2005-04-16 16:20:36 -06:00
|
|
|
/* drm_pci.h -- PCI DMA memory management wrappers for DRM -*- linux-c -*- */
|
|
|
|
/**
|
|
|
|
* \file drm_pci.c
|
|
|
|
* \brief Functions and ioctls to manage PCI memory
|
|
|
|
*
|
|
|
|
* \warning These interfaces aren't stable yet.
|
|
|
|
*
|
|
|
|
* \todo Implement the remaining ioctl's for the PCI pools.
|
|
|
|
* \todo The wrappers here are so thin that they would be better off inlined..
|
|
|
|
*
|
2007-10-19 15:21:04 -06:00
|
|
|
* \author José Fonseca <jrfonseca@tungstengraphics.com>
|
2005-04-16 16:20:36 -06:00
|
|
|
* \author Leif Delgass <ldelgass@retinalburn.net>
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
2007-10-19 15:21:04 -06:00
|
|
|
* Copyright 2003 José Fonseca.
|
2005-04-16 16:20:36 -06:00
|
|
|
* Copyright 2003 Leif Delgass.
|
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|
|
* All Rights Reserved.
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|
*
|
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|
|
* Permission is hereby granted, free of charge, to any person obtaining a
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|
* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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|
* The above copyright notice and this permission notice (including the next
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|
* paragraph) shall be included in all copies or substantial portions of the
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|
|
* Software.
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|
*
|
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|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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|
#include <linux/pci.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
|
|
|
#include <linux/slab.h>
|
2006-04-05 02:12:18 -06:00
|
|
|
#include <linux/dma-mapping.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
#include "drmP.h"
|
|
|
|
|
|
|
|
/**********************************************************************/
|
|
|
|
/** \name PCI memory */
|
|
|
|
/*@{*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* \brief Allocate a PCI consistent memory block, for DMA.
|
|
|
|
*/
|
2010-01-04 20:25:05 -07:00
|
|
|
drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t align)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-07-09 23:38:56 -06:00
|
|
|
drm_dma_handle_t *dmah;
|
2006-03-19 00:56:12 -07:00
|
|
|
#if 1
|
|
|
|
unsigned long addr;
|
|
|
|
size_t sz;
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
2005-07-09 23:38:56 -06:00
|
|
|
dmah = kmalloc(sizeof(drm_dma_handle_t), GFP_KERNEL);
|
|
|
|
if (!dmah)
|
|
|
|
return NULL;
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-07-09 23:38:56 -06:00
|
|
|
dmah->size = size;
|
2006-03-19 00:56:12 -07:00
|
|
|
dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, &dmah->busaddr, GFP_KERNEL | __GFP_COMP);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-07-09 23:38:56 -06:00
|
|
|
if (dmah->vaddr == NULL) {
|
|
|
|
kfree(dmah);
|
2005-04-16 16:20:36 -06:00
|
|
|
return NULL;
|
2005-07-09 23:38:56 -06:00
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-07-09 23:38:56 -06:00
|
|
|
memset(dmah->vaddr, 0, size);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-03-19 00:56:12 -07:00
|
|
|
/* 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(addr));
|
|
|
|
}
|
|
|
|
|
2005-07-09 23:38:56 -06:00
|
|
|
return dmah;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
EXPORT_SYMBOL(drm_pci_alloc);
|
|
|
|
|
|
|
|
/**
|
2006-03-19 00:56:12 -07:00
|
|
|
* \brief Free a PCI consistent memory block without freeing its descriptor.
|
2005-07-09 23:38:56 -06:00
|
|
|
*
|
|
|
|
* This function is for internal use in the Linux-specific DRM core code.
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
2007-07-10 23:53:27 -06:00
|
|
|
void __drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2006-03-19 00:56:12 -07:00
|
|
|
#if 1
|
|
|
|
unsigned long addr;
|
|
|
|
size_t sz;
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2009-03-24 13:23:04 -06:00
|
|
|
if (dmah->vaddr) {
|
2006-03-19 00:56:12 -07:00
|
|
|
/* 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(addr));
|
|
|
|
}
|
|
|
|
dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr,
|
|
|
|
dmah->busaddr);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
}
|
2005-07-09 23:38:56 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* \brief Free a PCI consistent memory block
|
|
|
|
*/
|
2007-07-10 23:53:27 -06:00
|
|
|
void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah)
|
2005-07-09 23:38:56 -06:00
|
|
|
{
|
|
|
|
__drm_pci_free(dev, dmah);
|
|
|
|
kfree(dmah);
|
|
|
|
}
|
2005-09-24 22:28:13 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
EXPORT_SYMBOL(drm_pci_free);
|
|
|
|
|
2010-05-27 13:40:25 -06:00
|
|
|
#ifdef CONFIG_PCI
|
|
|
|
/**
|
|
|
|
* Register.
|
|
|
|
*
|
|
|
|
* \param pdev - PCI device structure
|
|
|
|
* \param ent entry from the PCI ID table with device type flags
|
|
|
|
* \return zero on success or a negative number on failure.
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
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 = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
|
|
if (!dev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
ret = pci_enable_device(pdev);
|
|
|
|
if (ret)
|
|
|
|
goto err_g1;
|
|
|
|
|
|
|
|
pci_set_master(pdev);
|
|
|
|
|
|
|
|
dev->pdev = pdev;
|
|
|
|
dev->dev = &pdev->dev;
|
|
|
|
|
|
|
|
dev->pci_device = pdev->device;
|
|
|
|
dev->pci_vendor = pdev->vendor;
|
|
|
|
|
|
|
|
#ifdef __alpha__
|
|
|
|
dev->hose = pdev->sysdata;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if ((ret = drm_fill_in_dev(dev, ent, driver))) {
|
|
|
|
printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
|
|
|
|
goto err_g2;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
|
|
|
|
if (ret)
|
|
|
|
goto err_g2;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
|
|
|
|
goto err_g3;
|
|
|
|
|
|
|
|
if (dev->driver->load) {
|
|
|
|
ret = dev->driver->load(dev, ent->driver_data);
|
|
|
|
if (ret)
|
|
|
|
goto err_g4;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* setup the grouping for the legacy output */
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
|
|
ret = drm_mode_group_init_legacy_group(dev,
|
|
|
|
&dev->primary->mode_group);
|
|
|
|
if (ret)
|
|
|
|
goto err_g4;
|
|
|
|
}
|
|
|
|
|
|
|
|
list_add_tail(&dev->driver_item, &driver->device_list);
|
|
|
|
|
|
|
|
DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
|
|
|
|
driver->name, driver->major, driver->minor, driver->patchlevel,
|
|
|
|
driver->date, pci_name(pdev), dev->primary->index);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_g4:
|
|
|
|
drm_put_minor(&dev->primary);
|
|
|
|
err_g3:
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET))
|
|
|
|
drm_put_minor(&dev->control);
|
|
|
|
err_g2:
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
err_g1:
|
|
|
|
kfree(dev);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_get_pci_dev);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* PCI device initialization. Called via drm_init at module load time,
|
|
|
|
*
|
|
|
|
* \return zero on success or a negative number on failure.
|
|
|
|
*
|
|
|
|
* Initializes a drm_device structures,registering the
|
|
|
|
* stubs and initializing the AGP device.
|
|
|
|
*
|
|
|
|
* Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
|
|
|
|
* after the initialization for driver customization.
|
|
|
|
*/
|
|
|
|
int drm_pci_init(struct drm_driver *driver)
|
|
|
|
{
|
|
|
|
struct pci_dev *pdev = NULL;
|
|
|
|
const struct pci_device_id *pid;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (driver->driver_features & DRIVER_MODESET)
|
|
|
|
return pci_register_driver(&driver->pci_driver);
|
|
|
|
|
|
|
|
/* If not using KMS, fall back to stealth mode manual scanning. */
|
|
|
|
for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
|
|
|
|
pid = &driver->pci_driver.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;
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
int drm_pci_init(struct drm_driver *driver)
|
|
|
|
{
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
/*@}*/
|