*/
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#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)
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) {
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,
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;
}
}
}
}
- 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;
}
/* 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);
/* 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
* 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;
}
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");
git://git.onelab.eu / linux-2.6.git / blobdiff