index : renesas/drm.git	android live master
	libdrm, cloned from git://anongit.freedesktop.org/mesa/drm	Laurent Pinchart

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log msg author committer range

Age	Commit message (Collapse)	Author
2004-11-06	Remove some core stuff that ended up being unnecessary.	Eric Anholt
2004-11-06	Get r128 basically working: Hook up the driver's dma ioctl, use the proper	Eric Anholt
	offset into the driver ioctl array, and don't make the ctx bitmap conditional.
2004-11-06	Move the lock/unlock ioctls to a more logical place, in drm_lock.c.	Eric Anholt
2004-11-06	Connect up r128_ioctls in driver config.	Eric Anholt
2004-11-06	Move radeon i2c include to top of file	Jon Smirl
2004-11-06	Export missing r128 ioctl symbol	Jon Smirl
2004-11-06	Fix Linux build. Why won't this complile? extern int const foo; static	Jon Smirl
	struct drm_driver driver = { .var = foo }; error says foo is not constant
2004-11-06	Hook the debug output up to a sysctl, so you can choose to enable at	Eric Anholt
	runtime.
2004-11-06	Add file missed in last commit: Commit first pieces of port to OpenBSD,	Eric Anholt
	done by Martin Lexa (martin at martinlexa dot cz). Now that we've got porting for all three major BSDs (and the fourth being very similar to FreeBSD), move the mostly-duplication drm_os_* files into drmP.h. Remove some cruft from linux heritage and from pieces of the DRM that have since been removed. Note that things are still not quite working for even FreeBSD, but these are first steps at cleanup, and just a WIP checkpoint.
2004-11-06	Commit first pieces of port to OpenBSD, done by Martin Lexa (martin at	Eric Anholt
	martinlexa dot cz). Now that we've got porting for all three major BSDs (and the fourth being very similar to FreeBSD), move the mostly-duplication drm_os_* files into drmP.h. Remove some cruft from linux heritage and from pieces of the DRM that have since been removed. Note that things are still not quite working for even FreeBSD, but these are first steps at cleanup, and just a WIP checkpoint.
2004-11-06	Remove the vestiges of the memory-debug code.	Eric Anholt
2004-11-06	Commit WIP of BSD conversion to core model. Compiles for r128, radeon, but	Eric Anholt
	doesn't run yet. Moves the ioctl definitions for these two drivers back to the shared code -- they aren't OS-specific.
2004-11-05	Move ati_pcigart shared routines into drm-core module	Jon Smirl
2004-11-03	Fixed bug in via_dma.c. The code didn't check that the lock was held by the	Thomas Hellstrom
	caller. Just that it was held.
2004-11-01	Reworked the jump-code in via_dma.c. The command regulator now seems to	Thomas Hellstrom
	pause correctly after a jump. Removed the debug message from within the interrupt handler of via_irq.c
2004-11-01	correct historic mis-attribution of copyright	Keith Whitwell
2004-10-31	Allow drivers to override reclaim_buffers in an OS-independent way by	Felix Kuehling
	passing drm_device_t* as first parameter, like in the BSD version.
2004-10-30	Some stabilizing work to the DMA ring-buffer code. Temporarily replaced the	Thomas Hellstrom
	rewind jump with a reinitialization. This makes the code stable on CLE266 and KM400.
2004-10-29	Switch SPIN_LOCK_UNLOCKED to spin_lock_init()	Jon Smirl
2004-10-29	Add include of moduleparam.h	Jon Smirl
2004-10-28	Break poll() to make it match the Xserver's broken expectations.	Jon Smirl
2004-10-28	fix for 2.4 build	Dave Airlie
2004-10-23	Round 2 of getting rid of inter_module_get()	Jon Smirl
2004-10-23	Revert symbol_get() changes from drm_drv	Jon Smirl
2004-10-23	fix inter module put/get	Dave Airlie
2004-10-23	actually 2.6.10 introduced pfn range so it should work now..	Dave Airlie
2004-10-23	fix pfn vs page for older kernels (2.6.9-rc kernels many not work..)	Dave Airlie
2004-10-23	Apply radeon r300 microcode patch to non-core	Dave Airlie
2004-10-23	Prepare to eliminate inter_module_get("agp")	Jon Smirl
2004-10-22	Bring in patch from kernel for remap_pfn_range	Jon Smirl
2004-10-21	Fix up the radeon i2c error handing	Jon Smirl
2004-10-20	Don't release an i2c channel that has not initialized correctly	Jon Smirl
2004-10-20	Switch linux-core from using dev->pdev->driver->name to	Jon Smirl
	dev->driver->pci_driver.name. This avoids the stealth mode case where pdev is pointing to the wrong driver or no driver.
2004-10-20	Fix dd vs di version typo in drm_setversion	Jon Smirl
2004-10-19	Add a protective check against a possible buffer overflow	Jon Smirl
2004-10-19	Fix missing I2C busses to be non-fatal error.	Jon Smirl
2004-10-19	drm-core, Clean up bug error path on stealth mode exit	Jon Smirl
2004-10-18	Update Doxygen configuration & comments.	Jose Fonseca
2004-10-16	Fixed off by one errors in clipping.	Ville Syrjala
2004-10-16	Fixed bad formatting.	Ville Syrjala
2004-10-15	Remove drm_init.c	Jon Smirl
2004-10-15	Move drm_cpu_valid out of drm_init. drm_init is empty now.	Jon Smirl
2004-10-15	Switch linux-core over to 2.6 parameter model to enable debug use	Jon Smirl
	drm_debug=1
2004-10-13	Add a poll function that alternates between zero and normal poll return to	Jon Smirl
	bring DRM into conformance with normal poll().
2004-10-12	Via updates. Fixed unlikely but possible uint32_t overflow in ring-buffer	Thomas Hellstrom
	code. bumped patchlevel.
2004-10-12	Breakout heads into their own data structures.	Jon Smirl
2004-10-10	Rename fn_tbl to driver. Core driver now uses pci_driver name which	Jon Smirl
	reflects the personality name.
2004-10-10	Vladimir requested support so we can at least load r300 microcode for	Dave Airlie
	helping 2D operations. Ups radeon to version 1.12.0, Vladimir, you might want to add any extra pciids... Approved-by: Dave Airlie <airlied@linux.ie>
2004-10-10	Forgot to add the new Makefile	Jon Smirl
2004-10-10	Make the test programs build	Jon Smirl

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generated by cgit v1.2.3 (git 2.25.1) at 2025-12-07 10:24:36 +0000

/**
 * \file drm_vm.h
 * Memory mapping for DRM
 * 
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 * \author Gareth Hughes <gareth@valinux.com>
 */

/*
 * Created: Mon Jan  4 08:58:31 1999 by faith@valinux.com
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * 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
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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 "drmP.h"


/**
 * \c nopage method for AGP virtual memory.
 *
 * \param vma virtual memory area.
 * \param address access address.
 * \return pointer to the page structure.
 * 
 * Find the right map and if it's AGP memory find the real physical page to
 * map, get the page, increment the use count and return it.
 */
static __inline__ struct page *DRM(do_vm_nopage)(struct vm_area_struct *vma,
						 unsigned long address)
{
#if __OS_HAS_AGP
	drm_file_t *priv  = vma->vm_file->private_data;
	drm_device_t *dev = priv->dev;
	drm_map_t *map    = NULL;
	drm_map_list_t  *r_list;
	struct list_head *list;

	/*
         * Find the right map
         */
	if (!(dev->agp && DRIVER_USE_AGP)) goto vm_nopage_error;

	if(!dev->agp || !dev->agp->cant_use_aperture) goto vm_nopage_error;

	list_for_each(list, &dev->maplist->head) {
		r_list = list_entry(list, drm_map_list_t, head);
		map = r_list->map;
		if (!map) continue;
		if (map->offset == VM_OFFSET(vma)) break;
	}

	if (map && map->type == _DRM_AGP) {
		unsigned long offset = address - vma->vm_start;
		unsigned long baddr = VM_OFFSET(vma) + offset;
		struct drm_agp_mem *agpmem;
		struct page *page;

#ifdef __alpha__
		/*
                 * Adjust to a bus-relative address
                 */
		baddr -= dev->hose->mem_space->start;
#endif

		/*
                 * It's AGP memory - find the real physical page to map
                 */
		for(agpmem = dev->agp->memory; agpmem; agpmem = agpmem->next) {
			if (agpmem->bound <= baddr &&
			    agpmem->bound + agpmem->pages * PAGE_SIZE > baddr) 
				break;
		}

		if (!agpmem) goto vm_nopage_error;

		/*
                 * Get the page, inc the use count, and return it
                 */
		offset = (baddr - agpmem->bound) >> PAGE_SHIFT;
		page = virt_to_page(__va(agpmem->memory->memory[offset]));
		get_page(page);

#if 0 
		/* page_count() not defined everywhere */
		DRM_DEBUG("baddr = 0x%lx page = 0x%p, offset = 0x%lx, count=%d\n",
			  baddr, __va(agpmem->memory->memory[offset]), offset,
			  page_count(page));
#endif

		return page;
        }
vm_nopage_error:
#endif /* __OS_HAS_AGP */

	return NOPAGE_SIGBUS;		/* Disallow mremap */
}

/**
 * \c nopage method for shared virtual memory.
 *
 * \param vma virtual memory area.
 * \param address access address.
 * \return pointer to the page structure.
 * 
 * Get the the mapping, find the real physical page to map, get the page, and
 * return it.
 */
static __inline__ struct page *DRM(do_vm_shm_nopage)(struct vm_area_struct *vma,
						     unsigned long address)
{
	drm_map_t	 *map	 = (drm_map_t *)vma->vm_private_data;
	unsigned long	 offset;
	unsigned long	 i;
	struct page	 *page;

	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
	if (!map)    		   return NOPAGE_OOM;  /* Nothing allocated */

	offset	 = address - vma->vm_start;
	i = (unsigned long)map->handle + offset;
	page = vmalloc_to_page((void *)i);
	if (!page)
		return NOPAGE_OOM;
	get_page(page);

	DRM_DEBUG("shm_nopage 0x%lx\n", address);
	return page;
}


/**
 * \c close method for shared virtual memory.
 * 
 * \param vma virtual memory area.
 * 
 * Deletes map information if we are the last
 * person to close a mapping and it's not in the global maplist.
 */
void DRM(vm_shm_close)(struct vm_area_struct *vma)
{
	drm_file_t	*priv	= vma->vm_file->private_data;
	drm_device_t	*dev	= priv->dev;
	drm_vma_entry_t *pt, *prev, *next;
	drm_map_t *map;
	drm_map_list_t *r_list;
	struct list_head *list;
	int found_maps = 0;

	DRM_DEBUG("0x%08lx,0x%08lx\n",
		  vma->vm_start, vma->vm_end - vma->vm_start);
	atomic_dec(&dev->vma_count);

	map = vma->vm_private_data;

	down(&dev->struct_sem);
	for (pt = dev->vmalist, prev = NULL; pt; pt = next) {
		next = pt->next;
		if (pt->vma->vm_private_data == map) found_maps++;
		if (pt->vma == vma) {
			if (prev) {
				prev->next = pt->next;
			} else {
				dev->vmalist = pt->next;
			}
			DRM(free)(pt, sizeof(*pt), DRM_MEM_VMAS);
		} else {
			prev = pt;
		}
	}
	/* We were the only map that was found */
	if(found_maps == 1 &&
	   map->flags & _DRM_REMOVABLE) {
		/* Check to see if we are in the maplist, if we are not, then
		 * we delete this mappings information.
		 */
		found_maps = 0;
		list = &dev->maplist->head;
		list_for_each(list, &dev->maplist->head) {
			r_list = list_entry(list, drm_map_list_t, head);
			if (r_list->map == map) found_maps++;
		}

		if(!found_maps) {
			switch (map->type) {
			case _DRM_REGISTERS:
			case _DRM_FRAME_BUFFER:
#if __OS_HAS_MTRR
			  if (drm_core_check_feature(dev, DRIVER_USE_MTRR) && map->mtrr >= 0) {
					int retcode;
					retcode = mtrr_del(map->mtrr,
							   map->offset,
							   map->size);
					DRM_DEBUG("mtrr_del = %d\n", retcode);
				}
#endif
				DRM(ioremapfree)(map->handle, map->size, dev);
				break;
			case _DRM_SHM:
				vfree(map->handle);
				break;
			case _DRM_AGP:
			case _DRM_SCATTER_GATHER:
				break;
			}