-
- acpi_add_slot_to_php_slots(lab, (int)bus_num, handle, (u32)adr, (u32)sun);
- return (status);
-}
-
-static int shpchprm_acpi_build_php_slots(
- struct acpi_bridge *ab,
- u32 depth
- )
-{
- acpi_status status;
- u8 *path_name = acpi_path_name(ab->handle);
-
- /* Walk down this pci bridge to get _SUNs if any behind P2P */
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- ab->handle,
- depth,
- shpchprm_acpi_build_php_slots_callback,
- ab,
- NULL );
- if (ACPI_FAILURE(status)) {
- dbg("acpi_shpchprm:%s walk for _SUN on pci bridge seg:bus(%x:%x) fail=0x%x\n", path_name, ab->seg, ab->bus, status);
- return -1;
- }
-
- return 0;
-}
-
-static void build_a_bridge(
- struct acpi_bridge *pab,
- struct acpi_bridge *ab
- )
-{
- u8 *path_name = acpi_path_name(ab->handle);
-
- shpchprm_acpi_register_a_bridge (&acpi_bridges_head, pab, ab);
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("acpi_shpchprm: Registered PCI HOST Bridge(%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n",
- ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name);
- break;
- case BRIDGE_TYPE_P2P:
- dbg("acpi_shpchprm: Registered PCI P2P Bridge(%02x-%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n",
- ab->pbus, ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name);
- break;
- };
-
- /* build any immediate PHP slots under this pci bridge */
- shpchprm_acpi_build_php_slots(ab, 1);
-}
-
-static struct acpi_bridge * add_p2p_bridge(
- acpi_handle handle,
- struct acpi_bridge *pab, /* parent */
- ulong adr
- )
-{
- struct acpi_bridge *ab;
- struct pci_dev *pdev;
- ulong devnum, funcnum;
- u8 *path_name = acpi_path_name(handle);
-
- ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!ab) {
- err("acpi_shpchprm: alloc for ab fail\n");
- return NULL;
- }
- memset(ab, 0, sizeof(struct acpi_bridge));
-
- devnum = (adr >> 16) & 0xffff;
- funcnum = adr & 0xffff;
-
- pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum));
- if (!pdev || !pdev->subordinate) {
- err("acpi_shpchprm:%s is not a P2P Bridge\n", path_name);
- kfree(ab);
- return NULL;
- }
-
- ab->handle = handle;
- ab->seg = pab->seg;
- ab->pbus = pab->bus; /* or pdev->bus->number */
- ab->pdevice = devnum; /* or PCI_SLOT(pdev->devfn) */
- ab->pfunction = funcnum; /* or PCI_FUNC(pdev->devfn) */
- ab->bus = pdev->subordinate->number;
- ab->scanned = 0;
- ab->type = BRIDGE_TYPE_P2P;
-
- dbg("acpi_shpchprm: P2P(%x-%x) on pci=b:d:f(%x:%x:%x) acpi=b:d:f(%x:%x:%x) [%s]\n",
- pab->bus, ab->bus, pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
- pab->bus, (u32)devnum, (u32)funcnum, path_name);
-
- build_a_bridge(pab, ab);
-
- return ab;
-}
-
-static acpi_status scan_p2p_bridge(
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
-{
- struct acpi_bridge *pab = (struct acpi_bridge *)context;
- struct acpi_bridge *ab;
- acpi_status status;
- ulong adr = 0;
- u8 *path_name = acpi_path_name(handle);
- ulong devnum, funcnum;
- struct pci_dev *pdev;
-
- /* get device, function */
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
- if (ACPI_FAILURE(status)) {
- if (status != AE_NOT_FOUND)
- err("acpi_shpchprm:%s _ADR fail=0x%x\n", path_name, status);
- return AE_OK;
- }
-
- devnum = (adr >> 16) & 0xffff;
- funcnum = adr & 0xffff;
-
- pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum));
- if (!pdev)
- return AE_OK;
- if (!pdev->subordinate)
- return AE_OK;
-
- ab = add_p2p_bridge(handle, pab, adr);
- if (ab) {
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- handle,
- (u32)1,
- scan_p2p_bridge,
- ab,
- NULL);
- if (ACPI_FAILURE(status))
- dbg("acpi_shpchprm:%s find_p2p fail=0x%x\n", path_name, status);
- }
-
- return AE_OK;
-}
-
-static struct acpi_bridge * add_host_bridge(
- acpi_handle handle,
- ulong segnum,
- ulong busnum
- )
-{
- ulong adr = 0;
- acpi_status status;
- struct acpi_bridge *ab;
- u8 *path_name = acpi_path_name(handle);
-
- /* get device, function: host br adr is always 0000 though. */
- status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr);
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s _ADR fail=0x%x\n", path_name, status);
- return NULL;
- }
- dbg("acpi_shpchprm: ROOT PCI seg(0x%x)bus(0x%x)dev(0x%x)func(0x%x) [%s]\n", (u32)segnum, (u32)busnum,
- (u32)(adr >> 16) & 0xffff, (u32)adr & 0xffff, path_name);
-
- ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!ab) {
- err("acpi_shpchprm: alloc for ab fail\n");
- return NULL;
- }
- memset(ab, 0, sizeof(struct acpi_bridge));
-
- ab->handle = handle;
- ab->seg = (int)segnum;
- ab->bus = ab->pbus = (int)busnum;
- ab->pdevice = (int)(adr >> 16) & 0xffff;
- ab->pfunction = (int)(adr & 0xffff);
- ab->scanned = 0;
- ab->type = BRIDGE_TYPE_HOST;
-
- /* get root pci bridge's current resources */
- status = acpi_get_crs(ab);
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s evaluate _CRS fail=0x%x\n", path_name, status);
- kfree(ab);
- return NULL;
- }
- build_a_bridge(ab, ab);
-
- return ab;
-}
-
-static acpi_status acpi_scan_from_root_pci_callback (
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
-{
- ulong segnum = 0;
- ulong busnum = 0;
- acpi_status status;
- struct acpi_bridge *ab;
- u8 *path_name = acpi_path_name(handle);
-
- /* get bus number of this pci root bridge */
- status = acpi_evaluate_integer(handle, METHOD_NAME__SEG, NULL, &segnum);
- if (ACPI_FAILURE(status)) {
- if (status != AE_NOT_FOUND) {
- err("acpi_shpchprm:%s evaluate _SEG fail=0x%x\n", path_name, status);
- return status;
- }
- segnum = 0;
- }
-
- /* get bus number of this pci root bridge */
- status = acpi_evaluate_integer(handle, METHOD_NAME__BBN, NULL, &busnum);
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s evaluate _BBN fail=0x%x\n", path_name, status);
- return (status);
- }
-
- ab = add_host_bridge(handle, segnum, busnum);
- if (ab) {
- status = acpi_walk_namespace ( ACPI_TYPE_DEVICE,
- handle,
- 1,
- scan_p2p_bridge,
- ab,
- NULL);
- if (ACPI_FAILURE(status))
- dbg("acpi_shpchprm:%s find_p2p fail=0x%x\n", path_name, status);
- }
-
- return AE_OK;
-}
-
-static int shpchprm_acpi_scan_pci (void)
-{
- acpi_status status;
-
- /*
- * TBD: traverse LDM device tree with the help of
- * unified ACPI augmented for php device population.
- */
- status = acpi_get_devices ( PCI_ROOT_HID_STRING,
- acpi_scan_from_root_pci_callback,
- NULL,
- NULL );
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:get_device PCI ROOT HID fail=0x%x\n", status);
- return -1;
- }
-
- return 0;
-}
-
-int shpchprm_init(enum php_ctlr_type ctlr_type)
-{
- int rc;
-
- if (ctlr_type != PCI)
- return -ENODEV;
-
- dbg("shpchprm ACPI init <enter>\n");
- acpi_bridges_head = NULL;
-
- /* construct PCI bus:device tree of acpi_handles */
- rc = shpchprm_acpi_scan_pci();
- if (rc)
- return rc;
-
- dbg("shpchprm ACPI init %s\n", (rc)?"fail":"success");
- return rc;
-}
-
-static void free_a_slot(struct acpi_php_slot *aps)
-{
- dbg(" free a php func of slot(0x%02x) on PCI b:d:f=0x%02x:%02x:%02x\n", aps->sun, aps->bus, aps->dev, aps->fun);
-
- free_pci_resource (aps->io_head);
- free_pci_resource (aps->bus_head);
- free_pci_resource (aps->mem_head);
- free_pci_resource (aps->p_mem_head);
-
- kfree(aps);
-}
-
-static void free_a_bridge( struct acpi_bridge *ab)
-{
- struct acpi_php_slot *aps, *next;
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("Free ACPI PCI HOST Bridge(%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n",
- ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction);
- break;
- case BRIDGE_TYPE_P2P:
- dbg("Free ACPI PCI P2P Bridge(%x-%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n",
- ab->pbus, ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction);
- break;
- };
-
- /* free slots first */
- for (aps = ab->slots; aps; aps = next) {
- next = aps->next;
- free_a_slot(aps);
- }
-
- free_pci_resource (ab->io_head);
- free_pci_resource (ab->tio_head);
- free_pci_resource (ab->bus_head);
- free_pci_resource (ab->tbus_head);
- free_pci_resource (ab->mem_head);
- free_pci_resource (ab->tmem_head);
- free_pci_resource (ab->p_mem_head);
- free_pci_resource (ab->tp_mem_head);
-
- kfree(ab);
-}
-
-static void shpchprm_free_bridges ( struct acpi_bridge *ab)
-{
- if (!ab)
- return;
-
- if (ab->child)
- shpchprm_free_bridges (ab->child);
-
- if (ab->next)
- shpchprm_free_bridges (ab->next);
-
- free_a_bridge(ab);
-}
-
-void shpchprm_cleanup(void)
-{
- shpchprm_free_bridges (acpi_bridges_head);
-}
-
-static int get_number_of_slots (
- struct acpi_bridge *ab,
- int selfonly
- )
-{
- struct acpi_php_slot *aps;
- int prev_slot = -1;
- int slot_num = 0;
-
- for ( aps = ab->slots; aps; aps = aps->next)
- if (aps->dev != prev_slot) {
- prev_slot = aps->dev;
- slot_num++;
- }
-
- if (ab->child)
- slot_num += get_number_of_slots (ab->child, 0);
-
- if (selfonly)
- return slot_num;
-
- if (ab->next)
- slot_num += get_number_of_slots (ab->next, 0);
-
- return slot_num;
-}
-
-static int print_acpi_resources (struct acpi_bridge *ab)
-{
- struct acpi_php_slot *aps;
- int i;
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("PCI HOST Bridge (%x) [%s]\n", ab->bus, acpi_path_name(ab->handle));
- break;
- case BRIDGE_TYPE_P2P:
- dbg("PCI P2P Bridge (%x-%x) [%s]\n", ab->pbus, ab->bus, acpi_path_name(ab->handle));
- break;
- };
-
- print_pci_resources (ab);
-
- for ( i = -1, aps = ab->slots; aps; aps = aps->next) {
- if (aps->dev == i)
- continue;
- dbg(" Slot sun(%x) s:b:d:f(%02x:%02x:%02x:%02x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun);
- print_slot_resources(aps);
- i = aps->dev;
- }
-
- if (ab->child)
- print_acpi_resources (ab->child);
-
- if (ab->next)
- print_acpi_resources (ab->next);
-
- return 0;
-}
-
-int shpchprm_print_pirt(void)
-{
- dbg("SHPCHPRM ACPI Slots\n");
- if (acpi_bridges_head)
- print_acpi_resources (acpi_bridges_head);
- return 0;
-}
-
-static struct acpi_php_slot * get_acpi_slot (
- struct acpi_bridge *ab,
- u32 sun
- )
-{
- struct acpi_php_slot *aps = NULL;
-
- for ( aps = ab->slots; aps; aps = aps->next)
- if (aps->sun == sun)
- return aps;
-
- if (!aps && ab->child) {
- aps = (struct acpi_php_slot *)get_acpi_slot (ab->child, sun);
- if (aps)
- return aps;
- }
-
- if (!aps && ab->next) {
- aps = (struct acpi_php_slot *)get_acpi_slot (ab->next, sun);
- if (aps)
- return aps;
- }
-
- return aps;
-
-}
-
-#if 0
-static void * shpchprm_get_slot(struct slot *slot)
-{
- struct acpi_bridge *ab = acpi_bridges_head;
- struct acpi_php_slot *aps = get_acpi_slot (ab, slot->number);
-
- aps->slot = slot;
-
- dbg("Got acpi slot sun(%x): s:b:d:f(%x:%x:%x:%x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun);
-
- return (void *)aps;
-}
-#endif
-
-static void shpchprm_dump_func_res( struct pci_func *fun)
-{
- struct pci_func *func = fun;
-
- if (func->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (func->bus_head);
- }
- if (func->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (func->io_head);
- }
- if (func->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (func->mem_head);
- }
- if (func->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (func->p_mem_head);
- }
-}
-
-static void shpchprm_dump_ctrl_res( struct controller *ctlr)
-{
- struct controller *ctrl = ctlr;
-
- if (ctrl->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (ctrl->bus_head);
- }
- if (ctrl->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (ctrl->io_head);
- }
- if (ctrl->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (ctrl->mem_head);
- }
- if (ctrl->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (ctrl->p_mem_head);
- }
-}
-
-static int shpchprm_get_used_resources (
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- return shpchp_save_used_resources (ctrl, func, !DISABLE_CARD);
-}
-
-static int configure_existing_function(
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- int rc;
-
- /* see how much resources the func has used. */
- rc = shpchprm_get_used_resources (ctrl, func);
-
- if (!rc) {
- /* subtract the resources used by the func from ctrl resources */
- rc = shpchprm_delete_resources (&ctrl->bus_head, func->bus_head);
- rc |= shpchprm_delete_resources (&ctrl->io_head, func->io_head);
- rc |= shpchprm_delete_resources (&ctrl->mem_head, func->mem_head);
- rc |= shpchprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head);
- if (rc)
- warn("aCEF: cannot del used resources\n");
- } else
- err("aCEF: cannot get used resources\n");
-
- return rc;
-}
-
-static int bind_pci_resources_to_slots ( struct controller *ctrl)
-{
- struct pci_func *func, new_func;
- int busn = ctrl->slot_bus;
- int devn, funn;
- u32 vid;
-
- for (devn = 0; devn < 32; devn++) {
- for (funn = 0; funn < 8; funn++) {
- /*
- if (devn == ctrl->device && funn == ctrl->function)
- continue;
- */
- /* find out if this entry is for an occupied slot */
- vid = 0xFFFFFFFF;
- pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid);
-
- if (vid != 0xFFFFFFFF) {
- func = shpchp_slot_find(busn, devn, funn);
- if (!func) {
- memset(&new_func, 0, sizeof(struct pci_func));
- new_func.bus = busn;
- new_func.device = devn;
- new_func.function = funn;
- new_func.is_a_board = 1;
- configure_existing_function(ctrl, &new_func);
- shpchprm_dump_func_res(&new_func);
- } else {
- configure_existing_function(ctrl, func);
- shpchprm_dump_func_res(func);
- }
- dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus);
- }
- }
- }
-
- return 0;
-}
-
-static int bind_pci_resources(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int status = 0;
-
- if (ab->bus_head) {
- dbg("bapr: BUS Resources add on PCI 0x%x\n", ab->bus);
- status = shpchprm_add_resources (&ctrl->bus_head, ab->bus_head);
- if (shpchprm_delete_resources (&ab->bus_head, ctrl->bus_head))
- warn("bapr: cannot sub BUS Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: BUS Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No BUS Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->io_head) {
- dbg("bapr: IO Resources add on PCI 0x%x\n", ab->bus);
- status = shpchprm_add_resources (&ctrl->io_head, ab->io_head);
- if (shpchprm_delete_resources (&ab->io_head, ctrl->io_head))
- warn("bapr: cannot sub IO Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: IO Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No IO Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->mem_head) {
- dbg("bapr: MEM Resources add on PCI 0x%x\n", ab->bus);
- status = shpchprm_add_resources (&ctrl->mem_head, ab->mem_head);
- if (shpchprm_delete_resources (&ab->mem_head, ctrl->mem_head))
- warn("bapr: cannot sub MEM Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: MEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No MEM Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->p_mem_head) {
- dbg("bapr: PMEM Resources add on PCI 0x%x\n", ab->bus);
- status = shpchprm_add_resources (&ctrl->p_mem_head, ab->p_mem_head);
- if (shpchprm_delete_resources (&ab->p_mem_head, ctrl->p_mem_head))
- warn("bapr: cannot sub PMEM Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: PMEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No PMEM Resource on PCI 0x%x.\n", ab->bus);
-
- return status;
-}
-
-static int no_pci_resources( struct acpi_bridge *ab)
-{
- return !(ab->p_mem_head || ab->mem_head || ab->io_head || ab->bus_head);
-}
-
-static int find_pci_bridge_resources (
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
- struct pci_func func;
-
- memset(&func, 0, sizeof(struct pci_func));
-
- func.bus = ab->pbus;
- func.device = ab->pdevice;
- func.function = ab->pfunction;
- func.is_a_board = 1;
-
- /* Get used resources for this PCI bridge */
- rc = shpchp_save_used_resources (ctrl, &func, !DISABLE_CARD);
-
- ab->io_head = func.io_head;
- ab->mem_head = func.mem_head;
- ab->p_mem_head = func.p_mem_head;
- ab->bus_head = func.bus_head;
- if (ab->bus_head)
- shpchprm_delete_resource(&ab->bus_head, ctrl->bus, 1);
-
- return rc;
-}
-
-static int get_pci_resources_from_bridge(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
-
- dbg("grfb: Get Resources for PCI 0x%x from actual PCI bridge 0x%x.\n", ctrl->bus, ab->bus);
-
- rc = find_pci_bridge_resources (ctrl, ab);
-
- shpchp_resource_sort_and_combine(&ab->bus_head);
- shpchp_resource_sort_and_combine(&ab->io_head);
- shpchp_resource_sort_and_combine(&ab->mem_head);
- shpchp_resource_sort_and_combine(&ab->p_mem_head);
-
- shpchprm_add_resources (&ab->tbus_head, ab->bus_head);
- shpchprm_add_resources (&ab->tio_head, ab->io_head);
- shpchprm_add_resources (&ab->tmem_head, ab->mem_head);
- shpchprm_add_resources (&ab->tp_mem_head, ab->p_mem_head);
-
- return rc;
-}
-
-static int get_pci_resources(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
-
- if (no_pci_resources(ab)) {
- dbg("spbr:PCI 0x%x has no resources. Get parent resources.\n", ab->bus);
- rc = get_pci_resources_from_bridge(ctrl, ab);
- }
-
- return rc;