* [PATCH 1/2] radeonfb: Misc cleanup of engine and dst cache handling
@ 2008-08-11 0:33 Benjamin Herrenschmidt
0 siblings, 0 replies; only message in thread
From: Benjamin Herrenschmidt @ 2008-08-11 0:33 UTC (permalink / raw)
To: linux-fbdev-devel; +Cc: davem
This patch fixes a couple of incomplete tests of the chip
families in the engine init/reset code and proper
initialization of the destination cache mode. The result
should better match what the latest X radeon driver does.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
drivers/video/aty/radeon_accel.c | 22 +++++++++++++---------
drivers/video/aty/radeon_base.c | 13 +++++--------
drivers/video/aty/radeonfb.h | 33 ++++++++++++++++++++-------------
include/video/radeon.h | 5 ++++-
4 files changed, 42 insertions(+), 31 deletions(-)
--- linux-work.orig/drivers/video/aty/radeon_accel.c 2008-08-08 09:56:03.000000000 +1000
+++ linux-work/drivers/video/aty/radeon_accel.c 2008-08-08 09:56:40.000000000 +1000
@@ -211,9 +222,7 @@ void radeonfb_engine_reset(struct radeon
host_path_cntl = INREG(HOST_PATH_CNTL);
rbbm_soft_reset = INREG(RBBM_SOFT_RESET);
- if (rinfo->family == CHIP_FAMILY_R300 ||
- rinfo->family == CHIP_FAMILY_R350 ||
- rinfo->family == CHIP_FAMILY_RV350) {
+ if (IS_R300_VARIANT(rinfo)) {
u32 tmp;
OUTREG(RBBM_SOFT_RESET, (rbbm_soft_reset |
@@ -249,9 +258,7 @@ void radeonfb_engine_reset(struct radeon
INREG(HOST_PATH_CNTL);
OUTREG(HOST_PATH_CNTL, host_path_cntl);
- if (rinfo->family != CHIP_FAMILY_R300 &&
- rinfo->family != CHIP_FAMILY_R350 &&
- rinfo->family != CHIP_FAMILY_RV350)
+ if (!IS_R300_VARIANT(rinfo))
OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset);
OUTREG(CLOCK_CNTL_INDEX, clock_cntl_index);
@@ -268,10 +275,18 @@ void radeonfb_engine_init (struct radeon
radeonfb_engine_reset(rinfo);
radeon_fifo_wait (1);
- if ((rinfo->family != CHIP_FAMILY_R300) &&
- (rinfo->family != CHIP_FAMILY_R350) &&
- (rinfo->family != CHIP_FAMILY_RV350))
+ if (IS_R300_VARIANT(rinfo)) {
+ OUTREG(RB2D_DSTCACHE_MODE, INREG(RB2D_DSTCACHE_MODE) |
+ RB2D_DC_AUTOFLUSH_ENABLE |
+ RB2D_DC_DC_DISABLE_IGNORE_PE);
+ } else {
+ /* This needs to be double checked with ATI. Latest X driver
+ * completely "forgets" to set this register on < r3xx, and
+ * we used to just write 0 there... I'll keep the 0 and update
+ * that when we have sorted things out on X side.
+ */
OUTREG(RB2D_DSTCACHE_MODE, 0);
+ }
radeon_fifo_wait (3);
/* We re-read MC_FB_LOCATION from card as it can have been
Index: linux-work/include/video/radeon.h
===================================================================
--- linux-work.orig/include/video/radeon.h 2008-08-08 09:56:03.000000000 +1000
+++ linux-work/include/video/radeon.h 2008-08-08 09:56:14.000000000 +1000
@@ -386,7 +386,7 @@
#define SC_BOTTOM_RIGHT 0x16F0
#define SRC_SC_BOTTOM_RIGHT 0x16F4
#define RB2D_DSTCACHE_MODE 0x3428
-#define RB2D_DSTCACHE_CTLSTAT 0x342C
+#define RB2D_DSTCACHE_CTLSTAT_broken 0x342C /* do not use */
#define LVDS_GEN_CNTL 0x02d0
#define LVDS_PLL_CNTL 0x02d4
#define FP2_GEN_CNTL 0x0288
@@ -532,6 +532,9 @@
#define RB2D_DC_FLUSH_ALL (RB2D_DC_FLUSH_2D | RB2D_DC_FREE_2D)
#define RB2D_DC_BUSY (1 << 31)
+/* DSTCACHE_MODE bits constants */
+#define RB2D_DC_AUTOFLUSH_ENABLE (1 << 8)
+#define RB2D_DC_DC_DISABLE_IGNORE_PE (1 << 17)
/* CRTC_GEN_CNTL bit constants */
#define CRTC_DBL_SCAN_EN 0x00000001
Index: linux-work/drivers/video/aty/radeonfb.h
===================================================================
--- linux-work.orig/drivers/video/aty/radeonfb.h 2008-08-08 09:56:03.000000000 +1000
+++ linux-work/drivers/video/aty/radeonfb.h 2008-08-08 09:56:14.000000000 +1000
@@ -53,6 +53,7 @@ enum radeon_family {
CHIP_FAMILY_RV380, /* RV370/RV380/M22/M24 */
CHIP_FAMILY_R420, /* R420/R423/M18 */
CHIP_FAMILY_RC410,
+ CHIP_FAMILY_RS400,
CHIP_FAMILY_RS480,
CHIP_FAMILY_LAST,
};
@@ -533,33 +534,39 @@ static inline u32 radeon_get_dstbpp(u16
/*
* 2D Engine helper routines
*/
-static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
+
+static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
{
int i;
- /* initiate flush */
- OUTREGP(RB2D_DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
- ~RB2D_DC_FLUSH_ALL);
-
- for (i=0; i < 2000000; i++) {
- if (!(INREG(RB2D_DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
+ for (i=0; i<2000000; i++) {
+ if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
return;
udelay(1);
}
- printk(KERN_ERR "radeonfb: Flush Timeout !\n");
+ printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
}
-
-static inline void _radeon_fifo_wait(struct radeonfb_info *rinfo, int entries)
+static inline void radeon_engine_flush (struct radeonfb_info *rinfo)
{
int i;
- for (i=0; i<2000000; i++) {
- if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
+ /* Initiate flush */
+ OUTREGP(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
+ ~RB2D_DC_FLUSH_ALL);
+
+ /* Ensure FIFO is empty, ie, make sure the flush commands
+ * has reached the cache
+ */
+ _radeon_fifo_wait (rinfo, 64);
+
+ /* Wait for the flush to complete */
+ for (i=0; i < 2000000; i++) {
+ if (!(INREG(DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
return;
udelay(1);
}
- printk(KERN_ERR "radeonfb: FIFO Timeout !\n");
+ printk(KERN_ERR "radeonfb: Flush Timeout !\n");
}
Index: linux-work/drivers/video/aty/radeon_base.c
===================================================================
--- linux-work.orig/drivers/video/aty/radeon_base.c 2008-08-08 09:56:03.000000000 +1000
+++ linux-work/drivers/video/aty/radeon_base.c 2008-08-08 09:56:14.000000000 +1000
@@ -1286,11 +1286,10 @@ static void radeon_write_pll_regs(struct
radeon_pll_errata_after_data(rinfo);
/* Set PPLL ref. div */
- if (rinfo->family == CHIP_FAMILY_R300 ||
+ if (IS_R300_VARIANT(rinfo) ||
rinfo->family == CHIP_FAMILY_RS300 ||
- rinfo->family == CHIP_FAMILY_R350 ||
- rinfo->family == CHIP_FAMILY_RV350 ||
- rinfo->family == CHIP_FAMILY_RV380 ) {
+ rinfo->family == CHIP_FAMILY_RS400 ||
+ rinfo->family == CHIP_FAMILY_RS480) {
if (mode->ppll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
/* When restoring console mode, use saved PPLL_REF_DIV
* setting.
@@ -1461,10 +1460,7 @@ static void radeon_calc_pll_regs(struct
/* Not all chip revs have the same format for this register,
* extract the source selection
*/
- if (rinfo->family == CHIP_FAMILY_R200 ||
- rinfo->family == CHIP_FAMILY_R300 ||
- rinfo->family == CHIP_FAMILY_R350 ||
- rinfo->family == CHIP_FAMILY_RV350) {
+ if (rinfo->family == CHIP_FAMILY_R200 || IS_R300_VARIANT(rinfo)) {
source = (fp2_gen_cntl >> 10) & 0x3;
/* sourced from transform unit, check for transform unit
* own source
@@ -2005,6 +2001,7 @@ static void radeon_identify_vram(struct
(rinfo->family == CHIP_FAMILY_RS200) ||
(rinfo->family == CHIP_FAMILY_RS300) ||
(rinfo->family == CHIP_FAMILY_RC410) ||
+ (rinfo->family == CHIP_FAMILY_RS400) ||
(rinfo->family == CHIP_FAMILY_RS480) ) {
u32 tom = INREG(NB_TOM);
tmp = ((((tom >> 16) - (tom & 0xffff) + 1) << 6) * 1024);
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