diff options
author | The Android Open Source Project <initial-contribution@android.com> | 2009-02-10 15:43:59 -0800 |
---|---|---|
committer | The Android Open Source Project <initial-contribution@android.com> | 2009-02-10 15:43:59 -0800 |
commit | c27f813900a3c114562efbb8df1065e94766fc48 (patch) | |
tree | d95919283707dcab61009e27007374a745c9541e /hw/pci.c | |
parent | 0852ad57fa372f9b2854e4df685eaba8d8ef6790 (diff) | |
download | external_qemu-c27f813900a3c114562efbb8df1065e94766fc48.zip external_qemu-c27f813900a3c114562efbb8df1065e94766fc48.tar.gz external_qemu-c27f813900a3c114562efbb8df1065e94766fc48.tar.bz2 |
auto import from //branches/cupcake/...@130745
Diffstat (limited to 'hw/pci.c')
-rw-r--r-- | hw/pci.c | 262 |
1 files changed, 228 insertions, 34 deletions
@@ -21,7 +21,10 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ -#include "vl.h" +#include "hw.h" +#include "pci.h" +#include "console.h" +#include "net.h" //#define DEBUG_PCI @@ -29,25 +32,83 @@ struct PCIBus { int bus_num; int devfn_min; pci_set_irq_fn set_irq; + pci_map_irq_fn map_irq; uint32_t config_reg; /* XXX: suppress */ /* low level pic */ SetIRQFunc *low_set_irq; - void *irq_opaque; + qemu_irq *irq_opaque; PCIDevice *devices[256]; + PCIDevice *parent_dev; + PCIBus *next; + /* The bus IRQ state is the logical OR of the connected devices. + Keep a count of the number of devices with raised IRQs. */ + int nirq; + int irq_count[]; }; +static void pci_update_mappings(PCIDevice *d); +static void pci_set_irq(void *opaque, int irq_num, int level); + target_phys_addr_t pci_mem_base; static int pci_irq_index; static PCIBus *first_bus; -PCIBus *pci_register_bus(pci_set_irq_fn set_irq, void *pic, int devfn_min) +static void pcibus_save(QEMUFile *f, void *opaque) +{ + PCIBus *bus = (PCIBus *)opaque; + int i; + + qemu_put_be32(f, bus->nirq); + for (i = 0; i < bus->nirq; i++) + qemu_put_be32(f, bus->irq_count[i]); +} + +static int pcibus_load(QEMUFile *f, void *opaque, int version_id) +{ + PCIBus *bus = (PCIBus *)opaque; + int i, nirq; + + if (version_id != 1) + return -EINVAL; + + nirq = qemu_get_be32(f); + if (bus->nirq != nirq) { + fprintf(stderr, "pcibus_load: nirq mismatch: src=%d dst=%d\n", + nirq, bus->nirq); + return -EINVAL; + } + + for (i = 0; i < nirq; i++) + bus->irq_count[i] = qemu_get_be32(f); + + return 0; +} + +PCIBus *pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, + qemu_irq *pic, int devfn_min, int nirq) { PCIBus *bus; - bus = qemu_mallocz(sizeof(PCIBus)); + static int nbus = 0; + + bus = qemu_mallocz(sizeof(PCIBus) + (nirq * sizeof(int))); bus->set_irq = set_irq; + bus->map_irq = map_irq; bus->irq_opaque = pic; bus->devfn_min = devfn_min; + bus->nirq = nirq; first_bus = bus; + register_savevm("PCIBUS", nbus++, 1, pcibus_save, pcibus_load, bus); + return bus; +} + +static PCIBus *pci_register_secondary_bus(PCIDevice *dev, pci_map_irq_fn map_irq) +{ + PCIBus *bus; + bus = qemu_mallocz(sizeof(PCIBus)); + bus->map_irq = map_irq; + bus->parent_dev = dev; + bus->next = dev->bus->next; + dev->bus->next = bus; return bus; } @@ -56,21 +117,31 @@ int pci_bus_num(PCIBus *s) return s->bus_num; } -void generic_pci_save(QEMUFile* f, void *opaque) +void pci_device_save(PCIDevice *s, QEMUFile *f) { - PCIDevice* s=(PCIDevice*)opaque; + int i; + qemu_put_be32(f, 2); /* PCI device version */ qemu_put_buffer(f, s->config, 256); + for (i = 0; i < 4; i++) + qemu_put_be32(f, s->irq_state[i]); } -int generic_pci_load(QEMUFile* f, void *opaque, int version_id) +int pci_device_load(PCIDevice *s, QEMUFile *f) { - PCIDevice* s=(PCIDevice*)opaque; + uint32_t version_id; + int i; - if (version_id != 1) + version_id = qemu_get_be32(f); + if (version_id > 2) return -EINVAL; - qemu_get_buffer(f, s->config, 256); + pci_update_mappings(s); + + if (version_id >= 2) + for (i = 0; i < 4; i ++) + s->irq_state[i] = qemu_get_be32(f); + return 0; } @@ -99,6 +170,7 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name, pci_dev->bus = bus; pci_dev->devfn = devfn; pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); + memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state)); if (!config_read) config_read = pci_default_read_config; @@ -108,6 +180,7 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name, pci_dev->config_write = config_write; pci_dev->irq_index = pci_irq_index++; bus->devices[devfn] = pci_dev; + pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, 4); return pci_dev; } @@ -133,7 +206,7 @@ void pci_register_io_region(PCIDevice *pci_dev, int region_num, *(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type); } -target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr) +static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr) { return addr + pci_mem_base; } @@ -221,16 +294,23 @@ uint32_t pci_default_read_config(PCIDevice *d, uint32_t address, int len) { uint32_t val; + switch(len) { - case 1: - val = d->config[address]; - break; - case 2: - val = le16_to_cpu(*(uint16_t *)(d->config + address)); - break; default: case 4: - val = le32_to_cpu(*(uint32_t *)(d->config + address)); + if (address <= 0xfc) { + val = le32_to_cpu(*(uint32_t *)(d->config + address)); + break; + } + /* fall through */ + case 2: + if (address <= 0xfe) { + val = le16_to_cpu(*(uint16_t *)(d->config + address)); + break; + } + /* fall through */ + case 1: + val = d->config[address]; break; } return val; @@ -320,7 +400,8 @@ void pci_default_write_config(PCIDevice *d, if (can_write) { d->config[addr] = val; } - addr++; + if (++addr > 0xff) + break; val >>= 8; } @@ -342,7 +423,9 @@ void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len) addr, val, len); #endif bus_num = (addr >> 16) & 0xff; - if (bus_num != 0) + while (s && s->bus_num != bus_num) + s = s->next; + if (!s) return; pci_dev = s->devices[(addr >> 8) & 0xff]; if (!pci_dev) @@ -363,7 +446,9 @@ uint32_t pci_data_read(void *opaque, uint32_t addr, int len) uint32_t val; bus_num = (addr >> 16) & 0xff; - if (bus_num != 0) + while (s && s->bus_num != bus_num) + s= s->next; + if (!s) goto fail; pci_dev = s->devices[(addr >> 8) & 0xff]; if (!pci_dev) { @@ -400,10 +485,26 @@ uint32_t pci_data_read(void *opaque, uint32_t addr, int len) /* generic PCI irq support */ /* 0 <= irq_num <= 3. level must be 0 or 1 */ -void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level) +static void pci_set_irq(void *opaque, int irq_num, int level) { - PCIBus *bus = pci_dev->bus; - bus->set_irq(pci_dev, bus->irq_opaque, irq_num, level); + PCIDevice *pci_dev = (PCIDevice *)opaque; + PCIBus *bus; + int change; + + change = level - pci_dev->irq_state[irq_num]; + if (!change) + return; + + pci_dev->irq_state[irq_num] = level; + for (;;) { + bus = pci_dev->bus; + irq_num = bus->map_irq(pci_dev, irq_num); + if (bus->set_irq) + break; + pci_dev = bus->parent_dev; + } + bus->irq_count[irq_num] += change; + bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0); } /***********************************************************/ @@ -416,12 +517,40 @@ typedef struct { static pci_class_desc pci_class_descriptions[] = { + { 0x0100, "SCSI controller"}, { 0x0101, "IDE controller"}, + { 0x0102, "Floppy controller"}, + { 0x0103, "IPI controller"}, + { 0x0104, "RAID controller"}, + { 0x0106, "SATA controller"}, + { 0x0107, "SAS controller"}, + { 0x0180, "Storage controller"}, { 0x0200, "Ethernet controller"}, + { 0x0201, "Token Ring controller"}, + { 0x0202, "FDDI controller"}, + { 0x0203, "ATM controller"}, + { 0x0280, "Network controller"}, { 0x0300, "VGA controller"}, + { 0x0301, "XGA controller"}, + { 0x0302, "3D controller"}, + { 0x0380, "Display controller"}, + { 0x0400, "Video controller"}, + { 0x0401, "Audio controller"}, + { 0x0402, "Phone"}, + { 0x0480, "Multimedia controller"}, + { 0x0500, "RAM controller"}, + { 0x0501, "Flash controller"}, + { 0x0580, "Memory controller"}, { 0x0600, "Host bridge"}, { 0x0601, "ISA bridge"}, + { 0x0602, "EISA bridge"}, + { 0x0603, "MC bridge"}, { 0x0604, "PCI bridge"}, + { 0x0605, "PCMCIA bridge"}, + { 0x0606, "NUBUS bridge"}, + { 0x0607, "CARDBUS bridge"}, + { 0x0608, "RACEWAY bridge"}, + { 0x0680, "Bridge"}, { 0x0c03, "USB controller"}, { 0, NULL} }; @@ -451,6 +580,9 @@ static void pci_info_device(PCIDevice *d) if (d->config[PCI_INTERRUPT_PIN] != 0) { term_printf(" IRQ %d.\n", d->config[PCI_INTERRUPT_LINE]); } + if (class == 0x0604) { + term_printf(" BUS %d.\n", d->config[0x19]); + } for(i = 0;i < PCI_NUM_REGIONS; i++) { r = &d->io_regions[i]; if (r->size != 0) { @@ -464,14 +596,19 @@ static void pci_info_device(PCIDevice *d) } } } + if (class == 0x0604 && d->config[0x19] != 0) { + pci_for_each_device(d->config[0x19], pci_info_device); + } } -void pci_for_each_device(void (*fn)(PCIDevice *d)) +void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d)) { PCIBus *bus = first_bus; PCIDevice *d; int devfn; + while (bus && bus->bus_num != bus_num) + bus = bus->next; if (bus) { for(devfn = 0; devfn < 256; devfn++) { d = bus->devices[devfn]; @@ -483,25 +620,82 @@ void pci_for_each_device(void (*fn)(PCIDevice *d)) void pci_info(void) { - pci_for_each_device(pci_info_device); + pci_for_each_device(0, pci_info_device); } /* Initialize a PCI NIC. */ -void pci_nic_init(PCIBus *bus, NICInfo *nd) +void pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn) { -#if 0 /* ANDROID */ +#if 0 if (strcmp(nd->model, "ne2k_pci") == 0) { - pci_ne2000_init(bus, nd); + pci_ne2000_init(bus, nd, devfn); + } else if (strcmp(nd->model, "i82551") == 0) { + pci_i82551_init(bus, nd, devfn); + } else if (strcmp(nd->model, "i82557b") == 0) { + pci_i82557b_init(bus, nd, devfn); + } else if (strcmp(nd->model, "i82559er") == 0) { + pci_i82559er_init(bus, nd, devfn); } else if (strcmp(nd->model, "rtl8139") == 0) { - pci_rtl8139_init(bus, nd); + pci_rtl8139_init(bus, nd, devfn); + } else if (strcmp(nd->model, "e1000") == 0) { + pci_e1000_init(bus, nd, devfn); } else if (strcmp(nd->model, "pcnet") == 0) { - pci_pcnet_init(bus, nd); + pci_pcnet_init(bus, nd, devfn); + } else if (strcmp(nd->model, "?") == 0) { + fprintf(stderr, "qemu: Supported PCI NICs: i82551 i82557b i82559er" + " ne2k_pci pcnet rtl8139 e1000\n"); + exit (1); } else { -#else - { -#endif fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model); exit (1); } +#endif } +typedef struct { + PCIDevice dev; + PCIBus *bus; +} PCIBridge; + +static void pci_bridge_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len) +{ + PCIBridge *s = (PCIBridge *)d; + + if (address == 0x19 || (address == 0x18 && len > 1)) { + if (address == 0x19) + s->bus->bus_num = val & 0xff; + else + s->bus->bus_num = (val >> 8) & 0xff; +#if defined(DEBUG_PCI) + printf ("pci-bridge: %s: Assigned bus %d\n", d->name, s->bus->bus_num); +#endif + } + pci_default_write_config(d, address, val, len); +} + +PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint32_t id, + pci_map_irq_fn map_irq, const char *name) +{ + PCIBridge *s; + s = (PCIBridge *)pci_register_device(bus, name, sizeof(PCIBridge), + devfn, NULL, pci_bridge_write_config); + s->dev.config[0x00] = id >> 16; + s->dev.config[0x01] = id >> 24; + s->dev.config[0x02] = id; // device_id + s->dev.config[0x03] = id >> 8; + s->dev.config[0x04] = 0x06; // command = bus master, pci mem + s->dev.config[0x05] = 0x00; + s->dev.config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error + s->dev.config[0x07] = 0x00; // status = fast devsel + s->dev.config[0x08] = 0x00; // revision + s->dev.config[0x09] = 0x00; // programming i/f + s->dev.config[0x0A] = 0x04; // class_sub = PCI to PCI bridge + s->dev.config[0x0B] = 0x06; // class_base = PCI_bridge + s->dev.config[0x0D] = 0x10; // latency_timer + s->dev.config[0x0E] = 0x81; // header_type + s->dev.config[0x1E] = 0xa0; // secondary status + + s->bus = pci_register_secondary_bus(&s->dev, map_irq); + return s->bus; +} |