tristate "NVIDIA Tegra Video Decoder Engine driver"
depends on ARCH_TEGRA || COMPILE_TEST
select DMA_SHARED_BUFFER
+ select IOMMU_IOVA if IOMMU_SUPPORT
select SRAM
help
Say Y here to enable support for the NVIDIA Tegra video decoder
# SPDX-License-Identifier: GPL-2.0
+tegra-vde-y := vde.o iommu.o
obj-$(CONFIG_TEGRA_VDE) += tegra-vde.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NVIDIA Tegra Video decoder driver
+ *
+ * Copyright (C) 2016-2019 GRATE-DRIVER project
+ */
+
+#include <linux/iommu.h>
+#include <linux/iova.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+#include <asm/dma-iommu.h>
+#endif
+
+#include "vde.h"
+
+int tegra_vde_iommu_map(struct tegra_vde *vde,
+ struct sg_table *sgt,
+ struct iova **iovap,
+ dma_addr_t *addrp,
+ size_t size)
+{
+ struct iova *iova;
+ unsigned long shift;
+ unsigned long end;
+ dma_addr_t addr;
+
+ end = vde->domain->geometry.aperture_end;
+ size = iova_align(&vde->iova, size);
+ shift = iova_shift(&vde->iova);
+
+ iova = alloc_iova(&vde->iova, size >> shift, end >> shift, true);
+ if (!iova)
+ return -ENOMEM;
+
+ addr = iova_dma_addr(&vde->iova, iova);
+
+ size = iommu_map_sg(vde->domain, addr, sgt->sgl, sgt->nents,
+ IOMMU_READ | IOMMU_WRITE);
+ if (!size) {
+ __free_iova(&vde->iova, iova);
+ return -ENXIO;
+ }
+
+ *iovap = iova;
+ *addrp = addr;
+
+ return 0;
+}
+
+void tegra_vde_iommu_unmap(struct tegra_vde *vde, struct iova *iova)
+{
+ unsigned long shift = iova_shift(&vde->iova);
+ unsigned long size = iova_size(iova) << shift;
+ dma_addr_t addr = iova_dma_addr(&vde->iova, iova);
+
+ iommu_unmap(vde->domain, addr, size);
+ __free_iova(&vde->iova, iova);
+}
+
+int tegra_vde_iommu_init(struct tegra_vde *vde)
+{
+ struct device *dev = vde->miscdev.parent;
+ struct iova *iova;
+ unsigned long order;
+ unsigned long shift;
+ int err;
+
+ vde->group = iommu_group_get(dev);
+ if (!vde->group)
+ return 0;
+
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+ if (dev->archdata.mapping) {
+ struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
+
+ arm_iommu_detach_device(dev);
+ arm_iommu_release_mapping(mapping);
+ }
+#endif
+ vde->domain = iommu_domain_alloc(&platform_bus_type);
+ if (!vde->domain) {
+ err = -ENOMEM;
+ goto put_group;
+ }
+
+ err = iova_cache_get();
+ if (err)
+ goto free_domain;
+
+ order = __ffs(vde->domain->pgsize_bitmap);
+ init_iova_domain(&vde->iova, 1UL << order, 0);
+
+ err = iommu_attach_group(vde->domain, vde->group);
+ if (err)
+ goto put_iova;
+
+ /*
+ * We're using some static addresses that are not accessible by VDE
+ * to trap invalid memory accesses.
+ */
+ shift = iova_shift(&vde->iova);
+ iova = reserve_iova(&vde->iova, 0x60000000 >> shift,
+ 0x70000000 >> shift);
+ if (!iova) {
+ err = -ENOMEM;
+ goto detach_group;
+ }
+
+ vde->iova_resv_static_addresses = iova;
+
+ /*
+ * BSEV's end-address wraps around due to integer overflow during
+ * of hardware context preparation if IOVA is allocated at the end
+ * of address space and VDE can't handle that. Hence simply reserve
+ * the last page to avoid the problem.
+ */
+ iova = reserve_iova(&vde->iova, 0xffffffff >> shift,
+ (0xffffffff >> shift) + 1);
+ if (!iova) {
+ err = -ENOMEM;
+ goto unreserve_iova;
+ }
+
+ vde->iova_resv_last_page = iova;
+
+ return 0;
+
+unreserve_iova:
+ __free_iova(&vde->iova, vde->iova_resv_static_addresses);
+detach_group:
+ iommu_detach_group(vde->domain, vde->group);
+put_iova:
+ put_iova_domain(&vde->iova);
+ iova_cache_put();
+free_domain:
+ iommu_domain_free(vde->domain);
+put_group:
+ iommu_group_put(vde->group);
+
+ return err;
+}
+
+void tegra_vde_iommu_deinit(struct tegra_vde *vde)
+{
+ if (vde->domain) {
+ __free_iova(&vde->iova, vde->iova_resv_last_page);
+ __free_iova(&vde->iova, vde->iova_resv_static_addresses);
+ iommu_detach_group(vde->domain, vde->group);
+ put_iova_domain(&vde->iova);
+ iova_cache_put();
+ iommu_domain_free(vde->domain);
+ iommu_group_put(vde->group);
+
+ vde->domain = NULL;
+ }
+}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * NVIDIA Tegra Video decoder driver
- *
- * Copyright (C) 2016-2017 Dmitry Osipenko <digetx@gmail.com>
- *
- */
-
-#include <linux/clk.h>
-#include <linux/dma-buf.h>
-#include <linux/genalloc.h>
-#include <linux/interrupt.h>
-#include <linux/iopoll.h>
-#include <linux/miscdevice.h>
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/reset.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-
-#include <soc/tegra/pmc.h>
-
-#include "uapi.h"
-
-#define ICMDQUE_WR 0x00
-#define CMDQUE_CONTROL 0x08
-#define INTR_STATUS 0x18
-#define BSE_INT_ENB 0x40
-#define BSE_CONFIG 0x44
-
-#define BSE_ICMDQUE_EMPTY BIT(3)
-#define BSE_DMA_BUSY BIT(23)
-
-struct video_frame {
- struct dma_buf_attachment *y_dmabuf_attachment;
- struct dma_buf_attachment *cb_dmabuf_attachment;
- struct dma_buf_attachment *cr_dmabuf_attachment;
- struct dma_buf_attachment *aux_dmabuf_attachment;
- struct sg_table *y_sgt;
- struct sg_table *cb_sgt;
- struct sg_table *cr_sgt;
- struct sg_table *aux_sgt;
- dma_addr_t y_addr;
- dma_addr_t cb_addr;
- dma_addr_t cr_addr;
- dma_addr_t aux_addr;
- u32 frame_num;
- u32 flags;
-};
-
-struct tegra_vde {
- void __iomem *sxe;
- void __iomem *bsev;
- void __iomem *mbe;
- void __iomem *ppe;
- void __iomem *mce;
- void __iomem *tfe;
- void __iomem *ppb;
- void __iomem *vdma;
- void __iomem *frameid;
- struct mutex lock;
- struct miscdevice miscdev;
- struct reset_control *rst;
- struct reset_control *rst_mc;
- struct gen_pool *iram_pool;
- struct completion decode_completion;
- struct clk *clk;
- dma_addr_t iram_lists_addr;
- u32 *iram;
-};
-
-static __maybe_unused char const *
-tegra_vde_reg_base_name(struct tegra_vde *vde, void __iomem *base)
-{
- if (vde->sxe == base)
- return "SXE";
-
- if (vde->bsev == base)
- return "BSEV";
-
- if (vde->mbe == base)
- return "MBE";
-
- if (vde->ppe == base)
- return "PPE";
-
- if (vde->mce == base)
- return "MCE";
-
- if (vde->tfe == base)
- return "TFE";
-
- if (vde->ppb == base)
- return "PPB";
-
- if (vde->vdma == base)
- return "VDMA";
-
- if (vde->frameid == base)
- return "FRAMEID";
-
- return "???";
-}
-
-#define CREATE_TRACE_POINTS
-#include "trace.h"
-
-static void tegra_vde_writel(struct tegra_vde *vde,
- u32 value, void __iomem *base, u32 offset)
-{
- trace_vde_writel(vde, base, offset, value);
-
- writel_relaxed(value, base + offset);
-}
-
-static u32 tegra_vde_readl(struct tegra_vde *vde,
- void __iomem *base, u32 offset)
-{
- u32 value = readl_relaxed(base + offset);
-
- trace_vde_readl(vde, base, offset, value);
-
- return value;
-}
-
-static void tegra_vde_set_bits(struct tegra_vde *vde,
- u32 mask, void __iomem *base, u32 offset)
-{
- u32 value = tegra_vde_readl(vde, base, offset);
-
- tegra_vde_writel(vde, value | mask, base, offset);
-}
-
-static int tegra_vde_wait_mbe(struct tegra_vde *vde)
-{
- u32 tmp;
-
- return readl_relaxed_poll_timeout(vde->mbe + 0x8C, tmp,
- (tmp >= 0x10), 1, 100);
-}
-
-static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
- unsigned int refs_nb,
- bool setup_refs)
-{
- u32 frame_idx_enb_mask = 0;
- u32 value;
- unsigned int frame_idx;
- unsigned int idx;
- int err;
-
- tegra_vde_writel(vde, 0xD0000000 | (0 << 23), vde->mbe, 0x80);
- tegra_vde_writel(vde, 0xD0200000 | (0 << 23), vde->mbe, 0x80);
-
- err = tegra_vde_wait_mbe(vde);
- if (err)
- return err;
-
- if (!setup_refs)
- return 0;
-
- for (idx = 0, frame_idx = 1; idx < refs_nb; idx++, frame_idx++) {
- tegra_vde_writel(vde, 0xD0000000 | (frame_idx << 23),
- vde->mbe, 0x80);
- tegra_vde_writel(vde, 0xD0200000 | (frame_idx << 23),
- vde->mbe, 0x80);
-
- frame_idx_enb_mask |= frame_idx << (6 * (idx % 4));
-
- if (idx % 4 == 3 || idx == refs_nb - 1) {
- value = 0xC0000000;
- value |= (idx >> 2) << 24;
- value |= frame_idx_enb_mask;
-
- tegra_vde_writel(vde, value, vde->mbe, 0x80);
-
- err = tegra_vde_wait_mbe(vde);
- if (err)
- return err;
-
- frame_idx_enb_mask = 0;
- }
- }
-
- return 0;
-}
-
-static void tegra_vde_mbe_set_0xa_reg(struct tegra_vde *vde, int reg, u32 val)
-{
- tegra_vde_writel(vde, 0xA0000000 | (reg << 24) | (val & 0xFFFF),
- vde->mbe, 0x80);
- tegra_vde_writel(vde, 0xA0000000 | ((reg + 1) << 24) | (val >> 16),
- vde->mbe, 0x80);
-}
-
-static int tegra_vde_wait_bsev(struct tegra_vde *vde, bool wait_dma)
-{
- struct device *dev = vde->miscdev.parent;
- u32 value;
- int err;
-
- err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
- !(value & BIT(2)), 1, 100);
- if (err) {
- dev_err(dev, "BSEV unknown bit timeout\n");
- return err;
- }
-
- err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
- (value & BSE_ICMDQUE_EMPTY), 1, 100);
- if (err) {
- dev_err(dev, "BSEV ICMDQUE flush timeout\n");
- return err;
- }
-
- if (!wait_dma)
- return 0;
-
- err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
- !(value & BSE_DMA_BUSY), 1, 100);
- if (err) {
- dev_err(dev, "BSEV DMA timeout\n");
- return err;
- }
-
- return 0;
-}
-
-static int tegra_vde_push_to_bsev_icmdqueue(struct tegra_vde *vde,
- u32 value, bool wait_dma)
-{
- tegra_vde_writel(vde, value, vde->bsev, ICMDQUE_WR);
-
- return tegra_vde_wait_bsev(vde, wait_dma);
-}
-
-static void tegra_vde_setup_frameid(struct tegra_vde *vde,
- struct video_frame *frame,
- unsigned int frameid,
- u32 mbs_width, u32 mbs_height)
-{
- u32 y_addr = frame ? frame->y_addr : 0x6CDEAD00;
- u32 cb_addr = frame ? frame->cb_addr : 0x6CDEAD00;
- u32 cr_addr = frame ? frame->cr_addr : 0x6CDEAD00;
- u32 value1 = frame ? ((mbs_width << 16) | mbs_height) : 0;
- u32 value2 = frame ? ((((mbs_width + 1) >> 1) << 6) | 1) : 0;
-
- tegra_vde_writel(vde, y_addr >> 8, vde->frameid, 0x000 + frameid * 4);
- tegra_vde_writel(vde, cb_addr >> 8, vde->frameid, 0x100 + frameid * 4);
- tegra_vde_writel(vde, cr_addr >> 8, vde->frameid, 0x180 + frameid * 4);
- tegra_vde_writel(vde, value1, vde->frameid, 0x080 + frameid * 4);
- tegra_vde_writel(vde, value2, vde->frameid, 0x280 + frameid * 4);
-}
-
-static void tegra_setup_frameidx(struct tegra_vde *vde,
- struct video_frame *frames,
- unsigned int frames_nb,
- u32 mbs_width, u32 mbs_height)
-{
- unsigned int idx;
-
- for (idx = 0; idx < frames_nb; idx++)
- tegra_vde_setup_frameid(vde, &frames[idx], idx,
- mbs_width, mbs_height);
-
- for (; idx < 17; idx++)
- tegra_vde_setup_frameid(vde, NULL, idx, 0, 0);
-}
-
-static void tegra_vde_setup_iram_entry(struct tegra_vde *vde,
- unsigned int table,
- unsigned int row,
- u32 value1, u32 value2)
-{
- u32 *iram_tables = vde->iram;
-
- trace_vde_setup_iram_entry(table, row, value1, value2);
-
- iram_tables[0x20 * table + row * 2] = value1;
- iram_tables[0x20 * table + row * 2 + 1] = value2;
-}
-
-static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
- struct video_frame *dpb_frames,
- unsigned int ref_frames_nb,
- unsigned int with_earlier_poc_nb)
-{
- struct video_frame *frame;
- u32 value, aux_addr;
- int with_later_poc_nb;
- unsigned int i, k;
-
- trace_vde_ref_l0(dpb_frames[0].frame_num);
-
- for (i = 0; i < 16; i++) {
- if (i < ref_frames_nb) {
- frame = &dpb_frames[i + 1];
-
- aux_addr = frame->aux_addr;
-
- value = (i + 1) << 26;
- value |= !(frame->flags & FLAG_B_FRAME) << 25;
- value |= 1 << 24;
- value |= frame->frame_num;
- } else {
- aux_addr = 0x6ADEAD00;
- value = 0;
- }
-
- tegra_vde_setup_iram_entry(vde, 0, i, value, aux_addr);
- tegra_vde_setup_iram_entry(vde, 1, i, value, aux_addr);
- tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
- tegra_vde_setup_iram_entry(vde, 3, i, value, aux_addr);
- }
-
- if (!(dpb_frames[0].flags & FLAG_B_FRAME))
- return;
-
- if (with_earlier_poc_nb >= ref_frames_nb)
- return;
-
- with_later_poc_nb = ref_frames_nb - with_earlier_poc_nb;
-
- trace_vde_ref_l1(with_later_poc_nb, with_earlier_poc_nb);
-
- for (i = 0, k = with_earlier_poc_nb; i < with_later_poc_nb; i++, k++) {
- frame = &dpb_frames[k + 1];
-
- aux_addr = frame->aux_addr;
-
- value = (k + 1) << 26;
- value |= !(frame->flags & FLAG_B_FRAME) << 25;
- value |= 1 << 24;
- value |= frame->frame_num;
-
- tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
- }
-
- for (k = 0; i < ref_frames_nb; i++, k++) {
- frame = &dpb_frames[k + 1];
-
- aux_addr = frame->aux_addr;
-
- value = (k + 1) << 26;
- value |= !(frame->flags & FLAG_B_FRAME) << 25;
- value |= 1 << 24;
- value |= frame->frame_num;
-
- tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
- }
-}
-
-static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
- struct tegra_vde_h264_decoder_ctx *ctx,
- struct video_frame *dpb_frames,
- dma_addr_t bitstream_data_addr,
- size_t bitstream_data_size,
- unsigned int macroblocks_nb)
-{
- struct device *dev = vde->miscdev.parent;
- u32 value;
- int err;
-
- tegra_vde_set_bits(vde, 0x000A, vde->sxe, 0xF0);
- tegra_vde_set_bits(vde, 0x000B, vde->bsev, CMDQUE_CONTROL);
- tegra_vde_set_bits(vde, 0x8002, vde->mbe, 0x50);
- tegra_vde_set_bits(vde, 0x000A, vde->mbe, 0xA0);
- tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x14);
- tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x28);
- tegra_vde_set_bits(vde, 0x0A00, vde->mce, 0x08);
- tegra_vde_set_bits(vde, 0x000A, vde->tfe, 0x00);
- tegra_vde_set_bits(vde, 0x0005, vde->vdma, 0x04);
-
- tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x1C);
- tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x00);
- tegra_vde_writel(vde, 0x00000007, vde->vdma, 0x04);
- tegra_vde_writel(vde, 0x00000007, vde->frameid, 0x200);
- tegra_vde_writel(vde, 0x00000005, vde->tfe, 0x04);
- tegra_vde_writel(vde, 0x00000000, vde->mbe, 0x84);
- tegra_vde_writel(vde, 0x00000010, vde->sxe, 0x08);
- tegra_vde_writel(vde, 0x00000150, vde->sxe, 0x54);
- tegra_vde_writel(vde, 0x0000054C, vde->sxe, 0x58);
- tegra_vde_writel(vde, 0x00000E34, vde->sxe, 0x5C);
- tegra_vde_writel(vde, 0x063C063C, vde->mce, 0x10);
- tegra_vde_writel(vde, 0x0003FC00, vde->bsev, INTR_STATUS);
- tegra_vde_writel(vde, 0x0000150D, vde->bsev, BSE_CONFIG);
- tegra_vde_writel(vde, 0x00000100, vde->bsev, BSE_INT_ENB);
- tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x98);
- tegra_vde_writel(vde, 0x00000060, vde->bsev, 0x9C);
-
- memset(vde->iram + 128, 0, macroblocks_nb / 2);
-
- tegra_setup_frameidx(vde, dpb_frames, ctx->dpb_frames_nb,
- ctx->pic_width_in_mbs, ctx->pic_height_in_mbs);
-
- tegra_vde_setup_iram_tables(vde, dpb_frames,
- ctx->dpb_frames_nb - 1,
- ctx->dpb_ref_frames_with_earlier_poc_nb);
-
- /*
- * The IRAM mapping is write-combine, ensure that CPU buffers have
- * been flushed at this point.
- */
- wmb();
-
- tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x8C);
- tegra_vde_writel(vde, bitstream_data_addr + bitstream_data_size,
- vde->bsev, 0x54);
-
- value = ctx->pic_width_in_mbs << 11 | ctx->pic_height_in_mbs << 3;
-
- tegra_vde_writel(vde, value, vde->bsev, 0x88);
-
- err = tegra_vde_wait_bsev(vde, false);
- if (err)
- return err;
-
- err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x800003FC, false);
- if (err)
- return err;
-
- value = 0x01500000;
- value |= ((vde->iram_lists_addr + 512) >> 2) & 0xFFFF;
-
- err = tegra_vde_push_to_bsev_icmdqueue(vde, value, true);
- if (err)
- return err;
-
- err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x840F054C, false);
- if (err)
- return err;
-
- err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x80000080, false);
- if (err)
- return err;
-
- value = 0x0E340000 | ((vde->iram_lists_addr >> 2) & 0xFFFF);
-
- err = tegra_vde_push_to_bsev_icmdqueue(vde, value, true);
- if (err)
- return err;
-
- value = 0x00800005;
- value |= ctx->pic_width_in_mbs << 11;
- value |= ctx->pic_height_in_mbs << 3;
-
- tegra_vde_writel(vde, value, vde->sxe, 0x10);
-
- value = !ctx->baseline_profile << 17;
- value |= ctx->level_idc << 13;
- value |= ctx->log2_max_pic_order_cnt_lsb << 7;
- value |= ctx->pic_order_cnt_type << 5;
- value |= ctx->log2_max_frame_num;
-
- tegra_vde_writel(vde, value, vde->sxe, 0x40);
-
- value = ctx->pic_init_qp << 25;
- value |= !!(ctx->deblocking_filter_control_present_flag) << 2;
- value |= !!ctx->pic_order_present_flag;
-
- tegra_vde_writel(vde, value, vde->sxe, 0x44);
-
- value = ctx->chroma_qp_index_offset;
- value |= ctx->num_ref_idx_l0_active_minus1 << 5;
- value |= ctx->num_ref_idx_l1_active_minus1 << 10;
- value |= !!ctx->constrained_intra_pred_flag << 15;
-
- tegra_vde_writel(vde, value, vde->sxe, 0x48);
-
- value = 0x0C000000;
- value |= !!(dpb_frames[0].flags & FLAG_B_FRAME) << 24;
-
- tegra_vde_writel(vde, value, vde->sxe, 0x4C);
-
- value = 0x03800000;
- value |= bitstream_data_size & GENMASK(19, 15);
-
- tegra_vde_writel(vde, value, vde->sxe, 0x68);
-
- tegra_vde_writel(vde, bitstream_data_addr, vde->sxe, 0x6C);
-
- value = 0x10000005;
- value |= ctx->pic_width_in_mbs << 11;
- value |= ctx->pic_height_in_mbs << 3;
-
- tegra_vde_writel(vde, value, vde->mbe, 0x80);
-
- value = 0x26800000;
- value |= ctx->level_idc << 4;
- value |= !ctx->baseline_profile << 1;
- value |= !!ctx->direct_8x8_inference_flag;
-
- tegra_vde_writel(vde, value, vde->mbe, 0x80);
-
- tegra_vde_writel(vde, 0xF4000001, vde->mbe, 0x80);
- tegra_vde_writel(vde, 0x20000000, vde->mbe, 0x80);
- tegra_vde_writel(vde, 0xF4000101, vde->mbe, 0x80);
-
- value = 0x20000000;
- value |= ctx->chroma_qp_index_offset << 8;
-
- tegra_vde_writel(vde, value, vde->mbe, 0x80);
-
- err = tegra_vde_setup_mbe_frame_idx(vde,
- ctx->dpb_frames_nb - 1,
- ctx->pic_order_cnt_type == 0);
- if (err) {
- dev_err(dev, "MBE frames setup failed %d\n", err);
- return err;
- }
-
- tegra_vde_mbe_set_0xa_reg(vde, 0, 0x000009FC);
- tegra_vde_mbe_set_0xa_reg(vde, 2, 0x61DEAD00);
- tegra_vde_mbe_set_0xa_reg(vde, 4, 0x62DEAD00);
- tegra_vde_mbe_set_0xa_reg(vde, 6, 0x63DEAD00);
- tegra_vde_mbe_set_0xa_reg(vde, 8, dpb_frames[0].aux_addr);
-
- value = 0xFC000000;
- value |= !!(dpb_frames[0].flags & FLAG_B_FRAME) << 2;
-
- if (!ctx->baseline_profile)
- value |= !!(dpb_frames[0].flags & FLAG_REFERENCE) << 1;
-
- tegra_vde_writel(vde, value, vde->mbe, 0x80);
-
- err = tegra_vde_wait_mbe(vde);
- if (err) {
- dev_err(dev, "MBE programming failed %d\n", err);
- return err;
- }
-
- return 0;
-}
-
-static void tegra_vde_decode_frame(struct tegra_vde *vde,
- unsigned int macroblocks_nb)
-{
- reinit_completion(&vde->decode_completion);
-
- tegra_vde_writel(vde, 0x00000001, vde->bsev, 0x8C);
- tegra_vde_writel(vde, 0x20000000 | (macroblocks_nb - 1),
- vde->sxe, 0x00);
-}
-
-static void tegra_vde_detach_and_put_dmabuf(struct dma_buf_attachment *a,
- struct sg_table *sgt,
- enum dma_data_direction dma_dir)
-{
- struct dma_buf *dmabuf = a->dmabuf;
-
- dma_buf_unmap_attachment(a, sgt, dma_dir);
- dma_buf_detach(dmabuf, a);
- dma_buf_put(dmabuf);
-}
-
-static int tegra_vde_attach_dmabuf(struct device *dev,
- int fd,
- unsigned long offset,
- size_t min_size,
- size_t align_size,
- struct dma_buf_attachment **a,
- dma_addr_t *addr,
- struct sg_table **s,
- size_t *size,
- enum dma_data_direction dma_dir)
-{
- struct dma_buf_attachment *attachment;
- struct dma_buf *dmabuf;
- struct sg_table *sgt;
- int err;
-
- dmabuf = dma_buf_get(fd);
- if (IS_ERR(dmabuf)) {
- dev_err(dev, "Invalid dmabuf FD\n");
- return PTR_ERR(dmabuf);
- }
-
- if (dmabuf->size & (align_size - 1)) {
- dev_err(dev, "Unaligned dmabuf 0x%zX, should be aligned to 0x%zX\n",
- dmabuf->size, align_size);
- return -EINVAL;
- }
-
- if ((u64)offset + min_size > dmabuf->size) {
- dev_err(dev, "Too small dmabuf size %zu @0x%lX, should be at least %zu\n",
- dmabuf->size, offset, min_size);
- return -EINVAL;
- }
-
- attachment = dma_buf_attach(dmabuf, dev);
- if (IS_ERR(attachment)) {
- dev_err(dev, "Failed to attach dmabuf\n");
- err = PTR_ERR(attachment);
- goto err_put;
- }
-
- sgt = dma_buf_map_attachment(attachment, dma_dir);
- if (IS_ERR(sgt)) {
- dev_err(dev, "Failed to get dmabufs sg_table\n");
- err = PTR_ERR(sgt);
- goto err_detach;
- }
-
- if (sgt->nents != 1) {
- dev_err(dev, "Sparse DMA region is unsupported\n");
- err = -EINVAL;
- goto err_unmap;
- }
-
- *addr = sg_dma_address(sgt->sgl) + offset;
- *a = attachment;
- *s = sgt;
-
- if (size)
- *size = dmabuf->size - offset;
-
- return 0;
-
-err_unmap:
- dma_buf_unmap_attachment(attachment, sgt, dma_dir);
-err_detach:
- dma_buf_detach(dmabuf, attachment);
-err_put:
- dma_buf_put(dmabuf);
-
- return err;
-}
-
-static int tegra_vde_attach_dmabufs_to_frame(struct device *dev,
- struct video_frame *frame,
- struct tegra_vde_h264_frame *src,
- enum dma_data_direction dma_dir,
- bool baseline_profile,
- size_t lsize, size_t csize)
-{
- int err;
-
- err = tegra_vde_attach_dmabuf(dev, src->y_fd,
- src->y_offset, lsize, SZ_256,
- &frame->y_dmabuf_attachment,
- &frame->y_addr,
- &frame->y_sgt,
- NULL, dma_dir);
- if (err)
- return err;
-
- err = tegra_vde_attach_dmabuf(dev, src->cb_fd,
- src->cb_offset, csize, SZ_256,
- &frame->cb_dmabuf_attachment,
- &frame->cb_addr,
- &frame->cb_sgt,
- NULL, dma_dir);
- if (err)
- goto err_release_y;
-
- err = tegra_vde_attach_dmabuf(dev, src->cr_fd,
- src->cr_offset, csize, SZ_256,
- &frame->cr_dmabuf_attachment,
- &frame->cr_addr,
- &frame->cr_sgt,
- NULL, dma_dir);
- if (err)
- goto err_release_cb;
-
- if (baseline_profile) {
- frame->aux_addr = 0x64DEAD00;
- return 0;
- }
-
- err = tegra_vde_attach_dmabuf(dev, src->aux_fd,
- src->aux_offset, csize, SZ_256,
- &frame->aux_dmabuf_attachment,
- &frame->aux_addr,
- &frame->aux_sgt,
- NULL, dma_dir);
- if (err)
- goto err_release_cr;
-
- return 0;
-
-err_release_cr:
- tegra_vde_detach_and_put_dmabuf(frame->cr_dmabuf_attachment,
- frame->cr_sgt, dma_dir);
-err_release_cb:
- tegra_vde_detach_and_put_dmabuf(frame->cb_dmabuf_attachment,
- frame->cb_sgt, dma_dir);
-err_release_y:
- tegra_vde_detach_and_put_dmabuf(frame->y_dmabuf_attachment,
- frame->y_sgt, dma_dir);
-
- return err;
-}
-
-static void tegra_vde_release_frame_dmabufs(struct video_frame *frame,
- enum dma_data_direction dma_dir,
- bool baseline_profile)
-{
- if (!baseline_profile)
- tegra_vde_detach_and_put_dmabuf(frame->aux_dmabuf_attachment,
- frame->aux_sgt, dma_dir);
-
- tegra_vde_detach_and_put_dmabuf(frame->cr_dmabuf_attachment,
- frame->cr_sgt, dma_dir);
-
- tegra_vde_detach_and_put_dmabuf(frame->cb_dmabuf_attachment,
- frame->cb_sgt, dma_dir);
-
- tegra_vde_detach_and_put_dmabuf(frame->y_dmabuf_attachment,
- frame->y_sgt, dma_dir);
-}
-
-static int tegra_vde_validate_frame(struct device *dev,
- struct tegra_vde_h264_frame *frame)
-{
- if (frame->frame_num > 0x7FFFFF) {
- dev_err(dev, "Bad frame_num %u\n", frame->frame_num);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int tegra_vde_validate_h264_ctx(struct device *dev,
- struct tegra_vde_h264_decoder_ctx *ctx)
-{
- if (ctx->dpb_frames_nb == 0 || ctx->dpb_frames_nb > 17) {
- dev_err(dev, "Bad DPB size %u\n", ctx->dpb_frames_nb);
- return -EINVAL;
- }
-
- if (ctx->level_idc > 15) {
- dev_err(dev, "Bad level value %u\n", ctx->level_idc);
- return -EINVAL;
- }
-
- if (ctx->pic_init_qp > 52) {
- dev_err(dev, "Bad pic_init_qp value %u\n", ctx->pic_init_qp);
- return -EINVAL;
- }
-
- if (ctx->log2_max_pic_order_cnt_lsb > 16) {
- dev_err(dev, "Bad log2_max_pic_order_cnt_lsb value %u\n",
- ctx->log2_max_pic_order_cnt_lsb);
- return -EINVAL;
- }
-
- if (ctx->log2_max_frame_num > 16) {
- dev_err(dev, "Bad log2_max_frame_num value %u\n",
- ctx->log2_max_frame_num);
- return -EINVAL;
- }
-
- if (ctx->chroma_qp_index_offset > 31) {
- dev_err(dev, "Bad chroma_qp_index_offset value %u\n",
- ctx->chroma_qp_index_offset);
- return -EINVAL;
- }
-
- if (ctx->pic_order_cnt_type > 2) {
- dev_err(dev, "Bad pic_order_cnt_type value %u\n",
- ctx->pic_order_cnt_type);
- return -EINVAL;
- }
-
- if (ctx->num_ref_idx_l0_active_minus1 > 15) {
- dev_err(dev, "Bad num_ref_idx_l0_active_minus1 value %u\n",
- ctx->num_ref_idx_l0_active_minus1);
- return -EINVAL;
- }
-
- if (ctx->num_ref_idx_l1_active_minus1 > 15) {
- dev_err(dev, "Bad num_ref_idx_l1_active_minus1 value %u\n",
- ctx->num_ref_idx_l1_active_minus1);
- return -EINVAL;
- }
-
- if (!ctx->pic_width_in_mbs || ctx->pic_width_in_mbs > 127) {
- dev_err(dev, "Bad pic_width_in_mbs value %u\n",
- ctx->pic_width_in_mbs);
- return -EINVAL;
- }
-
- if (!ctx->pic_height_in_mbs || ctx->pic_height_in_mbs > 127) {
- dev_err(dev, "Bad pic_height_in_mbs value %u\n",
- ctx->pic_height_in_mbs);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
- unsigned long vaddr)
-{
- struct device *dev = vde->miscdev.parent;
- struct tegra_vde_h264_decoder_ctx ctx;
- struct tegra_vde_h264_frame *frames;
- struct tegra_vde_h264_frame __user *frames_user;
- struct video_frame *dpb_frames;
- struct dma_buf_attachment *bitstream_data_dmabuf_attachment;
- struct sg_table *bitstream_sgt;
- enum dma_data_direction dma_dir;
- dma_addr_t bitstream_data_addr;
- dma_addr_t bsev_ptr;
- size_t lsize, csize;
- size_t bitstream_data_size;
- unsigned int macroblocks_nb;
- unsigned int read_bytes;
- unsigned int cstride;
- unsigned int i;
- long timeout;
- int ret, err;
-
- if (copy_from_user(&ctx, (void __user *)vaddr, sizeof(ctx)))
- return -EFAULT;
-
- ret = tegra_vde_validate_h264_ctx(dev, &ctx);
- if (ret)
- return ret;
-
- ret = tegra_vde_attach_dmabuf(dev, ctx.bitstream_data_fd,
- ctx.bitstream_data_offset,
- SZ_16K, SZ_16K,
- &bitstream_data_dmabuf_attachment,
- &bitstream_data_addr,
- &bitstream_sgt,
- &bitstream_data_size,
- DMA_TO_DEVICE);
- if (ret)
- return ret;
-
- frames = kmalloc_array(ctx.dpb_frames_nb, sizeof(*frames), GFP_KERNEL);
- if (!frames) {
- ret = -ENOMEM;
- goto release_bitstream_dmabuf;
- }
-
- dpb_frames = kcalloc(ctx.dpb_frames_nb, sizeof(*dpb_frames),
- GFP_KERNEL);
- if (!dpb_frames) {
- ret = -ENOMEM;
- goto free_frames;
- }
-
- macroblocks_nb = ctx.pic_width_in_mbs * ctx.pic_height_in_mbs;
- frames_user = u64_to_user_ptr(ctx.dpb_frames_ptr);
-
- if (copy_from_user(frames, frames_user,
- ctx.dpb_frames_nb * sizeof(*frames))) {
- ret = -EFAULT;
- goto free_dpb_frames;
- }
-
- cstride = ALIGN(ctx.pic_width_in_mbs * 8, 16);
- csize = cstride * ctx.pic_height_in_mbs * 8;
- lsize = macroblocks_nb * 256;
-
- for (i = 0; i < ctx.dpb_frames_nb; i++) {
- ret = tegra_vde_validate_frame(dev, &frames[i]);
- if (ret)
- goto release_dpb_frames;
-
- dpb_frames[i].flags = frames[i].flags;
- dpb_frames[i].frame_num = frames[i].frame_num;
-
- dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
- ret = tegra_vde_attach_dmabufs_to_frame(dev, &dpb_frames[i],
- &frames[i], dma_dir,
- ctx.baseline_profile,
- lsize, csize);
- if (ret)
- goto release_dpb_frames;
- }
-
- ret = mutex_lock_interruptible(&vde->lock);
- if (ret)
- goto release_dpb_frames;
-
- ret = pm_runtime_get_sync(dev);
- if (ret < 0)
- goto unlock;
-
- /*
- * We rely on the VDE registers reset value, otherwise VDE
- * causes bus lockup.
- */
- ret = reset_control_assert(vde->rst_mc);
- if (ret) {
- dev_err(dev, "DEC start: Failed to assert MC reset: %d\n",
- ret);
- goto put_runtime_pm;
- }
-
- ret = reset_control_reset(vde->rst);
- if (ret) {
- dev_err(dev, "DEC start: Failed to reset HW: %d\n", ret);
- goto put_runtime_pm;
- }
-
- ret = reset_control_deassert(vde->rst_mc);
- if (ret) {
- dev_err(dev, "DEC start: Failed to deassert MC reset: %d\n",
- ret);
- goto put_runtime_pm;
- }
-
- ret = tegra_vde_setup_hw_context(vde, &ctx, dpb_frames,
- bitstream_data_addr,
- bitstream_data_size,
- macroblocks_nb);
- if (ret)
- goto put_runtime_pm;
-
- tegra_vde_decode_frame(vde, macroblocks_nb);
-
- timeout = wait_for_completion_interruptible_timeout(
- &vde->decode_completion, msecs_to_jiffies(1000));
- if (timeout == 0) {
- bsev_ptr = tegra_vde_readl(vde, vde->bsev, 0x10);
- macroblocks_nb = tegra_vde_readl(vde, vde->sxe, 0xC8) & 0x1FFF;
- read_bytes = bsev_ptr ? bsev_ptr - bitstream_data_addr : 0;
-
- dev_err(dev, "Decoding failed: read 0x%X bytes, %u macroblocks parsed\n",
- read_bytes, macroblocks_nb);
-
- ret = -EIO;
- } else if (timeout < 0) {
- ret = timeout;
- }
-
- /*
- * At first reset memory client to avoid resetting VDE HW in the
- * middle of DMA which could result into memory corruption or hang
- * the whole system.
- */
- err = reset_control_assert(vde->rst_mc);
- if (err)
- dev_err(dev, "DEC end: Failed to assert MC reset: %d\n", err);
-
- err = reset_control_assert(vde->rst);
- if (err)
- dev_err(dev, "DEC end: Failed to assert HW reset: %d\n", err);
-
-put_runtime_pm:
- pm_runtime_mark_last_busy(dev);
- pm_runtime_put_autosuspend(dev);
-
-unlock:
- mutex_unlock(&vde->lock);
-
-release_dpb_frames:
- while (i--) {
- dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
-
- tegra_vde_release_frame_dmabufs(&dpb_frames[i], dma_dir,
- ctx.baseline_profile);
- }
-
-free_dpb_frames:
- kfree(dpb_frames);
-
-free_frames:
- kfree(frames);
-
-release_bitstream_dmabuf:
- tegra_vde_detach_and_put_dmabuf(bitstream_data_dmabuf_attachment,
- bitstream_sgt, DMA_TO_DEVICE);
-
- return ret;
-}
-
-static long tegra_vde_unlocked_ioctl(struct file *filp,
- unsigned int cmd, unsigned long arg)
-{
- struct miscdevice *miscdev = filp->private_data;
- struct tegra_vde *vde = container_of(miscdev, struct tegra_vde,
- miscdev);
-
- switch (cmd) {
- case TEGRA_VDE_IOCTL_DECODE_H264:
- return tegra_vde_ioctl_decode_h264(vde, arg);
- }
-
- dev_err(miscdev->parent, "Invalid IOCTL command %u\n", cmd);
-
- return -ENOTTY;
-}
-
-static const struct file_operations tegra_vde_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = tegra_vde_unlocked_ioctl,
-};
-
-static irqreturn_t tegra_vde_isr(int irq, void *data)
-{
- struct tegra_vde *vde = data;
-
- if (completion_done(&vde->decode_completion))
- return IRQ_NONE;
-
- tegra_vde_set_bits(vde, 0, vde->frameid, 0x208);
- complete(&vde->decode_completion);
-
- return IRQ_HANDLED;
-}
-
-static int tegra_vde_runtime_suspend(struct device *dev)
-{
- struct tegra_vde *vde = dev_get_drvdata(dev);
- int err;
-
- err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC);
- if (err) {
- dev_err(dev, "Failed to power down HW: %d\n", err);
- return err;
- }
-
- clk_disable_unprepare(vde->clk);
-
- return 0;
-}
-
-static int tegra_vde_runtime_resume(struct device *dev)
-{
- struct tegra_vde *vde = dev_get_drvdata(dev);
- int err;
-
- err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC,
- vde->clk, vde->rst);
- if (err) {
- dev_err(dev, "Failed to power up HW : %d\n", err);
- return err;
- }
-
- return 0;
-}
-
-static int tegra_vde_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct resource *regs;
- struct tegra_vde *vde;
- int irq, err;
-
- vde = devm_kzalloc(dev, sizeof(*vde), GFP_KERNEL);
- if (!vde)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, vde);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sxe");
- if (!regs)
- return -ENODEV;
-
- vde->sxe = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->sxe))
- return PTR_ERR(vde->sxe);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "bsev");
- if (!regs)
- return -ENODEV;
-
- vde->bsev = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->bsev))
- return PTR_ERR(vde->bsev);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbe");
- if (!regs)
- return -ENODEV;
-
- vde->mbe = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->mbe))
- return PTR_ERR(vde->mbe);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ppe");
- if (!regs)
- return -ENODEV;
-
- vde->ppe = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->ppe))
- return PTR_ERR(vde->ppe);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mce");
- if (!regs)
- return -ENODEV;
-
- vde->mce = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->mce))
- return PTR_ERR(vde->mce);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tfe");
- if (!regs)
- return -ENODEV;
-
- vde->tfe = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->tfe))
- return PTR_ERR(vde->tfe);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ppb");
- if (!regs)
- return -ENODEV;
-
- vde->ppb = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->ppb))
- return PTR_ERR(vde->ppb);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vdma");
- if (!regs)
- return -ENODEV;
-
- vde->vdma = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->vdma))
- return PTR_ERR(vde->vdma);
-
- regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "frameid");
- if (!regs)
- return -ENODEV;
-
- vde->frameid = devm_ioremap_resource(dev, regs);
- if (IS_ERR(vde->frameid))
- return PTR_ERR(vde->frameid);
-
- vde->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(vde->clk)) {
- err = PTR_ERR(vde->clk);
- dev_err(dev, "Could not get VDE clk %d\n", err);
- return err;
- }
-
- vde->rst = devm_reset_control_get(dev, NULL);
- if (IS_ERR(vde->rst)) {
- err = PTR_ERR(vde->rst);
- dev_err(dev, "Could not get VDE reset %d\n", err);
- return err;
- }
-
- vde->rst_mc = devm_reset_control_get_optional(dev, "mc");
- if (IS_ERR(vde->rst_mc)) {
- err = PTR_ERR(vde->rst_mc);
- dev_err(dev, "Could not get MC reset %d\n", err);
- return err;
- }
-
- irq = platform_get_irq_byname(pdev, "sync-token");
- if (irq < 0)
- return irq;
-
- err = devm_request_irq(dev, irq, tegra_vde_isr, 0,
- dev_name(dev), vde);
- if (err) {
- dev_err(dev, "Could not request IRQ %d\n", err);
- return err;
- }
-
- vde->iram_pool = of_gen_pool_get(dev->of_node, "iram", 0);
- if (!vde->iram_pool) {
- dev_err(dev, "Could not get IRAM pool\n");
- return -EPROBE_DEFER;
- }
-
- vde->iram = gen_pool_dma_alloc(vde->iram_pool,
- gen_pool_size(vde->iram_pool),
- &vde->iram_lists_addr);
- if (!vde->iram) {
- dev_err(dev, "Could not reserve IRAM\n");
- return -ENOMEM;
- }
-
- mutex_init(&vde->lock);
- init_completion(&vde->decode_completion);
-
- vde->miscdev.minor = MISC_DYNAMIC_MINOR;
- vde->miscdev.name = "tegra_vde";
- vde->miscdev.fops = &tegra_vde_fops;
- vde->miscdev.parent = dev;
-
- err = misc_register(&vde->miscdev);
- if (err) {
- dev_err(dev, "Failed to register misc device: %d\n", err);
- goto err_gen_free;
- }
-
- pm_runtime_enable(dev);
- pm_runtime_use_autosuspend(dev);
- pm_runtime_set_autosuspend_delay(dev, 300);
-
- if (!pm_runtime_enabled(dev)) {
- err = tegra_vde_runtime_resume(dev);
- if (err)
- goto err_misc_unreg;
- }
-
- return 0;
-
-err_misc_unreg:
- misc_deregister(&vde->miscdev);
-
-err_gen_free:
- gen_pool_free(vde->iram_pool, (unsigned long)vde->iram,
- gen_pool_size(vde->iram_pool));
-
- return err;
-}
-
-static int tegra_vde_remove(struct platform_device *pdev)
-{
- struct tegra_vde *vde = platform_get_drvdata(pdev);
- struct device *dev = &pdev->dev;
- int err;
-
- if (!pm_runtime_enabled(dev)) {
- err = tegra_vde_runtime_suspend(dev);
- if (err)
- return err;
- }
-
- pm_runtime_dont_use_autosuspend(dev);
- pm_runtime_disable(dev);
-
- misc_deregister(&vde->miscdev);
-
- gen_pool_free(vde->iram_pool, (unsigned long)vde->iram,
- gen_pool_size(vde->iram_pool));
-
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tegra_vde_pm_suspend(struct device *dev)
-{
- struct tegra_vde *vde = dev_get_drvdata(dev);
- int err;
-
- mutex_lock(&vde->lock);
-
- err = pm_runtime_force_suspend(dev);
- if (err < 0)
- return err;
-
- return 0;
-}
-
-static int tegra_vde_pm_resume(struct device *dev)
-{
- struct tegra_vde *vde = dev_get_drvdata(dev);
- int err;
-
- err = pm_runtime_force_resume(dev);
- if (err < 0)
- return err;
-
- mutex_unlock(&vde->lock);
-
- return 0;
-}
-#endif
-
-static const struct dev_pm_ops tegra_vde_pm_ops = {
- SET_RUNTIME_PM_OPS(tegra_vde_runtime_suspend,
- tegra_vde_runtime_resume,
- NULL)
- SET_SYSTEM_SLEEP_PM_OPS(tegra_vde_pm_suspend,
- tegra_vde_pm_resume)
-};
-
-static const struct of_device_id tegra_vde_of_match[] = {
- { .compatible = "nvidia,tegra20-vde", },
- { },
-};
-MODULE_DEVICE_TABLE(of, tegra_vde_of_match);
-
-static struct platform_driver tegra_vde_driver = {
- .probe = tegra_vde_probe,
- .remove = tegra_vde_remove,
- .driver = {
- .name = "tegra-vde",
- .of_match_table = tegra_vde_of_match,
- .pm = &tegra_vde_pm_ops,
- },
-};
-module_platform_driver(tegra_vde_driver);
-
-MODULE_DESCRIPTION("NVIDIA Tegra Video Decoder driver");
-MODULE_AUTHOR("Dmitry Osipenko <digetx@gmail.com>");
-MODULE_LICENSE("GPL");
#include <linux/tracepoint.h>
+#include "vde.h"
+
DECLARE_EVENT_CLASS(register_access,
TP_PROTO(struct tegra_vde *vde, void __iomem *base,
u32 offset, u32 value),
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NVIDIA Tegra Video decoder driver
+ *
+ * Copyright (C) 2016-2017 Dmitry Osipenko <digetx@gmail.com>
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-buf.h>
+#include <linux/genalloc.h>
+#include <linux/interrupt.h>
+#include <linux/iopoll.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+
+#include <soc/tegra/pmc.h>
+
+#include "uapi.h"
+#include "vde.h"
+
+#define CREATE_TRACE_POINTS
+#include "trace.h"
+
+#define ICMDQUE_WR 0x00
+#define CMDQUE_CONTROL 0x08
+#define INTR_STATUS 0x18
+#define BSE_INT_ENB 0x40
+#define BSE_CONFIG 0x44
+
+#define BSE_ICMDQUE_EMPTY BIT(3)
+#define BSE_DMA_BUSY BIT(23)
+
+struct video_frame {
+ struct iova *y_iova;
+ struct iova *cb_iova;
+ struct iova *cr_iova;
+ struct iova *aux_iova;
+ struct dma_buf_attachment *y_dmabuf_attachment;
+ struct dma_buf_attachment *cb_dmabuf_attachment;
+ struct dma_buf_attachment *cr_dmabuf_attachment;
+ struct dma_buf_attachment *aux_dmabuf_attachment;
+ struct sg_table *y_sgt;
+ struct sg_table *cb_sgt;
+ struct sg_table *cr_sgt;
+ struct sg_table *aux_sgt;
+ dma_addr_t y_addr;
+ dma_addr_t cb_addr;
+ dma_addr_t cr_addr;
+ dma_addr_t aux_addr;
+ u32 frame_num;
+ u32 flags;
+};
+
+static void tegra_vde_writel(struct tegra_vde *vde,
+ u32 value, void __iomem *base, u32 offset)
+{
+ trace_vde_writel(vde, base, offset, value);
+
+ writel_relaxed(value, base + offset);
+}
+
+static u32 tegra_vde_readl(struct tegra_vde *vde,
+ void __iomem *base, u32 offset)
+{
+ u32 value = readl_relaxed(base + offset);
+
+ trace_vde_readl(vde, base, offset, value);
+
+ return value;
+}
+
+static void tegra_vde_set_bits(struct tegra_vde *vde,
+ u32 mask, void __iomem *base, u32 offset)
+{
+ u32 value = tegra_vde_readl(vde, base, offset);
+
+ tegra_vde_writel(vde, value | mask, base, offset);
+}
+
+static int tegra_vde_wait_mbe(struct tegra_vde *vde)
+{
+ u32 tmp;
+
+ return readl_relaxed_poll_timeout(vde->mbe + 0x8C, tmp,
+ (tmp >= 0x10), 1, 100);
+}
+
+static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde,
+ unsigned int refs_nb,
+ bool setup_refs)
+{
+ u32 frame_idx_enb_mask = 0;
+ u32 value;
+ unsigned int frame_idx;
+ unsigned int idx;
+ int err;
+
+ tegra_vde_writel(vde, 0xD0000000 | (0 << 23), vde->mbe, 0x80);
+ tegra_vde_writel(vde, 0xD0200000 | (0 << 23), vde->mbe, 0x80);
+
+ err = tegra_vde_wait_mbe(vde);
+ if (err)
+ return err;
+
+ if (!setup_refs)
+ return 0;
+
+ for (idx = 0, frame_idx = 1; idx < refs_nb; idx++, frame_idx++) {
+ tegra_vde_writel(vde, 0xD0000000 | (frame_idx << 23),
+ vde->mbe, 0x80);
+ tegra_vde_writel(vde, 0xD0200000 | (frame_idx << 23),
+ vde->mbe, 0x80);
+
+ frame_idx_enb_mask |= frame_idx << (6 * (idx % 4));
+
+ if (idx % 4 == 3 || idx == refs_nb - 1) {
+ value = 0xC0000000;
+ value |= (idx >> 2) << 24;
+ value |= frame_idx_enb_mask;
+
+ tegra_vde_writel(vde, value, vde->mbe, 0x80);
+
+ err = tegra_vde_wait_mbe(vde);
+ if (err)
+ return err;
+
+ frame_idx_enb_mask = 0;
+ }
+ }
+
+ return 0;
+}
+
+static void tegra_vde_mbe_set_0xa_reg(struct tegra_vde *vde, int reg, u32 val)
+{
+ tegra_vde_writel(vde, 0xA0000000 | (reg << 24) | (val & 0xFFFF),
+ vde->mbe, 0x80);
+ tegra_vde_writel(vde, 0xA0000000 | ((reg + 1) << 24) | (val >> 16),
+ vde->mbe, 0x80);
+}
+
+static int tegra_vde_wait_bsev(struct tegra_vde *vde, bool wait_dma)
+{
+ struct device *dev = vde->miscdev.parent;
+ u32 value;
+ int err;
+
+ err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
+ !(value & BIT(2)), 1, 100);
+ if (err) {
+ dev_err(dev, "BSEV unknown bit timeout\n");
+ return err;
+ }
+
+ err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
+ (value & BSE_ICMDQUE_EMPTY), 1, 100);
+ if (err) {
+ dev_err(dev, "BSEV ICMDQUE flush timeout\n");
+ return err;
+ }
+
+ if (!wait_dma)
+ return 0;
+
+ err = readl_relaxed_poll_timeout(vde->bsev + INTR_STATUS, value,
+ !(value & BSE_DMA_BUSY), 1, 100);
+ if (err) {
+ dev_err(dev, "BSEV DMA timeout\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int tegra_vde_push_to_bsev_icmdqueue(struct tegra_vde *vde,
+ u32 value, bool wait_dma)
+{
+ tegra_vde_writel(vde, value, vde->bsev, ICMDQUE_WR);
+
+ return tegra_vde_wait_bsev(vde, wait_dma);
+}
+
+static void tegra_vde_setup_frameid(struct tegra_vde *vde,
+ struct video_frame *frame,
+ unsigned int frameid,
+ u32 mbs_width, u32 mbs_height)
+{
+ u32 y_addr = frame ? frame->y_addr : 0x6CDEAD00;
+ u32 cb_addr = frame ? frame->cb_addr : 0x6CDEAD00;
+ u32 cr_addr = frame ? frame->cr_addr : 0x6CDEAD00;
+ u32 value1 = frame ? ((mbs_width << 16) | mbs_height) : 0;
+ u32 value2 = frame ? ((((mbs_width + 1) >> 1) << 6) | 1) : 0;
+
+ tegra_vde_writel(vde, y_addr >> 8, vde->frameid, 0x000 + frameid * 4);
+ tegra_vde_writel(vde, cb_addr >> 8, vde->frameid, 0x100 + frameid * 4);
+ tegra_vde_writel(vde, cr_addr >> 8, vde->frameid, 0x180 + frameid * 4);
+ tegra_vde_writel(vde, value1, vde->frameid, 0x080 + frameid * 4);
+ tegra_vde_writel(vde, value2, vde->frameid, 0x280 + frameid * 4);
+}
+
+static void tegra_setup_frameidx(struct tegra_vde *vde,
+ struct video_frame *frames,
+ unsigned int frames_nb,
+ u32 mbs_width, u32 mbs_height)
+{
+ unsigned int idx;
+
+ for (idx = 0; idx < frames_nb; idx++)
+ tegra_vde_setup_frameid(vde, &frames[idx], idx,
+ mbs_width, mbs_height);
+
+ for (; idx < 17; idx++)
+ tegra_vde_setup_frameid(vde, NULL, idx, 0, 0);
+}
+
+static void tegra_vde_setup_iram_entry(struct tegra_vde *vde,
+ unsigned int table,
+ unsigned int row,
+ u32 value1, u32 value2)
+{
+ u32 *iram_tables = vde->iram;
+
+ trace_vde_setup_iram_entry(table, row, value1, value2);
+
+ iram_tables[0x20 * table + row * 2] = value1;
+ iram_tables[0x20 * table + row * 2 + 1] = value2;
+}
+
+static void tegra_vde_setup_iram_tables(struct tegra_vde *vde,
+ struct video_frame *dpb_frames,
+ unsigned int ref_frames_nb,
+ unsigned int with_earlier_poc_nb)
+{
+ struct video_frame *frame;
+ u32 value, aux_addr;
+ int with_later_poc_nb;
+ unsigned int i, k;
+
+ trace_vde_ref_l0(dpb_frames[0].frame_num);
+
+ for (i = 0; i < 16; i++) {
+ if (i < ref_frames_nb) {
+ frame = &dpb_frames[i + 1];
+
+ aux_addr = frame->aux_addr;
+
+ value = (i + 1) << 26;
+ value |= !(frame->flags & FLAG_B_FRAME) << 25;
+ value |= 1 << 24;
+ value |= frame->frame_num;
+ } else {
+ aux_addr = 0x6ADEAD00;
+ value = 0;
+ }
+
+ tegra_vde_setup_iram_entry(vde, 0, i, value, aux_addr);
+ tegra_vde_setup_iram_entry(vde, 1, i, value, aux_addr);
+ tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
+ tegra_vde_setup_iram_entry(vde, 3, i, value, aux_addr);
+ }
+
+ if (!(dpb_frames[0].flags & FLAG_B_FRAME))
+ return;
+
+ if (with_earlier_poc_nb >= ref_frames_nb)
+ return;
+
+ with_later_poc_nb = ref_frames_nb - with_earlier_poc_nb;
+
+ trace_vde_ref_l1(with_later_poc_nb, with_earlier_poc_nb);
+
+ for (i = 0, k = with_earlier_poc_nb; i < with_later_poc_nb; i++, k++) {
+ frame = &dpb_frames[k + 1];
+
+ aux_addr = frame->aux_addr;
+
+ value = (k + 1) << 26;
+ value |= !(frame->flags & FLAG_B_FRAME) << 25;
+ value |= 1 << 24;
+ value |= frame->frame_num;
+
+ tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
+ }
+
+ for (k = 0; i < ref_frames_nb; i++, k++) {
+ frame = &dpb_frames[k + 1];
+
+ aux_addr = frame->aux_addr;
+
+ value = (k + 1) << 26;
+ value |= !(frame->flags & FLAG_B_FRAME) << 25;
+ value |= 1 << 24;
+ value |= frame->frame_num;
+
+ tegra_vde_setup_iram_entry(vde, 2, i, value, aux_addr);
+ }
+}
+
+static int tegra_vde_setup_hw_context(struct tegra_vde *vde,
+ struct tegra_vde_h264_decoder_ctx *ctx,
+ struct video_frame *dpb_frames,
+ dma_addr_t bitstream_data_addr,
+ size_t bitstream_data_size,
+ unsigned int macroblocks_nb)
+{
+ struct device *dev = vde->miscdev.parent;
+ u32 value;
+ int err;
+
+ tegra_vde_set_bits(vde, 0x000A, vde->sxe, 0xF0);
+ tegra_vde_set_bits(vde, 0x000B, vde->bsev, CMDQUE_CONTROL);
+ tegra_vde_set_bits(vde, 0x8002, vde->mbe, 0x50);
+ tegra_vde_set_bits(vde, 0x000A, vde->mbe, 0xA0);
+ tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x14);
+ tegra_vde_set_bits(vde, 0x000A, vde->ppe, 0x28);
+ tegra_vde_set_bits(vde, 0x0A00, vde->mce, 0x08);
+ tegra_vde_set_bits(vde, 0x000A, vde->tfe, 0x00);
+ tegra_vde_set_bits(vde, 0x0005, vde->vdma, 0x04);
+
+ tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x1C);
+ tegra_vde_writel(vde, 0x00000000, vde->vdma, 0x00);
+ tegra_vde_writel(vde, 0x00000007, vde->vdma, 0x04);
+ tegra_vde_writel(vde, 0x00000007, vde->frameid, 0x200);
+ tegra_vde_writel(vde, 0x00000005, vde->tfe, 0x04);
+ tegra_vde_writel(vde, 0x00000000, vde->mbe, 0x84);
+ tegra_vde_writel(vde, 0x00000010, vde->sxe, 0x08);
+ tegra_vde_writel(vde, 0x00000150, vde->sxe, 0x54);
+ tegra_vde_writel(vde, 0x0000054C, vde->sxe, 0x58);
+ tegra_vde_writel(vde, 0x00000E34, vde->sxe, 0x5C);
+ tegra_vde_writel(vde, 0x063C063C, vde->mce, 0x10);
+ tegra_vde_writel(vde, 0x0003FC00, vde->bsev, INTR_STATUS);
+ tegra_vde_writel(vde, 0x0000150D, vde->bsev, BSE_CONFIG);
+ tegra_vde_writel(vde, 0x00000100, vde->bsev, BSE_INT_ENB);
+ tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x98);
+ tegra_vde_writel(vde, 0x00000060, vde->bsev, 0x9C);
+
+ memset(vde->iram + 128, 0, macroblocks_nb / 2);
+
+ tegra_setup_frameidx(vde, dpb_frames, ctx->dpb_frames_nb,
+ ctx->pic_width_in_mbs, ctx->pic_height_in_mbs);
+
+ tegra_vde_setup_iram_tables(vde, dpb_frames,
+ ctx->dpb_frames_nb - 1,
+ ctx->dpb_ref_frames_with_earlier_poc_nb);
+
+ /*
+ * The IRAM mapping is write-combine, ensure that CPU buffers have
+ * been flushed at this point.
+ */
+ wmb();
+
+ tegra_vde_writel(vde, 0x00000000, vde->bsev, 0x8C);
+ tegra_vde_writel(vde, bitstream_data_addr + bitstream_data_size,
+ vde->bsev, 0x54);
+
+ value = ctx->pic_width_in_mbs << 11 | ctx->pic_height_in_mbs << 3;
+
+ tegra_vde_writel(vde, value, vde->bsev, 0x88);
+
+ err = tegra_vde_wait_bsev(vde, false);
+ if (err)
+ return err;
+
+ err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x800003FC, false);
+ if (err)
+ return err;
+
+ value = 0x01500000;
+ value |= ((vde->iram_lists_addr + 512) >> 2) & 0xFFFF;
+
+ err = tegra_vde_push_to_bsev_icmdqueue(vde, value, true);
+ if (err)
+ return err;
+
+ err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x840F054C, false);
+ if (err)
+ return err;
+
+ err = tegra_vde_push_to_bsev_icmdqueue(vde, 0x80000080, false);
+ if (err)
+ return err;
+
+ value = 0x0E340000 | ((vde->iram_lists_addr >> 2) & 0xFFFF);
+
+ err = tegra_vde_push_to_bsev_icmdqueue(vde, value, true);
+ if (err)
+ return err;
+
+ value = 0x00800005;
+ value |= ctx->pic_width_in_mbs << 11;
+ value |= ctx->pic_height_in_mbs << 3;
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x10);
+
+ value = !ctx->baseline_profile << 17;
+ value |= ctx->level_idc << 13;
+ value |= ctx->log2_max_pic_order_cnt_lsb << 7;
+ value |= ctx->pic_order_cnt_type << 5;
+ value |= ctx->log2_max_frame_num;
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x40);
+
+ value = ctx->pic_init_qp << 25;
+ value |= !!(ctx->deblocking_filter_control_present_flag) << 2;
+ value |= !!ctx->pic_order_present_flag;
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x44);
+
+ value = ctx->chroma_qp_index_offset;
+ value |= ctx->num_ref_idx_l0_active_minus1 << 5;
+ value |= ctx->num_ref_idx_l1_active_minus1 << 10;
+ value |= !!ctx->constrained_intra_pred_flag << 15;
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x48);
+
+ value = 0x0C000000;
+ value |= !!(dpb_frames[0].flags & FLAG_B_FRAME) << 24;
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x4C);
+
+ value = 0x03800000;
+ value |= bitstream_data_size & GENMASK(19, 15);
+
+ tegra_vde_writel(vde, value, vde->sxe, 0x68);
+
+ tegra_vde_writel(vde, bitstream_data_addr, vde->sxe, 0x6C);
+
+ value = 0x10000005;
+ value |= ctx->pic_width_in_mbs << 11;
+ value |= ctx->pic_height_in_mbs << 3;
+
+ tegra_vde_writel(vde, value, vde->mbe, 0x80);
+
+ value = 0x26800000;
+ value |= ctx->level_idc << 4;
+ value |= !ctx->baseline_profile << 1;
+ value |= !!ctx->direct_8x8_inference_flag;
+
+ tegra_vde_writel(vde, value, vde->mbe, 0x80);
+
+ tegra_vde_writel(vde, 0xF4000001, vde->mbe, 0x80);
+ tegra_vde_writel(vde, 0x20000000, vde->mbe, 0x80);
+ tegra_vde_writel(vde, 0xF4000101, vde->mbe, 0x80);
+
+ value = 0x20000000;
+ value |= ctx->chroma_qp_index_offset << 8;
+
+ tegra_vde_writel(vde, value, vde->mbe, 0x80);
+
+ err = tegra_vde_setup_mbe_frame_idx(vde,
+ ctx->dpb_frames_nb - 1,
+ ctx->pic_order_cnt_type == 0);
+ if (err) {
+ dev_err(dev, "MBE frames setup failed %d\n", err);
+ return err;
+ }
+
+ tegra_vde_mbe_set_0xa_reg(vde, 0, 0x000009FC);
+ tegra_vde_mbe_set_0xa_reg(vde, 2, 0x61DEAD00);
+ tegra_vde_mbe_set_0xa_reg(vde, 4, 0x62DEAD00);
+ tegra_vde_mbe_set_0xa_reg(vde, 6, 0x63DEAD00);
+ tegra_vde_mbe_set_0xa_reg(vde, 8, dpb_frames[0].aux_addr);
+
+ value = 0xFC000000;
+ value |= !!(dpb_frames[0].flags & FLAG_B_FRAME) << 2;
+
+ if (!ctx->baseline_profile)
+ value |= !!(dpb_frames[0].flags & FLAG_REFERENCE) << 1;
+
+ tegra_vde_writel(vde, value, vde->mbe, 0x80);
+
+ err = tegra_vde_wait_mbe(vde);
+ if (err) {
+ dev_err(dev, "MBE programming failed %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void tegra_vde_decode_frame(struct tegra_vde *vde,
+ unsigned int macroblocks_nb)
+{
+ reinit_completion(&vde->decode_completion);
+
+ tegra_vde_writel(vde, 0x00000001, vde->bsev, 0x8C);
+ tegra_vde_writel(vde, 0x20000000 | (macroblocks_nb - 1),
+ vde->sxe, 0x00);
+}
+
+static void tegra_vde_detach_and_put_dmabuf(struct tegra_vde *vde,
+ enum dma_data_direction dma_dir,
+ struct dma_buf_attachment *a,
+ struct sg_table *sgt,
+ struct iova *iova)
+{
+ struct dma_buf *dmabuf = a->dmabuf;
+
+ if (vde->domain)
+ tegra_vde_iommu_unmap(vde, iova);
+
+ dma_buf_unmap_attachment(a, sgt, dma_dir);
+ dma_buf_detach(dmabuf, a);
+ dma_buf_put(dmabuf);
+}
+
+static int tegra_vde_attach_dmabuf(struct tegra_vde *vde,
+ int fd,
+ unsigned long offset,
+ size_t min_size,
+ size_t align_size,
+ struct dma_buf_attachment **a,
+ dma_addr_t *addrp,
+ struct sg_table **s,
+ struct iova **iovap,
+ size_t *size,
+ enum dma_data_direction dma_dir)
+{
+ struct device *dev = vde->miscdev.parent;
+ struct dma_buf_attachment *attachment;
+ struct dma_buf *dmabuf;
+ struct sg_table *sgt;
+ int err;
+
+ dmabuf = dma_buf_get(fd);
+ if (IS_ERR(dmabuf)) {
+ dev_err(dev, "Invalid dmabuf FD\n");
+ return PTR_ERR(dmabuf);
+ }
+
+ if (dmabuf->size & (align_size - 1)) {
+ dev_err(dev, "Unaligned dmabuf 0x%zX, should be aligned to 0x%zX\n",
+ dmabuf->size, align_size);
+ return -EINVAL;
+ }
+
+ if ((u64)offset + min_size > dmabuf->size) {
+ dev_err(dev, "Too small dmabuf size %zu @0x%lX, should be at least %zu\n",
+ dmabuf->size, offset, min_size);
+ return -EINVAL;
+ }
+
+ attachment = dma_buf_attach(dmabuf, dev);
+ if (IS_ERR(attachment)) {
+ dev_err(dev, "Failed to attach dmabuf\n");
+ err = PTR_ERR(attachment);
+ goto err_put;
+ }
+
+ sgt = dma_buf_map_attachment(attachment, dma_dir);
+ if (IS_ERR(sgt)) {
+ dev_err(dev, "Failed to get dmabufs sg_table\n");
+ err = PTR_ERR(sgt);
+ goto err_detach;
+ }
+
+ if (!vde->domain && sgt->nents > 1) {
+ dev_err(dev, "Sparse DMA region is unsupported, please enable IOMMU\n");
+ err = -EINVAL;
+ goto err_unmap;
+ }
+
+ if (vde->domain) {
+ err = tegra_vde_iommu_map(vde, sgt, iovap, addrp, dmabuf->size);
+ if (err) {
+ dev_err(dev, "IOMMU mapping failed: %d\n", err);
+ goto err_unmap;
+ }
+ } else {
+ *addrp = sg_dma_address(sgt->sgl);
+ }
+
+ *addrp = *addrp + offset;
+ *a = attachment;
+ *s = sgt;
+
+ if (size)
+ *size = dmabuf->size - offset;
+
+ return 0;
+
+err_unmap:
+ dma_buf_unmap_attachment(attachment, sgt, dma_dir);
+err_detach:
+ dma_buf_detach(dmabuf, attachment);
+err_put:
+ dma_buf_put(dmabuf);
+
+ return err;
+}
+
+static int tegra_vde_attach_dmabufs_to_frame(struct tegra_vde *vde,
+ struct video_frame *frame,
+ struct tegra_vde_h264_frame *src,
+ enum dma_data_direction dma_dir,
+ bool baseline_profile,
+ size_t lsize, size_t csize)
+{
+ int err;
+
+ err = tegra_vde_attach_dmabuf(vde, src->y_fd,
+ src->y_offset, lsize, SZ_256,
+ &frame->y_dmabuf_attachment,
+ &frame->y_addr,
+ &frame->y_sgt,
+ &frame->y_iova,
+ NULL, dma_dir);
+ if (err)
+ return err;
+
+ err = tegra_vde_attach_dmabuf(vde, src->cb_fd,
+ src->cb_offset, csize, SZ_256,
+ &frame->cb_dmabuf_attachment,
+ &frame->cb_addr,
+ &frame->cb_sgt,
+ &frame->cb_iova,
+ NULL, dma_dir);
+ if (err)
+ goto err_release_y;
+
+ err = tegra_vde_attach_dmabuf(vde, src->cr_fd,
+ src->cr_offset, csize, SZ_256,
+ &frame->cr_dmabuf_attachment,
+ &frame->cr_addr,
+ &frame->cr_sgt,
+ &frame->cr_iova,
+ NULL, dma_dir);
+ if (err)
+ goto err_release_cb;
+
+ if (baseline_profile) {
+ frame->aux_addr = 0x64DEAD00;
+ return 0;
+ }
+
+ err = tegra_vde_attach_dmabuf(vde, src->aux_fd,
+ src->aux_offset, csize, SZ_256,
+ &frame->aux_dmabuf_attachment,
+ &frame->aux_addr,
+ &frame->aux_sgt,
+ &frame->aux_iova,
+ NULL, dma_dir);
+ if (err)
+ goto err_release_cr;
+
+ return 0;
+
+err_release_cr:
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->cr_dmabuf_attachment,
+ frame->cr_sgt,
+ frame->cr_iova);
+err_release_cb:
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->cb_dmabuf_attachment,
+ frame->cb_sgt,
+ frame->cb_iova);
+err_release_y:
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->y_dmabuf_attachment,
+ frame->y_sgt,
+ frame->y_iova);
+
+ return err;
+}
+
+static void tegra_vde_release_frame_dmabufs(struct tegra_vde *vde,
+ struct video_frame *frame,
+ enum dma_data_direction dma_dir,
+ bool baseline_profile)
+{
+ if (!baseline_profile)
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->aux_dmabuf_attachment,
+ frame->aux_sgt,
+ frame->aux_iova);
+
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->cr_dmabuf_attachment,
+ frame->cr_sgt,
+ frame->cr_iova);
+
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->cb_dmabuf_attachment,
+ frame->cb_sgt,
+ frame->cb_iova);
+
+ tegra_vde_detach_and_put_dmabuf(vde, dma_dir,
+ frame->y_dmabuf_attachment,
+ frame->y_sgt,
+ frame->y_iova);
+}
+
+static int tegra_vde_validate_frame(struct device *dev,
+ struct tegra_vde_h264_frame *frame)
+{
+ if (frame->frame_num > 0x7FFFFF) {
+ dev_err(dev, "Bad frame_num %u\n", frame->frame_num);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tegra_vde_validate_h264_ctx(struct device *dev,
+ struct tegra_vde_h264_decoder_ctx *ctx)
+{
+ if (ctx->dpb_frames_nb == 0 || ctx->dpb_frames_nb > 17) {
+ dev_err(dev, "Bad DPB size %u\n", ctx->dpb_frames_nb);
+ return -EINVAL;
+ }
+
+ if (ctx->level_idc > 15) {
+ dev_err(dev, "Bad level value %u\n", ctx->level_idc);
+ return -EINVAL;
+ }
+
+ if (ctx->pic_init_qp > 52) {
+ dev_err(dev, "Bad pic_init_qp value %u\n", ctx->pic_init_qp);
+ return -EINVAL;
+ }
+
+ if (ctx->log2_max_pic_order_cnt_lsb > 16) {
+ dev_err(dev, "Bad log2_max_pic_order_cnt_lsb value %u\n",
+ ctx->log2_max_pic_order_cnt_lsb);
+ return -EINVAL;
+ }
+
+ if (ctx->log2_max_frame_num > 16) {
+ dev_err(dev, "Bad log2_max_frame_num value %u\n",
+ ctx->log2_max_frame_num);
+ return -EINVAL;
+ }
+
+ if (ctx->chroma_qp_index_offset > 31) {
+ dev_err(dev, "Bad chroma_qp_index_offset value %u\n",
+ ctx->chroma_qp_index_offset);
+ return -EINVAL;
+ }
+
+ if (ctx->pic_order_cnt_type > 2) {
+ dev_err(dev, "Bad pic_order_cnt_type value %u\n",
+ ctx->pic_order_cnt_type);
+ return -EINVAL;
+ }
+
+ if (ctx->num_ref_idx_l0_active_minus1 > 15) {
+ dev_err(dev, "Bad num_ref_idx_l0_active_minus1 value %u\n",
+ ctx->num_ref_idx_l0_active_minus1);
+ return -EINVAL;
+ }
+
+ if (ctx->num_ref_idx_l1_active_minus1 > 15) {
+ dev_err(dev, "Bad num_ref_idx_l1_active_minus1 value %u\n",
+ ctx->num_ref_idx_l1_active_minus1);
+ return -EINVAL;
+ }
+
+ if (!ctx->pic_width_in_mbs || ctx->pic_width_in_mbs > 127) {
+ dev_err(dev, "Bad pic_width_in_mbs value %u\n",
+ ctx->pic_width_in_mbs);
+ return -EINVAL;
+ }
+
+ if (!ctx->pic_height_in_mbs || ctx->pic_height_in_mbs > 127) {
+ dev_err(dev, "Bad pic_height_in_mbs value %u\n",
+ ctx->pic_height_in_mbs);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
+ unsigned long vaddr)
+{
+ struct device *dev = vde->miscdev.parent;
+ struct tegra_vde_h264_decoder_ctx ctx;
+ struct tegra_vde_h264_frame *frames;
+ struct tegra_vde_h264_frame __user *frames_user;
+ struct video_frame *dpb_frames;
+ struct dma_buf_attachment *bitstream_data_dmabuf_attachment;
+ struct sg_table *bitstream_sgt;
+ struct iova *bitstream_iova;
+ enum dma_data_direction dma_dir;
+ dma_addr_t bitstream_data_addr;
+ dma_addr_t bsev_ptr;
+ size_t lsize, csize;
+ size_t bitstream_data_size;
+ unsigned int macroblocks_nb;
+ unsigned int read_bytes;
+ unsigned int cstride;
+ unsigned int i;
+ long timeout;
+ int ret, err;
+
+ if (copy_from_user(&ctx, (void __user *)vaddr, sizeof(ctx)))
+ return -EFAULT;
+
+ ret = tegra_vde_validate_h264_ctx(dev, &ctx);
+ if (ret)
+ return ret;
+
+ ret = tegra_vde_attach_dmabuf(vde, ctx.bitstream_data_fd,
+ ctx.bitstream_data_offset,
+ SZ_16K, SZ_16K,
+ &bitstream_data_dmabuf_attachment,
+ &bitstream_data_addr,
+ &bitstream_sgt,
+ &bitstream_iova,
+ &bitstream_data_size,
+ DMA_TO_DEVICE);
+ if (ret)
+ return ret;
+
+ frames = kmalloc_array(ctx.dpb_frames_nb, sizeof(*frames), GFP_KERNEL);
+ if (!frames) {
+ ret = -ENOMEM;
+ goto release_bitstream_dmabuf;
+ }
+
+ dpb_frames = kcalloc(ctx.dpb_frames_nb, sizeof(*dpb_frames),
+ GFP_KERNEL);
+ if (!dpb_frames) {
+ ret = -ENOMEM;
+ goto free_frames;
+ }
+
+ macroblocks_nb = ctx.pic_width_in_mbs * ctx.pic_height_in_mbs;
+ frames_user = u64_to_user_ptr(ctx.dpb_frames_ptr);
+
+ if (copy_from_user(frames, frames_user,
+ ctx.dpb_frames_nb * sizeof(*frames))) {
+ ret = -EFAULT;
+ goto free_dpb_frames;
+ }
+
+ cstride = ALIGN(ctx.pic_width_in_mbs * 8, 16);
+ csize = cstride * ctx.pic_height_in_mbs * 8;
+ lsize = macroblocks_nb * 256;
+
+ for (i = 0; i < ctx.dpb_frames_nb; i++) {
+ ret = tegra_vde_validate_frame(dev, &frames[i]);
+ if (ret)
+ goto release_dpb_frames;
+
+ dpb_frames[i].flags = frames[i].flags;
+ dpb_frames[i].frame_num = frames[i].frame_num;
+
+ dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+
+ ret = tegra_vde_attach_dmabufs_to_frame(vde, &dpb_frames[i],
+ &frames[i], dma_dir,
+ ctx.baseline_profile,
+ lsize, csize);
+ if (ret)
+ goto release_dpb_frames;
+ }
+
+ ret = mutex_lock_interruptible(&vde->lock);
+ if (ret)
+ goto release_dpb_frames;
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0)
+ goto unlock;
+
+ /*
+ * We rely on the VDE registers reset value, otherwise VDE
+ * causes bus lockup.
+ */
+ ret = reset_control_assert(vde->rst_mc);
+ if (ret) {
+ dev_err(dev, "DEC start: Failed to assert MC reset: %d\n",
+ ret);
+ goto put_runtime_pm;
+ }
+
+ ret = reset_control_reset(vde->rst);
+ if (ret) {
+ dev_err(dev, "DEC start: Failed to reset HW: %d\n", ret);
+ goto put_runtime_pm;
+ }
+
+ ret = reset_control_deassert(vde->rst_mc);
+ if (ret) {
+ dev_err(dev, "DEC start: Failed to deassert MC reset: %d\n",
+ ret);
+ goto put_runtime_pm;
+ }
+
+ ret = tegra_vde_setup_hw_context(vde, &ctx, dpb_frames,
+ bitstream_data_addr,
+ bitstream_data_size,
+ macroblocks_nb);
+ if (ret)
+ goto put_runtime_pm;
+
+ tegra_vde_decode_frame(vde, macroblocks_nb);
+
+ timeout = wait_for_completion_interruptible_timeout(
+ &vde->decode_completion, msecs_to_jiffies(1000));
+ if (timeout == 0) {
+ bsev_ptr = tegra_vde_readl(vde, vde->bsev, 0x10);
+ macroblocks_nb = tegra_vde_readl(vde, vde->sxe, 0xC8) & 0x1FFF;
+ read_bytes = bsev_ptr ? bsev_ptr - bitstream_data_addr : 0;
+
+ dev_err(dev, "Decoding failed: read 0x%X bytes, %u macroblocks parsed\n",
+ read_bytes, macroblocks_nb);
+
+ ret = -EIO;
+ } else if (timeout < 0) {
+ ret = timeout;
+ }
+
+ /*
+ * At first reset memory client to avoid resetting VDE HW in the
+ * middle of DMA which could result into memory corruption or hang
+ * the whole system.
+ */
+ err = reset_control_assert(vde->rst_mc);
+ if (err)
+ dev_err(dev, "DEC end: Failed to assert MC reset: %d\n", err);
+
+ err = reset_control_assert(vde->rst);
+ if (err)
+ dev_err(dev, "DEC end: Failed to assert HW reset: %d\n", err);
+
+put_runtime_pm:
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+unlock:
+ mutex_unlock(&vde->lock);
+
+release_dpb_frames:
+ while (i--) {
+ dma_dir = (i == 0) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+
+ tegra_vde_release_frame_dmabufs(vde, &dpb_frames[i], dma_dir,
+ ctx.baseline_profile);
+ }
+
+free_dpb_frames:
+ kfree(dpb_frames);
+
+free_frames:
+ kfree(frames);
+
+release_bitstream_dmabuf:
+ tegra_vde_detach_and_put_dmabuf(vde, DMA_TO_DEVICE,
+ bitstream_data_dmabuf_attachment,
+ bitstream_sgt,
+ bitstream_iova);
+
+ return ret;
+}
+
+static long tegra_vde_unlocked_ioctl(struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ struct miscdevice *miscdev = filp->private_data;
+ struct tegra_vde *vde = container_of(miscdev, struct tegra_vde,
+ miscdev);
+
+ switch (cmd) {
+ case TEGRA_VDE_IOCTL_DECODE_H264:
+ return tegra_vde_ioctl_decode_h264(vde, arg);
+ }
+
+ dev_err(miscdev->parent, "Invalid IOCTL command %u\n", cmd);
+
+ return -ENOTTY;
+}
+
+static const struct file_operations tegra_vde_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = tegra_vde_unlocked_ioctl,
+};
+
+static irqreturn_t tegra_vde_isr(int irq, void *data)
+{
+ struct tegra_vde *vde = data;
+
+ if (completion_done(&vde->decode_completion))
+ return IRQ_NONE;
+
+ tegra_vde_set_bits(vde, 0, vde->frameid, 0x208);
+ complete(&vde->decode_completion);
+
+ return IRQ_HANDLED;
+}
+
+static int tegra_vde_runtime_suspend(struct device *dev)
+{
+ struct tegra_vde *vde = dev_get_drvdata(dev);
+ int err;
+
+ err = tegra_powergate_power_off(TEGRA_POWERGATE_VDEC);
+ if (err) {
+ dev_err(dev, "Failed to power down HW: %d\n", err);
+ return err;
+ }
+
+ clk_disable_unprepare(vde->clk);
+
+ return 0;
+}
+
+static int tegra_vde_runtime_resume(struct device *dev)
+{
+ struct tegra_vde *vde = dev_get_drvdata(dev);
+ int err;
+
+ err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_VDEC,
+ vde->clk, vde->rst);
+ if (err) {
+ dev_err(dev, "Failed to power up HW : %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int tegra_vde_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *regs;
+ struct tegra_vde *vde;
+ int irq, err;
+
+ vde = devm_kzalloc(dev, sizeof(*vde), GFP_KERNEL);
+ if (!vde)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, vde);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sxe");
+ if (!regs)
+ return -ENODEV;
+
+ vde->sxe = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->sxe))
+ return PTR_ERR(vde->sxe);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "bsev");
+ if (!regs)
+ return -ENODEV;
+
+ vde->bsev = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->bsev))
+ return PTR_ERR(vde->bsev);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbe");
+ if (!regs)
+ return -ENODEV;
+
+ vde->mbe = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->mbe))
+ return PTR_ERR(vde->mbe);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ppe");
+ if (!regs)
+ return -ENODEV;
+
+ vde->ppe = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->ppe))
+ return PTR_ERR(vde->ppe);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mce");
+ if (!regs)
+ return -ENODEV;
+
+ vde->mce = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->mce))
+ return PTR_ERR(vde->mce);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tfe");
+ if (!regs)
+ return -ENODEV;
+
+ vde->tfe = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->tfe))
+ return PTR_ERR(vde->tfe);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ppb");
+ if (!regs)
+ return -ENODEV;
+
+ vde->ppb = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->ppb))
+ return PTR_ERR(vde->ppb);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vdma");
+ if (!regs)
+ return -ENODEV;
+
+ vde->vdma = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->vdma))
+ return PTR_ERR(vde->vdma);
+
+ regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "frameid");
+ if (!regs)
+ return -ENODEV;
+
+ vde->frameid = devm_ioremap_resource(dev, regs);
+ if (IS_ERR(vde->frameid))
+ return PTR_ERR(vde->frameid);
+
+ vde->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(vde->clk)) {
+ err = PTR_ERR(vde->clk);
+ dev_err(dev, "Could not get VDE clk %d\n", err);
+ return err;
+ }
+
+ vde->rst = devm_reset_control_get(dev, NULL);
+ if (IS_ERR(vde->rst)) {
+ err = PTR_ERR(vde->rst);
+ dev_err(dev, "Could not get VDE reset %d\n", err);
+ return err;
+ }
+
+ vde->rst_mc = devm_reset_control_get_optional(dev, "mc");
+ if (IS_ERR(vde->rst_mc)) {
+ err = PTR_ERR(vde->rst_mc);
+ dev_err(dev, "Could not get MC reset %d\n", err);
+ return err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "sync-token");
+ if (irq < 0)
+ return irq;
+
+ err = devm_request_irq(dev, irq, tegra_vde_isr, 0,
+ dev_name(dev), vde);
+ if (err) {
+ dev_err(dev, "Could not request IRQ %d\n", err);
+ return err;
+ }
+
+ vde->iram_pool = of_gen_pool_get(dev->of_node, "iram", 0);
+ if (!vde->iram_pool) {
+ dev_err(dev, "Could not get IRAM pool\n");
+ return -EPROBE_DEFER;
+ }
+
+ vde->iram = gen_pool_dma_alloc(vde->iram_pool,
+ gen_pool_size(vde->iram_pool),
+ &vde->iram_lists_addr);
+ if (!vde->iram) {
+ dev_err(dev, "Could not reserve IRAM\n");
+ return -ENOMEM;
+ }
+
+ mutex_init(&vde->lock);
+ init_completion(&vde->decode_completion);
+
+ vde->miscdev.minor = MISC_DYNAMIC_MINOR;
+ vde->miscdev.name = "tegra_vde";
+ vde->miscdev.fops = &tegra_vde_fops;
+ vde->miscdev.parent = dev;
+
+ err = tegra_vde_iommu_init(vde);
+ if (err) {
+ dev_err(dev, "Failed to initialize IOMMU: %d\n", err);
+ goto err_gen_free;
+ }
+
+ err = misc_register(&vde->miscdev);
+ if (err) {
+ dev_err(dev, "Failed to register misc device: %d\n", err);
+ goto err_deinit_iommu;
+ }
+
+ pm_runtime_enable(dev);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_set_autosuspend_delay(dev, 300);
+
+ if (!pm_runtime_enabled(dev)) {
+ err = tegra_vde_runtime_resume(dev);
+ if (err)
+ goto err_misc_unreg;
+ }
+
+ return 0;
+
+err_misc_unreg:
+ misc_deregister(&vde->miscdev);
+
+err_deinit_iommu:
+ tegra_vde_iommu_deinit(vde);
+
+err_gen_free:
+ gen_pool_free(vde->iram_pool, (unsigned long)vde->iram,
+ gen_pool_size(vde->iram_pool));
+
+ return err;
+}
+
+static int tegra_vde_remove(struct platform_device *pdev)
+{
+ struct tegra_vde *vde = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ int err;
+
+ if (!pm_runtime_enabled(dev)) {
+ err = tegra_vde_runtime_suspend(dev);
+ if (err)
+ return err;
+ }
+
+ pm_runtime_dont_use_autosuspend(dev);
+ pm_runtime_disable(dev);
+
+ misc_deregister(&vde->miscdev);
+
+ tegra_vde_iommu_deinit(vde);
+
+ gen_pool_free(vde->iram_pool, (unsigned long)vde->iram,
+ gen_pool_size(vde->iram_pool));
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int tegra_vde_pm_suspend(struct device *dev)
+{
+ struct tegra_vde *vde = dev_get_drvdata(dev);
+ int err;
+
+ mutex_lock(&vde->lock);
+
+ err = pm_runtime_force_suspend(dev);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int tegra_vde_pm_resume(struct device *dev)
+{
+ struct tegra_vde *vde = dev_get_drvdata(dev);
+ int err;
+
+ err = pm_runtime_force_resume(dev);
+ if (err < 0)
+ return err;
+
+ mutex_unlock(&vde->lock);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops tegra_vde_pm_ops = {
+ SET_RUNTIME_PM_OPS(tegra_vde_runtime_suspend,
+ tegra_vde_runtime_resume,
+ NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(tegra_vde_pm_suspend,
+ tegra_vde_pm_resume)
+};
+
+static const struct of_device_id tegra_vde_of_match[] = {
+ { .compatible = "nvidia,tegra20-vde", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, tegra_vde_of_match);
+
+static struct platform_driver tegra_vde_driver = {
+ .probe = tegra_vde_probe,
+ .remove = tegra_vde_remove,
+ .driver = {
+ .name = "tegra-vde",
+ .of_match_table = tegra_vde_of_match,
+ .pm = &tegra_vde_pm_ops,
+ },
+};
+module_platform_driver(tegra_vde_driver);
+
+MODULE_DESCRIPTION("NVIDIA Tegra Video Decoder driver");
+MODULE_AUTHOR("Dmitry Osipenko <digetx@gmail.com>");
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * NVIDIA Tegra Video decoder driver
+ *
+ * Copyright (C) 2016-2019 GRATE-DRIVER project
+ */
+
+#ifndef TEGRA_VDE_H
+#define TEGRA_VDE_H
+
+#include <linux/completion.h>
+#include <linux/miscdevice.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/iova.h>
+
+struct clk;
+struct gen_pool;
+struct iommu_group;
+struct iommu_domain;
+struct reset_control;
+
+struct tegra_vde {
+ void __iomem *sxe;
+ void __iomem *bsev;
+ void __iomem *mbe;
+ void __iomem *ppe;
+ void __iomem *mce;
+ void __iomem *tfe;
+ void __iomem *ppb;
+ void __iomem *vdma;
+ void __iomem *frameid;
+ struct mutex lock;
+ struct miscdevice miscdev;
+ struct reset_control *rst;
+ struct reset_control *rst_mc;
+ struct gen_pool *iram_pool;
+ struct completion decode_completion;
+ struct clk *clk;
+ struct iommu_domain *domain;
+ struct iommu_group *group;
+ struct iova_domain iova;
+ struct iova *iova_resv_static_addresses;
+ struct iova *iova_resv_last_page;
+ dma_addr_t iram_lists_addr;
+ u32 *iram;
+};
+
+int tegra_vde_iommu_init(struct tegra_vde *vde);
+void tegra_vde_iommu_deinit(struct tegra_vde *vde);
+int tegra_vde_iommu_map(struct tegra_vde *vde,
+ struct sg_table *sgt,
+ struct iova **iovap,
+ dma_addr_t *addrp,
+ size_t size);
+void tegra_vde_iommu_unmap(struct tegra_vde *vde, struct iova *iova);
+
+static __maybe_unused char const *
+tegra_vde_reg_base_name(struct tegra_vde *vde, void __iomem *base)
+{
+ if (vde->sxe == base)
+ return "SXE";
+
+ if (vde->bsev == base)
+ return "BSEV";
+
+ if (vde->mbe == base)
+ return "MBE";
+
+ if (vde->ppe == base)
+ return "PPE";
+
+ if (vde->mce == base)
+ return "MCE";
+
+ if (vde->tfe == base)
+ return "TFE";
+
+ if (vde->ppb == base)
+ return "PPB";
+
+ if (vde->vdma == base)
+ return "VDMA";
+
+ if (vde->frameid == base)
+ return "FRAMEID";
+
+ return "???";
+}
+
+#endif /* TEGRA_VDE_H */
projects / mirror_ubuntu-eoan-kernel.git / commitdiff