From 91732005067f08ee989045d2522a82d804cf4c3a Mon Sep 17 00:00:00 2001 From: "Sergey Semyonov (Serge)" Date: Mon, 27 Sep 2010 11:30:31 +0000 Subject: [PATCH] devman: scan pci bus. Not yet complete. git-svn-id: svn://kolibrios.org@1628 a494cfbc-eb01-0410-851d-a64ba20cac60 --- drivers/devman/Makefile | 6 +- drivers/devman/acpi.c | 111 +-- drivers/devman/acpi_bus.h | 55 +- drivers/devman/pci/pci.c | 175 +++- drivers/devman/pci/probe.c | 419 ++++++++ drivers/devman/pci_bind.c | 98 ++ drivers/devman/pci_root.c | 149 +++ drivers/devman/scan.c | 8 +- drivers/devman/scan.cc | 1557 ++++++++++++++++++++++++++++++ drivers/include/linux/pci.h | 345 +++---- drivers/include/linux/pci_regs.h | 686 +++++++++++++ 11 files changed, 3339 insertions(+), 270 deletions(-) create mode 100644 drivers/devman/pci/probe.c create mode 100644 drivers/devman/pci_bind.c create mode 100644 drivers/devman/pci_root.c create mode 100644 drivers/devman/scan.cc create mode 100644 drivers/include/linux/pci_regs.h diff --git a/drivers/devman/Makefile b/drivers/devman/Makefile index 897356ddf7..91212d7ecd 100644 --- a/drivers/devman/Makefile +++ b/drivers/devman/Makefile @@ -1,4 +1,5 @@ + CC = gcc FASM = e:/fasm/fasm.exe @@ -27,7 +28,10 @@ NAME= acpi NAME_SRCS= acpi.c \ scan.c \ pci_irq.c \ - pci/pci.c + pci_root.c \ + pci/pci.c \ + pci/probe.c \ + pci_bind.c all: $(NAME).dll diff --git a/drivers/devman/acpi.c b/drivers/devman/acpi.c index 6f08a82157..019b463944 100644 --- a/drivers/devman/acpi.c +++ b/drivers/devman/acpi.c @@ -110,29 +110,12 @@ void print_device_tree(struct acpi_device *device) }; -/* -int acpi_pci_bind_root(struct acpi_device *device) -{ - device->ops.bind = acpi_pci_bind; - device->ops.unbind = acpi_pci_unbind; - return 0; -} -*/ static bool pci_use_crs = false; #define IORESOURCE_BUS 0x00001000 -struct acpi_pci_root { - struct list_head node; - struct acpi_device * device; - struct acpi_pci_id id; - struct pci_bus *bus; - u16 segment; - struct resource secondary; /* downstream bus range */ - -}; static LIST_HEAD(acpi_pci_roots); @@ -179,6 +162,23 @@ static ACPI_STATUS try_get_root_bridge_busnr(ACPI_HANDLE handle, } +static void acpi_pci_bridge_scan(struct acpi_device *device) +{ + int status; + struct acpi_device *child = NULL; + + if (device->flags.bus_address) + if (device->parent && device->parent->ops.bind) { + status = device->parent->ops.bind(device); + if (!status) { + list_for_each_entry(child, &device->children, node) + acpi_pci_bridge_scan(child); + } + } +} + + + struct pci_root_info { struct acpi_device *bridge; @@ -416,7 +416,7 @@ struct pci_bus* pci_acpi_scan_root(struct acpi_pci_root *root) bus = pci_create_bus(busnum, &pci_root_ops, sd); if (bus) { get_current_resources(device, busnum, domain, bus); -// bus->subordinate = pci_scan_child_bus(bus); + bus->subordinate = pci_scan_child_bus(bus); } } @@ -528,9 +528,9 @@ static int acpi_pci_root_add(struct acpi_device *device) * ----------------------- * Thus binding the ACPI and PCI devices. */ -// result = acpi_pci_bind_root(device); -// if (result) -// goto end; + result = acpi_pci_bind_root(device); + if (result) + goto end; /* * PCI Routing Table @@ -544,8 +544,8 @@ static int acpi_pci_root_add(struct acpi_device *device) /* * Scan and bind all _ADR-Based Devices */ -// list_for_each_entry(child, &device->children, node) -// acpi_pci_bridge_scan(child); + list_for_each_entry(child, &device->children, node) + acpi_pci_bridge_scan(child); return 0; @@ -761,71 +761,6 @@ err: }; -#if 0 - scan_devices(); - - { - bool retval = false; - u32_t bus, last_bus; - - if( (last_bus = PciApi(1))==-1) - return retval; - - dbgprintf("last bus %x\n", last_bus); - - for(bus=0; bus <= last_bus; bus++) - { - u32_t dev; - - for(dev = 0; dev < 32; dev++) - { - u32_t fn; - - for(fn = 0; fn < 8; fn++) - { - - u32_t id; - u32_t irq_bios, irq_acpi; - u32_t irq_pin; - u16_t pcicmd; - u32_t tmp; - - u32_t devfn = (dev<<3 )|fn; - - id = PciRead32(bus,devfn, PCI_VENDOR_ID); - - /* some broken boards return 0 or ~0 if a slot is empty: */ - if (id == 0xffffffff || id == 0x00000000 || - id == 0x0000ffff || id == 0xffff0000) - continue; - - pcicmd = PciRead16(bus,devfn, PCI_COMMAND); - if (! pcicmd & PCI_COMMAND_IO) - continue; - - tmp = PciRead32(bus,devfn, 0x3C); - - irq_bios = tmp & 0xFF; - irq_pin = (tmp >> 8) & 0xFF; - - int slot = (fn >> 3) & 0x1f; - - irq_acpi = irqtable[ dev * PCI_MAX_PINS +(irq_pin-1) ]; - - if( irq_acpi < 0) - dbgprintf("PCI: no ACPI IRQ routing for " - "device %d.%d.%d INT%c\n",bus,dev,fn,'A'+irq_pin-1); - - dbgprintf("pci device %x_%x bus %d dev %d fn %d," - "IRQ PIN %d BIOS IRQ %d ACPI IRQ %d\n", - id & 0xFFFF, id>>16, bus, dev, fn, irq_pin, irq_bios, irq_acpi); - }; - } - }; - }; -#endif - - #if 0 ACPI_STATUS diff --git a/drivers/devman/acpi_bus.h b/drivers/devman/acpi_bus.h index 4b866336ed..7ec4eeb0ab 100644 --- a/drivers/devman/acpi_bus.h +++ b/drivers/devman/acpi_bus.h @@ -1,4 +1,37 @@ +struct acpi_device; + + +/* + * ACPI Driver + * ----------- + */ + +typedef int (*acpi_op_add) (struct acpi_device * device); +typedef int (*acpi_op_remove) (struct acpi_device * device, int type); +typedef int (*acpi_op_start) (struct acpi_device * device); +//typedef int (*acpi_op_suspend) (struct acpi_device * device, +// pm_message_t state); +typedef int (*acpi_op_resume) (struct acpi_device * device); +typedef int (*acpi_op_bind) (struct acpi_device * device); +typedef int (*acpi_op_unbind) (struct acpi_device * device); +typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); + +struct acpi_bus_ops { + u32 acpi_op_add:1; + u32 acpi_op_start:1; +}; + +struct acpi_device_ops { + acpi_op_add add; + acpi_op_remove remove; + acpi_op_start start; +// acpi_op_suspend suspend; + acpi_op_resume resume; + acpi_op_bind bind; + acpi_op_unbind unbind; + acpi_op_notify notify; +}; struct resource_list { struct resource_list *next; @@ -36,12 +69,6 @@ enum acpi_bus_device_type { #define ACPI_SMBUS_IBM_HID "SMBUSIBM" -struct acpi_bus_ops -{ - u32_t acpi_op_add:1; - u32_t acpi_op_start:1; -}; - #define ACPI_ID_LEN 16 /* only 9 bytes needed here, 16 bytes are used */ /* to workaround crosscompile issues */ @@ -106,7 +133,7 @@ struct acpi_device // struct acpi_device_wakeup wakeup; // struct acpi_device_perf performance; // struct acpi_device_dir dir; -// struct acpi_device_ops ops; + struct acpi_device_ops ops; // struct acpi_driver *driver; void *driver_data; // struct device dev; @@ -115,6 +142,16 @@ struct acpi_device }; +struct acpi_pci_root { + struct list_head node; + struct acpi_device * device; + struct acpi_pci_id id; + struct pci_bus *bus; + u16 segment; + struct resource secondary; /* downstream bus range */ + +}; + #define acpi_device_bid(d) ((d)->pnp.bus_id) #define acpi_device_adr(d) ((d)->pnp.bus_address) @@ -126,3 +163,7 @@ int acpi_match_device_ids(struct acpi_device *device, const struct acpi_device_ids *ids); int acpi_pci_irq_add_prt(ACPI_HANDLE handle, struct pci_bus *bus); +int acpi_pci_bind_root(struct acpi_device *device); +struct pci_dev *acpi_get_pci_dev(ACPI_HANDLE handle); +int acpi_is_root_bridge(ACPI_HANDLE handle); + diff --git a/drivers/devman/pci/pci.c b/drivers/devman/pci/pci.c index 7c0e4bf0c6..23f236b494 100644 --- a/drivers/devman/pci/pci.c +++ b/drivers/devman/pci/pci.c @@ -7,7 +7,8 @@ LIST_HEAD(pci_root_buses); -#define IO_SPACE_LIMIT 0xffff +#define IO_SPACE_LIMIT 0xffff +#define PCIBIOS_SUCCESSFUL 0x00 struct resource ioport_resource = { .name = "PCI IO", @@ -23,13 +24,90 @@ struct resource iomem_resource = { .flags = IORESOURCE_MEM, }; +#define PCI_FIND_CAP_TTL 48 -static inline int pci_domain_nr(struct pci_bus *bus) +static int __pci_find_next_cap_ttl(struct pci_bus *bus, unsigned int devfn, + u8 pos, int cap, int *ttl) { - struct pci_sysdata *sd = bus->sysdata; - return sd->domain; + u8 id; + + while ((*ttl)--) { + pci_bus_read_config_byte(bus, devfn, pos, &pos); + if (pos < 0x40) + break; + pos &= ~3; + pci_bus_read_config_byte(bus, devfn, pos + PCI_CAP_LIST_ID, + &id); + if (id == 0xff) + break; + if (id == cap) + return pos; + pos += PCI_CAP_LIST_NEXT; + } + return 0; } +static int __pci_find_next_cap(struct pci_bus *bus, unsigned int devfn, + u8 pos, int cap) +{ + int ttl = PCI_FIND_CAP_TTL; + + return __pci_find_next_cap_ttl(bus, devfn, pos, cap, &ttl); +} +static int __pci_bus_find_cap_start(struct pci_bus *bus, + unsigned int devfn, u8 hdr_type) +{ + u16 status; + + pci_bus_read_config_word(bus, devfn, PCI_STATUS, &status); + if (!(status & PCI_STATUS_CAP_LIST)) + return 0; + + switch (hdr_type) { + case PCI_HEADER_TYPE_NORMAL: + case PCI_HEADER_TYPE_BRIDGE: + return PCI_CAPABILITY_LIST; + case PCI_HEADER_TYPE_CARDBUS: + return PCI_CB_CAPABILITY_LIST; + default: + return 0; + } + + return 0; +} + + +/** + * pci_find_capability - query for devices' capabilities + * @dev: PCI device to query + * @cap: capability code + * + * Tell if a device supports a given PCI capability. + * Returns the address of the requested capability structure within the + * device's PCI configuration space or 0 in case the device does not + * support it. Possible values for @cap: + * + * %PCI_CAP_ID_PM Power Management + * %PCI_CAP_ID_AGP Accelerated Graphics Port + * %PCI_CAP_ID_VPD Vital Product Data + * %PCI_CAP_ID_SLOTID Slot Identification + * %PCI_CAP_ID_MSI Message Signalled Interrupts + * %PCI_CAP_ID_CHSWP CompactPCI HotSwap + * %PCI_CAP_ID_PCIX PCI-X + * %PCI_CAP_ID_EXP PCI Express + */ +int pci_find_capability(struct pci_dev *dev, int cap) +{ + int pos; + + pos = __pci_bus_find_cap_start(dev->bus, dev->devfn, dev->hdr_type); + if (pos) + pos = __pci_find_next_cap(dev->bus, dev->devfn, pos, cap); + + return pos; +} + + static struct pci_bus * pci_alloc_bus(void) { struct pci_bus *b; @@ -149,3 +227,92 @@ pci_find_next_bus(const struct pci_bus *from) } +/** + * pci_get_slot - locate PCI device for a given PCI slot + * @bus: PCI bus on which desired PCI device resides + * @devfn: encodes number of PCI slot in which the desired PCI + * device resides and the logical device number within that slot + * in case of multi-function devices. + * + * Given a PCI bus and slot/function number, the desired PCI device + * is located in the list of PCI devices. + * If the device is found, its reference count is increased and this + * function returns a pointer to its data structure. The caller must + * decrement the reference count by calling pci_dev_put(). + * If no device is found, %NULL is returned. + */ +struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn) +{ + struct list_head *tmp; + struct pci_dev *dev; + +// WARN_ON(in_interrupt()); +// down_read(&pci_bus_sem); + + list_for_each(tmp, &bus->devices) { + dev = pci_dev_b(tmp); + if (dev->devfn == devfn) + goto out; + } + + dev = NULL; + out: +// pci_dev_get(dev); +// up_read(&pci_bus_sem); + return dev; +} + + + + +/** + * pci_find_ext_capability - Find an extended capability + * @dev: PCI device to query + * @cap: capability code + * + * Returns the address of the requested extended capability structure + * within the device's PCI configuration space or 0 if the device does + * not support it. Possible values for @cap: + * + * %PCI_EXT_CAP_ID_ERR Advanced Error Reporting + * %PCI_EXT_CAP_ID_VC Virtual Channel + * %PCI_EXT_CAP_ID_DSN Device Serial Number + * %PCI_EXT_CAP_ID_PWR Power Budgeting + */ +int pci_find_ext_capability(struct pci_dev *dev, int cap) +{ + u32 header; + int ttl; + int pos = PCI_CFG_SPACE_SIZE; + + /* minimum 8 bytes per capability */ + ttl = (PCI_CFG_SPACE_EXP_SIZE - PCI_CFG_SPACE_SIZE) / 8; + + if (dev->cfg_size <= PCI_CFG_SPACE_SIZE) + return 0; + + if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL) + return 0; + + /* + * If we have no capabilities, this is indicated by cap ID, + * cap version and next pointer all being 0. + */ + if (header == 0) + return 0; + + while (ttl-- > 0) { + if (PCI_EXT_CAP_ID(header) == cap) + return pos; + + pos = PCI_EXT_CAP_NEXT(header); + if (pos < PCI_CFG_SPACE_SIZE) + break; + + if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL) + break; + } + + return 0; +} + diff --git a/drivers/devman/pci/probe.c b/drivers/devman/pci/probe.c new file mode 100644 index 0000000000..946ea53855 --- /dev/null +++ b/drivers/devman/pci/probe.c @@ -0,0 +1,419 @@ + +#include +#include +#include +#include +#include + + +#define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED) + +/** + * pci_setup_device - fill in class and map information of a device + * @dev: the device structure to fill + * + * Initialize the device structure with information about the device's + * vendor,class,memory and IO-space addresses,IRQ lines etc. + * Called at initialisation of the PCI subsystem and by CardBus services. + * Returns 0 on success and negative if unknown type of device (not normal, + * bridge or CardBus). + */ +int pci_setup_device(struct pci_dev *dev) +{ + u32 class; + u8 hdr_type; + struct pci_slot *slot; + int pos = 0; + + if (pci_read_config_byte(dev, PCI_HEADER_TYPE, &hdr_type)) + return -EIO; + + dev->sysdata = dev->bus->sysdata; +// dev->dev.parent = dev->bus->bridge; +// dev->dev.bus = &pci_bus_type; + dev->hdr_type = hdr_type & 0x7f; + dev->multifunction = !!(hdr_type & 0x80); + dev->error_state = pci_channel_io_normal; + set_pcie_port_type(dev); + + list_for_each_entry(slot, &dev->bus->slots, list) + if (PCI_SLOT(dev->devfn) == slot->number) + dev->slot = slot; + + /* Assume 32-bit PCI; let 64-bit PCI cards (which are far rarer) + set this higher, assuming the system even supports it. */ + dev->dma_mask = 0xffffffff; + +// dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(dev->bus), +// dev->bus->number, PCI_SLOT(dev->devfn), +// PCI_FUNC(dev->devfn)); + + pci_read_config_dword(dev, PCI_CLASS_REVISION, &class); + dev->revision = class & 0xff; + class >>= 8; /* upper 3 bytes */ + dev->class = class; + class >>= 8; + + dbgprintf("found [%04x:%04x] class %06x header type %02x\n", + dev->vendor, dev->device, class, dev->hdr_type); + + /* need to have dev->class ready */ + dev->cfg_size = pci_cfg_space_size(dev); + + /* "Unknown power state" */ + dev->current_state = PCI_UNKNOWN; + + /* Early fixups, before probing the BARs */ +// pci_fixup_device(pci_fixup_early, dev); + /* device class may be changed after fixup */ + class = dev->class >> 8; + + switch (dev->hdr_type) { /* header type */ + case PCI_HEADER_TYPE_NORMAL: /* standard header */ + if (class == PCI_CLASS_BRIDGE_PCI) + goto bad; + pci_read_irq(dev); + pci_read_bases(dev, 6, PCI_ROM_ADDRESS); + pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &dev->subsystem_vendor); + pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &dev->subsystem_device); + + /* + * Do the ugly legacy mode stuff here rather than broken chip + * quirk code. Legacy mode ATA controllers have fixed + * addresses. These are not always echoed in BAR0-3, and + * BAR0-3 in a few cases contain junk! + */ + if (class == PCI_CLASS_STORAGE_IDE) { + u8 progif; + pci_read_config_byte(dev, PCI_CLASS_PROG, &progif); + if ((progif & 1) == 0) { + dev->resource[0].start = 0x1F0; + dev->resource[0].end = 0x1F7; + dev->resource[0].flags = LEGACY_IO_RESOURCE; + dev->resource[1].start = 0x3F6; + dev->resource[1].end = 0x3F6; + dev->resource[1].flags = LEGACY_IO_RESOURCE; + } + if ((progif & 4) == 0) { + dev->resource[2].start = 0x170; + dev->resource[2].end = 0x177; + dev->resource[2].flags = LEGACY_IO_RESOURCE; + dev->resource[3].start = 0x376; + dev->resource[3].end = 0x376; + dev->resource[3].flags = LEGACY_IO_RESOURCE; + } + } + break; + + case PCI_HEADER_TYPE_BRIDGE: /* bridge header */ + if (class != PCI_CLASS_BRIDGE_PCI) + goto bad; + /* The PCI-to-PCI bridge spec requires that subtractive + decoding (i.e. transparent) bridge must have programming + interface code of 0x01. */ + pci_read_irq(dev); + dev->transparent = ((dev->class & 0xff) == 1); + pci_read_bases(dev, 2, PCI_ROM_ADDRESS1); + set_pcie_hotplug_bridge(dev); + pos = pci_find_capability(dev, PCI_CAP_ID_SSVID); + if (pos) { + pci_read_config_word(dev, pos + PCI_SSVID_VENDOR_ID, &dev->subsystem_vendor); + pci_read_config_word(dev, pos + PCI_SSVID_DEVICE_ID, &dev->subsystem_device); + } + break; + + case PCI_HEADER_TYPE_CARDBUS: /* CardBus bridge header */ + if (class != PCI_CLASS_BRIDGE_CARDBUS) + goto bad; + pci_read_irq(dev); + pci_read_bases(dev, 1, 0); + pci_read_config_word(dev, PCI_CB_SUBSYSTEM_VENDOR_ID, &dev->subsystem_vendor); + pci_read_config_word(dev, PCI_CB_SUBSYSTEM_ID, &dev->subsystem_device); + break; + + default: /* unknown header */ + dbgprintf("unknown header type %02x, " + "ignoring device\n", dev->hdr_type); + return -EIO; + + bad: + dbgprintf("ignoring class %02x (doesn't match header " + "type %02x)\n", class, dev->hdr_type); + dev->class = PCI_CLASS_NOT_DEFINED; + } + + /* We found a fine healthy device, go go go... */ + return 0; +} + + + +struct pci_dev *alloc_pci_dev(void) +{ + struct pci_dev *dev; + + dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL); + if (!dev) + return NULL; + + INIT_LIST_HEAD(&dev->bus_list); + + return dev; +} + +/* + * Read the config data for a PCI device, sanity-check it + * and fill in the dev structure... + */ +static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn) +{ + struct pci_dev *dev; + u32 l; + int timeout = 10; + + if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l)) + return NULL; + + /* some broken boards return 0 or ~0 if a slot is empty: */ + if (l == 0xffffffff || l == 0x00000000 || + l == 0x0000ffff || l == 0xffff0000) + return NULL; + + /* Configuration request Retry Status */ + while (l == 0xffff0001) { + delay(timeout/10); + timeout *= 2; + if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l)) + return NULL; + /* Card hasn't responded in 60 seconds? Must be stuck. */ + if (delay > 60 * 1000) { + printk(KERN_WARNING "pci %04x:%02x:%02x.%d: not " + "responding\n", pci_domain_nr(bus), + bus->number, PCI_SLOT(devfn), + PCI_FUNC(devfn)); + return NULL; + } + } + + dev = alloc_pci_dev(); + if (!dev) + return NULL; + + dev->bus = bus; + dev->devfn = devfn; + dev->vendor = l & 0xffff; + dev->device = (l >> 16) & 0xffff; + + if (pci_setup_device(dev)) { + kfree(dev); + return NULL; + } + + return dev; +} + + +struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn) +{ + struct pci_dev *dev; + + dev = pci_get_slot(bus, devfn); + if (dev) { +// pci_dev_put(dev); + return dev; + } + + dev = pci_scan_device(bus, devfn); + if (!dev) + return NULL; + + pci_device_add(dev, bus); + + return dev; +} + +static unsigned next_ari_fn(struct pci_dev *dev, unsigned fn) +{ + u16 cap; + unsigned pos, next_fn; + + if (!dev) + return 0; + + pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI); + if (!pos) + return 0; + pci_read_config_word(dev, pos + 4, &cap); + next_fn = cap >> 8; + if (next_fn <= fn) + return 0; + return next_fn; +} + +static unsigned next_trad_fn(struct pci_dev *dev, unsigned fn) +{ + return (fn + 1) % 8; +} + +static unsigned no_next_fn(struct pci_dev *dev, unsigned fn) +{ + return 0; +} + +static int only_one_child(struct pci_bus *bus) +{ + struct pci_dev *parent = bus->self; + if (!parent || !pci_is_pcie(parent)) + return 0; + if (parent->pcie_type == PCI_EXP_TYPE_ROOT_PORT || + parent->pcie_type == PCI_EXP_TYPE_DOWNSTREAM) + return 1; + return 0; +} + +/** + * pci_scan_slot - scan a PCI slot on a bus for devices. + * @bus: PCI bus to scan + * @devfn: slot number to scan (must have zero function.) + * + * Scan a PCI slot on the specified PCI bus for devices, adding + * discovered devices to the @bus->devices list. New devices + * will not have is_added set. + * + * Returns the number of new devices found. + */ +int pci_scan_slot(struct pci_bus *bus, int devfn) +{ + unsigned fn, nr = 0; + struct pci_dev *dev; + unsigned (*next_fn)(struct pci_dev *, unsigned) = no_next_fn; + + if (only_one_child(bus) && (devfn > 0)) + return 0; /* Already scanned the entire slot */ + + dev = pci_scan_single_device(bus, devfn); + if (!dev) + return 0; + if (!dev->is_added) + nr++; + + if (pci_ari_enabled(bus)) + next_fn = next_ari_fn; + else if (dev->multifunction) + next_fn = next_trad_fn; + + for (fn = next_fn(dev, 0); fn > 0; fn = next_fn(dev, fn)) { + dev = pci_scan_single_device(bus, devfn + fn); + if (dev) { + if (!dev->is_added) + nr++; + dev->multifunction = 1; + } + } + + /* only one slot has pcie device */ + if (bus->self && nr) + pcie_aspm_init_link_state(bus->self); + + return nr; +} + + +unsigned int pci_scan_child_bus(struct pci_bus *bus) +{ + unsigned int devfn, pass, max = bus->secondary; + struct pci_dev *dev; + + dbgprintf("scanning bus\n"); + + /* Go find them, Rover! */ + for (devfn = 0; devfn < 0x100; devfn += 8) + pci_scan_slot(bus, devfn); + + /* Reserve buses for SR-IOV capability. */ + max += pci_iov_bus_range(bus); + + /* + * After performing arch-dependent fixup of the bus, look behind + * all PCI-to-PCI bridges on this bus. + */ + if (!bus->is_added) { + dbgprintf("fixups for bus\n"); + pcibios_fixup_bus(bus); + if (pci_is_root_bus(bus)) + bus->is_added = 1; + } + + for (pass=0; pass < 2; pass++) + list_for_each_entry(dev, &bus->devices, bus_list) { + if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || + dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) + max = pci_scan_bridge(bus, dev, max, pass); + } + + /* + * We've scanned the bus and so we know all about what's on + * the other side of any bridges that may be on this bus plus + * any devices. + * + * Return how far we've got finding sub-buses. + */ + dbgprintf("bus scan returning with max=%02x\n", max); + return max; +} + +/** + * pci_cfg_space_size - get the configuration space size of the PCI device. + * @dev: PCI device + * + * Regular PCI devices have 256 bytes, but PCI-X 2 and PCI Express devices + * have 4096 bytes. Even if the device is capable, that doesn't mean we can + * access it. Maybe we don't have a way to generate extended config space + * accesses, or the device is behind a reverse Express bridge. So we try + * reading the dword at 0x100 which must either be 0 or a valid extended + * capability header. + */ +int pci_cfg_space_size_ext(struct pci_dev *dev) +{ + u32 status; + int pos = PCI_CFG_SPACE_SIZE; + + if (pci_read_config_dword(dev, pos, &status) != PCIBIOS_SUCCESSFUL) + goto fail; + if (status == 0xffffffff) + goto fail; + + return PCI_CFG_SPACE_EXP_SIZE; + + fail: + return PCI_CFG_SPACE_SIZE; +} + +int pci_cfg_space_size(struct pci_dev *dev) +{ + int pos; + u32 status; + u16 class; + + class = dev->class >> 8; + if (class == PCI_CLASS_BRIDGE_HOST) + return pci_cfg_space_size_ext(dev); + + pos = pci_pcie_cap(dev); + if (!pos) { + pos = pci_find_capability(dev, PCI_CAP_ID_PCIX); + if (!pos) + goto fail; + + pci_read_config_dword(dev, pos + PCI_X_STATUS, &status); + if (!(status & (PCI_X_STATUS_266MHZ | PCI_X_STATUS_533MHZ))) + goto fail; + } + + return pci_cfg_space_size_ext(dev); + + fail: + return PCI_CFG_SPACE_SIZE; +} + + diff --git a/drivers/devman/pci_bind.c b/drivers/devman/pci_bind.c new file mode 100644 index 0000000000..02a6978dd0 --- /dev/null +++ b/drivers/devman/pci_bind.c @@ -0,0 +1,98 @@ + +#include +#include +#include +#include +#include + +#include "acpi.h" +#include "acpi_bus.h" + + +#define PREFIX "ACPI: " + + +static int acpi_pci_unbind(struct acpi_device *device) +{ + struct pci_dev *dev; + + dev = acpi_get_pci_dev(device->handle); + if (!dev) + goto out; + +// device_set_run_wake(&dev->dev, false); +// pci_acpi_remove_pm_notifier(device); + + if (!dev->subordinate) + goto out; + +// acpi_pci_irq_del_prt(dev->subordinate); + + device->ops.bind = NULL; + device->ops.unbind = NULL; + +out: +// pci_dev_put(dev); + return 0; +} + +static int acpi_pci_bind(struct acpi_device *device) +{ + ACPI_STATUS status; + ACPI_HANDLE handle; + struct pci_bus *bus; + struct pci_dev *dev; + + dev = acpi_get_pci_dev(device->handle); + if (!dev) + return 0; + +// pci_acpi_add_pm_notifier(device, dev); +// if (device->wakeup.flags.run_wake) +// device_set_run_wake(&dev->dev, true); + + /* + * Install the 'bind' function to facilitate callbacks for + * children of the P2P bridge. + */ + if (dev->subordinate) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Device %04x:%02x:%02x.%d is a PCI bridge\n", + pci_domain_nr(dev->bus), dev->bus->number, + PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn))); + device->ops.bind = acpi_pci_bind; + device->ops.unbind = acpi_pci_unbind; + } + + /* + * Evaluate and parse _PRT, if exists. This code allows parsing of + * _PRT objects within the scope of non-bridge devices. Note that + * _PRTs within the scope of a PCI bridge assume the bridge's + * subordinate bus number. + * + * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? + */ + status = AcpiGetHandle(device->handle, METHOD_NAME__PRT, &handle); + if (ACPI_FAILURE(status)) + goto out; + + if (dev->subordinate) + bus = dev->subordinate; + else + bus = dev->bus; + + acpi_pci_irq_add_prt(device->handle, bus); + +out: +// pci_dev_put(dev); + return 0; +} + +int acpi_pci_bind_root(struct acpi_device *device) +{ + device->ops.bind = acpi_pci_bind; + device->ops.unbind = acpi_pci_unbind; + + return 0; +} + diff --git a/drivers/devman/pci_root.c b/drivers/devman/pci_root.c new file mode 100644 index 0000000000..85b3aa38b1 --- /dev/null +++ b/drivers/devman/pci_root.c @@ -0,0 +1,149 @@ + +#include +#include +#include +#include +#include + +#include "acpi.h" +#include "acpi_bus.h" + + +#define PREFIX "ACPI: " + + +struct acpi_handle_node { + struct list_head node; + ACPI_HANDLE handle; +}; + +static const struct acpi_device_ids root_device_ids[] = { + {"PNP0A03", 0}, + {"", 0}, +}; + +static LIST_HEAD(acpi_pci_roots); + + +/** + * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge + * @handle - the ACPI CA node in question. + * + * Note: we could make this API take a struct acpi_device * instead, but + * for now, it's more convenient to operate on an acpi_handle. + */ +int acpi_is_root_bridge(ACPI_HANDLE handle) +{ + int ret; + struct acpi_device *device; + + ret = acpi_bus_get_device(handle, &device); + if (ret) + return 0; + + ret = acpi_match_device_ids(device, root_device_ids); + if (ret) + return 0; + else + return 1; +} + + +struct acpi_pci_root *acpi_pci_find_root(ACPI_HANDLE handle) +{ + struct acpi_pci_root *root; + + list_for_each_entry(root, &acpi_pci_roots, node) { + if (root->device->handle == handle) + return root; + } + return NULL; +} + + +/** + * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev + * @handle: the handle in question + * + * Given an ACPI CA handle, the desired PCI device is located in the + * list of PCI devices. + * + * If the device is found, its reference count is increased and this + * function returns a pointer to its data structure. The caller must + * decrement the reference count by calling pci_dev_put(). + * If no device is found, %NULL is returned. + */ +struct pci_dev *acpi_get_pci_dev(ACPI_HANDLE handle) +{ + int dev, fn; + unsigned long long adr; + ACPI_STATUS status; + ACPI_HANDLE phandle; + struct pci_bus *pbus; + struct pci_dev *pdev = NULL; + struct acpi_handle_node *node, *tmp; + struct acpi_pci_root *root; + LIST_HEAD(device_list); + + /* + * Walk up the ACPI CA namespace until we reach a PCI root bridge. + */ + phandle = handle; + while (!acpi_is_root_bridge(phandle)) { + node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL); + if (!node) + goto out; + + INIT_LIST_HEAD(&node->node); + node->handle = phandle; + list_add(&node->node, &device_list); + + status = AcpiGetParent(phandle, &phandle); + if (ACPI_FAILURE(status)) + goto out; + } + + root = acpi_pci_find_root(phandle); + if (!root) + goto out; + + pbus = root->bus; + + /* + * Now, walk back down the PCI device tree until we return to our + * original handle. Assumes that everything between the PCI root + * bridge and the device we're looking for must be a P2P bridge. + */ + list_for_each_entry(node, &device_list, node) { + ACPI_HANDLE hnd = node->handle; + status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr); + if (ACPI_FAILURE(status)) + goto out; + dev = (adr >> 16) & 0xffff; + fn = adr & 0xffff; + + pdev = pci_get_slot(pbus, PCI_DEVFN(dev, fn)); + if (!pdev || hnd == handle) + break; + + pbus = pdev->subordinate; +// pci_dev_put(pdev); + + /* + * This function may be called for a non-PCI device that has a + * PCI parent (eg. a disk under a PCI SATA controller). In that + * case pdev->subordinate will be NULL for the parent. + */ + if (!pbus) { + dbgprintf("Not a PCI-to-PCI bridge\n"); + pdev = NULL; + break; + } + } +out: + list_for_each_entry_safe(node, tmp, &device_list, node) + kfree(node); + + return pdev; +} + diff --git a/drivers/devman/scan.c b/drivers/devman/scan.c index 651c5442bf..2afd34f6b1 100644 --- a/drivers/devman/scan.c +++ b/drivers/devman/scan.c @@ -626,10 +626,10 @@ static int acpi_add_single_object(struct acpi_device **child, /* * Bind _ADR-Based Devices when hot add */ -// if (device->flags.bus_address) { -// if (device->parent && device->parent->ops.bind) -// device->parent->ops.bind(device); -// } + if (device->flags.bus_address) { + if (device->parent && device->parent->ops.bind) + device->parent->ops.bind(device); + } end: if (!result) { diff --git a/drivers/devman/scan.cc b/drivers/devman/scan.cc new file mode 100644 index 0000000000..e5047e710e --- /dev/null +++ b/drivers/devman/scan.cc @@ -0,0 +1,1557 @@ +/* + * scan.c - support for transforming the ACPI namespace into individual objects + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "internal.h" + +#define _COMPONENT ACPI_BUS_COMPONENT +ACPI_MODULE_NAME("scan"); +#define STRUCT_TO_INT(s) (*((int*)&s)) +extern struct acpi_device *acpi_root; + +#define ACPI_BUS_CLASS "system_bus" +#define ACPI_BUS_HID "LNXSYBUS" +#define ACPI_BUS_DEVICE_NAME "System Bus" + +#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent) + +static LIST_HEAD(acpi_device_list); +static LIST_HEAD(acpi_bus_id_list); +DEFINE_MUTEX(acpi_device_lock); +LIST_HEAD(acpi_wakeup_device_list); + +struct acpi_device_bus_id{ + char bus_id[15]; + unsigned int instance_no; + struct list_head node; +}; + +/* + * Creates hid/cid(s) string needed for modalias and uevent + * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get: + * char *modalias: "acpi:IBM0001:ACPI0001" +*/ +static int create_modalias(struct acpi_device *acpi_dev, char *modalias, + int size) +{ + int len; + int count; + struct acpi_hardware_id *id; + + len = snprintf(modalias, size, "acpi:"); + size -= len; + + list_for_each_entry(id, &acpi_dev->pnp.ids, list) { + count = snprintf(&modalias[len], size, "%s:", id->id); + if (count < 0 || count >= size) + return -EINVAL; + len += count; + size -= count; + } + + modalias[len] = '\0'; + return len; +} + +static ssize_t +acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + int len; + + /* Device has no HID and no CID or string is >1024 */ + len = create_modalias(acpi_dev, buf, 1024); + if (len <= 0) + return 0; + buf[len++] = '\n'; + return len; +} +static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL); + +static void acpi_bus_hot_remove_device(void *context) +{ + struct acpi_device *device; + acpi_handle handle = context; + struct acpi_object_list arg_list; + union acpi_object arg; + acpi_status status = AE_OK; + + if (acpi_bus_get_device(handle, &device)) + return; + + if (!device) + return; + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Hot-removing device %s...\n", dev_name(&device->dev))); + + if (acpi_bus_trim(device, 1)) { + printk(KERN_ERR PREFIX + "Removing device failed\n"); + return; + } + + /* power off device */ + status = acpi_evaluate_object(handle, "_PS3", NULL, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) + printk(KERN_WARNING PREFIX + "Power-off device failed\n"); + + if (device->flags.lockable) { + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = 0; + acpi_evaluate_object(handle, "_LCK", &arg_list, NULL); + } + + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = 1; + + /* + * TBD: _EJD support. + */ + status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL); + if (ACPI_FAILURE(status)) + printk(KERN_WARNING PREFIX + "Eject device failed\n"); + + return; +} + +static ssize_t +acpi_eject_store(struct device *d, struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret = count; + acpi_status status; + acpi_object_type type = 0; + struct acpi_device *acpi_device = to_acpi_device(d); + + if ((!count) || (buf[0] != '1')) { + return -EINVAL; + } +#ifndef FORCE_EJECT + if (acpi_device->driver == NULL) { + ret = -ENODEV; + goto err; + } +#endif + status = acpi_get_type(acpi_device->handle, &type); + if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) { + ret = -ENODEV; + goto err; + } + + acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle); +err: + return ret; +} + +static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store); + +static ssize_t +acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev)); +} +static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); + +static ssize_t +acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; + int result; + + result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path); + if (result) + goto end; + + result = sprintf(buf, "%s\n", (char*)path.pointer); + kfree(path.pointer); +end: + return result; +} +static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL); + +static int acpi_device_setup_files(struct acpi_device *dev) +{ + acpi_status status; + acpi_handle temp; + int result = 0; + + /* + * Devices gotten from FADT don't have a "path" attribute + */ + if (dev->handle) { + result = device_create_file(&dev->dev, &dev_attr_path); + if (result) + goto end; + } + + result = device_create_file(&dev->dev, &dev_attr_hid); + if (result) + goto end; + + result = device_create_file(&dev->dev, &dev_attr_modalias); + if (result) + goto end; + + /* + * If device has _EJ0, 'eject' file is created that is used to trigger + * hot-removal function from userland. + */ + status = acpi_get_handle(dev->handle, "_EJ0", &temp); + if (ACPI_SUCCESS(status)) + result = device_create_file(&dev->dev, &dev_attr_eject); +end: + return result; +} + +static void acpi_device_remove_files(struct acpi_device *dev) +{ + acpi_status status; + acpi_handle temp; + + /* + * If device has _EJ0, 'eject' file is created that is used to trigger + * hot-removal function from userland. + */ + status = acpi_get_handle(dev->handle, "_EJ0", &temp); + if (ACPI_SUCCESS(status)) + device_remove_file(&dev->dev, &dev_attr_eject); + + device_remove_file(&dev->dev, &dev_attr_modalias); + device_remove_file(&dev->dev, &dev_attr_hid); + if (dev->handle) + device_remove_file(&dev->dev, &dev_attr_path); +} +/* -------------------------------------------------------------------------- + ACPI Bus operations + -------------------------------------------------------------------------- */ + +int acpi_match_device_ids(struct acpi_device *device, + const struct acpi_device_id *ids) +{ + const struct acpi_device_id *id; + struct acpi_hardware_id *hwid; + + /* + * If the device is not present, it is unnecessary to load device + * driver for it. + */ + if (!device->status.present) + return -ENODEV; + + for (id = ids; id->id[0]; id++) + list_for_each_entry(hwid, &device->pnp.ids, list) + if (!strcmp((char *) id->id, hwid->id)) + return 0; + + return -ENOENT; +} +EXPORT_SYMBOL(acpi_match_device_ids); + +static void acpi_free_ids(struct acpi_device *device) +{ + struct acpi_hardware_id *id, *tmp; + + list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) { + kfree(id->id); + kfree(id); + } +} + +static void acpi_device_release(struct device *dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + acpi_free_ids(acpi_dev); + kfree(acpi_dev); +} + +static int acpi_device_suspend(struct device *dev, pm_message_t state) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = acpi_dev->driver; + + if (acpi_drv && acpi_drv->ops.suspend) + return acpi_drv->ops.suspend(acpi_dev, state); + return 0; +} + +static int acpi_device_resume(struct device *dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = acpi_dev->driver; + + if (acpi_drv && acpi_drv->ops.resume) + return acpi_drv->ops.resume(acpi_dev); + return 0; +} + +static int acpi_bus_match(struct device *dev, struct device_driver *drv) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = to_acpi_driver(drv); + + return !acpi_match_device_ids(acpi_dev, acpi_drv->ids); +} + +static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + int len; + + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + len = create_modalias(acpi_dev, &env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len >= (sizeof(env->buf) - env->buflen)) + return -ENOMEM; + env->buflen += len; + return 0; +} + +static void acpi_device_notify(acpi_handle handle, u32 event, void *data) +{ + struct acpi_device *device = data; + + device->driver->ops.notify(device, event); +} + +static acpi_status acpi_device_notify_fixed(void *data) +{ + struct acpi_device *device = data; + + /* Fixed hardware devices have no handles */ + acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device); + return AE_OK; +} + +static int acpi_device_install_notify_handler(struct acpi_device *device) +{ + acpi_status status; + + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) + status = + acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_device_notify_fixed, + device); + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) + status = + acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_device_notify_fixed, + device); + else + status = acpi_install_notify_handler(device->handle, + ACPI_DEVICE_NOTIFY, + acpi_device_notify, + device); + + if (ACPI_FAILURE(status)) + return -EINVAL; + return 0; +} + +static void acpi_device_remove_notify_handler(struct acpi_device *device) +{ + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) + acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_device_notify_fixed); + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) + acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_device_notify_fixed); + else + acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, + acpi_device_notify); +} + +static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *); +static int acpi_start_single_object(struct acpi_device *); +static int acpi_device_probe(struct device * dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); + int ret; + + ret = acpi_bus_driver_init(acpi_dev, acpi_drv); + if (!ret) { + if (acpi_dev->bus_ops.acpi_op_start) + acpi_start_single_object(acpi_dev); + + if (acpi_drv->ops.notify) { + ret = acpi_device_install_notify_handler(acpi_dev); + if (ret) { + if (acpi_drv->ops.remove) + acpi_drv->ops.remove(acpi_dev, + acpi_dev->removal_type); + return ret; + } + } + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Found driver [%s] for device [%s]\n", + acpi_drv->name, acpi_dev->pnp.bus_id)); + get_device(dev); + } + return ret; +} + +static int acpi_device_remove(struct device * dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = acpi_dev->driver; + + if (acpi_drv) { + if (acpi_drv->ops.notify) + acpi_device_remove_notify_handler(acpi_dev); + if (acpi_drv->ops.remove) + acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type); + } + acpi_dev->driver = NULL; + acpi_dev->driver_data = NULL; + + put_device(dev); + return 0; +} + +struct bus_type acpi_bus_type = { + .name = "acpi", + .suspend = acpi_device_suspend, + .resume = acpi_device_resume, + .match = acpi_bus_match, + .probe = acpi_device_probe, + .remove = acpi_device_remove, + .uevent = acpi_device_uevent, +}; + +static int acpi_device_register(struct acpi_device *device) +{ + int result; + struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id; + int found = 0; + + /* + * Linkage + * ------- + * Link this device to its parent and siblings. + */ + INIT_LIST_HEAD(&device->children); + INIT_LIST_HEAD(&device->node); + INIT_LIST_HEAD(&device->wakeup_list); + + new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL); + if (!new_bus_id) { + printk(KERN_ERR PREFIX "Memory allocation error\n"); + return -ENOMEM; + } + + mutex_lock(&acpi_device_lock); + /* + * Find suitable bus_id and instance number in acpi_bus_id_list + * If failed, create one and link it into acpi_bus_id_list + */ + list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) { + if (!strcmp(acpi_device_bus_id->bus_id, + acpi_device_hid(device))) { + acpi_device_bus_id->instance_no++; + found = 1; + kfree(new_bus_id); + break; + } + } + if (!found) { + acpi_device_bus_id = new_bus_id; + strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device)); + acpi_device_bus_id->instance_no = 0; + list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list); + } + dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no); + + if (device->parent) + list_add_tail(&device->node, &device->parent->children); + + if (device->wakeup.flags.valid) + list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list); + mutex_unlock(&acpi_device_lock); + + if (device->parent) + device->dev.parent = &device->parent->dev; + device->dev.bus = &acpi_bus_type; + device->dev.release = &acpi_device_release; + result = device_register(&device->dev); + if (result) { + dev_err(&device->dev, "Error registering device\n"); + goto end; + } + + result = acpi_device_setup_files(device); + if (result) + printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n", + dev_name(&device->dev)); + + device->removal_type = ACPI_BUS_REMOVAL_NORMAL; + return 0; +end: + mutex_lock(&acpi_device_lock); + if (device->parent) + list_del(&device->node); + list_del(&device->wakeup_list); + mutex_unlock(&acpi_device_lock); + return result; +} + +static void acpi_device_unregister(struct acpi_device *device, int type) +{ + mutex_lock(&acpi_device_lock); + if (device->parent) + list_del(&device->node); + + list_del(&device->wakeup_list); + mutex_unlock(&acpi_device_lock); + + acpi_detach_data(device->handle, acpi_bus_data_handler); + + acpi_device_remove_files(device); + device_unregister(&device->dev); +} + +/* -------------------------------------------------------------------------- + Driver Management + -------------------------------------------------------------------------- */ +/** + * acpi_bus_driver_init - add a device to a driver + * @device: the device to add and initialize + * @driver: driver for the device + * + * Used to initialize a device via its device driver. Called whenever a + * driver is bound to a device. Invokes the driver's add() ops. + */ +static int +acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver) +{ + int result = 0; + + if (!device || !driver) + return -EINVAL; + + if (!driver->ops.add) + return -ENOSYS; + + result = driver->ops.add(device); + if (result) { + device->driver = NULL; + device->driver_data = NULL; + return result; + } + + device->driver = driver; + + /* + * TBD - Configuration Management: Assign resources to device based + * upon possible configuration and currently allocated resources. + */ + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Driver successfully bound to device\n")); + return 0; +} + +static int acpi_start_single_object(struct acpi_device *device) +{ + int result = 0; + struct acpi_driver *driver; + + + if (!(driver = device->driver)) + return 0; + + if (driver->ops.start) { + result = driver->ops.start(device); + if (result && driver->ops.remove) + driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL); + } + + return result; +} + +/** + * acpi_bus_register_driver - register a driver with the ACPI bus + * @driver: driver being registered + * + * Registers a driver with the ACPI bus. Searches the namespace for all + * devices that match the driver's criteria and binds. Returns zero for + * success or a negative error status for failure. + */ +int acpi_bus_register_driver(struct acpi_driver *driver) +{ + int ret; + + if (acpi_disabled) + return -ENODEV; + driver->drv.name = driver->name; + driver->drv.bus = &acpi_bus_type; + driver->drv.owner = driver->owner; + + ret = driver_register(&driver->drv); + return ret; +} + +EXPORT_SYMBOL(acpi_bus_register_driver); + +/** + * acpi_bus_unregister_driver - unregisters a driver with the APIC bus + * @driver: driver to unregister + * + * Unregisters a driver with the ACPI bus. Searches the namespace for all + * devices that match the driver's criteria and unbinds. + */ +void acpi_bus_unregister_driver(struct acpi_driver *driver) +{ + driver_unregister(&driver->drv); +} + +EXPORT_SYMBOL(acpi_bus_unregister_driver); + +/* -------------------------------------------------------------------------- + Device Enumeration + -------------------------------------------------------------------------- */ +static struct acpi_device *acpi_bus_get_parent(acpi_handle handle) +{ + acpi_status status; + int ret; + struct acpi_device *device; + + /* + * Fixed hardware devices do not appear in the namespace and do not + * have handles, but we fabricate acpi_devices for them, so we have + * to deal with them specially. + */ + if (handle == NULL) + return acpi_root; + + do { + status = acpi_get_parent(handle, &handle); + if (status == AE_NULL_ENTRY) + return NULL; + if (ACPI_FAILURE(status)) + return acpi_root; + + ret = acpi_bus_get_device(handle, &device); + if (ret == 0) + return device; + } while (1); +} + +acpi_status +acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd) +{ + acpi_status status; + acpi_handle tmp; + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; + union acpi_object *obj; + + status = acpi_get_handle(handle, "_EJD", &tmp); + if (ACPI_FAILURE(status)) + return status; + + status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer); + if (ACPI_SUCCESS(status)) { + obj = buffer.pointer; + status = acpi_get_handle(ACPI_ROOT_OBJECT, obj->string.pointer, + ejd); + kfree(buffer.pointer); + } + return status; +} +EXPORT_SYMBOL_GPL(acpi_bus_get_ejd); + +void acpi_bus_data_handler(acpi_handle handle, void *context) +{ + + /* TBD */ + + return; +} + +static int acpi_bus_get_perf_flags(struct acpi_device *device) +{ + device->performance.state = ACPI_STATE_UNKNOWN; + return 0; +} + +static acpi_status +acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device, + union acpi_object *package) +{ + int i = 0; + union acpi_object *element = NULL; + + if (!device || !package || (package->package.count < 2)) + return AE_BAD_PARAMETER; + + element = &(package->package.elements[0]); + if (!element) + return AE_BAD_PARAMETER; + if (element->type == ACPI_TYPE_PACKAGE) { + if ((element->package.count < 2) || + (element->package.elements[0].type != + ACPI_TYPE_LOCAL_REFERENCE) + || (element->package.elements[1].type != ACPI_TYPE_INTEGER)) + return AE_BAD_DATA; + device->wakeup.gpe_device = + element->package.elements[0].reference.handle; + device->wakeup.gpe_number = + (u32) element->package.elements[1].integer.value; + } else if (element->type == ACPI_TYPE_INTEGER) { + device->wakeup.gpe_number = element->integer.value; + } else + return AE_BAD_DATA; + + element = &(package->package.elements[1]); + if (element->type != ACPI_TYPE_INTEGER) { + return AE_BAD_DATA; + } + device->wakeup.sleep_state = element->integer.value; + + if ((package->package.count - 2) > ACPI_MAX_HANDLES) { + return AE_NO_MEMORY; + } + device->wakeup.resources.count = package->package.count - 2; + for (i = 0; i < device->wakeup.resources.count; i++) { + element = &(package->package.elements[i + 2]); + if (element->type != ACPI_TYPE_LOCAL_REFERENCE) + return AE_BAD_DATA; + + device->wakeup.resources.handles[i] = element->reference.handle; + } + + acpi_gpe_can_wake(device->wakeup.gpe_device, device->wakeup.gpe_number); + + return AE_OK; +} + +static void acpi_bus_set_run_wake_flags(struct acpi_device *device) +{ + struct acpi_device_id button_device_ids[] = { + {"PNP0C0D", 0}, + {"PNP0C0C", 0}, + {"PNP0C0E", 0}, + {"", 0}, + }; + acpi_status status; + acpi_event_status event_status; + + device->wakeup.run_wake_count = 0; + device->wakeup.flags.notifier_present = 0; + + /* Power button, Lid switch always enable wakeup */ + if (!acpi_match_device_ids(device, button_device_ids)) { + device->wakeup.flags.run_wake = 1; + device->wakeup.flags.always_enabled = 1; + return; + } + + status = acpi_get_gpe_status(device->wakeup.gpe_device, + device->wakeup.gpe_number, + &event_status); + if (status == AE_OK) + device->wakeup.flags.run_wake = + !!(event_status & ACPI_EVENT_FLAG_HANDLE); +} + +static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device) +{ + acpi_status status = 0; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *package = NULL; + int psw_error; + + /* _PRW */ + status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRW")); + goto end; + } + + package = (union acpi_object *)buffer.pointer; + status = acpi_bus_extract_wakeup_device_power_package(device, package); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, "Extracting _PRW package")); + goto end; + } + + kfree(buffer.pointer); + + device->wakeup.flags.valid = 1; + device->wakeup.prepare_count = 0; + acpi_bus_set_run_wake_flags(device); + /* Call _PSW/_DSW object to disable its ability to wake the sleeping + * system for the ACPI device with the _PRW object. + * The _PSW object is depreciated in ACPI 3.0 and is replaced by _DSW. + * So it is necessary to call _DSW object first. Only when it is not + * present will the _PSW object used. + */ + psw_error = acpi_device_sleep_wake(device, 0, 0, 0); + if (psw_error) + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "error in _DSW or _PSW evaluation\n")); + +end: + if (ACPI_FAILURE(status)) + device->flags.wake_capable = 0; + return 0; +} + +static int acpi_bus_get_power_flags(struct acpi_device *device) +{ + acpi_status status = 0; + acpi_handle handle = NULL; + u32 i = 0; + + + /* + * Power Management Flags + */ + status = acpi_get_handle(device->handle, "_PSC", &handle); + if (ACPI_SUCCESS(status)) + device->power.flags.explicit_get = 1; + status = acpi_get_handle(device->handle, "_IRC", &handle); + if (ACPI_SUCCESS(status)) + device->power.flags.inrush_current = 1; + + /* + * Enumerate supported power management states + */ + for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) { + struct acpi_device_power_state *ps = &device->power.states[i]; + char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' }; + + /* Evaluate "_PRx" to se if power resources are referenced */ + acpi_evaluate_reference(device->handle, object_name, NULL, + &ps->resources); + if (ps->resources.count) { + device->power.flags.power_resources = 1; + ps->flags.valid = 1; + } + + /* Evaluate "_PSx" to see if we can do explicit sets */ + object_name[2] = 'S'; + status = acpi_get_handle(device->handle, object_name, &handle); + if (ACPI_SUCCESS(status)) { + ps->flags.explicit_set = 1; + ps->flags.valid = 1; + } + + /* State is valid if we have some power control */ + if (ps->resources.count || ps->flags.explicit_set) + ps->flags.valid = 1; + + ps->power = -1; /* Unknown - driver assigned */ + ps->latency = -1; /* Unknown - driver assigned */ + } + + /* Set defaults for D0 and D3 states (always valid) */ + device->power.states[ACPI_STATE_D0].flags.valid = 1; + device->power.states[ACPI_STATE_D0].power = 100; + device->power.states[ACPI_STATE_D3].flags.valid = 1; + device->power.states[ACPI_STATE_D3].power = 0; + + /* TBD: System wake support and resource requirements. */ + + device->power.state = ACPI_STATE_UNKNOWN; + acpi_bus_get_power(device->handle, &(device->power.state)); + + return 0; +} + +static int acpi_bus_get_flags(struct acpi_device *device) +{ + acpi_status status = AE_OK; + acpi_handle temp = NULL; + + + /* Presence of _STA indicates 'dynamic_status' */ + status = acpi_get_handle(device->handle, "_STA", &temp); + if (ACPI_SUCCESS(status)) + device->flags.dynamic_status = 1; + + /* Presence of _RMV indicates 'removable' */ + status = acpi_get_handle(device->handle, "_RMV", &temp); + if (ACPI_SUCCESS(status)) + device->flags.removable = 1; + + /* Presence of _EJD|_EJ0 indicates 'ejectable' */ + status = acpi_get_handle(device->handle, "_EJD", &temp); + if (ACPI_SUCCESS(status)) + device->flags.ejectable = 1; + else { + status = acpi_get_handle(device->handle, "_EJ0", &temp); + if (ACPI_SUCCESS(status)) + device->flags.ejectable = 1; + } + + /* Presence of _LCK indicates 'lockable' */ + status = acpi_get_handle(device->handle, "_LCK", &temp); + if (ACPI_SUCCESS(status)) + device->flags.lockable = 1; + + /* Presence of _PS0|_PR0 indicates 'power manageable' */ + status = acpi_get_handle(device->handle, "_PS0", &temp); + if (ACPI_FAILURE(status)) + status = acpi_get_handle(device->handle, "_PR0", &temp); + if (ACPI_SUCCESS(status)) + device->flags.power_manageable = 1; + + /* Presence of _PRW indicates wake capable */ + status = acpi_get_handle(device->handle, "_PRW", &temp); + if (ACPI_SUCCESS(status)) + device->flags.wake_capable = 1; + + /* TBD: Performance management */ + + return 0; +} + +static void acpi_device_get_busid(struct acpi_device *device) +{ + char bus_id[5] = { '?', 0 }; + struct acpi_buffer buffer = { sizeof(bus_id), bus_id }; + int i = 0; + + /* + * Bus ID + * ------ + * The device's Bus ID is simply the object name. + * TBD: Shouldn't this value be unique (within the ACPI namespace)? + */ + if (ACPI_IS_ROOT_DEVICE(device)) { + strcpy(device->pnp.bus_id, "ACPI"); + return; + } + + switch (device->device_type) { + case ACPI_BUS_TYPE_POWER_BUTTON: + strcpy(device->pnp.bus_id, "PWRF"); + break; + case ACPI_BUS_TYPE_SLEEP_BUTTON: + strcpy(device->pnp.bus_id, "SLPF"); + break; + default: + acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer); + /* Clean up trailing underscores (if any) */ + for (i = 3; i > 1; i--) { + if (bus_id[i] == '_') + bus_id[i] = '\0'; + else + break; + } + strcpy(device->pnp.bus_id, bus_id); + break; + } +} + +/* + * acpi_bay_match - see if a device is an ejectable driver bay + * + * If an acpi object is ejectable and has one of the ACPI ATA methods defined, + * then we can safely call it an ejectable drive bay + */ +static int acpi_bay_match(struct acpi_device *device){ + acpi_status status; + acpi_handle handle; + acpi_handle tmp; + acpi_handle phandle; + + handle = device->handle; + + status = acpi_get_handle(handle, "_EJ0", &tmp); + if (ACPI_FAILURE(status)) + return -ENODEV; + + if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp)))) + return 0; + + if (acpi_get_parent(handle, &phandle)) + return -ENODEV; + + if ((ACPI_SUCCESS(acpi_get_handle(phandle, "_GTF", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(phandle, "_GTM", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(phandle, "_STM", &tmp))) || + (ACPI_SUCCESS(acpi_get_handle(phandle, "_SDD", &tmp)))) + return 0; + + return -ENODEV; +} + +/* + * acpi_dock_match - see if a device has a _DCK method + */ +static int acpi_dock_match(struct acpi_device *device) +{ + acpi_handle tmp; + return acpi_get_handle(device->handle, "_DCK", &tmp); +} + +char *acpi_device_hid(struct acpi_device *device) +{ + struct acpi_hardware_id *hid; + + hid = list_first_entry(&device->pnp.ids, struct acpi_hardware_id, list); + return hid->id; +} +EXPORT_SYMBOL(acpi_device_hid); + +static void acpi_add_id(struct acpi_device *device, const char *dev_id) +{ + struct acpi_hardware_id *id; + + id = kmalloc(sizeof(*id), GFP_KERNEL); + if (!id) + return; + + id->id = kmalloc(strlen(dev_id) + 1, GFP_KERNEL); + if (!id->id) { + kfree(id); + return; + } + + strcpy(id->id, dev_id); + list_add_tail(&id->list, &device->pnp.ids); +} + +/* + * Old IBM workstations have a DSDT bug wherein the SMBus object + * lacks the SMBUS01 HID and the methods do not have the necessary "_" + * prefix. Work around this. + */ +static int acpi_ibm_smbus_match(struct acpi_device *device) +{ + acpi_handle h_dummy; + struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; + int result; + + if (!dmi_name_in_vendors("IBM")) + return -ENODEV; + + /* Look for SMBS object */ + result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path); + if (result) + return result; + + if (strcmp("SMBS", path.pointer)) { + result = -ENODEV; + goto out; + } + + /* Does it have the necessary (but misnamed) methods? */ + result = -ENODEV; + if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) && + ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) && + ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy))) + result = 0; +out: + kfree(path.pointer); + return result; +} + +static void acpi_device_set_id(struct acpi_device *device) +{ + acpi_status status; + struct acpi_device_info *info; + struct acpica_device_id_list *cid_list; + int i; + + switch (device->device_type) { + case ACPI_BUS_TYPE_DEVICE: + if (ACPI_IS_ROOT_DEVICE(device)) { + acpi_add_id(device, ACPI_SYSTEM_HID); + break; + } + + status = acpi_get_object_info(device->handle, &info); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__); + return; + } + + if (info->valid & ACPI_VALID_HID) + acpi_add_id(device, info->hardware_id.string); + if (info->valid & ACPI_VALID_CID) { + cid_list = &info->compatible_id_list; + for (i = 0; i < cid_list->count; i++) + acpi_add_id(device, cid_list->ids[i].string); + } + if (info->valid & ACPI_VALID_ADR) { + device->pnp.bus_address = info->address; + device->flags.bus_address = 1; + } + + kfree(info); + + /* + * Some devices don't reliably have _HIDs & _CIDs, so add + * synthetic HIDs to make sure drivers can find them. + */ + if (acpi_is_video_device(device)) + acpi_add_id(device, ACPI_VIDEO_HID); + else if (ACPI_SUCCESS(acpi_bay_match(device))) + acpi_add_id(device, ACPI_BAY_HID); + else if (ACPI_SUCCESS(acpi_dock_match(device))) + acpi_add_id(device, ACPI_DOCK_HID); + else if (!acpi_ibm_smbus_match(device)) + acpi_add_id(device, ACPI_SMBUS_IBM_HID); + else if (!acpi_device_hid(device) && + ACPI_IS_ROOT_DEVICE(device->parent)) { + acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */ + strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); + strcpy(device->pnp.device_class, ACPI_BUS_CLASS); + } + + break; + case ACPI_BUS_TYPE_POWER: + acpi_add_id(device, ACPI_POWER_HID); + break; + case ACPI_BUS_TYPE_PROCESSOR: + acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID); + break; + case ACPI_BUS_TYPE_THERMAL: + acpi_add_id(device, ACPI_THERMAL_HID); + break; + case ACPI_BUS_TYPE_POWER_BUTTON: + acpi_add_id(device, ACPI_BUTTON_HID_POWERF); + break; + case ACPI_BUS_TYPE_SLEEP_BUTTON: + acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF); + break; + } + + /* + * We build acpi_devices for some objects that don't have _HID or _CID, + * e.g., PCI bridges and slots. Drivers can't bind to these objects, + * but we do use them indirectly by traversing the acpi_device tree. + * This generic ID isn't useful for driver binding, but it provides + * the useful property that "every acpi_device has an ID." + */ + if (list_empty(&device->pnp.ids)) + acpi_add_id(device, "device"); +} + +static int acpi_device_set_context(struct acpi_device *device) +{ + acpi_status status; + + /* + * Context + * ------- + * Attach this 'struct acpi_device' to the ACPI object. This makes + * resolutions from handle->device very efficient. Fixed hardware + * devices have no handles, so we skip them. + */ + if (!device->handle) + return 0; + + status = acpi_attach_data(device->handle, + acpi_bus_data_handler, device); + if (ACPI_SUCCESS(status)) + return 0; + + printk(KERN_ERR PREFIX "Error attaching device data\n"); + return -ENODEV; +} + +static int acpi_bus_remove(struct acpi_device *dev, int rmdevice) +{ + if (!dev) + return -EINVAL; + + dev->removal_type = ACPI_BUS_REMOVAL_EJECT; + device_release_driver(&dev->dev); + + if (!rmdevice) + return 0; + + /* + * unbind _ADR-Based Devices when hot removal + */ + if (dev->flags.bus_address) { + if ((dev->parent) && (dev->parent->ops.unbind)) + dev->parent->ops.unbind(dev); + } + acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT); + + return 0; +} + +static int acpi_add_single_object(struct acpi_device **child, + acpi_handle handle, int type, + unsigned long long sta, + struct acpi_bus_ops *ops) +{ + int result; + struct acpi_device *device; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + + device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL); + if (!device) { + printk(KERN_ERR PREFIX "Memory allocation error\n"); + return -ENOMEM; + } + + INIT_LIST_HEAD(&device->pnp.ids); + device->device_type = type; + device->handle = handle; + device->parent = acpi_bus_get_parent(handle); + device->bus_ops = *ops; /* workround for not call .start */ + STRUCT_TO_INT(device->status) = sta; + + acpi_device_get_busid(device); + + /* + * Flags + * ----- + * Note that we only look for object handles -- cannot evaluate objects + * until we know the device is present and properly initialized. + */ + result = acpi_bus_get_flags(device); + if (result) + goto end; + + /* + * Initialize Device + * ----------------- + * TBD: Synch with Core's enumeration/initialization process. + */ + acpi_device_set_id(device); + + /* + * Power Management + * ---------------- + */ + if (device->flags.power_manageable) { + result = acpi_bus_get_power_flags(device); + if (result) + goto end; + } + + /* + * Wakeup device management + *----------------------- + */ + if (device->flags.wake_capable) { + result = acpi_bus_get_wakeup_device_flags(device); + if (result) + goto end; + } + + /* + * Performance Management + * ---------------------- + */ + if (device->flags.performance_manageable) { + result = acpi_bus_get_perf_flags(device); + if (result) + goto end; + } + + if ((result = acpi_device_set_context(device))) + goto end; + + result = acpi_device_register(device); + + /* + * Bind _ADR-Based Devices when hot add + */ + if (device->flags.bus_address) { + if (device->parent && device->parent->ops.bind) + device->parent->ops.bind(device); + } + +end: + if (!result) { + acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Adding %s [%s] parent %s\n", dev_name(&device->dev), + (char *) buffer.pointer, + device->parent ? dev_name(&device->parent->dev) : + "(null)")); + kfree(buffer.pointer); + *child = device; + } else + acpi_device_release(&device->dev); + + return result; +} + +#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ + ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) + +static int acpi_bus_type_and_status(acpi_handle handle, int *type, + unsigned long long *sta) +{ + acpi_status status; + acpi_object_type acpi_type; + + status = acpi_get_type(handle, &acpi_type); + if (ACPI_FAILURE(status)) + return -ENODEV; + + switch (acpi_type) { + case ACPI_TYPE_ANY: /* for ACPI_ROOT_OBJECT */ + case ACPI_TYPE_DEVICE: + *type = ACPI_BUS_TYPE_DEVICE; + status = acpi_bus_get_status_handle(handle, sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + break; + case ACPI_TYPE_PROCESSOR: + *type = ACPI_BUS_TYPE_PROCESSOR; + status = acpi_bus_get_status_handle(handle, sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + break; + case ACPI_TYPE_THERMAL: + *type = ACPI_BUS_TYPE_THERMAL; + *sta = ACPI_STA_DEFAULT; + break; + case ACPI_TYPE_POWER: + *type = ACPI_BUS_TYPE_POWER; + *sta = ACPI_STA_DEFAULT; + break; + default: + return -ENODEV; + } + + return 0; +} + +static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl, + void *context, void **return_value) +{ + struct acpi_bus_ops *ops = context; + int type; + unsigned long long sta; + struct acpi_device *device; + acpi_status status; + int result; + + result = acpi_bus_type_and_status(handle, &type, &sta); + if (result) + return AE_OK; + + if (!(sta & ACPI_STA_DEVICE_PRESENT) && + !(sta & ACPI_STA_DEVICE_FUNCTIONING)) + return AE_CTRL_DEPTH; + + /* + * We may already have an acpi_device from a previous enumeration. If + * so, we needn't add it again, but we may still have to start it. + */ + device = NULL; + acpi_bus_get_device(handle, &device); + if (ops->acpi_op_add && !device) + acpi_add_single_object(&device, handle, type, sta, ops); + + if (!device) + return AE_CTRL_DEPTH; + + if (ops->acpi_op_start && !(ops->acpi_op_add)) { + status = acpi_start_single_object(device); + if (ACPI_FAILURE(status)) + return AE_CTRL_DEPTH; + } + + if (!*return_value) + *return_value = device; + return AE_OK; +} + +static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops, + struct acpi_device **child) +{ + acpi_status status; + void *device = NULL; + + status = acpi_bus_check_add(handle, 0, ops, &device); + if (ACPI_SUCCESS(status)) + acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, + acpi_bus_check_add, NULL, ops, &device); + + if (child) + *child = device; + + if (device) + return 0; + else + return -ENODEV; +} + +/* + * acpi_bus_add and acpi_bus_start + * + * scan a given ACPI tree and (probably recently hot-plugged) + * create and add or starts found devices. + * + * If no devices were found -ENODEV is returned which does not + * mean that this is a real error, there just have been no suitable + * ACPI objects in the table trunk from which the kernel could create + * a device and add/start an appropriate driver. + */ + +int +acpi_bus_add(struct acpi_device **child, + struct acpi_device *parent, acpi_handle handle, int type) +{ + struct acpi_bus_ops ops; + + memset(&ops, 0, sizeof(ops)); + ops.acpi_op_add = 1; + + return acpi_bus_scan(handle, &ops, child); +} +EXPORT_SYMBOL(acpi_bus_add); + +int acpi_bus_start(struct acpi_device *device) +{ + struct acpi_bus_ops ops; + + if (!device) + return -EINVAL; + + memset(&ops, 0, sizeof(ops)); + ops.acpi_op_start = 1; + + return acpi_bus_scan(device->handle, &ops, NULL); +} +EXPORT_SYMBOL(acpi_bus_start); + +int acpi_bus_trim(struct acpi_device *start, int rmdevice) +{ + acpi_status status; + struct acpi_device *parent, *child; + acpi_handle phandle, chandle; + acpi_object_type type; + u32 level = 1; + int err = 0; + + parent = start; + phandle = start->handle; + child = chandle = NULL; + + while ((level > 0) && parent && (!err)) { + status = acpi_get_next_object(ACPI_TYPE_ANY, phandle, + chandle, &chandle); + + /* + * If this scope is exhausted then move our way back up. + */ + if (ACPI_FAILURE(status)) { + level--; + chandle = phandle; + acpi_get_parent(phandle, &phandle); + child = parent; + parent = parent->parent; + + if (level == 0) + err = acpi_bus_remove(child, rmdevice); + else + err = acpi_bus_remove(child, 1); + + continue; + } + + status = acpi_get_type(chandle, &type); + if (ACPI_FAILURE(status)) { + continue; + } + /* + * If there is a device corresponding to chandle then + * parse it (depth-first). + */ + if (acpi_bus_get_device(chandle, &child) == 0) { + level++; + phandle = chandle; + chandle = NULL; + parent = child; + } + continue; + } + return err; +} +EXPORT_SYMBOL_GPL(acpi_bus_trim); + +static int acpi_bus_scan_fixed(void) +{ + int result = 0; + struct acpi_device *device = NULL; + struct acpi_bus_ops ops; + + memset(&ops, 0, sizeof(ops)); + ops.acpi_op_add = 1; + ops.acpi_op_start = 1; + + /* + * Enumerate all fixed-feature devices. + */ + if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) { + result = acpi_add_single_object(&device, NULL, + ACPI_BUS_TYPE_POWER_BUTTON, + ACPI_STA_DEFAULT, + &ops); + } + + if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) { + result = acpi_add_single_object(&device, NULL, + ACPI_BUS_TYPE_SLEEP_BUTTON, + ACPI_STA_DEFAULT, + &ops); + } + + return result; +} + +int __init acpi_scan_init(void) +{ + int result; + struct acpi_bus_ops ops; + + memset(&ops, 0, sizeof(ops)); + ops.acpi_op_add = 1; + ops.acpi_op_start = 1; + + result = bus_register(&acpi_bus_type); + if (result) { + /* We don't want to quit even if we failed to add suspend/resume */ + printk(KERN_ERR PREFIX "Could not register bus type\n"); + } + + /* + * Enumerate devices in the ACPI namespace. + */ + result = acpi_bus_scan(ACPI_ROOT_OBJECT, &ops, &acpi_root); + + if (!result) + result = acpi_bus_scan_fixed(); + + if (result) + acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL); + + return result; +} diff --git a/drivers/include/linux/pci.h b/drivers/include/linux/pci.h index 5b295409d0..b27201e9aa 100644 --- a/drivers/include/linux/pci.h +++ b/drivers/include/linux/pci.h @@ -1,10 +1,22 @@ #include #include +#include #ifndef __PCI_H__ #define __PCI_H__ + +/* pci_slot represents a physical slot */ +struct pci_slot { + struct pci_bus *bus; /* The bus this slot is on */ + struct list_head list; /* node in list of slots on this bus */ +// struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ + unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ +// struct kobject kobj; +}; + + #define PCI_ANY_ID (~0) @@ -134,144 +146,6 @@ #define PCI_CLASS_OTHERS 0xff -/* - * Under PCI, each device has 256 bytes of configuration address space, - * of which the first 64 bytes are standardized as follows: - */ -#define PCI_VENDOR_ID 0x000 /* 16 bits */ -#define PCI_DEVICE_ID 0x002 /* 16 bits */ -#define PCI_COMMAND 0x004 /* 16 bits */ -#define PCI_COMMAND_IO 0x001 /* Enable response in I/O space */ -#define PCI_COMMAND_MEMORY 0x002 /* Enable response in Memory space */ -#define PCI_COMMAND_MASTER 0x004 /* Enable bus mastering */ -#define PCI_COMMAND_SPECIAL 0x008 /* Enable response to special cycles */ -#define PCI_COMMAND_INVALIDATE 0x010 /* Use memory write and invalidate */ -#define PCI_COMMAND_VGA_PALETTE 0x020 /* Enable palette snooping */ -#define PCI_COMMAND_PARITY 0x040 /* Enable parity checking */ -#define PCI_COMMAND_WAIT 0x080 /* Enable address/data stepping */ -#define PCI_COMMAND_SERR 0x100 /* Enable SERR */ -#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ -#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ - -#define PCI_STATUS 0x006 /* 16 bits */ -#define PCI_STATUS_CAP_LIST 0x010 /* Support Capability List */ -#define PCI_STATUS_66MHZ 0x020 /* Support 66 Mhz PCI 2.1 bus */ -#define PCI_STATUS_UDF 0x040 /* Support User Definable Features [obsolete] */ -#define PCI_STATUS_FAST_BACK 0x080 /* Accept fast-back to back */ -#define PCI_STATUS_PARITY 0x100 /* Detected parity error */ -#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ -#define PCI_STATUS_DEVSEL_FAST 0x000 -#define PCI_STATUS_DEVSEL_MEDIUM 0x200 -#define PCI_STATUS_DEVSEL_SLOW 0x400 -#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ -#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ -#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ -#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ -#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ - -#define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */ -#define PCI_REVISION_ID 0x08 /* Revision ID */ -#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ -#define PCI_CLASS_DEVICE 0x0a /* Device class */ - -#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ -#define PCI_LATENCY_TIMER 0x0d /* 8 bits */ -#define PCI_HEADER_TYPE 0x0e /* 8 bits */ -#define PCI_HEADER_TYPE_NORMAL 0 -#define PCI_HEADER_TYPE_BRIDGE 1 -#define PCI_HEADER_TYPE_CARDBUS 2 - -#define PCI_BIST 0x0f /* 8 bits */ -#define PCI_BIST_CODE_MASK 0x0f /* Return result */ -#define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ -#define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ - -/* - * Base addresses specify locations in memory or I/O space. - * Decoded size can be determined by writing a value of - * 0xffffffff to the register, and reading it back. Only - * 1 bits are decoded. - */ -#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ -#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ -#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ -#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ -#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ -#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ -#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ -#define PCI_BASE_ADDRESS_SPACE_IO 0x01 -#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 -#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 -#define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ -#define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ -#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ -#define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ -#define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL) -#define PCI_BASE_ADDRESS_IO_MASK (~0x03UL) -/* bit 1 is reserved if address_space = 1 */ - -#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ - -/* Header type 0 (normal devices) */ -#define PCI_CARDBUS_CIS 0x28 -#define PCI_SUBSYSTEM_VENDOR_ID 0x2c -#define PCI_SUBSYSTEM_ID 0x2e -#define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ -#define PCI_ROM_ADDRESS_ENABLE 0x01 -#define PCI_ROM_ADDRESS_MASK (~0x7ffUL) - -#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ -#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ - - -#define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 -#define PCI_CB_SUBSYSTEM_ID 0x42 - -#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ -#define PCI_CB_CAPABILITY_LIST 0x14 -/* Capability lists */ - -#define PCI_CAP_LIST_ID 0 /* Capability ID */ -#define PCI_CAP_ID_PM 0x01 /* Power Management */ -#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ -#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ -#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ -#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ -#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ -#define PCI_CAP_ID_PCIX 0x07 /* PCI-X */ -#define PCI_CAP_ID_HT 0x08 /* HyperTransport */ -#define PCI_CAP_ID_VNDR 0x09 /* Vendor specific capability */ -#define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */ -#define PCI_CAP_ID_EXP 0x10 /* PCI Express */ -#define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ -#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ -#define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ -#define PCI_CAP_SIZEOF 4 - - -/* AGP registers */ - -#define PCI_AGP_VERSION 2 /* BCD version number */ -#define PCI_AGP_RFU 3 /* Rest of capability flags */ -#define PCI_AGP_STATUS 4 /* Status register */ -#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ -#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ -#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ -#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ -#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ -#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ -#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ -#define PCI_AGP_COMMAND 8 /* Control register */ -#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ -#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ -#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ -#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ -#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ -#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ -#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */ -#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */ -#define PCI_AGP_SIZEOF 12 - #define PCI_MAP_REG_START 0x10 #define PCI_MAP_REG_END 0x28 @@ -334,6 +208,26 @@ #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) #define PCI_FUNC(devfn) ((devfn) & 0x07) +/* Ioctls for /proc/bus/pci/X/Y nodes. */ +#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) +#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ +#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ +#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ +#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ + + +typedef unsigned int __bitwise pci_channel_state_t; + +enum pci_channel_state { + /* I/O channel is in normal state */ + pci_channel_io_normal = (__force pci_channel_state_t) 1, + + /* I/O to channel is blocked */ + pci_channel_io_frozen = (__force pci_channel_state_t) 2, + + /* PCI card is dead */ + pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, +}; typedef unsigned int PCITAG; @@ -354,6 +248,11 @@ struct resource struct resource *parent, *sibling, *child; }; +/* This defines the direction arg to the DMA mapping routines. */ +#define PCI_DMA_BIDIRECTIONAL 0 +#define PCI_DMA_TODEVICE 1 +#define PCI_DMA_FROMDEVICE 2 +#define PCI_DMA_NONE 3 /* * For PCI devices, the region numbers are assigned this way: @@ -454,6 +353,8 @@ enum { #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ + + /* * For PCI devices, the region numbers are assigned this way: * @@ -472,32 +373,48 @@ enum { #define DEVICE_COUNT_RESOURCE 12 + +#define PCI_CFG_SPACE_SIZE 256 +#define PCI_CFG_SPACE_EXP_SIZE 4096 + + +typedef int __bitwise pci_power_t; + +#define PCI_D0 ((pci_power_t __force) 0) +#define PCI_D1 ((pci_power_t __force) 1) +#define PCI_D2 ((pci_power_t __force) 2) +#define PCI_D3hot ((pci_power_t __force) 3) +#define PCI_D3cold ((pci_power_t __force) 4) +#define PCI_UNKNOWN ((pci_power_t __force) 5) +#define PCI_POWER_ERROR ((pci_power_t __force) -1) + /* * The pci_dev structure is used to describe PCI devices. */ struct pci_dev { -// struct list_head bus_list; /* node in per-bus list */ -// struct pci_bus *bus; /* bus this device is on */ -// struct pci_bus *subordinate; /* bus this device bridges to */ + struct list_head bus_list; /* node in per-bus list */ + struct pci_bus *bus; /* bus this device is on */ + struct pci_bus *subordinate; /* bus this device bridges to */ -// void *sysdata; /* hook for sys-specific extension */ + void *sysdata; /* hook for sys-specific extension */ // struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ -// struct pci_slot *slot; /* Physical slot this device is in */ - u32_t bus; - u32_t devfn; /* encoded device & function index */ - u16_t vendor; - u16_t device; - u16_t subsystem_vendor; - u16_t subsystem_device; - u32_t class; /* 3 bytes: (base,sub,prog-if) */ - uint8_t revision; /* PCI revision, low byte of class word */ - uint8_t hdr_type; /* PCI header type (`multi' flag masked out) */ - uint8_t pcie_type; /* PCI-E device/port type */ - uint8_t rom_base_reg; /* which config register controls the ROM */ - uint8_t pin; /* which interrupt pin this device uses */ + struct pci_slot *slot; /* Physical slot this device is in */ + u32_t busnr; + unsigned int devfn; /* encoded device & function index */ + unsigned short vendor; + unsigned short device; + unsigned short subsystem_vendor; + unsigned short subsystem_device; + unsigned int class; /* 3 bytes: (base,sub,prog-if) */ + u8 revision; /* PCI revision, low byte of class word */ + u8 hdr_type; /* PCI header type (`multi' flag masked out) */ + u8 pcie_cap; /* PCI-E capability offset */ + u8 pcie_type; /* PCI-E device/port type */ + u8 rom_base_reg; /* which config register controls the ROM */ + u8 pin; /* which interrupt pin this device uses */ // struct pci_driver *driver; /* which driver has allocated this device */ - uint64_t dma_mask; /* Mask of the bits of bus address this + u64 dma_mask; /* Mask of the bits of bus address this device implements. Normally this is 0xffffffff. You only need to change this if your device has broken DMA @@ -505,21 +422,26 @@ struct pci_dev { // struct device_dma_parameters dma_parms; -// pci_power_t current_state; /* Current operating state. In ACPI-speak, - // this is D0-D3, D0 being fully functional, -// and D3 being off. */ -// int pm_cap; /* PM capability offset in the -// configuration space */ + pci_power_t current_state; /* Current operating state. In ACPI-speak, + this is D0-D3, D0 being fully functional, + and D3 being off. */ + int pm_cap; /* PM capability offset in the + configuration space */ unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ + unsigned int pme_interrupt:1; unsigned int d1_support:1; /* Low power state D1 is supported */ unsigned int d2_support:1; /* Low power state D2 is supported */ unsigned int no_d1d2:1; /* Only allow D0 and D3 */ + unsigned int mmio_always_on:1; /* disallow turning off io/mem + decoding during bar sizing */ + unsigned int wakeup_prepared:1; + unsigned int d3_delay; /* D3->D0 transition time in ms */ -// pci_channel_state_t error_state; /* current connectivity state */ + pci_channel_state_t error_state; /* current connectivity state */ struct device dev; /* Generic device interface */ -// int cfg_size; /* Size of configuration space */ + int cfg_size; /* Size of configuration space */ /* * Instead of touching interrupt line and base address registers @@ -542,12 +464,17 @@ struct pci_dev { unsigned int msix_enabled:1; unsigned int ari_enabled:1; /* ARI forwarding */ unsigned int is_managed:1; - unsigned int is_pcie:1; + unsigned int is_pcie:1; /* Obsolete. Will be removed. + Use pci_is_pcie() instead */ + unsigned int needs_freset:1; /* Dev requires fundamental reset */ unsigned int state_saved:1; unsigned int is_physfn:1; unsigned int is_virtfn:1; -// pci_dev_flags_t dev_flags; -// atomic_t enable_cnt; /* pci_enable_device has been called */ + unsigned int reset_fn:1; + unsigned int is_hotplug_bridge:1; + unsigned int __aer_firmware_first_valid:1; + unsigned int __aer_firmware_first:1; + // u32 saved_config_space[16]; /* config space saved at suspend time */ // struct hlist_head saved_cap_space; @@ -606,6 +533,28 @@ struct pci_ops int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); }; +/* + * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond + * to P2P or CardBus bridge windows) go in a table. Additional ones (for + * buses below host bridges or subtractive decode bridges) go in the list. + * Use pci_bus_for_each_resource() to iterate through all the resources. + */ + +/* + * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly + * and there's no way to program the bridge with the details of the window. + * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- + * decode bit set, because they are explicit and can be programmed with _SRS. + */ +#define PCI_SUBTRACTIVE_DECODE 0x1 + +struct pci_bus_resource { + struct list_head list; + struct resource *res; + unsigned int flags; +}; + +#define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ struct pci_bus { struct list_head node; /* node in list of buses */ @@ -638,6 +587,9 @@ struct pci_bus { #define pci_bus_b(n) list_entry(n, struct pci_bus, node) #define to_pci_bus(n) container_of(n, struct pci_bus, dev) +#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) +#define to_pci_dev(n) container_of(n, struct pci_dev, dev) +#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) static inline int pci_domain_nr(struct pci_bus *bus) @@ -645,6 +597,31 @@ static inline int pci_domain_nr(struct pci_bus *bus) struct pci_sysdata *sd = bus->sysdata; return sd->domain; } +static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } + +/* + * Error values that may be returned by PCI functions. + */ +#define PCIBIOS_SUCCESSFUL 0x00 +#define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 +#define PCIBIOS_BAD_VENDOR_ID 0x83 +#define PCIBIOS_DEVICE_NOT_FOUND 0x86 +#define PCIBIOS_BAD_REGISTER_NUMBER 0x87 +#define PCIBIOS_SET_FAILED 0x88 +#define PCIBIOS_BUFFER_TOO_SMALL 0x89 + +/* Low-level architecture-dependent routines */ + +struct pci_bus_region { + resource_size_t start; + resource_size_t end; +}; + + + + + + int enum_pci_devices(void); @@ -658,9 +635,45 @@ int pci_set_dma_mask(struct pci_dev *dev, u64 mask); struct pci_bus * pci_create_bus(int bus, struct pci_ops *ops, void *sysdata); struct pci_bus * pci_find_bus(int domain, int busnr); +int pci_find_capability(struct pci_dev *dev, int cap); +int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); +int pci_find_ext_capability(struct pci_dev *dev, int cap); +int pci_bus_find_ext_capability(struct pci_bus *bus, unsigned int devfn, + int cap); +int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); struct pci_bus * pci_find_next_bus(const struct pci_bus *from); +static inline bool pci_is_root_bus(struct pci_bus *pbus) +{ + return !(pbus->parent); +} +/** + * pci_pcie_cap - get the saved PCIe capability offset + * @dev: PCI device + * + * PCIe capability offset is calculated at PCI device initialization + * time and saved in the data structure. This function returns saved + * PCIe capability offset. Using this instead of pci_find_capability() + * reduces unnecessary search in the PCI configuration space. If you + * need to calculate PCIe capability offset from raw device for some + * reasons, please use pci_find_capability() instead. + */ +static inline int pci_pcie_cap(struct pci_dev *dev) +{ + return dev->pcie_cap; +} + +/** + * pci_is_pcie - check if the PCI device is PCI Express capable + * @dev: PCI device + * + * Retrun true if the PCI device is PCI Express capable, false otherwise. + */ +static inline bool pci_is_pcie(struct pci_dev *dev) +{ + return !!pci_pcie_cap(dev); +} #define pci_name(x) "radeon" diff --git a/drivers/include/linux/pci_regs.h b/drivers/include/linux/pci_regs.h new file mode 100644 index 0000000000..1394894f05 --- /dev/null +++ b/drivers/include/linux/pci_regs.h @@ -0,0 +1,686 @@ +/* + * pci_regs.h + * + * PCI standard defines + * Copyright 1994, Drew Eckhardt + * Copyright 1997--1999 Martin Mares + * + * For more information, please consult the following manuals (look at + * http://www.pcisig.com/ for how to get them): + * + * PCI BIOS Specification + * PCI Local Bus Specification + * PCI to PCI Bridge Specification + * PCI System Design Guide + * + * For hypertransport information, please consult the following manuals + * from http://www.hypertransport.org + * + * The Hypertransport I/O Link Specification + */ + +#ifndef LINUX_PCI_REGS_H +#define LINUX_PCI_REGS_H + +/* + * Under PCI, each device has 256 bytes of configuration address space, + * of which the first 64 bytes are standardized as follows: + */ +#define PCI_VENDOR_ID 0x00 /* 16 bits */ +#define PCI_DEVICE_ID 0x02 /* 16 bits */ +#define PCI_COMMAND 0x04 /* 16 bits */ +#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */ +#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */ +#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */ +#define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */ +#define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */ +#define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */ +#define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */ +#define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */ +#define PCI_COMMAND_SERR 0x100 /* Enable SERR */ +#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */ +#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */ + +#define PCI_STATUS 0x06 /* 16 bits */ +#define PCI_STATUS_INTERRUPT 0x08 /* Interrupt status */ +#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ +#define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */ +#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */ +#define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */ +#define PCI_STATUS_PARITY 0x100 /* Detected parity error */ +#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */ +#define PCI_STATUS_DEVSEL_FAST 0x000 +#define PCI_STATUS_DEVSEL_MEDIUM 0x200 +#define PCI_STATUS_DEVSEL_SLOW 0x400 +#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */ +#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */ +#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */ +#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */ +#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */ + +#define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */ +#define PCI_REVISION_ID 0x08 /* Revision ID */ +#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */ +#define PCI_CLASS_DEVICE 0x0a /* Device class */ + +#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */ +#define PCI_LATENCY_TIMER 0x0d /* 8 bits */ +#define PCI_HEADER_TYPE 0x0e /* 8 bits */ +#define PCI_HEADER_TYPE_NORMAL 0 +#define PCI_HEADER_TYPE_BRIDGE 1 +#define PCI_HEADER_TYPE_CARDBUS 2 + +#define PCI_BIST 0x0f /* 8 bits */ +#define PCI_BIST_CODE_MASK 0x0f /* Return result */ +#define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */ +#define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */ + +/* + * Base addresses specify locations in memory or I/O space. + * Decoded size can be determined by writing a value of + * 0xffffffff to the register, and reading it back. Only + * 1 bits are decoded. + */ +#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ +#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */ +#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */ +#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */ +#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ +#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ +#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ +#define PCI_BASE_ADDRESS_SPACE_IO 0x01 +#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 +#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 +#define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ +#define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ +#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ +#define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ +#define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL) +#define PCI_BASE_ADDRESS_IO_MASK (~0x03UL) +/* bit 1 is reserved if address_space = 1 */ + +/* Header type 0 (normal devices) */ +#define PCI_CARDBUS_CIS 0x28 +#define PCI_SUBSYSTEM_VENDOR_ID 0x2c +#define PCI_SUBSYSTEM_ID 0x2e +#define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */ +#define PCI_ROM_ADDRESS_ENABLE 0x01 +#define PCI_ROM_ADDRESS_MASK (~0x7ffUL) + +#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ + +/* 0x35-0x3b are reserved */ +#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */ +#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */ +#define PCI_MIN_GNT 0x3e /* 8 bits */ +#define PCI_MAX_LAT 0x3f /* 8 bits */ + +/* Header type 1 (PCI-to-PCI bridges) */ +#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ +#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ +#define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */ +#define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */ +#define PCI_IO_BASE 0x1c /* I/O range behind the bridge */ +#define PCI_IO_LIMIT 0x1d +#define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */ +#define PCI_IO_RANGE_TYPE_16 0x00 +#define PCI_IO_RANGE_TYPE_32 0x01 +#define PCI_IO_RANGE_MASK (~0x0fUL) +#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */ +#define PCI_MEMORY_BASE 0x20 /* Memory range behind */ +#define PCI_MEMORY_LIMIT 0x22 +#define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL +#define PCI_MEMORY_RANGE_MASK (~0x0fUL) +#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */ +#define PCI_PREF_MEMORY_LIMIT 0x26 +#define PCI_PREF_RANGE_TYPE_MASK 0x0fUL +#define PCI_PREF_RANGE_TYPE_32 0x00 +#define PCI_PREF_RANGE_TYPE_64 0x01 +#define PCI_PREF_RANGE_MASK (~0x0fUL) +#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */ +#define PCI_PREF_LIMIT_UPPER32 0x2c +#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */ +#define PCI_IO_LIMIT_UPPER16 0x32 +/* 0x34 same as for htype 0 */ +/* 0x35-0x3b is reserved */ +#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */ +/* 0x3c-0x3d are same as for htype 0 */ +#define PCI_BRIDGE_CONTROL 0x3e +#define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */ +#define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */ +#define PCI_BRIDGE_CTL_ISA 0x04 /* Enable ISA mode */ +#define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */ +#define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */ +#define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */ +#define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */ + +/* Header type 2 (CardBus bridges) */ +#define PCI_CB_CAPABILITY_LIST 0x14 +/* 0x15 reserved */ +#define PCI_CB_SEC_STATUS 0x16 /* Secondary status */ +#define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */ +#define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */ +#define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */ +#define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */ +#define PCI_CB_MEMORY_BASE_0 0x1c +#define PCI_CB_MEMORY_LIMIT_0 0x20 +#define PCI_CB_MEMORY_BASE_1 0x24 +#define PCI_CB_MEMORY_LIMIT_1 0x28 +#define PCI_CB_IO_BASE_0 0x2c +#define PCI_CB_IO_BASE_0_HI 0x2e +#define PCI_CB_IO_LIMIT_0 0x30 +#define PCI_CB_IO_LIMIT_0_HI 0x32 +#define PCI_CB_IO_BASE_1 0x34 +#define PCI_CB_IO_BASE_1_HI 0x36 +#define PCI_CB_IO_LIMIT_1 0x38 +#define PCI_CB_IO_LIMIT_1_HI 0x3a +#define PCI_CB_IO_RANGE_MASK (~0x03UL) +/* 0x3c-0x3d are same as for htype 0 */ +#define PCI_CB_BRIDGE_CONTROL 0x3e +#define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */ +#define PCI_CB_BRIDGE_CTL_SERR 0x02 +#define PCI_CB_BRIDGE_CTL_ISA 0x04 +#define PCI_CB_BRIDGE_CTL_VGA 0x08 +#define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20 +#define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */ +#define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */ +#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */ +#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200 +#define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400 +#define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40 +#define PCI_CB_SUBSYSTEM_ID 0x42 +#define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */ +/* 0x48-0x7f reserved */ + +/* Capability lists */ + +#define PCI_CAP_LIST_ID 0 /* Capability ID */ +#define PCI_CAP_ID_PM 0x01 /* Power Management */ +#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */ +#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */ +#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */ +#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */ +#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */ +#define PCI_CAP_ID_PCIX 0x07 /* PCI-X */ +#define PCI_CAP_ID_HT 0x08 /* HyperTransport */ +#define PCI_CAP_ID_VNDR 0x09 /* Vendor specific */ +#define PCI_CAP_ID_DBG 0x0A /* Debug port */ +#define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */ +#define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */ +#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ +#define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ +#define PCI_CAP_ID_EXP 0x10 /* PCI Express */ +#define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ +#define PCI_CAP_ID_AF 0x13 /* PCI Advanced Features */ +#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */ +#define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */ +#define PCI_CAP_SIZEOF 4 + +/* Power Management Registers */ + +#define PCI_PM_PMC 2 /* PM Capabilities Register */ +#define PCI_PM_CAP_VER_MASK 0x0007 /* Version */ +#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */ +#define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */ +#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */ +#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */ +#define PCI_PM_CAP_D1 0x0200 /* D1 power state support */ +#define PCI_PM_CAP_D2 0x0400 /* D2 power state support */ +#define PCI_PM_CAP_PME 0x0800 /* PME pin supported */ +#define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */ +#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */ +#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */ +#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */ +#define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */ +#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */ +#define PCI_PM_CAP_PME_SHIFT 11 /* Start of the PME Mask in PMC */ +#define PCI_PM_CTRL 4 /* PM control and status register */ +#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */ +#define PCI_PM_CTRL_NO_SOFT_RESET 0x0008 /* No reset for D3hot->D0 */ +#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */ +#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */ +#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */ +#define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */ +#define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */ +#define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */ +#define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */ +#define PCI_PM_DATA_REGISTER 7 /* (??) */ +#define PCI_PM_SIZEOF 8 + +/* AGP registers */ + +#define PCI_AGP_VERSION 2 /* BCD version number */ +#define PCI_AGP_RFU 3 /* Rest of capability flags */ +#define PCI_AGP_STATUS 4 /* Status register */ +#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */ +#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */ +#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */ +#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */ +#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */ +#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */ +#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */ +#define PCI_AGP_COMMAND 8 /* Control register */ +#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */ +#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */ +#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */ +#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */ +#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */ +#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */ +#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */ +#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */ +#define PCI_AGP_SIZEOF 12 + +/* Vital Product Data */ + +#define PCI_VPD_ADDR 2 /* Address to access (15 bits!) */ +#define PCI_VPD_ADDR_MASK 0x7fff /* Address mask */ +#define PCI_VPD_ADDR_F 0x8000 /* Write 0, 1 indicates completion */ +#define PCI_VPD_DATA 4 /* 32-bits of data returned here */ + +/* Slot Identification */ + +#define PCI_SID_ESR 2 /* Expansion Slot Register */ +#define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */ +#define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */ +#define PCI_SID_CHASSIS_NR 3 /* Chassis Number */ + +/* Message Signalled Interrupts registers */ + +#define PCI_MSI_FLAGS 2 /* Various flags */ +#define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */ +#define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */ +#define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */ +#define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */ +#define PCI_MSI_FLAGS_MASKBIT 0x100 /* 64-bit mask bits allowed */ +#define PCI_MSI_RFU 3 /* Rest of capability flags */ +#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */ +#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ +#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ +#define PCI_MSI_MASK_32 12 /* Mask bits register for 32-bit devices */ +#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ +#define PCI_MSI_MASK_64 16 /* Mask bits register for 64-bit devices */ + +/* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */ +#define PCI_MSIX_FLAGS 2 +#define PCI_MSIX_FLAGS_QSIZE 0x7FF +#define PCI_MSIX_FLAGS_ENABLE (1 << 15) +#define PCI_MSIX_FLAGS_MASKALL (1 << 14) +#define PCI_MSIX_FLAGS_BIRMASK (7 << 0) + +/* CompactPCI Hotswap Register */ + +#define PCI_CHSWP_CSR 2 /* Control and Status Register */ +#define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */ +#define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */ +#define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */ +#define PCI_CHSWP_LOO 0x08 /* LED On / Off */ +#define PCI_CHSWP_PI 0x30 /* Programming Interface */ +#define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */ +#define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */ + +/* PCI Advanced Feature registers */ + +#define PCI_AF_LENGTH 2 +#define PCI_AF_CAP 3 +#define PCI_AF_CAP_TP 0x01 +#define PCI_AF_CAP_FLR 0x02 +#define PCI_AF_CTRL 4 +#define PCI_AF_CTRL_FLR 0x01 +#define PCI_AF_STATUS 5 +#define PCI_AF_STATUS_TP 0x01 + +/* PCI-X registers */ + +#define PCI_X_CMD 2 /* Modes & Features */ +#define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */ +#define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */ +#define PCI_X_CMD_READ_512 0x0000 /* 512 byte maximum read byte count */ +#define PCI_X_CMD_READ_1K 0x0004 /* 1Kbyte maximum read byte count */ +#define PCI_X_CMD_READ_2K 0x0008 /* 2Kbyte maximum read byte count */ +#define PCI_X_CMD_READ_4K 0x000c /* 4Kbyte maximum read byte count */ +#define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */ + /* Max # of outstanding split transactions */ +#define PCI_X_CMD_SPLIT_1 0x0000 /* Max 1 */ +#define PCI_X_CMD_SPLIT_2 0x0010 /* Max 2 */ +#define PCI_X_CMD_SPLIT_3 0x0020 /* Max 3 */ +#define PCI_X_CMD_SPLIT_4 0x0030 /* Max 4 */ +#define PCI_X_CMD_SPLIT_8 0x0040 /* Max 8 */ +#define PCI_X_CMD_SPLIT_12 0x0050 /* Max 12 */ +#define PCI_X_CMD_SPLIT_16 0x0060 /* Max 16 */ +#define PCI_X_CMD_SPLIT_32 0x0070 /* Max 32 */ +#define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */ +#define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */ +#define PCI_X_STATUS 4 /* PCI-X capabilities */ +#define PCI_X_STATUS_DEVFN 0x000000ff /* A copy of devfn */ +#define PCI_X_STATUS_BUS 0x0000ff00 /* A copy of bus nr */ +#define PCI_X_STATUS_64BIT 0x00010000 /* 64-bit device */ +#define PCI_X_STATUS_133MHZ 0x00020000 /* 133 MHz capable */ +#define PCI_X_STATUS_SPL_DISC 0x00040000 /* Split Completion Discarded */ +#define PCI_X_STATUS_UNX_SPL 0x00080000 /* Unexpected Split Completion */ +#define PCI_X_STATUS_COMPLEX 0x00100000 /* Device Complexity */ +#define PCI_X_STATUS_MAX_READ 0x00600000 /* Designed Max Memory Read Count */ +#define PCI_X_STATUS_MAX_SPLIT 0x03800000 /* Designed Max Outstanding Split Transactions */ +#define PCI_X_STATUS_MAX_CUM 0x1c000000 /* Designed Max Cumulative Read Size */ +#define PCI_X_STATUS_SPL_ERR 0x20000000 /* Rcvd Split Completion Error Msg */ +#define PCI_X_STATUS_266MHZ 0x40000000 /* 266 MHz capable */ +#define PCI_X_STATUS_533MHZ 0x80000000 /* 533 MHz capable */ + +/* PCI Bridge Subsystem ID registers */ + +#define PCI_SSVID_VENDOR_ID 4 /* PCI-Bridge subsystem vendor id register */ +#define PCI_SSVID_DEVICE_ID 6 /* PCI-Bridge subsystem device id register */ + +/* PCI Express capability registers */ + +#define PCI_EXP_FLAGS 2 /* Capabilities register */ +#define PCI_EXP_FLAGS_VERS 0x000f /* Capability version */ +#define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */ +#define PCI_EXP_TYPE_ENDPOINT 0x0 /* Express Endpoint */ +#define PCI_EXP_TYPE_LEG_END 0x1 /* Legacy Endpoint */ +#define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */ +#define PCI_EXP_TYPE_UPSTREAM 0x5 /* Upstream Port */ +#define PCI_EXP_TYPE_DOWNSTREAM 0x6 /* Downstream Port */ +#define PCI_EXP_TYPE_PCI_BRIDGE 0x7 /* PCI/PCI-X Bridge */ +#define PCI_EXP_TYPE_RC_END 0x9 /* Root Complex Integrated Endpoint */ +#define PCI_EXP_TYPE_RC_EC 0x10 /* Root Complex Event Collector */ +#define PCI_EXP_FLAGS_SLOT 0x0100 /* Slot implemented */ +#define PCI_EXP_FLAGS_IRQ 0x3e00 /* Interrupt message number */ +#define PCI_EXP_DEVCAP 4 /* Device capabilities */ +#define PCI_EXP_DEVCAP_PAYLOAD 0x07 /* Max_Payload_Size */ +#define PCI_EXP_DEVCAP_PHANTOM 0x18 /* Phantom functions */ +#define PCI_EXP_DEVCAP_EXT_TAG 0x20 /* Extended tags */ +#define PCI_EXP_DEVCAP_L0S 0x1c0 /* L0s Acceptable Latency */ +#define PCI_EXP_DEVCAP_L1 0xe00 /* L1 Acceptable Latency */ +#define PCI_EXP_DEVCAP_ATN_BUT 0x1000 /* Attention Button Present */ +#define PCI_EXP_DEVCAP_ATN_IND 0x2000 /* Attention Indicator Present */ +#define PCI_EXP_DEVCAP_PWR_IND 0x4000 /* Power Indicator Present */ +#define PCI_EXP_DEVCAP_RBER 0x8000 /* Role-Based Error Reporting */ +#define PCI_EXP_DEVCAP_PWR_VAL 0x3fc0000 /* Slot Power Limit Value */ +#define PCI_EXP_DEVCAP_PWR_SCL 0xc000000 /* Slot Power Limit Scale */ +#define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */ +#define PCI_EXP_DEVCTL 8 /* Device Control */ +#define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */ +#define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */ +#define PCI_EXP_DEVCTL_FERE 0x0004 /* Fatal Error Reporting Enable */ +#define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */ +#define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */ +#define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */ +#define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */ +#define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */ +#define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */ +#define PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800 /* Enable No Snoop */ +#define PCI_EXP_DEVCTL_READRQ 0x7000 /* Max_Read_Request_Size */ +#define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */ +#define PCI_EXP_DEVSTA 10 /* Device Status */ +#define PCI_EXP_DEVSTA_CED 0x01 /* Correctable Error Detected */ +#define PCI_EXP_DEVSTA_NFED 0x02 /* Non-Fatal Error Detected */ +#define PCI_EXP_DEVSTA_FED 0x04 /* Fatal Error Detected */ +#define PCI_EXP_DEVSTA_URD 0x08 /* Unsupported Request Detected */ +#define PCI_EXP_DEVSTA_AUXPD 0x10 /* AUX Power Detected */ +#define PCI_EXP_DEVSTA_TRPND 0x20 /* Transactions Pending */ +#define PCI_EXP_LNKCAP 12 /* Link Capabilities */ +#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */ +#define PCI_EXP_LNKCAP_MLW 0x000003f0 /* Maximum Link Width */ +#define PCI_EXP_LNKCAP_ASPMS 0x00000c00 /* ASPM Support */ +#define PCI_EXP_LNKCAP_L0SEL 0x00007000 /* L0s Exit Latency */ +#define PCI_EXP_LNKCAP_L1EL 0x00038000 /* L1 Exit Latency */ +#define PCI_EXP_LNKCAP_CLKPM 0x00040000 /* L1 Clock Power Management */ +#define PCI_EXP_LNKCAP_SDERC 0x00080000 /* Suprise Down Error Reporting Capable */ +#define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */ +#define PCI_EXP_LNKCAP_LBNC 0x00200000 /* Link Bandwidth Notification Capability */ +#define PCI_EXP_LNKCAP_PN 0xff000000 /* Port Number */ +#define PCI_EXP_LNKCTL 16 /* Link Control */ +#define PCI_EXP_LNKCTL_ASPMC 0x0003 /* ASPM Control */ +#define PCI_EXP_LNKCTL_RCB 0x0008 /* Read Completion Boundary */ +#define PCI_EXP_LNKCTL_LD 0x0010 /* Link Disable */ +#define PCI_EXP_LNKCTL_RL 0x0020 /* Retrain Link */ +#define PCI_EXP_LNKCTL_CCC 0x0040 /* Common Clock Configuration */ +#define PCI_EXP_LNKCTL_ES 0x0080 /* Extended Synch */ +#define PCI_EXP_LNKCTL_CLKREQ_EN 0x100 /* Enable clkreq */ +#define PCI_EXP_LNKCTL_HAWD 0x0200 /* Hardware Autonomous Width Disable */ +#define PCI_EXP_LNKCTL_LBMIE 0x0400 /* Link Bandwidth Management Interrupt Enable */ +#define PCI_EXP_LNKCTL_LABIE 0x0800 /* Lnk Autonomous Bandwidth Interrupt Enable */ +#define PCI_EXP_LNKSTA 18 /* Link Status */ +#define PCI_EXP_LNKSTA_CLS 0x000f /* Current Link Speed */ +#define PCI_EXP_LNKSTA_CLS_2_5GB 0x01 /* Current Link Speed 2.5GT/s */ +#define PCI_EXP_LNKSTA_CLS_5_0GB 0x02 /* Current Link Speed 5.0GT/s */ +#define PCI_EXP_LNKSTA_NLW 0x03f0 /* Nogotiated Link Width */ +#define PCI_EXP_LNKSTA_NLW_SHIFT 4 /* start of NLW mask in link status */ +#define PCI_EXP_LNKSTA_LT 0x0800 /* Link Training */ +#define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */ +#define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */ +#define PCI_EXP_LNKSTA_LBMS 0x4000 /* Link Bandwidth Management Status */ +#define PCI_EXP_LNKSTA_LABS 0x8000 /* Link Autonomous Bandwidth Status */ +#define PCI_EXP_SLTCAP 20 /* Slot Capabilities */ +#define PCI_EXP_SLTCAP_ABP 0x00000001 /* Attention Button Present */ +#define PCI_EXP_SLTCAP_PCP 0x00000002 /* Power Controller Present */ +#define PCI_EXP_SLTCAP_MRLSP 0x00000004 /* MRL Sensor Present */ +#define PCI_EXP_SLTCAP_AIP 0x00000008 /* Attention Indicator Present */ +#define PCI_EXP_SLTCAP_PIP 0x00000010 /* Power Indicator Present */ +#define PCI_EXP_SLTCAP_HPS 0x00000020 /* Hot-Plug Surprise */ +#define PCI_EXP_SLTCAP_HPC 0x00000040 /* Hot-Plug Capable */ +#define PCI_EXP_SLTCAP_SPLV 0x00007f80 /* Slot Power Limit Value */ +#define PCI_EXP_SLTCAP_SPLS 0x00018000 /* Slot Power Limit Scale */ +#define PCI_EXP_SLTCAP_EIP 0x00020000 /* Electromechanical Interlock Present */ +#define PCI_EXP_SLTCAP_NCCS 0x00040000 /* No Command Completed Support */ +#define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */ +#define PCI_EXP_SLTCTL 24 /* Slot Control */ +#define PCI_EXP_SLTCTL_ABPE 0x0001 /* Attention Button Pressed Enable */ +#define PCI_EXP_SLTCTL_PFDE 0x0002 /* Power Fault Detected Enable */ +#define PCI_EXP_SLTCTL_MRLSCE 0x0004 /* MRL Sensor Changed Enable */ +#define PCI_EXP_SLTCTL_PDCE 0x0008 /* Presence Detect Changed Enable */ +#define PCI_EXP_SLTCTL_CCIE 0x0010 /* Command Completed Interrupt Enable */ +#define PCI_EXP_SLTCTL_HPIE 0x0020 /* Hot-Plug Interrupt Enable */ +#define PCI_EXP_SLTCTL_AIC 0x00c0 /* Attention Indicator Control */ +#define PCI_EXP_SLTCTL_PIC 0x0300 /* Power Indicator Control */ +#define PCI_EXP_SLTCTL_PCC 0x0400 /* Power Controller Control */ +#define PCI_EXP_SLTCTL_EIC 0x0800 /* Electromechanical Interlock Control */ +#define PCI_EXP_SLTCTL_DLLSCE 0x1000 /* Data Link Layer State Changed Enable */ +#define PCI_EXP_SLTSTA 26 /* Slot Status */ +#define PCI_EXP_SLTSTA_ABP 0x0001 /* Attention Button Pressed */ +#define PCI_EXP_SLTSTA_PFD 0x0002 /* Power Fault Detected */ +#define PCI_EXP_SLTSTA_MRLSC 0x0004 /* MRL Sensor Changed */ +#define PCI_EXP_SLTSTA_PDC 0x0008 /* Presence Detect Changed */ +#define PCI_EXP_SLTSTA_CC 0x0010 /* Command Completed */ +#define PCI_EXP_SLTSTA_MRLSS 0x0020 /* MRL Sensor State */ +#define PCI_EXP_SLTSTA_PDS 0x0040 /* Presence Detect State */ +#define PCI_EXP_SLTSTA_EIS 0x0080 /* Electromechanical Interlock Status */ +#define PCI_EXP_SLTSTA_DLLSC 0x0100 /* Data Link Layer State Changed */ +#define PCI_EXP_RTCTL 28 /* Root Control */ +#define PCI_EXP_RTCTL_SECEE 0x01 /* System Error on Correctable Error */ +#define PCI_EXP_RTCTL_SENFEE 0x02 /* System Error on Non-Fatal Error */ +#define PCI_EXP_RTCTL_SEFEE 0x04 /* System Error on Fatal Error */ +#define PCI_EXP_RTCTL_PMEIE 0x08 /* PME Interrupt Enable */ +#define PCI_EXP_RTCTL_CRSSVE 0x10 /* CRS Software Visibility Enable */ +#define PCI_EXP_RTCAP 30 /* Root Capabilities */ +#define PCI_EXP_RTSTA 32 /* Root Status */ +#define PCI_EXP_DEVCAP2 36 /* Device Capabilities 2 */ +#define PCI_EXP_DEVCAP2_ARI 0x20 /* Alternative Routing-ID */ +#define PCI_EXP_DEVCTL2 40 /* Device Control 2 */ +#define PCI_EXP_DEVCTL2_ARI 0x20 /* Alternative Routing-ID */ +#define PCI_EXP_LNKCTL2 48 /* Link Control 2 */ +#define PCI_EXP_SLTCTL2 56 /* Slot Control 2 */ + +/* Extended Capabilities (PCI-X 2.0 and Express) */ +#define PCI_EXT_CAP_ID(header) (header & 0x0000ffff) +#define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf) +#define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc) + +#define PCI_EXT_CAP_ID_ERR 1 +#define PCI_EXT_CAP_ID_VC 2 +#define PCI_EXT_CAP_ID_DSN 3 +#define PCI_EXT_CAP_ID_PWR 4 +#define PCI_EXT_CAP_ID_VNDR 11 +#define PCI_EXT_CAP_ID_ACS 13 +#define PCI_EXT_CAP_ID_ARI 14 +#define PCI_EXT_CAP_ID_ATS 15 +#define PCI_EXT_CAP_ID_SRIOV 16 + +/* Advanced Error Reporting */ +#define PCI_ERR_UNCOR_STATUS 4 /* Uncorrectable Error Status */ +#define PCI_ERR_UNC_TRAIN 0x00000001 /* Training */ +#define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */ +#define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */ +#define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */ +#define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */ +#define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */ +#define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */ +#define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */ +#define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */ +#define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */ +#define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */ +#define PCI_ERR_UNCOR_MASK 8 /* Uncorrectable Error Mask */ + /* Same bits as above */ +#define PCI_ERR_UNCOR_SEVER 12 /* Uncorrectable Error Severity */ + /* Same bits as above */ +#define PCI_ERR_COR_STATUS 16 /* Correctable Error Status */ +#define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */ +#define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */ +#define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */ +#define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */ +#define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */ +#define PCI_ERR_COR_MASK 20 /* Correctable Error Mask */ + /* Same bits as above */ +#define PCI_ERR_CAP 24 /* Advanced Error Capabilities */ +#define PCI_ERR_CAP_FEP(x) ((x) & 31) /* First Error Pointer */ +#define PCI_ERR_CAP_ECRC_GENC 0x00000020 /* ECRC Generation Capable */ +#define PCI_ERR_CAP_ECRC_GENE 0x00000040 /* ECRC Generation Enable */ +#define PCI_ERR_CAP_ECRC_CHKC 0x00000080 /* ECRC Check Capable */ +#define PCI_ERR_CAP_ECRC_CHKE 0x00000100 /* ECRC Check Enable */ +#define PCI_ERR_HEADER_LOG 28 /* Header Log Register (16 bytes) */ +#define PCI_ERR_ROOT_COMMAND 44 /* Root Error Command */ +/* Correctable Err Reporting Enable */ +#define PCI_ERR_ROOT_CMD_COR_EN 0x00000001 +/* Non-fatal Err Reporting Enable */ +#define PCI_ERR_ROOT_CMD_NONFATAL_EN 0x00000002 +/* Fatal Err Reporting Enable */ +#define PCI_ERR_ROOT_CMD_FATAL_EN 0x00000004 +#define PCI_ERR_ROOT_STATUS 48 +#define PCI_ERR_ROOT_COR_RCV 0x00000001 /* ERR_COR Received */ +/* Multi ERR_COR Received */ +#define PCI_ERR_ROOT_MULTI_COR_RCV 0x00000002 +/* ERR_FATAL/NONFATAL Recevied */ +#define PCI_ERR_ROOT_UNCOR_RCV 0x00000004 +/* Multi ERR_FATAL/NONFATAL Recevied */ +#define PCI_ERR_ROOT_MULTI_UNCOR_RCV 0x00000008 +#define PCI_ERR_ROOT_FIRST_FATAL 0x00000010 /* First Fatal */ +#define PCI_ERR_ROOT_NONFATAL_RCV 0x00000020 /* Non-Fatal Received */ +#define PCI_ERR_ROOT_FATAL_RCV 0x00000040 /* Fatal Received */ +#define PCI_ERR_ROOT_ERR_SRC 52 /* Error Source Identification */ + +/* Virtual Channel */ +#define PCI_VC_PORT_REG1 4 +#define PCI_VC_PORT_REG2 8 +#define PCI_VC_PORT_CTRL 12 +#define PCI_VC_PORT_STATUS 14 +#define PCI_VC_RES_CAP 16 +#define PCI_VC_RES_CTRL 20 +#define PCI_VC_RES_STATUS 26 + +/* Power Budgeting */ +#define PCI_PWR_DSR 4 /* Data Select Register */ +#define PCI_PWR_DATA 8 /* Data Register */ +#define PCI_PWR_DATA_BASE(x) ((x) & 0xff) /* Base Power */ +#define PCI_PWR_DATA_SCALE(x) (((x) >> 8) & 3) /* Data Scale */ +#define PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7) /* PM Sub State */ +#define PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */ +#define PCI_PWR_DATA_TYPE(x) (((x) >> 15) & 7) /* Type */ +#define PCI_PWR_DATA_RAIL(x) (((x) >> 18) & 7) /* Power Rail */ +#define PCI_PWR_CAP 12 /* Capability */ +#define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */ + +/* + * Hypertransport sub capability types + * + * Unfortunately there are both 3 bit and 5 bit capability types defined + * in the HT spec, catering for that is a little messy. You probably don't + * want to use these directly, just use pci_find_ht_capability() and it + * will do the right thing for you. + */ +#define HT_3BIT_CAP_MASK 0xE0 +#define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */ +#define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */ + +#define HT_5BIT_CAP_MASK 0xF8 +#define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */ +#define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */ +#define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */ +#define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */ +#define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */ +#define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */ +#define HT_MSI_FLAGS 0x02 /* Offset to flags */ +#define HT_MSI_FLAGS_ENABLE 0x1 /* Mapping enable */ +#define HT_MSI_FLAGS_FIXED 0x2 /* Fixed mapping only */ +#define HT_MSI_FIXED_ADDR 0x00000000FEE00000ULL /* Fixed addr */ +#define HT_MSI_ADDR_LO 0x04 /* Offset to low addr bits */ +#define HT_MSI_ADDR_LO_MASK 0xFFF00000 /* Low address bit mask */ +#define HT_MSI_ADDR_HI 0x08 /* Offset to high addr bits */ +#define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */ +#define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */ +#define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */ +#define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 hypertransport configuration */ +#define HT_CAPTYPE_PM 0xE0 /* Hypertransport powermanagement configuration */ + +/* Alternative Routing-ID Interpretation */ +#define PCI_ARI_CAP 0x04 /* ARI Capability Register */ +#define PCI_ARI_CAP_MFVC 0x0001 /* MFVC Function Groups Capability */ +#define PCI_ARI_CAP_ACS 0x0002 /* ACS Function Groups Capability */ +#define PCI_ARI_CAP_NFN(x) (((x) >> 8) & 0xff) /* Next Function Number */ +#define PCI_ARI_CTRL 0x06 /* ARI Control Register */ +#define PCI_ARI_CTRL_MFVC 0x0001 /* MFVC Function Groups Enable */ +#define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */ +#define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */ + +/* Address Translation Service */ +#define PCI_ATS_CAP 0x04 /* ATS Capability Register */ +#define PCI_ATS_CAP_QDEP(x) ((x) & 0x1f) /* Invalidate Queue Depth */ +#define PCI_ATS_MAX_QDEP 32 /* Max Invalidate Queue Depth */ +#define PCI_ATS_CTRL 0x06 /* ATS Control Register */ +#define PCI_ATS_CTRL_ENABLE 0x8000 /* ATS Enable */ +#define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */ +#define PCI_ATS_MIN_STU 12 /* shift of minimum STU block */ + +/* Single Root I/O Virtualization */ +#define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ +#define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ +#define PCI_SRIOV_CAP_INTR(x) ((x) >> 21) /* Interrupt Message Number */ +#define PCI_SRIOV_CTRL 0x08 /* SR-IOV Control */ +#define PCI_SRIOV_CTRL_VFE 0x01 /* VF Enable */ +#define PCI_SRIOV_CTRL_VFM 0x02 /* VF Migration Enable */ +#define PCI_SRIOV_CTRL_INTR 0x04 /* VF Migration Interrupt Enable */ +#define PCI_SRIOV_CTRL_MSE 0x08 /* VF Memory Space Enable */ +#define PCI_SRIOV_CTRL_ARI 0x10 /* ARI Capable Hierarchy */ +#define PCI_SRIOV_STATUS 0x0a /* SR-IOV Status */ +#define PCI_SRIOV_STATUS_VFM 0x01 /* VF Migration Status */ +#define PCI_SRIOV_INITIAL_VF 0x0c /* Initial VFs */ +#define PCI_SRIOV_TOTAL_VF 0x0e /* Total VFs */ +#define PCI_SRIOV_NUM_VF 0x10 /* Number of VFs */ +#define PCI_SRIOV_FUNC_LINK 0x12 /* Function Dependency Link */ +#define PCI_SRIOV_VF_OFFSET 0x14 /* First VF Offset */ +#define PCI_SRIOV_VF_STRIDE 0x16 /* Following VF Stride */ +#define PCI_SRIOV_VF_DID 0x1a /* VF Device ID */ +#define PCI_SRIOV_SUP_PGSIZE 0x1c /* Supported Page Sizes */ +#define PCI_SRIOV_SYS_PGSIZE 0x20 /* System Page Size */ +#define PCI_SRIOV_BAR 0x24 /* VF BAR0 */ +#define PCI_SRIOV_NUM_BARS 6 /* Number of VF BARs */ +#define PCI_SRIOV_VFM 0x3c /* VF Migration State Array Offset*/ +#define PCI_SRIOV_VFM_BIR(x) ((x) & 7) /* State BIR */ +#define PCI_SRIOV_VFM_OFFSET(x) ((x) & ~7) /* State Offset */ +#define PCI_SRIOV_VFM_UA 0x0 /* Inactive.Unavailable */ +#define PCI_SRIOV_VFM_MI 0x1 /* Dormant.MigrateIn */ +#define PCI_SRIOV_VFM_MO 0x2 /* Active.MigrateOut */ +#define PCI_SRIOV_VFM_AV 0x3 /* Active.Available */ + +/* Access Control Service */ +#define PCI_ACS_CAP 0x04 /* ACS Capability Register */ +#define PCI_ACS_SV 0x01 /* Source Validation */ +#define PCI_ACS_TB 0x02 /* Translation Blocking */ +#define PCI_ACS_RR 0x04 /* P2P Request Redirect */ +#define PCI_ACS_CR 0x08 /* P2P Completion Redirect */ +#define PCI_ACS_UF 0x10 /* Upstream Forwarding */ +#define PCI_ACS_EC 0x20 /* P2P Egress Control */ +#define PCI_ACS_DT 0x40 /* Direct Translated P2P */ +#define PCI_ACS_CTRL 0x06 /* ACS Control Register */ +#define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */ + +#endif /* LINUX_PCI_REGS_H */