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"
36 #include "hw/pci/pci_bus.h"
38 /* Copied from the kernel arch/powerpc/platforms/pseries/msi.c */
39 #define RTAS_QUERY_FN 0
40 #define RTAS_CHANGE_FN 1
41 #define RTAS_RESET_FN 2
42 #define RTAS_CHANGE_MSI_FN 3
43 #define RTAS_CHANGE_MSIX_FN 4
45 /* Interrupt types to return on RTAS_CHANGE_* */
46 #define RTAS_TYPE_MSI 1
47 #define RTAS_TYPE_MSIX 2
49 static sPAPRPHBState *find_phb(sPAPREnvironment *spapr, uint64_t buid)
53 QLIST_FOREACH(sphb, &spapr->phbs, list) {
54 if (sphb->buid != buid) {
63 static PCIDevice *find_dev(sPAPREnvironment *spapr, uint64_t buid,
66 sPAPRPHBState *sphb = find_phb(spapr, buid);
67 PCIHostState *phb = PCI_HOST_BRIDGE(sphb);
68 BusState *bus = BUS(phb->bus);
70 int devfn = (config_addr >> 8) & 0xFF;
76 QTAILQ_FOREACH(kid, &bus->children, sibling) {
77 PCIDevice *dev = (PCIDevice *)kid->child;
78 if (dev->devfn == devfn) {
86 static uint32_t rtas_pci_cfgaddr(uint32_t arg)
88 /* This handles the encoding of extended config space addresses */
89 return ((arg >> 20) & 0xf00) | (arg & 0xff);
92 static void finish_read_pci_config(sPAPREnvironment *spapr, uint64_t buid,
93 uint32_t addr, uint32_t size,
99 if ((size != 1) && (size != 2) && (size != 4)) {
100 /* access must be 1, 2 or 4 bytes */
101 rtas_st(rets, 0, -1);
105 pci_dev = find_dev(spapr, buid, addr);
106 addr = rtas_pci_cfgaddr(addr);
108 if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
109 /* Access must be to a valid device, within bounds and
110 * naturally aligned */
111 rtas_st(rets, 0, -1);
115 val = pci_host_config_read_common(pci_dev, addr,
116 pci_config_size(pci_dev), size);
119 rtas_st(rets, 1, val);
122 static void rtas_ibm_read_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
123 uint32_t token, uint32_t nargs,
125 uint32_t nret, target_ulong rets)
130 if ((nargs != 4) || (nret != 2)) {
131 rtas_st(rets, 0, -1);
135 buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
136 size = rtas_ld(args, 3);
137 addr = rtas_ld(args, 0);
139 finish_read_pci_config(spapr, buid, addr, size, rets);
142 static void rtas_read_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
143 uint32_t token, uint32_t nargs,
145 uint32_t nret, target_ulong rets)
149 if ((nargs != 2) || (nret != 2)) {
150 rtas_st(rets, 0, -1);
154 size = rtas_ld(args, 1);
155 addr = rtas_ld(args, 0);
157 finish_read_pci_config(spapr, 0, addr, size, rets);
160 static void finish_write_pci_config(sPAPREnvironment *spapr, uint64_t buid,
161 uint32_t addr, uint32_t size,
162 uint32_t val, target_ulong rets)
166 if ((size != 1) && (size != 2) && (size != 4)) {
167 /* access must be 1, 2 or 4 bytes */
168 rtas_st(rets, 0, -1);
172 pci_dev = find_dev(spapr, buid, addr);
173 addr = rtas_pci_cfgaddr(addr);
175 if (!pci_dev || (addr % size) || (addr >= pci_config_size(pci_dev))) {
176 /* Access must be to a valid device, within bounds and
177 * naturally aligned */
178 rtas_st(rets, 0, -1);
182 pci_host_config_write_common(pci_dev, addr, pci_config_size(pci_dev),
188 static void rtas_ibm_write_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
189 uint32_t token, uint32_t nargs,
191 uint32_t nret, target_ulong rets)
194 uint32_t val, size, addr;
196 if ((nargs != 5) || (nret != 1)) {
197 rtas_st(rets, 0, -1);
201 buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
202 val = rtas_ld(args, 4);
203 size = rtas_ld(args, 3);
204 addr = rtas_ld(args, 0);
206 finish_write_pci_config(spapr, buid, addr, size, val, rets);
209 static void rtas_write_pci_config(PowerPCCPU *cpu, sPAPREnvironment *spapr,
210 uint32_t token, uint32_t nargs,
212 uint32_t nret, target_ulong rets)
214 uint32_t val, size, addr;
216 if ((nargs != 3) || (nret != 1)) {
217 rtas_st(rets, 0, -1);
222 val = rtas_ld(args, 2);
223 size = rtas_ld(args, 1);
224 addr = rtas_ld(args, 0);
226 finish_write_pci_config(spapr, 0, addr, size, val, rets);
230 * Find an entry with config_addr or returns the empty one if not found AND
232 * At the moment the msi_table entries are never released so there is
233 * no point to look till the end of the list if we need to find the free entry.
235 static int spapr_msicfg_find(sPAPRPHBState *phb, uint32_t config_addr,
240 for (i = 0; i < SPAPR_MSIX_MAX_DEVS; ++i) {
241 if (!phb->msi_table[i].nvec) {
244 if (phb->msi_table[i].config_addr == config_addr) {
248 if ((i < SPAPR_MSIX_MAX_DEVS) && alloc_new) {
249 trace_spapr_pci_msi("Allocating new MSI config", i, config_addr);
257 * Set MSI/MSIX message data.
258 * This is required for msi_notify()/msix_notify() which
259 * will write at the addresses via spapr_msi_write().
261 static void spapr_msi_setmsg(PCIDevice *pdev, hwaddr addr,
262 bool msix, unsigned req_num)
265 MSIMessage msg = { .address = addr, .data = 0 };
268 msi_set_message(pdev, msg);
269 trace_spapr_pci_msi_setup(pdev->name, 0, msg.address);
273 for (i = 0; i < req_num; ++i) {
274 msg.address = addr | (i << 2);
275 msix_set_message(pdev, i, msg);
276 trace_spapr_pci_msi_setup(pdev->name, i, msg.address);
280 static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPREnvironment *spapr,
281 uint32_t token, uint32_t nargs,
282 target_ulong args, uint32_t nret,
285 uint32_t config_addr = rtas_ld(args, 0);
286 uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
287 unsigned int func = rtas_ld(args, 3);
288 unsigned int req_num = rtas_ld(args, 4); /* 0 == remove all */
289 unsigned int seq_num = rtas_ld(args, 5);
290 unsigned int ret_intr_type;
292 sPAPRPHBState *phb = NULL;
293 PCIDevice *pdev = NULL;
296 case RTAS_CHANGE_MSI_FN:
298 ret_intr_type = RTAS_TYPE_MSI;
300 case RTAS_CHANGE_MSIX_FN:
301 ret_intr_type = RTAS_TYPE_MSIX;
304 fprintf(stderr, "rtas_ibm_change_msi(%u) is not implemented\n", func);
305 rtas_st(rets, 0, -3); /* Parameter error */
309 /* Fins sPAPRPHBState */
310 phb = find_phb(spapr, buid);
312 pdev = find_dev(spapr, buid, config_addr);
315 rtas_st(rets, 0, -3); /* Parameter error */
321 ndev = spapr_msicfg_find(phb, config_addr, false);
323 trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
324 rtas_st(rets, 0, -1); /* Hardware error */
327 trace_spapr_pci_msi("Released MSIs", ndev, config_addr);
335 /* Find a device number in the map to add or reuse the existing one */
336 ndev = spapr_msicfg_find(phb, config_addr, true);
337 if (ndev >= SPAPR_MSIX_MAX_DEVS || ndev < 0) {
338 fprintf(stderr, "No free entry for a new MSI device\n");
339 rtas_st(rets, 0, -1); /* Hardware error */
342 trace_spapr_pci_msi("Configuring MSI", ndev, config_addr);
344 /* Check if there is an old config and MSI number has not changed */
345 if (phb->msi_table[ndev].nvec && (req_num != phb->msi_table[ndev].nvec)) {
346 /* Unexpected behaviour */
347 fprintf(stderr, "Cannot reuse MSI config for device#%d", ndev);
348 rtas_st(rets, 0, -1); /* Hardware error */
352 /* There is no cached config, allocate MSIs */
353 if (!phb->msi_table[ndev].nvec) {
354 irq = spapr_allocate_irq_block(req_num, false);
356 fprintf(stderr, "Cannot allocate MSIs for device#%d", ndev);
357 rtas_st(rets, 0, -1); /* Hardware error */
360 phb->msi_table[ndev].irq = irq;
361 phb->msi_table[ndev].nvec = req_num;
362 phb->msi_table[ndev].config_addr = config_addr;
365 /* Setup MSI/MSIX vectors in the device (via cfgspace or MSIX BAR) */
366 spapr_msi_setmsg(pdev, phb->msi_win_addr | (ndev << 16),
367 ret_intr_type == RTAS_TYPE_MSIX, req_num);
370 rtas_st(rets, 1, req_num);
371 rtas_st(rets, 2, ++seq_num);
372 rtas_st(rets, 3, ret_intr_type);
374 trace_spapr_pci_rtas_ibm_change_msi(func, req_num);
377 static void rtas_ibm_query_interrupt_source_number(PowerPCCPU *cpu,
378 sPAPREnvironment *spapr,
385 uint32_t config_addr = rtas_ld(args, 0);
386 uint64_t buid = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 2);
387 unsigned int intr_src_num = -1, ioa_intr_num = rtas_ld(args, 3);
389 sPAPRPHBState *phb = NULL;
391 /* Fins sPAPRPHBState */
392 phb = find_phb(spapr, buid);
394 rtas_st(rets, 0, -3); /* Parameter error */
398 /* Find device descriptor and start IRQ */
399 ndev = spapr_msicfg_find(phb, config_addr, false);
401 trace_spapr_pci_msi("MSI has not been enabled", -1, config_addr);
402 rtas_st(rets, 0, -1); /* Hardware error */
406 intr_src_num = phb->msi_table[ndev].irq + ioa_intr_num;
407 trace_spapr_pci_rtas_ibm_query_interrupt_source_number(ioa_intr_num,
411 rtas_st(rets, 1, intr_src_num);
412 rtas_st(rets, 2, 1);/* 0 == level; 1 == edge */
415 static int pci_spapr_swizzle(int slot, int pin)
417 return (slot + pin) % PCI_NUM_PINS;
420 static int pci_spapr_map_irq(PCIDevice *pci_dev, int irq_num)
423 * Here we need to convert pci_dev + irq_num to some unique value
424 * which is less than number of IRQs on the specific bus (4). We
425 * use standard PCI swizzling, that is (slot number + pin number)
428 return pci_spapr_swizzle(PCI_SLOT(pci_dev->devfn), irq_num);
431 static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
434 * Here we use the number returned by pci_spapr_map_irq to find a
435 * corresponding qemu_irq.
437 sPAPRPHBState *phb = opaque;
439 trace_spapr_pci_lsi_set(phb->dtbusname, irq_num, phb->lsi_table[irq_num].irq);
440 qemu_set_irq(spapr_phb_lsi_qirq(phb, irq_num), level);
443 static uint64_t spapr_io_read(void *opaque, hwaddr addr,
448 return cpu_inb(addr);
450 return cpu_inw(addr);
452 return cpu_inl(addr);
457 static void spapr_io_write(void *opaque, hwaddr addr,
458 uint64_t data, unsigned size)
462 cpu_outb(addr, data);
465 cpu_outw(addr, data);
468 cpu_outl(addr, data);
474 static const MemoryRegionOps spapr_io_ops = {
475 .endianness = DEVICE_LITTLE_ENDIAN,
476 .read = spapr_io_read,
477 .write = spapr_io_write
481 * MSI/MSIX memory region implementation.
482 * The handler handles both MSI and MSIX.
483 * For MSI-X, the vector number is encoded as a part of the address,
485 * For MSI, the vector number is encoded in least bits in data.
487 static void spapr_msi_write(void *opaque, hwaddr addr,
488 uint64_t data, unsigned size)
490 sPAPRPHBState *phb = opaque;
491 int ndev = addr >> 16;
492 int vec = ((addr & 0xFFFF) >> 2) | data;
493 uint32_t irq = phb->msi_table[ndev].irq + vec;
495 trace_spapr_pci_msi_write(addr, data, irq);
497 qemu_irq_pulse(xics_get_qirq(spapr->icp, irq));
500 static const MemoryRegionOps spapr_msi_ops = {
501 /* There is no .read as the read result is undefined by PCI spec */
503 .write = spapr_msi_write,
504 .endianness = DEVICE_LITTLE_ENDIAN
510 static AddressSpace *spapr_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
512 sPAPRPHBState *phb = opaque;
514 return &phb->iommu_as;
517 static int spapr_phb_init(SysBusDevice *s)
519 sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
520 PCIHostState *phb = PCI_HOST_BRIDGE(s);
526 if (sphb->index != -1) {
529 if ((sphb->buid != -1) || (sphb->dma_liobn != -1)
530 || (sphb->mem_win_addr != -1)
531 || (sphb->io_win_addr != -1)
532 || (sphb->msi_win_addr != -1)) {
533 fprintf(stderr, "Either \"index\" or other parameters must"
534 " be specified for PAPR PHB, not both\n");
538 sphb->buid = SPAPR_PCI_BASE_BUID + sphb->index;
539 sphb->dma_liobn = SPAPR_PCI_BASE_LIOBN + sphb->index;
541 windows_base = SPAPR_PCI_WINDOW_BASE
542 + sphb->index * SPAPR_PCI_WINDOW_SPACING;
543 sphb->mem_win_addr = windows_base + SPAPR_PCI_MMIO_WIN_OFF;
544 sphb->io_win_addr = windows_base + SPAPR_PCI_IO_WIN_OFF;
545 sphb->msi_win_addr = windows_base + SPAPR_PCI_MSI_WIN_OFF;
548 if (sphb->buid == -1) {
549 fprintf(stderr, "BUID not specified for PHB\n");
553 if (sphb->dma_liobn == -1) {
554 fprintf(stderr, "LIOBN not specified for PHB\n");
558 if (sphb->mem_win_addr == -1) {
559 fprintf(stderr, "Memory window address not specified for PHB\n");
563 if (sphb->io_win_addr == -1) {
564 fprintf(stderr, "IO window address not specified for PHB\n");
568 if (sphb->msi_win_addr == -1) {
569 fprintf(stderr, "MSI window address not specified for PHB\n");
573 if (find_phb(spapr, sphb->buid)) {
574 fprintf(stderr, "PCI host bridges must have unique BUIDs\n");
578 sphb->dtbusname = g_strdup_printf("pci@%" PRIx64, sphb->buid);
580 namebuf = alloca(strlen(sphb->dtbusname) + 32);
582 /* Initialize memory regions */
583 sprintf(namebuf, "%s.mmio", sphb->dtbusname);
584 memory_region_init(&sphb->memspace, namebuf, INT64_MAX);
586 sprintf(namebuf, "%s.mmio-alias", sphb->dtbusname);
587 memory_region_init_alias(&sphb->memwindow, namebuf, &sphb->memspace,
588 SPAPR_PCI_MEM_WIN_BUS_OFFSET, sphb->mem_win_size);
589 memory_region_add_subregion(get_system_memory(), sphb->mem_win_addr,
592 /* On ppc, we only have MMIO no specific IO space from the CPU
593 * perspective. In theory we ought to be able to embed the PCI IO
594 * memory region direction in the system memory space. However,
595 * if any of the IO BAR subregions use the old_portio mechanism,
596 * that won't be processed properly unless accessed from the
597 * system io address space. This hack to bounce things via
598 * system_io works around the problem until all the users of
599 * old_portion are updated */
600 sprintf(namebuf, "%s.io", sphb->dtbusname);
601 memory_region_init(&sphb->iospace, namebuf, SPAPR_PCI_IO_WIN_SIZE);
602 /* FIXME: fix to support multiple PHBs */
603 memory_region_add_subregion(get_system_io(), 0, &sphb->iospace);
605 sprintf(namebuf, "%s.io-alias", sphb->dtbusname);
606 memory_region_init_io(&sphb->iowindow, &spapr_io_ops, sphb,
607 namebuf, SPAPR_PCI_IO_WIN_SIZE);
608 memory_region_add_subregion(get_system_memory(), sphb->io_win_addr,
611 /* As MSI/MSIX interrupts trigger by writing at MSI/MSIX vectors,
612 * we need to allocate some memory to catch those writes coming
613 * from msi_notify()/msix_notify() */
615 sprintf(namebuf, "%s.msi", sphb->dtbusname);
616 memory_region_init_io(&sphb->msiwindow, &spapr_msi_ops, sphb,
617 namebuf, SPAPR_MSIX_MAX_DEVS * 0x10000);
618 memory_region_add_subregion(get_system_memory(), sphb->msi_win_addr,
623 * Selecting a busname is more complex than you'd think, due to
624 * interacting constraints. If the user has specified an id
625 * explicitly for the phb , then we want to use the qdev default
626 * of naming the bus based on the bridge device (so the user can
627 * then assign devices to it in the way they expect). For the
628 * first / default PCI bus (index=0) we want to use just "pci"
629 * because libvirt expects there to be a bus called, simply,
630 * "pci". Otherwise, we use the same name as in the device tree,
631 * since it's unique by construction, and makes the guest visible
636 } else if (sphb->index == 0) {
639 busname = sphb->dtbusname;
641 bus = pci_register_bus(DEVICE(s), busname,
642 pci_spapr_set_irq, pci_spapr_map_irq, sphb,
643 &sphb->memspace, &sphb->iospace,
644 PCI_DEVFN(0, 0), PCI_NUM_PINS, TYPE_PCI_BUS);
647 sphb->dma_window_start = 0;
648 sphb->dma_window_size = 0x40000000;
649 sphb->tcet = spapr_tce_new_table(sphb->dma_liobn, sphb->dma_window_size);
651 fprintf(stderr, "Unable to create TCE table for %s\n", sphb->dtbusname);
654 address_space_init(&sphb->iommu_as, spapr_tce_get_iommu(sphb->tcet),
657 pci_setup_iommu(bus, spapr_pci_dma_iommu, sphb);
659 QLIST_INSERT_HEAD(&spapr->phbs, sphb, list);
661 /* Initialize the LSI table */
662 for (i = 0; i < PCI_NUM_PINS; i++) {
665 irq = spapr_allocate_lsi(0);
670 sphb->lsi_table[i].irq = irq;
676 static void spapr_phb_reset(DeviceState *qdev)
678 SysBusDevice *s = SYS_BUS_DEVICE(qdev);
679 sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(s);
681 /* Reset the IOMMU state */
682 spapr_tce_reset(sphb->tcet);
685 static Property spapr_phb_properties[] = {
686 DEFINE_PROP_INT32("index", sPAPRPHBState, index, -1),
687 DEFINE_PROP_HEX64("buid", sPAPRPHBState, buid, -1),
688 DEFINE_PROP_HEX32("liobn", sPAPRPHBState, dma_liobn, -1),
689 DEFINE_PROP_HEX64("mem_win_addr", sPAPRPHBState, mem_win_addr, -1),
690 DEFINE_PROP_HEX64("mem_win_size", sPAPRPHBState, mem_win_size,
691 SPAPR_PCI_MMIO_WIN_SIZE),
692 DEFINE_PROP_HEX64("io_win_addr", sPAPRPHBState, io_win_addr, -1),
693 DEFINE_PROP_HEX64("io_win_size", sPAPRPHBState, io_win_size,
694 SPAPR_PCI_IO_WIN_SIZE),
695 DEFINE_PROP_HEX64("msi_win_addr", sPAPRPHBState, msi_win_addr, -1),
696 DEFINE_PROP_END_OF_LIST(),
699 static void spapr_phb_class_init(ObjectClass *klass, void *data)
701 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
702 DeviceClass *dc = DEVICE_CLASS(klass);
704 sdc->init = spapr_phb_init;
705 dc->props = spapr_phb_properties;
706 dc->reset = spapr_phb_reset;
709 static const TypeInfo spapr_phb_info = {
710 .name = TYPE_SPAPR_PCI_HOST_BRIDGE,
711 .parent = TYPE_PCI_HOST_BRIDGE,
712 .instance_size = sizeof(sPAPRPHBState),
713 .class_init = spapr_phb_class_init,
716 PCIHostState *spapr_create_phb(sPAPREnvironment *spapr, int index)
720 dev = qdev_create(NULL, TYPE_SPAPR_PCI_HOST_BRIDGE);
721 qdev_prop_set_uint32(dev, "index", index);
722 qdev_init_nofail(dev);
724 return PCI_HOST_BRIDGE(dev);
727 /* Macros to operate with address in OF binding to PCI */
728 #define b_x(x, p, l) (((x) & ((1<<(l))-1)) << (p))
729 #define b_n(x) b_x((x), 31, 1) /* 0 if relocatable */
730 #define b_p(x) b_x((x), 30, 1) /* 1 if prefetchable */
731 #define b_t(x) b_x((x), 29, 1) /* 1 if the address is aliased */
732 #define b_ss(x) b_x((x), 24, 2) /* the space code */
733 #define b_bbbbbbbb(x) b_x((x), 16, 8) /* bus number */
734 #define b_ddddd(x) b_x((x), 11, 5) /* device number */
735 #define b_fff(x) b_x((x), 8, 3) /* function number */
736 #define b_rrrrrrrr(x) b_x((x), 0, 8) /* register number */
738 int spapr_populate_pci_dt(sPAPRPHBState *phb,
739 uint32_t xics_phandle,
744 uint32_t bus_range[] = { cpu_to_be32(0), cpu_to_be32(0xff) };
750 } QEMU_PACKED ranges[] = {
752 cpu_to_be32(b_ss(1)), cpu_to_be64(0),
753 cpu_to_be64(phb->io_win_addr),
754 cpu_to_be64(memory_region_size(&phb->iospace)),
757 cpu_to_be32(b_ss(2)), cpu_to_be64(SPAPR_PCI_MEM_WIN_BUS_OFFSET),
758 cpu_to_be64(phb->mem_win_addr),
759 cpu_to_be64(memory_region_size(&phb->memwindow)),
762 uint64_t bus_reg[] = { cpu_to_be64(phb->buid), 0 };
763 uint32_t interrupt_map_mask[] = {
764 cpu_to_be32(b_ddddd(-1)|b_fff(0)), 0x0, 0x0, cpu_to_be32(-1)};
765 uint32_t interrupt_map[PCI_SLOT_MAX * PCI_NUM_PINS][7];
767 /* Start populating the FDT */
768 sprintf(nodename, "pci@%" PRIx64, phb->buid);
769 bus_off = fdt_add_subnode(fdt, 0, nodename);
782 /* Write PHB properties */
783 _FDT(fdt_setprop_string(fdt, bus_off, "device_type", "pci"));
784 _FDT(fdt_setprop_string(fdt, bus_off, "compatible", "IBM,Logical_PHB"));
785 _FDT(fdt_setprop_cell(fdt, bus_off, "#address-cells", 0x3));
786 _FDT(fdt_setprop_cell(fdt, bus_off, "#size-cells", 0x2));
787 _FDT(fdt_setprop_cell(fdt, bus_off, "#interrupt-cells", 0x1));
788 _FDT(fdt_setprop(fdt, bus_off, "used-by-rtas", NULL, 0));
789 _FDT(fdt_setprop(fdt, bus_off, "bus-range", &bus_range, sizeof(bus_range)));
790 _FDT(fdt_setprop(fdt, bus_off, "ranges", &ranges, sizeof(ranges)));
791 _FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg)));
792 _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1));
794 /* Build the interrupt-map, this must matches what is done
795 * in pci_spapr_map_irq
797 _FDT(fdt_setprop(fdt, bus_off, "interrupt-map-mask",
798 &interrupt_map_mask, sizeof(interrupt_map_mask)));
799 for (i = 0; i < PCI_SLOT_MAX; i++) {
800 for (j = 0; j < PCI_NUM_PINS; j++) {
801 uint32_t *irqmap = interrupt_map[i*PCI_NUM_PINS + j];
802 int lsi_num = pci_spapr_swizzle(i, j);
804 irqmap[0] = cpu_to_be32(b_ddddd(i)|b_fff(0));
807 irqmap[3] = cpu_to_be32(j+1);
808 irqmap[4] = cpu_to_be32(xics_phandle);
809 irqmap[5] = cpu_to_be32(phb->lsi_table[lsi_num].irq);
810 irqmap[6] = cpu_to_be32(0x8);
813 /* Write interrupt map */
814 _FDT(fdt_setprop(fdt, bus_off, "interrupt-map", &interrupt_map,
815 sizeof(interrupt_map)));
817 spapr_dma_dt(fdt, bus_off, "ibm,dma-window",
818 phb->dma_liobn, phb->dma_window_start,
819 phb->dma_window_size);
824 void spapr_pci_rtas_init(void)
826 spapr_rtas_register("read-pci-config", rtas_read_pci_config);
827 spapr_rtas_register("write-pci-config", rtas_write_pci_config);
828 spapr_rtas_register("ibm,read-pci-config", rtas_ibm_read_pci_config);
829 spapr_rtas_register("ibm,write-pci-config", rtas_ibm_write_pci_config);
831 spapr_rtas_register("ibm,query-interrupt-source-number",
832 rtas_ibm_query_interrupt_source_number);
833 spapr_rtas_register("ibm,change-msi", rtas_ibm_change_msi);
837 static void spapr_pci_register_types(void)
839 type_register_static(&spapr_phb_info);
842 type_init(spapr_pci_register_types)