#include "hw/pci_internals.h"
-static const uint32_t bars[] = {
- PCI_BASE_ADDRESS_0, PCI_BASE_ADDRESS_1,
- PCI_BASE_ADDRESS_2, PCI_BASE_ADDRESS_3,
- PCI_BASE_ADDRESS_4, PCI_BASE_ADDRESS_5
- /*, PCI_ROM_ADDRESS*/
-};
-
static PCIDevice *find_dev(sPAPREnvironment *spapr,
uint64_t buid, uint32_t config_addr)
{
return NULL;
}
+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 void finish_read_pci_config(sPAPREnvironment *spapr, uint64_t buid,
+ uint32_t addr, uint32_t size,
+ target_ulong rets)
+{
+ 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;
+ }
+
+ 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,
uint32_t token, uint32_t nargs,
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_ld(args, 0) & 0xFF;
- val = pci_default_read_config(dev, addr, 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_ld(args, 0) & 0xFF;
- val = pci_default_read_config(dev, addr, 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_ld(args, 0) & 0xFF;
- pci_default_write_config(dev, addr, 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_ld(args, 0) & 0xFF;
- pci_default_write_config(dev, addr, 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_swizzle(int slot, int pin)
+{
+ return (slot + pin) % PCI_NUM_PINS;
}
static int pci_spapr_map_irq(PCIDevice *pci_dev, int irq_num)
{
/*
* 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
+ * 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_dev->devfn >> 3) % SPAPR_PCI_NUM_LSI;
+ return pci_spapr_swizzle(PCI_SLOT(pci_dev->devfn), irq_num);
}
static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
qemu_set_irq(phb->lsi_table[irq_num].qirq, level);
}
-static int spapr_phb_init(SysBusDevice *s)
-{
- sPAPRPHBState *phb = FROM_SYSBUS(sPAPRPHBState, s);
- int i;
-
- /* Initialize the LSI table */
- for (i = 0; i < SPAPR_PCI_NUM_LSI; i++) {
- qemu_irq qirq;
- uint32_t num;
-
- qirq = spapr_allocate_irq(0, &num);
- if (!qirq) {
- return -1;
- }
-
- phb->lsi_table[i].dt_irq = num;
- phb->lsi_table[i].qirq = qirq;
- }
-
- return 0;
-}
-
-static int spapr_main_pci_host_init(PCIDevice *d)
-{
- return 0;
-}
-
-static PCIDeviceInfo spapr_main_pci_host_info = {
- .qdev.name = "spapr-pci-host-bridge",
- .qdev.size = sizeof(PCIDevice),
- .init = spapr_main_pci_host_init,
-};
-
-static void spapr_register_devices(void)
-{
- sysbus_register_dev("spapr-pci-host-bridge", sizeof(sPAPRPHBState),
- spapr_phb_init);
- pci_qdev_register(&spapr_main_pci_host_info);
-}
-
-device_init(spapr_register_devices)
-
static uint64_t spapr_io_read(void *opaque, target_phys_addr_t addr,
unsigned size)
{
assert(0);
}
-static MemoryRegionOps spapr_io_ops = {
+static const MemoryRegionOps spapr_io_ops = {
.endianness = DEVICE_LITTLE_ENDIAN,
.read = spapr_io_read,
.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)
+/*
+ * PHB PCI device
+ */
+static int spapr_phb_init(SysBusDevice *s)
{
- DeviceState *dev;
- SysBusDevice *s;
- sPAPRPHBState *phb;
+ sPAPRPHBState *phb = FROM_SYSBUS(sPAPRPHBState, s);
+ char *namebuf;
+ int i;
PCIBus *bus;
- char namebuf[strlen(busname)+11];
-
- dev = qdev_create(NULL, "spapr-pci-host-bridge");
- qdev_init_nofail(dev);
- s = sysbus_from_qdev(dev);
- phb = FROM_SYSBUS(sPAPRPHBState, s);
- phb->mem_win_addr = mem_win_addr;
+ phb->dtbusname = g_strdup_printf("pci@%" PRIx64, phb->buid);
+ namebuf = alloca(strlen(phb->dtbusname) + 32);
- sprintf(namebuf, "%s-mem", busname);
+ /* Initialize memory regions */
+ sprintf(namebuf, "%s.mmio", phb->dtbusname);
memory_region_init(&phb->memspace, namebuf, INT64_MAX);
- sprintf(namebuf, "%s-memwindow", busname);
+ sprintf(namebuf, "%s.mmio-alias", phb->dtbusname);
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,
+ SPAPR_PCI_MEM_WIN_BUS_OFFSET, phb->mem_win_size);
+ memory_region_add_subregion(get_system_memory(), phb->mem_win_addr,
&phb->memwindow);
- phb->io_win_addr = io_win_addr;
-
/* 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
* memory region direction in the system memory space. However,
* 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);
+ sprintf(namebuf, "%s.io", phb->dtbusname);
memory_region_init(&phb->iospace, namebuf, SPAPR_PCI_IO_WIN_SIZE);
/* FIXME: fix to support multiple PHBs */
memory_region_add_subregion(get_system_io(), 0, &phb->iospace);
- sprintf(namebuf, "%s-iowindow", busname);
+ sprintf(namebuf, "%s.io-alias", phb->dtbusname);
memory_region_init_io(&phb->iowindow, &spapr_io_ops, phb,
namebuf, SPAPR_PCI_IO_WIN_SIZE);
- memory_region_add_subregion(get_system_memory(), io_win_addr,
+ memory_region_add_subregion(get_system_memory(), phb->io_win_addr,
&phb->iowindow);
- 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(&phb->busdev.qdev,
+ phb->busname ? phb->busname : phb->dtbusname,
+ pci_spapr_set_irq, pci_spapr_map_irq, phb,
+ &phb->memspace, &phb->iospace,
+ PCI_DEVFN(0, 0), PCI_NUM_PINS);
+ phb->host_state.bus = bus;
+
+ QLIST_INSERT_HEAD(&spapr->phbs, phb, list);
+
+ /* Initialize the LSI table */
+ for (i = 0; i < PCI_NUM_PINS; i++) {
+ qemu_irq qirq;
+ uint32_t num;
+
+ qirq = spapr_allocate_lsi(0, &num);
+ if (!qirq) {
+ return -1;
+ }
+
+ phb->lsi_table[i].dt_irq = num;
+ phb->lsi_table[i].qirq = qirq;
+ }
+
+ return 0;
+}
+
+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_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);
+
+ sdc->init = spapr_phb_init;
+ dc->props = spapr_phb_properties;
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);
+}
- QLIST_INSERT_HEAD(&spapr->phbs, phb, list);
+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,
+};
+
+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)
+{
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, spapr_phb_info.name);
- /* pci_bus_set_mem_base(bus, mem_va_start - SPAPR_PCI_MEM_BAR_START); */
+ 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_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 */
-static uint32_t regtype_to_ss(uint8_t type)
-{
- if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
- return 3;
- }
- if (type == PCI_BASE_ADDRESS_SPACE_IO) {
- return 1;
- }
- return 2;
-}
-
int spapr_populate_pci_devices(sPAPRPHBState *phb,
uint32_t xics_phandle,
void *fdt)
{
- PCIBus *bus = phb->host_state.bus;
- int bus_off, node_off = 0, devid, fn, i, n, devices;
- DeviceState *qdev;
+ int bus_off, i, j;
char nodename[256];
- struct {
- uint32_t hi;
- uint64_t addr;
- uint64_t size;
- } __attribute__((packed)) reg[PCI_NUM_REGIONS + 1],
- assigned_addresses[PCI_NUM_REGIONS];
uint32_t bus_range[] = { cpu_to_be32(0), cpu_to_be32(0xff) };
struct {
uint32_t hi;
};
uint64_t bus_reg[] = { cpu_to_be64(phb->buid), 0 };
uint32_t interrupt_map_mask[] = {
- cpu_to_be32(b_ddddd(-1)|b_fff(-1)), 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, "bus-range", &bus_range, sizeof(bus_range)));
_FDT(fdt_setprop(fdt, bus_off, "ranges", &ranges, sizeof(ranges)));
_FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg)));
+ _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1));
+
+ /* Build the interrupt-map, this must matches what is done
+ * in pci_spapr_map_irq
+ */
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask",
&interrupt_map_mask, sizeof(interrupt_map_mask)));
-
- /* Populate PCI devices and allocate IRQs */
- devices = 0;
- QTAILQ_FOREACH(qdev, &bus->qbus.children, sibling) {
- PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
- int irq_index = pci_spapr_map_irq(dev, 0);
- uint32_t *irqmap = interrupt_map[devices];
- uint8_t *config = dev->config;
-
- devid = dev->devfn >> 3;
- fn = dev->devfn & 7;
-
- sprintf(nodename, "pci@%u,%u", devid, fn);
-
- /* Allocate interrupt from the map */
- if (devid > bus->nirq) {
- printf("Unexpected behaviour in spapr_populate_pci_devices,"
- "wrong devid %u\n", devid);
- exit(-1);
+ 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].dt_irq);
+ irqmap[6] = cpu_to_be32(0x8);
}
- irqmap[0] = cpu_to_be32(b_ddddd(devid)|b_fff(fn));
- irqmap[1] = 0;
- irqmap[2] = 0;
- irqmap[3] = 0;
- irqmap[4] = cpu_to_be32(xics_phandle);
- irqmap[5] = cpu_to_be32(phb->lsi_table[irq_index].dt_irq);
- irqmap[6] = cpu_to_be32(0x8);
-
- /* Add node to FDT */
- node_off = fdt_add_subnode(fdt, bus_off, nodename);
- if (node_off < 0) {
- return node_off;
- }
-
- _FDT(fdt_setprop_cell(fdt, node_off, "vendor-id",
- pci_get_word(&config[PCI_VENDOR_ID])));
- _FDT(fdt_setprop_cell(fdt, node_off, "device-id",
- pci_get_word(&config[PCI_DEVICE_ID])));
- _FDT(fdt_setprop_cell(fdt, node_off, "revision-id",
- pci_get_byte(&config[PCI_REVISION_ID])));
- _FDT(fdt_setprop_cell(fdt, node_off, "class-code",
- pci_get_long(&config[PCI_CLASS_REVISION]) >> 8));
- _FDT(fdt_setprop_cell(fdt, node_off, "subsystem-id",
- pci_get_word(&config[PCI_SUBSYSTEM_ID])));
- _FDT(fdt_setprop_cell(fdt, node_off, "subsystem-vendor-id",
- pci_get_word(&config[PCI_SUBSYSTEM_VENDOR_ID])));
-
- /* Config space region comes first */
- reg[0].hi = cpu_to_be32(
- b_n(0) |
- b_p(0) |
- b_t(0) |
- b_ss(0/*config*/) |
- b_bbbbbbbb(0) |
- b_ddddd(devid) |
- b_fff(fn));
- reg[0].addr = 0;
- reg[0].size = 0;
-
- n = 0;
- for (i = 0; i < PCI_NUM_REGIONS; ++i) {
- if (0 == dev->io_regions[i].size) {
- continue;
- }
-
- reg[n+1].hi = cpu_to_be32(
- b_n(0) |
- b_p(0) |
- b_t(0) |
- b_ss(regtype_to_ss(dev->io_regions[i].type)) |
- b_bbbbbbbb(0) |
- b_ddddd(devid) |
- b_fff(fn) |
- b_rrrrrrrr(bars[i]));
- reg[n+1].addr = 0;
- reg[n+1].size = cpu_to_be64(dev->io_regions[i].size);
-
- assigned_addresses[n].hi = cpu_to_be32(
- b_n(1) |
- b_p(0) |
- b_t(0) |
- b_ss(regtype_to_ss(dev->io_regions[i].type)) |
- b_bbbbbbbb(0) |
- b_ddddd(devid) |
- b_fff(fn) |
- b_rrrrrrrr(bars[i]));
-
- /*
- * Writing zeroes to assigned_addresses causes the guest kernel to
- * reassign BARs
- */
- assigned_addresses[n].addr = cpu_to_be64(dev->io_regions[i].addr);
- assigned_addresses[n].size = reg[n+1].size;
-
- ++n;
- }
- _FDT(fdt_setprop(fdt, node_off, "reg", reg, sizeof(reg[0])*(n+1)));
- _FDT(fdt_setprop(fdt, node_off, "assigned-addresses",
- assigned_addresses,
- sizeof(assigned_addresses[0])*(n)));
- _FDT(fdt_setprop_cell(fdt, node_off, "interrupts",
- pci_get_byte(&config[PCI_INTERRUPT_PIN])));
-
- ++devices;
}
-
/* Write interrupt map */
_FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
- devices * sizeof(interrupt_map[0])));
+ sizeof(interrupt_map)));
return 0;
}
+
+static void register_types(void)
+{
+ type_register_static(&spapr_phb_info);
+}
+type_init(register_types)
projects / mirror_qemu.git / blobdiff