From: Alex Deucher <alexdeucher@gmail.com>
Date: Tue, 19 Jan 2010 17:38:48 +0000 (-0500)
Subject: drm/radeon/kms/atom: fix some parser bugs
X-Git-Tag: v2.6.33-rc6~27^2~6^2~14
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9f53e7931610cbd1715fd2d2c0f9a853e17f02d8;p=platform%2Fkernel%2Flinux-exynos.git

drm/radeon/kms/atom: fix some parser bugs

- add support for inline src params
- fix shift_left/shift_right and shl/shr ops
  shift_* ops use inline src params, shl/r use full params
- fix mask op (uses inline params)

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
---

diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 388140a7..9a33781 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -385,6 +385,32 @@ static uint32_t atom_get_src(atom_exec_context *ctx, uint8_t attr, int *ptr)
 	return atom_get_src_int(ctx, attr, ptr, NULL, 1);
 }
 
+static uint32_t atom_get_src_direct(atom_exec_context *ctx, uint8_t align, int *ptr)
+{
+	uint32_t val = 0xCDCDCDCD;
+
+	switch (align) {
+	case ATOM_SRC_DWORD:
+		val = U32(*ptr);
+		(*ptr) += 4;
+		break;
+	case ATOM_SRC_WORD0:
+	case ATOM_SRC_WORD8:
+	case ATOM_SRC_WORD16:
+		val = U16(*ptr);
+		(*ptr) += 2;
+		break;
+	case ATOM_SRC_BYTE0:
+	case ATOM_SRC_BYTE8:
+	case ATOM_SRC_BYTE16:
+	case ATOM_SRC_BYTE24:
+		val = U8(*ptr);
+		(*ptr)++;
+		break;
+	}
+	return val;
+}
+
 static uint32_t atom_get_dst(atom_exec_context *ctx, int arg, uint8_t attr,
 			     int *ptr, uint32_t *saved, int print)
 {
@@ -677,9 +703,9 @@ static void atom_op_mask(atom_exec_context *ctx, int *ptr, int arg)
 	SDEBUG("   dst: ");
 	dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
 	SDEBUG("   src1: ");
-	src1 = atom_get_src(ctx, attr, ptr);
+	src1 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
 	SDEBUG("   src2: ");
-	src2 = atom_get_src(ctx, attr, ptr);
+	src2 = atom_get_src_direct(ctx, ((attr >> 3) & 7), ptr);
 	dst &= src1;
 	dst |= src2;
 	SDEBUG("   dst: ");
@@ -809,6 +835,38 @@ static void atom_op_setregblock(atom_exec_context *ctx, int *ptr, int arg)
 	SDEBUG("   base: 0x%04X\n", ctx->ctx->reg_block);
 }
 
+static void atom_op_shift_left(atom_exec_context *ctx, int *ptr, int arg)
+{
+	uint8_t attr = U8((*ptr)++), shift;
+	uint32_t saved, dst;
+	int dptr = *ptr;
+	attr &= 0x38;
+	attr |= atom_def_dst[attr >> 3] << 6;
+	SDEBUG("   dst: ");
+	dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
+	shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
+	SDEBUG("   shift: %d\n", shift);
+	dst <<= shift;
+	SDEBUG("   dst: ");
+	atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
+}
+
+static void atom_op_shift_right(atom_exec_context *ctx, int *ptr, int arg)
+{
+	uint8_t attr = U8((*ptr)++), shift;
+	uint32_t saved, dst;
+	int dptr = *ptr;
+	attr &= 0x38;
+	attr |= atom_def_dst[attr >> 3] << 6;
+	SDEBUG("   dst: ");
+	dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
+	shift = atom_get_src_direct(ctx, ATOM_SRC_BYTE0, ptr);
+	SDEBUG("   shift: %d\n", shift);
+	dst >>= shift;
+	SDEBUG("   dst: ");
+	atom_put_dst(ctx, arg, attr, &dptr, dst, saved);
+}
+
 static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
 {
 	uint8_t attr = U8((*ptr)++), shift;
@@ -818,7 +876,7 @@ static void atom_op_shl(atom_exec_context *ctx, int *ptr, int arg)
 	attr |= atom_def_dst[attr >> 3] << 6;
 	SDEBUG("   dst: ");
 	dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
-	shift = U8((*ptr)++);
+	shift = atom_get_src(ctx, attr, ptr);
 	SDEBUG("   shift: %d\n", shift);
 	dst <<= shift;
 	SDEBUG("   dst: ");
@@ -834,7 +892,7 @@ static void atom_op_shr(atom_exec_context *ctx, int *ptr, int arg)
 	attr |= atom_def_dst[attr >> 3] << 6;
 	SDEBUG("   dst: ");
 	dst = atom_get_dst(ctx, arg, attr, ptr, &saved, 1);
-	shift = U8((*ptr)++);
+	shift = atom_get_src(ctx, attr, ptr);
 	SDEBUG("   shift: %d\n", shift);
 	dst >>= shift;
 	SDEBUG("   dst: ");
@@ -937,18 +995,18 @@ static struct {
 	atom_op_or, ATOM_ARG_FB}, {
 	atom_op_or, ATOM_ARG_PLL}, {
 	atom_op_or, ATOM_ARG_MC}, {
-	atom_op_shl, ATOM_ARG_REG}, {
-	atom_op_shl, ATOM_ARG_PS}, {
-	atom_op_shl, ATOM_ARG_WS}, {
-	atom_op_shl, ATOM_ARG_FB}, {
-	atom_op_shl, ATOM_ARG_PLL}, {
-	atom_op_shl, ATOM_ARG_MC}, {
-	atom_op_shr, ATOM_ARG_REG}, {
-	atom_op_shr, ATOM_ARG_PS}, {
-	atom_op_shr, ATOM_ARG_WS}, {
-	atom_op_shr, ATOM_ARG_FB}, {
-	atom_op_shr, ATOM_ARG_PLL}, {
-	atom_op_shr, ATOM_ARG_MC}, {
+	atom_op_shift_left, ATOM_ARG_REG}, {
+	atom_op_shift_left, ATOM_ARG_PS}, {
+	atom_op_shift_left, ATOM_ARG_WS}, {
+	atom_op_shift_left, ATOM_ARG_FB}, {
+	atom_op_shift_left, ATOM_ARG_PLL}, {
+	atom_op_shift_left, ATOM_ARG_MC}, {
+	atom_op_shift_right, ATOM_ARG_REG}, {
+	atom_op_shift_right, ATOM_ARG_PS}, {
+	atom_op_shift_right, ATOM_ARG_WS}, {
+	atom_op_shift_right, ATOM_ARG_FB}, {
+	atom_op_shift_right, ATOM_ARG_PLL}, {
+	atom_op_shift_right, ATOM_ARG_MC}, {
 	atom_op_mul, ATOM_ARG_REG}, {
 	atom_op_mul, ATOM_ARG_PS}, {
 	atom_op_mul, ATOM_ARG_WS}, {