPL 0xf0000000 /* Implementation */
+#define IOMMU_CTRL_VERS 0x0f000000 /* Version */
+#define IOMMU_CTRL_RNGE 0x0000001c /* Mapping RANGE */
+#define IOMMU_RNGE_16MB 0x00000000 /* 0xff000000 -> 0xffffffff */
+#define IOMMU_RNGE_32MB 0x00000004 /* 0xfe000000 -> 0xffffffff */
+#define IOMMU_RNGE_64MB 0x00000008 /* 0xfc000000 -> 0xffffffff */
+#define IOMMU_RNGE_128MB 0x0000000c /* 0xf8000000 -> 0xffffffff */
+#define IOMMU_RNGE_256MB 0x00000010 /* 0xf0000000 -> 0xffffffff */
+#define IOMMU_RNGE_512MB 0x00000014 /* 0xe0000000 -> 0xffffffff */
+#define IOMMU_RNGE_1GB 0x00000018 /* 0xc0000000 -> 0xffffffff */
+#define IOMMU_RNGE_2GB 0x0000001c /* 0x80000000 -> 0xffffffff */
+#define IOMMU_CTRL_ENAB 0x00000001 /* IOMMU Enable */
+#define IOMMU_CTRL_MASK 0x0000001d
+
+#define IOMMU_BASE (0x0004 >> 2)
+#define IOMMU_BASE_MASK 0x07fffc00
+
+#define IOMMU_TLBFLUSH (0x0014 >> 2)
+#define IOMMU_TLBFLUSH_MASK 0xffffffff
+
+#define IOMMU_PGFLUSH (0x0018 >> 2)
+#define IOMMU_PGFLUSH_MASK 0xffffffff
+
+#define IOMMU_AFSR (0x1000 >> 2)
+#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */
+#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after
+ transaction */
+#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than
+ 12.8 us. */
+#define IOMMU_AFSR_BE 0x10000000 /* Write access received error
+ acknowledge */
+#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */
+#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */
+#define IOMMU_AFSR_RESV 0x00800000 /* Reserved, forced to 0x8 by
+ hardware */
+#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */
+#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */
+#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */
+#define IOMMU_AFSR_MASK 0xff0fffff
+
+#define IOMMU_AFAR (0x1004 >> 2)
+
+#define IOMMU_AER (0x1008 >> 2) /* Arbiter Enable Register */
+#define IOMMU_AER_EN_P0_ARB 0x00000001 /* MBus master 0x8 (Always 1) */
+#define IOMMU_AER_EN_P1_ARB 0x00000002 /* MBus master 0x9 */
+#define IOMMU_AER_EN_P2_ARB 0x00000004 /* MBus master 0xa */
+#define IOMMU_AER_EN_P3_ARB 0x00000008 /* MBus master 0xb */
+#define IOMMU_AER_EN_0 0x00010000 /* SBus slot 0 */
+#define IOMMU_AER_EN_1 0x00020000 /* SBus slot 1 */
+#define IOMMU_AER_EN_2 0x00040000 /* SBus slot 2 */
+#define IOMMU_AER_EN_3 0x00080000 /* SBus slot 3 */
+#define IOMMU_AER_EN_F 0x00100000 /* SBus on-board */
+#define IOMMU_AER_SBW 0x80000000 /* S-to-M asynchronous writes */
+#define IOMMU_AER_MASK 0x801f000f
+
+#define IOMMU_SBCFG0 (0x1010 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG3 (0x101c >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when
+ bypass enabled */
+#define IOMMU_SBCFG_BA16 0x00000004 /* Slave supports 16 byte bursts */
+#define IOMMU_SBCFG_BA8 0x00000002 /* Slave supports 8 byte bursts */
+#define IOMMU_SBCFG_BYPASS 0x00000001 /* Bypass IOMMU, treat all addresses
+ produced by this device as pure
+ physical. */
+#define IOMMU_SBCFG_MASK 0x00010003
+
+#define IOMMU_ARBEN (0x2000 >> 2) /* SBUS arbitration enable */
+#define IOMMU_ARBEN_MASK 0x001f0000
+#define IOMMU_MID 0x00000008
+
+#define IOMMU_MASK_ID (0x3018 >> 2) /* Mask ID */
+#define IOMMU_MASK_ID_MASK 0x00ffffff
+
+#define IOMMU_MSII_MASK 0x26000000 /* microSPARC II mask number */
+#define IOMMU_TS_MASK 0x23000000 /* turboSPARC mask number */
+
+/* The format of an iopte in the page tables */
+#define IOPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */
+#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or
+ Viking/MXCC) */
+#define IOPTE_WRITE 0x00000004 /* Writable */
+#define IOPTE_VALID 0x00000002 /* IOPTE is valid */
+#define IOPTE_WAZ 0x00000001 /* Write as zeros */
+
+#define IOMMU_PAGE_SHIFT 12
+#define IOMMU_PAGE_SIZE (1 << IOMMU_PAGE_SHIFT)
+#define IOMMU_PAGE_MASK ~(IOMMU_PAGE_SIZE - 1)
+
+typedef struct IOMMUState {
+ SysBusDevice busdev;
+ MemoryRegion iomem;
+ uint32_t regs[IOMMU_NREGS];
+ hwaddr iostart;
+ qemu_irq irq;
+ uint32_t version;
+} IOMMUState;
+
+static uint64_t iommu_mem_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ IOMMUState *s = opaque;
+ hwaddr saddr;
+ uint32_t ret;
+
+ saddr = addr >> 2;
+ switch (saddr) {
+ default:
+ ret = s->regs[saddr];
+ break;
+ case IOMMU_AFAR:
+ case IOMMU_AFSR:
+ ret = s->regs[saddr];
+ qemu_irq_lower(s->irq);
+ break;
+ }
+ trace_sun4m_iommu_mem_readl(saddr, ret);
+ return ret;
+}
+
+static void iommu_mem_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ IOMMUState *s = opaque;
+ hwaddr saddr;
+
+ saddr = addr >> 2;
+ trace_sun4m_iommu_mem_writel(saddr, val);
+ switch (saddr) {
+ case IOMMU_CTRL:
+ switch (val & IOMMU_CTRL_RNGE) {
+ case IOMMU_RNGE_16MB:
+ s->iostart = 0xffffffffff000000ULL;
+ break;
+ case IOMMU_RNGE_32MB:
+ s->iostart = 0xfffffffffe000000ULL;
+ break;
+ case IOMMU_RNGE_64MB:
+ s->iostart = 0xfffffffffc000000ULL;
+ break;
+ case IOMMU_RNGE_128MB:
+ s->iostart = 0xfffffffff8000000ULL;
+ break;
+ case IOMMU_RNGE_256MB:
+ s->iostart = 0xfffffffff0000000ULL;
+ break;
+ case IOMMU_RNGE_512MB:
+ s->iostart = 0xffffffffe0000000ULL;
+ break;
+ case IOMMU_RNGE_1GB:
+ s->iostart = 0xffffffffc0000000ULL;
+ break;
+ default:
+ case IOMMU_RNGE_2GB:
+ s->iostart = 0xffffffff80000000ULL;
+ break;
+ }
+ trace_sun4m_iommu_mem_writel_ctrl(s->iostart);
+ s->regs[saddr] = ((val & IOMMU_CTRL_MASK) | s->version);
+ break;
+ case IOMMU_BASE:
+ s->regs[saddr] = val & IOMMU_BASE_MASK;
+ break;
+ case IOMMU_TLBFLUSH:
+ trace_sun4m_iommu_mem_writel_tlbflush(val);
+ s->regs[saddr] = val & IOMMU_TLBFLUSH_MASK;
+ break;
+ case IOMMU_PGFLUSH:
+ trace_sun4m_iommu_mem_writel_pgflush(val);
+ s->regs[saddr] = val & IOMMU_PGFLUSH_MASK;
+ break;
+ case IOMMU_AFAR:
+ s->regs[saddr] = val;
+ qemu_irq_lower(s->irq);
+ break;
+ case IOMMU_AER:
+ s->regs[saddr] = (val & IOMMU_AER_MASK) | IOMMU_AER_EN_P0_ARB;
+ break;
+ case IOMMU_AFSR:
+ s->regs[saddr] = (val & IOMMU_AFSR_MASK) | IOMMU_AFSR_RESV;
+ qemu_irq_lower(s->irq);
+ break;
+ case IOMMU_SBCFG0:
+ case IOMMU_SBCFG1:
+ case IOMMU_SBCFG2:
+ case IOMMU_SBCFG3:
+ s->regs[saddr] = val & IOMMU_SBCFG_MASK;
+ break;
+ case IOMMU_ARBEN:
+ // XXX implement SBus probing: fault when reading unmapped
+ // addresses, fault cause and address stored to MMU/IOMMU
+ s->regs[saddr] = (val & IOMMU_ARBEN_MASK) | IOMMU_MID;
+ break;
+ case IOMMU_MASK_ID:
+ s->regs[saddr] |= val & IOMMU_MASK_ID_MASK;
+ break;
+ default:
+ s->regs[saddr] = val;
+ break;
+ }
+}
+
+static const MemoryRegionOps iommu_mem_ops = {
+ .read = iommu_mem_read,
+ .write = iommu_mem_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+static uint32_t iommu_page_get_flags(IOMMUState *s, hwaddr addr)
+{
+ uint32_t ret;
+ hwaddr iopte;
+ hwaddr pa = addr;
+
+ iopte = s->regs[IOMMU_BASE] << 4;
+ addr &= ~s->iostart;
+ iopte += (addr >> (IOMMU_PAGE_SHIFT - 2)) & ~3;
+ ret = ldl_be_phys(iopte);
+ trace_sun4m_iommu_page_get_flags(pa, iopte, ret);
+ return ret;
+}
+
+static hwaddr iommu_translate_pa(hwaddr addr,
+ uint32_t pte)
+{
+ hwaddr pa;
+
+ pa = ((pte & IOPTE_PAGE) << 4) + (addr & ~IOMMU_PAGE_MASK);
+ trace_sun4m_iommu_translate_pa(addr, pa, pte);
+ return pa;
+}
+
+static void iommu_bad_addr(IOMMUState *s, hwaddr addr,
+ int is_write)
+{
+ trace_sun4m_iommu_bad_addr(addr);
+ s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | IOMMU_AFSR_RESV |
+ IOMMU_AFSR_FAV;
+ if (!is_write)
+ s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
+ s->regs[IOMMU_AFAR] = addr;
+ qemu_irq_raise(s->irq);
+}
+
+void sparc_iommu_memory_rw(void *opaque, hwaddr addr,
+ uint8_t *buf, int len, int is_write)
+{
+ int l;
+ uint32_t flags;
+ hwaddr page, phys_addr;
+
+ while (len > 0) {
+ page = addr & IOMMU_PAGE_MASK;
+ l = (page + IOMMU_PAGE_SIZE) - addr;
+ if (l > len)
+ l = len;
+ flags = iommu_page_get_flags(opaque, page);
+ if (!(flags & IOPTE_VALID)) {
+ iommu_bad_addr(opaque, page, is_write);
+ return;
+ }
+ phys_addr = iommu_translate_pa(addr, flags);
+ if (is_write) {
+ if (!(flags & IOPTE_WRITE)) {
+ iommu_bad_addr(opaque, page, is_write);
+ return;
+ }
+ cpu_physical_memory_write(phys_addr, buf, l);
+ } else {
+ cpu_physical_memory_read(phys_addr, buf, l);
+ }
+ len -= l;
+ buf += l;
+ addr += l;
+ }
+}
+
+static const VMStateDescription vmstate_iommu = {
+ .name ="iommu",
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .minimum_version_id_old = 2,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32_ARRAY(regs, IOMMUState, IOMMU_NREGS),
+ VMSTATE_UINT64(iostart, IOMMUState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void iommu_reset(DeviceState *d)
+{
+ IOMMUState *s = container_of(d, IOMMUState, busdev.qdev);
+
+ memset(s->regs, 0, IOMMU_NREGS * 4);
+ s->iostart = 0;
+ s->regs[IOMMU_CTRL] = s->version;
+ s->regs[IOMMU_ARBEN] = IOMMU_MID;
+ s->regs[IOMMU_AFSR] = IOMMU_AFSR_RESV;
+ s->regs[IOMMU_AER] = IOMMU_AER_EN_P0_ARB | IOMMU_AER_EN_P1_ARB;
+ s->regs[IOMMU_MASK_ID] = IOMMU_TS_MASK;
+}
+
+static int iommu_init1(SysBusDevice *dev)
+{
+ IOMMUState *s = FROM_SYSBUS(IOMMUState, dev);
+
+ sysbus_init_irq(dev, &s->irq);
+
+ memory_region_init_io(&s->iomem, &iommu_mem_ops, s, "iommu",
+ IOMMU_NREGS * sizeof(uint32_t));
+ sysbus_init_mmio(dev, &s->iomem);
+
+ return 0;
+}
+
+static Property iommu_properties[] = {
+ DEFINE_PROP_HEX32("version", IOMMUState, version, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void iommu_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = iommu_init1;
+ dc->reset = iommu_reset;
+ dc->vmsd = &vmstate_iommu;
+ dc->props = iommu_properties;
+}
+
+static const TypeInfo iommu_info = {
+ .name = "iommu",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(IOMMUState),
+ .class_init = iommu_class_init,
+};
+
+static void iommu_register_types(void)
+{
+ type_register_static(&iommu_info);
+}
+
+type_init(iommu_register_types)
+++ /dev/null
-/*
- * QEMU ETRAX DMA Controller.
- *
- * Copyright (c) 2008 Edgar E. Iglesias, Axis Communications AB.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include <stdio.h>
-#include <sys/time.h>
-#include "hw/hw.h"
-#include "exec/address-spaces.h"
-#include "qemu-common.h"
-#include "sysemu/sysemu.h"
-
-#include "hw/cris/etraxfs_dma.h"
-
-#define D(x)
-
-#define RW_DATA (0x0 / 4)
-#define RW_SAVED_DATA (0x58 / 4)
-#define RW_SAVED_DATA_BUF (0x5c / 4)
-#define RW_GROUP (0x60 / 4)
-#define RW_GROUP_DOWN (0x7c / 4)
-#define RW_CMD (0x80 / 4)
-#define RW_CFG (0x84 / 4)
-#define RW_STAT (0x88 / 4)
-#define RW_INTR_MASK (0x8c / 4)
-#define RW_ACK_INTR (0x90 / 4)
-#define R_INTR (0x94 / 4)
-#define R_MASKED_INTR (0x98 / 4)
-#define RW_STREAM_CMD (0x9c / 4)
-
-#define DMA_REG_MAX (0x100 / 4)
-
-/* descriptors */
-
-// ------------------------------------------------------------ dma_descr_group
-typedef struct dma_descr_group {
- uint32_t next;
- unsigned eol : 1;
- unsigned tol : 1;
- unsigned bol : 1;
- unsigned : 1;
- unsigned intr : 1;
- unsigned : 2;
- unsigned en : 1;
- unsigned : 7;
- unsigned dis : 1;
- unsigned md : 16;
- struct dma_descr_group *up;
- union {
- struct dma_descr_context *context;
- struct dma_descr_group *group;
- } down;
-} dma_descr_group;
-
-// ---------------------------------------------------------- dma_descr_context
-typedef struct dma_descr_context {
- uint32_t next;
- unsigned eol : 1;
- unsigned : 3;
- unsigned intr : 1;
- unsigned : 1;
- unsigned store_mode : 1;
- unsigned en : 1;
- unsigned : 7;
- unsigned dis : 1;
- unsigned md0 : 16;
- unsigned md1;
- unsigned md2;
- unsigned md3;
- unsigned md4;
- uint32_t saved_data;
- uint32_t saved_data_buf;
-} dma_descr_context;
-
-// ------------------------------------------------------------- dma_descr_data
-typedef struct dma_descr_data {
- uint32_t next;
- uint32_t buf;
- unsigned eol : 1;
- unsigned : 2;
- unsigned out_eop : 1;
- unsigned intr : 1;
- unsigned wait : 1;
- unsigned : 2;
- unsigned : 3;
- unsigned in_eop : 1;
- unsigned : 4;
- unsigned md : 16;
- uint32_t after;
-} dma_descr_data;
-
-/* Constants */
-enum {
- regk_dma_ack_pkt = 0x00000100,
- regk_dma_anytime = 0x00000001,
- regk_dma_array = 0x00000008,
- regk_dma_burst = 0x00000020,
- regk_dma_client = 0x00000002,
- regk_dma_copy_next = 0x00000010,
- regk_dma_copy_up = 0x00000020,
- regk_dma_data_at_eol = 0x00000001,
- regk_dma_dis_c = 0x00000010,
- regk_dma_dis_g = 0x00000020,
- regk_dma_idle = 0x00000001,
- regk_dma_intern = 0x00000004,
- regk_dma_load_c = 0x00000200,
- regk_dma_load_c_n = 0x00000280,
- regk_dma_load_c_next = 0x00000240,
- regk_dma_load_d = 0x00000140,
- regk_dma_load_g = 0x00000300,
- regk_dma_load_g_down = 0x000003c0,
- regk_dma_load_g_next = 0x00000340,
- regk_dma_load_g_up = 0x00000380,
- regk_dma_next_en = 0x00000010,
- regk_dma_next_pkt = 0x00000010,
- regk_dma_no = 0x00000000,
- regk_dma_only_at_wait = 0x00000000,
- regk_dma_restore = 0x00000020,
- regk_dma_rst = 0x00000001,
- regk_dma_running = 0x00000004,
- regk_dma_rw_cfg_default = 0x00000000,
- regk_dma_rw_cmd_default = 0x00000000,
- regk_dma_rw_intr_mask_default = 0x00000000,
- regk_dma_rw_stat_default = 0x00000101,
- regk_dma_rw_stream_cmd_default = 0x00000000,
- regk_dma_save_down = 0x00000020,
- regk_dma_save_up = 0x00000020,
- regk_dma_set_reg = 0x00000050,
- regk_dma_set_w_size1 = 0x00000190,
- regk_dma_set_w_size2 = 0x000001a0,
- regk_dma_set_w_size4 = 0x000001c0,
- regk_dma_stopped = 0x00000002,
- regk_dma_store_c = 0x00000002,
- regk_dma_store_descr = 0x00000000,
- regk_dma_store_g = 0x00000004,
- regk_dma_store_md = 0x00000001,
- regk_dma_sw = 0x00000008,
- regk_dma_update_down = 0x00000020,
- regk_dma_yes = 0x00000001
-};
-
-enum dma_ch_state
-{
- RST = 1,
- STOPPED = 2,
- RUNNING = 4
-};
-
-struct fs_dma_channel
-{
- qemu_irq irq;
- struct etraxfs_dma_client *client;
-
- /* Internal status. */
- int stream_cmd_src;
- enum dma_ch_state state;
-
- unsigned int input : 1;
- unsigned int eol : 1;
-
- struct dma_descr_group current_g;
- struct dma_descr_context current_c;
- struct dma_descr_data current_d;
-
- /* Control registers. */
- uint32_t regs[DMA_REG_MAX];
-};
-
-struct fs_dma_ctrl
-{
- MemoryRegion mmio;
- int nr_channels;
- struct fs_dma_channel *channels;
-
- QEMUBH *bh;
-};
-
-static void DMA_run(void *opaque);
-static int channel_out_run(struct fs_dma_ctrl *ctrl, int c);
-
-static inline uint32_t channel_reg(struct fs_dma_ctrl *ctrl, int c, int reg)
-{
- return ctrl->channels[c].regs[reg];
-}
-
-static inline int channel_stopped(struct fs_dma_ctrl *ctrl, int c)
-{
- return channel_reg(ctrl, c, RW_CFG) & 2;
-}
-
-static inline int channel_en(struct fs_dma_ctrl *ctrl, int c)
-{
- return (channel_reg(ctrl, c, RW_CFG) & 1)
- && ctrl->channels[c].client;
-}
-
-static inline int fs_channel(hwaddr addr)
-{
- /* Every channel has a 0x2000 ctrl register map. */
- return addr >> 13;
-}
-
-#ifdef USE_THIS_DEAD_CODE
-static void channel_load_g(struct fs_dma_ctrl *ctrl, int c)
-{
- hwaddr addr = channel_reg(ctrl, c, RW_GROUP);
-
- /* Load and decode. FIXME: handle endianness. */
- cpu_physical_memory_read (addr,
- (void *) &ctrl->channels[c].current_g,
- sizeof ctrl->channels[c].current_g);
-}
-
-static void dump_c(int ch, struct dma_descr_context *c)
-{
- printf("%s ch=%d\n", __func__, ch);
- printf("next=%x\n", c->next);
- printf("saved_data=%x\n", c->saved_data);
- printf("saved_data_buf=%x\n", c->saved_data_buf);
- printf("eol=%x\n", (uint32_t) c->eol);
-}
-
-static void dump_d(int ch, struct dma_descr_data *d)
-{
- printf("%s ch=%d\n", __func__, ch);
- printf("next=%x\n", d->next);
- printf("buf=%x\n", d->buf);
- printf("after=%x\n", d->after);
- printf("intr=%x\n", (uint32_t) d->intr);
- printf("out_eop=%x\n", (uint32_t) d->out_eop);
- printf("in_eop=%x\n", (uint32_t) d->in_eop);
- printf("eol=%x\n", (uint32_t) d->eol);
-}
-#endif
-
-static void channel_load_c(struct fs_dma_ctrl *ctrl, int c)
-{
- hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
-
- /* Load and decode. FIXME: handle endianness. */
- cpu_physical_memory_read (addr,
- (void *) &ctrl->channels[c].current_c,
- sizeof ctrl->channels[c].current_c);
-
- D(dump_c(c, &ctrl->channels[c].current_c));
- /* I guess this should update the current pos. */
- ctrl->channels[c].regs[RW_SAVED_DATA] =
- (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data;
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
- (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data_buf;
-}
-
-static void channel_load_d(struct fs_dma_ctrl *ctrl, int c)
-{
- hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA);
-
- /* Load and decode. FIXME: handle endianness. */
- D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
- cpu_physical_memory_read (addr,
- (void *) &ctrl->channels[c].current_d,
- sizeof ctrl->channels[c].current_d);
-
- D(dump_d(c, &ctrl->channels[c].current_d));
- ctrl->channels[c].regs[RW_DATA] = addr;
-}
-
-static void channel_store_c(struct fs_dma_ctrl *ctrl, int c)
-{
- hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
-
- /* Encode and store. FIXME: handle endianness. */
- D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
- D(dump_d(c, &ctrl->channels[c].current_d));
- cpu_physical_memory_write (addr,
- (void *) &ctrl->channels[c].current_c,
- sizeof ctrl->channels[c].current_c);
-}
-
-static void channel_store_d(struct fs_dma_ctrl *ctrl, int c)
-{
- hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA);
-
- /* Encode and store. FIXME: handle endianness. */
- D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr));
- cpu_physical_memory_write (addr,
- (void *) &ctrl->channels[c].current_d,
- sizeof ctrl->channels[c].current_d);
-}
-
-static inline void channel_stop(struct fs_dma_ctrl *ctrl, int c)
-{
- /* FIXME: */
-}
-
-static inline void channel_start(struct fs_dma_ctrl *ctrl, int c)
-{
- if (ctrl->channels[c].client)
- {
- ctrl->channels[c].eol = 0;
- ctrl->channels[c].state = RUNNING;
- if (!ctrl->channels[c].input)
- channel_out_run(ctrl, c);
- } else
- printf("WARNING: starting DMA ch %d with no client\n", c);
-
- qemu_bh_schedule_idle(ctrl->bh);
-}
-
-static void channel_continue(struct fs_dma_ctrl *ctrl, int c)
-{
- if (!channel_en(ctrl, c)
- || channel_stopped(ctrl, c)
- || ctrl->channels[c].state != RUNNING
- /* Only reload the current data descriptor if it has eol set. */
- || !ctrl->channels[c].current_d.eol) {
- D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n",
- c, ctrl->channels[c].state,
- channel_stopped(ctrl, c),
- channel_en(ctrl,c),
- ctrl->channels[c].eol));
- D(dump_d(c, &ctrl->channels[c].current_d));
- return;
- }
-
- /* Reload the current descriptor. */
- channel_load_d(ctrl, c);
-
- /* If the current descriptor cleared the eol flag and we had already
- reached eol state, do the continue. */
- if (!ctrl->channels[c].current_d.eol && ctrl->channels[c].eol) {
- D(printf("continue %d ok %x\n", c,
- ctrl->channels[c].current_d.next));
- ctrl->channels[c].regs[RW_SAVED_DATA] =
- (uint32_t)(unsigned long)ctrl->channels[c].current_d.next;
- channel_load_d(ctrl, c);
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
- (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
-
- channel_start(ctrl, c);
- }
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
- (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
-}
-
-static void channel_stream_cmd(struct fs_dma_ctrl *ctrl, int c, uint32_t v)
-{
- unsigned int cmd = v & ((1 << 10) - 1);
-
- D(printf("%s ch=%d cmd=%x\n",
- __func__, c, cmd));
- if (cmd & regk_dma_load_d) {
- channel_load_d(ctrl, c);
- if (cmd & regk_dma_burst)
- channel_start(ctrl, c);
- }
-
- if (cmd & regk_dma_load_c) {
- channel_load_c(ctrl, c);
- }
-}
-
-static void channel_update_irq(struct fs_dma_ctrl *ctrl, int c)
-{
- D(printf("%s %d\n", __func__, c));
- ctrl->channels[c].regs[R_INTR] &=
- ~(ctrl->channels[c].regs[RW_ACK_INTR]);
-
- ctrl->channels[c].regs[R_MASKED_INTR] =
- ctrl->channels[c].regs[R_INTR]
- & ctrl->channels[c].regs[RW_INTR_MASK];
-
- D(printf("%s: chan=%d masked_intr=%x\n", __func__,
- c,
- ctrl->channels[c].regs[R_MASKED_INTR]));
-
- qemu_set_irq(ctrl->channels[c].irq,
- !!ctrl->channels[c].regs[R_MASKED_INTR]);
-}
-
-static int channel_out_run(struct fs_dma_ctrl *ctrl, int c)
-{
- uint32_t len;
- uint32_t saved_data_buf;
- unsigned char buf[2 * 1024];
-
- struct dma_context_metadata meta;
- bool send_context = true;
-
- if (ctrl->channels[c].eol)
- return 0;
-
- do {
- bool out_eop;
- D(printf("ch=%d buf=%x after=%x\n",
- c,
- (uint32_t)ctrl->channels[c].current_d.buf,
- (uint32_t)ctrl->channels[c].current_d.after));
-
- if (send_context) {
- if (ctrl->channels[c].client->client.metadata_push) {
- meta.metadata = ctrl->channels[c].current_d.md;
- ctrl->channels[c].client->client.metadata_push(
- ctrl->channels[c].client->client.opaque,
- &meta);
- }
- send_context = false;
- }
-
- channel_load_d(ctrl, c);
- saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
- len = (uint32_t)(unsigned long)
- ctrl->channels[c].current_d.after;
- len -= saved_data_buf;
-
- if (len > sizeof buf)
- len = sizeof buf;
- cpu_physical_memory_read (saved_data_buf, buf, len);
-
- out_eop = ((saved_data_buf + len) ==
- ctrl->channels[c].current_d.after) &&
- ctrl->channels[c].current_d.out_eop;
-
- D(printf("channel %d pushes %x %u bytes eop=%u\n", c,
- saved_data_buf, len, out_eop));
-
- if (ctrl->channels[c].client->client.push)
- ctrl->channels[c].client->client.push(
- ctrl->channels[c].client->client.opaque,
- buf, len, out_eop);
- else
- printf("WARNING: DMA ch%d dataloss,"
- " no attached client.\n", c);
-
- saved_data_buf += len;
-
- if (saved_data_buf == (uint32_t)(unsigned long)
- ctrl->channels[c].current_d.after) {
- /* Done. Step to next. */
- if (ctrl->channels[c].current_d.out_eop) {
- send_context = true;
- }
- if (ctrl->channels[c].current_d.intr) {
- /* data intr. */
- D(printf("signal intr %d eol=%d\n",
- len, ctrl->channels[c].current_d.eol));
- ctrl->channels[c].regs[R_INTR] |= (1 << 2);
- channel_update_irq(ctrl, c);
- }
- channel_store_d(ctrl, c);
- if (ctrl->channels[c].current_d.eol) {
- D(printf("channel %d EOL\n", c));
- ctrl->channels[c].eol = 1;
-
- /* Mark the context as disabled. */
- ctrl->channels[c].current_c.dis = 1;
- channel_store_c(ctrl, c);
-
- channel_stop(ctrl, c);
- } else {
- ctrl->channels[c].regs[RW_SAVED_DATA] =
- (uint32_t)(unsigned long)ctrl->
- channels[c].current_d.next;
- /* Load new descriptor. */
- channel_load_d(ctrl, c);
- saved_data_buf = (uint32_t)(unsigned long)
- ctrl->channels[c].current_d.buf;
- }
-
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
- saved_data_buf;
- D(dump_d(c, &ctrl->channels[c].current_d));
- }
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
- } while (!ctrl->channels[c].eol);
- return 1;
-}
-
-static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
- unsigned char *buf, int buflen, int eop)
-{
- uint32_t len;
- uint32_t saved_data_buf;
-
- if (ctrl->channels[c].eol == 1)
- return 0;
-
- channel_load_d(ctrl, c);
- saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
- len = (uint32_t)(unsigned long)ctrl->channels[c].current_d.after;
- len -= saved_data_buf;
-
- if (len > buflen)
- len = buflen;
-
- cpu_physical_memory_write (saved_data_buf, buf, len);
- saved_data_buf += len;
-
- if (saved_data_buf ==
- (uint32_t)(unsigned long)ctrl->channels[c].current_d.after
- || eop) {
- uint32_t r_intr = ctrl->channels[c].regs[R_INTR];
-
- D(printf("in dscr end len=%d\n",
- ctrl->channels[c].current_d.after
- - ctrl->channels[c].current_d.buf));
- ctrl->channels[c].current_d.after = saved_data_buf;
-
- /* Done. Step to next. */
- if (ctrl->channels[c].current_d.intr) {
- /* TODO: signal eop to the client. */
- /* data intr. */
- ctrl->channels[c].regs[R_INTR] |= 3;
- }
- if (eop) {
- ctrl->channels[c].current_d.in_eop = 1;
- ctrl->channels[c].regs[R_INTR] |= 8;
- }
- if (r_intr != ctrl->channels[c].regs[R_INTR])
- channel_update_irq(ctrl, c);
-
- channel_store_d(ctrl, c);
- D(dump_d(c, &ctrl->channels[c].current_d));
-
- if (ctrl->channels[c].current_d.eol) {
- D(printf("channel %d EOL\n", c));
- ctrl->channels[c].eol = 1;
-
- /* Mark the context as disabled. */
- ctrl->channels[c].current_c.dis = 1;
- channel_store_c(ctrl, c);
-
- channel_stop(ctrl, c);
- } else {
- ctrl->channels[c].regs[RW_SAVED_DATA] =
- (uint32_t)(unsigned long)ctrl->
- channels[c].current_d.next;
- /* Load new descriptor. */
- channel_load_d(ctrl, c);
- saved_data_buf = (uint32_t)(unsigned long)
- ctrl->channels[c].current_d.buf;
- }
- }
-
- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
- return len;
-}
-
-static inline int channel_in_run(struct fs_dma_ctrl *ctrl, int c)
-{
- if (ctrl->channels[c].client->client.pull) {
- ctrl->channels[c].client->client.pull(
- ctrl->channels[c].client->client.opaque);
- return 1;
- } else
- return 0;
-}
-
-static uint32_t dma_rinvalid (void *opaque, hwaddr addr)
-{
- hw_error("Unsupported short raccess. reg=" TARGET_FMT_plx "\n", addr);
- return 0;
-}
-
-static uint64_t
-dma_read(void *opaque, hwaddr addr, unsigned int size)
-{
- struct fs_dma_ctrl *ctrl = opaque;
- int c;
- uint32_t r = 0;
-
- if (size != 4) {
- dma_rinvalid(opaque, addr);
- }
-
- /* Make addr relative to this channel and bounded to nr regs. */
- c = fs_channel(addr);
- addr &= 0xff;
- addr >>= 2;
- switch (addr)
- {
- case RW_STAT:
- r = ctrl->channels[c].state & 7;
- r |= ctrl->channels[c].eol << 5;
- r |= ctrl->channels[c].stream_cmd_src << 8;
- break;
-
- default:
- r = ctrl->channels[c].regs[addr];
- D(printf ("%s c=%d addr=" TARGET_FMT_plx "\n",
- __func__, c, addr));
- break;
- }
- return r;
-}
-
-static void
-dma_winvalid (void *opaque, hwaddr addr, uint32_t value)
-{
- hw_error("Unsupported short waccess. reg=" TARGET_FMT_plx "\n", addr);
-}
-
-static void
-dma_update_state(struct fs_dma_ctrl *ctrl, int c)
-{
- if (ctrl->channels[c].regs[RW_CFG] & 2)
- ctrl->channels[c].state = STOPPED;
- if (!(ctrl->channels[c].regs[RW_CFG] & 1))
- ctrl->channels[c].state = RST;
-}
-
-static void
-dma_write(void *opaque, hwaddr addr,
- uint64_t val64, unsigned int size)
-{
- struct fs_dma_ctrl *ctrl = opaque;
- uint32_t value = val64;
- int c;
-
- if (size != 4) {
- dma_winvalid(opaque, addr, value);
- }
-
- /* Make addr relative to this channel and bounded to nr regs. */
- c = fs_channel(addr);
- addr &= 0xff;
- addr >>= 2;
- switch (addr)
- {
- case RW_DATA:
- ctrl->channels[c].regs[addr] = value;
- break;
-
- case RW_CFG:
- ctrl->channels[c].regs[addr] = value;
- dma_update_state(ctrl, c);
- break;
- case RW_CMD:
- /* continue. */
- if (value & ~1)
- printf("Invalid store to ch=%d RW_CMD %x\n",
- c, value);
- ctrl->channels[c].regs[addr] = value;
- channel_continue(ctrl, c);
- break;
-
- case RW_SAVED_DATA:
- case RW_SAVED_DATA_BUF:
- case RW_GROUP:
- case RW_GROUP_DOWN:
- ctrl->channels[c].regs[addr] = value;
- break;
-
- case RW_ACK_INTR:
- case RW_INTR_MASK:
- ctrl->channels[c].regs[addr] = value;
- channel_update_irq(ctrl, c);
- if (addr == RW_ACK_INTR)
- ctrl->channels[c].regs[RW_ACK_INTR] = 0;
- break;
-
- case RW_STREAM_CMD:
- if (value & ~1023)
- printf("Invalid store to ch=%d "
- "RW_STREAMCMD %x\n",
- c, value);
- ctrl->channels[c].regs[addr] = value;
- D(printf("stream_cmd ch=%d\n", c));
- channel_stream_cmd(ctrl, c, value);
- break;
-
- default:
- D(printf ("%s c=%d " TARGET_FMT_plx "\n",
- __func__, c, addr));
- break;
- }
-}
-
-static const MemoryRegionOps dma_ops = {
- .read = dma_read,
- .write = dma_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 4
- }
-};
-
-static int etraxfs_dmac_run(void *opaque)
-{
- struct fs_dma_ctrl *ctrl = opaque;
- int i;
- int p = 0;
-
- for (i = 0;
- i < ctrl->nr_channels;
- i++)
- {
- if (ctrl->channels[i].state == RUNNING)
- {
- if (ctrl->channels[i].input) {
- p += channel_in_run(ctrl, i);
- } else {
- p += channel_out_run(ctrl, i);
- }
- }
- }
- return p;
-}
-
-int etraxfs_dmac_input(struct etraxfs_dma_client *client,
- void *buf, int len, int eop)
-{
- return channel_in_process(client->ctrl, client->channel,
- buf, len, eop);
-}
-
-/* Connect an IRQ line with a channel. */
-void etraxfs_dmac_connect(void *opaque, int c, qemu_irq *line, int input)
-{
- struct fs_dma_ctrl *ctrl = opaque;
- ctrl->channels[c].irq = *line;
- ctrl->channels[c].input = input;
-}
-
-void etraxfs_dmac_connect_client(void *opaque, int c,
- struct etraxfs_dma_client *cl)
-{
- struct fs_dma_ctrl *ctrl = opaque;
- cl->ctrl = ctrl;
- cl->channel = c;
- ctrl->channels[c].client = cl;
-}
-
-
-static void DMA_run(void *opaque)
-{
- struct fs_dma_ctrl *etraxfs_dmac = opaque;
- int p = 1;
-
- if (runstate_is_running())
- p = etraxfs_dmac_run(etraxfs_dmac);
-
- if (p)
- qemu_bh_schedule_idle(etraxfs_dmac->bh);
-}
-
-void *etraxfs_dmac_init(hwaddr base, int nr_channels)
-{
- struct fs_dma_ctrl *ctrl = NULL;
-
- ctrl = g_malloc0(sizeof *ctrl);
-
- ctrl->bh = qemu_bh_new(DMA_run, ctrl);
-
- ctrl->nr_channels = nr_channels;
- ctrl->channels = g_malloc0(sizeof ctrl->channels[0] * nr_channels);
-
- memory_region_init_io(&ctrl->mmio, &dma_ops, ctrl, "etraxfs-dma",
- nr_channels * 0x2000);
- memory_region_add_subregion(get_system_memory(), base, &ctrl->mmio);
-
- return ctrl;
-}
+++ /dev/null
-/*
- * TI OMAP DMA gigacell.
- *
- * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org>
- * Copyright (C) 2007-2008 Lauro Ramos Venancio <lauro.venancio@indt.org.br>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "qemu-common.h"
-#include "qemu/timer.h"
-#include "hw/arm/omap.h"
-#include "hw/irq.h"
-#include "hw/arm/soc_dma.h"
-
-struct omap_dma_channel_s {
- /* transfer data */
- int burst[2];
- int pack[2];
- int endian[2];
- int endian_lock[2];
- int translate[2];
- enum omap_dma_port port[2];
- hwaddr addr[2];
- omap_dma_addressing_t mode[2];
- uint32_t elements;
- uint16_t frames;
- int32_t frame_index[2];
- int16_t element_index[2];
- int data_type;
-
- /* transfer type */
- int transparent_copy;
- int constant_fill;
- uint32_t color;
- int prefetch;
-
- /* auto init and linked channel data */
- int end_prog;
- int repeat;
- int auto_init;
- int link_enabled;
- int link_next_ch;
-
- /* interruption data */
- int interrupts;
- int status;
- int cstatus;
-
- /* state data */
- int active;
- int enable;
- int sync;
- int src_sync;
- int pending_request;
- int waiting_end_prog;
- uint16_t cpc;
- int set_update;
-
- /* sync type */
- int fs;
- int bs;
-
- /* compatibility */
- int omap_3_1_compatible_disable;
-
- qemu_irq irq;
- struct omap_dma_channel_s *sibling;
-
- struct omap_dma_reg_set_s {
- hwaddr src, dest;
- int frame;
- int element;
- int pck_element;
- int frame_delta[2];
- int elem_delta[2];
- int frames;
- int elements;
- int pck_elements;
- } active_set;
-
- struct soc_dma_ch_s *dma;
-
- /* unused parameters */
- int write_mode;
- int priority;
- int interleave_disabled;
- int type;
- int suspend;
- int buf_disable;
-};
-
-struct omap_dma_s {
- struct soc_dma_s *dma;
- MemoryRegion iomem;
-
- struct omap_mpu_state_s *mpu;
- omap_clk clk;
- qemu_irq irq[4];
- void (*intr_update)(struct omap_dma_s *s);
- enum omap_dma_model model;
- int omap_3_1_mapping_disabled;
-
- uint32_t gcr;
- uint32_t ocp;
- uint32_t caps[5];
- uint32_t irqen[4];
- uint32_t irqstat[4];
-
- int chans;
- struct omap_dma_channel_s ch[32];
- struct omap_dma_lcd_channel_s lcd_ch;
-};
-
-/* Interrupts */
-#define TIMEOUT_INTR (1 << 0)
-#define EVENT_DROP_INTR (1 << 1)
-#define HALF_FRAME_INTR (1 << 2)
-#define END_FRAME_INTR (1 << 3)
-#define LAST_FRAME_INTR (1 << 4)
-#define END_BLOCK_INTR (1 << 5)
-#define SYNC (1 << 6)
-#define END_PKT_INTR (1 << 7)
-#define TRANS_ERR_INTR (1 << 8)
-#define MISALIGN_INTR (1 << 11)
-
-static inline void omap_dma_interrupts_update(struct omap_dma_s *s)
-{
- return s->intr_update(s);
-}
-
-static void omap_dma_channel_load(struct omap_dma_channel_s *ch)
-{
- struct omap_dma_reg_set_s *a = &ch->active_set;
- int i, normal;
- int omap_3_1 = !ch->omap_3_1_compatible_disable;
-
- /*
- * TODO: verify address ranges and alignment
- * TODO: port endianness
- */
-
- a->src = ch->addr[0];
- a->dest = ch->addr[1];
- a->frames = ch->frames;
- a->elements = ch->elements;
- a->pck_elements = ch->frame_index[!ch->src_sync];
- a->frame = 0;
- a->element = 0;
- a->pck_element = 0;
-
- if (unlikely(!ch->elements || !ch->frames)) {
- printf("%s: bad DMA request\n", __FUNCTION__);
- return;
- }
-
- for (i = 0; i < 2; i ++)
- switch (ch->mode[i]) {
- case constant:
- a->elem_delta[i] = 0;
- a->frame_delta[i] = 0;
- break;
- case post_incremented:
- a->elem_delta[i] = ch->data_type;
- a->frame_delta[i] = 0;
- break;
- case single_index:
- a->elem_delta[i] = ch->data_type +
- ch->element_index[omap_3_1 ? 0 : i] - 1;
- a->frame_delta[i] = 0;
- break;
- case double_index:
- a->elem_delta[i] = ch->data_type +
- ch->element_index[omap_3_1 ? 0 : i] - 1;
- a->frame_delta[i] = ch->frame_index[omap_3_1 ? 0 : i] -
- ch->element_index[omap_3_1 ? 0 : i];
- break;
- default:
- break;
- }
-
- normal = !ch->transparent_copy && !ch->constant_fill &&
- /* FIFO is big-endian so either (ch->endian[n] == 1) OR
- * (ch->endian_lock[n] == 1) mean no endianism conversion. */
- (ch->endian[0] | ch->endian_lock[0]) ==
- (ch->endian[1] | ch->endian_lock[1]);
- for (i = 0; i < 2; i ++) {
- /* TODO: for a->frame_delta[i] > 0 still use the fast path, just
- * limit min_elems in omap_dma_transfer_setup to the nearest frame
- * end. */
- if (!a->elem_delta[i] && normal &&
- (a->frames == 1 || !a->frame_delta[i]))
- ch->dma->type[i] = soc_dma_access_const;
- else if (a->elem_delta[i] == ch->data_type && normal &&
- (a->frames == 1 || !a->frame_delta[i]))
- ch->dma->type[i] = soc_dma_access_linear;
- else
- ch->dma->type[i] = soc_dma_access_other;
-
- ch->dma->vaddr[i] = ch->addr[i];
- }
- soc_dma_ch_update(ch->dma);
-}
-
-static void omap_dma_activate_channel(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch)
-{
- if (!ch->active) {
- if (ch->set_update) {
- /* It's not clear when the active set is supposed to be
- * loaded from registers. We're already loading it when the
- * channel is enabled, and for some guests this is not enough
- * but that may be also because of a race condition (no
- * delays in qemu) in the guest code, which we're just
- * working around here. */
- omap_dma_channel_load(ch);
- ch->set_update = 0;
- }
-
- ch->active = 1;
- soc_dma_set_request(ch->dma, 1);
- if (ch->sync)
- ch->status |= SYNC;
- }
-}
-
-static void omap_dma_deactivate_channel(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch)
-{
- /* Update cpc */
- ch->cpc = ch->active_set.dest & 0xffff;
-
- if (ch->pending_request && !ch->waiting_end_prog && ch->enable) {
- /* Don't deactivate the channel */
- ch->pending_request = 0;
- return;
- }
-
- /* Don't deactive the channel if it is synchronized and the DMA request is
- active */
- if (ch->sync && ch->enable && (s->dma->drqbmp & (1 << ch->sync)))
- return;
-
- if (ch->active) {
- ch->active = 0;
- ch->status &= ~SYNC;
- soc_dma_set_request(ch->dma, 0);
- }
-}
-
-static void omap_dma_enable_channel(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch)
-{
- if (!ch->enable) {
- ch->enable = 1;
- ch->waiting_end_prog = 0;
- omap_dma_channel_load(ch);
- /* TODO: theoretically if ch->sync && ch->prefetch &&
- * !s->dma->drqbmp[ch->sync], we should also activate and fetch
- * from source and then stall until signalled. */
- if ((!ch->sync) || (s->dma->drqbmp & (1 << ch->sync)))
- omap_dma_activate_channel(s, ch);
- }
-}
-
-static void omap_dma_disable_channel(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch)
-{
- if (ch->enable) {
- ch->enable = 0;
- /* Discard any pending request */
- ch->pending_request = 0;
- omap_dma_deactivate_channel(s, ch);
- }
-}
-
-static void omap_dma_channel_end_prog(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch)
-{
- if (ch->waiting_end_prog) {
- ch->waiting_end_prog = 0;
- if (!ch->sync || ch->pending_request) {
- ch->pending_request = 0;
- omap_dma_activate_channel(s, ch);
- }
- }
-}
-
-static void omap_dma_interrupts_3_1_update(struct omap_dma_s *s)
-{
- struct omap_dma_channel_s *ch = s->ch;
-
- /* First three interrupts are shared between two channels each. */
- if (ch[0].status | ch[6].status)
- qemu_irq_raise(ch[0].irq);
- if (ch[1].status | ch[7].status)
- qemu_irq_raise(ch[1].irq);
- if (ch[2].status | ch[8].status)
- qemu_irq_raise(ch[2].irq);
- if (ch[3].status)
- qemu_irq_raise(ch[3].irq);
- if (ch[4].status)
- qemu_irq_raise(ch[4].irq);
- if (ch[5].status)
- qemu_irq_raise(ch[5].irq);
-}
-
-static void omap_dma_interrupts_3_2_update(struct omap_dma_s *s)
-{
- struct omap_dma_channel_s *ch = s->ch;
- int i;
-
- for (i = s->chans; i; ch ++, i --)
- if (ch->status)
- qemu_irq_raise(ch->irq);
-}
-
-static void omap_dma_enable_3_1_mapping(struct omap_dma_s *s)
-{
- s->omap_3_1_mapping_disabled = 0;
- s->chans = 9;
- s->intr_update = omap_dma_interrupts_3_1_update;
-}
-
-static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s)
-{
- s->omap_3_1_mapping_disabled = 1;
- s->chans = 16;
- s->intr_update = omap_dma_interrupts_3_2_update;
-}
-
-static void omap_dma_process_request(struct omap_dma_s *s, int request)
-{
- int channel;
- int drop_event = 0;
- struct omap_dma_channel_s *ch = s->ch;
-
- for (channel = 0; channel < s->chans; channel ++, ch ++) {
- if (ch->enable && ch->sync == request) {
- if (!ch->active)
- omap_dma_activate_channel(s, ch);
- else if (!ch->pending_request)
- ch->pending_request = 1;
- else {
- /* Request collision */
- /* Second request received while processing other request */
- ch->status |= EVENT_DROP_INTR;
- drop_event = 1;
- }
- }
- }
-
- if (drop_event)
- omap_dma_interrupts_update(s);
-}
-
-static void omap_dma_transfer_generic(struct soc_dma_ch_s *dma)
-{
- uint8_t value[4];
- struct omap_dma_channel_s *ch = dma->opaque;
- struct omap_dma_reg_set_s *a = &ch->active_set;
- int bytes = dma->bytes;
-#ifdef MULTI_REQ
- uint16_t status = ch->status;
-#endif
-
- do {
- /* Transfer a single element */
- /* FIXME: check the endianness */
- if (!ch->constant_fill)
- cpu_physical_memory_read(a->src, value, ch->data_type);
- else
- *(uint32_t *) value = ch->color;
-
- if (!ch->transparent_copy || *(uint32_t *) value != ch->color)
- cpu_physical_memory_write(a->dest, value, ch->data_type);
-
- a->src += a->elem_delta[0];
- a->dest += a->elem_delta[1];
- a->element ++;
-
-#ifndef MULTI_REQ
- if (a->element == a->elements) {
- /* End of Frame */
- a->element = 0;
- a->src += a->frame_delta[0];
- a->dest += a->frame_delta[1];
- a->frame ++;
-
- /* If the channel is async, update cpc */
- if (!ch->sync)
- ch->cpc = a->dest & 0xffff;
- }
- } while ((bytes -= ch->data_type));
-#else
- /* If the channel is element synchronized, deactivate it */
- if (ch->sync && !ch->fs && !ch->bs)
- omap_dma_deactivate_channel(s, ch);
-
- /* If it is the last frame, set the LAST_FRAME interrupt */
- if (a->element == 1 && a->frame == a->frames - 1)
- if (ch->interrupts & LAST_FRAME_INTR)
- ch->status |= LAST_FRAME_INTR;
-
- /* If the half of the frame was reached, set the HALF_FRAME
- interrupt */
- if (a->element == (a->elements >> 1))
- if (ch->interrupts & HALF_FRAME_INTR)
- ch->status |= HALF_FRAME_INTR;
-
- if (ch->fs && ch->bs) {
- a->pck_element ++;
- /* Check if a full packet has beed transferred. */
- if (a->pck_element == a->pck_elements) {
- a->pck_element = 0;
-
- /* Set the END_PKT interrupt */
- if ((ch->interrupts & END_PKT_INTR) && !ch->src_sync)
- ch->status |= END_PKT_INTR;
-
- /* If the channel is packet-synchronized, deactivate it */
- if (ch->sync)
- omap_dma_deactivate_channel(s, ch);
- }
- }
-
- if (a->element == a->elements) {
- /* End of Frame */
- a->element = 0;
- a->src += a->frame_delta[0];
- a->dest += a->frame_delta[1];
- a->frame ++;
-
- /* If the channel is frame synchronized, deactivate it */
- if (ch->sync && ch->fs && !ch->bs)
- omap_dma_deactivate_channel(s, ch);
-
- /* If the channel is async, update cpc */
- if (!ch->sync)
- ch->cpc = a->dest & 0xffff;
-
- /* Set the END_FRAME interrupt */
- if (ch->interrupts & END_FRAME_INTR)
- ch->status |= END_FRAME_INTR;
-
- if (a->frame == a->frames) {
- /* End of Block */
- /* Disable the channel */
-
- if (ch->omap_3_1_compatible_disable) {
- omap_dma_disable_channel(s, ch);
- if (ch->link_enabled)
- omap_dma_enable_channel(s,
- &s->ch[ch->link_next_ch]);
- } else {
- if (!ch->auto_init)
- omap_dma_disable_channel(s, ch);
- else if (ch->repeat || ch->end_prog)
- omap_dma_channel_load(ch);
- else {
- ch->waiting_end_prog = 1;
- omap_dma_deactivate_channel(s, ch);
- }
- }
-
- if (ch->interrupts & END_BLOCK_INTR)
- ch->status |= END_BLOCK_INTR;
- }
- }
- } while (status == ch->status && ch->active);
-
- omap_dma_interrupts_update(s);
-#endif
-}
-
-enum {
- omap_dma_intr_element_sync,
- omap_dma_intr_last_frame,
- omap_dma_intr_half_frame,
- omap_dma_intr_frame,
- omap_dma_intr_frame_sync,
- omap_dma_intr_packet,
- omap_dma_intr_packet_sync,
- omap_dma_intr_block,
- __omap_dma_intr_last,
-};
-
-static void omap_dma_transfer_setup(struct soc_dma_ch_s *dma)
-{
- struct omap_dma_port_if_s *src_p, *dest_p;
- struct omap_dma_reg_set_s *a;
- struct omap_dma_channel_s *ch = dma->opaque;
- struct omap_dma_s *s = dma->dma->opaque;
- int frames, min_elems, elements[__omap_dma_intr_last];
-
- a = &ch->active_set;
-
- src_p = &s->mpu->port[ch->port[0]];
- dest_p = &s->mpu->port[ch->port[1]];
- if ((!ch->constant_fill && !src_p->addr_valid(s->mpu, a->src)) ||
- (!dest_p->addr_valid(s->mpu, a->dest))) {
-#if 0
- /* Bus time-out */
- if (ch->interrupts & TIMEOUT_INTR)
- ch->status |= TIMEOUT_INTR;
- omap_dma_deactivate_channel(s, ch);
- continue;
-#endif
- printf("%s: Bus time-out in DMA%i operation\n",
- __FUNCTION__, dma->num);
- }
-
- min_elems = INT_MAX;
-
- /* Check all the conditions that terminate the transfer starting
- * with those that can occur the soonest. */
-#define INTR_CHECK(cond, id, nelements) \
- if (cond) { \
- elements[id] = nelements; \
- if (elements[id] < min_elems) \
- min_elems = elements[id]; \
- } else \
- elements[id] = INT_MAX;
-
- /* Elements */
- INTR_CHECK(
- ch->sync && !ch->fs && !ch->bs,
- omap_dma_intr_element_sync,
- 1)
-
- /* Frames */
- /* TODO: for transfers where entire frames can be read and written
- * using memcpy() but a->frame_delta is non-zero, try to still do
- * transfers using soc_dma but limit min_elems to a->elements - ...
- * See also the TODO in omap_dma_channel_load. */
- INTR_CHECK(
- (ch->interrupts & LAST_FRAME_INTR) &&
- ((a->frame < a->frames - 1) || !a->element),
- omap_dma_intr_last_frame,
- (a->frames - a->frame - 2) * a->elements +
- (a->elements - a->element + 1))
- INTR_CHECK(
- ch->interrupts & HALF_FRAME_INTR,
- omap_dma_intr_half_frame,
- (a->elements >> 1) +
- (a->element >= (a->elements >> 1) ? a->elements : 0) -
- a->element)
- INTR_CHECK(
- ch->sync && ch->fs && (ch->interrupts & END_FRAME_INTR),
- omap_dma_intr_frame,
- a->elements - a->element)
- INTR_CHECK(
- ch->sync && ch->fs && !ch->bs,
- omap_dma_intr_frame_sync,
- a->elements - a->element)
-
- /* Packets */
- INTR_CHECK(
- ch->fs && ch->bs &&
- (ch->interrupts & END_PKT_INTR) && !ch->src_sync,
- omap_dma_intr_packet,
- a->pck_elements - a->pck_element)
- INTR_CHECK(
- ch->fs && ch->bs && ch->sync,
- omap_dma_intr_packet_sync,
- a->pck_elements - a->pck_element)
-
- /* Blocks */
- INTR_CHECK(
- 1,
- omap_dma_intr_block,
- (a->frames - a->frame - 1) * a->elements +
- (a->elements - a->element))
-
- dma->bytes = min_elems * ch->data_type;
-
- /* Set appropriate interrupts and/or deactivate channels */
-
-#ifdef MULTI_REQ
- /* TODO: should all of this only be done if dma->update, and otherwise
- * inside omap_dma_transfer_generic below - check what's faster. */
- if (dma->update) {
-#endif
-
- /* If the channel is element synchronized, deactivate it */
- if (min_elems == elements[omap_dma_intr_element_sync])
- omap_dma_deactivate_channel(s, ch);
-
- /* If it is the last frame, set the LAST_FRAME interrupt */
- if (min_elems == elements[omap_dma_intr_last_frame])
- ch->status |= LAST_FRAME_INTR;
-
- /* If exactly half of the frame was reached, set the HALF_FRAME
- interrupt */
- if (min_elems == elements[omap_dma_intr_half_frame])
- ch->status |= HALF_FRAME_INTR;
-
- /* If a full packet has been transferred, set the END_PKT interrupt */
- if (min_elems == elements[omap_dma_intr_packet])
- ch->status |= END_PKT_INTR;
-
- /* If the channel is packet-synchronized, deactivate it */
- if (min_elems == elements[omap_dma_intr_packet_sync])
- omap_dma_deactivate_channel(s, ch);
-
- /* If the channel is frame synchronized, deactivate it */
- if (min_elems == elements[omap_dma_intr_frame_sync])
- omap_dma_deactivate_channel(s, ch);
-
- /* Set the END_FRAME interrupt */
- if (min_elems == elements[omap_dma_intr_frame])
- ch->status |= END_FRAME_INTR;
-
- if (min_elems == elements[omap_dma_intr_block]) {
- /* End of Block */
- /* Disable the channel */
-
- if (ch->omap_3_1_compatible_disable) {
- omap_dma_disable_channel(s, ch);
- if (ch->link_enabled)
- omap_dma_enable_channel(s, &s->ch[ch->link_next_ch]);
- } else {
- if (!ch->auto_init)
- omap_dma_disable_channel(s, ch);
- else if (ch->repeat || ch->end_prog)
- omap_dma_channel_load(ch);
- else {
- ch->waiting_end_prog = 1;
- omap_dma_deactivate_channel(s, ch);
- }
- }
-
- if (ch->interrupts & END_BLOCK_INTR)
- ch->status |= END_BLOCK_INTR;
- }
-
- /* Update packet number */
- if (ch->fs && ch->bs) {
- a->pck_element += min_elems;
- a->pck_element %= a->pck_elements;
- }
-
- /* TODO: check if we really need to update anything here or perhaps we
- * can skip part of this. */
-#ifndef MULTI_REQ
- if (dma->update) {
-#endif
- a->element += min_elems;
-
- frames = a->element / a->elements;
- a->element = a->element % a->elements;
- a->frame += frames;
- a->src += min_elems * a->elem_delta[0] + frames * a->frame_delta[0];
- a->dest += min_elems * a->elem_delta[1] + frames * a->frame_delta[1];
-
- /* If the channel is async, update cpc */
- if (!ch->sync && frames)
- ch->cpc = a->dest & 0xffff;
-
- /* TODO: if the destination port is IMIF or EMIFF, set the dirty
- * bits on it. */
-#ifndef MULTI_REQ
- }
-#else
- }
-#endif
-
- omap_dma_interrupts_update(s);
-}
-
-void omap_dma_reset(struct soc_dma_s *dma)
-{
- int i;
- struct omap_dma_s *s = dma->opaque;
-
- soc_dma_reset(s->dma);
- if (s->model < omap_dma_4)
- s->gcr = 0x0004;
- else
- s->gcr = 0x00010010;
- s->ocp = 0x00000000;
- memset(&s->irqstat, 0, sizeof(s->irqstat));
- memset(&s->irqen, 0, sizeof(s->irqen));
- s->lcd_ch.src = emiff;
- s->lcd_ch.condition = 0;
- s->lcd_ch.interrupts = 0;
- s->lcd_ch.dual = 0;
- if (s->model < omap_dma_4)
- omap_dma_enable_3_1_mapping(s);
- for (i = 0; i < s->chans; i ++) {
- s->ch[i].suspend = 0;
- s->ch[i].prefetch = 0;
- s->ch[i].buf_disable = 0;
- s->ch[i].src_sync = 0;
- memset(&s->ch[i].burst, 0, sizeof(s->ch[i].burst));
- memset(&s->ch[i].port, 0, sizeof(s->ch[i].port));
- memset(&s->ch[i].mode, 0, sizeof(s->ch[i].mode));
- memset(&s->ch[i].frame_index, 0, sizeof(s->ch[i].frame_index));
- memset(&s->ch[i].element_index, 0, sizeof(s->ch[i].element_index));
- memset(&s->ch[i].endian, 0, sizeof(s->ch[i].endian));
- memset(&s->ch[i].endian_lock, 0, sizeof(s->ch[i].endian_lock));
- memset(&s->ch[i].translate, 0, sizeof(s->ch[i].translate));
- s->ch[i].write_mode = 0;
- s->ch[i].data_type = 0;
- s->ch[i].transparent_copy = 0;
- s->ch[i].constant_fill = 0;
- s->ch[i].color = 0x00000000;
- s->ch[i].end_prog = 0;
- s->ch[i].repeat = 0;
- s->ch[i].auto_init = 0;
- s->ch[i].link_enabled = 0;
- if (s->model < omap_dma_4)
- s->ch[i].interrupts = 0x0003;
- else
- s->ch[i].interrupts = 0x0000;
- s->ch[i].status = 0;
- s->ch[i].cstatus = 0;
- s->ch[i].active = 0;
- s->ch[i].enable = 0;
- s->ch[i].sync = 0;
- s->ch[i].pending_request = 0;
- s->ch[i].waiting_end_prog = 0;
- s->ch[i].cpc = 0x0000;
- s->ch[i].fs = 0;
- s->ch[i].bs = 0;
- s->ch[i].omap_3_1_compatible_disable = 0;
- memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set));
- s->ch[i].priority = 0;
- s->ch[i].interleave_disabled = 0;
- s->ch[i].type = 0;
- }
-}
-
-static int omap_dma_ch_reg_read(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch, int reg, uint16_t *value)
-{
- switch (reg) {
- case 0x00: /* SYS_DMA_CSDP_CH0 */
- *value = (ch->burst[1] << 14) |
- (ch->pack[1] << 13) |
- (ch->port[1] << 9) |
- (ch->burst[0] << 7) |
- (ch->pack[0] << 6) |
- (ch->port[0] << 2) |
- (ch->data_type >> 1);
- break;
-
- case 0x02: /* SYS_DMA_CCR_CH0 */
- if (s->model <= omap_dma_3_1)
- *value = 0 << 10; /* FIFO_FLUSH reads as 0 */
- else
- *value = ch->omap_3_1_compatible_disable << 10;
- *value |= (ch->mode[1] << 14) |
- (ch->mode[0] << 12) |
- (ch->end_prog << 11) |
- (ch->repeat << 9) |
- (ch->auto_init << 8) |
- (ch->enable << 7) |
- (ch->priority << 6) |
- (ch->fs << 5) | ch->sync;
- break;
-
- case 0x04: /* SYS_DMA_CICR_CH0 */
- *value = ch->interrupts;
- break;
-
- case 0x06: /* SYS_DMA_CSR_CH0 */
- *value = ch->status;
- ch->status &= SYNC;
- if (!ch->omap_3_1_compatible_disable && ch->sibling) {
- *value |= (ch->sibling->status & 0x3f) << 6;
- ch->sibling->status &= SYNC;
- }
- qemu_irq_lower(ch->irq);
- break;
-
- case 0x08: /* SYS_DMA_CSSA_L_CH0 */
- *value = ch->addr[0] & 0x0000ffff;
- break;
-
- case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
- *value = ch->addr[0] >> 16;
- break;
-
- case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
- *value = ch->addr[1] & 0x0000ffff;
- break;
-
- case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
- *value = ch->addr[1] >> 16;
- break;
-
- case 0x10: /* SYS_DMA_CEN_CH0 */
- *value = ch->elements;
- break;
-
- case 0x12: /* SYS_DMA_CFN_CH0 */
- *value = ch->frames;
- break;
-
- case 0x14: /* SYS_DMA_CFI_CH0 */
- *value = ch->frame_index[0];
- break;
-
- case 0x16: /* SYS_DMA_CEI_CH0 */
- *value = ch->element_index[0];
- break;
-
- case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
- if (ch->omap_3_1_compatible_disable)
- *value = ch->active_set.src & 0xffff; /* CSAC */
- else
- *value = ch->cpc;
- break;
-
- case 0x1a: /* DMA_CDAC */
- *value = ch->active_set.dest & 0xffff; /* CDAC */
- break;
-
- case 0x1c: /* DMA_CDEI */
- *value = ch->element_index[1];
- break;
-
- case 0x1e: /* DMA_CDFI */
- *value = ch->frame_index[1];
- break;
-
- case 0x20: /* DMA_COLOR_L */
- *value = ch->color & 0xffff;
- break;
-
- case 0x22: /* DMA_COLOR_U */
- *value = ch->color >> 16;
- break;
-
- case 0x24: /* DMA_CCR2 */
- *value = (ch->bs << 2) |
- (ch->transparent_copy << 1) |
- ch->constant_fill;
- break;
-
- case 0x28: /* DMA_CLNK_CTRL */
- *value = (ch->link_enabled << 15) |
- (ch->link_next_ch & 0xf);
- break;
-
- case 0x2a: /* DMA_LCH_CTRL */
- *value = (ch->interleave_disabled << 15) |
- ch->type;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_ch_reg_write(struct omap_dma_s *s,
- struct omap_dma_channel_s *ch, int reg, uint16_t value)
-{
- switch (reg) {
- case 0x00: /* SYS_DMA_CSDP_CH0 */
- ch->burst[1] = (value & 0xc000) >> 14;
- ch->pack[1] = (value & 0x2000) >> 13;
- ch->port[1] = (enum omap_dma_port) ((value & 0x1e00) >> 9);
- ch->burst[0] = (value & 0x0180) >> 7;
- ch->pack[0] = (value & 0x0040) >> 6;
- ch->port[0] = (enum omap_dma_port) ((value & 0x003c) >> 2);
- ch->data_type = 1 << (value & 3);
- if (ch->port[0] >= __omap_dma_port_last)
- printf("%s: invalid DMA port %i\n", __FUNCTION__,
- ch->port[0]);
- if (ch->port[1] >= __omap_dma_port_last)
- printf("%s: invalid DMA port %i\n", __FUNCTION__,
- ch->port[1]);
- if ((value & 3) == 3)
- printf("%s: bad data_type for DMA channel\n", __FUNCTION__);
- break;
-
- case 0x02: /* SYS_DMA_CCR_CH0 */
- ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
- ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
- ch->end_prog = (value & 0x0800) >> 11;
- if (s->model >= omap_dma_3_2)
- ch->omap_3_1_compatible_disable = (value >> 10) & 0x1;
- ch->repeat = (value & 0x0200) >> 9;
- ch->auto_init = (value & 0x0100) >> 8;
- ch->priority = (value & 0x0040) >> 6;
- ch->fs = (value & 0x0020) >> 5;
- ch->sync = value & 0x001f;
-
- if (value & 0x0080)
- omap_dma_enable_channel(s, ch);
- else
- omap_dma_disable_channel(s, ch);
-
- if (ch->end_prog)
- omap_dma_channel_end_prog(s, ch);
-
- break;
-
- case 0x04: /* SYS_DMA_CICR_CH0 */
- ch->interrupts = value & 0x3f;
- break;
-
- case 0x06: /* SYS_DMA_CSR_CH0 */
- OMAP_RO_REG((hwaddr) reg);
- break;
-
- case 0x08: /* SYS_DMA_CSSA_L_CH0 */
- ch->addr[0] &= 0xffff0000;
- ch->addr[0] |= value;
- break;
-
- case 0x0a: /* SYS_DMA_CSSA_U_CH0 */
- ch->addr[0] &= 0x0000ffff;
- ch->addr[0] |= (uint32_t) value << 16;
- break;
-
- case 0x0c: /* SYS_DMA_CDSA_L_CH0 */
- ch->addr[1] &= 0xffff0000;
- ch->addr[1] |= value;
- break;
-
- case 0x0e: /* SYS_DMA_CDSA_U_CH0 */
- ch->addr[1] &= 0x0000ffff;
- ch->addr[1] |= (uint32_t) value << 16;
- break;
-
- case 0x10: /* SYS_DMA_CEN_CH0 */
- ch->elements = value;
- break;
-
- case 0x12: /* SYS_DMA_CFN_CH0 */
- ch->frames = value;
- break;
-
- case 0x14: /* SYS_DMA_CFI_CH0 */
- ch->frame_index[0] = (int16_t) value;
- break;
-
- case 0x16: /* SYS_DMA_CEI_CH0 */
- ch->element_index[0] = (int16_t) value;
- break;
-
- case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */
- OMAP_RO_REG((hwaddr) reg);
- break;
-
- case 0x1c: /* DMA_CDEI */
- ch->element_index[1] = (int16_t) value;
- break;
-
- case 0x1e: /* DMA_CDFI */
- ch->frame_index[1] = (int16_t) value;
- break;
-
- case 0x20: /* DMA_COLOR_L */
- ch->color &= 0xffff0000;
- ch->color |= value;
- break;
-
- case 0x22: /* DMA_COLOR_U */
- ch->color &= 0xffff;
- ch->color |= value << 16;
- break;
-
- case 0x24: /* DMA_CCR2 */
- ch->bs = (value >> 2) & 0x1;
- ch->transparent_copy = (value >> 1) & 0x1;
- ch->constant_fill = value & 0x1;
- break;
-
- case 0x28: /* DMA_CLNK_CTRL */
- ch->link_enabled = (value >> 15) & 0x1;
- if (value & (1 << 14)) { /* Stop_Lnk */
- ch->link_enabled = 0;
- omap_dma_disable_channel(s, ch);
- }
- ch->link_next_ch = value & 0x1f;
- break;
-
- case 0x2a: /* DMA_LCH_CTRL */
- ch->interleave_disabled = (value >> 15) & 0x1;
- ch->type = value & 0xf;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_3_2_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
- uint16_t value)
-{
- switch (offset) {
- case 0xbc0: /* DMA_LCD_CSDP */
- s->brust_f2 = (value >> 14) & 0x3;
- s->pack_f2 = (value >> 13) & 0x1;
- s->data_type_f2 = (1 << ((value >> 11) & 0x3));
- s->brust_f1 = (value >> 7) & 0x3;
- s->pack_f1 = (value >> 6) & 0x1;
- s->data_type_f1 = (1 << ((value >> 0) & 0x3));
- break;
-
- case 0xbc2: /* DMA_LCD_CCR */
- s->mode_f2 = (value >> 14) & 0x3;
- s->mode_f1 = (value >> 12) & 0x3;
- s->end_prog = (value >> 11) & 0x1;
- s->omap_3_1_compatible_disable = (value >> 10) & 0x1;
- s->repeat = (value >> 9) & 0x1;
- s->auto_init = (value >> 8) & 0x1;
- s->running = (value >> 7) & 0x1;
- s->priority = (value >> 6) & 0x1;
- s->bs = (value >> 4) & 0x1;
- break;
-
- case 0xbc4: /* DMA_LCD_CTRL */
- s->dst = (value >> 8) & 0x1;
- s->src = ((value >> 6) & 0x3) << 1;
- s->condition = 0;
- /* Assume no bus errors and thus no BUS_ERROR irq bits. */
- s->interrupts = (value >> 1) & 1;
- s->dual = value & 1;
- break;
-
- case 0xbc8: /* TOP_B1_L */
- s->src_f1_top &= 0xffff0000;
- s->src_f1_top |= 0x0000ffff & value;
- break;
-
- case 0xbca: /* TOP_B1_U */
- s->src_f1_top &= 0x0000ffff;
- s->src_f1_top |= value << 16;
- break;
-
- case 0xbcc: /* BOT_B1_L */
- s->src_f1_bottom &= 0xffff0000;
- s->src_f1_bottom |= 0x0000ffff & value;
- break;
-
- case 0xbce: /* BOT_B1_U */
- s->src_f1_bottom &= 0x0000ffff;
- s->src_f1_bottom |= (uint32_t) value << 16;
- break;
-
- case 0xbd0: /* TOP_B2_L */
- s->src_f2_top &= 0xffff0000;
- s->src_f2_top |= 0x0000ffff & value;
- break;
-
- case 0xbd2: /* TOP_B2_U */
- s->src_f2_top &= 0x0000ffff;
- s->src_f2_top |= (uint32_t) value << 16;
- break;
-
- case 0xbd4: /* BOT_B2_L */
- s->src_f2_bottom &= 0xffff0000;
- s->src_f2_bottom |= 0x0000ffff & value;
- break;
-
- case 0xbd6: /* BOT_B2_U */
- s->src_f2_bottom &= 0x0000ffff;
- s->src_f2_bottom |= (uint32_t) value << 16;
- break;
-
- case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
- s->element_index_f1 = value;
- break;
-
- case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
- s->frame_index_f1 &= 0xffff0000;
- s->frame_index_f1 |= 0x0000ffff & value;
- break;
-
- case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
- s->frame_index_f1 &= 0x0000ffff;
- s->frame_index_f1 |= (uint32_t) value << 16;
- break;
-
- case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
- s->element_index_f2 = value;
- break;
-
- case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
- s->frame_index_f2 &= 0xffff0000;
- s->frame_index_f2 |= 0x0000ffff & value;
- break;
-
- case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
- s->frame_index_f2 &= 0x0000ffff;
- s->frame_index_f2 |= (uint32_t) value << 16;
- break;
-
- case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
- s->elements_f1 = value;
- break;
-
- case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
- s->frames_f1 = value;
- break;
-
- case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
- s->elements_f2 = value;
- break;
-
- case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
- s->frames_f2 = value;
- break;
-
- case 0xbea: /* DMA_LCD_LCH_CTRL */
- s->lch_type = value & 0xf;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_3_2_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
- uint16_t *ret)
-{
- switch (offset) {
- case 0xbc0: /* DMA_LCD_CSDP */
- *ret = (s->brust_f2 << 14) |
- (s->pack_f2 << 13) |
- ((s->data_type_f2 >> 1) << 11) |
- (s->brust_f1 << 7) |
- (s->pack_f1 << 6) |
- ((s->data_type_f1 >> 1) << 0);
- break;
-
- case 0xbc2: /* DMA_LCD_CCR */
- *ret = (s->mode_f2 << 14) |
- (s->mode_f1 << 12) |
- (s->end_prog << 11) |
- (s->omap_3_1_compatible_disable << 10) |
- (s->repeat << 9) |
- (s->auto_init << 8) |
- (s->running << 7) |
- (s->priority << 6) |
- (s->bs << 4);
- break;
-
- case 0xbc4: /* DMA_LCD_CTRL */
- qemu_irq_lower(s->irq);
- *ret = (s->dst << 8) |
- ((s->src & 0x6) << 5) |
- (s->condition << 3) |
- (s->interrupts << 1) |
- s->dual;
- break;
-
- case 0xbc8: /* TOP_B1_L */
- *ret = s->src_f1_top & 0xffff;
- break;
-
- case 0xbca: /* TOP_B1_U */
- *ret = s->src_f1_top >> 16;
- break;
-
- case 0xbcc: /* BOT_B1_L */
- *ret = s->src_f1_bottom & 0xffff;
- break;
-
- case 0xbce: /* BOT_B1_U */
- *ret = s->src_f1_bottom >> 16;
- break;
-
- case 0xbd0: /* TOP_B2_L */
- *ret = s->src_f2_top & 0xffff;
- break;
-
- case 0xbd2: /* TOP_B2_U */
- *ret = s->src_f2_top >> 16;
- break;
-
- case 0xbd4: /* BOT_B2_L */
- *ret = s->src_f2_bottom & 0xffff;
- break;
-
- case 0xbd6: /* BOT_B2_U */
- *ret = s->src_f2_bottom >> 16;
- break;
-
- case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
- *ret = s->element_index_f1;
- break;
-
- case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
- *ret = s->frame_index_f1 & 0xffff;
- break;
-
- case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
- *ret = s->frame_index_f1 >> 16;
- break;
-
- case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
- *ret = s->element_index_f2;
- break;
-
- case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
- *ret = s->frame_index_f2 & 0xffff;
- break;
-
- case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
- *ret = s->frame_index_f2 >> 16;
- break;
-
- case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
- *ret = s->elements_f1;
- break;
-
- case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
- *ret = s->frames_f1;
- break;
-
- case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
- *ret = s->elements_f2;
- break;
-
- case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
- *ret = s->frames_f2;
- break;
-
- case 0xbea: /* DMA_LCD_LCH_CTRL */
- *ret = s->lch_type;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_3_1_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
- uint16_t value)
-{
- switch (offset) {
- case 0x300: /* SYS_DMA_LCD_CTRL */
- s->src = (value & 0x40) ? imif : emiff;
- s->condition = 0;
- /* Assume no bus errors and thus no BUS_ERROR irq bits. */
- s->interrupts = (value >> 1) & 1;
- s->dual = value & 1;
- break;
-
- case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
- s->src_f1_top &= 0xffff0000;
- s->src_f1_top |= 0x0000ffff & value;
- break;
-
- case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
- s->src_f1_top &= 0x0000ffff;
- s->src_f1_top |= value << 16;
- break;
-
- case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
- s->src_f1_bottom &= 0xffff0000;
- s->src_f1_bottom |= 0x0000ffff & value;
- break;
-
- case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
- s->src_f1_bottom &= 0x0000ffff;
- s->src_f1_bottom |= value << 16;
- break;
-
- case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
- s->src_f2_top &= 0xffff0000;
- s->src_f2_top |= 0x0000ffff & value;
- break;
-
- case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
- s->src_f2_top &= 0x0000ffff;
- s->src_f2_top |= value << 16;
- break;
-
- case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
- s->src_f2_bottom &= 0xffff0000;
- s->src_f2_bottom |= 0x0000ffff & value;
- break;
-
- case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
- s->src_f2_bottom &= 0x0000ffff;
- s->src_f2_bottom |= value << 16;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_3_1_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
- uint16_t *ret)
-{
- int i;
-
- switch (offset) {
- case 0x300: /* SYS_DMA_LCD_CTRL */
- i = s->condition;
- s->condition = 0;
- qemu_irq_lower(s->irq);
- *ret = ((s->src == imif) << 6) | (i << 3) |
- (s->interrupts << 1) | s->dual;
- break;
-
- case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
- *ret = s->src_f1_top & 0xffff;
- break;
-
- case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
- *ret = s->src_f1_top >> 16;
- break;
-
- case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
- *ret = s->src_f1_bottom & 0xffff;
- break;
-
- case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
- *ret = s->src_f1_bottom >> 16;
- break;
-
- case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
- *ret = s->src_f2_top & 0xffff;
- break;
-
- case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
- *ret = s->src_f2_top >> 16;
- break;
-
- case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
- *ret = s->src_f2_bottom & 0xffff;
- break;
-
- case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
- *ret = s->src_f2_bottom >> 16;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_sys_write(struct omap_dma_s *s, int offset, uint16_t value)
-{
- switch (offset) {
- case 0x400: /* SYS_DMA_GCR */
- s->gcr = value;
- break;
-
- case 0x404: /* DMA_GSCR */
- if (value & 0x8)
- omap_dma_disable_3_1_mapping(s);
- else
- omap_dma_enable_3_1_mapping(s);
- break;
-
- case 0x408: /* DMA_GRST */
- if (value & 0x1)
- omap_dma_reset(s->dma);
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static int omap_dma_sys_read(struct omap_dma_s *s, int offset,
- uint16_t *ret)
-{
- switch (offset) {
- case 0x400: /* SYS_DMA_GCR */
- *ret = s->gcr;
- break;
-
- case 0x404: /* DMA_GSCR */
- *ret = s->omap_3_1_mapping_disabled << 3;
- break;
-
- case 0x408: /* DMA_GRST */
- *ret = 0;
- break;
-
- case 0x442: /* DMA_HW_ID */
- case 0x444: /* DMA_PCh2_ID */
- case 0x446: /* DMA_PCh0_ID */
- case 0x448: /* DMA_PCh1_ID */
- case 0x44a: /* DMA_PChG_ID */
- case 0x44c: /* DMA_PChD_ID */
- *ret = 1;
- break;
-
- case 0x44e: /* DMA_CAPS_0_U */
- *ret = (s->caps[0] >> 16) & 0xffff;
- break;
- case 0x450: /* DMA_CAPS_0_L */
- *ret = (s->caps[0] >> 0) & 0xffff;
- break;
-
- case 0x452: /* DMA_CAPS_1_U */
- *ret = (s->caps[1] >> 16) & 0xffff;
- break;
- case 0x454: /* DMA_CAPS_1_L */
- *ret = (s->caps[1] >> 0) & 0xffff;
- break;
-
- case 0x456: /* DMA_CAPS_2 */
- *ret = s->caps[2];
- break;
-
- case 0x458: /* DMA_CAPS_3 */
- *ret = s->caps[3];
- break;
-
- case 0x45a: /* DMA_CAPS_4 */
- *ret = s->caps[4];
- break;
-
- case 0x460: /* DMA_PCh2_SR */
- case 0x480: /* DMA_PCh0_SR */
- case 0x482: /* DMA_PCh1_SR */
- case 0x4c0: /* DMA_PChD_SR_0 */
- printf("%s: Physical Channel Status Registers not implemented.\n",
- __FUNCTION__);
- *ret = 0xff;
- break;
-
- default:
- return 1;
- }
- return 0;
-}
-
-static uint64_t omap_dma_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- int reg, ch;
- uint16_t ret;
-
- if (size != 2) {
- return omap_badwidth_read16(opaque, addr);
- }
-
- switch (addr) {
- case 0x300 ... 0x3fe:
- if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
- if (omap_dma_3_1_lcd_read(&s->lcd_ch, addr, &ret))
- break;
- return ret;
- }
- /* Fall through. */
- case 0x000 ... 0x2fe:
- reg = addr & 0x3f;
- ch = (addr >> 6) & 0x0f;
- if (omap_dma_ch_reg_read(s, &s->ch[ch], reg, &ret))
- break;
- return ret;
-
- case 0x404 ... 0x4fe:
- if (s->model <= omap_dma_3_1)
- break;
- /* Fall through. */
- case 0x400:
- if (omap_dma_sys_read(s, addr, &ret))
- break;
- return ret;
-
- case 0xb00 ... 0xbfe:
- if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
- if (omap_dma_3_2_lcd_read(&s->lcd_ch, addr, &ret))
- break;
- return ret;
- }
- break;
- }
-
- OMAP_BAD_REG(addr);
- return 0;
-}
-
-static void omap_dma_write(void *opaque, hwaddr addr,
- uint64_t value, unsigned size)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- int reg, ch;
-
- if (size != 2) {
- return omap_badwidth_write16(opaque, addr, value);
- }
-
- switch (addr) {
- case 0x300 ... 0x3fe:
- if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
- if (omap_dma_3_1_lcd_write(&s->lcd_ch, addr, value))
- break;
- return;
- }
- /* Fall through. */
- case 0x000 ... 0x2fe:
- reg = addr & 0x3f;
- ch = (addr >> 6) & 0x0f;
- if (omap_dma_ch_reg_write(s, &s->ch[ch], reg, value))
- break;
- return;
-
- case 0x404 ... 0x4fe:
- if (s->model <= omap_dma_3_1)
- break;
- case 0x400:
- /* Fall through. */
- if (omap_dma_sys_write(s, addr, value))
- break;
- return;
-
- case 0xb00 ... 0xbfe:
- if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
- if (omap_dma_3_2_lcd_write(&s->lcd_ch, addr, value))
- break;
- return;
- }
- break;
- }
-
- OMAP_BAD_REG(addr);
-}
-
-static const MemoryRegionOps omap_dma_ops = {
- .read = omap_dma_read,
- .write = omap_dma_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void omap_dma_request(void *opaque, int drq, int req)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- /* The request pins are level triggered in QEMU. */
- if (req) {
- if (~s->dma->drqbmp & (1 << drq)) {
- s->dma->drqbmp |= 1 << drq;
- omap_dma_process_request(s, drq);
- }
- } else
- s->dma->drqbmp &= ~(1 << drq);
-}
-
-/* XXX: this won't be needed once soc_dma knows about clocks. */
-static void omap_dma_clk_update(void *opaque, int line, int on)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- int i;
-
- s->dma->freq = omap_clk_getrate(s->clk);
-
- for (i = 0; i < s->chans; i ++)
- if (s->ch[i].active)
- soc_dma_set_request(s->ch[i].dma, on);
-}
-
-static void omap_dma_setcaps(struct omap_dma_s *s)
-{
- switch (s->model) {
- default:
- case omap_dma_3_1:
- break;
- case omap_dma_3_2:
- case omap_dma_4:
- /* XXX Only available for sDMA */
- s->caps[0] =
- (1 << 19) | /* Constant Fill Capability */
- (1 << 18); /* Transparent BLT Capability */
- s->caps[1] =
- (1 << 1); /* 1-bit palettized capability (DMA 3.2 only) */
- s->caps[2] =
- (1 << 8) | /* SEPARATE_SRC_AND_DST_INDEX_CPBLTY */
- (1 << 7) | /* DST_DOUBLE_INDEX_ADRS_CPBLTY */
- (1 << 6) | /* DST_SINGLE_INDEX_ADRS_CPBLTY */
- (1 << 5) | /* DST_POST_INCRMNT_ADRS_CPBLTY */
- (1 << 4) | /* DST_CONST_ADRS_CPBLTY */
- (1 << 3) | /* SRC_DOUBLE_INDEX_ADRS_CPBLTY */
- (1 << 2) | /* SRC_SINGLE_INDEX_ADRS_CPBLTY */
- (1 << 1) | /* SRC_POST_INCRMNT_ADRS_CPBLTY */
- (1 << 0); /* SRC_CONST_ADRS_CPBLTY */
- s->caps[3] =
- (1 << 6) | /* BLOCK_SYNCHR_CPBLTY (DMA 4 only) */
- (1 << 7) | /* PKT_SYNCHR_CPBLTY (DMA 4 only) */
- (1 << 5) | /* CHANNEL_CHAINING_CPBLTY */
- (1 << 4) | /* LCh_INTERLEAVE_CPBLTY */
- (1 << 3) | /* AUTOINIT_REPEAT_CPBLTY (DMA 3.2 only) */
- (1 << 2) | /* AUTOINIT_ENDPROG_CPBLTY (DMA 3.2 only) */
- (1 << 1) | /* FRAME_SYNCHR_CPBLTY */
- (1 << 0); /* ELMNT_SYNCHR_CPBLTY */
- s->caps[4] =
- (1 << 7) | /* PKT_INTERRUPT_CPBLTY (DMA 4 only) */
- (1 << 6) | /* SYNC_STATUS_CPBLTY */
- (1 << 5) | /* BLOCK_INTERRUPT_CPBLTY */
- (1 << 4) | /* LAST_FRAME_INTERRUPT_CPBLTY */
- (1 << 3) | /* FRAME_INTERRUPT_CPBLTY */
- (1 << 2) | /* HALF_FRAME_INTERRUPT_CPBLTY */
- (1 << 1) | /* EVENT_DROP_INTERRUPT_CPBLTY */
- (1 << 0); /* TIMEOUT_INTERRUPT_CPBLTY (DMA 3.2 only) */
- break;
- }
-}
-
-struct soc_dma_s *omap_dma_init(hwaddr base, qemu_irq *irqs,
- MemoryRegion *sysmem,
- qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk,
- enum omap_dma_model model)
-{
- int num_irqs, memsize, i;
- struct omap_dma_s *s = (struct omap_dma_s *)
- g_malloc0(sizeof(struct omap_dma_s));
-
- if (model <= omap_dma_3_1) {
- num_irqs = 6;
- memsize = 0x800;
- } else {
- num_irqs = 16;
- memsize = 0xc00;
- }
- s->model = model;
- s->mpu = mpu;
- s->clk = clk;
- s->lcd_ch.irq = lcd_irq;
- s->lcd_ch.mpu = mpu;
-
- s->dma = soc_dma_init((model <= omap_dma_3_1) ? 9 : 16);
- s->dma->freq = omap_clk_getrate(clk);
- s->dma->transfer_fn = omap_dma_transfer_generic;
- s->dma->setup_fn = omap_dma_transfer_setup;
- s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
- s->dma->opaque = s;
-
- while (num_irqs --)
- s->ch[num_irqs].irq = irqs[num_irqs];
- for (i = 0; i < 3; i ++) {
- s->ch[i].sibling = &s->ch[i + 6];
- s->ch[i + 6].sibling = &s->ch[i];
- }
- for (i = (model <= omap_dma_3_1) ? 8 : 15; i >= 0; i --) {
- s->ch[i].dma = &s->dma->ch[i];
- s->dma->ch[i].opaque = &s->ch[i];
- }
-
- omap_dma_setcaps(s);
- omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
- omap_dma_reset(s->dma);
- omap_dma_clk_update(s, 0, 1);
-
- memory_region_init_io(&s->iomem, &omap_dma_ops, s, "omap.dma", memsize);
- memory_region_add_subregion(sysmem, base, &s->iomem);
-
- mpu->drq = s->dma->drq;
-
- return s->dma;
-}
-
-static void omap_dma_interrupts_4_update(struct omap_dma_s *s)
-{
- struct omap_dma_channel_s *ch = s->ch;
- uint32_t bmp, bit;
-
- for (bmp = 0, bit = 1; bit; ch ++, bit <<= 1)
- if (ch->status) {
- bmp |= bit;
- ch->cstatus |= ch->status;
- ch->status = 0;
- }
- if ((s->irqstat[0] |= s->irqen[0] & bmp))
- qemu_irq_raise(s->irq[0]);
- if ((s->irqstat[1] |= s->irqen[1] & bmp))
- qemu_irq_raise(s->irq[1]);
- if ((s->irqstat[2] |= s->irqen[2] & bmp))
- qemu_irq_raise(s->irq[2]);
- if ((s->irqstat[3] |= s->irqen[3] & bmp))
- qemu_irq_raise(s->irq[3]);
-}
-
-static uint64_t omap_dma4_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- int irqn = 0, chnum;
- struct omap_dma_channel_s *ch;
-
- if (size == 1) {
- return omap_badwidth_read16(opaque, addr);
- }
-
- switch (addr) {
- case 0x00: /* DMA4_REVISION */
- return 0x40;
-
- case 0x14: /* DMA4_IRQSTATUS_L3 */
- irqn ++;
- /* fall through */
- case 0x10: /* DMA4_IRQSTATUS_L2 */
- irqn ++;
- /* fall through */
- case 0x0c: /* DMA4_IRQSTATUS_L1 */
- irqn ++;
- /* fall through */
- case 0x08: /* DMA4_IRQSTATUS_L0 */
- return s->irqstat[irqn];
-
- case 0x24: /* DMA4_IRQENABLE_L3 */
- irqn ++;
- /* fall through */
- case 0x20: /* DMA4_IRQENABLE_L2 */
- irqn ++;
- /* fall through */
- case 0x1c: /* DMA4_IRQENABLE_L1 */
- irqn ++;
- /* fall through */
- case 0x18: /* DMA4_IRQENABLE_L0 */
- return s->irqen[irqn];
-
- case 0x28: /* DMA4_SYSSTATUS */
- return 1; /* RESETDONE */
-
- case 0x2c: /* DMA4_OCP_SYSCONFIG */
- return s->ocp;
-
- case 0x64: /* DMA4_CAPS_0 */
- return s->caps[0];
- case 0x6c: /* DMA4_CAPS_2 */
- return s->caps[2];
- case 0x70: /* DMA4_CAPS_3 */
- return s->caps[3];
- case 0x74: /* DMA4_CAPS_4 */
- return s->caps[4];
-
- case 0x78: /* DMA4_GCR */
- return s->gcr;
-
- case 0x80 ... 0xfff:
- addr -= 0x80;
- chnum = addr / 0x60;
- ch = s->ch + chnum;
- addr -= chnum * 0x60;
- break;
-
- default:
- OMAP_BAD_REG(addr);
- return 0;
- }
-
- /* Per-channel registers */
- switch (addr) {
- case 0x00: /* DMA4_CCR */
- return (ch->buf_disable << 25) |
- (ch->src_sync << 24) |
- (ch->prefetch << 23) |
- ((ch->sync & 0x60) << 14) |
- (ch->bs << 18) |
- (ch->transparent_copy << 17) |
- (ch->constant_fill << 16) |
- (ch->mode[1] << 14) |
- (ch->mode[0] << 12) |
- (0 << 10) | (0 << 9) |
- (ch->suspend << 8) |
- (ch->enable << 7) |
- (ch->priority << 6) |
- (ch->fs << 5) | (ch->sync & 0x1f);
-
- case 0x04: /* DMA4_CLNK_CTRL */
- return (ch->link_enabled << 15) | ch->link_next_ch;
-
- case 0x08: /* DMA4_CICR */
- return ch->interrupts;
-
- case 0x0c: /* DMA4_CSR */
- return ch->cstatus;
-
- case 0x10: /* DMA4_CSDP */
- return (ch->endian[0] << 21) |
- (ch->endian_lock[0] << 20) |
- (ch->endian[1] << 19) |
- (ch->endian_lock[1] << 18) |
- (ch->write_mode << 16) |
- (ch->burst[1] << 14) |
- (ch->pack[1] << 13) |
- (ch->translate[1] << 9) |
- (ch->burst[0] << 7) |
- (ch->pack[0] << 6) |
- (ch->translate[0] << 2) |
- (ch->data_type >> 1);
-
- case 0x14: /* DMA4_CEN */
- return ch->elements;
-
- case 0x18: /* DMA4_CFN */
- return ch->frames;
-
- case 0x1c: /* DMA4_CSSA */
- return ch->addr[0];
-
- case 0x20: /* DMA4_CDSA */
- return ch->addr[1];
-
- case 0x24: /* DMA4_CSEI */
- return ch->element_index[0];
-
- case 0x28: /* DMA4_CSFI */
- return ch->frame_index[0];
-
- case 0x2c: /* DMA4_CDEI */
- return ch->element_index[1];
-
- case 0x30: /* DMA4_CDFI */
- return ch->frame_index[1];
-
- case 0x34: /* DMA4_CSAC */
- return ch->active_set.src & 0xffff;
-
- case 0x38: /* DMA4_CDAC */
- return ch->active_set.dest & 0xffff;
-
- case 0x3c: /* DMA4_CCEN */
- return ch->active_set.element;
-
- case 0x40: /* DMA4_CCFN */
- return ch->active_set.frame;
-
- case 0x44: /* DMA4_COLOR */
- /* XXX only in sDMA */
- return ch->color;
-
- default:
- OMAP_BAD_REG(addr);
- return 0;
- }
-}
-
-static void omap_dma4_write(void *opaque, hwaddr addr,
- uint64_t value, unsigned size)
-{
- struct omap_dma_s *s = (struct omap_dma_s *) opaque;
- int chnum, irqn = 0;
- struct omap_dma_channel_s *ch;
-
- if (size == 1) {
- return omap_badwidth_write16(opaque, addr, value);
- }
-
- switch (addr) {
- case 0x14: /* DMA4_IRQSTATUS_L3 */
- irqn ++;
- /* fall through */
- case 0x10: /* DMA4_IRQSTATUS_L2 */
- irqn ++;
- /* fall through */
- case 0x0c: /* DMA4_IRQSTATUS_L1 */
- irqn ++;
- /* fall through */
- case 0x08: /* DMA4_IRQSTATUS_L0 */
- s->irqstat[irqn] &= ~value;
- if (!s->irqstat[irqn])
- qemu_irq_lower(s->irq[irqn]);
- return;
-
- case 0x24: /* DMA4_IRQENABLE_L3 */
- irqn ++;
- /* fall through */
- case 0x20: /* DMA4_IRQENABLE_L2 */
- irqn ++;
- /* fall through */
- case 0x1c: /* DMA4_IRQENABLE_L1 */
- irqn ++;
- /* fall through */
- case 0x18: /* DMA4_IRQENABLE_L0 */
- s->irqen[irqn] = value;
- return;
-
- case 0x2c: /* DMA4_OCP_SYSCONFIG */
- if (value & 2) /* SOFTRESET */
- omap_dma_reset(s->dma);
- s->ocp = value & 0x3321;
- if (((s->ocp >> 12) & 3) == 3) /* MIDLEMODE */
- fprintf(stderr, "%s: invalid DMA power mode\n", __FUNCTION__);
- return;
-
- case 0x78: /* DMA4_GCR */
- s->gcr = value & 0x00ff00ff;
- if ((value & 0xff) == 0x00) /* MAX_CHANNEL_FIFO_DEPTH */
- fprintf(stderr, "%s: wrong FIFO depth in GCR\n", __FUNCTION__);
- return;
-
- case 0x80 ... 0xfff:
- addr -= 0x80;
- chnum = addr / 0x60;
- ch = s->ch + chnum;
- addr -= chnum * 0x60;
- break;
-
- case 0x00: /* DMA4_REVISION */
- case 0x28: /* DMA4_SYSSTATUS */
- case 0x64: /* DMA4_CAPS_0 */
- case 0x6c: /* DMA4_CAPS_2 */
- case 0x70: /* DMA4_CAPS_3 */
- case 0x74: /* DMA4_CAPS_4 */
- OMAP_RO_REG(addr);
- return;
-
- default:
- OMAP_BAD_REG(addr);
- return;
- }
-
- /* Per-channel registers */
- switch (addr) {
- case 0x00: /* DMA4_CCR */
- ch->buf_disable = (value >> 25) & 1;
- ch->src_sync = (value >> 24) & 1; /* XXX For CamDMA must be 1 */
- if (ch->buf_disable && !ch->src_sync)
- fprintf(stderr, "%s: Buffering disable is not allowed in "
- "destination synchronised mode\n", __FUNCTION__);
- ch->prefetch = (value >> 23) & 1;
- ch->bs = (value >> 18) & 1;
- ch->transparent_copy = (value >> 17) & 1;
- ch->constant_fill = (value >> 16) & 1;
- ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
- ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
- ch->suspend = (value & 0x0100) >> 8;
- ch->priority = (value & 0x0040) >> 6;
- ch->fs = (value & 0x0020) >> 5;
- if (ch->fs && ch->bs && ch->mode[0] && ch->mode[1])
- fprintf(stderr, "%s: For a packet transfer at least one port "
- "must be constant-addressed\n", __FUNCTION__);
- ch->sync = (value & 0x001f) | ((value >> 14) & 0x0060);
- /* XXX must be 0x01 for CamDMA */
-
- if (value & 0x0080)
- omap_dma_enable_channel(s, ch);
- else
- omap_dma_disable_channel(s, ch);
-
- break;
-
- case 0x04: /* DMA4_CLNK_CTRL */
- ch->link_enabled = (value >> 15) & 0x1;
- ch->link_next_ch = value & 0x1f;
- break;
-
- case 0x08: /* DMA4_CICR */
- ch->interrupts = value & 0x09be;
- break;
-
- case 0x0c: /* DMA4_CSR */
- ch->cstatus &= ~value;
- break;
-
- case 0x10: /* DMA4_CSDP */
- ch->endian[0] =(value >> 21) & 1;
- ch->endian_lock[0] =(value >> 20) & 1;
- ch->endian[1] =(value >> 19) & 1;
- ch->endian_lock[1] =(value >> 18) & 1;
- if (ch->endian[0] != ch->endian[1])
- fprintf(stderr, "%s: DMA endiannes conversion enable attempt\n",
- __FUNCTION__);
- ch->write_mode = (value >> 16) & 3;
- ch->burst[1] = (value & 0xc000) >> 14;
- ch->pack[1] = (value & 0x2000) >> 13;
- ch->translate[1] = (value & 0x1e00) >> 9;
- ch->burst[0] = (value & 0x0180) >> 7;
- ch->pack[0] = (value & 0x0040) >> 6;
- ch->translate[0] = (value & 0x003c) >> 2;
- if (ch->translate[0] | ch->translate[1])
- fprintf(stderr, "%s: bad MReqAddressTranslate sideband signal\n",
- __FUNCTION__);
- ch->data_type = 1 << (value & 3);
- if ((value & 3) == 3)
- printf("%s: bad data_type for DMA channel\n", __FUNCTION__);
- break;
-
- case 0x14: /* DMA4_CEN */
- ch->set_update = 1;
- ch->elements = value & 0xffffff;
- break;
-
- case 0x18: /* DMA4_CFN */
- ch->frames = value & 0xffff;
- ch->set_update = 1;
- break;
-
- case 0x1c: /* DMA4_CSSA */
- ch->addr[0] = (hwaddr) (uint32_t) value;
- ch->set_update = 1;
- break;
-
- case 0x20: /* DMA4_CDSA */
- ch->addr[1] = (hwaddr) (uint32_t) value;
- ch->set_update = 1;
- break;
-
- case 0x24: /* DMA4_CSEI */
- ch->element_index[0] = (int16_t) value;
- ch->set_update = 1;
- break;
-
- case 0x28: /* DMA4_CSFI */
- ch->frame_index[0] = (int32_t) value;
- ch->set_update = 1;
- break;
-
- case 0x2c: /* DMA4_CDEI */
- ch->element_index[1] = (int16_t) value;
- ch->set_update = 1;
- break;
-
- case 0x30: /* DMA4_CDFI */
- ch->frame_index[1] = (int32_t) value;
- ch->set_update = 1;
- break;
-
- case 0x44: /* DMA4_COLOR */
- /* XXX only in sDMA */
- ch->color = value;
- break;
-
- case 0x34: /* DMA4_CSAC */
- case 0x38: /* DMA4_CDAC */
- case 0x3c: /* DMA4_CCEN */
- case 0x40: /* DMA4_CCFN */
- OMAP_RO_REG(addr);
- break;
-
- default:
- OMAP_BAD_REG(addr);
- }
-}
-
-static const MemoryRegionOps omap_dma4_ops = {
- .read = omap_dma4_read,
- .write = omap_dma4_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-struct soc_dma_s *omap_dma4_init(hwaddr base, qemu_irq *irqs,
- MemoryRegion *sysmem,
- struct omap_mpu_state_s *mpu, int fifo,
- int chans, omap_clk iclk, omap_clk fclk)
-{
- int i;
- struct omap_dma_s *s = (struct omap_dma_s *)
- g_malloc0(sizeof(struct omap_dma_s));
-
- s->model = omap_dma_4;
- s->chans = chans;
- s->mpu = mpu;
- s->clk = fclk;
-
- s->dma = soc_dma_init(s->chans);
- s->dma->freq = omap_clk_getrate(fclk);
- s->dma->transfer_fn = omap_dma_transfer_generic;
- s->dma->setup_fn = omap_dma_transfer_setup;
- s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 64);
- s->dma->opaque = s;
- for (i = 0; i < s->chans; i ++) {
- s->ch[i].dma = &s->dma->ch[i];
- s->dma->ch[i].opaque = &s->ch[i];
- }
-
- memcpy(&s->irq, irqs, sizeof(s->irq));
- s->intr_update = omap_dma_interrupts_4_update;
-
- omap_dma_setcaps(s);
- omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
- omap_dma_reset(s->dma);
- omap_dma_clk_update(s, 0, !!s->dma->freq);
-
- memory_region_init_io(&s->iomem, &omap_dma4_ops, s, "omap.dma4", 0x1000);
- memory_region_add_subregion(sysmem, base, &s->iomem);
-
- mpu->drq = s->dma->drq;
-
- return s->dma;
-}
-
-struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct soc_dma_s *dma)
-{
- struct omap_dma_s *s = dma->opaque;
-
- return &s->lcd_ch;
-}
+++ /dev/null
-/*
- * Intel XScale PXA255/270 DMA controller.
- *
- * Copyright (c) 2006 Openedhand Ltd.
- * Copyright (c) 2006 Thorsten Zitterell
- * Written by Andrzej Zaborowski <balrog@zabor.org>
- *
- * This code is licensed under the GPL.
- */
-
-#include "hw/hw.h"
-#include "hw/arm/pxa.h"
-#include "hw/sysbus.h"
-
-#define PXA255_DMA_NUM_CHANNELS 16
-#define PXA27X_DMA_NUM_CHANNELS 32
-
-#define PXA2XX_DMA_NUM_REQUESTS 75
-
-typedef struct {
- uint32_t descr;
- uint32_t src;
- uint32_t dest;
- uint32_t cmd;
- uint32_t state;
- int request;
-} PXA2xxDMAChannel;
-
-typedef struct PXA2xxDMAState {
- SysBusDevice busdev;
- MemoryRegion iomem;
- qemu_irq irq;
-
- uint32_t stopintr;
- uint32_t eorintr;
- uint32_t rasintr;
- uint32_t startintr;
- uint32_t endintr;
-
- uint32_t align;
- uint32_t pio;
-
- int channels;
- PXA2xxDMAChannel *chan;
-
- uint8_t req[PXA2XX_DMA_NUM_REQUESTS];
-
- /* Flag to avoid recursive DMA invocations. */
- int running;
-} PXA2xxDMAState;
-
-#define DCSR0 0x0000 /* DMA Control / Status register for Channel 0 */
-#define DCSR31 0x007c /* DMA Control / Status register for Channel 31 */
-#define DALGN 0x00a0 /* DMA Alignment register */
-#define DPCSR 0x00a4 /* DMA Programmed I/O Control Status register */
-#define DRQSR0 0x00e0 /* DMA DREQ<0> Status register */
-#define DRQSR1 0x00e4 /* DMA DREQ<1> Status register */
-#define DRQSR2 0x00e8 /* DMA DREQ<2> Status register */
-#define DINT 0x00f0 /* DMA Interrupt register */
-#define DRCMR0 0x0100 /* Request to Channel Map register 0 */
-#define DRCMR63 0x01fc /* Request to Channel Map register 63 */
-#define D_CH0 0x0200 /* Channel 0 Descriptor start */
-#define DRCMR64 0x1100 /* Request to Channel Map register 64 */
-#define DRCMR74 0x1128 /* Request to Channel Map register 74 */
-
-/* Per-channel register */
-#define DDADR 0x00
-#define DSADR 0x01
-#define DTADR 0x02
-#define DCMD 0x03
-
-/* Bit-field masks */
-#define DRCMR_CHLNUM 0x1f
-#define DRCMR_MAPVLD (1 << 7)
-#define DDADR_STOP (1 << 0)
-#define DDADR_BREN (1 << 1)
-#define DCMD_LEN 0x1fff
-#define DCMD_WIDTH(x) (1 << ((((x) >> 14) & 3) - 1))
-#define DCMD_SIZE(x) (4 << (((x) >> 16) & 3))
-#define DCMD_FLYBYT (1 << 19)
-#define DCMD_FLYBYS (1 << 20)
-#define DCMD_ENDIRQEN (1 << 21)
-#define DCMD_STARTIRQEN (1 << 22)
-#define DCMD_CMPEN (1 << 25)
-#define DCMD_FLOWTRG (1 << 28)
-#define DCMD_FLOWSRC (1 << 29)
-#define DCMD_INCTRGADDR (1 << 30)
-#define DCMD_INCSRCADDR (1 << 31)
-#define DCSR_BUSERRINTR (1 << 0)
-#define DCSR_STARTINTR (1 << 1)
-#define DCSR_ENDINTR (1 << 2)
-#define DCSR_STOPINTR (1 << 3)
-#define DCSR_RASINTR (1 << 4)
-#define DCSR_REQPEND (1 << 8)
-#define DCSR_EORINT (1 << 9)
-#define DCSR_CMPST (1 << 10)
-#define DCSR_MASKRUN (1 << 22)
-#define DCSR_RASIRQEN (1 << 23)
-#define DCSR_CLRCMPST (1 << 24)
-#define DCSR_SETCMPST (1 << 25)
-#define DCSR_EORSTOPEN (1 << 26)
-#define DCSR_EORJMPEN (1 << 27)
-#define DCSR_EORIRQEN (1 << 28)
-#define DCSR_STOPIRQEN (1 << 29)
-#define DCSR_NODESCFETCH (1 << 30)
-#define DCSR_RUN (1 << 31)
-
-static inline void pxa2xx_dma_update(PXA2xxDMAState *s, int ch)
-{
- if (ch >= 0) {
- if ((s->chan[ch].state & DCSR_STOPIRQEN) &&
- (s->chan[ch].state & DCSR_STOPINTR))
- s->stopintr |= 1 << ch;
- else
- s->stopintr &= ~(1 << ch);
-
- if ((s->chan[ch].state & DCSR_EORIRQEN) &&
- (s->chan[ch].state & DCSR_EORINT))
- s->eorintr |= 1 << ch;
- else
- s->eorintr &= ~(1 << ch);
-
- if ((s->chan[ch].state & DCSR_RASIRQEN) &&
- (s->chan[ch].state & DCSR_RASINTR))
- s->rasintr |= 1 << ch;
- else
- s->rasintr &= ~(1 << ch);
-
- if (s->chan[ch].state & DCSR_STARTINTR)
- s->startintr |= 1 << ch;
- else
- s->startintr &= ~(1 << ch);
-
- if (s->chan[ch].state & DCSR_ENDINTR)
- s->endintr |= 1 << ch;
- else
- s->endintr &= ~(1 << ch);
- }
-
- if (s->stopintr | s->eorintr | s->rasintr | s->startintr | s->endintr)
- qemu_irq_raise(s->irq);
- else
- qemu_irq_lower(s->irq);
-}
-
-static inline void pxa2xx_dma_descriptor_fetch(
- PXA2xxDMAState *s, int ch)
-{
- uint32_t desc[4];
- hwaddr daddr = s->chan[ch].descr & ~0xf;
- if ((s->chan[ch].descr & DDADR_BREN) && (s->chan[ch].state & DCSR_CMPST))
- daddr += 32;
-
- cpu_physical_memory_read(daddr, (uint8_t *) desc, 16);
- s->chan[ch].descr = desc[DDADR];
- s->chan[ch].src = desc[DSADR];
- s->chan[ch].dest = desc[DTADR];
- s->chan[ch].cmd = desc[DCMD];
-
- if (s->chan[ch].cmd & DCMD_FLOWSRC)
- s->chan[ch].src &= ~3;
- if (s->chan[ch].cmd & DCMD_FLOWTRG)
- s->chan[ch].dest &= ~3;
-
- if (s->chan[ch].cmd & (DCMD_CMPEN | DCMD_FLYBYS | DCMD_FLYBYT))
- printf("%s: unsupported mode in channel %i\n", __FUNCTION__, ch);
-
- if (s->chan[ch].cmd & DCMD_STARTIRQEN)
- s->chan[ch].state |= DCSR_STARTINTR;
-}
-
-static void pxa2xx_dma_run(PXA2xxDMAState *s)
-{
- int c, srcinc, destinc;
- uint32_t n, size;
- uint32_t width;
- uint32_t length;
- uint8_t buffer[32];
- PXA2xxDMAChannel *ch;
-
- if (s->running ++)
- return;
-
- while (s->running) {
- s->running = 1;
- for (c = 0; c < s->channels; c ++) {
- ch = &s->chan[c];
-
- while ((ch->state & DCSR_RUN) && !(ch->state & DCSR_STOPINTR)) {
- /* Test for pending requests */
- if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) && !ch->request)
- break;
-
- length = ch->cmd & DCMD_LEN;
- size = DCMD_SIZE(ch->cmd);
- width = DCMD_WIDTH(ch->cmd);
-
- srcinc = (ch->cmd & DCMD_INCSRCADDR) ? width : 0;
- destinc = (ch->cmd & DCMD_INCTRGADDR) ? width : 0;
-
- while (length) {
- size = MIN(length, size);
-
- for (n = 0; n < size; n += width) {
- cpu_physical_memory_read(ch->src, buffer + n, width);
- ch->src += srcinc;
- }
-
- for (n = 0; n < size; n += width) {
- cpu_physical_memory_write(ch->dest, buffer + n, width);
- ch->dest += destinc;
- }
-
- length -= size;
-
- if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) &&
- !ch->request) {
- ch->state |= DCSR_EORINT;
- if (ch->state & DCSR_EORSTOPEN)
- ch->state |= DCSR_STOPINTR;
- if ((ch->state & DCSR_EORJMPEN) &&
- !(ch->state & DCSR_NODESCFETCH))
- pxa2xx_dma_descriptor_fetch(s, c);
- break;
- }
- }
-
- ch->cmd = (ch->cmd & ~DCMD_LEN) | length;
-
- /* Is the transfer complete now? */
- if (!length) {
- if (ch->cmd & DCMD_ENDIRQEN)
- ch->state |= DCSR_ENDINTR;
-
- if ((ch->state & DCSR_NODESCFETCH) ||
- (ch->descr & DDADR_STOP) ||
- (ch->state & DCSR_EORSTOPEN)) {
- ch->state |= DCSR_STOPINTR;
- ch->state &= ~DCSR_RUN;
-
- break;
- }
-
- ch->state |= DCSR_STOPINTR;
- break;
- }
- }
- }
-
- s->running --;
- }
-}
-
-static uint64_t pxa2xx_dma_read(void *opaque, hwaddr offset,
- unsigned size)
-{
- PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
- unsigned int channel;
-
- if (size != 4) {
- hw_error("%s: Bad access width\n", __FUNCTION__);
- return 5;
- }
-
- switch (offset) {
- case DRCMR64 ... DRCMR74:
- offset -= DRCMR64 - DRCMR0 - (64 << 2);
- /* Fall through */
- case DRCMR0 ... DRCMR63:
- channel = (offset - DRCMR0) >> 2;
- return s->req[channel];
-
- case DRQSR0:
- case DRQSR1:
- case DRQSR2:
- return 0;
-
- case DCSR0 ... DCSR31:
- channel = offset >> 2;
- if (s->chan[channel].request)
- return s->chan[channel].state | DCSR_REQPEND;
- return s->chan[channel].state;
-
- case DINT:
- return s->stopintr | s->eorintr | s->rasintr |
- s->startintr | s->endintr;
-
- case DALGN:
- return s->align;
-
- case DPCSR:
- return s->pio;
- }
-
- if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) {
- channel = (offset - D_CH0) >> 4;
- switch ((offset & 0x0f) >> 2) {
- case DDADR:
- return s->chan[channel].descr;
- case DSADR:
- return s->chan[channel].src;
- case DTADR:
- return s->chan[channel].dest;
- case DCMD:
- return s->chan[channel].cmd;
- }
- }
-
- hw_error("%s: Bad offset 0x" TARGET_FMT_plx "\n", __FUNCTION__, offset);
- return 7;
-}
-
-static void pxa2xx_dma_write(void *opaque, hwaddr offset,
- uint64_t value, unsigned size)
-{
- PXA2xxDMAState *s = (PXA2xxDMAState *) opaque;
- unsigned int channel;
-
- if (size != 4) {
- hw_error("%s: Bad access width\n", __FUNCTION__);
- return;
- }
-
- switch (offset) {
- case DRCMR64 ... DRCMR74:
- offset -= DRCMR64 - DRCMR0 - (64 << 2);
- /* Fall through */
- case DRCMR0 ... DRCMR63:
- channel = (offset - DRCMR0) >> 2;
-
- if (value & DRCMR_MAPVLD)
- if ((value & DRCMR_CHLNUM) > s->channels)
- hw_error("%s: Bad DMA channel %i\n",
- __FUNCTION__, (unsigned)value & DRCMR_CHLNUM);
-
- s->req[channel] = value;
- break;
-
- case DRQSR0:
- case DRQSR1:
- case DRQSR2:
- /* Nothing to do */
- break;
-
- case DCSR0 ... DCSR31:
- channel = offset >> 2;
- s->chan[channel].state &= 0x0000071f & ~(value &
- (DCSR_EORINT | DCSR_ENDINTR |
- DCSR_STARTINTR | DCSR_BUSERRINTR));
- s->chan[channel].state |= value & 0xfc800000;
-
- if (s->chan[channel].state & DCSR_STOPIRQEN)
- s->chan[channel].state &= ~DCSR_STOPINTR;
-
- if (value & DCSR_NODESCFETCH) {
- /* No-descriptor-fetch mode */
- if (value & DCSR_RUN) {
- s->chan[channel].state &= ~DCSR_STOPINTR;
- pxa2xx_dma_run(s);
- }
- } else {
- /* Descriptor-fetch mode */
- if (value & DCSR_RUN) {
- s->chan[channel].state &= ~DCSR_STOPINTR;
- pxa2xx_dma_descriptor_fetch(s, channel);
- pxa2xx_dma_run(s);
- }
- }
-
- /* Shouldn't matter as our DMA is synchronous. */
- if (!(value & (DCSR_RUN | DCSR_MASKRUN)))
- s->chan[channel].state |= DCSR_STOPINTR;
-
- if (value & DCSR_CLRCMPST)
- s->chan[channel].state &= ~DCSR_CMPST;
- if (value & DCSR_SETCMPST)
- s->chan[channel].state |= DCSR_CMPST;
-
- pxa2xx_dma_update(s, channel);
- break;
-
- case DALGN:
- s->align = value;
- break;
-
- case DPCSR:
- s->pio = value & 0x80000001;
- break;
-
- default:
- if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) {
- channel = (offset - D_CH0) >> 4;
- switch ((offset & 0x0f) >> 2) {
- case DDADR:
- s->chan[channel].descr = value;
- break;
- case DSADR:
- s->chan[channel].src = value;
- break;
- case DTADR:
- s->chan[channel].dest = value;
- break;
- case DCMD:
- s->chan[channel].cmd = value;
- break;
- default:
- goto fail;
- }
-
- break;
- }
- fail:
- hw_error("%s: Bad offset " TARGET_FMT_plx "\n", __FUNCTION__, offset);
- }
-}
-
-static const MemoryRegionOps pxa2xx_dma_ops = {
- .read = pxa2xx_dma_read,
- .write = pxa2xx_dma_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static void pxa2xx_dma_request(void *opaque, int req_num, int on)
-{
- PXA2xxDMAState *s = opaque;
- int ch;
- if (req_num < 0 || req_num >= PXA2XX_DMA_NUM_REQUESTS)
- hw_error("%s: Bad DMA request %i\n", __FUNCTION__, req_num);
-
- if (!(s->req[req_num] & DRCMR_MAPVLD))
- return;
- ch = s->req[req_num] & DRCMR_CHLNUM;
-
- if (!s->chan[ch].request && on)
- s->chan[ch].state |= DCSR_RASINTR;
- else
- s->chan[ch].state &= ~DCSR_RASINTR;
- if (s->chan[ch].request && !on)
- s->chan[ch].state |= DCSR_EORINT;
-
- s->chan[ch].request = on;
- if (on) {
- pxa2xx_dma_run(s);
- pxa2xx_dma_update(s, ch);
- }
-}
-
-static int pxa2xx_dma_init(SysBusDevice *dev)
-{
- int i;
- PXA2xxDMAState *s;
- s = FROM_SYSBUS(PXA2xxDMAState, dev);
-
- if (s->channels <= 0) {
- return -1;
- }
-
- s->chan = g_malloc0(sizeof(PXA2xxDMAChannel) * s->channels);
-
- memset(s->chan, 0, sizeof(PXA2xxDMAChannel) * s->channels);
- for (i = 0; i < s->channels; i ++)
- s->chan[i].state = DCSR_STOPINTR;
-
- memset(s->req, 0, sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS);
-
- qdev_init_gpio_in(&dev->qdev, pxa2xx_dma_request, PXA2XX_DMA_NUM_REQUESTS);
-
- memory_region_init_io(&s->iomem, &pxa2xx_dma_ops, s,
- "pxa2xx.dma", 0x00010000);
- sysbus_init_mmio(dev, &s->iomem);
- sysbus_init_irq(dev, &s->irq);
-
- return 0;
-}
-
-DeviceState *pxa27x_dma_init(hwaddr base, qemu_irq irq)
-{
- DeviceState *dev;
-
- dev = qdev_create(NULL, "pxa2xx-dma");
- qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
- qdev_init_nofail(dev);
-
- sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
- sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
-
- return dev;
-}
-
-DeviceState *pxa255_dma_init(hwaddr base, qemu_irq irq)
-{
- DeviceState *dev;
-
- dev = qdev_create(NULL, "pxa2xx-dma");
- qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS);
- qdev_init_nofail(dev);
-
- sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
- sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
-
- return dev;
-}
-
-static bool is_version_0(void *opaque, int version_id)
-{
- return version_id == 0;
-}
-
-static VMStateDescription vmstate_pxa2xx_dma_chan = {
- .name = "pxa2xx_dma_chan",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32(descr, PXA2xxDMAChannel),
- VMSTATE_UINT32(src, PXA2xxDMAChannel),
- VMSTATE_UINT32(dest, PXA2xxDMAChannel),
- VMSTATE_UINT32(cmd, PXA2xxDMAChannel),
- VMSTATE_UINT32(state, PXA2xxDMAChannel),
- VMSTATE_INT32(request, PXA2xxDMAChannel),
- VMSTATE_END_OF_LIST(),
- },
-};
-
-static VMStateDescription vmstate_pxa2xx_dma = {
- .name = "pxa2xx_dma",
- .version_id = 1,
- .minimum_version_id = 0,
- .minimum_version_id_old = 0,
- .fields = (VMStateField[]) {
- VMSTATE_UNUSED_TEST(is_version_0, 4),
- VMSTATE_UINT32(stopintr, PXA2xxDMAState),
- VMSTATE_UINT32(eorintr, PXA2xxDMAState),
- VMSTATE_UINT32(rasintr, PXA2xxDMAState),
- VMSTATE_UINT32(startintr, PXA2xxDMAState),
- VMSTATE_UINT32(endintr, PXA2xxDMAState),
- VMSTATE_UINT32(align, PXA2xxDMAState),
- VMSTATE_UINT32(pio, PXA2xxDMAState),
- VMSTATE_BUFFER(req, PXA2xxDMAState),
- VMSTATE_STRUCT_VARRAY_POINTER_INT32(chan, PXA2xxDMAState, channels,
- vmstate_pxa2xx_dma_chan, PXA2xxDMAChannel),
- VMSTATE_END_OF_LIST(),
- },
-};
-
-static Property pxa2xx_dma_properties[] = {
- DEFINE_PROP_INT32("channels", PXA2xxDMAState, channels, -1),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void pxa2xx_dma_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = pxa2xx_dma_init;
- dc->desc = "PXA2xx DMA controller";
- dc->vmsd = &vmstate_pxa2xx_dma;
- dc->props = pxa2xx_dma_properties;
-}
-
-static const TypeInfo pxa2xx_dma_info = {
- .name = "pxa2xx-dma",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(PXA2xxDMAState),
- .class_init = pxa2xx_dma_class_init,
-};
-
-static void pxa2xx_dma_register_types(void)
-{
- type_register_static(&pxa2xx_dma_info);
-}
-
-type_init(pxa2xx_dma_register_types)
+++ /dev/null
-/*
- * On-chip DMA controller framework.
- *
- * Copyright (C) 2008 Nokia Corporation
- * Written by Andrzej Zaborowski <andrew@openedhand.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 or
- * (at your option) version 3 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "qemu-common.h"
-#include "qemu/timer.h"
-#include "hw/arm/soc_dma.h"
-
-static void transfer_mem2mem(struct soc_dma_ch_s *ch)
-{
- memcpy(ch->paddr[0], ch->paddr[1], ch->bytes);
- ch->paddr[0] += ch->bytes;
- ch->paddr[1] += ch->bytes;
-}
-
-static void transfer_mem2fifo(struct soc_dma_ch_s *ch)
-{
- ch->io_fn[1](ch->io_opaque[1], ch->paddr[0], ch->bytes);
- ch->paddr[0] += ch->bytes;
-}
-
-static void transfer_fifo2mem(struct soc_dma_ch_s *ch)
-{
- ch->io_fn[0](ch->io_opaque[0], ch->paddr[1], ch->bytes);
- ch->paddr[1] += ch->bytes;
-}
-
-/* This is further optimisable but isn't very important because often
- * DMA peripherals forbid this kind of transfers and even when they don't,
- * oprating systems may not need to use them. */
-static void *fifo_buf;
-static int fifo_size;
-static void transfer_fifo2fifo(struct soc_dma_ch_s *ch)
-{
- if (ch->bytes > fifo_size)
- fifo_buf = g_realloc(fifo_buf, fifo_size = ch->bytes);
-
- /* Implement as transfer_fifo2linear + transfer_linear2fifo. */
- ch->io_fn[0](ch->io_opaque[0], fifo_buf, ch->bytes);
- ch->io_fn[1](ch->io_opaque[1], fifo_buf, ch->bytes);
-}
-
-struct dma_s {
- struct soc_dma_s soc;
- int chnum;
- uint64_t ch_enable_mask;
- int64_t channel_freq;
- int enabled_count;
-
- struct memmap_entry_s {
- enum soc_dma_port_type type;
- hwaddr addr;
- union {
- struct {
- void *opaque;
- soc_dma_io_t fn;
- int out;
- } fifo;
- struct {
- void *base;
- size_t size;
- } mem;
- } u;
- } *memmap;
- int memmap_size;
-
- struct soc_dma_ch_s ch[0];
-};
-
-static void soc_dma_ch_schedule(struct soc_dma_ch_s *ch, int delay_bytes)
-{
- int64_t now = qemu_get_clock_ns(vm_clock);
- struct dma_s *dma = (struct dma_s *) ch->dma;
-
- qemu_mod_timer(ch->timer, now + delay_bytes / dma->channel_freq);
-}
-
-static void soc_dma_ch_run(void *opaque)
-{
- struct soc_dma_ch_s *ch = (struct soc_dma_ch_s *) opaque;
-
- ch->running = 1;
- ch->dma->setup_fn(ch);
- ch->transfer_fn(ch);
- ch->running = 0;
-
- if (ch->enable)
- soc_dma_ch_schedule(ch, ch->bytes);
- ch->bytes = 0;
-}
-
-static inline struct memmap_entry_s *soc_dma_lookup(struct dma_s *dma,
- hwaddr addr)
-{
- struct memmap_entry_s *lo;
- int hi;
-
- lo = dma->memmap;
- hi = dma->memmap_size;
-
- while (hi > 1) {
- hi /= 2;
- if (lo[hi].addr <= addr)
- lo += hi;
- }
-
- return lo;
-}
-
-static inline enum soc_dma_port_type soc_dma_ch_update_type(
- struct soc_dma_ch_s *ch, int port)
-{
- struct dma_s *dma = (struct dma_s *) ch->dma;
- struct memmap_entry_s *entry = soc_dma_lookup(dma, ch->vaddr[port]);
-
- if (entry->type == soc_dma_port_fifo) {
- while (entry < dma->memmap + dma->memmap_size &&
- entry->u.fifo.out != port)
- entry ++;
- if (entry->addr != ch->vaddr[port] || entry->u.fifo.out != port)
- return soc_dma_port_other;
-
- if (ch->type[port] != soc_dma_access_const)
- return soc_dma_port_other;
-
- ch->io_fn[port] = entry->u.fifo.fn;
- ch->io_opaque[port] = entry->u.fifo.opaque;
- return soc_dma_port_fifo;
- } else if (entry->type == soc_dma_port_mem) {
- if (entry->addr > ch->vaddr[port] ||
- entry->addr + entry->u.mem.size <= ch->vaddr[port])
- return soc_dma_port_other;
-
- /* TODO: support constant memory address for source port as used for
- * drawing solid rectangles by PalmOS(R). */
- if (ch->type[port] != soc_dma_access_const)
- return soc_dma_port_other;
-
- ch->paddr[port] = (uint8_t *) entry->u.mem.base +
- (ch->vaddr[port] - entry->addr);
- /* TODO: save bytes left to the end of the mapping somewhere so we
- * can check we're not reading beyond it. */
- return soc_dma_port_mem;
- } else
- return soc_dma_port_other;
-}
-
-void soc_dma_ch_update(struct soc_dma_ch_s *ch)
-{
- enum soc_dma_port_type src, dst;
-
- src = soc_dma_ch_update_type(ch, 0);
- if (src == soc_dma_port_other) {
- ch->update = 0;
- ch->transfer_fn = ch->dma->transfer_fn;
- return;
- }
- dst = soc_dma_ch_update_type(ch, 1);
-
- /* TODO: use src and dst as array indices. */
- if (src == soc_dma_port_mem && dst == soc_dma_port_mem)
- ch->transfer_fn = transfer_mem2mem;
- else if (src == soc_dma_port_mem && dst == soc_dma_port_fifo)
- ch->transfer_fn = transfer_mem2fifo;
- else if (src == soc_dma_port_fifo && dst == soc_dma_port_mem)
- ch->transfer_fn = transfer_fifo2mem;
- else if (src == soc_dma_port_fifo && dst == soc_dma_port_fifo)
- ch->transfer_fn = transfer_fifo2fifo;
- else
- ch->transfer_fn = ch->dma->transfer_fn;
-
- ch->update = (dst != soc_dma_port_other);
-}
-
-static void soc_dma_ch_freq_update(struct dma_s *s)
-{
- if (s->enabled_count)
- /* We completely ignore channel priorities and stuff */
- s->channel_freq = s->soc.freq / s->enabled_count;
- else {
- /* TODO: Signal that we want to disable the functional clock and let
- * the platform code decide what to do with it, i.e. check that
- * auto-idle is enabled in the clock controller and if we are stopping
- * the clock, do the same with any parent clocks that had only one
- * user keeping them on and auto-idle enabled. */
- }
-}
-
-void soc_dma_set_request(struct soc_dma_ch_s *ch, int level)
-{
- struct dma_s *dma = (struct dma_s *) ch->dma;
-
- dma->enabled_count += level - ch->enable;
-
- if (level)
- dma->ch_enable_mask |= 1 << ch->num;
- else
- dma->ch_enable_mask &= ~(1 << ch->num);
-
- if (level != ch->enable) {
- soc_dma_ch_freq_update(dma);
- ch->enable = level;
-
- if (!ch->enable)
- qemu_del_timer(ch->timer);
- else if (!ch->running)
- soc_dma_ch_run(ch);
- else
- soc_dma_ch_schedule(ch, 1);
- }
-}
-
-void soc_dma_reset(struct soc_dma_s *soc)
-{
- struct dma_s *s = (struct dma_s *) soc;
-
- s->soc.drqbmp = 0;
- s->ch_enable_mask = 0;
- s->enabled_count = 0;
- soc_dma_ch_freq_update(s);
-}
-
-/* TODO: take a functional-clock argument */
-struct soc_dma_s *soc_dma_init(int n)
-{
- int i;
- struct dma_s *s = g_malloc0(sizeof(*s) + n * sizeof(*s->ch));
-
- s->chnum = n;
- s->soc.ch = s->ch;
- for (i = 0; i < n; i ++) {
- s->ch[i].dma = &s->soc;
- s->ch[i].num = i;
- s->ch[i].timer = qemu_new_timer_ns(vm_clock, soc_dma_ch_run, &s->ch[i]);
- }
-
- soc_dma_reset(&s->soc);
- fifo_size = 0;
-
- return &s->soc;
-}
-
-void soc_dma_port_add_fifo(struct soc_dma_s *soc, hwaddr virt_base,
- soc_dma_io_t fn, void *opaque, int out)
-{
- struct memmap_entry_s *entry;
- struct dma_s *dma = (struct dma_s *) soc;
-
- dma->memmap = g_realloc(dma->memmap, sizeof(*entry) *
- (dma->memmap_size + 1));
- entry = soc_dma_lookup(dma, virt_base);
-
- if (dma->memmap_size) {
- if (entry->type == soc_dma_port_mem) {
- if (entry->addr <= virt_base &&
- entry->addr + entry->u.mem.size > virt_base) {
- fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx
- " collides with RAM region at " TARGET_FMT_lx
- "-" TARGET_FMT_lx "\n", __FUNCTION__,
- (target_ulong) virt_base,
- (target_ulong) entry->addr, (target_ulong)
- (entry->addr + entry->u.mem.size));
- exit(-1);
- }
-
- if (entry->addr <= virt_base)
- entry ++;
- } else
- while (entry < dma->memmap + dma->memmap_size &&
- entry->addr <= virt_base) {
- if (entry->addr == virt_base && entry->u.fifo.out == out) {
- fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx
- " collides FIFO at " TARGET_FMT_lx "\n",
- __FUNCTION__, (target_ulong) virt_base,
- (target_ulong) entry->addr);
- exit(-1);
- }
-
- entry ++;
- }
-
- memmove(entry + 1, entry,
- (uint8_t *) (dma->memmap + dma->memmap_size ++) -
- (uint8_t *) entry);
- } else
- dma->memmap_size ++;
-
- entry->addr = virt_base;
- entry->type = soc_dma_port_fifo;
- entry->u.fifo.fn = fn;
- entry->u.fifo.opaque = opaque;
- entry->u.fifo.out = out;
-}
-
-void soc_dma_port_add_mem(struct soc_dma_s *soc, uint8_t *phys_base,
- hwaddr virt_base, size_t size)
-{
- struct memmap_entry_s *entry;
- struct dma_s *dma = (struct dma_s *) soc;
-
- dma->memmap = g_realloc(dma->memmap, sizeof(*entry) *
- (dma->memmap_size + 1));
- entry = soc_dma_lookup(dma, virt_base);
-
- if (dma->memmap_size) {
- if (entry->type == soc_dma_port_mem) {
- if ((entry->addr >= virt_base && entry->addr < virt_base + size) ||
- (entry->addr <= virt_base &&
- entry->addr + entry->u.mem.size > virt_base)) {
- fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx
- " collides with RAM region at " TARGET_FMT_lx
- "-" TARGET_FMT_lx "\n", __FUNCTION__,
- (target_ulong) virt_base,
- (target_ulong) (virt_base + size),
- (target_ulong) entry->addr, (target_ulong)
- (entry->addr + entry->u.mem.size));
- exit(-1);
- }
-
- if (entry->addr <= virt_base)
- entry ++;
- } else {
- if (entry->addr >= virt_base &&
- entry->addr < virt_base + size) {
- fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx
- " collides with FIFO at " TARGET_FMT_lx
- "\n", __FUNCTION__,
- (target_ulong) virt_base,
- (target_ulong) (virt_base + size),
- (target_ulong) entry->addr);
- exit(-1);
- }
-
- while (entry < dma->memmap + dma->memmap_size &&
- entry->addr <= virt_base)
- entry ++;
- }
-
- memmove(entry + 1, entry,
- (uint8_t *) (dma->memmap + dma->memmap_size ++) -
- (uint8_t *) entry);
- } else
- dma->memmap_size ++;
-
- entry->addr = virt_base;
- entry->type = soc_dma_port_mem;
- entry->u.mem.base = phys_base;
- entry->u.mem.size = size;
-}
-
-/* TODO: port removal for ports like PCMCIA memory */
-obj-y = sun4m_iommu.o slavio_intctl.o
-obj-y += slavio_misc.o sparc32_dma.o
+obj-y = slavio_intctl.o
+obj-y += slavio_misc.o
obj-y += eccmemctl.o sbi.o sun4c_intctl.o
# GRLIB
+++ /dev/null
-/*
- * QEMU Sparc32 DMA controller emulation
- *
- * Copyright (c) 2006 Fabrice Bellard
- *
- * Modifications:
- * 2010-Feb-14 Artyom Tarasenko : reworked irq generation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "hw/hw.h"
-#include "hw/sparc/sparc32_dma.h"
-#include "hw/sparc/sun4m.h"
-#include "hw/sysbus.h"
-#include "trace.h"
-
-/*
- * This is the DMA controller part of chip STP2000 (Master I/O), also
- * produced as NCR89C100. See
- * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
- * and
- * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/DMA2.txt
- */
-
-#define DMA_REGS 4
-#define DMA_SIZE (4 * sizeof(uint32_t))
-/* We need the mask, because one instance of the device is not page
- aligned (ledma, start address 0x0010) */
-#define DMA_MASK (DMA_SIZE - 1)
-/* OBP says 0x20 bytes for ledma, the extras are aliased to espdma */
-#define DMA_ETH_SIZE (8 * sizeof(uint32_t))
-#define DMA_MAX_REG_OFFSET (2 * DMA_SIZE - 1)
-
-#define DMA_VER 0xa0000000
-#define DMA_INTR 1
-#define DMA_INTREN 0x10
-#define DMA_WRITE_MEM 0x100
-#define DMA_EN 0x200
-#define DMA_LOADED 0x04000000
-#define DMA_DRAIN_FIFO 0x40
-#define DMA_RESET 0x80
-
-/* XXX SCSI and ethernet should have different read-only bit masks */
-#define DMA_CSR_RO_MASK 0xfe000007
-
-typedef struct DMAState DMAState;
-
-struct DMAState {
- SysBusDevice busdev;
- MemoryRegion iomem;
- uint32_t dmaregs[DMA_REGS];
- qemu_irq irq;
- void *iommu;
- qemu_irq gpio[2];
- uint32_t is_ledma;
-};
-
-enum {
- GPIO_RESET = 0,
- GPIO_DMA,
-};
-
-/* Note: on sparc, the lance 16 bit bus is swapped */
-void ledma_memory_read(void *opaque, hwaddr addr,
- uint8_t *buf, int len, int do_bswap)
-{
- DMAState *s = opaque;
- int i;
-
- addr |= s->dmaregs[3];
- trace_ledma_memory_read(addr);
- if (do_bswap) {
- sparc_iommu_memory_read(s->iommu, addr, buf, len);
- } else {
- addr &= ~1;
- len &= ~1;
- sparc_iommu_memory_read(s->iommu, addr, buf, len);
- for(i = 0; i < len; i += 2) {
- bswap16s((uint16_t *)(buf + i));
- }
- }
-}
-
-void ledma_memory_write(void *opaque, hwaddr addr,
- uint8_t *buf, int len, int do_bswap)
-{
- DMAState *s = opaque;
- int l, i;
- uint16_t tmp_buf[32];
-
- addr |= s->dmaregs[3];
- trace_ledma_memory_write(addr);
- if (do_bswap) {
- sparc_iommu_memory_write(s->iommu, addr, buf, len);
- } else {
- addr &= ~1;
- len &= ~1;
- while (len > 0) {
- l = len;
- if (l > sizeof(tmp_buf))
- l = sizeof(tmp_buf);
- for(i = 0; i < l; i += 2) {
- tmp_buf[i >> 1] = bswap16(*(uint16_t *)(buf + i));
- }
- sparc_iommu_memory_write(s->iommu, addr, (uint8_t *)tmp_buf, l);
- len -= l;
- buf += l;
- addr += l;
- }
- }
-}
-
-static void dma_set_irq(void *opaque, int irq, int level)
-{
- DMAState *s = opaque;
- if (level) {
- s->dmaregs[0] |= DMA_INTR;
- if (s->dmaregs[0] & DMA_INTREN) {
- trace_sparc32_dma_set_irq_raise();
- qemu_irq_raise(s->irq);
- }
- } else {
- if (s->dmaregs[0] & DMA_INTR) {
- s->dmaregs[0] &= ~DMA_INTR;
- if (s->dmaregs[0] & DMA_INTREN) {
- trace_sparc32_dma_set_irq_lower();
- qemu_irq_lower(s->irq);
- }
- }
- }
-}
-
-void espdma_memory_read(void *opaque, uint8_t *buf, int len)
-{
- DMAState *s = opaque;
-
- trace_espdma_memory_read(s->dmaregs[1]);
- sparc_iommu_memory_read(s->iommu, s->dmaregs[1], buf, len);
- s->dmaregs[1] += len;
-}
-
-void espdma_memory_write(void *opaque, uint8_t *buf, int len)
-{
- DMAState *s = opaque;
-
- trace_espdma_memory_write(s->dmaregs[1]);
- sparc_iommu_memory_write(s->iommu, s->dmaregs[1], buf, len);
- s->dmaregs[1] += len;
-}
-
-static uint64_t dma_mem_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- DMAState *s = opaque;
- uint32_t saddr;
-
- if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) {
- /* aliased to espdma, but we can't get there from here */
- /* buggy driver if using undocumented behavior, just return 0 */
- trace_sparc32_dma_mem_readl(addr, 0);
- return 0;
- }
- saddr = (addr & DMA_MASK) >> 2;
- trace_sparc32_dma_mem_readl(addr, s->dmaregs[saddr]);
- return s->dmaregs[saddr];
-}
-
-static void dma_mem_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- DMAState *s = opaque;
- uint32_t saddr;
-
- if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) {
- /* aliased to espdma, but we can't get there from here */
- trace_sparc32_dma_mem_writel(addr, 0, val);
- return;
- }
- saddr = (addr & DMA_MASK) >> 2;
- trace_sparc32_dma_mem_writel(addr, s->dmaregs[saddr], val);
- switch (saddr) {
- case 0:
- if (val & DMA_INTREN) {
- if (s->dmaregs[0] & DMA_INTR) {
- trace_sparc32_dma_set_irq_raise();
- qemu_irq_raise(s->irq);
- }
- } else {
- if (s->dmaregs[0] & (DMA_INTR | DMA_INTREN)) {
- trace_sparc32_dma_set_irq_lower();
- qemu_irq_lower(s->irq);
- }
- }
- if (val & DMA_RESET) {
- qemu_irq_raise(s->gpio[GPIO_RESET]);
- qemu_irq_lower(s->gpio[GPIO_RESET]);
- } else if (val & DMA_DRAIN_FIFO) {
- val &= ~DMA_DRAIN_FIFO;
- } else if (val == 0)
- val = DMA_DRAIN_FIFO;
-
- if (val & DMA_EN && !(s->dmaregs[0] & DMA_EN)) {
- trace_sparc32_dma_enable_raise();
- qemu_irq_raise(s->gpio[GPIO_DMA]);
- } else if (!(val & DMA_EN) && !!(s->dmaregs[0] & DMA_EN)) {
- trace_sparc32_dma_enable_lower();
- qemu_irq_lower(s->gpio[GPIO_DMA]);
- }
-
- val &= ~DMA_CSR_RO_MASK;
- val |= DMA_VER;
- s->dmaregs[0] = (s->dmaregs[0] & DMA_CSR_RO_MASK) | val;
- break;
- case 1:
- s->dmaregs[0] |= DMA_LOADED;
- /* fall through */
- default:
- s->dmaregs[saddr] = val;
- break;
- }
-}
-
-static const MemoryRegionOps dma_mem_ops = {
- .read = dma_mem_read,
- .write = dma_mem_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
-};
-
-static void dma_reset(DeviceState *d)
-{
- DMAState *s = container_of(d, DMAState, busdev.qdev);
-
- memset(s->dmaregs, 0, DMA_SIZE);
- s->dmaregs[0] = DMA_VER;
-}
-
-static const VMStateDescription vmstate_dma = {
- .name ="sparc32_dma",
- .version_id = 2,
- .minimum_version_id = 2,
- .minimum_version_id_old = 2,
- .fields = (VMStateField []) {
- VMSTATE_UINT32_ARRAY(dmaregs, DMAState, DMA_REGS),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static int sparc32_dma_init1(SysBusDevice *dev)
-{
- DMAState *s = FROM_SYSBUS(DMAState, dev);
- int reg_size;
-
- sysbus_init_irq(dev, &s->irq);
-
- reg_size = s->is_ledma ? DMA_ETH_SIZE : DMA_SIZE;
- memory_region_init_io(&s->iomem, &dma_mem_ops, s, "dma", reg_size);
- sysbus_init_mmio(dev, &s->iomem);
-
- qdev_init_gpio_in(&dev->qdev, dma_set_irq, 1);
- qdev_init_gpio_out(&dev->qdev, s->gpio, 2);
-
- return 0;
-}
-
-static Property sparc32_dma_properties[] = {
- DEFINE_PROP_PTR("iommu_opaque", DMAState, iommu),
- DEFINE_PROP_UINT32("is_ledma", DMAState, is_ledma, 0),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void sparc32_dma_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = sparc32_dma_init1;
- dc->reset = dma_reset;
- dc->vmsd = &vmstate_dma;
- dc->props = sparc32_dma_properties;
-}
-
-static const TypeInfo sparc32_dma_info = {
- .name = "sparc32_dma",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(DMAState),
- .class_init = sparc32_dma_class_init,
-};
-
-static void sparc32_dma_register_types(void)
-{
- type_register_static(&sparc32_dma_info);
-}
-
-type_init(sparc32_dma_register_types)
+++ /dev/null
-/*
- * QEMU Sun4m iommu emulation
- *
- * Copyright (c) 2003-2005 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "hw/sparc/sun4m.h"
-#include "hw/sysbus.h"
-#include "trace.h"
-
-/*
- * I/O MMU used by Sun4m systems
- *
- * Chipset docs:
- * "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01,
- * http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf
- */
-
-#define IOMMU_NREGS (4*4096/4)
-#define IOMMU_CTRL (0x0000 >> 2)
-#define IOMMU_CTRL_IMPL 0xf0000000 /* Implementation */
-#define IOMMU_CTRL_VERS 0x0f000000 /* Version */
-#define IOMMU_CTRL_RNGE 0x0000001c /* Mapping RANGE */
-#define IOMMU_RNGE_16MB 0x00000000 /* 0xff000000 -> 0xffffffff */
-#define IOMMU_RNGE_32MB 0x00000004 /* 0xfe000000 -> 0xffffffff */
-#define IOMMU_RNGE_64MB 0x00000008 /* 0xfc000000 -> 0xffffffff */
-#define IOMMU_RNGE_128MB 0x0000000c /* 0xf8000000 -> 0xffffffff */
-#define IOMMU_RNGE_256MB 0x00000010 /* 0xf0000000 -> 0xffffffff */
-#define IOMMU_RNGE_512MB 0x00000014 /* 0xe0000000 -> 0xffffffff */
-#define IOMMU_RNGE_1GB 0x00000018 /* 0xc0000000 -> 0xffffffff */
-#define IOMMU_RNGE_2GB 0x0000001c /* 0x80000000 -> 0xffffffff */
-#define IOMMU_CTRL_ENAB 0x00000001 /* IOMMU Enable */
-#define IOMMU_CTRL_MASK 0x0000001d
-
-#define IOMMU_BASE (0x0004 >> 2)
-#define IOMMU_BASE_MASK 0x07fffc00
-
-#define IOMMU_TLBFLUSH (0x0014 >> 2)
-#define IOMMU_TLBFLUSH_MASK 0xffffffff
-
-#define IOMMU_PGFLUSH (0x0018 >> 2)
-#define IOMMU_PGFLUSH_MASK 0xffffffff
-
-#define IOMMU_AFSR (0x1000 >> 2)
-#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */
-#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after
- transaction */
-#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than
- 12.8 us. */
-#define IOMMU_AFSR_BE 0x10000000 /* Write access received error
- acknowledge */
-#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */
-#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */
-#define IOMMU_AFSR_RESV 0x00800000 /* Reserved, forced to 0x8 by
- hardware */
-#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */
-#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */
-#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */
-#define IOMMU_AFSR_MASK 0xff0fffff
-
-#define IOMMU_AFAR (0x1004 >> 2)
-
-#define IOMMU_AER (0x1008 >> 2) /* Arbiter Enable Register */
-#define IOMMU_AER_EN_P0_ARB 0x00000001 /* MBus master 0x8 (Always 1) */
-#define IOMMU_AER_EN_P1_ARB 0x00000002 /* MBus master 0x9 */
-#define IOMMU_AER_EN_P2_ARB 0x00000004 /* MBus master 0xa */
-#define IOMMU_AER_EN_P3_ARB 0x00000008 /* MBus master 0xb */
-#define IOMMU_AER_EN_0 0x00010000 /* SBus slot 0 */
-#define IOMMU_AER_EN_1 0x00020000 /* SBus slot 1 */
-#define IOMMU_AER_EN_2 0x00040000 /* SBus slot 2 */
-#define IOMMU_AER_EN_3 0x00080000 /* SBus slot 3 */
-#define IOMMU_AER_EN_F 0x00100000 /* SBus on-board */
-#define IOMMU_AER_SBW 0x80000000 /* S-to-M asynchronous writes */
-#define IOMMU_AER_MASK 0x801f000f
-
-#define IOMMU_SBCFG0 (0x1010 >> 2) /* SBUS configration per-slot */
-#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */
-#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */
-#define IOMMU_SBCFG3 (0x101c >> 2) /* SBUS configration per-slot */
-#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when
- bypass enabled */
-#define IOMMU_SBCFG_BA16 0x00000004 /* Slave supports 16 byte bursts */
-#define IOMMU_SBCFG_BA8 0x00000002 /* Slave supports 8 byte bursts */
-#define IOMMU_SBCFG_BYPASS 0x00000001 /* Bypass IOMMU, treat all addresses
- produced by this device as pure
- physical. */
-#define IOMMU_SBCFG_MASK 0x00010003
-
-#define IOMMU_ARBEN (0x2000 >> 2) /* SBUS arbitration enable */
-#define IOMMU_ARBEN_MASK 0x001f0000
-#define IOMMU_MID 0x00000008
-
-#define IOMMU_MASK_ID (0x3018 >> 2) /* Mask ID */
-#define IOMMU_MASK_ID_MASK 0x00ffffff
-
-#define IOMMU_MSII_MASK 0x26000000 /* microSPARC II mask number */
-#define IOMMU_TS_MASK 0x23000000 /* turboSPARC mask number */
-
-/* The format of an iopte in the page tables */
-#define IOPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */
-#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or
- Viking/MXCC) */
-#define IOPTE_WRITE 0x00000004 /* Writable */
-#define IOPTE_VALID 0x00000002 /* IOPTE is valid */
-#define IOPTE_WAZ 0x00000001 /* Write as zeros */
-
-#define IOMMU_PAGE_SHIFT 12
-#define IOMMU_PAGE_SIZE (1 << IOMMU_PAGE_SHIFT)
-#define IOMMU_PAGE_MASK ~(IOMMU_PAGE_SIZE - 1)
-
-typedef struct IOMMUState {
- SysBusDevice busdev;
- MemoryRegion iomem;
- uint32_t regs[IOMMU_NREGS];
- hwaddr iostart;
- qemu_irq irq;
- uint32_t version;
-} IOMMUState;
-
-static uint64_t iommu_mem_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- IOMMUState *s = opaque;
- hwaddr saddr;
- uint32_t ret;
-
- saddr = addr >> 2;
- switch (saddr) {
- default:
- ret = s->regs[saddr];
- break;
- case IOMMU_AFAR:
- case IOMMU_AFSR:
- ret = s->regs[saddr];
- qemu_irq_lower(s->irq);
- break;
- }
- trace_sun4m_iommu_mem_readl(saddr, ret);
- return ret;
-}
-
-static void iommu_mem_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- IOMMUState *s = opaque;
- hwaddr saddr;
-
- saddr = addr >> 2;
- trace_sun4m_iommu_mem_writel(saddr, val);
- switch (saddr) {
- case IOMMU_CTRL:
- switch (val & IOMMU_CTRL_RNGE) {
- case IOMMU_RNGE_16MB:
- s->iostart = 0xffffffffff000000ULL;
- break;
- case IOMMU_RNGE_32MB:
- s->iostart = 0xfffffffffe000000ULL;
- break;
- case IOMMU_RNGE_64MB:
- s->iostart = 0xfffffffffc000000ULL;
- break;
- case IOMMU_RNGE_128MB:
- s->iostart = 0xfffffffff8000000ULL;
- break;
- case IOMMU_RNGE_256MB:
- s->iostart = 0xfffffffff0000000ULL;
- break;
- case IOMMU_RNGE_512MB:
- s->iostart = 0xffffffffe0000000ULL;
- break;
- case IOMMU_RNGE_1GB:
- s->iostart = 0xffffffffc0000000ULL;
- break;
- default:
- case IOMMU_RNGE_2GB:
- s->iostart = 0xffffffff80000000ULL;
- break;
- }
- trace_sun4m_iommu_mem_writel_ctrl(s->iostart);
- s->regs[saddr] = ((val & IOMMU_CTRL_MASK) | s->version);
- break;
- case IOMMU_BASE:
- s->regs[saddr] = val & IOMMU_BASE_MASK;
- break;
- case IOMMU_TLBFLUSH:
- trace_sun4m_iommu_mem_writel_tlbflush(val);
- s->regs[saddr] = val & IOMMU_TLBFLUSH_MASK;
- break;
- case IOMMU_PGFLUSH:
- trace_sun4m_iommu_mem_writel_pgflush(val);
- s->regs[saddr] = val & IOMMU_PGFLUSH_MASK;
- break;
- case IOMMU_AFAR:
- s->regs[saddr] = val;
- qemu_irq_lower(s->irq);
- break;
- case IOMMU_AER:
- s->regs[saddr] = (val & IOMMU_AER_MASK) | IOMMU_AER_EN_P0_ARB;
- break;
- case IOMMU_AFSR:
- s->regs[saddr] = (val & IOMMU_AFSR_MASK) | IOMMU_AFSR_RESV;
- qemu_irq_lower(s->irq);
- break;
- case IOMMU_SBCFG0:
- case IOMMU_SBCFG1:
- case IOMMU_SBCFG2:
- case IOMMU_SBCFG3:
- s->regs[saddr] = val & IOMMU_SBCFG_MASK;
- break;
- case IOMMU_ARBEN:
- // XXX implement SBus probing: fault when reading unmapped
- // addresses, fault cause and address stored to MMU/IOMMU
- s->regs[saddr] = (val & IOMMU_ARBEN_MASK) | IOMMU_MID;
- break;
- case IOMMU_MASK_ID:
- s->regs[saddr] |= val & IOMMU_MASK_ID_MASK;
- break;
- default:
- s->regs[saddr] = val;
- break;
- }
-}
-
-static const MemoryRegionOps iommu_mem_ops = {
- .read = iommu_mem_read,
- .write = iommu_mem_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
-};
-
-static uint32_t iommu_page_get_flags(IOMMUState *s, hwaddr addr)
-{
- uint32_t ret;
- hwaddr iopte;
- hwaddr pa = addr;
-
- iopte = s->regs[IOMMU_BASE] << 4;
- addr &= ~s->iostart;
- iopte += (addr >> (IOMMU_PAGE_SHIFT - 2)) & ~3;
- cpu_physical_memory_read(iopte, (uint8_t *)&ret, 4);
- tswap32s(&ret);
- trace_sun4m_iommu_page_get_flags(pa, iopte, ret);
- return ret;
-}
-
-static hwaddr iommu_translate_pa(hwaddr addr,
- uint32_t pte)
-{
- hwaddr pa;
-
- pa = ((pte & IOPTE_PAGE) << 4) + (addr & ~IOMMU_PAGE_MASK);
- trace_sun4m_iommu_translate_pa(addr, pa, pte);
- return pa;
-}
-
-static void iommu_bad_addr(IOMMUState *s, hwaddr addr,
- int is_write)
-{
- trace_sun4m_iommu_bad_addr(addr);
- s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | IOMMU_AFSR_RESV |
- IOMMU_AFSR_FAV;
- if (!is_write)
- s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
- s->regs[IOMMU_AFAR] = addr;
- qemu_irq_raise(s->irq);
-}
-
-void sparc_iommu_memory_rw(void *opaque, hwaddr addr,
- uint8_t *buf, int len, int is_write)
-{
- int l;
- uint32_t flags;
- hwaddr page, phys_addr;
-
- while (len > 0) {
- page = addr & IOMMU_PAGE_MASK;
- l = (page + IOMMU_PAGE_SIZE) - addr;
- if (l > len)
- l = len;
- flags = iommu_page_get_flags(opaque, page);
- if (!(flags & IOPTE_VALID)) {
- iommu_bad_addr(opaque, page, is_write);
- return;
- }
- phys_addr = iommu_translate_pa(addr, flags);
- if (is_write) {
- if (!(flags & IOPTE_WRITE)) {
- iommu_bad_addr(opaque, page, is_write);
- return;
- }
- cpu_physical_memory_write(phys_addr, buf, l);
- } else {
- cpu_physical_memory_read(phys_addr, buf, l);
- }
- len -= l;
- buf += l;
- addr += l;
- }
-}
-
-static const VMStateDescription vmstate_iommu = {
- .name ="iommu",
- .version_id = 2,
- .minimum_version_id = 2,
- .minimum_version_id_old = 2,
- .fields = (VMStateField []) {
- VMSTATE_UINT32_ARRAY(regs, IOMMUState, IOMMU_NREGS),
- VMSTATE_UINT64(iostart, IOMMUState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void iommu_reset(DeviceState *d)
-{
- IOMMUState *s = container_of(d, IOMMUState, busdev.qdev);
-
- memset(s->regs, 0, IOMMU_NREGS * 4);
- s->iostart = 0;
- s->regs[IOMMU_CTRL] = s->version;
- s->regs[IOMMU_ARBEN] = IOMMU_MID;
- s->regs[IOMMU_AFSR] = IOMMU_AFSR_RESV;
- s->regs[IOMMU_AER] = IOMMU_AER_EN_P0_ARB | IOMMU_AER_EN_P1_ARB;
- s->regs[IOMMU_MASK_ID] = IOMMU_TS_MASK;
-}
-
-static int iommu_init1(SysBusDevice *dev)
-{
- IOMMUState *s = FROM_SYSBUS(IOMMUState, dev);
-
- sysbus_init_irq(dev, &s->irq);
-
- memory_region_init_io(&s->iomem, &iommu_mem_ops, s, "iommu",
- IOMMU_NREGS * sizeof(uint32_t));
- sysbus_init_mmio(dev, &s->iomem);
-
- return 0;
-}
-
-static Property iommu_properties[] = {
- DEFINE_PROP_HEX32("version", IOMMUState, version, 0),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void iommu_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = iommu_init1;
- dc->reset = iommu_reset;
- dc->vmsd = &vmstate_iommu;
- dc->props = iommu_properties;
-}
-
-static const TypeInfo iommu_info = {
- .name = "iommu",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(IOMMUState),
- .class_init = iommu_class_init,
-};
-
-static void iommu_register_types(void)
-{
- type_register_static(&iommu_info);
-}
-
-type_init(iommu_register_types)
projects / qemu.git / commitdiff