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Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6

Browse source 
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (30 commits)
  [PATCH] PCI Hotplug: Fix recovery path from errors during pcie_init()
  [PATCH] PCI Hotplug: fake NULL pointer dereferences in IBM Hot Plug Controller Driver
  [PATCH] shpchp: Cleanup improper info messages
  [PATCH] shpchp: Remove Unused hpc_evelnt_lock
  [PATCH] shpchp: Cleanup interrupt polling timer
  [PATCH] shpchp: Cleanup SHPC commands
  [PATCH] shpchp: Cleanup interrupt handler
  [PATCH] shpchp: Remove unnecessary hpc_ctlr_handle check
  [PATCH] pciehp: Implement get_address callback
  [PATCH] pciehp: Add missing pci_dev_put
  [PATCH] pciehp: Replace pci_find_slot() with pci_get_slot()
  [PATCH] SGI Hotplug: Incorrect power status
  [PATCH] shpchp: Create shpchpd at controller probe time
  [PATCH] shpchp: Mask Global SERR and Intr at controller release time
  [PATCH] SHPC: Fix SHPC Contoller SERR-INT Register bits access
  [PATCH] SHPC: Fix SHPC Logical Slot Register bits access
  [PATCH] SHPC: Cleanup SHPC Logical Slot Register bits access
  [PATCH] SHPC: Cleanup SHPC Logical Slot Register access
  [PATCH] SHPC: Cleanup SHPC register access
  [PATCH] pciehp: Fix programming hotplug parameters
  ...
This commit is contained in:
Linus Torvalds 2006-06-21 11:23:13 -07:00
commit 789e7dc8ee
15 changed files with 1095 additions and 665 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

257
drivers/pci/hotplug/acpi_pcihp.c
View file

@ -25,6 +25,7 @@
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
@ -33,10 +34,184 @@
#include <acpi/actypes.h>
#include "pci_hotplug.h"
#define MY_NAME "acpi_pcihp"
#define dbg(fmt, arg...) do { if (debug_acpi) printk(KERN_DEBUG "%s: %s: " fmt , MY_NAME , __FUNCTION__ , ## arg); } while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format , MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format , MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format , MY_NAME , ## arg)
#define METHOD_NAME__SUN "_SUN"
#define METHOD_NAME__HPP "_HPP"
#define METHOD_NAME_OSHP "OSHP"
static int debug_acpi;
static acpi_status
decode_type0_hpx_record(union acpi_object *record, struct hotplug_params *hpx)
{
int i;
union acpi_object *fields = record->package.elements;
u32 revision = fields[1].integer.value;
switch (revision) {
case 1:
if (record->package.count != 6)
return AE_ERROR;
for (i = 2; i < 6; i++)
if (fields[i].type != ACPI_TYPE_INTEGER)
return AE_ERROR;
hpx->t0 = &hpx->type0_data;
hpx->t0->revision = revision;
hpx->t0->cache_line_size = fields[2].integer.value;
hpx->t0->latency_timer = fields[3].integer.value;
hpx->t0->enable_serr = fields[4].integer.value;
hpx->t0->enable_perr = fields[5].integer.value;
break;
default:
printk(KERN_WARNING
"%s: Type 0 Revision %d record not supported\n",
__FUNCTION__, revision);
return AE_ERROR;
}
return AE_OK;
}
static acpi_status
decode_type1_hpx_record(union acpi_object *record, struct hotplug_params *hpx)
{
int i;
union acpi_object *fields = record->package.elements;
u32 revision = fields[1].integer.value;
switch (revision) {
case 1:
if (record->package.count != 5)
return AE_ERROR;
for (i = 2; i < 5; i++)
if (fields[i].type != ACPI_TYPE_INTEGER)
return AE_ERROR;
hpx->t1 = &hpx->type1_data;
hpx->t1->revision = revision;
hpx->t1->max_mem_read = fields[2].integer.value;
hpx->t1->avg_max_split = fields[3].integer.value;
hpx->t1->tot_max_split = fields[4].integer.value;
break;
default:
printk(KERN_WARNING
"%s: Type 1 Revision %d record not supported\n",
__FUNCTION__, revision);
return AE_ERROR;
}
return AE_OK;
}
static acpi_status
decode_type2_hpx_record(union acpi_object *record, struct hotplug_params *hpx)
{
int i;
union acpi_object *fields = record->package.elements;
u32 revision = fields[1].integer.value;
switch (revision) {
case 1:
if (record->package.count != 18)
return AE_ERROR;
for (i = 2; i < 18; i++)
if (fields[i].type != ACPI_TYPE_INTEGER)
return AE_ERROR;
hpx->t2 = &hpx->type2_data;
hpx->t2->revision = revision;
hpx->t2->unc_err_mask_and = fields[2].integer.value;
hpx->t2->unc_err_mask_or = fields[3].integer.value;
hpx->t2->unc_err_sever_and = fields[4].integer.value;
hpx->t2->unc_err_sever_or = fields[5].integer.value;
hpx->t2->cor_err_mask_and = fields[6].integer.value;
hpx->t2->cor_err_mask_or = fields[7].integer.value;
hpx->t2->adv_err_cap_and = fields[8].integer.value;
hpx->t2->adv_err_cap_or = fields[9].integer.value;
hpx->t2->pci_exp_devctl_and = fields[10].integer.value;
hpx->t2->pci_exp_devctl_or = fields[11].integer.value;
hpx->t2->pci_exp_lnkctl_and = fields[12].integer.value;
hpx->t2->pci_exp_lnkctl_or = fields[13].integer.value;
hpx->t2->sec_unc_err_sever_and = fields[14].integer.value;
hpx->t2->sec_unc_err_sever_or = fields[15].integer.value;
hpx->t2->sec_unc_err_mask_and = fields[16].integer.value;
hpx->t2->sec_unc_err_mask_or = fields[17].integer.value;
break;
default:
printk(KERN_WARNING
"%s: Type 2 Revision %d record not supported\n",
__FUNCTION__, revision);
return AE_ERROR;
}
return AE_OK;
}
static acpi_status
acpi_run_hpx(acpi_handle handle, struct hotplug_params *hpx)
{
acpi_status status;
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *package, *record, *fields;
u32 type;
int i;
/* Clear the return buffer with zeros */
memset(hpx, 0, sizeof(struct hotplug_params));
status = acpi_evaluate_object(handle, "_HPX", NULL, &buffer);
if (ACPI_FAILURE(status))
return status;
package = (union acpi_object *)buffer.pointer;
if (package->type != ACPI_TYPE_PACKAGE) {
status = AE_ERROR;
goto exit;
}
for (i = 0; i < package->package.count; i++) {
record = &package->package.elements[i];
if (record->type != ACPI_TYPE_PACKAGE) {
status = AE_ERROR;
goto exit;
}
fields = record->package.elements;
if (fields[0].type != ACPI_TYPE_INTEGER ||
fields[1].type != ACPI_TYPE_INTEGER) {
status = AE_ERROR;
goto exit;
}
type = fields[0].integer.value;
switch (type) {
case 0:
status = decode_type0_hpx_record(record, hpx);
if (ACPI_FAILURE(status))
goto exit;
break;
case 1:
status = decode_type1_hpx_record(record, hpx);
if (ACPI_FAILURE(status))
goto exit;
break;
case 2:
status = decode_type2_hpx_record(record, hpx);
if (ACPI_FAILURE(status))
goto exit;
break;
default:
printk(KERN_ERR "%s: Type %d record not supported\n",
__FUNCTION__, type);
status = AE_ERROR;
goto exit;
}
}
exit:
kfree(buffer.pointer);
return status;
}
static acpi_status
acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
@ -50,6 +225,9 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
/* Clear the return buffer with zeros */
memset(hpp, 0, sizeof(struct hotplug_params));
/* get _hpp */
status = acpi_evaluate_object(handle, METHOD_NAME__HPP, NULL, &ret_buf);
switch (status) {
@ -58,7 +236,7 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
if (!ret_buf.pointer) {
printk(KERN_ERR "%s:%s alloc for _HPP fail\n",
__FUNCTION__, (char *)string.pointer);
acpi_os_free(string.pointer);
kfree(string.pointer);
return AE_NO_MEMORY;
}
status = acpi_evaluate_object(handle, METHOD_NAME__HPP,
@ -69,7 +247,7 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
if (ACPI_FAILURE(status)) {
pr_debug("%s:%s _HPP fail=0x%x\n", __FUNCTION__,
(char *)string.pointer, status);
acpi_os_free(string.pointer);
kfree(string.pointer);
return status;
}
}
@ -98,19 +276,20 @@ acpi_run_hpp(acpi_handle handle, struct hotplug_params *hpp)
}
}
hpp->cache_line_size = nui[0];
hpp->latency_timer = nui[1];
hpp->enable_serr = nui[2];
hpp->enable_perr = nui[3];
hpp->t0 = &hpp->type0_data;
hpp->t0->cache_line_size = nui[0];
hpp->t0->latency_timer = nui[1];
hpp->t0->enable_serr = nui[2];
hpp->t0->enable_perr = nui[3];
pr_debug(" _HPP: cache_line_size=0x%x\n", hpp->cache_line_size);
pr_debug(" _HPP: latency timer =0x%x\n", hpp->latency_timer);
pr_debug(" _HPP: enable SERR =0x%x\n", hpp->enable_serr);
pr_debug(" _HPP: enable PERR =0x%x\n", hpp->enable_perr);
pr_debug(" _HPP: cache_line_size=0x%x\n", hpp->t0->cache_line_size);
pr_debug(" _HPP: latency timer =0x%x\n", hpp->t0->latency_timer);
pr_debug(" _HPP: enable SERR =0x%x\n", hpp->t0->enable_serr);
pr_debug(" _HPP: enable PERR =0x%x\n", hpp->t0->enable_perr);
free_and_return:
acpi_os_free(string.pointer);
acpi_os_free(ret_buf.pointer);
kfree(string.pointer);
kfree(ret_buf.pointer);
return status;
}
@ -130,13 +309,17 @@ acpi_status acpi_run_oshp(acpi_handle handle)
/* run OSHP */
status = acpi_evaluate_object(handle, METHOD_NAME_OSHP, NULL, NULL);
if (ACPI_FAILURE(status))
printk(KERN_ERR "%s:%s OSHP fails=0x%x\n", __FUNCTION__,
(char *)string.pointer, status);
if (status != AE_NOT_FOUND)
printk(KERN_ERR "%s:%s OSHP fails=0x%x\n",
__FUNCTION__, (char *)string.pointer, status);
else
dbg("%s:%s OSHP not found\n",
__FUNCTION__, (char *)string.pointer);
else
pr_debug("%s:%s OSHP passes\n", __FUNCTION__,
(char *)string.pointer);
acpi_os_free(string.pointer);
kfree(string.pointer);
return status;
}
EXPORT_SYMBOL_GPL(acpi_run_oshp);
@ -145,14 +328,27 @@ EXPORT_SYMBOL_GPL(acpi_run_oshp);
/* acpi_get_hp_params_from_firmware
*
* @dev - the pci_dev of the newly added device
* @bus - the pci_bus of the bus on which the device is newly added
* @hpp - allocated by the caller
*/
acpi_status acpi_get_hp_params_from_firmware(struct pci_dev *dev,
acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
struct hotplug_params *hpp)
{
acpi_status status = AE_NOT_FOUND;
struct pci_dev *pdev = dev;
acpi_handle handle, phandle;
struct pci_bus *pbus = bus;
struct pci_dev *pdev;
do {
pdev = pbus->self;
if (!pdev) {
handle = acpi_get_pci_rootbridge_handle(
pci_domain_nr(pbus), pbus->number);
break;
}
handle = DEVICE_ACPI_HANDLE(&(pdev->dev));
pbus = pbus->parent;
} while (!handle);
/*
* _HPP settings apply to all child buses, until another _HPP is
@ -160,15 +356,19 @@ acpi_status acpi_get_hp_params_from_firmware(struct pci_dev *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)
while (handle) {
status = acpi_run_hpx(handle, hpp);
if (ACPI_SUCCESS(status))
break;
status = acpi_run_hpp(handle, hpp);
if (!(pdev->bus->parent))
if (ACPI_SUCCESS(status))
break;
/* Check if a parent object supports _HPP */
pdev = pdev->bus->parent->self;
if (acpi_root_bridge(handle))
break;
status = acpi_get_parent(handle, &phandle);
if (ACPI_FAILURE(status))
break;
handle = phandle;
}
return status;
}
@ -192,20 +392,23 @@ int acpi_root_bridge(acpi_handle handle)
if ((info->valid & ACPI_VALID_HID) &&
!strcmp(PCI_ROOT_HID_STRING,
info->hardware_id.value)) {
acpi_os_free(buffer.pointer);
kfree(buffer.pointer);
return 1;
}
if (info->valid & ACPI_VALID_CID) {
for (i=0; i < info->compatibility_id.count; i++) {
if (!strcmp(PCI_ROOT_HID_STRING,
info->compatibility_id.id[i].value)) {
acpi_os_free(buffer.pointer);
kfree(buffer.pointer);
return 1;
}
}
}
acpi_os_free(buffer.pointer);
kfree(buffer.pointer);
}
return 0;
}
EXPORT_SYMBOL_GPL(acpi_root_bridge);
module_param(debug_acpi, bool, 0644);
MODULE_PARM_DESC(debug_acpi, "Debugging mode for ACPI enabled or not");

5
drivers/pci/hotplug/acpiphp.h
View file

@ -75,6 +75,10 @@ struct acpiphp_bridge {
struct list_head list;
acpi_handle handle;
struct acpiphp_slot *slots;
/* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
struct acpiphp_func *func;
int type;
int nr_slots;
@ -122,6 +126,7 @@ struct acpiphp_slot {
*/
struct acpiphp_func {
struct acpiphp_slot *slot; /* parent */
struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */
struct list_head sibling;
struct pci_dev *pci_dev;

242
drivers/pci/hotplug/acpiphp_glue.c
View file

@ -286,13 +286,19 @@ static void decode_hpp(struct acpiphp_bridge *bridge)
{
acpi_status status;
status = acpi_get_hp_params_from_firmware(bridge->pci_dev, &bridge->hpp);
if (ACPI_FAILURE(status)) {
status = acpi_get_hp_params_from_firmware(bridge->pci_bus, &bridge->hpp);
if (ACPI_FAILURE(status) ||
!bridge->hpp.t0 || (bridge->hpp.t0->revision > 1)) {
/* use default numbers */
bridge->hpp.cache_line_size = 0x10;
bridge->hpp.latency_timer = 0x40;
bridge->hpp.enable_serr = 0;
bridge->hpp.enable_perr = 0;
printk(KERN_WARNING
"%s: Could not get hotplug parameters. Use defaults\n",
__FUNCTION__);
bridge->hpp.t0 = &bridge->hpp.type0_data;
bridge->hpp.t0->revision = 0;
bridge->hpp.t0->cache_line_size = 0x10;
bridge->hpp.t0->latency_timer = 0x40;
bridge->hpp.t0->enable_serr = 0;
bridge->hpp.t0->enable_perr = 0;
}
}
@ -319,6 +325,13 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
/* install notify handler */
if (bridge->type != BRIDGE_TYPE_HOST) {
if ((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func) {
status = acpi_remove_notify_handler(bridge->func->handle,
ACPI_SYSTEM_NOTIFY,
handle_hotplug_event_func);
if (ACPI_FAILURE(status))
err("failed to remove notify handler\n");
}
status = acpi_install_notify_handler(bridge->handle,
ACPI_SYSTEM_NOTIFY,
handle_hotplug_event_bridge,
@ -331,6 +344,66 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
}
/* find acpiphp_func from acpiphp_bridge */
static struct acpiphp_func *acpiphp_bridge_handle_to_function(acpi_handle handle)
{
struct list_head *node, *l;
struct acpiphp_bridge *bridge;
struct acpiphp_slot *slot;
struct acpiphp_func *func;
list_for_each(node, &bridge_list) {
bridge = list_entry(node, struct acpiphp_bridge, list);
for (slot = bridge->slots; slot; slot = slot->next) {
list_for_each(l, &slot->funcs) {
func = list_entry(l, struct acpiphp_func,
sibling);
if (func->handle == handle)
return func;
}
}
}
return NULL;
}
static inline void config_p2p_bridge_flags(struct acpiphp_bridge *bridge)
{
acpi_handle dummy_handle;
if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
"_STA", &dummy_handle)))
bridge->flags |= BRIDGE_HAS_STA;
if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
"_EJ0", &dummy_handle)))
bridge->flags |= BRIDGE_HAS_EJ0;
if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
"_PS0", &dummy_handle)))
bridge->flags |= BRIDGE_HAS_PS0;
if (ACPI_SUCCESS(acpi_get_handle(bridge->handle,
"_PS3", &dummy_handle)))
bridge->flags |= BRIDGE_HAS_PS3;
/* is this ejectable p2p bridge? */
if (bridge->flags & BRIDGE_HAS_EJ0) {
struct acpiphp_func *func;
dbg("found ejectable p2p bridge\n");
/* make link between PCI bridge and PCI function */
func = acpiphp_bridge_handle_to_function(bridge->handle);
if (!func)
return;
bridge->func = func;
func->bridge = bridge;
}
}
/* allocate and initialize host bridge data structure */
static void add_host_bridge(acpi_handle *handle, struct pci_bus *pci_bus)
{
@ -364,6 +437,7 @@ static void add_p2p_bridge(acpi_handle *handle, struct pci_dev *pci_dev)
bridge->type = BRIDGE_TYPE_P2P;
bridge->handle = handle;
config_p2p_bridge_flags(bridge);
bridge->pci_dev = pci_dev_get(pci_dev);
bridge->pci_bus = pci_dev->subordinate;
@ -423,7 +497,7 @@ find_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
find_p2p_bridge, dev->subordinate, NULL);
if (ACPI_FAILURE(status))
warn("find_p2p_bridge faied (error code = 0x%x)\n", status);
warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
out:
pci_dev_put(dev);
@ -478,7 +552,6 @@ static int add_bridge(acpi_handle handle)
if (detect_ejectable_slots(handle) > 0) {
dbg("found PCI host-bus bridge with hot-pluggable slots\n");
add_host_bridge(handle, pci_bus);
return 0;
}
/* search P2P bridges under this host bridge */
@ -486,7 +559,7 @@ static int add_bridge(acpi_handle handle)
find_p2p_bridge, pci_bus, NULL);
if (ACPI_FAILURE(status))
warn("find_p2p_bridge faied (error code = 0x%x)\n",status);
warn("find_p2p_bridge failed (error code = 0x%x)\n", status);
return 0;
}
@ -516,6 +589,16 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
if (ACPI_FAILURE(status))
err("failed to remove notify handler\n");
if ((bridge->type != BRIDGE_TYPE_HOST) &&
((bridge->flags & BRIDGE_HAS_EJ0) && bridge->func)) {
status = acpi_install_notify_handler(bridge->func->handle,
ACPI_SYSTEM_NOTIFY,
handle_hotplug_event_func,
bridge->func);
if (ACPI_FAILURE(status))
err("failed to install interrupt notify handler\n");
}
slot = bridge->slots;
while (slot) {
struct acpiphp_slot *next = slot->next;
@ -549,6 +632,11 @@ cleanup_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
{
struct acpiphp_bridge *bridge;
/* cleanup p2p bridges under this P2P bridge
in a depth-first manner */
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
cleanup_p2p_bridge, NULL, NULL);
if (!(bridge = acpiphp_handle_to_bridge(handle)))
return AE_OK;
cleanup_bridge(bridge);
@ -559,15 +647,14 @@ static void remove_bridge(acpi_handle handle)
{
struct acpiphp_bridge *bridge;
/* cleanup p2p bridges under this host bridge
in a depth-first manner */
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
(u32)1, cleanup_p2p_bridge, NULL, NULL);
bridge = acpiphp_handle_to_bridge(handle);
if (bridge) {
if (bridge)
cleanup_bridge(bridge);
} else {
/* clean-up p2p bridges under this host bridge */
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
ACPI_UINT32_MAX, cleanup_p2p_bridge,
NULL, NULL);
}
}
static struct pci_dev * get_apic_pci_info(acpi_handle handle)
@ -634,7 +721,7 @@ static int get_gsi_base(acpi_handle handle, u32 *gsi_base)
break;
}
out:
acpi_os_free(buffer.pointer);
kfree(buffer.pointer);
return result;
}
@ -797,36 +884,6 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
}
/**
* get_func - get a pointer to acpiphp_func given a slot, device
* @slot: slot to search
* @dev: pci_dev struct to match.
*
* This function will increase the reference count of pci_dev,
* so callers should call pci_dev_put when complete.
*
*/
static struct acpiphp_func *
get_func(struct acpiphp_slot *slot, struct pci_dev *dev)
{
struct acpiphp_func *func = NULL;
struct pci_bus *bus = slot->bridge->pci_bus;
struct pci_dev *pdev;
list_for_each_entry(func, &slot->funcs, sibling) {
pdev = pci_get_slot(bus, PCI_DEVFN(slot->device,
func->function));
if (pdev) {
if (pdev == dev)
break;
pci_dev_put(pdev);
}
}
return func;
}
/**
* acpiphp_bus_add - add a new bus to acpi subsystem
* @func: acpiphp_func of the bridge
@ -872,6 +929,28 @@ acpiphp_bus_add_out:
}
/**
* acpiphp_bus_trim - trim a bus from acpi subsystem
* @handle: handle to acpi namespace
*
*/
int acpiphp_bus_trim(acpi_handle handle)
{
struct acpi_device *device;
int retval;
retval = acpi_bus_get_device(handle, &device);
if (retval) {
dbg("acpi_device not found\n");
return retval;
}
retval = acpi_bus_trim(device, 1);
if (retval)
err("cannot remove from acpi list\n");
return retval;
}
/**
* enable_device - enable, configure a slot
@ -889,6 +968,7 @@ static int enable_device(struct acpiphp_slot *slot)
struct acpiphp_func *func;
int retval = 0;
int num, max, pass;
acpi_status status;
if (slot->flags & SLOT_ENABLED)
goto err_exit;
@ -918,19 +998,17 @@ static int enable_device(struct acpiphp_slot *slot)
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
max = pci_scan_bridge(bus, dev, max, pass);
if (pass && dev->subordinate) {
if (pass && dev->subordinate)
pci_bus_size_bridges(dev->subordinate);
func = get_func(slot, dev);
if (func) {
acpiphp_bus_add(func);
/* side effect of get_func */
pci_dev_put(dev);
}
}
}
}
}
list_for_each (l, &slot->funcs) {
func = list_entry(l, struct acpiphp_func, sibling);
acpiphp_bus_add(func);
}
pci_bus_assign_resources(bus);
acpiphp_sanitize_bus(bus);
pci_enable_bridges(bus);
@ -943,6 +1021,17 @@ static int enable_device(struct acpiphp_slot *slot)
func = list_entry(l, struct acpiphp_func, sibling);
func->pci_dev = pci_get_slot(bus, PCI_DEVFN(slot->device,
func->function));
if (!func->pci_dev)
continue;
if (func->pci_dev->hdr_type != PCI_HEADER_TYPE_BRIDGE &&
func->pci_dev->hdr_type != PCI_HEADER_TYPE_CARDBUS)
continue;
status = find_p2p_bridge(func->handle, (u32)1, bus, NULL);
if (ACPI_FAILURE(status))
warn("find_p2p_bridge failed (error code = 0x%x)\n",
status);
}
slot->flags |= SLOT_ENABLED;
@ -967,6 +1056,18 @@ static int disable_device(struct acpiphp_slot *slot)
list_for_each (l, &slot->funcs) {
func = list_entry(l, struct acpiphp_func, sibling);
if (func->bridge) {
/* cleanup p2p bridges under this P2P bridge */
cleanup_p2p_bridge(func->bridge->handle,
(u32)1, NULL, NULL);
func->bridge = NULL;
}
acpiphp_bus_trim(func->handle);
/* try to remove anyway.
* acpiphp_bus_add might have been failed */
if (!func->pci_dev)
continue;
@ -1111,16 +1212,17 @@ static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
bridge->hpp.cache_line_size);
bridge->hpp.t0->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER,
bridge->hpp.latency_timer);
bridge->hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
if (bridge->hpp.enable_serr)
if (bridge->hpp.t0->enable_serr)
pci_cmd |= PCI_COMMAND_SERR;
else
pci_cmd &= ~PCI_COMMAND_SERR;
if (bridge->hpp.enable_perr)
if (bridge->hpp.t0->enable_perr)
pci_cmd |= PCI_COMMAND_PARITY;
else
pci_cmd &= ~PCI_COMMAND_PARITY;
@ -1129,13 +1231,13 @@ static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
/* Program bridge control value and child devices */
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
bridge->hpp.latency_timer);
bridge->hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
if (bridge->hpp.enable_serr)
if (bridge->hpp.t0->enable_serr)
pci_bctl |= PCI_BRIDGE_CTL_SERR;
else
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
if (bridge->hpp.enable_perr)
if (bridge->hpp.t0->enable_perr)
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
else
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
@ -1155,6 +1257,7 @@ static void acpiphp_set_hpp_values(acpi_handle handle, struct pci_bus *bus)
memset(&bridge, 0, sizeof(bridge));
bridge.handle = handle;
bridge.pci_bus = bus;
bridge.pci_dev = bus->self;
decode_hpp(&bridge);
list_for_each_entry(dev, &bus->devices, bus_list)
@ -1297,6 +1400,13 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type, void *cont
case ACPI_NOTIFY_EJECT_REQUEST:
/* request device eject */
dbg("%s: Device eject notify on %s\n", __FUNCTION__, objname);
if ((bridge->type != BRIDGE_TYPE_HOST) &&
(bridge->flags & BRIDGE_HAS_EJ0)) {
struct acpiphp_slot *slot;
slot = bridge->func->slot;
if (!acpiphp_disable_slot(slot))
acpiphp_eject_slot(slot);
}
break;
case ACPI_NOTIFY_FREQUENCY_MISMATCH:
@ -1490,9 +1600,15 @@ int acpiphp_enable_slot(struct acpiphp_slot *slot)
if (retval)
goto err_exit;
if (get_slot_status(slot) == ACPI_STA_ALL)
if (get_slot_status(slot) == ACPI_STA_ALL) {
/* configure all functions */
retval = enable_device(slot);
if (retval)
power_off_slot(slot);
} else {
dbg("%s: Slot status is not ACPI_STA_ALL\n", __FUNCTION__);
power_off_slot(slot);
}
err_exit:
mutex_unlock(&slot->crit_sect);

12
drivers/pci/hotplug/ibmphp_core.c
View file

@ -285,7 +285,7 @@ static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value)
(ulong) hotplug_slot, (ulong) value);
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
memcpy(&myslot, pslot, sizeof(struct slot));
@ -315,7 +315,7 @@ static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value)
debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
(ulong) hotplug_slot, (ulong) value);
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
memcpy(&myslot, pslot, sizeof(struct slot));
@ -342,7 +342,7 @@ static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value)
debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
(ulong) hotplug_slot, (ulong) value);
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
memcpy(&myslot, pslot, sizeof(struct slot));
@ -369,7 +369,7 @@ static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value)
debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
(ulong) hotplug_slot, (ulong) value);
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
memcpy(&myslot, pslot, sizeof(struct slot));
@ -401,7 +401,7 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
rc = 0;
@ -441,7 +441,7 @@ static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
ibmphp_lock_operations();
if (hotplug_slot && value) {
if (hotplug_slot) {
pslot = hotplug_slot->private;
if (pslot) {
rc = get_cur_bus_info(&pslot);

50
drivers/pci/hotplug/pci_hotplug.h
View file

@ -176,11 +176,51 @@ extern int pci_hp_change_slot_info (struct hotplug_slot *slot,
struct hotplug_slot_info *info);
extern struct subsystem pci_hotplug_slots_subsys;
/* PCI Setting Record (Type 0) */
struct hpp_type0 {
u32 revision;
u8 cache_line_size;
u8 latency_timer;
u8 enable_serr;
u8 enable_perr;
};
/* PCI-X Setting Record (Type 1) */
struct hpp_type1 {
u32 revision;
u8 max_mem_read;
u8 avg_max_split;
u16 tot_max_split;
};
/* PCI Express Setting Record (Type 2) */
struct hpp_type2 {
u32 revision;
u32 unc_err_mask_and;
u32 unc_err_mask_or;
u32 unc_err_sever_and;
u32 unc_err_sever_or;
u32 cor_err_mask_and;
u32 cor_err_mask_or;
u32 adv_err_cap_and;
u32 adv_err_cap_or;
u16 pci_exp_devctl_and;
u16 pci_exp_devctl_or;
u16 pci_exp_lnkctl_and;
u16 pci_exp_lnkctl_or;
u32 sec_unc_err_sever_and;
u32 sec_unc_err_sever_or;
u32 sec_unc_err_mask_and;
u32 sec_unc_err_mask_or;
};
struct hotplug_params {
u8 cache_line_size;
u8 latency_timer;
u8 enable_serr;
u8 enable_perr;
struct hpp_type0 *t0; /* Type0: NULL if not available */
struct hpp_type1 *t1; /* Type1: NULL if not available */
struct hpp_type2 *t2; /* Type2: NULL if not available */
struct hpp_type0 type0_data;
struct hpp_type1 type1_data;
struct hpp_type2 type2_data;
};
#ifdef CONFIG_ACPI
@ -188,7 +228,7 @@ struct hotplug_params {
#include <acpi/acpi_bus.h>
#include <acpi/actypes.h>
extern acpi_status acpi_run_oshp(acpi_handle handle);
extern acpi_status acpi_get_hp_params_from_firmware(struct pci_dev *dev,
extern acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
struct hotplug_params *hpp);
int acpi_root_bridge(acpi_handle handle);
#endif

2
drivers/pci/hotplug/pciehp.h
View file

@ -284,7 +284,7 @@ struct hpc_ops {
static inline int pciehp_get_hp_params_from_firmware(struct pci_dev *dev,
struct hotplug_params *hpp)
{
if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev, hpp)))
if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev->bus, hpp)))
return -ENODEV;
return 0;
}

14
drivers/pci/hotplug/pciehp_core.c
View file

@ -69,6 +69,7 @@ static int get_power_status (struct hotplug_slot *slot, u8 *value);
static int get_attention_status (struct hotplug_slot *slot, u8 *value);
static int get_latch_status (struct hotplug_slot *slot, u8 *value);
static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
static int get_address (struct hotplug_slot *slot, u32 *value);
static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
@ -81,6 +82,7 @@ static struct hotplug_slot_ops pciehp_hotplug_slot_ops = {
.get_attention_status = get_attention_status,
.get_latch_status = get_latch_status,
.get_adapter_status = get_adapter_status,
.get_address = get_address,
.get_max_bus_speed = get_max_bus_speed,
.get_cur_bus_speed = get_cur_bus_speed,
};
@ -331,6 +333,18 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
return 0;
}
static int get_address(struct hotplug_slot *hotplug_slot, u32 *value)
{
struct slot *slot = hotplug_slot->private;
struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
*value = (pci_domain_nr(bus) << 16) | (slot->bus << 8) | slot->device;
return 0;
}
static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
struct slot *slot = hotplug_slot->private;

32
drivers/pci/hotplug/pciehp_hpc.c
View file

@ -1288,7 +1288,7 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
if (ACPI_SUCCESS(status)) {
dbg("Gained control for hotplug HW for pci %s (%s)\n",
pci_name(dev), (char *)string.pointer);
acpi_os_free(string.pointer);
kfree(string.pointer);
return 0;
}
if (acpi_root_bridge(handle))
@ -1302,7 +1302,7 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
err("Cannot get control of hotplug hardware for pci %s\n",
pci_name(dev));
acpi_os_free(string.pointer);
kfree(string.pointer);
return -1;
}
#endif
@ -1404,9 +1404,6 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n", pdev->vendor, pdev->device,
pdev->subsystem_vendor, pdev->subsystem_device);
if (pci_enable_device(pdev))
goto abort_free_ctlr;
mutex_init(&ctrl->crit_sect);
/* setup wait queue */
init_waitqueue_head(&ctrl->queue);
@ -1474,7 +1471,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
rc = hp_register_read_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
if (rc) {
err("%s : hp_register_read_word SLOT_CTRL failed\n", __FUNCTION__);
goto abort_free_ctlr;
goto abort_free_irq;
}
intr_enable = intr_enable | PRSN_DETECT_ENABLE;
@ -1500,19 +1497,19 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
rc = hp_register_write_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
if (rc) {
err("%s : hp_register_write_word SLOT_CTRL failed\n", __FUNCTION__);
goto abort_free_ctlr;
goto abort_free_irq;
}
rc = hp_register_read_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), slot_status);
if (rc) {
err("%s : hp_register_read_word SLOT_STATUS failed\n", __FUNCTION__);
goto abort_free_ctlr;
goto abort_disable_intr;
}
temp_word = 0x1F; /* Clear all events */
rc = hp_register_write_word(php_ctlr->pci_dev, SLOT_STATUS(ctrl->cap_base), temp_word);
if (rc) {
err("%s : hp_register_write_word SLOT_STATUS failed\n", __FUNCTION__);
goto abort_free_ctlr;
goto abort_disable_intr;
}
if (pciehp_force) {
@ -1521,7 +1518,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
} else {
rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev);
if (rc)
goto abort_free_ctlr;
goto abort_disable_intr;
}
/* Add this HPC instance into the HPC list */
@ -1548,6 +1545,21 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
return 0;
/* We end up here for the many possible ways to fail this API. */
abort_disable_intr:
rc = hp_register_read_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
if (!rc) {
temp_word &= ~(intr_enable | HP_INTR_ENABLE);
rc = hp_register_write_word(pdev, SLOT_CTRL(ctrl->cap_base), temp_word);
}
if (rc)
err("%s : disabling interrupts failed\n", __FUNCTION__);
abort_free_irq:
if (pciehp_poll_mode)
del_timer_sync(&php_ctlr->int_poll_timer);
else
free_irq(php_ctlr->irq, ctrl);
abort_free_ctlr:
pcie_cap_base = saved_cap_base;
kfree(php_ctlr);

152
drivers/pci/hotplug/pciehp_pci.c
View file

@ -34,6 +34,144 @@
#include "../pci.h"
#include "pciehp.h"
static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
{
u16 pci_cmd, pci_bctl;
if (hpp->revision > 1) {
printk(KERN_WARNING "%s: Rev.%d type0 record not supported\n",
__FUNCTION__, hpp->revision);
return;
}
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, hpp->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp->latency_timer);
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
if (hpp->enable_serr)
pci_cmd |= PCI_COMMAND_SERR;
else
pci_cmd &= ~PCI_COMMAND_SERR;
if (hpp->enable_perr)
pci_cmd |= PCI_COMMAND_PARITY;
else
pci_cmd &= ~PCI_COMMAND_PARITY;
pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
/* Program bridge control value */
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
hpp->latency_timer);
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
if (hpp->enable_serr)
pci_bctl |= PCI_BRIDGE_CTL_SERR;
else
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
if (hpp->enable_perr)
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
else
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
pci_write_config_word(dev, PCI_BRIDGE_CONTROL, pci_bctl);
}
}
static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
{
int pos;
u16 reg16;
u32 reg32;
if (hpp->revision > 1) {
printk(KERN_WARNING "%s: Rev.%d type2 record not supported\n",
__FUNCTION__, hpp->revision);
return;
}
/* Find PCI Express capability */
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (!pos)
return;
/* Initialize Device Control Register */
pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
reg16 = (reg16 & hpp->pci_exp_devctl_and) | hpp->pci_exp_devctl_or;
pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, reg16);
/* Initialize Link Control Register */
if (dev->subordinate) {
pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &reg16);
reg16 = (reg16 & hpp->pci_exp_lnkctl_and)
| hpp->pci_exp_lnkctl_or;
pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, reg16);
}
/* Find Advanced Error Reporting Enhanced Capability */
pos = 256;
do {
pci_read_config_dword(dev, pos, &reg32);
if (PCI_EXT_CAP_ID(reg32) == PCI_EXT_CAP_ID_ERR)
break;
} while ((pos = PCI_EXT_CAP_NEXT(reg32)));
if (!pos)
return;
/* Initialize Uncorrectable Error Mask Register */
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, &reg32);
reg32 = (reg32 & hpp->unc_err_mask_and) | hpp->unc_err_mask_or;
pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, reg32);
/* Initialize Uncorrectable Error Severity Register */
pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &reg32);
reg32 = (reg32 & hpp->unc_err_sever_and) | hpp->unc_err_sever_or;
pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, reg32);
/* Initialize Correctable Error Mask Register */
pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &reg32);
reg32 = (reg32 & hpp->cor_err_mask_and) | hpp->cor_err_mask_or;
pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg32);
/* Initialize Advanced Error Capabilities and Control Register */
pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
reg32 = (reg32 & hpp->adv_err_cap_and) | hpp->adv_err_cap_or;
pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
/*
* FIXME: The following two registers are not supported yet.
*
* o Secondary Uncorrectable Error Severity Register
* o Secondary Uncorrectable Error Mask Register
*/
}
static void program_fw_provided_values(struct pci_dev *dev)
{
struct pci_dev *cdev;
struct hotplug_params hpp;
/* Program hpp values for this device */
if (!(dev->hdr_type == PCI_HEADER_TYPE_NORMAL ||
(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
if (pciehp_get_hp_params_from_firmware(dev, &hpp)) {
printk(KERN_WARNING "%s: Could not get hotplug parameters\n",
__FUNCTION__);
return;
}
if (hpp.t2)
program_hpp_type2(dev, hpp.t2);
if (hpp.t0)
program_hpp_type0(dev, hpp.t0);
/* Program child devices */
if (dev->subordinate) {
list_for_each_entry(cdev, &dev->subordinate->devices,
bus_list)
program_fw_provided_values(cdev);
}
}
static int pciehp_add_bridge(struct pci_dev *dev)
{
struct pci_bus *parent = dev->bus;
@ -66,10 +204,11 @@ int pciehp_configure_device(struct slot *p_slot)
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
int num, fn;
dev = pci_find_slot(p_slot->bus, PCI_DEVFN(p_slot->device, 0));
dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (dev) {
err("Device %s already exists at %x:%x, cannot hot-add\n",
pci_name(dev), p_slot->bus, p_slot->device);
pci_dev_put(dev);
return -EINVAL;
}
@ -86,14 +225,15 @@ int pciehp_configure_device(struct slot *p_slot)
if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
err("Cannot hot-add display device %s\n",
pci_name(dev));
pci_dev_put(dev);
continue;
}
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
pciehp_add_bridge(dev);
}
/* TBD: program firmware provided _HPP values */
/* program_fw_provided_values(dev); */
program_fw_provided_values(dev);
pci_dev_put(dev);
}
pci_bus_assign_resources(parent);
@ -106,18 +246,20 @@ int pciehp_unconfigure_device(struct slot *p_slot)
int rc = 0;
int j;
u8 bctl = 0;
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
dbg("%s: bus/dev = %x/%x\n", __FUNCTION__, p_slot->bus,
p_slot->device);
for (j=0; j<8 ; j++) {
struct pci_dev* temp = pci_find_slot(p_slot->bus,
struct pci_dev* temp = pci_get_slot(parent,
(p_slot->device << 3) | j);
if (!temp)
continue;
if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
err("Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
continue;
}
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
@ -125,10 +267,12 @@ int pciehp_unconfigure_device(struct slot *p_slot)
if (bctl & PCI_BRIDGE_CTL_VGA) {
err("Cannot remove display device %s\n",
pci_name(temp));
pci_dev_put(temp);
continue;
}
}
pci_remove_bus_device(temp);
pci_dev_put(temp);
}
/*
* Some PCI Express root ports require fixup after hot-plug operation.

46
drivers/pci/hotplug/sgi_hotplug.c
View file

@ -18,11 +18,13 @@
#include <linux/mutex.h>
#include <asm/sn/addrs.h>
#include <asm/sn/geo.h>
#include <asm/sn/l1.h>
#include <asm/sn/module.h>
#include <asm/sn/pcibr_provider.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include <asm/sn/sn_feature_sets.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/types.h>
@ -102,8 +104,7 @@ static struct hotplug_slot_attribute sn_slot_path_attr = __ATTR_RO(path);
static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
{
struct pcibus_info *pcibus_info;
int bricktype;
int bus_num;
u16 busnum, segment, ioboard_type;
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
@ -111,12 +112,14 @@ static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
if (!(pcibus_info->pbi_valid_devices & (1 << device)))
return -EPERM;
bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
bus_num = pcibus_info->pbi_buscommon.bs_persist_busnum & 0xf;
ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
busnum = pcibus_info->pbi_buscommon.bs_persist_busnum;
segment = pci_domain_nr(pci_bus) & 0xf;
/* Do not allow hotplug operations on base I/O cards */
if ((bricktype == L1_BRICKTYPE_IX || bricktype == L1_BRICKTYPE_IA) &&
(bus_num == 1 && device != 1))
if ((ioboard_type == L1_BRICKTYPE_IX ||
ioboard_type == L1_BRICKTYPE_IA) &&
(segment == 1 && busnum == 0 && device != 1))
return -EPERM;
return 1;
@ -125,23 +128,23 @@ static int sn_pci_slot_valid(struct pci_bus *pci_bus, int device)
static int sn_pci_bus_valid(struct pci_bus *pci_bus)
{
struct pcibus_info *pcibus_info;
int asic_type;
int bricktype;
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
u32 asic_type;
u16 ioboard_type;
/* Don't register slots hanging off the TIOCA bus */
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(pci_bus);
asic_type = pcibus_info->pbi_buscommon.bs_asic_type;
if (asic_type == PCIIO_ASIC_TYPE_TIOCA)
return -EPERM;
/* Only register slots in I/O Bricks that support hotplug */
bricktype = MODULE_GET_BTYPE(pcibus_info->pbi_moduleid);
switch (bricktype) {
ioboard_type = sn_ioboard_to_pci_bus(pci_bus);
switch (ioboard_type) {
case L1_BRICKTYPE_IX:
case L1_BRICKTYPE_PX:
case L1_BRICKTYPE_IA:
case L1_BRICKTYPE_PA:
case L1_BOARDTYPE_PCIX3SLOT:
return 1;
break;
default:
@ -175,14 +178,11 @@ static int sn_hp_slot_private_alloc(struct hotplug_slot *bss_hotplug_slot,
slot->pci_bus = pci_bus;
sprintf(bss_hotplug_slot->name, "%04x:%02x:%02x",
pci_domain_nr(pci_bus),
((int)pcibus_info->pbi_buscommon.bs_persist_busnum) & 0xf,
((u16)pcibus_info->pbi_buscommon.bs_persist_busnum),
device + 1);
sprintf(slot->physical_path, "module_%c%c%c%c%.2d",
'0'+RACK_GET_CLASS(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
'0'+RACK_GET_GROUP(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
'0'+RACK_GET_NUM(MODULE_GET_RACK(pcibus_info->pbi_moduleid)),
MODULE_GET_BTCHAR(pcibus_info->pbi_moduleid),
MODULE_GET_BPOS(pcibus_info->pbi_moduleid));
sn_generate_path(pci_bus, slot->physical_path);
slot->hotplug_slot = bss_hotplug_slot;
list_add(&slot->hp_list, &sn_hp_list);
@ -461,10 +461,12 @@ static inline int get_power_status(struct hotplug_slot *bss_hotplug_slot,
{
struct slot *slot = bss_hotplug_slot->private;
struct pcibus_info *pcibus_info;
u32 power;
pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus);
mutex_lock(&sn_hotplug_mutex);
*value = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
power = pcibus_info->pbi_enabled_devices & (1 << slot->device_num);
*value = power ? 1 : 0;
mutex_unlock(&sn_hotplug_mutex);
return 0;
}
@ -553,8 +555,8 @@ static int sn_pci_hotplug_init(void)
int rc;
int registered = 0;
if (sn_sal_rev() < SGI_HOTPLUG_PROM_REV) {
printk(KERN_ERR "%s: PROM version must be greater than 4.30\n",
if (!sn_prom_feature_available(PRF_HOTPLUG_SUPPORT)) {
printk(KERN_ERR "%s: PROM version does not support hotplug.\n",
__FUNCTION__);
return -EPERM;
}

8
drivers/pci/hotplug/shpchp.h
View file

@ -168,9 +168,9 @@ struct controller {
* error Messages
*/
#define msg_initialization_err "Initialization failure, error=%d\n"
#define msg_button_on "PCI slot #%d - powering on due to button press.\n"
#define msg_button_off "PCI slot #%d - powering off due to button press.\n"
#define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n"
#define msg_button_on "PCI slot #%s - powering on due to button press.\n"
#define msg_button_off "PCI slot #%s - powering off due to button press.\n"
#define msg_button_cancel "PCI slot #%s - action canceled due to button press.\n"
/* sysfs functions for the hotplug controller info */
extern void shpchp_create_ctrl_files (struct controller *ctrl);
@ -196,7 +196,7 @@ extern void queue_pushbutton_work(void *data);
static inline int get_hp_params_from_firmware(struct pci_dev *dev,
struct hotplug_params *hpp)
{
if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev, hpp)))
if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev->bus, hpp)))
return -ENODEV;
return 0;
}

8
drivers/pci/hotplug/shpchp_core.c
View file

@ -491,16 +491,9 @@ static int __init shpcd_init(void)
shpchp_poll_mode = 1;
#endif
shpchp_wq = create_singlethread_workqueue("shpchpd");
if (!shpchp_wq)
return -ENOMEM;
retval = pci_register_driver(&shpc_driver);
dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval);
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
if (retval) {
destroy_workqueue(shpchp_wq);
}
return retval;
}
@ -508,7 +501,6 @@ static void __exit shpcd_cleanup(void)
{
dbg("unload_shpchpd()\n");
pci_unregister_driver(&shpc_driver);
destroy_workqueue(shpchp_wq);
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}

32
drivers/pci/hotplug/shpchp_ctrl.c
View file

@ -72,7 +72,7 @@ u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id)
/*
* Button pressed - See if need to TAKE ACTION!!!
*/
info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Button pressed on Slot(%s)\n", p_slot->name);
event_type = INT_BUTTON_PRESS;
queue_interrupt_event(p_slot, event_type);
@ -101,7 +101,7 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
/*
* Switch opened
*/
info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Latch open on Slot(%s)\n", p_slot->name);
event_type = INT_SWITCH_OPEN;
if (p_slot->pwr_save && p_slot->presence_save) {
event_type = INT_POWER_FAULT;
@ -111,7 +111,7 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
/*
* Switch closed
*/
info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Latch close on Slot(%s)\n", p_slot->name);
event_type = INT_SWITCH_CLOSE;
}
@ -139,13 +139,13 @@ u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id)
/*
* Card Present
*/
info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Card present on Slot(%s)\n", p_slot->name);
event_type = INT_PRESENCE_ON;
} else {
/*
* Not Present
*/
info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Card not present on Slot(%s)\n", p_slot->name);
event_type = INT_PRESENCE_OFF;
}
@ -169,14 +169,14 @@ u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id)
/*
* Power fault Cleared
*/
info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Power fault cleared on Slot(%s)\n", p_slot->name);
p_slot->status = 0x00;
event_type = INT_POWER_FAULT_CLEAR;
} else {
/*
* Power fault
*/
info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
info("Power fault on Slot(%s)\n", p_slot->name);
event_type = INT_POWER_FAULT;
/* set power fault status for this board */
p_slot->status = 0xFF;
@ -496,10 +496,10 @@ static void handle_button_press_event(struct slot *p_slot)
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (getstatus) {
p_slot->state = BLINKINGOFF_STATE;
info(msg_button_off, p_slot->number);
info(msg_button_off, p_slot->name);
} else {
p_slot->state = BLINKINGON_STATE;
info(msg_button_on, p_slot->number);
info(msg_button_on, p_slot->name);
}
/* blink green LED and turn off amber */
p_slot->hpc_ops->green_led_blink(p_slot);
@ -522,7 +522,7 @@ static void handle_button_press_event(struct slot *p_slot)
else
p_slot->hpc_ops->green_led_off(p_slot);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
info(msg_button_cancel, p_slot->number);
info(msg_button_cancel, p_slot->name);
p_slot->state = STATIC_STATE;
break;
case POWEROFF_STATE:
@ -575,17 +575,17 @@ static int shpchp_enable_slot (struct slot *p_slot)
mutex_lock(&p_slot->ctrl->crit_sect);
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (rc || !getstatus) {
info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
info("No adapter on slot(%s)\n", p_slot->name);
goto out;
}
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
info("Latch open on slot(%s)\n", p_slot->name);
goto out;
}
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
info("Already enabled on slot(%s)\n", p_slot->name);
goto out;
}
@ -634,17 +634,17 @@ static int shpchp_disable_slot (struct slot *p_slot)
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (rc || !getstatus) {
info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
info("No adapter on slot(%s)\n", p_slot->name);
goto out;
}
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (rc || getstatus) {
info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
info("Latch open on slot(%s)\n", p_slot->name);
goto out;
}
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (rc || !getstatus) {
info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
info("Already disabled slot(%s)\n", p_slot->name);
goto out;
}

869
drivers/pci/hotplug/shpchp_hpc.c
View file

File diff suppressed because it is too large Load diff

31
drivers/pci/hotplug/shpchp_pci.c
View file

@ -47,21 +47,28 @@ static void program_fw_provided_values(struct pci_dev *dev)
return;
/* use default values if we can't get them from firmware */
if (get_hp_params_from_firmware(dev, &hpp)) {
hpp.cache_line_size = 8;
hpp.latency_timer = 0x40;
hpp.enable_serr = 0;
hpp.enable_perr = 0;
if (get_hp_params_from_firmware(dev, &hpp) ||
!hpp.t0 || (hpp.t0->revision > 1)) {
printk(KERN_WARNING
"%s: Could not get hotplug parameters. Use defaults\n",
__FUNCTION__);
hpp.t0 = &hpp.type0_data;
hpp.t0->revision = 0;
hpp.t0->cache_line_size = 8;
hpp.t0->latency_timer = 0x40;
hpp.t0->enable_serr = 0;
hpp.t0->enable_perr = 0;
}
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, hpp.cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp.latency_timer);
pci_write_config_byte(dev,
PCI_CACHE_LINE_SIZE, hpp.t0->cache_line_size);
pci_write_config_byte(dev, PCI_LATENCY_TIMER, hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
if (hpp.enable_serr)
if (hpp.t0->enable_serr)
pci_cmd |= PCI_COMMAND_SERR;
else
pci_cmd &= ~PCI_COMMAND_SERR;
if (hpp.enable_perr)
if (hpp.t0->enable_perr)
pci_cmd |= PCI_COMMAND_PARITY;
else
pci_cmd &= ~PCI_COMMAND_PARITY;
@ -70,13 +77,13 @@ static void program_fw_provided_values(struct pci_dev *dev)
/* Program bridge control value and child devices */
if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
hpp.latency_timer);
hpp.t0->latency_timer);
pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
if (hpp.enable_serr)
if (hpp.t0->enable_serr)
pci_bctl |= PCI_BRIDGE_CTL_SERR;
else
pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
if (hpp.enable_perr)
if (hpp.t0->enable_perr)
pci_bctl |= PCI_BRIDGE_CTL_PARITY;
else
pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;