*/
#include "hw.h"
#include "pci.h"
+#include "msi.h"
+#include "msix.h"
#include "pci_host.h"
#include "hw/spapr.h"
#include "hw/spapr_pci.h"
#include "exec-memory.h"
#include <libfdt.h>
+#include "trace.h"
#include "hw/pci_internals.h"
-static PCIDevice *find_dev(sPAPREnvironment *spapr,
- uint64_t buid, uint32_t config_addr)
+/* Copied from the kernel arch/powerpc/platforms/pseries/msi.c */
+#define RTAS_QUERY_FN 0
+#define RTAS_CHANGE_FN 1
+#define RTAS_RESET_FN 2
+#define RTAS_CHANGE_MSI_FN 3
+#define RTAS_CHANGE_MSIX_FN 4
+
+/* Interrupt types to return on RTAS_CHANGE_* */
+#define RTAS_TYPE_MSI 1
+#define RTAS_TYPE_MSIX 2
+
+static sPAPRPHBState *find_phb(sPAPREnvironment *spapr, uint64_t buid)
{
- DeviceState *qdev;
- int devfn = (config_addr >> 8) & 0xFF;
- sPAPRPHBState *phb;
+ sPAPRPHBState *sphb;
- QLIST_FOREACH(phb, &spapr->phbs, list) {
- if (phb->buid != buid) {
+ QLIST_FOREACH(sphb, &spapr->phbs, list) {
+ if (sphb->buid != buid) {
continue;
}
+ return sphb;
+ }
+
+ return NULL;
+}
- QTAILQ_FOREACH(qdev, &phb->host_state.bus->qbus.children, sibling) {
- PCIDevice *dev = (PCIDevice *)qdev;
- if (dev->devfn == devfn) {
- return dev;
- }
+static PCIDevice *find_dev(sPAPREnvironment *spapr, uint64_t buid,
+ uint32_t config_addr)
+{
+ sPAPRPHBState *sphb = find_phb(spapr, buid);
+ PCIHostState *phb = PCI_HOST_BRIDGE(sphb);
+ BusState *bus = BUS(phb->bus);
+ BusChild *kid;
+ int devfn = (config_addr >> 8) & 0xFF;
+
+ if (!phb) {
+ return NULL;
+ }
+
+ QTAILQ_FOREACH(kid, &bus->children, sibling) {
+ PCIDevice *dev = (PCIDevice *)kid->child;
+ if (dev->devfn == devfn) {
+ return dev;
}
}
static uint32_t rtas_pci_cfgaddr(uint32_t arg)
{
+ /* This handles the encoding of extended config space addresses */
return ((arg >> 20) & 0xf00) | (arg & 0xff);
}
-static uint32_t rtas_read_pci_config_do(PCIDevice *pci_dev, uint32_t addr,
- uint32_t limit, uint32_t len)
+static void finish_read_pci_config(sPAPREnvironment *spapr, uint64_t buid,
+ uint32_t addr, uint32_t size,
+ target_ulong rets)
{
- if ((addr + len) <= limit) {
- return pci_host_config_read_common(pci_dev, addr, limit, len);
- } else {
- return ~0x0;
+ PCIDevice *pci_dev;
+ uint32_t val;
+
+ if ((size != 1) && (size != 2) && (size != 4)) {
+ /* access must be 1, 2 or 4 bytes */
+ rtas_st(rets, 0, -1);
+ return;
}
-}
-static void rtas_write_pci_config_do(PCIDevice *pci_dev, uint32_t addr,
- uint32_t limit, uint32_t val,
- uint32_t len)
-{
- if ((addr + len) <= limit) {
- pci_host_config_write_common(pci_dev, addr, limit, val, len);
+ pci_dev = find_dev(spapr, buid, addr);
+ addr = rtas_pci_cfgaddr(addr);
+
+ if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
+ /* Access must be to a valid device, within bounds and
+ * naturally aligned */
+ rtas_st(rets, 0, -1);
+ return;
}
+
+ val = pci_host_config_read_common(pci_dev, addr,
+ pci_config_size(pci_dev), size);
+
+ rtas_st(rets, 0, 0);
+ rtas_st(rets, 1, val);
}
static void rtas_ibm_read_pci_config(sPAPREnvironment *spapr,
target_ulong args,
uint32_t nret, target_ulong rets)
{
- uint32_t val, size, addr;
- uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
- PCIDevice *dev = find_dev(spapr, buid, rtas_ld(args, 0));
+ uint64_t buid;
+ uint32_t size, addr;
- if (!dev) {
+ if ((nargs != 4) || (nret != 2)) {
rtas_st(rets, 0, -1);
return;
}
+
+ buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
size = rtas_ld(args, 3);
- addr = rtas_pci_cfgaddr(rtas_ld(args, 0));
- val = rtas_read_pci_config_do(dev, addr, pci_config_size(dev), size);
- rtas_st(rets, 0, 0);
- rtas_st(rets, 1, val);
+ addr = rtas_ld(args, 0);
+
+ finish_read_pci_config(spapr, buid, addr, size, rets);
}
static void rtas_read_pci_config(sPAPREnvironment *spapr,
target_ulong args,
uint32_t nret, target_ulong rets)
{
- uint32_t val, size, addr;
- PCIDevice *dev = find_dev(spapr, 0, rtas_ld(args, 0));
+ uint32_t size, addr;
- if (!dev) {
+ if ((nargs != 2) || (nret != 2)) {
rtas_st(rets, 0, -1);
return;
}
+
size = rtas_ld(args, 1);
- addr = rtas_pci_cfgaddr(rtas_ld(args, 0));
- val = rtas_read_pci_config_do(dev, addr, pci_config_size(dev), size);
+ addr = rtas_ld(args, 0);
+
+ finish_read_pci_config(spapr, 0, addr, size, rets);
+}
+
+static void finish_write_pci_config(sPAPREnvironment *spapr, uint64_t buid,
+ uint32_t addr, uint32_t size,
+ uint32_t val, target_ulong rets)
+{
+ PCIDevice *pci_dev;
+
+ if ((size != 1) && (size != 2) && (size != 4)) {
+ /* access must be 1, 2 or 4 bytes */
+ rtas_st(rets, 0, -1);
+ return;
+ }
+
+ pci_dev = find_dev(spapr, buid, addr);
+ addr = rtas_pci_cfgaddr(addr);
+
+ if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
+ /* Access must be to a valid device, within bounds and
+ * naturally aligned */
+ rtas_st(rets, 0, -1);
+ return;
+ }
+
+ pci_host_config_write_common(pci_dev, addr, pci_config_size(pci_dev),
+ val, size);
+
rtas_st(rets, 0, 0);
- rtas_st(rets, 1, val);
}
static void rtas_ibm_write_pci_config(sPAPREnvironment *spapr,
target_ulong args,
uint32_t nret, target_ulong rets)
{
+ uint64_t buid;
uint32_t val, size, addr;
- uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
- PCIDevice *dev = find_dev(spapr, buid, rtas_ld(args, 0));
- if (!dev) {
+ if ((nargs != 5) || (nret != 1)) {
rtas_st(rets, 0, -1);
return;
}
+
+ buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
val = rtas_ld(args, 4);
size = rtas_ld(args, 3);
- addr = rtas_pci_cfgaddr(rtas_ld(args, 0));
- rtas_write_pci_config_do(dev, addr, pci_config_size(dev), val, size);
- rtas_st(rets, 0, 0);
+ addr = rtas_ld(args, 0);
+
+ finish_write_pci_config(spapr, buid, addr, size, val, rets);
}
static void rtas_write_pci_config(sPAPREnvironment *spapr,
uint32_t nret, target_ulong rets)
{
uint32_t val, size, addr;
- PCIDevice *dev = find_dev(spapr, 0, rtas_ld(args, 0));
- if (!dev) {
+ if ((nargs != 3) || (nret != 1)) {
rtas_st(rets, 0, -1);
return;
}
+
+
val = rtas_ld(args, 2);
size = rtas_ld(args, 1);
- addr = rtas_pci_cfgaddr(rtas_ld(args, 0));
- rtas_write_pci_config_do(dev, addr, pci_config_size(dev), val, size);
- rtas_st(rets, 0, 0);
+ addr = rtas_ld(args, 0);
+
+ finish_write_pci_config(spapr, 0, addr, size, val, rets);
}
-static int pci_spapr_map_irq(PCIDevice *pci_dev, int irq_num)
+/*
+ * Find an entry with config_addr or returns the empty one if not found AND
+ * alloc_new is set.
+ * At the moment the msi_table entries are never released so there is
+ * no point to look till the end of the list if we need to find the free entry.
+ */
+static int spapr_msicfg_find(sPAPRPHBState *phb, uint32_t config_addr,
+ bool alloc_new)
{
- /*
- * Here we need to convert pci_dev + irq_num to some unique value
- * which is less than number of IRQs on the specific bus (now it
- * is 16). At the moment irq_num == device_id (number of the
- * slot?)
- * FIXME: we should swizzle in fn and irq_num
- */
- return (pci_dev->devfn >> 3) % SPAPR_PCI_NUM_LSI;
+ int i;
+
+ for (i = 0; i < SPAPR_MSIX_MAX_DEVS; ++i) {
+ if (!phb->msi_table[i].nvec) {
+ break;
+ }
+ if (phb->msi_table[i].config_addr == config_addr) {
+ return i;
+ }
+ }
+ if ((i < SPAPR_MSIX_MAX_DEVS) && alloc_new) {
+ trace_spapr_pci_msi("Allocating new MSI config", i, config_addr);
+ return i;
+ }
+
+ return -1;
}
-static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
+/*
+ * Set MSI/MSIX message data.
+ * This is required for msi_notify()/msix_notify() which
+ * will write at the addresses via spapr_msi_write().
+ */
+static void spapr_msi_setmsg(PCIDevice *pdev, hwaddr addr,
+ bool msix, unsigned req_num)
{
- /*
- * Here we use the number returned by pci_spapr_map_irq to find a
- * corresponding qemu_irq.
- */
- sPAPRPHBState *phb = opaque;
+ unsigned i;
+ MSIMessage msg = { .address = addr, .data = 0 };
+
+ if (!msix) {
+ msi_set_message(pdev, msg);
+ trace_spapr_pci_msi_setup(pdev->name, 0, msg.address);
+ return;
+ }
- qemu_set_irq(phb->lsi_table[irq_num].qirq, level);
+ for (i = 0; i < req_num; ++i) {
+ msg.address = addr | (i << 2);
+ msix_set_message(pdev, i, msg);
+ trace_spapr_pci_msi_setup(pdev->name, i, msg.address);
+ }
}
-static int spapr_phb_init(SysBusDevice *s)
+static void rtas_ibm_change_msi(sPAPREnvironment *spapr,
+ uint32_t token, uint32_t nargs,
+ target_ulong args, uint32_t nret,
+ target_ulong rets)
{
- sPAPRPHBState *phb = FROM_SYSBUS(sPAPRPHBState, s);
- int i;
+ uint32_t config_addr = rtas_ld(args, 0);
+ uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+ unsigned int func = rtas_ld(args, 3);
+ unsigned int req_num = rtas_ld(args, 4); /* 0 == remove all */
+ unsigned int seq_num = rtas_ld(args, 5);
+ unsigned int ret_intr_type;
+ int ndev, irq;
+ sPAPRPHBState *phb = NULL;
+ PCIDevice *pdev = NULL;
+
+ switch (func) {
+ case RTAS_CHANGE_MSI_FN:
+ case RTAS_CHANGE_FN:
+ ret_intr_type = RTAS_TYPE_MSI;
+ break;
+ case RTAS_CHANGE_MSIX_FN:
+ ret_intr_type = RTAS_TYPE_MSIX;
+ break;
+ default:
+ fprintf(stderr, "rtas_ibm_change_msi(%u) is not implemented\n", func);
+ rtas_st(rets, 0, -3); /* Parameter error */
+ return;
+ }
- /* Initialize the LSI table */
- for (i = 0; i < SPAPR_PCI_NUM_LSI; i++) {
- qemu_irq qirq;
- uint32_t num;
+ /* Fins sPAPRPHBState */
+ phb = find_phb(spapr, buid);
+ if (phb) {
+ pdev = find_dev(spapr, buid, config_addr);
+ }
+ if (!phb || !pdev) {
+ rtas_st(rets, 0, -3); /* Parameter error */
+ return;
+ }
- qirq = spapr_allocate_irq(0, &num);
- if (!qirq) {
- return -1;
+ /* Releasing MSIs */
+ if (!req_num) {
+ ndev = spapr_msicfg_find(phb, config_addr, false);
+ if (ndev < 0) {
+ trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
+ rtas_st(rets, 0, -1); /* Hardware error */
+ return;
}
+ trace_spapr_pci_msi("Released MSIs", ndev, config_addr);
+ rtas_st(rets, 0, 0);
+ rtas_st(rets, 1, 0);
+ return;
+ }
+
+ /* Enabling MSI */
- phb->lsi_table[i].dt_irq = num;
- phb->lsi_table[i].qirq = qirq;
+ /* Find a device number in the map to add or reuse the existing one */
+ ndev = spapr_msicfg_find(phb, config_addr, true);
+ if (ndev >= SPAPR_MSIX_MAX_DEVS || ndev < 0) {
+ fprintf(stderr, "No free entry for a new MSI device\n");
+ rtas_st(rets, 0, -1); /* Hardware error */
+ return;
}
+ trace_spapr_pci_msi("Configuring MSI", ndev, config_addr);
- return 0;
-}
+ /* Check if there is an old config and MSI number has not changed */
+ if (phb->msi_table[ndev].nvec && (req_num != phb->msi_table[ndev].nvec)) {
+ /* Unexpected behaviour */
+ fprintf(stderr, "Cannot reuse MSI config for device#%d", ndev);
+ rtas_st(rets, 0, -1); /* Hardware error */
+ return;
+ }
-static int spapr_main_pci_host_init(PCIDevice *d)
-{
- return 0;
-}
+ /* There is no cached config, allocate MSIs */
+ if (!phb->msi_table[ndev].nvec) {
+ irq = spapr_allocate_irq_block(req_num, true);
+ if (irq < 0) {
+ fprintf(stderr, "Cannot allocate MSIs for device#%d", ndev);
+ rtas_st(rets, 0, -1); /* Hardware error */
+ return;
+ }
+ phb->msi_table[ndev].irq = irq;
+ phb->msi_table[ndev].nvec = req_num;
+ phb->msi_table[ndev].config_addr = config_addr;
+ }
-static void spapr_main_pci_host_class_init(ObjectClass *klass, void *data)
-{
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+ /* Setup MSI/MSIX vectors in the device (via cfgspace or MSIX BAR) */
+ spapr_msi_setmsg(pdev, phb->msi_win_addr | (ndev << 16),
+ ret_intr_type == RTAS_TYPE_MSIX, req_num);
- k->init = spapr_main_pci_host_init;
-}
+ rtas_st(rets, 0, 0);
+ rtas_st(rets, 1, req_num);
+ rtas_st(rets, 2, ++seq_num);
+ rtas_st(rets, 3, ret_intr_type);
-static TypeInfo spapr_main_pci_host_info = {
- .name = "spapr-pci-host-bridge-pci",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(PCIDevice),
- .class_init = spapr_main_pci_host_class_init,
-};
+ trace_spapr_pci_rtas_ibm_change_msi(func, req_num);
+}
-static void spapr_phb_class_init(ObjectClass *klass, void *data)
+static void rtas_ibm_query_interrupt_source_number(sPAPREnvironment *spapr,
+ uint32_t token,
+ uint32_t nargs,
+ target_ulong args,
+ uint32_t nret,
+ target_ulong rets)
{
- SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
+ uint32_t config_addr = rtas_ld(args, 0);
+ uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
+ unsigned int intr_src_num = -1, ioa_intr_num = rtas_ld(args, 3);
+ int ndev;
+ sPAPRPHBState *phb = NULL;
+
+ /* Fins sPAPRPHBState */
+ phb = find_phb(spapr, buid);
+ if (!phb) {
+ rtas_st(rets, 0, -3); /* Parameter error */
+ return;
+ }
- sdc->init = spapr_phb_init;
+ /* Find device descriptor and start IRQ */
+ ndev = spapr_msicfg_find(phb, config_addr, false);
+ if (ndev < 0) {
+ trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
+ rtas_st(rets, 0, -1); /* Hardware error */
+ return;
+ }
+
+ intr_src_num = phb->msi_table[ndev].irq + ioa_intr_num;
+ trace_spapr_pci_rtas_ibm_query_interrupt_source_number(ioa_intr_num,
+ intr_src_num);
+
+ rtas_st(rets, 0, 0);
+ rtas_st(rets, 1, intr_src_num);
+ rtas_st(rets, 2, 1);/* 0 == level; 1 == edge */
}
-static TypeInfo spapr_phb_info = {
- .name = "spapr-pci-host-bridge",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(sPAPRPHBState),
- .class_init = spapr_phb_class_init,
-};
+static int pci_spapr_swizzle(int slot, int pin)
+{
+ return (slot + pin) % PCI_NUM_PINS;
+}
-static void spapr_register_types(void)
+static int pci_spapr_map_irq(PCIDevice *pci_dev, int irq_num)
{
- type_register_static(&spapr_phb_info);
- type_register_static(&spapr_main_pci_host_info);
+ /*
+ * Here we need to convert pci_dev + irq_num to some unique value
+ * which is less than number of IRQs on the specific bus (4). We
+ * use standard PCI swizzling, that is (slot number + pin number)
+ * % 4.
+ */
+ return pci_spapr_swizzle(PCI_SLOT(pci_dev->devfn), irq_num);
}
-type_init(spapr_register_types)
+static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
+{
+ /*
+ * Here we use the number returned by pci_spapr_map_irq to find a
+ * corresponding qemu_irq.
+ */
+ sPAPRPHBState *phb = opaque;
-static uint64_t spapr_io_read(void *opaque, target_phys_addr_t addr,
+ trace_spapr_pci_lsi_set(phb->busname, irq_num, phb->lsi_table[irq_num].irq);
+ qemu_set_irq(spapr_phb_lsi_qirq(phb, irq_num), level);
+}
+
+static uint64_t spapr_io_read(void *opaque, hwaddr addr,
unsigned size)
{
switch (size) {
assert(0);
}
-static void spapr_io_write(void *opaque, target_phys_addr_t addr,
+static void spapr_io_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
switch (size) {
.write = spapr_io_write
};
-void spapr_create_phb(sPAPREnvironment *spapr,
- const char *busname, uint64_t buid,
- uint64_t mem_win_addr, uint64_t mem_win_size,
- uint64_t io_win_addr)
+/*
+ * MSI/MSIX memory region implementation.
+ * The handler handles both MSI and MSIX.
+ * For MSI-X, the vector number is encoded as a part of the address,
+ * data is set to 0.
+ * For MSI, the vector number is encoded in least bits in data.
+ */
+static void spapr_msi_write(void *opaque, hwaddr addr,
+ uint64_t data, unsigned size)
{
- DeviceState *dev;
- SysBusDevice *s;
- sPAPRPHBState *phb;
- PCIBus *bus;
- char namebuf[strlen(busname)+11];
+ sPAPRPHBState *phb = opaque;
+ int ndev = addr >> 16;
+ int vec = ((addr & 0xFFFF) >> 2) | data;
+ uint32_t irq = phb->msi_table[ndev].irq + vec;
- dev = qdev_create(NULL, "spapr-pci-host-bridge");
- qdev_init_nofail(dev);
- s = sysbus_from_qdev(dev);
- phb = FROM_SYSBUS(sPAPRPHBState, s);
+ trace_spapr_pci_msi_write(addr, data, irq);
- phb->mem_win_addr = mem_win_addr;
+ qemu_irq_pulse(xics_get_qirq(spapr->icp, irq));
+}
- sprintf(namebuf, "%s-mem", busname);
- memory_region_init(&phb->memspace, namebuf, INT64_MAX);
+static const MemoryRegionOps spapr_msi_ops = {
+ /* There is no .read as the read result is undefined by PCI spec */
+ .read = NULL,
+ .write = spapr_msi_write,
+ .endianness = DEVICE_LITTLE_ENDIAN
+};
- sprintf(namebuf, "%s-memwindow", busname);
- memory_region_init_alias(&phb->memwindow, namebuf, &phb->memspace,
- SPAPR_PCI_MEM_WIN_BUS_OFFSET, mem_win_size);
- memory_region_add_subregion(get_system_memory(), mem_win_addr,
- &phb->memwindow);
+/*
+ * PHB PCI device
+ */
+static DMAContext *spapr_pci_dma_context_fn(PCIBus *bus, void *opaque,
+ int devfn)
+{
+ sPAPRPHBState *phb = opaque;
- phb->io_win_addr = io_win_addr;
+ return phb->dma;
+}
+
+static int spapr_phb_init(SysBusDevice *s)
+{
+ sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
+ PCIHostState *phb = PCI_HOST_BRIDGE(s);
+ char *namebuf;
+ int i;
+ PCIBus *bus;
+
+ sphb->dtbusname = g_strdup_printf("pci@%" PRIx64, sphb->buid);
+ namebuf = alloca(strlen(sphb->dtbusname) + 32);
+
+ /* Initialize memory regions */
+ sprintf(namebuf, "%s.mmio", sphb->dtbusname);
+ memory_region_init(&sphb->memspace, namebuf, INT64_MAX);
+
+ sprintf(namebuf, "%s.mmio-alias", sphb->dtbusname);
+ memory_region_init_alias(&sphb->memwindow, namebuf, &sphb->memspace,
+ SPAPR_PCI_MEM_WIN_BUS_OFFSET, sphb->mem_win_size);
+ memory_region_add_subregion(get_system_memory(), sphb->mem_win_addr,
+ &sphb->memwindow);
/* On ppc, we only have MMIO no specific IO space from the CPU
* perspective. In theory we ought to be able to embed the PCI IO
* system io address space. This hack to bounce things via
* system_io works around the problem until all the users of
* old_portion are updated */
- sprintf(namebuf, "%s-io", busname);
- memory_region_init(&phb->iospace, namebuf, SPAPR_PCI_IO_WIN_SIZE);
+ sprintf(namebuf, "%s.io", sphb->dtbusname);
+ memory_region_init(&sphb->iospace, namebuf, SPAPR_PCI_IO_WIN_SIZE);
/* FIXME: fix to support multiple PHBs */
- memory_region_add_subregion(get_system_io(), 0, &phb->iospace);
+ memory_region_add_subregion(get_system_io(), 0, &sphb->iospace);
- sprintf(namebuf, "%s-iowindow", busname);
- memory_region_init_io(&phb->iowindow, &spapr_io_ops, phb,
+ sprintf(namebuf, "%s.io-alias", sphb->dtbusname);
+ memory_region_init_io(&sphb->iowindow, &spapr_io_ops, sphb,
namebuf, SPAPR_PCI_IO_WIN_SIZE);
- memory_region_add_subregion(get_system_memory(), io_win_addr,
- &phb->iowindow);
+ memory_region_add_subregion(get_system_memory(), sphb->io_win_addr,
+ &sphb->iowindow);
+
+ /* As MSI/MSIX interrupts trigger by writing at MSI/MSIX vectors,
+ * we need to allocate some memory to catch those writes coming
+ * from msi_notify()/msix_notify() */
+ if (msi_supported) {
+ sprintf(namebuf, "%s.msi", sphb->dtbusname);
+ memory_region_init_io(&sphb->msiwindow, &spapr_msi_ops, sphb,
+ namebuf, SPAPR_MSIX_MAX_DEVS * 0x10000);
+ memory_region_add_subregion(get_system_memory(), sphb->msi_win_addr,
+ &sphb->msiwindow);
+ }
- phb->host_state.bus = bus = pci_register_bus(&phb->busdev.qdev, busname,
- pci_spapr_set_irq,
- pci_spapr_map_irq,
- phb,
- &phb->memspace, &phb->iospace,
- PCI_DEVFN(0, 0),
- SPAPR_PCI_NUM_LSI);
+ bus = pci_register_bus(DEVICE(s),
+ sphb->busname ? sphb->busname : sphb->dtbusname,
+ pci_spapr_set_irq, pci_spapr_map_irq, sphb,
+ &sphb->memspace, &sphb->iospace,
+ PCI_DEVFN(0, 0), PCI_NUM_PINS);
+ phb->bus = bus;
- spapr_rtas_register("read-pci-config", rtas_read_pci_config);
- spapr_rtas_register("write-pci-config", rtas_write_pci_config);
- spapr_rtas_register("ibm,read-pci-config", rtas_ibm_read_pci_config);
- spapr_rtas_register("ibm,write-pci-config", rtas_ibm_write_pci_config);
+ sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN | (pci_find_domain(bus) << 16);
+ sphb->dma_window_start = 0;
+ sphb->dma_window_size = 0x40000000;
+ sphb->dma = spapr_tce_new_dma_context(sphb->dma_liobn, sphb->dma_window_size);
+ pci_setup_iommu(bus, spapr_pci_dma_context_fn, sphb);
+
+ QLIST_INSERT_HEAD(&spapr->phbs, sphb, list);
+
+ /* Initialize the LSI table */
+ for (i = 0; i < PCI_NUM_PINS; i++) {
+ uint32_t irq;
+
+ irq = spapr_allocate_lsi(0);
+ if (!irq) {
+ return -1;
+ }
+
+ sphb->lsi_table[i].irq = irq;
+ }
+
+ return 0;
+}
- QLIST_INSERT_HEAD(&spapr->phbs, phb, list);
+static void spapr_phb_reset(DeviceState *qdev)
+{
+ SysBusDevice *s = sysbus_from_qdev(qdev);
+ sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
+
+ /* Reset the IOMMU state */
+ spapr_tce_reset(sphb->dma);
+}
+
+static Property spapr_phb_properties[] = {
+ DEFINE_PROP_HEX64("buid", sPAPRPHBState, buid, 0),
+ DEFINE_PROP_STRING("busname", sPAPRPHBState, busname),
+ DEFINE_PROP_HEX64("mem_win_addr", sPAPRPHBState, mem_win_addr, 0),
+ DEFINE_PROP_HEX64("mem_win_size", sPAPRPHBState, mem_win_size, 0x20000000),
+ DEFINE_PROP_HEX64("io_win_addr", sPAPRPHBState, io_win_addr, 0),
+ DEFINE_PROP_HEX64("io_win_size", sPAPRPHBState, io_win_size, 0x10000),
+ DEFINE_PROP_HEX64("msi_win_addr", sPAPRPHBState, msi_win_addr, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void spapr_phb_class_init(ObjectClass *klass, void *data)
+{
+ SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
- /* pci_bus_set_mem_base(bus, mem_va_start - SPAPR_PCI_MEM_BAR_START); */
+ sdc->init = spapr_phb_init;
+ dc->props = spapr_phb_properties;
+ dc->reset = spapr_phb_reset;
+}
+
+static const TypeInfo spapr_phb_info = {
+ .name = TYPE_SPAPR_PCI_HOST_BRIDGE,
+ .parent = TYPE_PCI_HOST_BRIDGE,
+ .instance_size = sizeof(sPAPRPHBState),
+ .class_init = spapr_phb_class_init,
+};
+
+void spapr_create_phb(sPAPREnvironment *spapr,
+ const char *busname, uint64_t buid,
+ uint64_t mem_win_addr, uint64_t mem_win_size,
+ uint64_t io_win_addr, uint64_t msi_win_addr)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, TYPE_SPAPR_PCI_HOST_BRIDGE);
+
+ if (busname) {
+ qdev_prop_set_string(dev, "busname", g_strdup(busname));
+ }
+ qdev_prop_set_uint64(dev, "buid", buid);
+ qdev_prop_set_uint64(dev, "mem_win_addr", mem_win_addr);
+ qdev_prop_set_uint64(dev, "mem_win_size", mem_win_size);
+ qdev_prop_set_uint64(dev, "io_win_addr", io_win_addr);
+ qdev_prop_set_uint64(dev, "msi_win_addr", msi_win_addr);
+
+ qdev_init_nofail(dev);
}
/* Macros to operate with address in OF binding to PCI */
#define b_fff(x) b_x((x), 8, 3) /* function number */
#define b_rrrrrrrr(x) b_x((x), 0, 8) /* register number */
-int spapr_populate_pci_devices(sPAPRPHBState *phb,
- uint32_t xics_phandle,
- void *fdt)
+int spapr_populate_pci_dt(sPAPRPHBState *phb,
+ uint32_t xics_phandle,
+ void *fdt)
{
- PCIBus *bus = phb->host_state.bus;
- int bus_off, i;
+ int bus_off, i, j;
char nodename[256];
uint32_t bus_range[] = { cpu_to_be32(0), cpu_to_be32(0xff) };
struct {
uint64_t child;
uint64_t parent;
uint64_t size;
- } __attribute__((packed)) ranges[] = {
+ } QEMU_PACKED ranges[] = {
{
cpu_to_be32(b_ss(1)), cpu_to_be64(0),
cpu_to_be64(phb->io_win_addr),
};
uint64_t bus_reg[] = { cpu_to_be64(phb->buid), 0 };
uint32_t interrupt_map_mask[] = {
- cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, 0x0};
- uint32_t interrupt_map[bus->nirq][7];
+ cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, cpu_to_be32(-1)};
+ uint32_t interrupt_map[PCI_SLOT_MAX * PCI_NUM_PINS][7];
/* Start populating the FDT */
sprintf(nodename, "pci@%" PRIx64, phb->buid);
*/
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask",
&interrupt_map_mask, sizeof(interrupt_map_mask)));
- for (i = 0; i < 7; i++) {
- uint32_t *irqmap = interrupt_map[i];
- irqmap[0] = cpu_to_be32(b_ddddd(i)|b_fff(0));
- irqmap[1] = 0;
- irqmap[2] = 0;
- irqmap[3] = 0;
- irqmap[4] = cpu_to_be32(xics_phandle);
- irqmap[5] = cpu_to_be32(phb->lsi_table[i % SPAPR_PCI_NUM_LSI].dt_irq);
- irqmap[6] = cpu_to_be32(0x8);
+ for (i = 0; i < PCI_SLOT_MAX; i++) {
+ for (j = 0; j < PCI_NUM_PINS; j++) {
+ uint32_t *irqmap = interrupt_map[i*PCI_NUM_PINS + j];
+ int lsi_num = pci_spapr_swizzle(i, j);
+
+ irqmap[0] = cpu_to_be32(b_ddddd(i)|b_fff(0));
+ irqmap[1] = 0;
+ irqmap[2] = 0;
+ irqmap[3] = cpu_to_be32(j+1);
+ irqmap[4] = cpu_to_be32(xics_phandle);
+ irqmap[5] = cpu_to_be32(phb->lsi_table[lsi_num].irq);
+ irqmap[6] = cpu_to_be32(0x8);
+ }
}
/* Write interrupt map */
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
- 7 * sizeof(interrupt_map[0])));
+ sizeof(interrupt_map)));
+
+ spapr_dma_dt(fdt, bus_off, "ibm,dma-window",
+ phb->dma_liobn, phb->dma_window_start,
+ phb->dma_window_size);
return 0;
}
+
+void spapr_pci_rtas_init(void)
+{
+ spapr_rtas_register("read-pci-config", rtas_read_pci_config);
+ spapr_rtas_register("write-pci-config", rtas_write_pci_config);
+ spapr_rtas_register("ibm,read-pci-config", rtas_ibm_read_pci_config);
+ spapr_rtas_register("ibm,write-pci-config", rtas_ibm_write_pci_config);
+ if (msi_supported) {
+ spapr_rtas_register("ibm,query-interrupt-source-number",
+ rtas_ibm_query_interrupt_source_number);
+ spapr_rtas_register("ibm,change-msi", rtas_ibm_change_msi);
+ }
+}
+
+static void spapr_pci_register_types(void)
+{
+ type_register_static(&spapr_phb_info);
+}
+
+type_init(spapr_pci_register_types)
projects / mirror_qemu.git / blobdiff