diff options
author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-10-11 06:38:18 +0200 |
---|---|---|
committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-02-22 12:47:40 +0100 |
commit | 22dc8a47f9c68f98594449be713d4dde9389f960 (patch) | |
tree | 0b43a5bfd3c16382131b7c74e30ea64b319e152f /hw/pci-host | |
parent | 55abb29e6366f99ead5a2636d1f1a2fa85e2f844 (diff) |
hw/ppc/ppc440_pcix: Move ppc440_pcix.c to hw/pci-host/
ppc440_pcix.c is moved from the target specific ppc_ss[] meson
source set to pci_ss[] which is common to all targets: the
object is built once.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240215105017.57748-5-philmd@linaro.org>
Diffstat (limited to 'hw/pci-host')
-rw-r--r-- | hw/pci-host/Kconfig | 4 | ||||
-rw-r--r-- | hw/pci-host/meson.build | 1 | ||||
-rw-r--r-- | hw/pci-host/ppc440_pcix.c | 545 | ||||
-rw-r--r-- | hw/pci-host/trace-events | 8 |
4 files changed, 558 insertions, 0 deletions
diff --git a/hw/pci-host/Kconfig b/hw/pci-host/Kconfig index 0a221e719e..c91880b237 100644 --- a/hw/pci-host/Kconfig +++ b/hw/pci-host/Kconfig @@ -10,6 +10,10 @@ config PPC4XX_PCI bool select PCI +config PPC440_PCIX + bool + select PCI + config RAVEN_PCI bool select PCI diff --git a/hw/pci-host/meson.build b/hw/pci-host/meson.build index eb6dc71c88..3001e93a43 100644 --- a/hw/pci-host/meson.build +++ b/hw/pci-host/meson.build @@ -15,6 +15,7 @@ pci_ss.add(when: 'CONFIG_SH_PCI', if_true: files('sh_pci.c')) # PPC devices pci_ss.add(when: 'CONFIG_PPC4XX_PCI', if_true: files('ppc4xx_pci.c')) +pci_ss.add(when: 'CONFIG_PPC440_PCIX', if_true: files('ppc440_pcix.c')) pci_ss.add(when: 'CONFIG_RAVEN_PCI', if_true: files('raven.c')) pci_ss.add(when: 'CONFIG_GRACKLE_PCI', if_true: files('grackle.c')) # NewWorld PowerMac diff --git a/hw/pci-host/ppc440_pcix.c b/hw/pci-host/ppc440_pcix.c new file mode 100644 index 0000000000..1926ae2a27 --- /dev/null +++ b/hw/pci-host/ppc440_pcix.c @@ -0,0 +1,545 @@ +/* + * Emulation of the ibm,plb-pcix PCI controller + * This is found in some 440 SoCs e.g. the 460EX. + * + * Copyright (c) 2016-2018 BALATON Zoltan + * + * Derived from ppc4xx_pci.c and pci-host/ppce500.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/units.h" +#include "hw/irq.h" +#include "hw/pci-host/ppc4xx.h" +#include "hw/pci/pci_device.h" +#include "hw/pci/pci_host.h" +#include "trace.h" +#include "qom/object.h" + +struct PLBOutMap { + uint64_t la; + uint64_t pcia; + uint32_t sa; + MemoryRegion mr; +}; + +struct PLBInMap { + uint64_t sa; + uint64_t la; + MemoryRegion mr; +}; + +OBJECT_DECLARE_SIMPLE_TYPE(PPC440PCIXState, PPC440_PCIX_HOST) + +#define PPC440_PCIX_NR_POMS 3 +#define PPC440_PCIX_NR_PIMS 3 + +struct PPC440PCIXState { + PCIHostState parent_obj; + + PCIDevice *dev; + struct PLBOutMap pom[PPC440_PCIX_NR_POMS]; + struct PLBInMap pim[PPC440_PCIX_NR_PIMS]; + uint32_t sts; + qemu_irq irq; + AddressSpace bm_as; + MemoryRegion bm; + + MemoryRegion container; + MemoryRegion iomem; + MemoryRegion busmem; + MemoryRegion regs; +}; + +#define PPC440_REG_BASE 0x80000 +#define PPC440_REG_SIZE 0xff + +#define PCIC0_CFGADDR 0x0 +#define PCIC0_CFGDATA 0x4 + +#define PCIX0_POM0LAL 0x68 +#define PCIX0_POM0LAH 0x6c +#define PCIX0_POM0SA 0x70 +#define PCIX0_POM0PCIAL 0x74 +#define PCIX0_POM0PCIAH 0x78 +#define PCIX0_POM1LAL 0x7c +#define PCIX0_POM1LAH 0x80 +#define PCIX0_POM1SA 0x84 +#define PCIX0_POM1PCIAL 0x88 +#define PCIX0_POM1PCIAH 0x8c +#define PCIX0_POM2SA 0x90 + +#define PCIX0_PIM0SAL 0x98 +#define PCIX0_PIM0LAL 0x9c +#define PCIX0_PIM0LAH 0xa0 +#define PCIX0_PIM1SA 0xa4 +#define PCIX0_PIM1LAL 0xa8 +#define PCIX0_PIM1LAH 0xac +#define PCIX0_PIM2SAL 0xb0 +#define PCIX0_PIM2LAL 0xb4 +#define PCIX0_PIM2LAH 0xb8 +#define PCIX0_PIM0SAH 0xf8 +#define PCIX0_PIM2SAH 0xfc + +#define PCIX0_STS 0xe0 + +#define PCI_ALL_SIZE (PPC440_REG_BASE + PPC440_REG_SIZE) + +static void ppc440_pcix_clear_region(MemoryRegion *parent, + MemoryRegion *mem) +{ + if (memory_region_is_mapped(mem)) { + memory_region_del_subregion(parent, mem); + object_unparent(OBJECT(mem)); + } +} + +/* DMA mapping */ +static void ppc440_pcix_update_pim(PPC440PCIXState *s, int idx) +{ + MemoryRegion *mem = &s->pim[idx].mr; + char *name; + uint64_t size; + + /* Before we modify anything, unmap and destroy the region */ + ppc440_pcix_clear_region(&s->bm, mem); + + if (!(s->pim[idx].sa & 1)) { + /* Not enabled, nothing to do */ + return; + } + + name = g_strdup_printf("PCI Inbound Window %d", idx); + size = ~(s->pim[idx].sa & ~7ULL) + 1; + memory_region_init_alias(mem, OBJECT(s), name, get_system_memory(), + s->pim[idx].la, size); + memory_region_add_subregion_overlap(&s->bm, 0, mem, -1); + g_free(name); + + trace_ppc440_pcix_update_pim(idx, size, s->pim[idx].la); +} + +/* BAR mapping */ +static void ppc440_pcix_update_pom(PPC440PCIXState *s, int idx) +{ + MemoryRegion *mem = &s->pom[idx].mr; + MemoryRegion *address_space_mem = get_system_memory(); + char *name; + uint32_t size; + + /* Before we modify anything, unmap and destroy the region */ + ppc440_pcix_clear_region(address_space_mem, mem); + + if (!(s->pom[idx].sa & 1)) { + /* Not enabled, nothing to do */ + return; + } + + name = g_strdup_printf("PCI Outbound Window %d", idx); + size = ~(s->pom[idx].sa & 0xfffffffe) + 1; + if (!size) { + size = 0xffffffff; + } + memory_region_init_alias(mem, OBJECT(s), name, &s->busmem, + s->pom[idx].pcia, size); + memory_region_add_subregion(address_space_mem, s->pom[idx].la, mem); + g_free(name); + + trace_ppc440_pcix_update_pom(idx, size, s->pom[idx].la, s->pom[idx].pcia); +} + +static void ppc440_pcix_reg_write4(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + struct PPC440PCIXState *s = opaque; + + trace_ppc440_pcix_reg_write(addr, val, size); + switch (addr) { + case PCI_VENDOR_ID ... PCI_MAX_LAT: + stl_le_p(s->dev->config + addr, val); + break; + + case PCIX0_POM0LAL: + s->pom[0].la &= 0xffffffff00000000ULL; + s->pom[0].la |= val; + ppc440_pcix_update_pom(s, 0); + break; + case PCIX0_POM0LAH: + s->pom[0].la &= 0xffffffffULL; + s->pom[0].la |= val << 32; + ppc440_pcix_update_pom(s, 0); + break; + case PCIX0_POM0SA: + s->pom[0].sa = val; + ppc440_pcix_update_pom(s, 0); + break; + case PCIX0_POM0PCIAL: + s->pom[0].pcia &= 0xffffffff00000000ULL; + s->pom[0].pcia |= val; + ppc440_pcix_update_pom(s, 0); + break; + case PCIX0_POM0PCIAH: + s->pom[0].pcia &= 0xffffffffULL; + s->pom[0].pcia |= val << 32; + ppc440_pcix_update_pom(s, 0); + break; + case PCIX0_POM1LAL: + s->pom[1].la &= 0xffffffff00000000ULL; + s->pom[1].la |= val; + ppc440_pcix_update_pom(s, 1); + break; + case PCIX0_POM1LAH: + s->pom[1].la &= 0xffffffffULL; + s->pom[1].la |= val << 32; + ppc440_pcix_update_pom(s, 1); + break; + case PCIX0_POM1SA: + s->pom[1].sa = val; + ppc440_pcix_update_pom(s, 1); + break; + case PCIX0_POM1PCIAL: + s->pom[1].pcia &= 0xffffffff00000000ULL; + s->pom[1].pcia |= val; + ppc440_pcix_update_pom(s, 1); + break; + case PCIX0_POM1PCIAH: + s->pom[1].pcia &= 0xffffffffULL; + s->pom[1].pcia |= val << 32; + ppc440_pcix_update_pom(s, 1); + break; + case PCIX0_POM2SA: + s->pom[2].sa = val; + break; + + case PCIX0_PIM0SAL: + s->pim[0].sa &= 0xffffffff00000000ULL; + s->pim[0].sa |= val; + ppc440_pcix_update_pim(s, 0); + break; + case PCIX0_PIM0LAL: + s->pim[0].la &= 0xffffffff00000000ULL; + s->pim[0].la |= val; + ppc440_pcix_update_pim(s, 0); + break; + case PCIX0_PIM0LAH: + s->pim[0].la &= 0xffffffffULL; + s->pim[0].la |= val << 32; + ppc440_pcix_update_pim(s, 0); + break; + case PCIX0_PIM1SA: + s->pim[1].sa = val; + ppc440_pcix_update_pim(s, 1); + break; + case PCIX0_PIM1LAL: + s->pim[1].la &= 0xffffffff00000000ULL; + s->pim[1].la |= val; + ppc440_pcix_update_pim(s, 1); + break; + case PCIX0_PIM1LAH: + s->pim[1].la &= 0xffffffffULL; + s->pim[1].la |= val << 32; + ppc440_pcix_update_pim(s, 1); + break; + case PCIX0_PIM2SAL: + s->pim[2].sa &= 0xffffffff00000000ULL; + s->pim[2].sa |= val; + ppc440_pcix_update_pim(s, 2); + break; + case PCIX0_PIM2LAL: + s->pim[2].la &= 0xffffffff00000000ULL; + s->pim[2].la |= val; + ppc440_pcix_update_pim(s, 2); + break; + case PCIX0_PIM2LAH: + s->pim[2].la &= 0xffffffffULL; + s->pim[2].la |= val << 32; + ppc440_pcix_update_pim(s, 2); + break; + + case PCIX0_STS: + s->sts = val; + break; + + case PCIX0_PIM0SAH: + s->pim[0].sa &= 0xffffffffULL; + s->pim[0].sa |= val << 32; + ppc440_pcix_update_pim(s, 0); + break; + case PCIX0_PIM2SAH: + s->pim[2].sa &= 0xffffffffULL; + s->pim[2].sa |= val << 32; + ppc440_pcix_update_pim(s, 2); + break; + + default: + qemu_log_mask(LOG_UNIMP, + "%s: unhandled PCI internal register 0x%"HWADDR_PRIx"\n", + __func__, addr); + break; + } +} + +static uint64_t ppc440_pcix_reg_read4(void *opaque, hwaddr addr, + unsigned size) +{ + struct PPC440PCIXState *s = opaque; + uint32_t val; + + switch (addr) { + case PCI_VENDOR_ID ... PCI_MAX_LAT: + val = ldl_le_p(s->dev->config + addr); + break; + + case PCIX0_POM0LAL: + val = s->pom[0].la; + break; + case PCIX0_POM0LAH: + val = s->pom[0].la >> 32; + break; + case PCIX0_POM0SA: + val = s->pom[0].sa; + break; + case PCIX0_POM0PCIAL: + val = s->pom[0].pcia; + break; + case PCIX0_POM0PCIAH: + val = s->pom[0].pcia >> 32; + break; + case PCIX0_POM1LAL: + val = s->pom[1].la; + break; + case PCIX0_POM1LAH: + val = s->pom[1].la >> 32; + break; + case PCIX0_POM1SA: + val = s->pom[1].sa; + break; + case PCIX0_POM1PCIAL: + val = s->pom[1].pcia; + break; + case PCIX0_POM1PCIAH: + val = s->pom[1].pcia >> 32; + break; + case PCIX0_POM2SA: + val = s->pom[2].sa; + break; + + case PCIX0_PIM0SAL: + val = s->pim[0].sa; + break; + case PCIX0_PIM0LAL: + val = s->pim[0].la; + break; + case PCIX0_PIM0LAH: + val = s->pim[0].la >> 32; + break; + case PCIX0_PIM1SA: + val = s->pim[1].sa; + break; + case PCIX0_PIM1LAL: + val = s->pim[1].la; + break; + case PCIX0_PIM1LAH: + val = s->pim[1].la >> 32; + break; + case PCIX0_PIM2SAL: + val = s->pim[2].sa; + break; + case PCIX0_PIM2LAL: + val = s->pim[2].la; + break; + case PCIX0_PIM2LAH: + val = s->pim[2].la >> 32; + break; + + case PCIX0_STS: + val = s->sts; + break; + + case PCIX0_PIM0SAH: + val = s->pim[0].sa >> 32; + break; + case PCIX0_PIM2SAH: + val = s->pim[2].sa >> 32; + break; + + default: + qemu_log_mask(LOG_UNIMP, + "%s: invalid PCI internal register 0x%" HWADDR_PRIx "\n", + __func__, addr); + val = 0; + } + + trace_ppc440_pcix_reg_read(addr, val); + return val; +} + +static const MemoryRegionOps pci_reg_ops = { + .read = ppc440_pcix_reg_read4, + .write = ppc440_pcix_reg_write4, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void ppc440_pcix_reset(DeviceState *dev) +{ + struct PPC440PCIXState *s = PPC440_PCIX_HOST(dev); + int i; + + for (i = 0; i < PPC440_PCIX_NR_POMS; i++) { + ppc440_pcix_clear_region(get_system_memory(), &s->pom[i].mr); + } + for (i = 0; i < PPC440_PCIX_NR_PIMS; i++) { + ppc440_pcix_clear_region(&s->bm, &s->pim[i].mr); + } + memset(s->pom, 0, sizeof(s->pom)); + memset(s->pim, 0, sizeof(s->pim)); + for (i = 0; i < PPC440_PCIX_NR_PIMS; i++) { + s->pim[i].sa = 0xffffffff00000000ULL; + } + s->sts = 0; +} + +/* + * All four IRQ[ABCD] pins from all slots are tied to a single board + * IRQ, so our mapping function here maps everything to IRQ 0. + * The code in pci_change_irq_level() tracks the number of times + * the mapped IRQ is asserted and deasserted, so if multiple devices + * assert an IRQ at the same time the behaviour is correct. + * + * This may need further refactoring for boards that use multiple IRQ lines. + */ +static int ppc440_pcix_map_irq(PCIDevice *pci_dev, int irq_num) +{ + trace_ppc440_pcix_map_irq(pci_dev->devfn, irq_num, 0); + return 0; +} + +static void ppc440_pcix_set_irq(void *opaque, int irq_num, int level) +{ + qemu_irq *pci_irq = opaque; + + trace_ppc440_pcix_set_irq(irq_num); + if (irq_num < 0) { + error_report("%s: PCI irq %d", __func__, irq_num); + return; + } + qemu_set_irq(*pci_irq, level); +} + +static AddressSpace *ppc440_pcix_set_iommu(PCIBus *b, void *opaque, int devfn) +{ + PPC440PCIXState *s = opaque; + + return &s->bm_as; +} + +static const PCIIOMMUOps ppc440_iommu_ops = { + .get_address_space = ppc440_pcix_set_iommu, +}; + +/* + * Some guests on sam460ex write all kinds of garbage here such as + * missing enable bit and low bits set and still expect this to work + * (apparently it does on real hardware because these boot there) so + * we have to override these ops here and fix it up + */ +static void pci_host_config_write(void *opaque, hwaddr addr, + uint64_t val, unsigned len) +{ + PCIHostState *s = opaque; + + if (addr != 0 || len != 4) { + return; + } + s->config_reg = (val & 0xfffffffcULL) | (1UL << 31); +} + +static uint64_t pci_host_config_read(void *opaque, hwaddr addr, + unsigned len) +{ + PCIHostState *s = opaque; + uint32_t val = s->config_reg; + + return val; +} + +const MemoryRegionOps ppc440_pcix_host_conf_ops = { + .read = pci_host_config_read, + .write = pci_host_config_write, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void ppc440_pcix_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + PPC440PCIXState *s; + PCIHostState *h; + + h = PCI_HOST_BRIDGE(dev); + s = PPC440_PCIX_HOST(dev); + + sysbus_init_irq(sbd, &s->irq); + memory_region_init(&s->busmem, OBJECT(dev), "pci-mem", UINT64_MAX); + memory_region_init(&s->iomem, OBJECT(dev), "pci-io", 64 * KiB); + h->bus = pci_register_root_bus(dev, NULL, ppc440_pcix_set_irq, + ppc440_pcix_map_irq, &s->irq, &s->busmem, &s->iomem, + PCI_DEVFN(0, 0), 1, TYPE_PCI_BUS); + + s->dev = pci_create_simple(h->bus, PCI_DEVFN(0, 0), + TYPE_PPC4xx_HOST_BRIDGE); + + memory_region_init(&s->bm, OBJECT(s), "bm-ppc440-pcix", UINT64_MAX); + memory_region_add_subregion(&s->bm, 0x0, &s->busmem); + address_space_init(&s->bm_as, &s->bm, "pci-bm"); + pci_setup_iommu(h->bus, &ppc440_iommu_ops, s); + + memory_region_init(&s->container, OBJECT(s), "pci-container", PCI_ALL_SIZE); + memory_region_init_io(&h->conf_mem, OBJECT(s), &ppc440_pcix_host_conf_ops, + h, "pci-conf-idx", 4); + memory_region_init_io(&h->data_mem, OBJECT(s), &pci_host_data_le_ops, + h, "pci-conf-data", 4); + memory_region_init_io(&s->regs, OBJECT(s), &pci_reg_ops, s, "pci-reg", + PPC440_REG_SIZE); + memory_region_add_subregion(&s->container, PCIC0_CFGADDR, &h->conf_mem); + memory_region_add_subregion(&s->container, PCIC0_CFGDATA, &h->data_mem); + memory_region_add_subregion(&s->container, PPC440_REG_BASE, &s->regs); + sysbus_init_mmio(sbd, &s->container); + sysbus_init_mmio(sbd, &s->iomem); +} + +static void ppc440_pcix_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = ppc440_pcix_realize; + dc->reset = ppc440_pcix_reset; +} + +static const TypeInfo ppc440_pcix_info = { + .name = TYPE_PPC440_PCIX_HOST, + .parent = TYPE_PCI_HOST_BRIDGE, + .instance_size = sizeof(PPC440PCIXState), + .class_init = ppc440_pcix_class_init, +}; + +static void ppc440_pcix_register_types(void) +{ + type_register_static(&ppc440_pcix_info); +} + +type_init(ppc440_pcix_register_types) diff --git a/hw/pci-host/trace-events b/hw/pci-host/trace-events index 90a37ebff0..0a816b9aa1 100644 --- a/hw/pci-host/trace-events +++ b/hw/pci-host/trace-events @@ -41,6 +41,14 @@ unin_read(uint64_t addr, uint64_t value) "addr=0x%" PRIx64 " val=0x%"PRIx64 ppc4xx_pci_map_irq(int32_t devfn, int irq_num, int slot) "devfn 0x%x irq %d -> %d" ppc4xx_pci_set_irq(int irq_num) "PCI irq %d" +# ppc440_pcix.c +ppc440_pcix_map_irq(int32_t devfn, int irq_num, int slot) "devfn 0x%x irq %d -> %d" +ppc440_pcix_set_irq(int irq_num) "PCI irq %d" +ppc440_pcix_update_pim(int idx, uint64_t size, uint64_t la) "Added window %d of size=0x%" PRIx64 " to CPU=0x%" PRIx64 +ppc440_pcix_update_pom(int idx, uint32_t size, uint64_t la, uint64_t pcia) "Added window %d of size=0x%x from CPU=0x%" PRIx64 " to PCI=0x%" PRIx64 +ppc440_pcix_reg_read(uint64_t addr, uint32_t val) "addr 0x%" PRIx64 " = 0x%" PRIx32 +ppc440_pcix_reg_write(uint64_t addr, uint32_t val, uint32_t size) "addr 0x%" PRIx64 " = 0x%" PRIx32 " size 0x%" PRIx32 + # pnv_phb4.c pnv_phb4_xive_notify(uint64_t notif_port, uint64_t data) "notif=@0x%"PRIx64" data=0x%"PRIx64 pnv_phb4_xive_notify_ic(uint64_t addr, uint64_t data) "addr=@0x%"PRIx64" data=0x%"PRIx64 |