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From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: intel-gfx@lists.freedesktop.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Subject: [PATCH 02/17] intel-gtt: introduce pte write function for i8xx/i915/i945
Date: Tue, 14 Sep 2010 00:34:59 +0200	[thread overview]
Message-ID: <1284417314-32070-3-git-send-email-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <1284417314-32070-1-git-send-email-daniel.vetter@ffwll.ch>

And put it to use in the gtt configuration code that writes
the scratch page addr in all gtt ptes. This makes intel_i830_configure
generic, hence rename it to intel_fake_agp_configure.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/char/agp/intel-gtt.c |   41 ++++++++++++++++++++++++++++++++---------
 1 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index af920b5..59fad22 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -90,6 +90,10 @@ struct intel_gtt_driver {
 	unsigned int is_ironlake : 1;
 	/* Chipset specific GTT setup */
 	int (*setup)(void);
+	void (*write_entry)(dma_addr_t addr, unsigned int entry, unsigned int flags);
+	/* Flags is a more or less chipset specific opaque value.
+	 * For chipsets that need to support old ums (non-gem) code, this
+	 * needs to be identical to the various supported agp memory types! */
 };
 
 static struct _intel_private {
@@ -956,6 +960,23 @@ static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
 		printk(KERN_ERR "Timed out waiting for cache flush.\n");
 }
 
+static void i830_write_entry(dma_addr_t addr, unsigned int entry,
+			     unsigned int flags)
+{
+	u32 pte_flags = I810_PTE_VALID;
+	
+	switch (flags) {
+	case AGP_DCACHE_MEMORY:
+		pte_flags |= I810_PTE_LOCAL;
+		break;
+	case AGP_USER_CACHED_MEMORY:
+		pte_flags |= I830_PTE_SYSTEM_CACHED;
+		break;
+	}
+
+	writel(addr | pte_flags, intel_private.gtt + entry);
+}
+
 static void intel_enable_gtt(void)
 {
 	u32 ptetbl_addr, gma_addr;
@@ -1012,7 +1033,7 @@ static int intel_fake_agp_free_gatt_table(struct agp_bridge_data *bridge)
 	return 0;
 }
 
-static int intel_i830_configure(void)
+static int intel_fake_agp_configure(void)
 {
 	int i;
 
@@ -1020,13 +1041,12 @@ static int intel_i830_configure(void)
 
 	agp_bridge->gart_bus_addr = intel_private.gma_bus_addr;
 
-	if (agp_bridge->driver->needs_scratch_page) {
-		for (i = intel_private.base.gtt_stolen_entries;
-				i < intel_private.base.gtt_total_entries; i++) {
-			writel(agp_bridge->scratch_page, intel_private.gtt+i);
-		}
-		readl(intel_private.gtt+i-1);	/* PCI Posting. */
+	for (i = intel_private.base.gtt_stolen_entries;
+			i < intel_private.base.gtt_total_entries; i++) {
+		intel_private.driver->write_entry(intel_private.scratch_page_dma,
+						  i, 0);
 	}
+	readl(intel_private.gtt+i-1);	/* PCI Posting. */
 
 	global_cache_flush();
 
@@ -1414,7 +1434,7 @@ static const struct agp_bridge_driver intel_830_driver = {
 	.size_type		= FIXED_APER_SIZE,
 	.num_aperture_sizes	= 4,
 	.needs_scratch_page	= true,
-	.configure		= intel_i830_configure,
+	.configure		= intel_fake_agp_configure,
 	.fetch_size		= intel_fake_agp_fetch_size,
 	.cleanup		= intel_gtt_cleanup,
 	.mask_memory		= intel_i810_mask_memory,
@@ -1441,7 +1461,7 @@ static const struct agp_bridge_driver intel_915_driver = {
 	.size_type		= FIXED_APER_SIZE,
 	.num_aperture_sizes	= 4,
 	.needs_scratch_page	= true,
-	.configure		= intel_i9xx_configure,
+	.configure		= intel_fake_agp_configure,
 	.fetch_size		= intel_fake_agp_fetch_size,
 	.cleanup		= intel_gtt_cleanup,
 	.mask_memory		= intel_i810_mask_memory,
@@ -1570,10 +1590,13 @@ static const struct agp_bridge_driver intel_g33_driver = {
 static const struct intel_gtt_driver i8xx_gtt_driver = {
 	.gen = 2,
 	.setup = i830_setup,
+	.write_entry = i830_write_entry,
 };
 static const struct intel_gtt_driver i915_gtt_driver = {
 	.gen = 3,
 	.setup = i9xx_setup,
+	/* i945 is the last gpu to need phys mem (for overlay and cursors). */
+	.write_entry = i830_write_entry, 
 };
 static const struct intel_gtt_driver g33_gtt_driver = {
 	.gen = 3,
-- 
1.7.1

  parent reply	other threads:[~2010-09-13 22:33 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-13 22:34 [PATCH 00/17] gtt rework, part2 : pte handling Daniel Vetter
2010-09-13 22:34 ` [PATCH 01/17] intel-gtt: initialize our own scratch page Daniel Vetter
2010-09-13 22:34 ` Daniel Vetter [this message]
2010-09-13 22:35 ` [PATCH 03/17] intel-gtt: introduce pte write function for g33/i965/gm45 Daniel Vetter
2010-09-13 22:35 ` [PATCH 04/17] intel-gtt: introduce pte write function for gen6 Daniel Vetter
2010-09-13 22:35 ` [PATCH 05/17] intel-gtt: drop agp scratch page support stuff Daniel Vetter
2010-09-13 22:35 ` [PATCH 06/17] agp: kill agp_(map|unmap)_page Daniel Vetter
2010-09-13 22:35 ` [PATCH 07/17] intel-gtt: generic (insert|remove)_entries for i830 Daniel Vetter
2010-09-13 22:35 ` [PATCH 08/17] intel-gtt: generic (insert|remove)_entries for i915 Daniel Vetter
2010-09-13 22:35 ` [PATCH 09/17] intel-gtt: generic (insert|remove)_entries for g33/i965 Daniel Vetter
2010-09-13 22:35 ` [PATCH 10/17] intel-gtt: generic (insert|remove)_entries for sandybridge Daniel Vetter
2010-09-13 22:35 ` [PATCH 11/17] intel-gtt: kill mask_memory functions Daniel Vetter
2010-09-13 22:35 ` [PATCH 12/17] intel-gtt: move chipset flush to the gtt driver struct Daniel Vetter
2010-09-13 22:35 ` [PATCH 13/17] intel-gtt: consolidate fake_agp driver structs Daniel Vetter
2010-09-13 22:35 ` [PATCH 14/17] agp: kill agp_(unmap|map)_memory Daniel Vetter
2010-09-13 22:35 ` [PATCH 15/17] intel-gtt: clean up gtt size reporting Daniel Vetter
2010-09-13 22:35 ` [PATCH 16/17] intel-gtt: store the dma mask size in intel_gtt_driver Daniel Vetter
2010-09-13 22:35 ` [PATCH 17/17] intel-gtt add a cleanup function for chipset specific stuff Daniel Vetter

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