Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 384 insertions, 0 deletions

diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
new file mode 100644
index 000000000000..5d19b39e9e2b
--- /dev/null
+++ b/drivers/acpi/pci_bind.c
@@ -0,0 +1,384 @@
+/*
+ *  pci_bind.c - ACPI PCI Device Binding ($Revision: 2 $)
+ *
+ *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/pm.h>
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+
+#define _COMPONENT              ACPI_PCI_COMPONENT
+ACPI_MODULE_NAME                ("pci_bind")
+
+struct acpi_pci_data {
+        struct acpi_pci_id      id;
+        struct pci_bus          *bus;
+        struct pci_dev          *dev;
+};
+
+
+void
+acpi_pci_data_handler (
+        acpi_handle             handle,
+        u32                     function,
+        void                    *context)
+{
+        ACPI_FUNCTION_TRACE("acpi_pci_data_handler");
+
+        /* TBD: Anything we need to do here? */
+
+        return_VOID;
+}
+
+
+/**
+ * acpi_os_get_pci_id
+ * ------------------
+ * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem)
+ * to resolve PCI information for ACPI-PCI devices defined in the namespace.
+ * This typically occurs when resolving PCI operation region information.
+ */
+#ifdef ACPI_FUTURE_USAGE
+acpi_status
+acpi_os_get_pci_id (
+        acpi_handle             handle,
+        struct acpi_pci_id      *id)
+{
+        int                     result = 0;
+        acpi_status             status = AE_OK;
+        struct acpi_device      *device = NULL;
+        struct acpi_pci_data    *data = NULL;
+
+        ACPI_FUNCTION_TRACE("acpi_os_get_pci_id");
+
+        if (!id)
+                return_ACPI_STATUS(AE_BAD_PARAMETER);
+
+        result = acpi_bus_get_device(handle, &device);
+        if (result) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
+                        "Invalid ACPI Bus context for device %s\n",
+                        acpi_device_bid(device)));
+                return_ACPI_STATUS(AE_NOT_EXIST);
+        }
+
+        status = acpi_get_data(handle, acpi_pci_data_handler, (void**) &data);
+        if (ACPI_FAILURE(status) || !data || !data->dev) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
+                        "Invalid ACPI-PCI context for device %s\n",
+                        acpi_device_bid(device)));
+                return_ACPI_STATUS(status);
+        }
+
+        *id = data->id;
+        
+        /*
+        id->segment = data->id.segment;
+        id->bus = data->id.bus;
+        id->device = data->id.device;
+        id->function = data->id.function;
+        */
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, 
+                "Device %s has PCI address %02x:%02x:%02x.%02x\n", 
+                acpi_device_bid(device), id->segment, id->bus, 
+                id->device, id->function));
+
+        return_ACPI_STATUS(AE_OK);
+}
+#endif  /*  ACPI_FUTURE_USAGE  */
+
+        
+int
+acpi_pci_bind (
+        struct acpi_device      *device)
+{
+        int                     result = 0;
+        acpi_status             status = AE_OK;
+        struct acpi_pci_data    *data = NULL;
+        struct acpi_pci_data    *pdata = NULL;
+        char                    *pathname = NULL;
+        struct acpi_buffer      buffer = {0, NULL};
+        acpi_handle             handle = NULL;
+
+        ACPI_FUNCTION_TRACE("acpi_pci_bind");
+
+        if (!device || !device->parent)
+                return_VALUE(-EINVAL);
+
+        pathname = kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+        if(!pathname)
+                return_VALUE(-ENOMEM);
+        memset(pathname, 0, ACPI_PATHNAME_MAX);
+        buffer.length = ACPI_PATHNAME_MAX;
+        buffer.pointer = pathname;
+
+        data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
+        if (!data){
+                kfree (pathname);
+                return_VALUE(-ENOMEM);
+        }
+        memset(data, 0, sizeof(struct acpi_pci_data));
+
+        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n", 
+                pathname));
+
+        /* 
+         * Segment & Bus
+         * -------------
+         * These are obtained via the parent device's ACPI-PCI context.
+         */
+        status = acpi_get_data(device->parent->handle, acpi_pci_data_handler, 
+                (void**) &pdata);
+        if (ACPI_FAILURE(status) || !pdata || !pdata->bus) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
+                        "Invalid ACPI-PCI context for parent device %s\n",
+                        acpi_device_bid(device->parent)));
+                result = -ENODEV;
+                goto end;
+        }
+        data->id.segment = pdata->id.segment;
+        data->id.bus = pdata->bus->number;
+
+        /*
+         * Device & Function
+         * -----------------
+         * These are simply obtained from the device's _ADR method.  Note
+         * that a value of zero is valid.
+         */
+        data->id.device = device->pnp.bus_address >> 16;
+        data->id.function = device->pnp.bus_address & 0xFFFF;
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %02x:%02x:%02x.%02x\n",
+                data->id.segment, data->id.bus, data->id.device, 
+                data->id.function));
+
+        /*
+         * TBD: Support slot devices (e.g. function=0xFFFF).
+         */
+
+        /* 
+         * Locate PCI Device
+         * -----------------
+         * Locate matching device in PCI namespace.  If it doesn't exist
+         * this typically means that the device isn't currently inserted
+         * (e.g. docking station, port replicator, etc.).
+         */
+        data->dev = pci_find_slot(data->id.bus, PCI_DEVFN(data->id.device, data->id.function));
+        if (!data->dev) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, 
+                        "Device %02x:%02x:%02x.%02x not present in PCI namespace\n",
+                        data->id.segment, data->id.bus, 
+                        data->id.device, data->id.function));
+                result = -ENODEV;
+                goto end;
+        }
+        if (!data->dev->bus) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
+                        "Device %02x:%02x:%02x.%02x has invalid 'bus' field\n",
+                        data->id.segment, data->id.bus, 
+                        data->id.device, data->id.function));
+                result = -ENODEV;
+                goto end;
+        }
+
+        /*
+         * PCI Bridge?
+         * -----------
+         * If so, set the 'bus' field and install the 'bind' function to 
+         * facilitate callbacks for all of its children.
+         */
+        if (data->dev->subordinate) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, 
+                        "Device %02x:%02x:%02x.%02x is a PCI bridge\n",
+                        data->id.segment, data->id.bus, 
+                        data->id.device, data->id.function));
+                data->bus = data->dev->subordinate;
+                device->ops.bind = acpi_pci_bind;
+                device->ops.unbind = acpi_pci_unbind;
+        }
+
+        /*
+         * Attach ACPI-PCI Context
+         * -----------------------
+         * Thus binding the ACPI and PCI devices.
+         */
+        status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Unable to attach ACPI-PCI context to device %s\n",
+                        acpi_device_bid(device)));
+                result = -ENODEV;
+                goto end;
+        }
+
+        /*
+         * PCI Routing Table
+         * -----------------
+         * Evaluate and parse _PRT, if exists.  This code is independent of 
+         * PCI bridges (above) to allow parsing of _PRT objects within the
+         * scope of non-bridge devices.  Note that _PRTs within the scope of
+         * a PCI bridge assume the bridge's subordinate bus number.
+         *
+         * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
+         */
+        status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
+        if (ACPI_SUCCESS(status)) {
+                if (data->bus)                              /* PCI-PCI bridge */
+                        acpi_pci_irq_add_prt(device->handle, data->id.segment, 
+                                data->bus->number);
+                else                                 /* non-bridge PCI device */
+                        acpi_pci_irq_add_prt(device->handle, data->id.segment,
+                                data->id.bus);
+        }
+
+end:
+        kfree(pathname);
+        if (result)
+                kfree(data);
+
+        return_VALUE(result);
+}
+
+int acpi_pci_unbind(
+        struct acpi_device      *device)
+{
+        int                     result = 0;
+        acpi_status             status = AE_OK;
+        struct acpi_pci_data    *data = NULL;
+        char                    *pathname = NULL;
+        struct acpi_buffer      buffer = {0, NULL};
+
+        ACPI_FUNCTION_TRACE("acpi_pci_unbind");
+
+        if (!device || !device->parent)
+                return_VALUE(-EINVAL);
+
+        pathname = (char *) kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+        if(!pathname)
+                return_VALUE(-ENOMEM);
+        memset(pathname, 0, ACPI_PATHNAME_MAX);
+
+        buffer.length = ACPI_PATHNAME_MAX;
+        buffer.pointer = pathname;
+        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n",
+                pathname));
+        kfree(pathname);
+
+        status = acpi_get_data(device->handle, acpi_pci_data_handler, (void**)&data);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Unable to get data from device %s\n",
+                        acpi_device_bid(device)));
+                result = -ENODEV;
+                goto end;
+        }
+
+        status = acpi_detach_data(device->handle, acpi_pci_data_handler);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Unable to detach data from device %s\n",
+                        acpi_device_bid(device)));
+                result = -ENODEV;
+                goto end;
+        }
+        if (data->dev->subordinate) {
+                acpi_pci_irq_del_prt(data->id.segment, data->bus->number);
+        }
+        kfree(data);
+
+end:
+        return_VALUE(result);
+}
+
+int 
+acpi_pci_bind_root (
+        struct acpi_device      *device,
+        struct acpi_pci_id      *id,
+        struct pci_bus          *bus) 
+{
+        int                     result = 0;
+        acpi_status             status = AE_OK;
+        struct acpi_pci_data    *data = NULL;
+        char                    *pathname = NULL;
+        struct acpi_buffer      buffer = {0, NULL};
+
+        ACPI_FUNCTION_TRACE("acpi_pci_bind_root");
+
+        pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+        if(!pathname)
+                return_VALUE(-ENOMEM);
+        memset(pathname, 0, ACPI_PATHNAME_MAX);
+
+        buffer.length = ACPI_PATHNAME_MAX;
+        buffer.pointer = pathname;
+
+        if (!device || !id || !bus){
+                kfree(pathname);
+                return_VALUE(-EINVAL);
+        }
+
+        data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
+        if (!data){
+                kfree(pathname);
+                return_VALUE(-ENOMEM);
+        }
+        memset(data, 0, sizeof(struct acpi_pci_data));
+
+        data->id = *id;
+        data->bus = bus;
+        device->ops.bind = acpi_pci_bind;
+        device->ops.unbind = acpi_pci_unbind;
+
+        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI root bridge [%s] to "
+                "%02x:%02x\n", pathname, id->segment, id->bus));
+
+        status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        "Unable to attach ACPI-PCI context to device %s\n",
+                        pathname));
+                result = -ENODEV;
+                goto end;
+        }
+
+end:
+        kfree(pathname);
+        if (result != 0)
+                kfree(data);
+
+        return_VALUE(result);
+}