2 * QEMU sPAPR PCI host originated from Uninorth PCI host
4 * Copyright (c) 2011 Alexey Kardashevskiy, IBM Corporation.
5 * Copyright (C) 2011 David Gibson, IBM Corporation.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "hw/pci/pci.h"
27 #include "hw/pci/msi.h"
28 #include "hw/pci/msix.h"
29 #include "hw/pci/pci_host.h"
30 #include "hw/ppc/spapr.h"
31 #include "hw/pci-host/spapr.h"
32 #include "exec/address-spaces.h"
35 #include "qemu/error-report.h"
37 #include "hw/pci/pci_bus.h"
39 /* Copied from the kernel arch/powerpc/platforms/pseries/msi.c */
40 #define RTAS_QUERY_FN 0
41 #define RTAS_CHANGE_FN 1
42 #define RTAS_RESET_FN 2
43 #define RTAS_CHANGE_MSI_FN 3
44 #define RTAS_CHANGE_MSIX_FN 4
46 /* Interrupt types to return on RTAS_CHANGE_* */
47 #define RTAS_TYPE_MSI 1
48 #define RTAS_TYPE_MSIX 2
50 static sPAPRPHBState *find_phb(sPAPREnvironment *spapr, uint64_t buid)
54 QLIST_FOREACH(sphb, &spapr->phbs, list) {
55 if (sphb->buid != buid) {
64 static PCIDevice *find_dev(sPAPREnvironment *spapr, uint64_t buid,
67 sPAPRPHBState *sphb = find_phb(spapr, buid);
68 PCIHostState *phb = PCI_HOST_BRIDGE(sphb);
69 int bus_num = (config_addr >> 16) & 0xFF;
70 int devfn = (config_addr >> 8) & 0xFF;
76 return pci_find_device(phb->bus, bus_num, devfn);
79 static uint32_t rtas_pci_cfgaddr(uint32_t arg)
81 /* This handles the encoding of extended config space addresses */
82 return ((arg >> 20) & 0xf00) | (arg & 0xff);
85 static void finish_read_pci_config(sPAPREnvironment *spapr, uint64_t buid,
86 uint32_t addr, uint32_t size,
92 if ((size != 1) && (size != 2) && (size != 4)) {
93 /* access must be 1, 2 or 4 bytes */
94 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
98 pci_dev = find_dev(spapr, buid, addr);
99 addr = rtas_pci_cfgaddr(addr);
101 if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
102 /* Access must be to a valid device, within bounds and
103 * naturally aligned */
104 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
108 val = pci_host_config_read_common(pci_dev, addr,
109 pci_config_size(pci_dev), size);
111 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
112 rtas_st(rets, 1, val);
115 static void rtas_ibm_read_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
116 uint32_t token, uint32_t nargs,
118 uint32_t nret, target_ulong rets)
123 if ((nargs != 4) || (nret != 2)) {
124 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
128 buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
129 size = rtas_ld(args, 3);
130 addr = rtas_ld(args, 0);
132 finish_read_pci_config(spapr, buid, addr, size, rets);
135 static void rtas_read_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
136 uint32_t token, uint32_t nargs,
138 uint32_t nret, target_ulong rets)
142 if ((nargs != 2) || (nret != 2)) {
143 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
147 size = rtas_ld(args, 1);
148 addr = rtas_ld(args, 0);
150 finish_read_pci_config(spapr, 0, addr, size, rets);
153 static void finish_write_pci_config(sPAPREnvironment *spapr, uint64_t buid,
154 uint32_t addr, uint32_t size,
155 uint32_t val, target_ulong rets)
159 if ((size != 1) && (size != 2) && (size != 4)) {
160 /* access must be 1, 2 or 4 bytes */
161 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
165 pci_dev = find_dev(spapr, buid, addr);
166 addr = rtas_pci_cfgaddr(addr);
168 if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
169 /* Access must be to a valid device, within bounds and
170 * naturally aligned */
171 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
175 pci_host_config_write_common(pci_dev, addr, pci_config_size(pci_dev),
178 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
181 static void rtas_ibm_write_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
182 uint32_t token, uint32_t nargs,
184 uint32_t nret, target_ulong rets)
187 uint32_t val, size, addr;
189 if ((nargs != 5) || (nret != 1)) {
190 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
194 buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
195 val = rtas_ld(args, 4);
196 size = rtas_ld(args, 3);
197 addr = rtas_ld(args, 0);
199 finish_write_pci_config(spapr, buid, addr, size, val, rets);
202 static void rtas_write_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
203 uint32_t token, uint32_t nargs,
205 uint32_t nret, target_ulong rets)
207 uint32_t val, size, addr;
209 if ((nargs != 3) || (nret != 1)) {
210 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
215 val = rtas_ld(args, 2);
216 size = rtas_ld(args, 1);
217 addr = rtas_ld(args, 0);
219 finish_write_pci_config(spapr, 0, addr, size, val, rets);
223 * Find an entry with config_addr or returns the empty one if not found AND
225 * At the moment the msi_table entries are never released so there is
226 * no point to look till the end of the list if we need to find the free entry.
228 static int spapr_msicfg_find(sPAPRPHBState *phb, uint32_t config_addr,
233 for (i = 0; i < SPAPR_MSIX_MAX_DEVS; ++i) {
234 if (!phb->msi_table[i].nvec) {
237 if (phb->msi_table[i].config_addr == config_addr) {
241 if ((i < SPAPR_MSIX_MAX_DEVS) && alloc_new) {
242 trace_spapr_pci_msi("Allocating new MSI config", i, config_addr);
250 * Set MSI/MSIX message data.
251 * This is required for msi_notify()/msix_notify() which
252 * will write at the addresses via spapr_msi_write().
254 static void spapr_msi_setmsg(PCIDevice *pdev, hwaddr addr, bool msix,
255 unsigned first_irq, unsigned req_num)
258 MSIMessage msg = { .address = addr, .data = first_irq };
261 msi_set_message(pdev, msg);
262 trace_spapr_pci_msi_setup(pdev->name, 0, msg.address);
266 for (i = 0; i < req_num; ++i, ++msg.data) {
267 msix_set_message(pdev, i, msg);
268 trace_spapr_pci_msi_setup(pdev->name, i, msg.address);
272 static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPREnvironment *spapr,
273 uint32_t token, uint32_t nargs,
274 target_ulong args, uint32_t nret,
277 uint32_t config_addr = rtas_ld(args, 0);
278 uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
279 unsigned int func = rtas_ld(args, 3);
280 unsigned int req_num = rtas_ld(args, 4); /* 0 == remove all */
281 unsigned int seq_num = rtas_ld(args, 5);
282 unsigned int ret_intr_type;
283 int ndev, irq, max_irqs = 0;
284 sPAPRPHBState *phb = NULL;
285 PCIDevice *pdev = NULL;
288 case RTAS_CHANGE_MSI_FN:
290 ret_intr_type = RTAS_TYPE_MSI;
292 case RTAS_CHANGE_MSIX_FN:
293 ret_intr_type = RTAS_TYPE_MSIX;
296 error_report("rtas_ibm_change_msi(%u) is not implemented", func);
297 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
301 /* Fins sPAPRPHBState */
302 phb = find_phb(spapr, buid);
304 pdev = find_dev(spapr, buid, config_addr);
307 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
313 ndev = spapr_msicfg_find(phb, config_addr, false);
315 trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
316 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
319 trace_spapr_pci_msi("Released MSIs", ndev, config_addr);
320 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
327 /* Find a device number in the map to add or reuse the existing one */
328 ndev = spapr_msicfg_find(phb, config_addr, true);
329 if (ndev >= SPAPR_MSIX_MAX_DEVS || ndev < 0) {
330 error_report("No free entry for a new MSI device");
331 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
334 trace_spapr_pci_msi("Configuring MSI", ndev, config_addr);
336 /* Check if the device supports as many IRQs as requested */
337 if (ret_intr_type == RTAS_TYPE_MSI) {
338 max_irqs = msi_nr_vectors_allocated(pdev);
339 } else if (ret_intr_type == RTAS_TYPE_MSIX) {
340 max_irqs = pdev->msix_entries_nr;
343 error_report("Requested interrupt type %d is not enabled for device#%d",
344 ret_intr_type, ndev);
345 rtas_st(rets, 0, -1); /* Hardware error */
348 /* Correct the number if the guest asked for too many */
349 if (req_num > max_irqs) {
353 /* Check if there is an old config and MSI number has not changed */
354 if (phb->msi_table[ndev].nvec && (req_num != phb->msi_table[ndev].nvec)) {
355 /* Unexpected behaviour */
356 error_report("Cannot reuse MSI config for device#%d", ndev);
357 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
361 /* There is no cached config, allocate MSIs */
362 if (!phb->msi_table[ndev].nvec) {
363 irq = spapr_allocate_irq_block(req_num, false,
364 ret_intr_type == RTAS_TYPE_MSI);
366 error_report("Cannot allocate MSIs for device#%d", ndev);
367 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
370 phb->msi_table[ndev].irq = irq;
371 phb->msi_table[ndev].nvec = req_num;
372 phb->msi_table[ndev].config_addr = config_addr;
375 /* Setup MSI/MSIX vectors in the device (via cfgspace or MSIX BAR) */
376 spapr_msi_setmsg(pdev, spapr->msi_win_addr, ret_intr_type == RTAS_TYPE_MSIX,
377 phb->msi_table[ndev].irq, req_num);
379 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
380 rtas_st(rets, 1, req_num);
381 rtas_st(rets, 2, ++seq_num);
382 rtas_st(rets, 3, ret_intr_type);
384 trace_spapr_pci_rtas_ibm_change_msi(func, req_num);
387 static void rtas_ibm_query_interrupt_source_number(PowerPCCPU *cpu,
388 sPAPREnvironment *spapr,
395 uint32_t config_addr = rtas_ld(args, 0);
396 uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
397 unsigned int intr_src_num = -1, ioa_intr_num = rtas_ld(args, 3);
399 sPAPRPHBState *phb = NULL;
401 /* Fins sPAPRPHBState */
402 phb = find_phb(spapr, buid);
404 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
408 /* Find device descriptor and start IRQ */
409 ndev = spapr_msicfg_find(phb, config_addr, false);
411 trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
412 rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
416 intr_src_num = phb->msi_table[ndev].irq + ioa_intr_num;
417 trace_spapr_pci_rtas_ibm_query_interrupt_source_number(ioa_intr_num,
420 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
421 rtas_st(rets, 1, intr_src_num);
422 rtas_st(rets, 2, 1);/* 0 == level; 1 == edge */
425 static int pci_spapr_swizzle(int slot, int pin)
427 return (slot + pin) % PCI_NUM_PINS;
430 static int pci_spapr_map_irq(PCIDevice *pci_dev, int irq_num)
433 * Here we need to convert pci_dev + irq_num to some unique value
434 * which is less than number of IRQs on the specific bus (4). We
435 * use standard PCI swizzling, that is (slot number + pin number)
438 return pci_spapr_swizzle(PCI_SLOT(pci_dev->devfn), irq_num);
441 static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
444 * Here we use the number returned by pci_spapr_map_irq to find a
445 * corresponding qemu_irq.
447 sPAPRPHBState *phb = opaque;
449 trace_spapr_pci_lsi_set(phb->dtbusname, irq_num, phb->lsi_table[irq_num].irq);
450 qemu_set_irq(spapr_phb_lsi_qirq(phb, irq_num), level);
453 static PCIINTxRoute spapr_route_intx_pin_to_irq(void *opaque, int pin)
455 sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(opaque);
458 route.mode = PCI_INTX_ENABLED;
459 route.irq = sphb->lsi_table[pin].irq;
465 * MSI/MSIX memory region implementation.
466 * The handler handles both MSI and MSIX.
467 * For MSI-X, the vector number is encoded as a part of the address,
469 * For MSI, the vector number is encoded in least bits in data.
471 static void spapr_msi_write(void *opaque, hwaddr addr,
472 uint64_t data, unsigned size)
476 trace_spapr_pci_msi_write(addr, data, irq);
478 qemu_irq_pulse(xics_get_qirq(spapr->icp, irq));
481 static const MemoryRegionOps spapr_msi_ops = {
482 /* There is no .read as the read result is undefined by PCI spec */
484 .write = spapr_msi_write,
485 .endianness = DEVICE_LITTLE_ENDIAN
488 void spapr_pci_msi_init(sPAPREnvironment *spapr, hwaddr addr)
490 uint64_t window_size = 4096;
493 * As MSI/MSIX interrupts trigger by writing at MSI/MSIX vectors,
494 * we need to allocate some memory to catch those writes coming
495 * from msi_notify()/msix_notify().
496 * As MSIMessage:addr is going to be the same and MSIMessage:data
497 * is going to be a VIRQ number, 4 bytes of the MSI MR will only
500 * For KVM we want to ensure that this memory is a full page so that
501 * our memory slot is of page size granularity.
505 window_size = getpagesize();
509 spapr->msi_win_addr = addr;
510 memory_region_init_io(&spapr->msiwindow, NULL, &spapr_msi_ops, spapr,
512 memory_region_add_subregion(get_system_memory(), spapr->msi_win_addr,
519 static AddressSpace *spapr_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
521 sPAPRPHBState *phb = opaque;
523 return &phb->iommu_as;
526 static void spapr_phb_realize(DeviceState *dev, Error **errp)
528 SysBusDevice *s = SYS_BUS_DEVICE(dev);
529 sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
530 PCIHostState *phb = PCI_HOST_BRIDGE(s);
531 sPAPRPHBClass *info = SPAPR_PCI_HOST_BRIDGE_GET_CLASS(s);
536 if (sphb->index != -1) {
539 if ((sphb->buid != -1) || (sphb->dma_liobn != -1)
540 || (sphb->mem_win_addr != -1)
541 || (sphb->io_win_addr != -1)) {
542 error_setg(errp, "Either \"index\" or other parameters must"
543 " be specified for PAPR PHB, not both");
547 sphb->buid = SPAPR_PCI_BASE_BUID + sphb->index;
548 sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN + sphb->index;
550 windows_base = SPAPR_PCI_WINDOW_BASE
551 + sphb->index * SPAPR_PCI_WINDOW_SPACING;
552 sphb->mem_win_addr = windows_base + SPAPR_PCI_MMIO_WIN_OFF;
553 sphb->io_win_addr = windows_base + SPAPR_PCI_IO_WIN_OFF;
556 if (sphb->buid == -1) {
557 error_setg(errp, "BUID not specified for PHB");
561 if (sphb->dma_liobn == -1) {
562 error_setg(errp, "LIOBN not specified for PHB");
566 if (sphb->mem_win_addr == -1) {
567 error_setg(errp, "Memory window address not specified for PHB");
571 if (sphb->io_win_addr == -1) {
572 error_setg(errp, "IO window address not specified for PHB");
576 if (find_phb(spapr, sphb->buid)) {
577 error_setg(errp, "PCI host bridges must have unique BUIDs");
581 sphb->dtbusname = g_strdup_printf("pci@%" PRIx64, sphb->buid);
583 namebuf = alloca(strlen(sphb->dtbusname) + 32);
585 /* Initialize memory regions */
586 sprintf(namebuf, "%s.mmio", sphb->dtbusname);
587 memory_region_init(&sphb->memspace, OBJECT(sphb), namebuf, UINT64_MAX);
589 sprintf(namebuf, "%s.mmio-alias", sphb->dtbusname);
590 memory_region_init_alias(&sphb->memwindow, OBJECT(sphb),
591 namebuf, &sphb->memspace,
592 SPAPR_PCI_MEM_WIN_BUS_OFFSET, sphb->mem_win_size);
593 memory_region_add_subregion(get_system_memory(), sphb->mem_win_addr,
596 /* Initialize IO regions */
597 sprintf(namebuf, "%s.io", sphb->dtbusname);
598 memory_region_init(&sphb->iospace, OBJECT(sphb),
599 namebuf, SPAPR_PCI_IO_WIN_SIZE);
601 sprintf(namebuf, "%s.io-alias", sphb->dtbusname);
602 memory_region_init_alias(&sphb->iowindow, OBJECT(sphb), namebuf,
603 &sphb->iospace, 0, SPAPR_PCI_IO_WIN_SIZE);
604 memory_region_add_subregion(get_system_memory(), sphb->io_win_addr,
607 bus = pci_register_bus(dev, NULL,
608 pci_spapr_set_irq, pci_spapr_map_irq, sphb,
609 &sphb->memspace, &sphb->iospace,
610 PCI_DEVFN(0, 0), PCI_NUM_PINS, TYPE_PCI_BUS);
614 * Initialize PHB address space.
615 * By default there will be at least one subregion for default
617 * Later the guest might want to create another DMA window
618 * which will become another memory subregion.
620 sprintf(namebuf, "%s.iommu-root", sphb->dtbusname);
622 memory_region_init(&sphb->iommu_root, OBJECT(sphb),
623 namebuf, UINT64_MAX);
624 address_space_init(&sphb->iommu_as, &sphb->iommu_root,
627 pci_setup_iommu(bus, spapr_pci_dma_iommu, sphb);
629 pci_bus_set_route_irq_fn(bus, spapr_route_intx_pin_to_irq);
631 QLIST_INSERT_HEAD(&spapr->phbs, sphb, list);
633 /* Initialize the LSI table */
634 for (i = 0; i < PCI_NUM_PINS; i++) {
637 irq = spapr_allocate_lsi(0);
639 error_setg(errp, "spapr_allocate_lsi failed");
643 sphb->lsi_table[i].irq = irq;
646 if (!info->finish_realize) {
647 error_setg(errp, "finish_realize not defined");
651 info->finish_realize(sphb, errp);
654 static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp)
658 tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn,
660 SPAPR_TCE_PAGE_SHIFT,
661 0x40000000 >> SPAPR_TCE_PAGE_SHIFT);
663 error_setg(errp, "Unable to create TCE table for %s",
668 /* Register default 32bit DMA window */
669 memory_region_add_subregion(&sphb->iommu_root, 0,
670 spapr_tce_get_iommu(tcet));
673 static int spapr_phb_children_reset(Object *child, void *opaque)
675 DeviceState *dev = (DeviceState *) object_dynamic_cast(child, TYPE_DEVICE);
684 static void spapr_phb_reset(DeviceState *qdev)
686 /* Reset the IOMMU state */
687 object_child_foreach(OBJECT(qdev), spapr_phb_children_reset, NULL);
690 static Property spapr_phb_properties[] = {
691 DEFINE_PROP_INT32("index", sPAPRPHBState, index, -1),
692 DEFINE_PROP_UINT64("buid", sPAPRPHBState, buid, -1),
693 DEFINE_PROP_UINT32("liobn", sPAPRPHBState, dma_liobn, -1),
694 DEFINE_PROP_UINT64("mem_win_addr", sPAPRPHBState, mem_win_addr, -1),
695 DEFINE_PROP_UINT64("mem_win_size", sPAPRPHBState, mem_win_size,
696 SPAPR_PCI_MMIO_WIN_SIZE),
697 DEFINE_PROP_UINT64("io_win_addr", sPAPRPHBState, io_win_addr, -1),
698 DEFINE_PROP_UINT64("io_win_size", sPAPRPHBState, io_win_size,
699 SPAPR_PCI_IO_WIN_SIZE),
700 DEFINE_PROP_END_OF_LIST(),
703 static const VMStateDescription vmstate_spapr_pci_lsi = {
704 .name = "spapr_pci/lsi",
706 .minimum_version_id = 1,
707 .fields = (VMStateField[]) {
708 VMSTATE_UINT32_EQUAL(irq, struct spapr_pci_lsi),
710 VMSTATE_END_OF_LIST()
714 static const VMStateDescription vmstate_spapr_pci_msi = {
715 .name = "spapr_pci/lsi",
717 .minimum_version_id = 1,
718 .fields = (VMStateField[]) {
719 VMSTATE_UINT32(config_addr, struct spapr_pci_msi),
720 VMSTATE_UINT32(irq, struct spapr_pci_msi),
721 VMSTATE_UINT32(nvec, struct spapr_pci_msi),
723 VMSTATE_END_OF_LIST()
727 static const VMStateDescription vmstate_spapr_pci = {
730 .minimum_version_id = 1,
731 .fields = (VMStateField[]) {
732 VMSTATE_UINT64_EQUAL(buid, sPAPRPHBState),
733 VMSTATE_UINT32_EQUAL(dma_liobn, sPAPRPHBState),
734 VMSTATE_UINT64_EQUAL(mem_win_addr, sPAPRPHBState),
735 VMSTATE_UINT64_EQUAL(mem_win_size, sPAPRPHBState),
736 VMSTATE_UINT64_EQUAL(io_win_addr, sPAPRPHBState),
737 VMSTATE_UINT64_EQUAL(io_win_size, sPAPRPHBState),
738 VMSTATE_STRUCT_ARRAY(lsi_table, sPAPRPHBState, PCI_NUM_PINS, 0,
739 vmstate_spapr_pci_lsi, struct spapr_pci_lsi),
740 VMSTATE_STRUCT_ARRAY(msi_table, sPAPRPHBState, SPAPR_MSIX_MAX_DEVS, 0,
741 vmstate_spapr_pci_msi, struct spapr_pci_msi),
743 VMSTATE_END_OF_LIST()
747 static const char *spapr_phb_root_bus_path(PCIHostState *host_bridge,
750 sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(host_bridge);
752 return sphb->dtbusname;
755 static void spapr_phb_class_init(ObjectClass *klass, void *data)
757 PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
758 DeviceClass *dc = DEVICE_CLASS(klass);
759 sPAPRPHBClass *spc = SPAPR_PCI_HOST_BRIDGE_CLASS(klass);
761 hc->root_bus_path = spapr_phb_root_bus_path;
762 dc->realize = spapr_phb_realize;
763 dc->props = spapr_phb_properties;
764 dc->reset = spapr_phb_reset;
765 dc->vmsd = &vmstate_spapr_pci;
766 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
767 dc->cannot_instantiate_with_device_add_yet = false;
768 spc->finish_realize = spapr_phb_finish_realize;
771 static const TypeInfo spapr_phb_info = {
772 .name = TYPE_SPAPR_PCI_HOST_BRIDGE,
773 .parent = TYPE_PCI_HOST_BRIDGE,
774 .instance_size = sizeof(sPAPRPHBState),
775 .class_init = spapr_phb_class_init,
776 .class_size = sizeof(sPAPRPHBClass),
779 PCIHostState *spapr_create_phb(sPAPREnvironment *spapr, int index)
783 dev = qdev_create(NULL, TYPE_SPAPR_PCI_HOST_BRIDGE);
784 qdev_prop_set_uint32(dev, "index", index);
785 qdev_init_nofail(dev);
787 return PCI_HOST_BRIDGE(dev);
790 /* Macros to operate with address in OF binding to PCI */
791 #define b_x(x, p, l) (((x) & ((1<<(l))-1)) << (p))
792 #define b_n(x) b_x((x), 31, 1) /* 0 if relocatable */
793 #define b_p(x) b_x((x), 30, 1) /* 1 if prefetchable */
794 #define b_t(x) b_x((x), 29, 1) /* 1 if the address is aliased */
795 #define b_ss(x) b_x((x), 24, 2) /* the space code */
796 #define b_bbbbbbbb(x) b_x((x), 16, 8) /* bus number */
797 #define b_ddddd(x) b_x((x), 11, 5) /* device number */
798 #define b_fff(x) b_x((x), 8, 3) /* function number */
799 #define b_rrrrrrrr(x) b_x((x), 0, 8) /* register number */
801 typedef struct sPAPRTCEDT {
806 static int spapr_phb_children_dt(Object *child, void *opaque)
808 sPAPRTCEDT *p = opaque;
811 tcet = (sPAPRTCETable *) object_dynamic_cast(child, TYPE_SPAPR_TCE_TABLE);
816 spapr_dma_dt(p->fdt, p->node_off, "ibm,dma-window",
817 tcet->liobn, tcet->bus_offset,
818 tcet->nb_table << tcet->page_shift);
819 /* Stop after the first window */
824 int spapr_populate_pci_dt(sPAPRPHBState *phb,
825 uint32_t xics_phandle,
830 uint32_t bus_range[] = { cpu_to_be32(0), cpu_to_be32(0xff) };
836 } QEMU_PACKED ranges[] = {
838 cpu_to_be32(b_ss(1)), cpu_to_be64(0),
839 cpu_to_be64(phb->io_win_addr),
840 cpu_to_be64(memory_region_size(&phb->iospace)),
843 cpu_to_be32(b_ss(2)), cpu_to_be64(SPAPR_PCI_MEM_WIN_BUS_OFFSET),
844 cpu_to_be64(phb->mem_win_addr),
845 cpu_to_be64(memory_region_size(&phb->memwindow)),
848 uint64_t bus_reg[] = { cpu_to_be64(phb->buid), 0 };
849 uint32_t interrupt_map_mask[] = {
850 cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, cpu_to_be32(-1)};
851 uint32_t interrupt_map[PCI_SLOT_MAX * PCI_NUM_PINS][7];
853 /* Start populating the FDT */
854 sprintf(nodename, "pci@%" PRIx64, phb->buid);
855 bus_off = fdt_add_subnode(fdt, 0, nodename);
868 /* Write PHB properties */
869 _FDT(fdt_setprop_string(fdt, bus_off, "device_type", "pci"));
870 _FDT(fdt_setprop_string(fdt, bus_off, "compatible", "IBM,Logical_PHB"));
871 _FDT(fdt_setprop_cell(fdt, bus_off, "#address-cells", 0x3));
872 _FDT(fdt_setprop_cell(fdt, bus_off, "#size-cells", 0x2));
873 _FDT(fdt_setprop_cell(fdt, bus_off, "#interrupt-cells", 0x1));
874 _FDT(fdt_setprop(fdt, bus_off, "used-by-rtas", NULL, 0));
875 _FDT(fdt_setprop(fdt, bus_off, "bus-range", &bus_range, sizeof(bus_range)));
876 _FDT(fdt_setprop(fdt, bus_off, "ranges", &ranges, sizeof(ranges)));
877 _FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg)));
878 _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1));
879 _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pe-total-#msi", XICS_IRQS));
881 /* Build the interrupt-map, this must matches what is done
882 * in pci_spapr_map_irq
884 _FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask",
885 &interrupt_map_mask, sizeof(interrupt_map_mask)));
886 for (i = 0; i < PCI_SLOT_MAX; i++) {
887 for (j = 0; j < PCI_NUM_PINS; j++) {
888 uint32_t *irqmap = interrupt_map[i*PCI_NUM_PINS + j];
889 int lsi_num = pci_spapr_swizzle(i, j);
891 irqmap[0] = cpu_to_be32(b_ddddd(i)|b_fff(0));
894 irqmap[3] = cpu_to_be32(j+1);
895 irqmap[4] = cpu_to_be32(xics_phandle);
896 irqmap[5] = cpu_to_be32(phb->lsi_table[lsi_num].irq);
897 irqmap[6] = cpu_to_be32(0x8);
900 /* Write interrupt map */
901 _FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
902 sizeof(interrupt_map)));
904 object_child_foreach(OBJECT(phb), spapr_phb_children_dt,
905 &((sPAPRTCEDT){ .fdt = fdt, .node_off = bus_off }));
910 void spapr_pci_rtas_init(void)
912 spapr_rtas_register("read-pci-config", rtas_read_pci_config);
913 spapr_rtas_register("write-pci-config", rtas_write_pci_config);
914 spapr_rtas_register("ibm,read-pci-config", rtas_ibm_read_pci_config);
915 spapr_rtas_register("ibm,write-pci-config", rtas_ibm_write_pci_config);
917 spapr_rtas_register("ibm,query-interrupt-source-number",
918 rtas_ibm_query_interrupt_source_number);
919 spapr_rtas_register("ibm,change-msi", rtas_ibm_change_msi);
923 static void spapr_pci_register_types(void)
925 type_register_static(&spapr_phb_info);
928 type_init(spapr_pci_register_types)