Commit 0496cf5a authored by Alan Cox's avatar Alan Cox Committed by Greg Kroah-Hartman
Browse files

gma500: nuke the last bits of TTM code 



We don't seem to need this for our task.

Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 4e1d2fae

drivers/staging/gma500/psb_drv.c

+0 −6
Original line number Diff line number Diff line
@@ -409,8 +409,6 @@ static int psb_do_init(struct drm_device *dev) 
	struct psb_gtt *pg = dev_priv->pg;



	uint32_t stolen_gtt;

	uint32_t tt_start;

	uint32_t tt_pages;



	int ret = -ENOMEM;
@@ -449,10 +447,6 @@ static int psb_do_init(struct drm_device *dev) 


	spin_lock_init(&dev_priv->irqmask_lock);



	tt_pages = (pg->gatt_pages < PSB_TT_PRIV0_PLIMIT) ?

	    pg->gatt_pages : PSB_TT_PRIV0_PLIMIT;

	tt_start = dev_priv->gatt_free_offset - pg->mmu_gatt_start;

	tt_pages -= tt_start >> PAGE_SHIFT;

	/* FIXME: can we kill ta_mem_size ? */

	dev_priv->sizes.ta_mem_size = 0;

drivers/staging/gma500/psb_gtt.c

+19 −43
Original line number Diff line number Diff line
@@ -138,8 +138,6 @@ static void psb_gtt_remove(struct drm_device *dev, struct gtt_range *r) 
 *

 *	Pin and build an in kernel list of the pages that back our GEM object.

 *	While we hold this the pages cannot be swapped out

 *

 *	FIXME: Do we need to cache flush when we update the GTT

 */

static int psb_gtt_attach_pages(struct gtt_range *gt)

{
@@ -185,8 +183,6 @@ err: 
 *	Undo the effect of psb_gtt_attach_pages. At this point the pages

 *	must have been removed from the GTT as they could now be paged out

 *	and move bus address.

 *

 *	FIXME: Do we need to cache flush when we update the GTT

 */

static void psb_gtt_detach_pages(struct gtt_range *gt)

{
@@ -194,7 +190,6 @@ static void psb_gtt_detach_pages(struct gtt_range *gt) 
	for (i = 0; i < gt->npage; i++) {

		/* FIXME: do we need to force dirty */

		set_page_dirty(gt->pages[i]);

		/* Undo the reference we took when populating the table */

		page_cache_release(gt->pages[i]);

	}

	kfree(gt->pages);
@@ -384,7 +379,6 @@ void psb_gtt_takedown(struct drm_device *dev) 
{

	struct drm_psb_private *dev_priv = dev->dev_private;



	/* FIXME: iounmap dev_priv->vram_addr etc */

	if (dev_priv->gtt_map) {

		iounmap(dev_priv->gtt_map);

		dev_priv->gtt_map = NULL;
@@ -395,6 +389,8 @@ void psb_gtt_takedown(struct drm_device *dev) 
		PSB_WVDC32(dev_priv->pge_ctl, PSB_PGETBL_CTL);

		(void) PSB_RVDC32(PSB_PGETBL_CTL);

	}

	if (dev_priv->vram_addr)

		iounmap(dev_priv->gtt_map);

	kfree(dev_priv->pg);

	dev_priv->pg = NULL;

}
@@ -407,8 +403,6 @@ int psb_gtt_init(struct drm_device *dev, int resume) 
	unsigned i, num_pages;

	unsigned pfn_base;

	uint32_t vram_pages;

	uint32_t tt_pages;

	uint32_t *ttm_gtt_map;

	uint32_t dvmt_mode = 0;

	struct psb_gtt *pg;
@@ -421,6 +415,7 @@ int psb_gtt_init(struct drm_device *dev, int resume) 
	if (pg == NULL)

		return -ENOMEM;



        /* Enable the GTT */

	pci_read_config_word(dev->pdev, PSB_GMCH_CTRL, &dev_priv->gmch_ctrl);

	pci_write_config_word(dev->pdev, PSB_GMCH_CTRL,

			      dev_priv->gmch_ctrl | _PSB_GMCH_ENABLED);
@@ -431,30 +426,26 @@ int psb_gtt_init(struct drm_device *dev, int resume) 


	/* The root resource we allocate address space from */

	dev_priv->gtt_mem = &dev->pdev->resource[PSB_GATT_RESOURCE];



	dev_priv->gtt_initialized = 1;



	pg->gtt_phys_start = dev_priv->pge_ctl & PAGE_MASK;



	pg->gatt_start = pci_resource_start(dev->pdev, PSB_GATT_RESOURCE);

	/* fix me: video mmu has hw bug to access 0x0D0000000,

	 * then make gatt start at 0x0e000,0000 */

	/* 

	 *	FIXME: video mmu has hw bug to access 0x0D0000000,

	 *	then make gatt start at 0x0e000,0000

	 */

	pg->mmu_gatt_start = 0xE0000000;



	pg->gtt_start = pci_resource_start(dev->pdev, PSB_GTT_RESOURCE);

	gtt_pages =

	    pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT;

	pg->gatt_pages = pci_resource_len(dev->pdev, PSB_GATT_RESOURCE)

	    >> PAGE_SHIFT;

	gtt_pages = pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT;

	pg->gatt_pages = pci_resource_len(dev->pdev, PSB_GATT_RESOURCE) >> PAGE_SHIFT;



	pci_read_config_dword(dev->pdev, PSB_BSM, &dev_priv->stolen_base);

	vram_stolen_size = pg->gtt_phys_start - dev_priv->stolen_base - PAGE_SIZE;



	stolen_size = vram_stolen_size;



	printk(KERN_INFO"GMMADR(region 0) start: 0x%08x (%dM).\n",

		pg->gatt_start, pg->gatt_pages/256);

	printk(KERN_INFO"GTTADR(region 3) start: 0x%08x (can map %dM RAM), and actual RAM base 0x%08x.\n",

		pg->gtt_start, gtt_pages * 4, pg->gtt_phys_start);

	printk(KERN_INFO "Stolen memory information\n");

	printk(KERN_INFO "       base in RAM: 0x%x\n", dev_priv->stolen_base);

	printk(KERN_INFO "       size: %luK, calculated by (GTT RAM base) - (Stolen base), seems wrong\n",
@@ -473,8 +464,11 @@ int psb_gtt_init(struct drm_device *dev, int resume) 
	pg->gtt_pages = gtt_pages;

	pg->stolen_size = stolen_size;

	dev_priv->vram_stolen_size = vram_stolen_size;

	dev_priv->gtt_map =

	    ioremap_nocache(pg->gtt_phys_start, gtt_pages << PAGE_SHIFT);



	/*

	 *	Map the GTT and the stolen memory area

	 */

	dev_priv->gtt_map = ioremap_nocache(pg->gtt_phys_start, gtt_pages << PAGE_SHIFT);

	if (!dev_priv->gtt_map) {

		DRM_ERROR("Failure to map gtt.\n");

		ret = -ENOMEM;
@@ -488,15 +482,8 @@ int psb_gtt_init(struct drm_device *dev, int resume) 
		goto out_err;

	}



	DRM_DEBUG("gma500: vram kernel virtual address %p\n", dev_priv->vram_addr);



	tt_pages = (pg->gatt_pages < PSB_TT_PRIV0_PLIMIT) ?

		(pg->gatt_pages) : PSB_TT_PRIV0_PLIMIT;



	ttm_gtt_map = dev_priv->gtt_map + tt_pages / 2;



	/*

	 * insert vram stolen pages.

	 * Insert vram stolen pages into the GTT

	 */



	pfn_base = dev_priv->stolen_base >> PAGE_SHIFT;
@@ -509,26 +496,15 @@ int psb_gtt_init(struct drm_device *dev, int resume) 
	}



	/*

	 * Init rest of gtt managed by IMG.

	 */

	pfn_base = page_to_pfn(dev_priv->scratch_page);

	pte = psb_gtt_mask_pte(pfn_base, 0);

	for (; i < tt_pages / 2 - 1; ++i)

		iowrite32(pte, dev_priv->gtt_map + i);



	/*

	 * Init rest of gtt managed by TTM.

	 * Init rest of GTT to the scratch page to avoid accidents or scribbles

	 */



	pfn_base = page_to_pfn(dev_priv->scratch_page);

	pte = psb_gtt_mask_pte(pfn_base, 0);

	PSB_DEBUG_INIT("Initializing the rest of a total "

		       "of %d gtt pages.\n", pg->gatt_pages);

	for (; i < gtt_pages; ++i)

		iowrite32(pte, dev_priv->gtt_map + i);



	for (; i < pg->gatt_pages - tt_pages / 2; ++i)

		iowrite32(pte, ttm_gtt_map + i);

	(void) ioread32(dev_priv->gtt_map + i - 1);



	return 0;



out_err:

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