extern char line_buf[80];
#endif /*ENABLE_DEBUGGER */
-#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
-int acpi_must_unregister_table = FALSE;
-#endif
-
static unsigned int acpi_irq_irq;
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
#define OSI_STRING_LENGTH_MAX 64 /* arbitrary */
static char osi_additional_string[OSI_STRING_LENGTH_MAX];
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+static int acpi_no_initrd_override;
+#endif
+
/*
* "Ode to _OSI(Linux)"
*
acpi_status acpi_os_initialize1(void)
{
- /*
- * Initialize PCI configuration space access, as we'll need to access
- * it while walking the namespace (bus 0 and root bridges w/ _BBNs).
- */
- if (!raw_pci_ops) {
- printk(KERN_ERR PREFIX
- "Access to PCI configuration space unavailable\n");
- return AE_NULL_ENTRY;
- }
kacpid_wq = create_singlethread_workqueue("kacpid");
kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
BUG_ON(!kacpid_wq);
va_end(args);
}
-EXPORT_SYMBOL(acpi_os_printf);
-
void acpi_os_vprintf(const char *fmt, va_list args)
{
static char buffer[512];
"System description tables not found\n");
return 0;
}
- } else
- return acpi_find_rsdp();
+ } else {
+ acpi_physical_address pa = 0;
+
+ acpi_find_root_pointer(&pa);
+ return pa;
+ }
}
-void __iomem *
-#ifdef CONFIG_XEN
-__init_refok
-#endif
+void __iomem *__init_refok
acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
{
if (phys > ULONG_MAX) {
}
#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
-#define MAX_DS_SDTS 10
-static struct acpi_table_header *ds_sdt_buffers[MAX_DS_SDTS];
-static unsigned int tables_loaded = 0;
-
-void acpi_load_override_tables(void){
- struct file *firmware_file;
- mm_segment_t oldfs;
- unsigned long len, len2;
- struct kstat stat;
- unsigned int x, y;
- char *ramfs_ds_sdt_names[MAX_DS_SDTS] = {
- "/DSDT.aml",
- "/SSDT.aml",
- "/SSDT1.aml",
- "/SSDT2.aml",
- "/SSDT3.aml",
- "/SSDT4.aml",
- "/SSDT5.aml",
- "/SSDT6.aml",
- "/SSDT7.aml",
- "/SSDT8.aml",
- };
+static struct acpi_table_header *acpi_find_dsdt_initrd(void)
+{
+ struct file *firmware_file;
+ mm_segment_t oldfs;
+ unsigned long len, len2;
+ struct acpi_table_header *dsdt_buffer, *ret = NULL;
+ struct kstat stat;
+ char *ramfs_dsdt_name = "/DSDT.aml";
+
+ printk(KERN_INFO PREFIX "Checking initramfs for custom DSDT\n");
+
/*
* Never do this at home, only the user-space is allowed to open a file.
- * The clean way would be to use the firmware loader. But this code must be run
- * before there is any userspace available. So we need a static/init firmware
- * infrastructure, which doesn't exist yet...
+ * The clean way would be to use the firmware loader.
+ * But this code must be run before there is any userspace available.
+ * A static/init firmware infrastructure doesn't exist yet...
*/
- for (x = 0; x < MAX_DS_SDTS; x++){
- if (vfs_stat(ramfs_ds_sdt_names[x], &stat) < 0) {
- continue;
- }
- len = stat.size;
- /* check especially against empty files */
- if (len <= 4) {
- printk("error file %s is too small, only %lu bytes.\n",
- ramfs_ds_sdt_names[x], len);
- continue;
- }
-
- ds_sdt_buffers[x] = kmalloc(len, GFP_KERNEL);
- if (!ds_sdt_buffers[x]) {
- printk("error when allocating %lu bytes of memory.\n",
- len);
- /* better free all tables again */
- for (y = 0; y < x; y++){
- if (ds_sdt_buffers[y])
- kfree(ds_sdt_buffers[x]);
- }
- acpi_must_unregister_table = FALSE;
- return;
- }
+ if (vfs_stat(ramfs_dsdt_name, &stat) < 0)
+ return ret;
+
+ len = stat.size;
+ /* check especially against empty files */
+ if (len <= 4) {
+ printk(KERN_ERR PREFIX "Failed: DSDT only %lu bytes.\n", len);
+ return ret;
+ }
- firmware_file = filp_open(ramfs_ds_sdt_names[x], O_RDONLY, 0);
- if (IS_ERR(firmware_file)) {
- printk("error, could not open file %s.\n",
- ramfs_ds_sdt_names[x]);
- kfree(ds_sdt_buffers[x]);
- continue;
- }
+ firmware_file = filp_open(ramfs_dsdt_name, O_RDONLY, 0);
+ if (IS_ERR(firmware_file)) {
+ printk(KERN_ERR PREFIX "Failed to open %s.\n", ramfs_dsdt_name);
+ return ret;
+ }
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- len2 = vfs_read(firmware_file,
- (char __user *)ds_sdt_buffers[x],
- len,
- &firmware_file->f_pos);
- set_fs(oldfs);
- filp_close(firmware_file, NULL);
- if (len2 < len) {
- printk("error trying to read %lu bytes from %s.\n",
- len, ramfs_ds_sdt_names[x]);
- kfree(ds_sdt_buffers[x]);
- continue;
- }
- printk(PREFIX "successfully read %lu bytes from file %s\n",
- len, ramfs_ds_sdt_names[x]);
+ dsdt_buffer = kmalloc(len, GFP_ATOMIC);
+ if (!dsdt_buffer) {
+ printk(KERN_ERR PREFIX "Failed to allocate %lu bytes.\n", len);
+ goto err;
}
-}
-struct acpi_table_header * acpi_find_dsdt_initrd(struct acpi_table_header * t)
-{
- struct acpi_table_header *ret = NULL;
- unsigned int x;
- for (x = 0; x < MAX_DS_SDTS; x++){
- if (ds_sdt_buffers[x]){
- if (!memcmp(ds_sdt_buffers[x]->signature,
- t->signature, 4) &&
- !memcmp(ds_sdt_buffers[x]->oem_table_id,
- t->oem_table_id, 8)){
- ret = ds_sdt_buffers[x];
- printk(PREFIX "Override [%4.4s-%8.8s]"
- " from initramfs -"
- " tainting kernel\n",
- t->signature,
- t->oem_table_id);
- add_taint(TAINT_NO_SUPPORT);
- acpi_must_unregister_table = TRUE;
- break;
- }
- }
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ len2 = vfs_read(firmware_file, (char __user *)dsdt_buffer, len,
+ &firmware_file->f_pos);
+ set_fs(oldfs);
+ if (len2 < len) {
+ printk(KERN_ERR PREFIX "Failed to read %lu bytes from %s.\n",
+ len, ramfs_dsdt_name);
+ ACPI_FREE(dsdt_buffer);
+ goto err;
}
+
+ printk(KERN_INFO PREFIX "Found %lu byte DSDT in %s.\n",
+ len, ramfs_dsdt_name);
+ ret = dsdt_buffer;
+err:
+ filp_close(firmware_file, NULL);
return ret;
}
#endif
*new_table = (struct acpi_table_header *)AmlCode;
#endif
#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
- if (!tables_loaded){
- acpi_load_override_tables();
- tables_loaded = 1;
- }
- if (!strncmp(existing_table->signature, "DSDT", 4) ||
- !strncmp(existing_table->signature, "SSDT", 4)){
- *new_table = acpi_find_dsdt_initrd(existing_table);
+ if ((strncmp(existing_table->signature, "DSDT", 4) == 0) &&
+ !acpi_no_initrd_override) {
+ struct acpi_table_header *initrd_table;
+
+ initrd_table = acpi_find_dsdt_initrd();
+ if (initrd_table)
+ *new_table = initrd_table;
}
#endif
+ if (*new_table != NULL) {
+ printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], "
+ "this is unsafe: tainting kernel\n",
+ existing_table->signature,
+ existing_table->oem_table_id);
+ add_taint(TAINT_OVERRIDDEN_ACPI_TABLE);
+ }
return AE_OK;
}
+#ifdef CONFIG_ACPI_CUSTOM_DSDT_INITRD
+static int __init acpi_no_initrd_override_setup(char *s)
+{
+ acpi_no_initrd_override = 1;
+ return 1;
+}
+__setup("acpi_no_initrd_override", acpi_no_initrd_override_setup);
+#endif
+
static irqreturn_t acpi_irq(int irq, void *dev_id)
{
- return (*acpi_irq_handler) (acpi_irq_context) ? IRQ_HANDLED : IRQ_NONE;
+ u32 handled;
+
+ handled = (*acpi_irq_handler) (acpi_irq_context);
+
+ if (handled) {
+ acpi_irq_handled++;
+ return IRQ_HANDLED;
+ } else
+ return IRQ_NONE;
}
acpi_status
{
unsigned int irq;
+ acpi_irq_stats_init();
+
/*
* Ignore the GSI from the core, and use the value in our copy of the
* FADT. It may not be the same if an interrupt source override exists
schedule_timeout_interruptible(msecs_to_jiffies(ms));
}
-EXPORT_SYMBOL(acpi_os_sleep);
-
void acpi_os_stall(u32 us)
{
while (us) {
}
}
-EXPORT_SYMBOL(acpi_os_stall);
-
/*
* Support ACPI 3.0 AML Timer operand
* Returns 64-bit free-running, monotonically increasing timer
acpi_status
acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
- void *value, u32 width)
+ u32 *value, u32 width)
{
int result, size;
return AE_ERROR;
}
- BUG_ON(!raw_pci_ops);
-
- result = raw_pci_ops->read(pci_id->segment, pci_id->bus,
- PCI_DEVFN(pci_id->device, pci_id->function),
- reg, size, value);
+ result = raw_pci_read(pci_id->segment, pci_id->bus,
+ PCI_DEVFN(pci_id->device, pci_id->function),
+ reg, size, value);
return (result ? AE_ERROR : AE_OK);
}
-EXPORT_SYMBOL(acpi_os_read_pci_configuration);
-
acpi_status
acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
acpi_integer value, u32 width)
return AE_ERROR;
}
- BUG_ON(!raw_pci_ops);
-
- result = raw_pci_ops->write(pci_id->segment, pci_id->bus,
- PCI_DEVFN(pci_id->device, pci_id->function),
- reg, size, value);
+ result = raw_pci_write(pci_id->segment, pci_id->bus,
+ PCI_DEVFN(pci_id->device, pci_id->function),
+ reg, size, value);
return (result ? AE_ERROR : AE_OK);
}
acpi_status status;
unsigned long temp;
acpi_object_type type;
- u8 tu8;
acpi_get_parent(chandle, &handle);
if (handle != rhandle) {
acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL,
&temp);
if (ACPI_SUCCESS(status)) {
+ u32 val;
pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp));
pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp));
/* any nicer way to get bus number of bridge ? */
status =
- acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8,
+ acpi_os_read_pci_configuration(pci_id, 0x0e, &val,
8);
if (ACPI_SUCCESS(status)
- && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) {
+ && ((val & 0x7f) == 1 || (val & 0x7f) == 2)) {
status =
acpi_os_read_pci_configuration(pci_id, 0x18,
- &tu8, 8);
+ &val, 8);
if (!ACPI_SUCCESS(status)) {
/* Certainly broken... FIX ME */
return;
}
*is_bridge = 1;
- pci_id->bus = tu8;
+ pci_id->bus = val;
status =
acpi_os_read_pci_configuration(pci_id, 0x19,
- &tu8, 8);
+ &val, 8);
if (ACPI_SUCCESS(status)) {
- *bus_number = tu8;
+ *bus_number = val;
}
} else
*is_bridge = 0;
dpc->function(dpc->context);
kfree(dpc);
- /* Yield cpu to notify thread */
- cond_resched();
-
- return;
-}
-
-static void acpi_os_execute_notify(struct work_struct *work)
-{
- struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
-
- if (!dpc) {
- printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
- return;
- }
-
- dpc->function(dpc->context);
-
- kfree(dpc);
-
return;
}
{
acpi_status status = AE_OK;
struct acpi_os_dpc *dpc;
-
+ struct workqueue_struct *queue;
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Scheduling function [%p(%p)] for deferred execution.\n",
function, context));
dpc->function = function;
dpc->context = context;
- if (type == OSL_NOTIFY_HANDLER) {
- INIT_WORK(&dpc->work, acpi_os_execute_notify);
- if (!queue_work(kacpi_notify_wq, &dpc->work)) {
- status = AE_ERROR;
- kfree(dpc);
- }
- } else {
- INIT_WORK(&dpc->work, acpi_os_execute_deferred);
- if (!queue_work(kacpid_wq, &dpc->work)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Call to queue_work() failed.\n"));
- status = AE_ERROR;
- kfree(dpc);
- }
+ INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+ queue = (type == OSL_NOTIFY_HANDLER) ? kacpi_notify_wq : kacpid_wq;
+ if (!queue_work(queue, &dpc->work)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "Call to queue_work() failed.\n"));
+ status = AE_ERROR;
+ kfree(dpc);
}
return_ACPI_STATUS(status);
}
return AE_OK;
}
-EXPORT_SYMBOL(acpi_os_create_semaphore);
-
/*
* TODO: A better way to delete semaphores? Linux doesn't have a
* 'delete_semaphore()' function -- may result in an invalid
return AE_OK;
}
-EXPORT_SYMBOL(acpi_os_delete_semaphore);
-
/*
* TODO: The kernel doesn't have a 'down_timeout' function -- had to
* improvise. The process is to sleep for one scheduler quantum
return status;
}
-EXPORT_SYMBOL(acpi_os_wait_semaphore);
-
/*
* TODO: Support for units > 1?
*/
return AE_OK;
}
-EXPORT_SYMBOL(acpi_os_signal_semaphore);
-
#ifdef ACPI_FUTURE_USAGE
u32 acpi_os_get_line(char *buffer)
{
return AE_OK;
}
-EXPORT_SYMBOL(acpi_os_signal);
-
static int __init acpi_os_name_setup(char *str)
{
char *p = acpi_os_name;
* string starting with '!' disables that string
* otherwise string is added to list, augmenting built-in strings
*/
-static int __init acpi_osi_setup(char *str)
+int __init acpi_osi_setup(char *str)
{
if (str == NULL || *str == '\0') {
printk(KERN_INFO PREFIX "_OSI method disabled\n");
if (clash) {
if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
- printk("%sACPI: %s resource %s [0x%llx-0x%llx]"
+ printk(KERN_INFO "%sACPI: %s resource %s [0x%llx-0x%llx]"
" conflicts with ACPI region %s"
" [0x%llx-0x%llx]\n",
acpi_enforce_resources == ENFORCE_RESOURCES_LAX
projects / linux-flexiantxendom0-3.2.10.git / blobdiff