X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fpci%2Fpci-acpi.c;h=9d6fc8e6285d0c557a5e1778e468f49066ff4da5;hb=31d5d275a118527a2b9b0f68613428f176efbb8f;hp=4a23654184fc04da02eb1a73468818709fbe6371;hpb=b9c64498f53e0f4d90eec03048f73ac215bb6f79;p=linux-2.6-omap-h63xx.git diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 4a23654184f..9d6fc8e6285 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -19,8 +19,31 @@ #include #include "pci.h" -static u32 ctrlset_buf[3] = {0, 0, 0}; -static u32 global_ctrlsets = 0; +struct acpi_osc_data { + acpi_handle handle; + u32 ctrlset_buf[3]; + u32 global_ctrlsets; + struct list_head sibiling; +}; +static LIST_HEAD(acpi_osc_data_list); + +static struct acpi_osc_data *acpi_get_osc_data(acpi_handle handle) +{ + struct acpi_osc_data *data; + + list_for_each_entry(data, &acpi_osc_data_list, sibiling) { + if (data->handle == handle) + return data; + } + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return NULL; + INIT_LIST_HEAD(&data->sibiling); + data->handle = handle; + list_add_tail(&data->sibiling, &acpi_osc_data_list); + return data; +} + static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66}; static acpi_status @@ -37,8 +60,27 @@ acpi_query_osc ( union acpi_object *out_obj; u32 osc_dw0; acpi_status *ret_status = (acpi_status *)retval; + struct acpi_osc_data *osc_data; + u32 flags = (unsigned long)context, temp; + acpi_handle tmp; + + status = acpi_get_handle(handle, "_OSC", &tmp); + if (ACPI_FAILURE(status)) + return status; + + osc_data = acpi_get_osc_data(handle); + if (!osc_data) { + printk(KERN_ERR "acpi osc data array is full\n"); + return AE_ERROR; + } + + osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] |= (flags & OSC_SUPPORT_MASKS); + + /* do _OSC query for all possible controls */ + temp = osc_data->ctrlset_buf[OSC_CONTROL_TYPE]; + osc_data->ctrlset_buf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS; - /* Setting up input parameters */ input.count = 4; input.pointer = in_params; @@ -51,13 +93,11 @@ acpi_query_osc ( in_params[2].integer.value = 3; in_params[3].type = ACPI_TYPE_BUFFER; in_params[3].buffer.length = 12; - in_params[3].buffer.pointer = (u8 *)context; + in_params[3].buffer.pointer = (u8 *)osc_data->ctrlset_buf; status = acpi_evaluate_object(handle, "_OSC", &input, &output); - if (ACPI_FAILURE (status)) { - *ret_status = status; - return status; - } + if (ACPI_FAILURE(status)) + goto out_nofree; out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { @@ -76,7 +116,8 @@ acpi_query_osc ( printk(KERN_DEBUG "_OSC invalid revision\n"); if (osc_dw0 & OSC_CAPABILITIES_MASK_ERROR) { /* Update Global Control Set */ - global_ctrlsets = *((u32 *)(out_obj->buffer.pointer+8)); + osc_data->global_ctrlsets = + *((u32 *)(out_obj->buffer.pointer + 8)); status = AE_OK; goto query_osc_out; } @@ -85,12 +126,21 @@ acpi_query_osc ( } /* Update Global Control Set */ - global_ctrlsets = *((u32 *)(out_obj->buffer.pointer + 8)); + osc_data->global_ctrlsets = *((u32 *)(out_obj->buffer.pointer + 8)); status = AE_OK; query_osc_out: kfree(output.pointer); +out_nofree: *ret_status = status; + + osc_data->ctrlset_buf[OSC_QUERY_TYPE] = !OSC_QUERY_ENABLE; + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = temp; + if (ACPI_FAILURE(status)) { + /* no osc support at all */ + osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] = 0; + } + return status; } @@ -165,28 +215,15 @@ run_osc_out: **/ acpi_status __pci_osc_support_set(u32 flags, const char *hid) { - u32 temp; - acpi_status retval; + acpi_status retval = AE_NOT_FOUND; if (!(flags & OSC_SUPPORT_MASKS)) { return AE_TYPE; } - ctrlset_buf[OSC_SUPPORT_TYPE] |= (flags & OSC_SUPPORT_MASKS); - - /* do _OSC query for all possible controls */ - temp = ctrlset_buf[OSC_CONTROL_TYPE]; - ctrlset_buf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; - ctrlset_buf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS; acpi_get_devices(hid, acpi_query_osc, - ctrlset_buf, + (void *)(unsigned long)flags, (void **) &retval ); - ctrlset_buf[OSC_QUERY_TYPE] = !OSC_QUERY_ENABLE; - ctrlset_buf[OSC_CONTROL_TYPE] = temp; - if (ACPI_FAILURE(retval)) { - /* no osc support at all */ - ctrlset_buf[OSC_SUPPORT_TYPE] = 0; - } return AE_OK; } @@ -201,19 +238,31 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) { acpi_status status; u32 ctrlset; + acpi_handle tmp; + struct acpi_osc_data *osc_data; + + status = acpi_get_handle(handle, "_OSC", &tmp); + if (ACPI_FAILURE(status)) + return status; + + osc_data = acpi_get_osc_data(handle); + if (!osc_data) { + printk(KERN_ERR "acpi osc data array is full\n"); + return AE_ERROR; + } ctrlset = (flags & OSC_CONTROL_MASKS); if (!ctrlset) { return AE_TYPE; } - if (ctrlset_buf[OSC_SUPPORT_TYPE] && - ((global_ctrlsets & ctrlset) != ctrlset)) { + if (osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] && + ((osc_data->global_ctrlsets & ctrlset) != ctrlset)) { return AE_SUPPORT; } - ctrlset_buf[OSC_CONTROL_TYPE] |= ctrlset; - status = acpi_run_osc(handle, ctrlset_buf); + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] |= ctrlset; + status = acpi_run_osc(handle, osc_data->ctrlset_buf); if (ACPI_FAILURE (status)) { - ctrlset_buf[OSC_CONTROL_TYPE] &= ~ctrlset; + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] &= ~ctrlset; } return status; @@ -272,21 +321,29 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) { acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev); acpi_handle tmp; - static int state_conv[] = { - [0] = 0, - [1] = 1, - [2] = 2, - [3] = 3, - [4] = 3 + static const u8 state_conv[] = { + [PCI_D0] = ACPI_STATE_D0, + [PCI_D1] = ACPI_STATE_D1, + [PCI_D2] = ACPI_STATE_D2, + [PCI_D3hot] = ACPI_STATE_D3, + [PCI_D3cold] = ACPI_STATE_D3 }; - int acpi_state = state_conv[(int __force) state]; if (!handle) return -ENODEV; /* If the ACPI device has _EJ0, ignore the device */ if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp))) return 0; - return acpi_bus_set_power(handle, acpi_state); + + switch (state) { + case PCI_D0: + case PCI_D1: + case PCI_D2: + case PCI_D3hot: + case PCI_D3cold: + return acpi_bus_set_power(handle, state_conv[state]); + } + return -EINVAL; }