diff options
author | Isaku Yamahata <yamahata@valinux.co.jp> | 2010-07-13 13:01:42 +0900 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2010-09-07 20:01:27 +0300 |
commit | 68f799944b72387c0ef9535612a212a5ea492059 (patch) | |
tree | 06be7d56583e07a9b7a3cc3db0d0f54b4332a142 | |
parent | 51a92333f8eb6d0fe685544f20ad56fc9af702f5 (diff) |
pci_bridge: introduce pci bridge library.
introduce pci bridge library.
convert apb bridge and dec p2p bridge to use new pci bridge library.
save/restore is supported as a side effect.
This is also preparation for pci express root/upstream/downstream port.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r-- | hw/apb_pci.c | 55 | ||||
-rw-r--r-- | hw/dec_pci.c | 45 | ||||
-rw-r--r-- | hw/pci_bridge.c | 122 | ||||
-rw-r--r-- | hw/pci_bridge.h | 24 | ||||
-rw-r--r-- | hw/pci_internals.h | 15 | ||||
-rw-r--r-- | qemu-common.h | 1 |
6 files changed, 178 insertions, 84 deletions
diff --git a/hw/apb_pci.c b/hw/apb_pci.c index 88ee4a9d92..c619112b12 100644 --- a/hw/apb_pci.c +++ b/hw/apb_pci.c @@ -30,6 +30,7 @@ #include "pci.h" #include "pci_host.h" #include "pci_bridge.h" +#include "pci_internals.h" #include "rwhandler.h" #include "apb_pci.h" #include "sysemu.h" @@ -294,9 +295,17 @@ static void pci_apb_set_irq(void *opaque, int irq_num, int level) } } -static void apb_pci_bridge_init(PCIBus *b) +static int apb_pci_bridge_initfn(PCIDevice *dev) { - PCIDevice *dev = pci_bridge_get_device(b); + int rc; + + rc = pci_bridge_initfn(dev); + if (rc < 0) { + return rc; + } + + pci_config_set_vendor_id(dev->config, PCI_VENDOR_ID_SUN); + pci_config_set_device_id(dev->config, PCI_DEVICE_ID_SUN_SIMBA); /* * command register: @@ -313,6 +322,7 @@ static void apb_pci_bridge_init(PCIBus *b) PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ | PCI_STATUS_DEVSEL_MEDIUM); pci_set_byte(dev->config + PCI_REVISION_ID, 0x11); + return 0; } PCIBus *pci_apb_init(target_phys_addr_t special_base, @@ -323,6 +333,8 @@ PCIBus *pci_apb_init(target_phys_addr_t special_base, SysBusDevice *s; APBState *d; unsigned int i; + PCIDevice *pci_dev; + PCIBridge *br; /* Ultrasparc PBM main bus */ dev = qdev_create(NULL, "pbm"); @@ -348,17 +360,21 @@ PCIBus *pci_apb_init(target_phys_addr_t special_base, pci_create_simple(d->bus, 0, "pbm"); /* APB secondary busses */ - *bus2 = pci_bridge_init(d->bus, PCI_DEVFN(1, 0), true, - PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_SIMBA, - pci_apb_map_irq, - "Advanced PCI Bus secondary bridge 1"); - apb_pci_bridge_init(*bus2); - - *bus3 = pci_bridge_init(d->bus, PCI_DEVFN(1, 1), true, - PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_SIMBA, - pci_apb_map_irq, - "Advanced PCI Bus secondary bridge 2"); - apb_pci_bridge_init(*bus3); + pci_dev = pci_create_multifunction(d->bus, PCI_DEVFN(1, 0), true, + "pbm-bridge"); + br = DO_UPCAST(PCIBridge, dev, pci_dev); + pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 1", + pci_apb_map_irq); + qdev_init_nofail(&pci_dev->qdev); + *bus2 = pci_bridge_get_sec_bus(br); + + pci_dev = pci_create_multifunction(d->bus, PCI_DEVFN(1, 1), true, + "pbm-bridge"); + br = DO_UPCAST(PCIBridge, dev, pci_dev); + pci_bridge_map_irq(br, "Advanced PCI Bus secondary bridge 2", + pci_apb_map_irq); + qdev_init_nofail(&pci_dev->qdev); + *bus3 = pci_bridge_get_sec_bus(br); return d->bus; } @@ -441,10 +457,23 @@ static SysBusDeviceInfo pbm_host_info = { .qdev.reset = pci_pbm_reset, .init = pci_pbm_init_device, }; + +static PCIDeviceInfo pbm_pci_bridge_info = { + .qdev.name = "pbm-bridge", + .qdev.size = sizeof(PCIBridge), + .qdev.vmsd = &vmstate_pci_device, + .qdev.reset = pci_bridge_reset, + .init = apb_pci_bridge_initfn, + .exit = pci_bridge_exitfn, + .config_write = pci_bridge_write_config, + .is_bridge = 1, +}; + static void pbm_register_devices(void) { sysbus_register_withprop(&pbm_host_info); pci_qdev_register(&pbm_pci_host_info); + pci_qdev_register(&pbm_pci_bridge_info); } device_init(pbm_register_devices) diff --git a/hw/dec_pci.c b/hw/dec_pci.c index f7a9cdcfc3..aa07ab7d84 100644 --- a/hw/dec_pci.c +++ b/hw/dec_pci.c @@ -28,6 +28,7 @@ #include "pci.h" #include "pci_host.h" #include "pci_bridge.h" +#include "pci_internals.h" /* debug DEC */ //#define DEBUG_DEC @@ -49,18 +50,43 @@ static int dec_map_irq(PCIDevice *pci_dev, int irq_num) return irq_num; } -PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn) +static int dec_21154_initfn(PCIDevice *dev) { - DeviceState *dev; - PCIBus *ret; + int rc; + + rc = pci_bridge_initfn(dev); + if (rc < 0) { + return rc; + } + + pci_config_set_vendor_id(dev->config, PCI_VENDOR_ID_DEC); + pci_config_set_device_id(dev->config, PCI_DEVICE_ID_DEC_21154); + return 0; +} - dev = qdev_create(NULL, "dec-21154"); - qdev_init_nofail(dev); - ret = pci_bridge_init(parent_bus, devfn, false, - PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21154, - dec_map_irq, "DEC 21154 PCI-PCI bridge"); +static PCIDeviceInfo dec_21154_pci_bridge_info = { + .qdev.name = "dec-21154-p2p-bridge", + .qdev.desc = "DEC 21154 PCI-PCI bridge", + .qdev.size = sizeof(PCIBridge), + .qdev.vmsd = &vmstate_pci_device, + .qdev.reset = pci_bridge_reset, + .init = dec_21154_initfn, + .exit = pci_bridge_exitfn, + .config_write = pci_bridge_write_config, + .is_bridge = 1, +}; + +PCIBus *pci_dec_21154_init(PCIBus *parent_bus, int devfn) +{ + PCIDevice *dev; + PCIBridge *br; - return ret; + dev = pci_create_multifunction(parent_bus, devfn, false, + "dec-21154-p2p-bridge"); + br = DO_UPCAST(PCIBridge, dev, dev); + pci_bridge_map_irq(br, "DEC 21154 PCI-PCI bridge", dec_map_irq); + qdev_init_nofail(&dev->qdev); + return pci_bridge_get_sec_bus(br); } static int pci_dec_21154_init_device(SysBusDevice *dev) @@ -99,6 +125,7 @@ static void dec_register_devices(void) sysbus_register_dev("dec-21154", sizeof(DECState), pci_dec_21154_init_device); pci_qdev_register(&dec_21154_pci_host_info); + pci_qdev_register(&dec_21154_pci_bridge_info); } device_init(dec_register_devices) diff --git a/hw/pci_bridge.c b/hw/pci_bridge.c index 2f13c7dd5d..198c3c7908 100644 --- a/hw/pci_bridge.c +++ b/hw/pci_bridge.c @@ -32,12 +32,19 @@ #include "pci_bridge.h" #include "pci_internals.h" +/* Accessor function to get parent bridge device from pci bus. */ PCIDevice *pci_bridge_get_device(PCIBus *bus) { return bus->parent_dev; } -static uint32_t pci_config_get_io_base(PCIDevice *d, +/* Accessor function to get secondary bus from pci-to-pci bridge device */ +PCIBus *pci_bridge_get_sec_bus(PCIBridge *br) +{ + return &br->sec_bus; +} + +static uint32_t pci_config_get_io_base(const PCIDevice *d, uint32_t base, uint32_t base_upper16) { uint32_t val; @@ -49,13 +56,13 @@ static uint32_t pci_config_get_io_base(PCIDevice *d, return val; } -static pcibus_t pci_config_get_memory_base(PCIDevice *d, uint32_t base) +static pcibus_t pci_config_get_memory_base(const PCIDevice *d, uint32_t base) { return ((pcibus_t)pci_get_word(d->config + base) & PCI_MEMORY_RANGE_MASK) << 16; } -static pcibus_t pci_config_get_pref_base(PCIDevice *d, +static pcibus_t pci_config_get_pref_base(const PCIDevice *d, uint32_t base, uint32_t upper) { pcibus_t tmp; @@ -69,7 +76,8 @@ static pcibus_t pci_config_get_pref_base(PCIDevice *d, return val; } -pcibus_t pci_bridge_get_base(PCIDevice *bridge, uint8_t type) +/* accessor function to get bridge filtering base address */ +pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type) { pcibus_t base; if (type & PCI_BASE_ADDRESS_SPACE_IO) { @@ -87,7 +95,8 @@ pcibus_t pci_bridge_get_base(PCIDevice *bridge, uint8_t type) return base; } -pcibus_t pci_bridge_get_limit(PCIDevice *bridge, uint8_t type) +/* accessor funciton to get bridge filtering limit */ +pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type) { pcibus_t limit; if (type & PCI_BASE_ADDRESS_SPACE_IO) { @@ -106,7 +115,8 @@ pcibus_t pci_bridge_get_limit(PCIDevice *bridge, uint8_t type) return limit; } -static void pci_bridge_write_config(PCIDevice *d, +/* default write_config function for PCI-to-PCI bridge */ +void pci_bridge_write_config(PCIDevice *d, uint32_t address, uint32_t val, int len) { pci_default_write_config(d, address, val, len); @@ -122,12 +132,41 @@ static void pci_bridge_write_config(PCIDevice *d, } } -static int pci_bridge_initfn(PCIDevice *dev) +/* reset bridge specific configuration registers */ +void pci_bridge_reset_reg(PCIDevice *dev) +{ + uint8_t *conf = dev->config; + + conf[PCI_PRIMARY_BUS] = 0; + conf[PCI_SECONDARY_BUS] = 0; + conf[PCI_SUBORDINATE_BUS] = 0; + conf[PCI_SEC_LATENCY_TIMER] = 0; + + conf[PCI_IO_BASE] = 0; + conf[PCI_IO_LIMIT] = 0; + pci_set_word(conf + PCI_MEMORY_BASE, 0); + pci_set_word(conf + PCI_MEMORY_LIMIT, 0); + pci_set_word(conf + PCI_PREF_MEMORY_BASE, 0); + pci_set_word(conf + PCI_PREF_MEMORY_LIMIT, 0); + pci_set_word(conf + PCI_PREF_BASE_UPPER32, 0); + pci_set_word(conf + PCI_PREF_LIMIT_UPPER32, 0); + + pci_set_word(conf + PCI_BRIDGE_CONTROL, 0); +} + +/* default reset function for PCI-to-PCI bridge */ +void pci_bridge_reset(DeviceState *qdev) { - PCIBridge *s = DO_UPCAST(PCIBridge, dev, dev); + PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev); + pci_bridge_reset_reg(dev); +} - pci_config_set_vendor_id(s->dev.config, s->vid); - pci_config_set_device_id(s->dev.config, s->did); +/* default qdev initialization function for PCI-to-PCI bridge */ +int pci_bridge_initfn(PCIDevice *dev) +{ + PCIBus *parent = dev->bus; + PCIBridge *br = DO_UPCAST(PCIBridge, dev, dev); + PCIBus *sec_bus = &br->sec_bus; pci_set_word(dev->config + PCI_STATUS, PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); @@ -137,58 +176,35 @@ static int pci_bridge_initfn(PCIDevice *dev) PCI_HEADER_TYPE_BRIDGE; pci_set_word(dev->config + PCI_SEC_STATUS, PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK); + + qbus_create_inplace(&sec_bus->qbus, &pci_bus_info, &dev->qdev, + br->bus_name); + sec_bus->parent_dev = dev; + sec_bus->map_irq = br->map_irq; + + QLIST_INIT(&sec_bus->child); + QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling); return 0; } -static int pci_bridge_exitfn(PCIDevice *pci_dev) +/* default qdev clean up function for PCI-to-PCI bridge */ +int pci_bridge_exitfn(PCIDevice *pci_dev) { PCIBridge *s = DO_UPCAST(PCIBridge, dev, pci_dev); assert(QLIST_EMPTY(&s->sec_bus.child)); QLIST_REMOVE(&s->sec_bus, sibling); + /* qbus_free() is called automatically by qdev_free() */ return 0; } -PCIBus *pci_bridge_init(PCIBus *bus, int devfn, bool multifunction, - uint16_t vid, uint16_t did, - pci_map_irq_fn map_irq, const char *name) -{ - PCIDevice *dev; - PCIBridge *s; - PCIBus *sec_bus; - - dev = pci_create_multifunction(bus, devfn, multifunction, "pci-bridge"); - qdev_prop_set_uint32(&dev->qdev, "vendorid", vid); - qdev_prop_set_uint32(&dev->qdev, "deviceid", did); - qdev_init_nofail(&dev->qdev); - - s = DO_UPCAST(PCIBridge, dev, dev); - sec_bus = &s->sec_bus; - qbus_create_inplace(&sec_bus->qbus, &pci_bus_info, &dev->qdev, name); - sec_bus->parent_dev = dev; - sec_bus->map_irq = map_irq; - - QLIST_INIT(&sec_bus->child); - QLIST_INSERT_HEAD(&bus->child, sec_bus, sibling); - return &s->sec_bus; -} - -static PCIDeviceInfo bridge_info = { - .qdev.name = "pci-bridge", - .qdev.size = sizeof(PCIBridge), - .init = pci_bridge_initfn, - .exit = pci_bridge_exitfn, - .config_write = pci_bridge_write_config, - .is_bridge = 1, - .qdev.props = (Property[]) { - DEFINE_PROP_HEX32("vendorid", PCIBridge, vid, 0), - DEFINE_PROP_HEX32("deviceid", PCIBridge, did, 0), - DEFINE_PROP_END_OF_LIST(), - } -}; - -static void pci_register_devices(void) +/* + * before qdev initialization(qdev_init()), this function sets bus_name and + * map_irq callback which are necessry for pci_bridge_initfn() to + * initialize bus. + */ +void pci_bridge_map_irq(PCIBridge *br, const char* bus_name, + pci_map_irq_fn map_irq) { - pci_qdev_register(&bridge_info); + br->map_irq = map_irq; + br->bus_name = bus_name; } - -device_init(pci_register_devices) diff --git a/hw/pci_bridge.h b/hw/pci_bridge.h index ddb2c82e25..63ada199a5 100644 --- a/hw/pci_bridge.h +++ b/hw/pci_bridge.h @@ -29,13 +29,27 @@ #include "pci.h" PCIDevice *pci_bridge_get_device(PCIBus *bus); +PCIBus *pci_bridge_get_sec_bus(PCIBridge *br); -pcibus_t pci_bridge_get_base(PCIDevice *bridge, uint8_t type); -pcibus_t pci_bridge_get_limit(PCIDevice *bridge, uint8_t type); +pcibus_t pci_bridge_get_base(const PCIDevice *bridge, uint8_t type); +pcibus_t pci_bridge_get_limit(const PCIDevice *bridge, uint8_t type); -PCIBus *pci_bridge_init(PCIBus *bus, int devfn, bool multifunction, - uint16_t vid, uint16_t did, - pci_map_irq_fn map_irq, const char *name); +void pci_bridge_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len); +void pci_bridge_reset_reg(PCIDevice *dev); +void pci_bridge_reset(DeviceState *qdev); + +int pci_bridge_initfn(PCIDevice *pci_dev); +int pci_bridge_exitfn(PCIDevice *pci_dev); + + +/* + * before qdev initialization(qdev_init()), this function sets bus_name and + * map_irq callback which are necessry for pci_bridge_initfn() to + * initialize bus. + */ +void pci_bridge_map_irq(PCIBridge *br, const char* bus_name, + pci_map_irq_fn map_irq); #endif /* QEMU_PCI_BRIDGE_H */ /* diff --git a/hw/pci_internals.h b/hw/pci_internals.h index fa844abee1..e3c93a3cc5 100644 --- a/hw/pci_internals.h +++ b/hw/pci_internals.h @@ -5,6 +5,11 @@ * This header files is private to pci.c and pci_bridge.c * So following structures are opaque to others and shouldn't be * accessed. + * + * For pci-to-pci bridge needs to include this header file to embed + * PCIBridge in its structure or to get sizeof(PCIBridge), + * However, they shouldn't access those following members directly. + * Use accessor function in pci.h, pci_bridge.h */ extern struct BusInfo pci_bus_info; @@ -30,11 +35,13 @@ struct PCIBus { int *irq_count; }; -typedef struct { +struct PCIBridge { PCIDevice dev; + + /* private member */ PCIBus sec_bus; - uint32_t vid; - uint32_t did; -} PCIBridge; + pci_map_irq_fn map_irq; + const char *bus_name; +}; #endif /* QEMU_PCI_INTERNALS_H */ diff --git a/qemu-common.h b/qemu-common.h index 3fb2f0b375..d735235f84 100644 --- a/qemu-common.h +++ b/qemu-common.h @@ -219,6 +219,7 @@ typedef struct PCIHostState PCIHostState; typedef struct PCIExpressHost PCIExpressHost; typedef struct PCIBus PCIBus; typedef struct PCIDevice PCIDevice; +typedef struct PCIBridge PCIBridge; typedef struct SerialState SerialState; typedef struct IRQState *qemu_irq; typedef struct PCMCIACardState PCMCIACardState; |