Commit a6c0c37d authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Linus Torvalds

radeonfb: misc cleanup of engine and dst cache handling

Fix 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: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7c08c9ae
......@@ -211,9 +211,7 @@ void radeonfb_engine_reset(struct radeonfb_info *rinfo)
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 +247,7 @@ void radeonfb_engine_reset(struct radeonfb_info *rinfo)
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 +264,18 @@ void radeonfb_engine_init (struct radeonfb_info *rinfo)
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
......
......@@ -1286,11 +1286,10 @@ static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_reg
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 radeonfb_info *rinfo, struct radeon_regs
/* 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 radeonfb_info *rinfo)
(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);
......
......@@ -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 depth)
/*
* 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");
}
......
......@@ -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
......
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