* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * Send feedback to <dely.l.sy@intel.com>
+ * Send feedback to <kristen.c.accardi@intel.com>
*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/efi.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#ifdef CONFIG_IA64
-#include <asm/iosapic.h>
-#endif
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/actypes.h>
#include "shpchp.h"
-#include "shpchprm.h"
-
-#define PCI_MAX_BUS 0x100
-#define ACPI_STA_DEVICE_PRESENT 0x01
#define METHOD_NAME__SUN "_SUN"
#define METHOD_NAME__HPP "_HPP"
#define METHOD_NAME_OSHP "OSHP"
-#define PHP_RES_BUS 0xA0
-#define PHP_RES_IO 0xA1
-#define PHP_RES_MEM 0xA2
-#define PHP_RES_PMEM 0xA3
-
-#define BRIDGE_TYPE_P2P 0x00
-#define BRIDGE_TYPE_HOST 0x01
-
-/* this should go to drivers/acpi/include/ */
-struct acpi__hpp {
- u8 cache_line_size;
- u8 latency_timer;
- u8 enable_serr;
- u8 enable_perr;
-};
-
-struct acpi_php_slot {
- struct acpi_php_slot *next;
- struct acpi_bridge *bridge;
- acpi_handle handle;
- int seg;
- int bus;
- int dev;
- int fun;
- u32 sun;
- struct pci_resource *mem_head;
- struct pci_resource *p_mem_head;
- struct pci_resource *io_head;
- struct pci_resource *bus_head;
- void *slot_ops; /* _STA, _EJx, etc */
- struct slot *slot;
-}; /* per func */
-
-struct acpi_bridge {
- struct acpi_bridge *parent;
- struct acpi_bridge *next;
- struct acpi_bridge *child;
- acpi_handle handle;
- int seg;
- int pbus; /* pdev->bus->number */
- int pdevice; /* PCI_SLOT(pdev->devfn) */
- int pfunction; /* PCI_DEVFN(pdev->devfn) */
- int bus; /* pdev->subordinate->number */
- struct acpi__hpp *_hpp;
- struct acpi_php_slot *slots;
- struct pci_resource *tmem_head; /* total from crs */
- struct pci_resource *tp_mem_head; /* total from crs */
- struct pci_resource *tio_head; /* total from crs */
- struct pci_resource *tbus_head; /* total from crs */
- struct pci_resource *mem_head; /* available */
- struct pci_resource *p_mem_head; /* available */
- struct pci_resource *io_head; /* available */
- struct pci_resource *bus_head; /* available */
- int scanned;
- int type;
-};
-
-static struct acpi_bridge *acpi_bridges_head;
-
static u8 * acpi_path_name( acpi_handle handle)
{
acpi_status status;
return path_name;
}
-static void acpi_get__hpp ( struct acpi_bridge *ab);
-static void acpi_run_oshp ( struct acpi_bridge *ab);
-
-static int acpi_add_slot_to_php_slots(
- struct acpi_bridge *ab,
- int bus_num,
- acpi_handle handle,
- u32 adr,
- u32 sun
- )
-{
- struct acpi_php_slot *aps;
- static long samesun = -1;
-
- aps = (struct acpi_php_slot *) kmalloc (sizeof(struct acpi_php_slot), GFP_KERNEL);
- if (!aps) {
- err ("acpi_shpchprm: alloc for aps fail\n");
- return -1;
- }
- memset(aps, 0, sizeof(struct acpi_php_slot));
-
- aps->handle = handle;
- aps->bus = bus_num;
- aps->dev = (adr >> 16) & 0xffff;
- aps->fun = adr & 0xffff;
- aps->sun = sun;
-
- aps->next = ab->slots; /* cling to the bridge */
- aps->bridge = ab;
- ab->slots = aps;
-
- ab->scanned += 1;
- if (!ab->_hpp)
- acpi_get__hpp(ab);
-
- acpi_run_oshp(ab);
-
- if (sun != samesun) {
- info("acpi_shpchprm: Slot sun(%x) at s:b:d:f=0x%02x:%02x:%02x:%02x\n", aps->sun, ab->seg,
- aps->bus, aps->dev, aps->fun);
- samesun = sun;
- }
- return 0;
-}
-
-static void acpi_get__hpp ( struct acpi_bridge *ab)
+static acpi_status
+acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
{
acpi_status status;
u8 nui[4];
struct acpi_buffer ret_buf = { 0, NULL};
union acpi_object *ext_obj, *package;
- u8 *path_name = acpi_path_name(ab->handle);
+ u8 *path_name = acpi_path_name(handle);
int i, len = 0;
/* get _hpp */
- status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
+ status = acpi_evaluate_object(handle, METHOD_NAME__HPP, NULL, &ret_buf);
switch (status) {
case AE_BUFFER_OVERFLOW:
ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL);
if (!ret_buf.pointer) {
- err ("acpi_shpchprm:%s alloc for _HPP fail\n", path_name);
- return;
+ err ("%s:%s alloc for _HPP fail\n", __FUNCTION__,
+ path_name);
+ return AE_NO_MEMORY;
}
- status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf);
+ status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
+ NULL, &ret_buf);
if (ACPI_SUCCESS(status))
break;
default:
if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s _HPP fail=0x%x\n", path_name, status);
- return;
+ dbg("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
+ path_name, status);
+ return status;
}
}
ext_obj = (union acpi_object *) ret_buf.pointer;
if (ext_obj->type != ACPI_TYPE_PACKAGE) {
- err ("acpi_shpchprm:%s _HPP obj not a package\n", path_name);
+ err ("%s:%s _HPP obj not a package\n", __FUNCTION__,
+ path_name);
+ status = AE_ERROR;
goto free_and_return;
}
nui[i] = (u8)ext_obj->integer.value;
break;
default:
- err ("acpi_shpchprm:%s _HPP obj type incorrect\n", path_name);
+ err ("%s:%s _HPP obj type incorrect\n", __FUNCTION__,
+ path_name);
+ status = AE_ERROR;
goto free_and_return;
}
}
- ab->_hpp = kmalloc (sizeof (struct acpi__hpp), GFP_KERNEL);
- if (!ab->_hpp) {
- err ("acpi_shpchprm:%s alloc for _HPP failed\n", path_name);
- goto free_and_return;
- }
- memset(ab->_hpp, 0, sizeof(struct acpi__hpp));
+ hpp->cache_line_size = nui[0];
+ hpp->latency_timer = nui[1];
+ hpp->enable_serr = nui[2];
+ hpp->enable_perr = nui[3];
- ab->_hpp->cache_line_size = nui[0];
- ab->_hpp->latency_timer = nui[1];
- ab->_hpp->enable_serr = nui[2];
- ab->_hpp->enable_perr = nui[3];
-
- dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
- dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
- dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
- dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
+ dbg(" _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
+ dbg(" _HPP: latency timer =0x%x\n", hpp->latency_timer);
+ dbg(" _HPP: enable SERR =0x%x\n", hpp->enable_serr);
+ dbg(" _HPP: enable PERR =0x%x\n", hpp->enable_perr);
free_and_return:
kfree(ret_buf.pointer);
-}
-
-static void acpi_run_oshp ( struct acpi_bridge *ab)
-{
- acpi_status status;
- u8 *path_name = acpi_path_name(ab->handle);
-
- /* run OSHP */
- status = acpi_evaluate_object(ab->handle, METHOD_NAME_OSHP, NULL, NULL);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s OSHP fails=0x%x\n", path_name, status);
- } else
- dbg("acpi_pciehprm:%s OSHP passes =0x%x\n", path_name, status);
- return;
-}
-
-static acpi_status acpi_evaluate_crs(
- acpi_handle handle,
- struct acpi_resource **retbuf
- )
-{
- acpi_status status;
- struct acpi_buffer crsbuf;
- u8 *path_name = acpi_path_name(handle);
-
- crsbuf.length = 0;
- crsbuf.pointer = NULL;
-
- status = acpi_get_current_resources (handle, &crsbuf);
-
- switch (status) {
- case AE_BUFFER_OVERFLOW:
- break; /* found */
- case AE_NOT_FOUND:
- dbg("acpi_shpchprm:%s _CRS not found\n", path_name);
- return status;
- default:
- err ("acpi_shpchprm:%s _CRS fail=0x%x\n", path_name, status);
- return status;
- }
-
- crsbuf.pointer = kmalloc (crsbuf.length, GFP_KERNEL);
- if (!crsbuf.pointer) {
- err ("acpi_shpchprm: alloc %ld bytes for %s _CRS fail\n", (ulong)crsbuf.length, path_name);
- return AE_NO_MEMORY;
- }
-
- status = acpi_get_current_resources (handle, &crsbuf);
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm: %s _CRS fail=0x%x.\n", path_name, status);
- kfree(crsbuf.pointer);
- return status;
- }
-
- *retbuf = crsbuf.pointer;
-
- return status;
-}
-
-static void free_pci_resource ( struct pci_resource *aprh)
-{
- struct pci_resource *res, *next;
-
- for (res = aprh; res; res = next) {
- next = res->next;
- kfree(res);
- }
-}
-
-static void print_pci_resource ( struct pci_resource *aprh)
-{
- struct pci_resource *res;
-
- for (res = aprh; res; res = res->next)
- dbg(" base= 0x%x length= 0x%x\n", res->base, res->length);
-}
-
-static void print_slot_resources( struct acpi_php_slot *aps)
-{
- if (aps->bus_head) {
- dbg(" BUS Resources:\n");
- print_pci_resource (aps->bus_head);
- }
-
- if (aps->io_head) {
- dbg(" IO Resources:\n");
- print_pci_resource (aps->io_head);
- }
-
- if (aps->mem_head) {
- dbg(" MEM Resources:\n");
- print_pci_resource (aps->mem_head);
- }
-
- if (aps->p_mem_head) {
- dbg(" PMEM Resources:\n");
- print_pci_resource (aps->p_mem_head);
- }
-}
-
-static void print_pci_resources( struct acpi_bridge *ab)
-{
- if (ab->tbus_head) {
- dbg(" Total BUS Resources:\n");
- print_pci_resource (ab->tbus_head);
- }
- if (ab->bus_head) {
- dbg(" BUS Resources:\n");
- print_pci_resource (ab->bus_head);
- }
-
- if (ab->tio_head) {
- dbg(" Total IO Resources:\n");
- print_pci_resource (ab->tio_head);
- }
- if (ab->io_head) {
- dbg(" IO Resources:\n");
- print_pci_resource (ab->io_head);
- }
-
- if (ab->tmem_head) {
- dbg(" Total MEM Resources:\n");
- print_pci_resource (ab->tmem_head);
- }
- if (ab->mem_head) {
- dbg(" MEM Resources:\n");
- print_pci_resource (ab->mem_head);
- }
-
- if (ab->tp_mem_head) {
- dbg(" Total PMEM Resources:\n");
- print_pci_resource (ab->tp_mem_head);
- }
- if (ab->p_mem_head) {
- dbg(" PMEM Resources:\n");
- print_pci_resource (ab->p_mem_head);
- }
- if (ab->_hpp) {
- dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
- dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
- dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
- dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
- }
-}
-
-static int shpchprm_delete_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
- struct pci_resource *prevnode;
- struct pci_resource *split_node;
- ulong tbase;
-
- shpchp_resource_sort_and_combine(aprh);
-
- for (res = *aprh; res; res = res->next) {
- if (res->base > base)
- continue;
-
- if ((res->base + res->length) < (base + size))
- continue;
-
- if (res->base < base) {
- tbase = base;
-
- if ((res->length - (tbase - res->base)) < size)
- continue;
-
- split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base;
- split_node->length = tbase - res->base;
- res->base = tbase;
- res->length -= split_node->length;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (res->length >= size) {
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base + size;
- split_node->length = res->length - size;
- res->length = size;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (*aprh == res) {
- *aprh = res->next;
- } else {
- prevnode = *aprh;
- while (prevnode->next != res)
- prevnode = prevnode->next;
-
- prevnode->next = res->next;
- }
- res->next = NULL;
- kfree(res);
- break;
- }
-
- return 0;
-}
-
-static int shpchprm_delete_resources(
- struct pci_resource **aprh,
- struct pci_resource *this
- )
-{
- struct pci_resource *res;
-
- for (res = this; res; res = res->next)
- shpchprm_delete_resource(aprh, res->base, res->length);
-
- return 0;
-}
-
-static int shpchprm_add_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
-
- for (res = *aprh; res; res = res->next) {
- if ((res->base + res->length) == base) {
- res->length += size;
- size = 0L;
- break;
- }
- if (res->next == *aprh)
- break;
- }
-
- if (size) {
- res = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!res) {
- err ("acpi_shpchprm: alloc for res fail\n");
- return -ENOMEM;
- }
- memset(res, 0, sizeof (struct pci_resource));
-
- res->base = base;
- res->length = size;
- res->next = *aprh;
- *aprh = res;
- }
-
- return 0;
-}
-
-static int shpchprm_add_resources(
- struct pci_resource **aprh,
- struct pci_resource *this
- )
-{
- struct pci_resource *res;
- int rc = 0;
-
- for (res = this; res && !rc; res = res->next)
- rc = shpchprm_add_resource(aprh, res->base, res->length);
-
- return rc;
-}
-
-static void acpi_parse_io (
- struct acpi_bridge *ab,
- union acpi_resource_data *data
- )
-{
- struct acpi_resource_io *dataio;
- dataio = (struct acpi_resource_io *) data;
-
- dbg("Io Resource\n");
- dbg(" %d bit decode\n", ACPI_DECODE_16 == dataio->io_decode ? 16:10);
- dbg(" Range minimum base: %08X\n", dataio->min_base_address);
- dbg(" Range maximum base: %08X\n", dataio->max_base_address);
- dbg(" Alignment: %08X\n", dataio->alignment);
- dbg(" Range Length: %08X\n", dataio->range_length);
-}
-
-static void acpi_parse_fixed_io (
- struct acpi_bridge *ab,
- union acpi_resource_data *data
- )
-{
- struct acpi_resource_fixed_io *datafio;
- datafio = (struct acpi_resource_fixed_io *) data;
-
- dbg("Fixed Io Resource\n");
- dbg(" Range base address: %08X", datafio->base_address);
- dbg(" Range length: %08X", datafio->range_length);
-}
-
-static void acpi_parse_address16_32 (
- struct acpi_bridge *ab,
- union acpi_resource_data *data,
- acpi_resource_type id
- )
-{
- /*
- * acpi_resource_address16 == acpi_resource_address32
- * acpi_resource_address16 *data16 = (acpi_resource_address16 *) data;
- */
- struct acpi_resource_address32 *data32 = (struct acpi_resource_address32 *) data;
- struct pci_resource **aprh, **tprh;
-
- if (id == ACPI_RSTYPE_ADDRESS16)
- dbg("acpi_shpchprm:16-Bit Address Space Resource\n");
- else
- dbg("acpi_shpchprm:32-Bit Address Space Resource\n");
-
- switch (data32->resource_type) {
- case ACPI_MEMORY_RANGE:
- dbg(" Resource Type: Memory Range\n");
- aprh = &ab->mem_head;
- tprh = &ab->tmem_head;
-
- switch (data32->attribute.memory.cache_attribute) {
- case ACPI_NON_CACHEABLE_MEMORY:
- dbg(" Type Specific: Noncacheable memory\n");
- break;
- case ACPI_CACHABLE_MEMORY:
- dbg(" Type Specific: Cacheable memory\n");
- break;
- case ACPI_WRITE_COMBINING_MEMORY:
- dbg(" Type Specific: Write-combining memory\n");
- break;
- case ACPI_PREFETCHABLE_MEMORY:
- aprh = &ab->p_mem_head;
- dbg(" Type Specific: Prefetchable memory\n");
- break;
- default:
- dbg(" Type Specific: Invalid cache attribute\n");
- break;
- }
-
- dbg(" Type Specific: Read%s\n", ACPI_READ_WRITE_MEMORY == data32->attribute.memory.read_write_attribute ? "/Write":" Only");
- break;
-
- case ACPI_IO_RANGE:
- dbg(" Resource Type: I/O Range\n");
- aprh = &ab->io_head;
- tprh = &ab->tio_head;
-
- switch (data32->attribute.io.range_attribute) {
- case ACPI_NON_ISA_ONLY_RANGES:
- dbg(" Type Specific: Non-ISA Io Addresses\n");
- break;
- case ACPI_ISA_ONLY_RANGES:
- dbg(" Type Specific: ISA Io Addresses\n");
- break;
- case ACPI_ENTIRE_RANGE:
- dbg(" Type Specific: ISA and non-ISA Io Addresses\n");
- break;
- default:
- dbg(" Type Specific: Invalid range attribute\n");
- break;
- }
- break;
-
- case ACPI_BUS_NUMBER_RANGE:
- dbg(" Resource Type: Bus Number Range(fixed)\n");
- /* fixup to be compatible with the rest of php driver */
- data32->min_address_range++;
- data32->address_length--;
- aprh = &ab->bus_head;
- tprh = &ab->tbus_head;
- break;
- default:
- dbg(" Resource Type: Invalid resource type. Exiting.\n");
- return;
- }
-
- dbg(" Resource %s\n", ACPI_CONSUMER == data32->producer_consumer ? "Consumer":"Producer");
- dbg(" %s decode\n", ACPI_SUB_DECODE == data32->decode ? "Subtractive":"Positive");
- dbg(" Min address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->min_address_fixed ? "":"not");
- dbg(" Max address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->max_address_fixed ? "":"not");
- dbg(" Granularity: %08X\n", data32->granularity);
- dbg(" Address range min: %08X\n", data32->min_address_range);
- dbg(" Address range max: %08X\n", data32->max_address_range);
- dbg(" Address translation offset: %08X\n", data32->address_translation_offset);
- dbg(" Address Length: %08X\n", data32->address_length);
-
- if (0xFF != data32->resource_source.index) {
- dbg(" Resource Source Index: %X\n", data32->resource_source.index);
- /* dbg(" Resource Source: %s\n", data32->resource_source.string_ptr); */
- }
-
- shpchprm_add_resource(aprh, data32->min_address_range, data32->address_length);
-}
-
-static acpi_status acpi_parse_crs(
- struct acpi_bridge *ab,
- struct acpi_resource *crsbuf
- )
-{
- acpi_status status = AE_OK;
- struct acpi_resource *resource = crsbuf;
- u8 count = 0;
- u8 done = 0;
-
- while (!done) {
- dbg("acpi_shpchprm: PCI bus 0x%x Resource structure %x.\n", ab->bus, count++);
- switch (resource->id) {
- case ACPI_RSTYPE_IRQ:
- dbg("Irq -------- Resource\n");
- break;
- case ACPI_RSTYPE_DMA:
- dbg("DMA -------- Resource\n");
- break;
- case ACPI_RSTYPE_START_DPF:
- dbg("Start DPF -------- Resource\n");
- break;
- case ACPI_RSTYPE_END_DPF:
- dbg("End DPF -------- Resource\n");
- break;
- case ACPI_RSTYPE_IO:
- acpi_parse_io (ab, &resource->data);
- break;
- case ACPI_RSTYPE_FIXED_IO:
- acpi_parse_fixed_io (ab, &resource->data);
- break;
- case ACPI_RSTYPE_VENDOR:
- dbg("Vendor -------- Resource\n");
- break;
- case ACPI_RSTYPE_END_TAG:
- dbg("End_tag -------- Resource\n");
- done = 1;
- break;
- case ACPI_RSTYPE_MEM24:
- dbg("Mem24 -------- Resource\n");
- break;
- case ACPI_RSTYPE_MEM32:
- dbg("Mem32 -------- Resource\n");
- break;
- case ACPI_RSTYPE_FIXED_MEM32:
- dbg("Fixed Mem32 -------- Resource\n");
- break;
- case ACPI_RSTYPE_ADDRESS16:
- acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS16);
- break;
- case ACPI_RSTYPE_ADDRESS32:
- acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS32);
- break;
- case ACPI_RSTYPE_ADDRESS64:
- info("Address64 -------- Resource unparsed\n");
- break;
- case ACPI_RSTYPE_EXT_IRQ:
- dbg("Ext Irq -------- Resource\n");
- break;
- default:
- dbg("Invalid -------- resource type 0x%x\n", resource->id);
- break;
- }
-
- resource = (struct acpi_resource *) ((char *)resource + resource->length);
- }
-
return status;
}
-static acpi_status acpi_get_crs( struct acpi_bridge *ab)
+static void acpi_run_oshp(acpi_handle handle)
{
- acpi_status status;
- struct acpi_resource *crsbuf;
-
- status = acpi_evaluate_crs(ab->handle, &crsbuf);
- if (ACPI_SUCCESS(status)) {
- status = acpi_parse_crs(ab, crsbuf);
- kfree(crsbuf);
-
- 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 status;
-}
-
-/* find acpi_bridge downword from ab. */
-static struct acpi_bridge *
-find_acpi_bridge_by_bus(
- struct acpi_bridge *ab,
- int seg,
- int bus /* pdev->subordinate->number */
- )
-{
- struct acpi_bridge *lab = NULL;
-
- if (!ab)
- return NULL;
-
- if ((ab->bus == bus) && (ab->seg == seg))
- return ab;
-
- if (ab->child)
- lab = find_acpi_bridge_by_bus(ab->child, seg, bus);
-
- if (!lab)
- if (ab->next)
- lab = find_acpi_bridge_by_bus(ab->next, seg, bus);
-
- return lab;
-}
-
-/*
- * Build a device tree of ACPI PCI Bridges
- */
-static void shpchprm_acpi_register_a_bridge (
- struct acpi_bridge **head,
- struct acpi_bridge *pab, /* parent bridge to which child bridge is added */
- struct acpi_bridge *cab /* child bridge to add */
- )
-{
- struct acpi_bridge *lpab;
- struct acpi_bridge *lcab;
-
- lpab = find_acpi_bridge_by_bus(*head, pab->seg, pab->bus);
- if (!lpab) {
- if (!(pab->type & BRIDGE_TYPE_HOST))
- warn("PCI parent bridge s:b(%x:%x) not in list.\n", pab->seg, pab->bus);
- pab->next = *head;
- *head = pab;
- lpab = pab;
- }
-
- if ((cab->type & BRIDGE_TYPE_HOST) && (pab == cab))
- return;
-
- lcab = find_acpi_bridge_by_bus(*head, cab->seg, cab->bus);
- if (lcab) {
- if ((pab->bus != lcab->parent->bus) || (lcab->bus != cab->bus))
- err("PCI child bridge s:b(%x:%x) in list with diff parent.\n", cab->seg, cab->bus);
- return;
- } else
- lcab = cab;
-
- lcab->parent = lpab;
- lcab->next = lpab->child;
- lpab->child = lcab;
-}
-
-static acpi_status shpchprm_acpi_build_php_slots_callback(
- acpi_handle handle,
- u32 Level,
- void *context,
- void **retval
- )
-{
- ulong bus_num;
- ulong seg_num;
- ulong sun, adr;
- ulong padr = 0;
- acpi_handle phandle = NULL;
- struct acpi_bridge *pab = (struct acpi_bridge *)context;
- struct acpi_bridge *lab;
acpi_status status;
u8 *path_name = acpi_path_name(handle);
- /* get _SUN */
- status = acpi_evaluate_integer(handle, METHOD_NAME__SUN, NULL, &sun);
- switch(status) {
- case AE_NOT_FOUND:
- return AE_OK;
- default:
- if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s _SUN fail=0x%x\n", path_name, status);
- return status;
- }
- }
-
- /* get _ADR. _ADR must exist if _SUN exists */
- 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 status;
- }
-
- dbg("acpi_shpchprm:%s sun=0x%08x adr=0x%08x\n", path_name, (u32)sun, (u32)adr);
-
- status = acpi_get_parent(handle, &phandle);
+ /* run OSHP */
+ status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
if (ACPI_FAILURE(status)) {
- err("acpi_shpchprm:%s get_parent fail=0x%x\n", path_name, status);
- return (status);
- }
-
- bus_num = pab->bus;
- seg_num = pab->seg;
-
- if (pab->bus == bus_num) {
- lab = pab;
+ err("%s:%s OSHP fails=0x%x\n", __FUNCTION__, path_name,
+ status);
} else {
- dbg("WARN: pab is not parent\n");
- lab = find_acpi_bridge_by_bus(pab, seg_num, bus_num);
- if (!lab) {
- dbg("acpi_shpchprm: alloc new P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun);
- lab = (struct acpi_bridge *)kmalloc(sizeof(struct acpi_bridge), GFP_KERNEL);
- if (!lab) {
- err("acpi_shpchprm: alloc for ab fail\n");
- return AE_NO_MEMORY;
- }
- memset(lab, 0, sizeof(struct acpi_bridge));
-
- lab->handle = phandle;
- lab->pbus = pab->bus;
- lab->pdevice = (int)(padr >> 16) & 0xffff;
- lab->pfunction = (int)(padr & 0xffff);
- lab->bus = (int)bus_num;
- lab->scanned = 0;
- lab->type = BRIDGE_TYPE_P2P;
-
- shpchprm_acpi_register_a_bridge (&acpi_bridges_head, pab, lab);
- } else
- dbg("acpi_shpchprm: found P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun);
+ dbg("%s:%s OSHP passes\n", __FUNCTION__, path_name);
}
-
- 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;
}
int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
return 0;
}
-/*
- * Get resources for this ctrl.
- * 1. get total resources from ACPI _CRS or bridge (this ctrl)
- * 2. find used resources of existing adapters
- * 3. subtract used resources from total resources
- */
-int shpchprm_find_available_resources( struct controller *ctrl)
+void get_hp_hw_control_from_firmware(struct pci_dev *dev)
{
- int rc = 0;
- struct acpi_bridge *ab;
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->pci_dev->subordinate->number);
- if (!ab) {
- err("pfar:cannot locate acpi bridge of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number);
- return -1;
- }
- if (no_pci_resources(ab)) {
- rc = get_pci_resources(ctrl, ab);
- if (rc) {
- err("pfar:cannot get pci resources of PCI 0x%x.\n",ctrl->pci_dev->subordinate->number);
- return -1;
- }
- }
-
- rc = bind_pci_resources(ctrl, ab);
- dbg("pfar:pre-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
- shpchprm_dump_ctrl_res(ctrl);
-
- bind_pci_resources_to_slots (ctrl);
-
- dbg("pfar:post-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
- shpchprm_dump_ctrl_res(ctrl);
-
- return rc;
-}
-
-int shpchprm_set_hpp(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type
- )
-{
- struct acpi_bridge *ab;
- struct pci_bus lpci_bus, *pci_bus;
- int rc = 0;
- unsigned int devfn;
- u8 cls= 0x08; /* default cache line size */
- u8 lt = 0x40; /* default latency timer */
- u8 ep = 0;
- u8 es = 0;
-
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
-
- if (ab) {
- if (ab->_hpp) {
- lt = (u8)ab->_hpp->latency_timer;
- cls = (u8)ab->_hpp->cache_line_size;
- ep = (u8)ab->_hpp->enable_perr;
- es = (u8)ab->_hpp->enable_serr;
- } else
- dbg("_hpp: no _hpp for B/D/F=%#x/%#x/%#x. use default value\n", func->bus, func->device, func->function);
- } else
- dbg("_hpp: no acpi bridge for B/D/F = %#x/%#x/%#x. use default value\n", func->bus, func->device, func->function);
-
-
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
- /* set subordinate Latency Timer */
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, lt);
- }
-
- /* set base Latency Timer */
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, lt);
- dbg(" set latency timer =0x%02x: %x\n", lt, rc);
-
- rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, cls);
- dbg(" set cache_line_size=0x%02x: %x\n", cls, rc);
-
- return rc;
+ /*
+ * OSHP is an optional ACPI firmware control method. If present,
+ * we need to run it to inform BIOS that we will control SHPC
+ * hardware from now on.
+ */
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&(dev->dev));
+ if (!handle)
+ return;
+ acpi_run_oshp(handle);
}
-void shpchprm_enable_card(
- struct controller *ctrl,
- struct pci_func *func,
- u8 card_type)
+void get_hp_params_from_firmware(struct pci_dev *dev,
+ struct hotplug_params *hpp)
{
- u16 command, cmd, bcommand, bcmd;
- struct pci_bus lpci_bus, *pci_bus;
- struct acpi_bridge *ab;
- unsigned int devfn;
- int rc;
-
- memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &command);
-
- if (card_type == PCI_HEADER_TYPE_BRIDGE) {
- rc = pci_bus_read_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, &bcommand);
- }
+ acpi_status status = AE_NOT_FOUND;
+ struct pci_dev *pdev = dev;
- cmd = command = command | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE
- | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
- bcmd = bcommand = bcommand | PCI_BRIDGE_CTL_NO_ISA;
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
- if (ab) {
- if (ab->_hpp) {
- if (ab->_hpp->enable_perr) {
- command |= PCI_COMMAND_PARITY;
- bcommand |= PCI_BRIDGE_CTL_PARITY;
- } else {
- command &= ~PCI_COMMAND_PARITY;
- bcommand &= ~PCI_BRIDGE_CTL_PARITY;
- }
- if (ab->_hpp->enable_serr) {
- command |= PCI_COMMAND_SERR;
- bcommand |= PCI_BRIDGE_CTL_SERR;
- } else {
- command &= ~PCI_COMMAND_SERR;
- bcommand &= ~PCI_BRIDGE_CTL_SERR;
- }
- } else
- dbg("no _hpp for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function);
- } else
- dbg("no acpi bridge for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function);
-
- if (command != cmd) {
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
- }
- if ((card_type == PCI_HEADER_TYPE_BRIDGE) && (bcommand != bcmd)) {
- rc = pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, bcommand);
+ /*
+ * _HPP settings apply to all child buses, until another _HPP is
+ * encountered. If we don't find an _HPP for the input pci dev,
+ * look for it in the parent device scope since that would apply to
+ * this pci dev. If we don't find any _HPP, use hardcoded defaults
+ */
+ while (pdev && (ACPI_FAILURE(status))) {
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&(pdev->dev));
+ if (!handle)
+ break;
+ status = acpi_run_hpp(handle, hpp);
+ if (!(pdev->bus->parent))
+ break;
+ /* Check if a parent object supports _HPP */
+ pdev = pdev->bus->parent->self;
}
}
git://git.onelab.eu / linux-2.6.git / blobdiff