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authorDave Airlie <airlied@starflyer.(none)>2006-01-02 00:11:44 -0500
committerDave Airlie <airlied@linux.ie>2006-01-02 00:11:44 -0500
commit3528af1b189d0fbb4c7a3f121f46d9987b9af5b6 (patch)
tree565940d5d0ac96c063f15cba5a049103e2993466 /drivers/char
parent952d751a140e961f7ac67f743cf94d1a37c736e8 (diff)
drm: fix a LOR issue on FreeBSD for savage driver
Correct a LOR issue on FreeBSD by allocating temporary space and doing a single DRM_COPY_FROM_USER rather than DRM_VERIFYAREA_READ followed by tons of DRM_COPY_FROM_USER_UNCHECKED. I don't like the look of the temporary space allocation, but I like the simplification in the rest of the file. Tested with glxgears, tuxracer, and q3 on a savage4. From: Eric Anholt <anholt@freebsd.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/drm/savage_drv.h23
-rw-r--r--drivers/char/drm/savage_state.c324
2 files changed, 171 insertions, 176 deletions
diff --git a/drivers/char/drm/savage_drv.h b/drivers/char/drm/savage_drv.h
index 2f73558fb9cf..dd46cb85439c 100644
--- a/drivers/char/drm/savage_drv.h
+++ b/drivers/char/drm/savage_drv.h
@@ -1,5 +1,5 @@
1/* savage_drv.h -- Private header for the savage driver 1/* savage_drv.h -- Private header for the savage driver */
2 * 2/*
3 * Copyright 2004 Felix Kuehling 3 * Copyright 2004 Felix Kuehling
4 * All Rights Reserved. 4 * All Rights Reserved.
5 * 5 *
@@ -192,7 +192,7 @@ typedef struct drm_savage_private {
192 /* Err, there is a macro wait_event in include/linux/wait.h. 192 /* Err, there is a macro wait_event in include/linux/wait.h.
193 * Avoid unwanted macro expansion. */ 193 * Avoid unwanted macro expansion. */
194 void (*emit_clip_rect) (struct drm_savage_private * dev_priv, 194 void (*emit_clip_rect) (struct drm_savage_private * dev_priv,
195 drm_clip_rect_t * pbox); 195 const drm_clip_rect_t * pbox);
196 void (*dma_flush) (struct drm_savage_private * dev_priv); 196 void (*dma_flush) (struct drm_savage_private * dev_priv);
197} drm_savage_private_t; 197} drm_savage_private_t;
198 198
@@ -217,9 +217,9 @@ extern void savage_reclaim_buffers(drm_device_t * dev, DRMFILE filp);
217 217
218/* state functions */ 218/* state functions */
219extern void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv, 219extern void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
220 drm_clip_rect_t * pbox); 220 const drm_clip_rect_t * pbox);
221extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv, 221extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
222 drm_clip_rect_t * pbox); 222 const drm_clip_rect_t * pbox);
223 223
224#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */ 224#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */
225#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */ 225#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */
@@ -502,15 +502,6 @@ extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
502 502
503#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val) 503#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val)
504 504
505#define BCI_COPY_FROM_USER(src,n) do { \
506 unsigned int i; \
507 for (i = 0; i < n; ++i) { \
508 uint32_t val; \
509 DRM_GET_USER_UNCHECKED(val, &((uint32_t*)(src))[i]); \
510 BCI_WRITE(val); \
511 } \
512} while(0)
513
514/* 505/*
515 * command DMA support 506 * command DMA support
516 */ 507 */
@@ -536,8 +527,8 @@ extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
536 527
537#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val) 528#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val)
538 529
539#define DMA_COPY_FROM_USER(src,n) do { \ 530#define DMA_COPY(src, n) do { \
540 DRM_COPY_FROM_USER_UNCHECKED(dma_ptr, (src), (n)*4); \ 531 memcpy(dma_ptr, (src), (n)*4); \
541 dma_ptr += n; \ 532 dma_ptr += n; \
542} while(0) 533} while(0)
543 534
diff --git a/drivers/char/drm/savage_state.c b/drivers/char/drm/savage_state.c
index e87a5d59b99c..ef2581d16146 100644
--- a/drivers/char/drm/savage_state.c
+++ b/drivers/char/drm/savage_state.c
@@ -27,7 +27,7 @@
27#include "savage_drv.h" 27#include "savage_drv.h"
28 28
29void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv, 29void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
30 drm_clip_rect_t * pbox) 30 const drm_clip_rect_t * pbox)
31{ 31{
32 uint32_t scstart = dev_priv->state.s3d.new_scstart; 32 uint32_t scstart = dev_priv->state.s3d.new_scstart;
33 uint32_t scend = dev_priv->state.s3d.new_scend; 33 uint32_t scend = dev_priv->state.s3d.new_scend;
@@ -53,7 +53,7 @@ void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
53} 53}
54 54
55void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv, 55void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
56 drm_clip_rect_t * pbox) 56 const drm_clip_rect_t * pbox)
57{ 57{
58 uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0; 58 uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0;
59 uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1; 59 uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1;
@@ -115,18 +115,19 @@ static int savage_verify_texaddr(drm_savage_private_t * dev_priv, int unit,
115 115
116#define SAVE_STATE(reg,where) \ 116#define SAVE_STATE(reg,where) \
117 if(start <= reg && start+count > reg) \ 117 if(start <= reg && start+count > reg) \
118 DRM_GET_USER_UNCHECKED(dev_priv->state.where, &regs[reg-start]) 118 dev_priv->state.where = regs[reg - start]
119#define SAVE_STATE_MASK(reg,where,mask) do { \ 119#define SAVE_STATE_MASK(reg,where,mask) do { \
120 if(start <= reg && start+count > reg) { \ 120 if(start <= reg && start+count > reg) { \
121 uint32_t tmp; \ 121 uint32_t tmp; \
122 DRM_GET_USER_UNCHECKED(tmp, &regs[reg-start]); \ 122 tmp = regs[reg - start]; \
123 dev_priv->state.where = (tmp & (mask)) | \ 123 dev_priv->state.where = (tmp & (mask)) | \
124 (dev_priv->state.where & ~(mask)); \ 124 (dev_priv->state.where & ~(mask)); \
125 } \ 125 } \
126} while (0) 126} while (0)
127
127static int savage_verify_state_s3d(drm_savage_private_t * dev_priv, 128static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
128 unsigned int start, unsigned int count, 129 unsigned int start, unsigned int count,
129 const uint32_t __user * regs) 130 const uint32_t *regs)
130{ 131{
131 if (start < SAVAGE_TEXPALADDR_S3D || 132 if (start < SAVAGE_TEXPALADDR_S3D ||
132 start + count - 1 > SAVAGE_DESTTEXRWWATERMARK_S3D) { 133 start + count - 1 > SAVAGE_DESTTEXRWWATERMARK_S3D) {
@@ -148,8 +149,7 @@ static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
148 SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr); 149 SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr);
149 if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK) 150 if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK)
150 return savage_verify_texaddr(dev_priv, 0, 151 return savage_verify_texaddr(dev_priv, 0,
151 dev_priv->state.s3d. 152 dev_priv->state.s3d.texaddr);
152 texaddr);
153 } 153 }
154 154
155 return 0; 155 return 0;
@@ -157,7 +157,7 @@ static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
157 157
158static int savage_verify_state_s4(drm_savage_private_t * dev_priv, 158static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
159 unsigned int start, unsigned int count, 159 unsigned int start, unsigned int count,
160 const uint32_t __user * regs) 160 const uint32_t *regs)
161{ 161{
162 int ret = 0; 162 int ret = 0;
163 163
@@ -174,19 +174,18 @@ static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
174 ~SAVAGE_SCISSOR_MASK_S4); 174 ~SAVAGE_SCISSOR_MASK_S4);
175 175
176 /* if any texture regs were changed ... */ 176 /* if any texture regs were changed ... */
177 if (start <= SAVAGE_TEXDESCR_S4 && start + count > SAVAGE_TEXPALADDR_S4) { 177 if (start <= SAVAGE_TEXDESCR_S4 &&
178 start + count > SAVAGE_TEXPALADDR_S4) {
178 /* ... check texture state */ 179 /* ... check texture state */
179 SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr); 180 SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr);
180 SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0); 181 SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0);
181 SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1); 182 SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1);
182 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK) 183 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK)
183 ret |= 184 ret |= savage_verify_texaddr(dev_priv, 0,
184 savage_verify_texaddr(dev_priv, 0, 185 dev_priv->state.s4.texaddr0);
185 dev_priv->state.s4.texaddr0);
186 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK) 186 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK)
187 ret |= 187 ret |= savage_verify_texaddr(dev_priv, 1,
188 savage_verify_texaddr(dev_priv, 1, 188 dev_priv->state.s4.texaddr1);
189 dev_priv->state.s4.texaddr1);
190 } 189 }
191 190
192 return ret; 191 return ret;
@@ -197,7 +196,7 @@ static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
197 196
198static int savage_dispatch_state(drm_savage_private_t * dev_priv, 197static int savage_dispatch_state(drm_savage_private_t * dev_priv,
199 const drm_savage_cmd_header_t * cmd_header, 198 const drm_savage_cmd_header_t * cmd_header,
200 const uint32_t __user * regs) 199 const uint32_t *regs)
201{ 200{
202 unsigned int count = cmd_header->state.count; 201 unsigned int count = cmd_header->state.count;
203 unsigned int start = cmd_header->state.start; 202 unsigned int start = cmd_header->state.start;
@@ -209,9 +208,6 @@ static int savage_dispatch_state(drm_savage_private_t * dev_priv,
209 if (!count) 208 if (!count)
210 return 0; 209 return 0;
211 210
212 if (DRM_VERIFYAREA_READ(regs, count * 4))
213 return DRM_ERR(EFAULT);
214
215 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { 211 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
216 ret = savage_verify_state_s3d(dev_priv, start, count, regs); 212 ret = savage_verify_state_s3d(dev_priv, start, count, regs);
217 if (ret != 0) 213 if (ret != 0)
@@ -236,8 +232,8 @@ static int savage_dispatch_state(drm_savage_private_t * dev_priv,
236 /* scissor regs are emitted in savage_dispatch_draw */ 232 /* scissor regs are emitted in savage_dispatch_draw */
237 if (start < SAVAGE_DRAWCTRL0_S4) { 233 if (start < SAVAGE_DRAWCTRL0_S4) {
238 if (start + count > SAVAGE_DRAWCTRL1_S4 + 1) 234 if (start + count > SAVAGE_DRAWCTRL1_S4 + 1)
239 count2 = 235 count2 = count -
240 count - (SAVAGE_DRAWCTRL1_S4 + 1 - start); 236 (SAVAGE_DRAWCTRL1_S4 + 1 - start);
241 if (start + count > SAVAGE_DRAWCTRL0_S4) 237 if (start + count > SAVAGE_DRAWCTRL0_S4)
242 count = SAVAGE_DRAWCTRL0_S4 - start; 238 count = SAVAGE_DRAWCTRL0_S4 - start;
243 } else if (start <= SAVAGE_DRAWCTRL1_S4) { 239 } else if (start <= SAVAGE_DRAWCTRL1_S4) {
@@ -263,7 +259,7 @@ static int savage_dispatch_state(drm_savage_private_t * dev_priv,
263 while (count > 0) { 259 while (count > 0) {
264 unsigned int n = count < 255 ? count : 255; 260 unsigned int n = count < 255 ? count : 255;
265 DMA_SET_REGISTERS(start, n); 261 DMA_SET_REGISTERS(start, n);
266 DMA_COPY_FROM_USER(regs, n); 262 DMA_COPY(regs, n);
267 count -= n; 263 count -= n;
268 start += n; 264 start += n;
269 regs += n; 265 regs += n;
@@ -421,8 +417,8 @@ static int savage_dispatch_dma_prim(drm_savage_private_t * dev_priv,
421 417
422static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv, 418static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
423 const drm_savage_cmd_header_t * cmd_header, 419 const drm_savage_cmd_header_t * cmd_header,
424 const uint32_t __user * vtxbuf, 420 const uint32_t *vtxbuf, unsigned int vb_size,
425 unsigned int vb_size, unsigned int vb_stride) 421 unsigned int vb_stride)
426{ 422{
427 unsigned char reorder = 0; 423 unsigned char reorder = 0;
428 unsigned int prim = cmd_header->prim.prim; 424 unsigned int prim = cmd_header->prim.prim;
@@ -507,8 +503,7 @@ static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
507 503
508 for (i = start; i < start + count; ++i) { 504 for (i = start; i < start + count; ++i) {
509 unsigned int j = i + reorder[i % 3]; 505 unsigned int j = i + reorder[i % 3];
510 DMA_COPY_FROM_USER(&vtxbuf[vb_stride * j], 506 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
511 vtx_size);
512 } 507 }
513 508
514 DMA_COMMIT(); 509 DMA_COMMIT();
@@ -517,13 +512,12 @@ static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
517 DMA_DRAW_PRIMITIVE(count, prim, skip); 512 DMA_DRAW_PRIMITIVE(count, prim, skip);
518 513
519 if (vb_stride == vtx_size) { 514 if (vb_stride == vtx_size) {
520 DMA_COPY_FROM_USER(&vtxbuf[vb_stride * start], 515 DMA_COPY(&vtxbuf[vb_stride * start],
521 vtx_size * count); 516 vtx_size * count);
522 } else { 517 } else {
523 for (i = start; i < start + count; ++i) { 518 for (i = start; i < start + count; ++i) {
524 DMA_COPY_FROM_USER(&vtxbuf 519 DMA_COPY(&vtxbuf [vb_stride * i],
525 [vb_stride * i], 520 vtx_size);
526 vtx_size);
527 } 521 }
528 } 522 }
529 523
@@ -541,7 +535,7 @@ static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
541 535
542static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv, 536static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
543 const drm_savage_cmd_header_t * cmd_header, 537 const drm_savage_cmd_header_t * cmd_header,
544 const uint16_t __user * usr_idx, 538 const uint16_t *idx,
545 const drm_buf_t * dmabuf) 539 const drm_buf_t * dmabuf)
546{ 540{
547 unsigned char reorder = 0; 541 unsigned char reorder = 0;
@@ -628,11 +622,8 @@ static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
628 while (n != 0) { 622 while (n != 0) {
629 /* Can emit up to 255 indices (85 triangles) at once. */ 623 /* Can emit up to 255 indices (85 triangles) at once. */
630 unsigned int count = n > 255 ? 255 : n; 624 unsigned int count = n > 255 ? 255 : n;
631 /* Is it ok to allocate 510 bytes on the stack in an ioctl? */
632 uint16_t idx[255];
633 625
634 /* Copy and check indices */ 626 /* check indices */
635 DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count * 2);
636 for (i = 0; i < count; ++i) { 627 for (i = 0; i < count; ++i) {
637 if (idx[i] > dmabuf->total / 32) { 628 if (idx[i] > dmabuf->total / 32) {
638 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n", 629 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
@@ -652,8 +643,8 @@ static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
652 643
653 for (i = 1; i + 1 < count; i += 2) 644 for (i = 1; i + 1 < count; i += 2)
654 BCI_WRITE(idx[i + reorder[i % 3]] | 645 BCI_WRITE(idx[i + reorder[i % 3]] |
655 (idx[i + 1 + reorder[(i + 1) % 3]] << 646 (idx[i + 1 +
656 16)); 647 reorder[(i + 1) % 3]] << 16));
657 if (i < count) 648 if (i < count)
658 BCI_WRITE(idx[i + reorder[i % 3]]); 649 BCI_WRITE(idx[i + reorder[i % 3]]);
659 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) { 650 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
@@ -674,7 +665,7 @@ static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
674 BCI_WRITE(idx[i]); 665 BCI_WRITE(idx[i]);
675 } 666 }
676 667
677 usr_idx += count; 668 idx += count;
678 n -= count; 669 n -= count;
679 670
680 prim |= BCI_CMD_DRAW_CONT; 671 prim |= BCI_CMD_DRAW_CONT;
@@ -685,8 +676,8 @@ static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
685 676
686static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv, 677static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
687 const drm_savage_cmd_header_t * cmd_header, 678 const drm_savage_cmd_header_t * cmd_header,
688 const uint16_t __user * usr_idx, 679 const uint16_t *idx,
689 const uint32_t __user * vtxbuf, 680 const uint32_t *vtxbuf,
690 unsigned int vb_size, unsigned int vb_stride) 681 unsigned int vb_size, unsigned int vb_stride)
691{ 682{
692 unsigned char reorder = 0; 683 unsigned char reorder = 0;
@@ -751,11 +742,8 @@ static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
751 while (n != 0) { 742 while (n != 0) {
752 /* Can emit up to 255 vertices (85 triangles) at once. */ 743 /* Can emit up to 255 vertices (85 triangles) at once. */
753 unsigned int count = n > 255 ? 255 : n; 744 unsigned int count = n > 255 ? 255 : n;
754 /* Is it ok to allocate 510 bytes on the stack in an ioctl? */ 745
755 uint16_t idx[255]; 746 /* Check indices */
756
757 /* Copy and check indices */
758 DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count * 2);
759 for (i = 0; i < count; ++i) { 747 for (i = 0; i < count; ++i) {
760 if (idx[i] > vb_size / (vb_stride * 4)) { 748 if (idx[i] > vb_size / (vb_stride * 4)) {
761 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n", 749 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
@@ -775,8 +763,7 @@ static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
775 763
776 for (i = 0; i < count; ++i) { 764 for (i = 0; i < count; ++i) {
777 unsigned int j = idx[i + reorder[i % 3]]; 765 unsigned int j = idx[i + reorder[i % 3]];
778 DMA_COPY_FROM_USER(&vtxbuf[vb_stride * j], 766 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
779 vtx_size);
780 } 767 }
781 768
782 DMA_COMMIT(); 769 DMA_COMMIT();
@@ -786,14 +773,13 @@ static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
786 773
787 for (i = 0; i < count; ++i) { 774 for (i = 0; i < count; ++i) {
788 unsigned int j = idx[i]; 775 unsigned int j = idx[i];
789 DMA_COPY_FROM_USER(&vtxbuf[vb_stride * j], 776 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
790 vtx_size);
791 } 777 }
792 778
793 DMA_COMMIT(); 779 DMA_COMMIT();
794 } 780 }
795 781
796 usr_idx += count; 782 idx += count;
797 n -= count; 783 n -= count;
798 784
799 prim |= BCI_CMD_DRAW_CONT; 785 prim |= BCI_CMD_DRAW_CONT;
@@ -804,11 +790,11 @@ static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
804 790
805static int savage_dispatch_clear(drm_savage_private_t * dev_priv, 791static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
806 const drm_savage_cmd_header_t * cmd_header, 792 const drm_savage_cmd_header_t * cmd_header,
807 const drm_savage_cmd_header_t __user * data, 793 const drm_savage_cmd_header_t *data,
808 unsigned int nbox, 794 unsigned int nbox,
809 const drm_clip_rect_t __user * usr_boxes) 795 const drm_clip_rect_t *boxes)
810{ 796{
811 unsigned int flags = cmd_header->clear0.flags, mask, value; 797 unsigned int flags = cmd_header->clear0.flags;
812 unsigned int clear_cmd; 798 unsigned int clear_cmd;
813 unsigned int i, nbufs; 799 unsigned int i, nbufs;
814 DMA_LOCALS; 800 DMA_LOCALS;
@@ -816,9 +802,6 @@ static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
816 if (nbox == 0) 802 if (nbox == 0)
817 return 0; 803 return 0;
818 804
819 DRM_GET_USER_UNCHECKED(mask, &data->clear1.mask);
820 DRM_GET_USER_UNCHECKED(value, &data->clear1.value);
821
822 clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP | 805 clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
823 BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW; 806 BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW;
824 BCI_CMD_SET_ROP(clear_cmd, 0xCC); 807 BCI_CMD_SET_ROP(clear_cmd, 0xCC);
@@ -828,21 +811,19 @@ static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
828 if (nbufs == 0) 811 if (nbufs == 0)
829 return 0; 812 return 0;
830 813
831 if (mask != 0xffffffff) { 814 if (data->clear1.mask != 0xffffffff) {
832 /* set mask */ 815 /* set mask */
833 BEGIN_DMA(2); 816 BEGIN_DMA(2);
834 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1); 817 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
835 DMA_WRITE(mask); 818 DMA_WRITE(data->clear1.mask);
836 DMA_COMMIT(); 819 DMA_COMMIT();
837 } 820 }
838 for (i = 0; i < nbox; ++i) { 821 for (i = 0; i < nbox; ++i) {
839 drm_clip_rect_t box;
840 unsigned int x, y, w, h; 822 unsigned int x, y, w, h;
841 unsigned int buf; 823 unsigned int buf;
842 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box)); 824 x = boxes[i].x1, y = boxes[i].y1;
843 x = box.x1, y = box.y1; 825 w = boxes[i].x2 - boxes[i].x1;
844 w = box.x2 - box.x1; 826 h = boxes[i].y2 - boxes[i].y1;
845 h = box.y2 - box.y1;
846 BEGIN_DMA(nbufs * 6); 827 BEGIN_DMA(nbufs * 6);
847 for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) { 828 for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) {
848 if (!(flags & buf)) 829 if (!(flags & buf))
@@ -862,13 +843,13 @@ static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
862 DMA_WRITE(dev_priv->depth_bd); 843 DMA_WRITE(dev_priv->depth_bd);
863 break; 844 break;
864 } 845 }
865 DMA_WRITE(value); 846 DMA_WRITE(data->clear1.value);
866 DMA_WRITE(BCI_X_Y(x, y)); 847 DMA_WRITE(BCI_X_Y(x, y));
867 DMA_WRITE(BCI_W_H(w, h)); 848 DMA_WRITE(BCI_W_H(w, h));
868 } 849 }
869 DMA_COMMIT(); 850 DMA_COMMIT();
870 } 851 }
871 if (mask != 0xffffffff) { 852 if (data->clear1.mask != 0xffffffff) {
872 /* reset mask */ 853 /* reset mask */
873 BEGIN_DMA(2); 854 BEGIN_DMA(2);
874 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1); 855 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
@@ -880,8 +861,7 @@ static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
880} 861}
881 862
882static int savage_dispatch_swap(drm_savage_private_t * dev_priv, 863static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
883 unsigned int nbox, 864 unsigned int nbox, const drm_clip_rect_t *boxes)
884 const drm_clip_rect_t __user * usr_boxes)
885{ 865{
886 unsigned int swap_cmd; 866 unsigned int swap_cmd;
887 unsigned int i; 867 unsigned int i;
@@ -895,16 +875,14 @@ static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
895 BCI_CMD_SET_ROP(swap_cmd, 0xCC); 875 BCI_CMD_SET_ROP(swap_cmd, 0xCC);
896 876
897 for (i = 0; i < nbox; ++i) { 877 for (i = 0; i < nbox; ++i) {
898 drm_clip_rect_t box;
899 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box));
900
901 BEGIN_DMA(6); 878 BEGIN_DMA(6);
902 DMA_WRITE(swap_cmd); 879 DMA_WRITE(swap_cmd);
903 DMA_WRITE(dev_priv->back_offset); 880 DMA_WRITE(dev_priv->back_offset);
904 DMA_WRITE(dev_priv->back_bd); 881 DMA_WRITE(dev_priv->back_bd);
905 DMA_WRITE(BCI_X_Y(box.x1, box.y1)); 882 DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
906 DMA_WRITE(BCI_X_Y(box.x1, box.y1)); 883 DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
907 DMA_WRITE(BCI_W_H(box.x2 - box.x1, box.y2 - box.y1)); 884 DMA_WRITE(BCI_W_H(boxes[i].x2 - boxes[i].x1,
885 boxes[i].y2 - boxes[i].y1));
908 DMA_COMMIT(); 886 DMA_COMMIT();
909 } 887 }
910 888
@@ -912,68 +890,52 @@ static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
912} 890}
913 891
914static int savage_dispatch_draw(drm_savage_private_t * dev_priv, 892static int savage_dispatch_draw(drm_savage_private_t * dev_priv,
915 const drm_savage_cmd_header_t __user * start, 893 const drm_savage_cmd_header_t *start,
916 const drm_savage_cmd_header_t __user * end, 894 const drm_savage_cmd_header_t *end,
917 const drm_buf_t * dmabuf, 895 const drm_buf_t * dmabuf,
918 const unsigned int __user * usr_vtxbuf, 896 const unsigned int *vtxbuf,
919 unsigned int vb_size, unsigned int vb_stride, 897 unsigned int vb_size, unsigned int vb_stride,
920 unsigned int nbox, 898 unsigned int nbox,
921 const drm_clip_rect_t __user * usr_boxes) 899 const drm_clip_rect_t *boxes)
922{ 900{
923 unsigned int i, j; 901 unsigned int i, j;
924 int ret; 902 int ret;
925 903
926 for (i = 0; i < nbox; ++i) { 904 for (i = 0; i < nbox; ++i) {
927 drm_clip_rect_t box; 905 const drm_savage_cmd_header_t *cmdbuf;
928 const drm_savage_cmd_header_t __user *usr_cmdbuf; 906 dev_priv->emit_clip_rect(dev_priv, &boxes[i]);
929 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box));
930 dev_priv->emit_clip_rect(dev_priv, &box);
931 907
932 usr_cmdbuf = start; 908 cmdbuf = start;
933 while (usr_cmdbuf < end) { 909 while (cmdbuf < end) {
934 drm_savage_cmd_header_t cmd_header; 910 drm_savage_cmd_header_t cmd_header;
935 DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf, 911 cmd_header = *cmdbuf;
936 sizeof(cmd_header)); 912 cmdbuf++;
937 usr_cmdbuf++;
938 switch (cmd_header.cmd.cmd) { 913 switch (cmd_header.cmd.cmd) {
939 case SAVAGE_CMD_DMA_PRIM: 914 case SAVAGE_CMD_DMA_PRIM:
940 ret = 915 ret = savage_dispatch_dma_prim(
941 savage_dispatch_dma_prim(dev_priv, 916 dev_priv, &cmd_header, dmabuf);
942 &cmd_header,
943 dmabuf);
944 break; 917 break;
945 case SAVAGE_CMD_VB_PRIM: 918 case SAVAGE_CMD_VB_PRIM:
946 ret = 919 ret = savage_dispatch_vb_prim(
947 savage_dispatch_vb_prim(dev_priv, 920 dev_priv, &cmd_header,
948 &cmd_header, 921 vtxbuf, vb_size, vb_stride);
949 (const uint32_t
950 __user *)
951 usr_vtxbuf, vb_size,
952 vb_stride);
953 break; 922 break;
954 case SAVAGE_CMD_DMA_IDX: 923 case SAVAGE_CMD_DMA_IDX:
955 j = (cmd_header.idx.count + 3) / 4; 924 j = (cmd_header.idx.count + 3) / 4;
956 /* j was check in savage_bci_cmdbuf */ 925 /* j was check in savage_bci_cmdbuf */
957 ret = 926 ret = savage_dispatch_dma_idx(dev_priv,
958 savage_dispatch_dma_idx(dev_priv, 927 &cmd_header, (const uint16_t *)cmdbuf,
959 &cmd_header, 928 dmabuf);
960 (const uint16_t 929 cmdbuf += j;
961 __user *)
962 usr_cmdbuf, dmabuf);
963 usr_cmdbuf += j;
964 break; 930 break;
965 case SAVAGE_CMD_VB_IDX: 931 case SAVAGE_CMD_VB_IDX:
966 j = (cmd_header.idx.count + 3) / 4; 932 j = (cmd_header.idx.count + 3) / 4;
967 /* j was check in savage_bci_cmdbuf */ 933 /* j was check in savage_bci_cmdbuf */
968 ret = 934 ret = savage_dispatch_vb_idx(dev_priv,
969 savage_dispatch_vb_idx(dev_priv, 935 &cmd_header, (const uint16_t *)cmdbuf,
970 &cmd_header, 936 (const uint32_t *)vtxbuf, vb_size,
971 (const uint16_t 937 vb_stride);
972 __user *)usr_cmdbuf, 938 cmdbuf += j;
973 (const uint32_t
974 __user *)usr_vtxbuf,
975 vb_size, vb_stride);
976 usr_cmdbuf += j;
977 break; 939 break;
978 default: 940 default:
979 /* What's the best return code? EFAULT? */ 941 /* What's the best return code? EFAULT? */
@@ -998,10 +960,10 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
998 drm_device_dma_t *dma = dev->dma; 960 drm_device_dma_t *dma = dev->dma;
999 drm_buf_t *dmabuf; 961 drm_buf_t *dmabuf;
1000 drm_savage_cmdbuf_t cmdbuf; 962 drm_savage_cmdbuf_t cmdbuf;
1001 drm_savage_cmd_header_t __user *usr_cmdbuf; 963 drm_savage_cmd_header_t *kcmd_addr = NULL;
1002 drm_savage_cmd_header_t __user *first_draw_cmd; 964 drm_savage_cmd_header_t *first_draw_cmd;
1003 unsigned int __user *usr_vtxbuf; 965 unsigned int *kvb_addr = NULL;
1004 drm_clip_rect_t __user *usr_boxes; 966 drm_clip_rect_t *kbox_addr = NULL;
1005 unsigned int i, j; 967 unsigned int i, j;
1006 int ret = 0; 968 int ret = 0;
1007 969
@@ -1024,15 +986,53 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1024 dmabuf = NULL; 986 dmabuf = NULL;
1025 } 987 }
1026 988
1027 usr_cmdbuf = (drm_savage_cmd_header_t __user *) cmdbuf.cmd_addr; 989 /* Copy the user buffers into kernel temporary areas. This hasn't been
1028 usr_vtxbuf = (unsigned int __user *)cmdbuf.vb_addr; 990 * a performance loss compared to VERIFYAREA_READ/
1029 usr_boxes = (drm_clip_rect_t __user *) cmdbuf.box_addr; 991 * COPY_FROM_USER_UNCHECKED when done in other drivers, and is correct
1030 if ((cmdbuf.size && DRM_VERIFYAREA_READ(usr_cmdbuf, cmdbuf.size * 8)) || 992 * for locking on FreeBSD.
1031 (cmdbuf.vb_size && DRM_VERIFYAREA_READ(usr_vtxbuf, cmdbuf.vb_size)) 993 */
1032 || (cmdbuf.nbox 994 if (cmdbuf.size) {
1033 && DRM_VERIFYAREA_READ(usr_boxes, 995 kcmd_addr = drm_alloc(cmdbuf.size * 8, DRM_MEM_DRIVER);
1034 cmdbuf.nbox * sizeof(drm_clip_rect_t)))) 996 if (kcmd_addr == NULL)
1035 return DRM_ERR(EFAULT); 997 return ENOMEM;
998
999 if (DRM_COPY_FROM_USER(kcmd_addr, cmdbuf.cmd_addr,
1000 cmdbuf.size * 8))
1001 {
1002 drm_free(kcmd_addr, cmdbuf.size * 8, DRM_MEM_DRIVER);
1003 return DRM_ERR(EFAULT);
1004 }
1005 cmdbuf.cmd_addr = kcmd_addr;
1006 }
1007 if (cmdbuf.vb_size) {
1008 kvb_addr = drm_alloc(cmdbuf.vb_size, DRM_MEM_DRIVER);
1009 if (kvb_addr == NULL) {
1010 ret = DRM_ERR(ENOMEM);
1011 goto done;
1012 }
1013
1014 if (DRM_COPY_FROM_USER(kvb_addr, cmdbuf.vb_addr,
1015 cmdbuf.vb_size)) {
1016 ret = DRM_ERR(EFAULT);
1017 goto done;
1018 }
1019 cmdbuf.vb_addr = kvb_addr;
1020 }
1021 if (cmdbuf.nbox) {
1022 kbox_addr = drm_alloc(cmdbuf.nbox * sizeof(drm_clip_rect_t),
1023 DRM_MEM_DRIVER);
1024 if (kbox_addr == NULL) {
1025 ret = DRM_ERR(ENOMEM);
1026 goto done;
1027 }
1028
1029 if (DRM_COPY_FROM_USER(kbox_addr, cmdbuf.box_addr,
1030 cmdbuf.nbox * sizeof(drm_clip_rect_t))) {
1031 ret = DRM_ERR(EFAULT);
1032 goto done;
1033 }
1034 cmdbuf.box_addr = kbox_addr;
1035 }
1036 1036
1037 /* Make sure writes to DMA buffers are finished before sending 1037 /* Make sure writes to DMA buffers are finished before sending
1038 * DMA commands to the graphics hardware. */ 1038 * DMA commands to the graphics hardware. */
@@ -1046,9 +1046,8 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1046 first_draw_cmd = NULL; 1046 first_draw_cmd = NULL;
1047 while (i < cmdbuf.size) { 1047 while (i < cmdbuf.size) {
1048 drm_savage_cmd_header_t cmd_header; 1048 drm_savage_cmd_header_t cmd_header;
1049 DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf, 1049 cmd_header = *(drm_savage_cmd_header_t *)cmdbuf.cmd_addr;
1050 sizeof(cmd_header)); 1050 cmdbuf.cmd_addr++;
1051 usr_cmdbuf++;
1052 i++; 1051 i++;
1053 1052
1054 /* Group drawing commands with same state to minimize 1053 /* Group drawing commands with same state to minimize
@@ -1068,21 +1067,18 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1068 case SAVAGE_CMD_DMA_PRIM: 1067 case SAVAGE_CMD_DMA_PRIM:
1069 case SAVAGE_CMD_VB_PRIM: 1068 case SAVAGE_CMD_VB_PRIM:
1070 if (!first_draw_cmd) 1069 if (!first_draw_cmd)
1071 first_draw_cmd = usr_cmdbuf - 1; 1070 first_draw_cmd = cmdbuf.cmd_addr - 1;
1072 usr_cmdbuf += j; 1071 cmdbuf.cmd_addr += j;
1073 i += j; 1072 i += j;
1074 break; 1073 break;
1075 default: 1074 default:
1076 if (first_draw_cmd) { 1075 if (first_draw_cmd) {
1077 ret = 1076 ret = savage_dispatch_draw(
1078 savage_dispatch_draw(dev_priv, 1077 dev_priv, first_draw_cmd,
1079 first_draw_cmd, 1078 cmdbuf.cmd_addr - 1,
1080 usr_cmdbuf - 1, dmabuf, 1079 dmabuf, cmdbuf.vb_addr, cmdbuf.vb_size,
1081 usr_vtxbuf, 1080 cmdbuf.vb_stride,
1082 cmdbuf.vb_size, 1081 cmdbuf.nbox, cmdbuf.box_addr);
1083 cmdbuf.vb_stride,
1084 cmdbuf.nbox,
1085 usr_boxes);
1086 if (ret != 0) 1082 if (ret != 0)
1087 return ret; 1083 return ret;
1088 first_draw_cmd = NULL; 1084 first_draw_cmd = NULL;
@@ -1098,12 +1094,12 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1098 DRM_ERROR("command SAVAGE_CMD_STATE extends " 1094 DRM_ERROR("command SAVAGE_CMD_STATE extends "
1099 "beyond end of command buffer\n"); 1095 "beyond end of command buffer\n");
1100 DMA_FLUSH(); 1096 DMA_FLUSH();
1101 return DRM_ERR(EINVAL); 1097 ret = DRM_ERR(EINVAL);
1098 goto done;
1102 } 1099 }
1103 ret = savage_dispatch_state(dev_priv, &cmd_header, 1100 ret = savage_dispatch_state(dev_priv, &cmd_header,
1104 (uint32_t __user *) 1101 (const uint32_t *)cmdbuf.cmd_addr);
1105 usr_cmdbuf); 1102 cmdbuf.cmd_addr += j;
1106 usr_cmdbuf += j;
1107 i += j; 1103 i += j;
1108 break; 1104 break;
1109 case SAVAGE_CMD_CLEAR: 1105 case SAVAGE_CMD_CLEAR:
@@ -1111,39 +1107,40 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1111 DRM_ERROR("command SAVAGE_CMD_CLEAR extends " 1107 DRM_ERROR("command SAVAGE_CMD_CLEAR extends "
1112 "beyond end of command buffer\n"); 1108 "beyond end of command buffer\n");
1113 DMA_FLUSH(); 1109 DMA_FLUSH();
1114 return DRM_ERR(EINVAL); 1110 ret = DRM_ERR(EINVAL);
1111 goto done;
1115 } 1112 }
1116 ret = savage_dispatch_clear(dev_priv, &cmd_header, 1113 ret = savage_dispatch_clear(dev_priv, &cmd_header,
1117 usr_cmdbuf, 1114 cmdbuf.cmd_addr,
1118 cmdbuf.nbox, usr_boxes); 1115 cmdbuf.nbox, cmdbuf.box_addr);
1119 usr_cmdbuf++; 1116 cmdbuf.cmd_addr++;
1120 i++; 1117 i++;
1121 break; 1118 break;
1122 case SAVAGE_CMD_SWAP: 1119 case SAVAGE_CMD_SWAP:
1123 ret = savage_dispatch_swap(dev_priv, 1120 ret = savage_dispatch_swap(dev_priv, cmdbuf.nbox,
1124 cmdbuf.nbox, usr_boxes); 1121 cmdbuf.box_addr);
1125 break; 1122 break;
1126 default: 1123 default:
1127 DRM_ERROR("invalid command 0x%x\n", cmd_header.cmd.cmd); 1124 DRM_ERROR("invalid command 0x%x\n", cmd_header.cmd.cmd);
1128 DMA_FLUSH(); 1125 DMA_FLUSH();
1129 return DRM_ERR(EINVAL); 1126 ret = DRM_ERR(EINVAL);
1127 goto done;
1130 } 1128 }
1131 1129
1132 if (ret != 0) { 1130 if (ret != 0) {
1133 DMA_FLUSH(); 1131 DMA_FLUSH();
1134 return ret; 1132 goto done;
1135 } 1133 }
1136 } 1134 }
1137 1135
1138 if (first_draw_cmd) { 1136 if (first_draw_cmd) {
1139 ret = 1137 ret = savage_dispatch_draw (
1140 savage_dispatch_draw(dev_priv, first_draw_cmd, usr_cmdbuf, 1138 dev_priv, first_draw_cmd, cmdbuf.cmd_addr, dmabuf,
1141 dmabuf, usr_vtxbuf, cmdbuf.vb_size, 1139 cmdbuf.vb_addr, cmdbuf.vb_size, cmdbuf.vb_stride,
1142 cmdbuf.vb_stride, cmdbuf.nbox, 1140 cmdbuf.nbox, cmdbuf.box_addr);
1143 usr_boxes);
1144 if (ret != 0) { 1141 if (ret != 0) {
1145 DMA_FLUSH(); 1142 DMA_FLUSH();
1146 return ret; 1143 goto done;
1147 } 1144 }
1148 } 1145 }
1149 1146
@@ -1157,5 +1154,12 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
1157 savage_freelist_put(dev, dmabuf); 1154 savage_freelist_put(dev, dmabuf);
1158 } 1155 }
1159 1156
1160 return 0; 1157done:
1158 /* If we didn't need to allocate them, these'll be NULL */
1159 drm_free(kcmd_addr, cmdbuf.size * 8, DRM_MEM_DRIVER);
1160 drm_free(kvb_addr, cmdbuf.vb_size, DRM_MEM_DRIVER);
1161 drm_free(kbox_addr, cmdbuf.nbox * sizeof(drm_clip_rect_t),
1162 DRM_MEM_DRIVER);
1163
1164 return ret;
1161} 1165}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 08:01:35 -0500