mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Alex Deucher](/assets/img/avatar_default.png)
These functions duplicated functionality which was ultimately added to the pci core. All users of these functions have been ported to using the newly exposed pci functionality. These functions are no longer used, so drop them. Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
364 lines
9.8 KiB
C
364 lines
9.8 KiB
C
/*
|
|
* Copyright 2003 José Fonseca.
|
|
* Copyright 2003 Leif Delgass.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/export.h>
|
|
#include <drm/drm_pci.h>
|
|
#include <drm/drmP.h>
|
|
#include "drm_internal.h"
|
|
#include "drm_legacy.h"
|
|
|
|
/**
|
|
* drm_pci_alloc - Allocate a PCI consistent memory block, for DMA.
|
|
* @dev: DRM device
|
|
* @size: size of block to allocate
|
|
* @align: alignment of block
|
|
*
|
|
* FIXME: This is a needless abstraction of the Linux dma-api and should be
|
|
* removed.
|
|
*
|
|
* Return: A handle to the allocated memory block on success or NULL on
|
|
* failure.
|
|
*/
|
|
drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t align)
|
|
{
|
|
drm_dma_handle_t *dmah;
|
|
unsigned long addr;
|
|
size_t sz;
|
|
|
|
/* pci_alloc_consistent only guarantees alignment to the smallest
|
|
* PAGE_SIZE order which is greater than or equal to the requested size.
|
|
* Return NULL here for now to make sure nobody tries for larger alignment
|
|
*/
|
|
if (align > size)
|
|
return NULL;
|
|
|
|
dmah = kmalloc(sizeof(drm_dma_handle_t), GFP_KERNEL);
|
|
if (!dmah)
|
|
return NULL;
|
|
|
|
dmah->size = size;
|
|
dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, &dmah->busaddr, GFP_KERNEL | __GFP_COMP);
|
|
|
|
if (dmah->vaddr == NULL) {
|
|
kfree(dmah);
|
|
return NULL;
|
|
}
|
|
|
|
memset(dmah->vaddr, 0, size);
|
|
|
|
/* XXX - Is virt_to_page() legal for consistent mem? */
|
|
/* Reserve */
|
|
for (addr = (unsigned long)dmah->vaddr, sz = size;
|
|
sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) {
|
|
SetPageReserved(virt_to_page((void *)addr));
|
|
}
|
|
|
|
return dmah;
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_pci_alloc);
|
|
|
|
/*
|
|
* Free a PCI consistent memory block without freeing its descriptor.
|
|
*
|
|
* This function is for internal use in the Linux-specific DRM core code.
|
|
*/
|
|
void __drm_legacy_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah)
|
|
{
|
|
unsigned long addr;
|
|
size_t sz;
|
|
|
|
if (dmah->vaddr) {
|
|
/* XXX - Is virt_to_page() legal for consistent mem? */
|
|
/* Unreserve */
|
|
for (addr = (unsigned long)dmah->vaddr, sz = dmah->size;
|
|
sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) {
|
|
ClearPageReserved(virt_to_page((void *)addr));
|
|
}
|
|
dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr,
|
|
dmah->busaddr);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_pci_free - Free a PCI consistent memory block
|
|
* @dev: DRM device
|
|
* @dmah: handle to memory block
|
|
*
|
|
* FIXME: This is a needless abstraction of the Linux dma-api and should be
|
|
* removed.
|
|
*/
|
|
void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah)
|
|
{
|
|
__drm_legacy_pci_free(dev, dmah);
|
|
kfree(dmah);
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_pci_free);
|
|
|
|
#ifdef CONFIG_PCI
|
|
|
|
static int drm_get_pci_domain(struct drm_device *dev)
|
|
{
|
|
#ifndef __alpha__
|
|
/* For historical reasons, drm_get_pci_domain() is busticated
|
|
* on most archs and has to remain so for userspace interface
|
|
* < 1.4, except on alpha which was right from the beginning
|
|
*/
|
|
if (dev->if_version < 0x10004)
|
|
return 0;
|
|
#endif /* __alpha__ */
|
|
|
|
return pci_domain_nr(dev->pdev->bus);
|
|
}
|
|
|
|
int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
|
|
{
|
|
master->unique = kasprintf(GFP_KERNEL, "pci:%04x:%02x:%02x.%d",
|
|
drm_get_pci_domain(dev),
|
|
dev->pdev->bus->number,
|
|
PCI_SLOT(dev->pdev->devfn),
|
|
PCI_FUNC(dev->pdev->devfn));
|
|
if (!master->unique)
|
|
return -ENOMEM;
|
|
|
|
master->unique_len = strlen(master->unique);
|
|
return 0;
|
|
}
|
|
|
|
static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p)
|
|
{
|
|
if ((p->busnum >> 8) != drm_get_pci_domain(dev) ||
|
|
(p->busnum & 0xff) != dev->pdev->bus->number ||
|
|
p->devnum != PCI_SLOT(dev->pdev->devfn) || p->funcnum != PCI_FUNC(dev->pdev->devfn))
|
|
return -EINVAL;
|
|
|
|
p->irq = dev->pdev->irq;
|
|
|
|
DRM_DEBUG("%d:%d:%d => IRQ %d\n", p->busnum, p->devnum, p->funcnum,
|
|
p->irq);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_irq_by_busid - Get interrupt from bus ID
|
|
* @dev: DRM device
|
|
* @data: IOCTL parameter pointing to a drm_irq_busid structure
|
|
* @file_priv: DRM file private.
|
|
*
|
|
* Finds the PCI device with the specified bus id and gets its IRQ number.
|
|
* This IOCTL is deprecated, and will now return EINVAL for any busid not equal
|
|
* to that of the device that this DRM instance attached to.
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_irq_by_busid(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_irq_busid *p = data;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_LEGACY))
|
|
return -EINVAL;
|
|
|
|
/* UMS was only ever support on PCI devices. */
|
|
if (WARN_ON(!dev->pdev))
|
|
return -EINVAL;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
|
|
return -EINVAL;
|
|
|
|
return drm_pci_irq_by_busid(dev, p);
|
|
}
|
|
|
|
static void drm_pci_agp_init(struct drm_device *dev)
|
|
{
|
|
if (drm_core_check_feature(dev, DRIVER_USE_AGP)) {
|
|
if (pci_find_capability(dev->pdev, PCI_CAP_ID_AGP))
|
|
dev->agp = drm_agp_init(dev);
|
|
if (dev->agp) {
|
|
dev->agp->agp_mtrr = arch_phys_wc_add(
|
|
dev->agp->agp_info.aper_base,
|
|
dev->agp->agp_info.aper_size *
|
|
1024 * 1024);
|
|
}
|
|
}
|
|
}
|
|
|
|
void drm_pci_agp_destroy(struct drm_device *dev)
|
|
{
|
|
if (dev->agp) {
|
|
arch_phys_wc_del(dev->agp->agp_mtrr);
|
|
drm_legacy_agp_clear(dev);
|
|
kfree(dev->agp);
|
|
dev->agp = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_get_pci_dev - Register a PCI device with the DRM subsystem
|
|
* @pdev: PCI device
|
|
* @ent: entry from the PCI ID table that matches @pdev
|
|
* @driver: DRM device driver
|
|
*
|
|
* Attempt to gets inter module "drm" information. If we are first
|
|
* then register the character device and inter module information.
|
|
* Try and register, if we fail to register, backout previous work.
|
|
*
|
|
* NOTE: This function is deprecated, please use drm_dev_alloc() and
|
|
* drm_dev_register() instead and remove your &drm_driver.load callback.
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
struct drm_device *dev;
|
|
int ret;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
dev = drm_dev_alloc(driver, &pdev->dev);
|
|
if (IS_ERR(dev))
|
|
return PTR_ERR(dev);
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
dev->pdev = pdev;
|
|
#ifdef __alpha__
|
|
dev->hose = pdev->sysdata;
|
|
#endif
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET))
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
drm_pci_agp_init(dev);
|
|
|
|
ret = drm_dev_register(dev, ent->driver_data);
|
|
if (ret)
|
|
goto err_agp;
|
|
|
|
/* No locking needed since shadow-attach is single-threaded since it may
|
|
* only be called from the per-driver module init hook. */
|
|
if (drm_core_check_feature(dev, DRIVER_LEGACY))
|
|
list_add_tail(&dev->legacy_dev_list, &driver->legacy_dev_list);
|
|
|
|
return 0;
|
|
|
|
err_agp:
|
|
drm_pci_agp_destroy(dev);
|
|
pci_disable_device(pdev);
|
|
err_free:
|
|
drm_dev_put(dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_get_pci_dev);
|
|
|
|
/**
|
|
* drm_legacy_pci_init - shadow-attach a legacy DRM PCI driver
|
|
* @driver: DRM device driver
|
|
* @pdriver: PCI device driver
|
|
*
|
|
* This is only used by legacy dri1 drivers and deprecated.
|
|
*
|
|
* Return: 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_legacy_pci_init(struct drm_driver *driver, struct pci_driver *pdriver)
|
|
{
|
|
struct pci_dev *pdev = NULL;
|
|
const struct pci_device_id *pid;
|
|
int i;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
if (WARN_ON(!(driver->driver_features & DRIVER_LEGACY)))
|
|
return -EINVAL;
|
|
|
|
/* If not using KMS, fall back to stealth mode manual scanning. */
|
|
INIT_LIST_HEAD(&driver->legacy_dev_list);
|
|
for (i = 0; pdriver->id_table[i].vendor != 0; i++) {
|
|
pid = &pdriver->id_table[i];
|
|
|
|
/* Loop around setting up a DRM device for each PCI device
|
|
* matching our ID and device class. If we had the internal
|
|
* function that pci_get_subsys and pci_get_class used, we'd
|
|
* be able to just pass pid in instead of doing a two-stage
|
|
* thing.
|
|
*/
|
|
pdev = NULL;
|
|
while ((pdev =
|
|
pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
|
|
pid->subdevice, pdev)) != NULL) {
|
|
if ((pdev->class & pid->class_mask) != pid->class)
|
|
continue;
|
|
|
|
/* stealth mode requires a manual probe */
|
|
pci_dev_get(pdev);
|
|
drm_get_pci_dev(pdev, pid, driver);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_legacy_pci_init);
|
|
|
|
#else
|
|
|
|
void drm_pci_agp_destroy(struct drm_device *dev) {}
|
|
|
|
int drm_irq_by_busid(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* drm_legacy_pci_exit - unregister shadow-attach legacy DRM driver
|
|
* @driver: DRM device driver
|
|
* @pdriver: PCI device driver
|
|
*
|
|
* Unregister a DRM driver shadow-attached through drm_legacy_pci_init(). This
|
|
* is deprecated and only used by dri1 drivers.
|
|
*/
|
|
void drm_legacy_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver)
|
|
{
|
|
struct drm_device *dev, *tmp;
|
|
DRM_DEBUG("\n");
|
|
|
|
if (!(driver->driver_features & DRIVER_LEGACY)) {
|
|
WARN_ON(1);
|
|
} else {
|
|
list_for_each_entry_safe(dev, tmp, &driver->legacy_dev_list,
|
|
legacy_dev_list) {
|
|
list_del(&dev->legacy_dev_list);
|
|
drm_put_dev(dev);
|
|
}
|
|
}
|
|
DRM_INFO("Module unloaded\n");
|
|
}
|
|
EXPORT_SYMBOL(drm_legacy_pci_exit);
|