1 files changed, 262 insertions, 240 deletions

diff --git a/drivers/char/drm/r300_cmdbuf.c b/drivers/char/drm/r300_cmdbuf.c
index 623f1f460cb5..aa66f46279e7 100644
--- a/drivers/char/drm/r300_cmdbuf.c
+++ b/drivers/char/drm/r300_cmdbuf.c
@@ -37,7 +37,6 @@
 #include "radeon_drv.h"
 #include "r300_reg.h"
 
-
 #define R300_SIMULTANEOUS_CLIPRECTS             4
 
 /* Values for R300_RE_CLIPRECT_CNTL depending on the number of cliprects
@@ -49,14 +48,12 @@ static const int r300_cliprect_cntl[4] = {
         0xFFFE
 };
 
-
 /**
  * Emit up to R300_SIMULTANEOUS_CLIPRECTS cliprects from the given command
  * buffer, starting with index n.
  */
-static int r300_emit_cliprects(drm_radeon_private_t* dev_priv,
-                               drm_radeon_cmd_buffer_t* cmdbuf,
-                               int n)
+static int r300_emit_cliprects(drm_radeon_private_t * dev_priv,
+                               drm_radeon_cmd_buffer_t * cmdbuf, int n)
 {
         drm_clip_rect_t box;
         int nr;
@@ -70,38 +67,47 @@ static int r300_emit_cliprects(drm_radeon_private_t* dev_priv,
         DRM_DEBUG("%i cliprects\n", nr);
 
         if (nr) {
-                BEGIN_RING(6 + nr*2);
-                OUT_RING( CP_PACKET0( R300_RE_CLIPRECT_TL_0, nr*2 - 1 ) );
+                BEGIN_RING(6 + nr * 2);
+                OUT_RING(CP_PACKET0(R300_RE_CLIPRECT_TL_0, nr * 2 - 1));
 
-                for(i = 0; i < nr; ++i) {
-                        if (DRM_COPY_FROM_USER_UNCHECKED(&box, &cmdbuf->boxes[n+i], sizeof(box))) {
+                for (i = 0; i < nr; ++i) {
+                        if (DRM_COPY_FROM_USER_UNCHECKED
+                            (&box, &cmdbuf->boxes[n + i], sizeof(box))) {
                                 DRM_ERROR("copy cliprect faulted\n");
                                 return DRM_ERR(EFAULT);
                         }
 
-                        box.x1 = (box.x1 + R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
-                        box.y1 = (box.y1 + R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
-                        box.x2 = (box.x2 + R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
-                        box.y2 = (box.y2 + R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
+                        box.x1 =
+                            (box.x1 +
+                             R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
+                        box.y1 =
+                            (box.y1 +
+                             R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
+                        box.x2 =
+                            (box.x2 +
+                             R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
+                        box.y2 =
+                            (box.y2 +
+                             R300_CLIPRECT_OFFSET) & R300_CLIPRECT_MASK;
 
                         OUT_RING((box.x1 << R300_CLIPRECT_X_SHIFT) |
-                                        (box.y1 << R300_CLIPRECT_Y_SHIFT));
+                                 (box.y1 << R300_CLIPRECT_Y_SHIFT));
                         OUT_RING((box.x2 << R300_CLIPRECT_X_SHIFT) |
-                                        (box.y2 << R300_CLIPRECT_Y_SHIFT));
+                                 (box.y2 << R300_CLIPRECT_Y_SHIFT));
                 }
 
-                OUT_RING_REG( R300_RE_CLIPRECT_CNTL, r300_cliprect_cntl[nr-1] );
+                OUT_RING_REG(R300_RE_CLIPRECT_CNTL, r300_cliprect_cntl[nr - 1]);
 
                 /* TODO/SECURITY: Force scissors to a safe value, otherwise the
-                * client might be able to trample over memory.
-                * The impact should be very limited, but I'd rather be safe than
-                * sorry.
-                */
-                OUT_RING( CP_PACKET0( R300_RE_SCISSORS_TL, 1 ) );
-                OUT_RING( 0 );
-                OUT_RING( R300_SCISSORS_X_MASK | R300_SCISSORS_Y_MASK );
+                 * client might be able to trample over memory.
+                 * The impact should be very limited, but I'd rather be safe than
+                 * sorry.
+                 */
+                OUT_RING(CP_PACKET0(R300_RE_SCISSORS_TL, 1));
+                OUT_RING(0);
+                OUT_RING(R300_SCISSORS_X_MASK | R300_SCISSORS_Y_MASK);
                 ADVANCE_RING();
-                } else {
+        } else {
                 /* Why we allow zero cliprect rendering:
                  * There are some commands in a command buffer that must be submitted
                  * even when there are no cliprects, e.g. DMA buffer discard
@@ -118,28 +124,27 @@ static int r300_emit_cliprects(drm_radeon_private_t* dev_priv,
                  * can't produce any fragments.
                  */
                 BEGIN_RING(2);
-                OUT_RING_REG( R300_RE_CLIPRECT_CNTL, 0 );
+                OUT_RING_REG(R300_RE_CLIPRECT_CNTL, 0);
                 ADVANCE_RING();
-                }
+        }
 
         return 0;
 }
 
-u8  r300_reg_flags[0x10000>>2];
-
+u8 r300_reg_flags[0x10000 >> 2];
 
 void r300_init_reg_flags(void)
 {
         int i;
-        memset(r300_reg_flags, 0, 0x10000>>2);
-        #define ADD_RANGE_MARK(reg, count,mark) \
+        memset(r300_reg_flags, 0, 0x10000 >> 2);
+#define ADD_RANGE_MARK(reg, count,mark) \
                 for(i=((reg)>>2);i<((reg)>>2)+(count);i++)\
                         r300_reg_flags[i]|=(mark);
-        
-        #define MARK_SAFE               1
-        #define MARK_CHECK_OFFSET       2
-        
-        #define ADD_RANGE(reg, count)   ADD_RANGE_MARK(reg, count, MARK_SAFE)
+
+#define MARK_SAFE               1
+#define MARK_CHECK_OFFSET       2
+
+#define ADD_RANGE(reg, count)   ADD_RANGE_MARK(reg, count, MARK_SAFE)
 
         /* these match cmducs() command in r300_driver/r300/r300_cmdbuf.c */
         ADD_RANGE(R300_SE_VPORT_XSCALE, 6);
@@ -193,15 +198,15 @@ void r300_init_reg_flags(void)
         ADD_RANGE(R300_RB3D_CBLEND, 2);
         ADD_RANGE(R300_RB3D_COLORMASK, 1);
         ADD_RANGE(0x4E10, 3);
-        ADD_RANGE_MARK(R300_RB3D_COLOROFFSET0, 1, MARK_CHECK_OFFSET); /* check offset */
+        ADD_RANGE_MARK(R300_RB3D_COLOROFFSET0, 1, MARK_CHECK_OFFSET);   /* check offset */
         ADD_RANGE(R300_RB3D_COLORPITCH0, 1);
         ADD_RANGE(0x4E50, 9);
         ADD_RANGE(0x4E88, 1);
         ADD_RANGE(0x4EA0, 2);
         ADD_RANGE(R300_RB3D_ZSTENCIL_CNTL_0, 3);
         ADD_RANGE(0x4F10, 4);
-        ADD_RANGE_MARK(R300_RB3D_DEPTHOFFSET, 1, MARK_CHECK_OFFSET); /* check offset */
-        ADD_RANGE(R300_RB3D_DEPTHPITCH, 1); 
+        ADD_RANGE_MARK(R300_RB3D_DEPTHOFFSET, 1, MARK_CHECK_OFFSET);    /* check offset */
+        ADD_RANGE(R300_RB3D_DEPTHPITCH, 1);
         ADD_RANGE(0x4F28, 1);
         ADD_RANGE(0x4F30, 2);
         ADD_RANGE(0x4F44, 1);
@@ -211,7 +216,7 @@ void r300_init_reg_flags(void)
         ADD_RANGE(R300_TX_UNK1_0, 16);
         ADD_RANGE(R300_TX_SIZE_0, 16);
         ADD_RANGE(R300_TX_FORMAT_0, 16);
-                /* Texture offset is dangerous and needs more checking */
+        /* Texture offset is dangerous and needs more checking */
         ADD_RANGE_MARK(R300_TX_OFFSET_0, 16, MARK_CHECK_OFFSET);
         ADD_RANGE(R300_TX_UNK4_0, 16);
         ADD_RANGE(R300_TX_BORDER_COLOR_0, 16);
@@ -224,33 +229,41 @@ void r300_init_reg_flags(void)
 
 }
 
-static __inline__ int r300_check_range(unsigned  reg, int count)
+static __inline__ int r300_check_range(unsigned reg, int count)
 {
         int i;
-        if(reg & ~0xffff)return -1;
-        for(i=(reg>>2);i<(reg>>2)+count;i++)
-                if(r300_reg_flags[i]!=MARK_SAFE)return 1;
+        if (reg & ~0xffff)
+                return -1;
+        for (i = (reg >> 2); i < (reg >> 2) + count; i++)
+                if (r300_reg_flags[i] != MARK_SAFE)
+                        return 1;
         return 0;
 }
 
   /* we expect offsets passed to the framebuffer to be either within video memory or
-      within AGP space */
-static __inline__ int r300_check_offset(drm_radeon_private_t* dev_priv, u32 offset)
+     within AGP space */
+static __inline__ int r300_check_offset(drm_radeon_private_t * dev_priv,
+                                        u32 offset)
 {
         /* we realy want to check against end of video aperture
-                but this value is not being kept. 
-                This code is correct for now (does the same thing as the
-                code that sets MC_FB_LOCATION) in radeon_cp.c */
-        if((offset>=dev_priv->fb_location) && 
-                (offset<dev_priv->gart_vm_start))return 0;
-        if((offset>=dev_priv->gart_vm_start) &&
-                 (offset<dev_priv->gart_vm_start+dev_priv->gart_size))return 0;
+           but this value is not being kept.
+           This code is correct for now (does the same thing as the
+           code that sets MC_FB_LOCATION) in radeon_cp.c */
+        if ((offset >= dev_priv->fb_location) &&
+            (offset < dev_priv->gart_vm_start))
+                return 0;
+        if ((offset >= dev_priv->gart_vm_start) &&
+            (offset < dev_priv->gart_vm_start + dev_priv->gart_size))
+                return 0;
         return 1;
 }
 
-static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t* dev_priv,
-                                                drm_radeon_cmd_buffer_t* cmdbuf,
-                                                drm_r300_cmd_header_t header)
+static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t *
+                                                          dev_priv,
+                                                          drm_radeon_cmd_buffer_t
+                                                          * cmdbuf,
+                                                          drm_r300_cmd_header_t
+                                                          header)
 {
         int reg;
         int sz;
@@ -260,35 +273,40 @@ static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t*
 
         sz = header.packet0.count;
         reg = (header.packet0.reghi << 8) | header.packet0.reglo;
-        
-        if((sz>64)||(sz<0)){
-                DRM_ERROR("Cannot emit more than 64 values at a time (reg=%04x sz=%d)\n", reg, sz);
+
+        if ((sz > 64) || (sz < 0)) {
+                DRM_ERROR
+                    ("Cannot emit more than 64 values at a time (reg=%04x sz=%d)\n",
+                     reg, sz);
                 return DRM_ERR(EINVAL);
-                }
-        for(i=0;i<sz;i++){
-                values[i]=((int __user*)cmdbuf->buf)[i];
-                switch(r300_reg_flags[(reg>>2)+i]){
+        }
+        for (i = 0; i < sz; i++) {
+                values[i] = ((int __user *)cmdbuf->buf)[i];
+                switch (r300_reg_flags[(reg >> 2) + i]) {
                 case MARK_SAFE:
                         break;
                 case MARK_CHECK_OFFSET:
-                        if(r300_check_offset(dev_priv, (u32)values[i])){
-                                DRM_ERROR("Offset failed range check (reg=%04x sz=%d)\n", reg, sz);
+                        if (r300_check_offset(dev_priv, (u32) values[i])) {
+                                DRM_ERROR
+                                    ("Offset failed range check (reg=%04x sz=%d)\n",
+                                     reg, sz);
                                 return DRM_ERR(EINVAL);
-                                }
+                        }
                         break;
                 default:
-                        DRM_ERROR("Register %04x failed check as flag=%02x\n", reg+i*4, r300_reg_flags[(reg>>2)+i]);
+                        DRM_ERROR("Register %04x failed check as flag=%02x\n",
+                                  reg + i * 4, r300_reg_flags[(reg >> 2) + i]);
                         return DRM_ERR(EINVAL);
-                        }
                 }
-                
-        BEGIN_RING(1+sz);
-        OUT_RING( CP_PACKET0( reg, sz-1 ) );
-        OUT_RING_TABLE( values, sz );
+        }
+
+        BEGIN_RING(1 + sz);
+        OUT_RING(CP_PACKET0(reg, sz - 1));
+        OUT_RING_TABLE(values, sz);
         ADVANCE_RING();
 
-        cmdbuf->buf += sz*4;
-        cmdbuf->bufsz -= sz*4;
+        cmdbuf->buf += sz * 4;
+        cmdbuf->bufsz -= sz * 4;
 
         return 0;
 }
@@ -299,9 +317,9 @@ static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t*
  *
  * Note that checks are performed on contents and addresses of the registers
  */
-static __inline__ int r300_emit_packet0(drm_radeon_private_t* dev_priv,
-                                                drm_radeon_cmd_buffer_t* cmdbuf,
-                                                drm_r300_cmd_header_t header)
+static __inline__ int r300_emit_packet0(drm_radeon_private_t * dev_priv,
+                                        drm_radeon_cmd_buffer_t * cmdbuf,
+                                        drm_r300_cmd_header_t header)
 {
         int reg;
         int sz;
@@ -313,39 +331,40 @@ static __inline__ int r300_emit_packet0(drm_radeon_private_t* dev_priv,
         if (!sz)
                 return 0;
 
-        if (sz*4 > cmdbuf->bufsz)
+        if (sz * 4 > cmdbuf->bufsz)
                 return DRM_ERR(EINVAL);
-                
-        if (reg+sz*4 >= 0x10000){
-                DRM_ERROR("No such registers in hardware reg=%04x sz=%d\n", reg, sz);
+
+        if (reg + sz * 4 >= 0x10000) {
+                DRM_ERROR("No such registers in hardware reg=%04x sz=%d\n", reg,
+                          sz);
                 return DRM_ERR(EINVAL);
-                }
+        }
 
-        if(r300_check_range(reg, sz)){
+        if (r300_check_range(reg, sz)) {
                 /* go and check everything */
-                return r300_emit_carefully_checked_packet0(dev_priv, cmdbuf, header);
-                }
+                return r300_emit_carefully_checked_packet0(dev_priv, cmdbuf,
+                                                           header);
+        }
         /* the rest of the data is safe to emit, whatever the values the user passed */
 
-        BEGIN_RING(1+sz);
-        OUT_RING( CP_PACKET0( reg, sz-1 ) );
-        OUT_RING_TABLE( (int __user*)cmdbuf->buf, sz );
+        BEGIN_RING(1 + sz);
+        OUT_RING(CP_PACKET0(reg, sz - 1));
+        OUT_RING_TABLE((int __user *)cmdbuf->buf, sz);
         ADVANCE_RING();
 
-        cmdbuf->buf += sz*4;
-        cmdbuf->bufsz -= sz*4;
+        cmdbuf->buf += sz * 4;
+        cmdbuf->bufsz -= sz * 4;
 
         return 0;
 }
 
-
 /**
  * Uploads user-supplied vertex program instructions or parameters onto
  * the graphics card.
  * Called by r300_do_cp_cmdbuf.
  */
-static __inline__ int r300_emit_vpu(drm_radeon_private_t* dev_priv,
-                                    drm_radeon_cmd_buffer_t* cmdbuf,
+static __inline__ int r300_emit_vpu(drm_radeon_private_t * dev_priv,
+                                    drm_radeon_cmd_buffer_t * cmdbuf,
                                     drm_r300_cmd_header_t header)
 {
         int sz;
@@ -357,114 +376,121 @@ static __inline__ int r300_emit_vpu(drm_radeon_private_t* dev_priv,
 
         if (!sz)
                 return 0;
-        if (sz*16 > cmdbuf->bufsz)
+        if (sz * 16 > cmdbuf->bufsz)
                 return DRM_ERR(EINVAL);
 
-        BEGIN_RING(5+sz*4);
+        BEGIN_RING(5 + sz * 4);
         /* Wait for VAP to come to senses.. */
         /* there is no need to emit it multiple times, (only once before VAP is programmed,
            but this optimization is for later */
-        OUT_RING_REG( R300_VAP_PVS_WAITIDLE, 0 );
-        OUT_RING_REG( R300_VAP_PVS_UPLOAD_ADDRESS, addr );
-        OUT_RING( CP_PACKET0_TABLE( R300_VAP_PVS_UPLOAD_DATA, sz*4 - 1 ) );
-        OUT_RING_TABLE( (int __user*)cmdbuf->buf, sz*4 );
+        OUT_RING_REG(R300_VAP_PVS_WAITIDLE, 0);
+        OUT_RING_REG(R300_VAP_PVS_UPLOAD_ADDRESS, addr);
+        OUT_RING(CP_PACKET0_TABLE(R300_VAP_PVS_UPLOAD_DATA, sz * 4 - 1));
+        OUT_RING_TABLE((int __user *)cmdbuf->buf, sz * 4);
 
         ADVANCE_RING();
 
-        cmdbuf->buf += sz*16;
-        cmdbuf->bufsz -= sz*16;
+        cmdbuf->buf += sz * 16;
+        cmdbuf->bufsz -= sz * 16;
 
         return 0;
 }
 
-
 /**
  * Emit a clear packet from userspace.
  * Called by r300_emit_packet3.
  */
-static __inline__ int r300_emit_clear(drm_radeon_private_t* dev_priv,
-                                      drm_radeon_cmd_buffer_t* cmdbuf)
+static __inline__ int r300_emit_clear(drm_radeon_private_t * dev_priv,
+                                      drm_radeon_cmd_buffer_t * cmdbuf)
 {
         RING_LOCALS;
 
-        if (8*4 > cmdbuf->bufsz)
+        if (8 * 4 > cmdbuf->bufsz)
                 return DRM_ERR(EINVAL);
 
         BEGIN_RING(10);
-        OUT_RING( CP_PACKET3( R200_3D_DRAW_IMMD_2, 8 ) );
-        OUT_RING( R300_PRIM_TYPE_POINT|R300_PRIM_WALK_RING|
-                  (1<<R300_PRIM_NUM_VERTICES_SHIFT) );
-        OUT_RING_TABLE( (int __user*)cmdbuf->buf, 8 );
+        OUT_RING(CP_PACKET3(R200_3D_DRAW_IMMD_2, 8));
+        OUT_RING(R300_PRIM_TYPE_POINT | R300_PRIM_WALK_RING |
+                 (1 << R300_PRIM_NUM_VERTICES_SHIFT));
+        OUT_RING_TABLE((int __user *)cmdbuf->buf, 8);
         ADVANCE_RING();
 
-        cmdbuf->buf += 8*4;
-        cmdbuf->bufsz -= 8*4;
+        cmdbuf->buf += 8 * 4;
+        cmdbuf->bufsz -= 8 * 4;
 
         return 0;
 }
 
-static __inline__ int r300_emit_3d_load_vbpntr(drm_radeon_private_t* dev_priv,
-                                      drm_radeon_cmd_buffer_t* cmdbuf,
-                                      u32 header)
+static __inline__ int r300_emit_3d_load_vbpntr(drm_radeon_private_t * dev_priv,
+                                               drm_radeon_cmd_buffer_t * cmdbuf,
+                                               u32 header)
 {
-        int count, i,k;
-        #define MAX_ARRAY_PACKET  64
+        int count, i, k;
+#define MAX_ARRAY_PACKET  64
         u32 payload[MAX_ARRAY_PACKET];
         u32 narrays;
         RING_LOCALS;
 
-        count=(header>>16) & 0x3fff;
-        
-        if((count+1)>MAX_ARRAY_PACKET){
-                DRM_ERROR("Too large payload in 3D_LOAD_VBPNTR (count=%d)\n", count);
+        count = (header >> 16) & 0x3fff;
+
+        if ((count + 1) > MAX_ARRAY_PACKET) {
+                DRM_ERROR("Too large payload in 3D_LOAD_VBPNTR (count=%d)\n",
+                          count);
                 return DRM_ERR(EINVAL);
-                }
-        memset(payload, 0, MAX_ARRAY_PACKET*4);
-        memcpy(payload, cmdbuf->buf+4, (count+1)*4);    
-        
+        }
+        memset(payload, 0, MAX_ARRAY_PACKET * 4);
+        memcpy(payload, cmdbuf->buf + 4, (count + 1) * 4);
+
         /* carefully check packet contents */
-        
-        narrays=payload[0];
-        k=0;
-        i=1;
-        while((k<narrays) && (i<(count+1))){
-                i++; /* skip attribute field */
-                if(r300_check_offset(dev_priv, payload[i])){
-                        DRM_ERROR("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n", k, i);
+
+        narrays = payload[0];
+        k = 0;
+        i = 1;
+        while ((k < narrays) && (i < (count + 1))) {
+                i++;            /* skip attribute field */
+                if (r300_check_offset(dev_priv, payload[i])) {
+                        DRM_ERROR
+                            ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
+                             k, i);
                         return DRM_ERR(EINVAL);
-                        }
+                }
                 k++;
                 i++;
-                if(k==narrays)break;
+                if (k == narrays)
+                        break;
                 /* have one more to process, they come in pairs */
-                if(r300_check_offset(dev_priv, payload[i])){
-                        DRM_ERROR("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n", k, i);
+                if (r300_check_offset(dev_priv, payload[i])) {
+                        DRM_ERROR
+                            ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
+                             k, i);
                         return DRM_ERR(EINVAL);
-                        }
-                k++;
-                i++;                    
                 }
+                k++;
+                i++;
+        }
         /* do the counts match what we expect ? */
-        if((k!=narrays) || (i!=(count+1))){
-                DRM_ERROR("Malformed 3D_LOAD_VBPNTR packet (k=%d i=%d narrays=%d count+1=%d).\n", k, i, narrays, count+1);
+        if ((k != narrays) || (i != (count + 1))) {
+                DRM_ERROR
+                    ("Malformed 3D_LOAD_VBPNTR packet (k=%d i=%d narrays=%d count+1=%d).\n",
+                     k, i, narrays, count + 1);
                 return DRM_ERR(EINVAL);
-                }
+        }
 
         /* all clear, output packet */
 
-        BEGIN_RING(count+2);
+        BEGIN_RING(count + 2);
         OUT_RING(header);
-        OUT_RING_TABLE(payload, count+1);
+        OUT_RING_TABLE(payload, count + 1);
         ADVANCE_RING();
 
-        cmdbuf->buf += (count+2)*4;
-        cmdbuf->bufsz -= (count+2)*4;
+        cmdbuf->buf += (count + 2) * 4;
+        cmdbuf->bufsz -= (count + 2) * 4;
 
         return 0;
 }
 
-static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t* dev_priv,
-                                      drm_radeon_cmd_buffer_t* cmdbuf)
+static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t * dev_priv,
+                                            drm_radeon_cmd_buffer_t * cmdbuf)
 {
         u32 header;
         int count;
@@ -473,36 +499,37 @@ static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t* dev_priv,
         if (4 > cmdbuf->bufsz)
                 return DRM_ERR(EINVAL);
 
-        /* Fixme !! This simply emits a packet without much checking.
+        /* Fixme !! This simply emits a packet without much checking.
            We need to be smarter. */
 
         /* obtain first word - actual packet3 header */
-        header = *(u32 __user*)cmdbuf->buf;
+        header = *(u32 __user *) cmdbuf->buf;
 
         /* Is it packet 3 ? */
-        if( (header>>30)!=0x3 ) {
+        if ((header >> 30) != 0x3) {
                 DRM_ERROR("Not a packet3 header (0x%08x)\n", header);
                 return DRM_ERR(EINVAL);
-                }
+        }
 
-        count=(header>>16) & 0x3fff;
+        count = (header >> 16) & 0x3fff;
 
         /* Check again now that we know how much data to expect */
-        if ((count+2)*4 > cmdbuf->bufsz){
-                DRM_ERROR("Expected packet3 of length %d but have only %d bytes left\n",
-                        (count+2)*4, cmdbuf->bufsz);
+        if ((count + 2) * 4 > cmdbuf->bufsz) {
+                DRM_ERROR
+                    ("Expected packet3 of length %d but have only %d bytes left\n",
+                     (count + 2) * 4, cmdbuf->bufsz);
                 return DRM_ERR(EINVAL);
-                }
+        }
 
         /* Is it a packet type we know about ? */
-        switch(header & 0xff00){
-        case RADEON_3D_LOAD_VBPNTR: /* load vertex array pointers */
+        switch (header & 0xff00) {
+        case RADEON_3D_LOAD_VBPNTR:     /* load vertex array pointers */
                 return r300_emit_3d_load_vbpntr(dev_priv, cmdbuf, header);
 
-        case RADEON_CP_3D_DRAW_IMMD_2: /* triggers drawing using in-packet vertex data */
-        case RADEON_CP_3D_DRAW_VBUF_2: /* triggers drawing of vertex buffers setup elsewhere */
-        case RADEON_CP_3D_DRAW_INDX_2: /* triggers drawing using indices to vertex buffer */
-        case RADEON_CP_INDX_BUFFER: /* DRAW_INDX_2 without INDX_BUFFER seems to lock up the gpu */
+        case RADEON_CP_3D_DRAW_IMMD_2:  /* triggers drawing using in-packet vertex data */
+        case RADEON_CP_3D_DRAW_VBUF_2:  /* triggers drawing of vertex buffers setup elsewhere */
+        case RADEON_CP_3D_DRAW_INDX_2:  /* triggers drawing using indices to vertex buffer */
+        case RADEON_CP_INDX_BUFFER:     /* DRAW_INDX_2 without INDX_BUFFER seems to lock up the gpu */
         case RADEON_WAIT_FOR_IDLE:
         case RADEON_CP_NOP:
                 /* these packets are safe */
@@ -510,32 +537,30 @@ static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t* dev_priv,
         default:
                 DRM_ERROR("Unknown packet3 header (0x%08x)\n", header);
                 return DRM_ERR(EINVAL);
-                }
-
+        }
 
-        BEGIN_RING(count+2);
+        BEGIN_RING(count + 2);
         OUT_RING(header);
-        OUT_RING_TABLE( (int __user*)(cmdbuf->buf+4), count+1);
+        OUT_RING_TABLE((int __user *)(cmdbuf->buf + 4), count + 1);
         ADVANCE_RING();
 
-        cmdbuf->buf += (count+2)*4;
-        cmdbuf->bufsz -= (count+2)*4;
+        cmdbuf->buf += (count + 2) * 4;
+        cmdbuf->bufsz -= (count + 2) * 4;
 
         return 0;
 }
 
-
 /**
  * Emit a rendering packet3 from userspace.
  * Called by r300_do_cp_cmdbuf.
  */
-static __inline__ int r300_emit_packet3(drm_radeon_private_t* dev_priv,
-                                        drm_radeon_cmd_buffer_t* cmdbuf,
+static __inline__ int r300_emit_packet3(drm_radeon_private_t * dev_priv,
+                                        drm_radeon_cmd_buffer_t * cmdbuf,
                                         drm_r300_cmd_header_t header)
 {
         int n;
         int ret;
-        char __user* orig_buf = cmdbuf->buf;
+        char __user *orig_buf = cmdbuf->buf;
         int orig_bufsz = cmdbuf->bufsz;
 
         /* This is a do-while-loop so that we run the interior at least once,
@@ -550,16 +575,16 @@ static __inline__ int r300_emit_packet3(drm_radeon_private_t* dev_priv,
 
                         cmdbuf->buf = orig_buf;
                         cmdbuf->bufsz = orig_bufsz;
-                        }
+                }
 
-                switch(header.packet3.packet) {
+                switch (header.packet3.packet) {
                 case R300_CMD_PACKET3_CLEAR:
                         DRM_DEBUG("R300_CMD_PACKET3_CLEAR\n");
                         ret = r300_emit_clear(dev_priv, cmdbuf);
                         if (ret) {
                                 DRM_ERROR("r300_emit_clear failed\n");
                                 return ret;
-                                }
+                        }
                         break;
 
                 case R300_CMD_PACKET3_RAW:
@@ -568,18 +593,18 @@ static __inline__ int r300_emit_packet3(drm_radeon_private_t* dev_priv,
                         if (ret) {
                                 DRM_ERROR("r300_emit_raw_packet3 failed\n");
                                 return ret;
-                                }
+                        }
                         break;
 
                 default:
                         DRM_ERROR("bad packet3 type %i at %p\n",
-                                header.packet3.packet,
-                                cmdbuf->buf - sizeof(header));
+                                  header.packet3.packet,
+                                  cmdbuf->buf - sizeof(header));
                         return DRM_ERR(EINVAL);
-                        }
+                }
 
                 n += R300_SIMULTANEOUS_CLIPRECTS;
-        } while(n < cmdbuf->nbox);
+        } while (n < cmdbuf->nbox);
 
         return 0;
 }
@@ -598,21 +623,20 @@ static __inline__ int r300_emit_packet3(drm_radeon_private_t* dev_priv,
 /**
  * Emit the sequence to pacify R300.
  */
-static __inline__ void r300_pacify(drm_radeon_private_t* dev_priv)
+static __inline__ void r300_pacify(drm_radeon_private_t * dev_priv)
 {
         RING_LOCALS;
 
         BEGIN_RING(6);
-        OUT_RING( CP_PACKET0( R300_RB3D_DSTCACHE_CTLSTAT, 0 ) );
-        OUT_RING( 0xa );
-        OUT_RING( CP_PACKET0( 0x4f18, 0 ) );
-        OUT_RING( 0x3 );
-        OUT_RING( CP_PACKET3( RADEON_CP_NOP, 0 ) );
-        OUT_RING( 0x0 );
+        OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
+        OUT_RING(0xa);
+        OUT_RING(CP_PACKET0(0x4f18, 0));
+        OUT_RING(0x3);
+        OUT_RING(CP_PACKET3(RADEON_CP_NOP, 0));
+        OUT_RING(0x0);
         ADVANCE_RING();
 }
 
-
 /**
  * Called by r300_do_cp_cmdbuf to update the internal buffer age and state.
  * The actual age emit is done by r300_do_cp_cmdbuf, which is why you must
@@ -628,20 +652,18 @@ static void r300_discard_buffer(drm_device_t * dev, drm_buf_t * buf)
         buf->used = 0;
 }
 
-
 /**
  * Parses and validates a user-supplied command buffer and emits appropriate
  * commands on the DMA ring buffer.
  * Called by the ioctl handler function radeon_cp_cmdbuf.
  */
-int r300_do_cp_cmdbuf(drm_device_t* dev,
-                          DRMFILE filp,
-                      drm_file_t* filp_priv,
-                      drm_radeon_cmd_buffer_t* cmdbuf)
+int r300_do_cp_cmdbuf(drm_device_t * dev,
+                      DRMFILE filp,
+                      drm_file_t * filp_priv, drm_radeon_cmd_buffer_t * cmdbuf)
 {
         drm_radeon_private_t *dev_priv = dev->dev_private;
-        drm_device_dma_t *dma = dev->dma;
-        drm_buf_t *buf = NULL;
+        drm_device_dma_t *dma = dev->dma;
+        drm_buf_t *buf = NULL;
         int emit_dispatch_age = 0;
         int ret = 0;
 
@@ -655,9 +677,9 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
                 ret = r300_emit_cliprects(dev_priv, cmdbuf, 0);
                 if (ret)
                         goto cleanup;
-                }
+        }
 
-        while(cmdbuf->bufsz >= sizeof(drm_r300_cmd_header_t)) {
+        while (cmdbuf->bufsz >= sizeof(drm_r300_cmd_header_t)) {
                 int idx;
                 drm_r300_cmd_header_t header;
 
@@ -666,14 +688,14 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
                 cmdbuf->buf += sizeof(header);
                 cmdbuf->bufsz -= sizeof(header);
 
-                switch(header.header.cmd_type) {
-                case R300_CMD_PACKET0: 
+                switch (header.header.cmd_type) {
+                case R300_CMD_PACKET0:
                         DRM_DEBUG("R300_CMD_PACKET0\n");
                         ret = r300_emit_packet0(dev_priv, cmdbuf, header);
                         if (ret) {
                                 DRM_ERROR("r300_emit_packet0 failed\n");
                                 goto cleanup;
-                                }
+                        }
                         break;
 
                 case R300_CMD_VPU:
@@ -682,7 +704,7 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
                         if (ret) {
                                 DRM_ERROR("r300_emit_vpu failed\n");
                                 goto cleanup;
-                                }
+                        }
                         break;
 
                 case R300_CMD_PACKET3:
@@ -691,26 +713,26 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
                         if (ret) {
                                 DRM_ERROR("r300_emit_packet3 failed\n");
                                 goto cleanup;
-                                }
+                        }
                         break;
 
                 case R300_CMD_END3D:
                         DRM_DEBUG("R300_CMD_END3D\n");
-                        /* TODO: 
-                                Ideally userspace driver should not need to issue this call, 
-                                i.e. the drm driver should issue it automatically and prevent
-                                lockups.
-                                
-                                In practice, we do not understand why this call is needed and what
-                                it does (except for some vague guesses that it has to do with cache
-                                coherence) and so the user space driver does it. 
-                                
-                                Once we are sure which uses prevent lockups the code could be moved
-                                into the kernel and the userspace driver will not
-                                need to use this command.
-
-                                Note that issuing this command does not hurt anything
-                                except, possibly, performance */
+                        /* TODO:
+                           Ideally userspace driver should not need to issue this call,
+                           i.e. the drm driver should issue it automatically and prevent
+                           lockups.
+
+                           In practice, we do not understand why this call is needed and what
+                           it does (except for some vague guesses that it has to do with cache
+                           coherence) and so the user space driver does it.
+
+                           Once we are sure which uses prevent lockups the code could be moved
+                           into the kernel and the userspace driver will not
+                           need to use this command.
+
+                           Note that issuing this command does not hurt anything
+                           except, possibly, performance */
                         r300_pacify(dev_priv);
                         break;
 
@@ -722,7 +744,7 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
                                 RING_LOCALS;
 
                                 BEGIN_RING(header.delay.count);
-                                for(i=0;i<header.delay.count;i++)
+                                for (i = 0; i < header.delay.count; i++)
                                         OUT_RING(RADEON_CP_PACKET2);
                                 ADVANCE_RING();
                         }
@@ -730,53 +752,54 @@ int r300_do_cp_cmdbuf(drm_device_t* dev,
 
                 case R300_CMD_DMA_DISCARD:
                         DRM_DEBUG("RADEON_CMD_DMA_DISCARD\n");
-                        idx = header.dma.buf_idx;
-                        if (idx < 0 || idx >= dma->buf_count) {
-                                DRM_ERROR("buffer index %d (of %d max)\n",
-                                        idx, dma->buf_count - 1);
+                        idx = header.dma.buf_idx;
+                        if (idx < 0 || idx >= dma->buf_count) {
+                                DRM_ERROR("buffer index %d (of %d max)\n",
+                                          idx, dma->buf_count - 1);
                                 ret = DRM_ERR(EINVAL);
-                                goto cleanup;
-                                }
-
-                        buf = dma->buflist[idx];
-                        if (buf->filp != filp || buf->pending) {
-                                DRM_ERROR("bad buffer %p %p %d\n",
-                                buf->filp, filp, buf->pending);
-                                ret = DRM_ERR(EINVAL);
                                 goto cleanup;
-                                }
+                        }
+
+                        buf = dma->buflist[idx];
+                        if (buf->filp != filp || buf->pending) {
+                                DRM_ERROR("bad buffer %p %p %d\n",
+                                          buf->filp, filp, buf->pending);
+                                ret = DRM_ERR(EINVAL);
+                                goto cleanup;
+                        }
 
                         emit_dispatch_age = 1;
                         r300_discard_buffer(dev, buf);
-                        break;
+                        break;
 
                 case R300_CMD_WAIT:
                         /* simple enough, we can do it here */
                         DRM_DEBUG("R300_CMD_WAIT\n");
-                        if(header.wait.flags==0)break; /* nothing to do */
+                        if (header.wait.flags == 0)
+                                break;  /* nothing to do */
 
                         {
                                 RING_LOCALS;
 
                                 BEGIN_RING(2);
-                                OUT_RING( CP_PACKET0( RADEON_WAIT_UNTIL, 0 ) );
-                                OUT_RING( (header.wait.flags & 0xf)<<14 );
+                                OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
+                                OUT_RING((header.wait.flags & 0xf) << 14);
                                 ADVANCE_RING();
                         }
                         break;
 
                 default:
                         DRM_ERROR("bad cmd_type %i at %p\n",
-                                  header.header.cmd_type,
+                                  header.header.cmd_type,
                                   cmdbuf->buf - sizeof(header));
                         ret = DRM_ERR(EINVAL);
                         goto cleanup;
-                        }
+                }
         }
 
         DRM_DEBUG("END\n");
 
-cleanup:
+      cleanup:
         r300_pacify(dev_priv);
 
         /* We emit the vertex buffer age here, outside the pacifier "brackets"
@@ -792,10 +815,9 @@ cleanup:
                 BEGIN_RING(2);
                 RADEON_DISPATCH_AGE(dev_priv->sarea_priv->last_dispatch);
                 ADVANCE_RING();
-                }
+        }
 
         COMMIT_RING();
 
         return ret;
 }
-