--- /dev/null
+#include "radeonfb.h"
+
+/* the accelerated functions here are patterned after the
+ * "ACCEL_MMIO" ifdef branches in XFree86
+ * --dte
+ */
+
+static void radeon_fixup_offset(struct radeonfb_info *rinfo)
+{
+ u32 local_base;
+
+ /* *** Ugly workaround *** */
+ /*
+ * On some platforms, the video memory is mapped at 0 in radeon chip space
+ * (like PPCs) by the firmware. X will always move it up so that it's seen
+ * by the chip to be at the same address as the PCI BAR.
+ * That means that when switching back from X, there is a mismatch between
+ * the offsets programmed into the engine. This means that potentially,
+ * accel operations done before radeonfb has a chance to re-init the engine
+ * will have incorrect offsets, and potentially trash system memory !
+ *
+ * The correct fix is for fbcon to never call any accel op before the engine
+ * has properly been re-initialized (by a call to set_var), but this is a
+ * complex fix. This workaround in the meantime, called before every accel
+ * operation, makes sure the offsets are in sync.
+ */
+
+ radeon_fifo_wait (1);
+ local_base = INREG(MC_FB_LOCATION) << 16;
+ if (local_base == rinfo->fb_local_base)
+ return;
+
+ rinfo->fb_local_base = local_base;
+
+ radeon_fifo_wait (3);
+ OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
+ (rinfo->fb_local_base >> 10));
+ OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
+ OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
+}
+
+static void radeonfb_prim_fillrect(struct radeonfb_info *rinfo,
+ const struct fb_fillrect *region)
+{
+ radeon_fifo_wait(4);
+
+ OUTREG(DP_GUI_MASTER_CNTL,
+ rinfo->dp_gui_master_cntl /* contains, like GMC_DST_32BPP */
+ | GMC_BRUSH_SOLID_COLOR
+ | ROP3_P);
+ if (radeon_get_dstbpp(rinfo->depth) != DST_8BPP)
+ OUTREG(DP_BRUSH_FRGD_CLR, rinfo->pseudo_palette[region->color]);
+ else
+ OUTREG(DP_BRUSH_FRGD_CLR, region->color);
+ OUTREG(DP_WRITE_MSK, 0xffffffff);
+ OUTREG(DP_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM));
+
+ radeon_fifo_wait(2);
+ OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
+ OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
+
+ radeon_fifo_wait(2);
+ OUTREG(DST_Y_X, (region->dy << 16) | region->dx);
+ OUTREG(DST_WIDTH_HEIGHT, (region->width << 16) | region->height);
+}
+
+void radeonfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
+{
+ struct radeonfb_info *rinfo = info->par;
+ struct fb_fillrect modded;
+ int vxres, vyres;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+ if (info->flags & FBINFO_HWACCEL_DISABLED) {
+ cfb_fillrect(info, region);
+ return;
+ }
+
+ radeon_fixup_offset(rinfo);
+
+ vxres = info->var.xres_virtual;
+ vyres = info->var.yres_virtual;
+
+ memcpy(&modded, region, sizeof(struct fb_fillrect));
+
+ if(!modded.width || !modded.height ||
+ modded.dx >= vxres || modded.dy >= vyres)
+ return;
+
+ if(modded.dx + modded.width > vxres) modded.width = vxres - modded.dx;
+ if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
+
+ radeonfb_prim_fillrect(rinfo, &modded);
+}
+
+static void radeonfb_prim_copyarea(struct radeonfb_info *rinfo,
+ const struct fb_copyarea *area)
+{
+ int xdir, ydir;
+ u32 sx, sy, dx, dy, w, h;
+
+ w = area->width; h = area->height;
+ dx = area->dx; dy = area->dy;
+ sx = area->sx; sy = area->sy;
+ xdir = sx - dx;
+ ydir = sy - dy;
+
+ if ( xdir < 0 ) { sx += w-1; dx += w-1; }
+ if ( ydir < 0 ) { sy += h-1; dy += h-1; }
+
+ radeon_fifo_wait(3);
+ OUTREG(DP_GUI_MASTER_CNTL,
+ rinfo->dp_gui_master_cntl /* i.e. GMC_DST_32BPP */
+ | GMC_BRUSH_NONE
+ | GMC_SRC_DSTCOLOR
+ | ROP3_S
+ | DP_SRC_SOURCE_MEMORY );
+ OUTREG(DP_WRITE_MSK, 0xffffffff);
+ OUTREG(DP_CNTL, (xdir>=0 ? DST_X_LEFT_TO_RIGHT : 0)
+ | (ydir>=0 ? DST_Y_TOP_TO_BOTTOM : 0));
+
+ radeon_fifo_wait(2);
+ OUTREG(DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL);
+ OUTREG(WAIT_UNTIL, (WAIT_2D_IDLECLEAN | WAIT_DMA_GUI_IDLE));
+
+ radeon_fifo_wait(3);
+ OUTREG(SRC_Y_X, (sy << 16) | sx);
+ OUTREG(DST_Y_X, (dy << 16) | dx);
+ OUTREG(DST_HEIGHT_WIDTH, (h << 16) | w);
+}
+
+
+void radeonfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ struct radeonfb_info *rinfo = info->par;
+ struct fb_copyarea modded;
+ u32 vxres, vyres;
+ modded.sx = area->sx;
+ modded.sy = area->sy;
+ modded.dx = area->dx;
+ modded.dy = area->dy;
+ modded.width = area->width;
+ modded.height = area->height;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+ if (info->flags & FBINFO_HWACCEL_DISABLED) {
+ cfb_copyarea(info, area);
+ return;
+ }
+
+ radeon_fixup_offset(rinfo);
+
+ vxres = info->var.xres_virtual;
+ vyres = info->var.yres_virtual;
+
+ if(!modded.width || !modded.height ||
+ modded.sx >= vxres || modded.sy >= vyres ||
+ modded.dx >= vxres || modded.dy >= vyres)
+ return;
+
+ if(modded.sx + modded.width > vxres) modded.width = vxres - modded.sx;
+ if(modded.dx + modded.width > vxres) modded.width = vxres - modded.dx;
+ if(modded.sy + modded.height > vyres) modded.height = vyres - modded.sy;
+ if(modded.dy + modded.height > vyres) modded.height = vyres - modded.dy;
+
+ radeonfb_prim_copyarea(rinfo, &modded);
+}
+
+void radeonfb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct radeonfb_info *rinfo = info->par;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return;
+ radeon_engine_idle();
+
+ cfb_imageblit(info, image);
+}
+
+int radeonfb_sync(struct fb_info *info)
+{
+ struct radeonfb_info *rinfo = info->par;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return 0;
+ radeon_engine_idle();
+
+ return 0;
+}
+
+void radeonfb_engine_reset(struct radeonfb_info *rinfo)
+{
+ u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;
+ u32 host_path_cntl;
+
+ radeon_engine_flush (rinfo);
+
+ clock_cntl_index = INREG(CLOCK_CNTL_INDEX);
+ mclk_cntl = INPLL(MCLK_CNTL);
+
+ OUTPLL(MCLK_CNTL, (mclk_cntl |
+ FORCEON_MCLKA |
+ FORCEON_MCLKB |
+ FORCEON_YCLKA |
+ FORCEON_YCLKB |
+ FORCEON_MC |
+ FORCEON_AIC));
+
+ host_path_cntl = INREG(HOST_PATH_CNTL);
+ rbbm_soft_reset = INREG(RBBM_SOFT_RESET);
+
+ if (IS_R300_VARIANT(rinfo)) {
+ u32 tmp;
+
+ OUTREG(RBBM_SOFT_RESET, (rbbm_soft_reset |
+ SOFT_RESET_CP |
+ SOFT_RESET_HI |
+ SOFT_RESET_E2));
+ INREG(RBBM_SOFT_RESET);
+ OUTREG(RBBM_SOFT_RESET, 0);
+ tmp = INREG(RB2D_DSTCACHE_MODE);
+ OUTREG(RB2D_DSTCACHE_MODE, tmp | (1 << 17)); /* FIXME */
+ } else {
+ OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset |
+ SOFT_RESET_CP |
+ SOFT_RESET_HI |
+ SOFT_RESET_SE |
+ SOFT_RESET_RE |
+ SOFT_RESET_PP |
+ SOFT_RESET_E2 |
+ SOFT_RESET_RB);
+ INREG(RBBM_SOFT_RESET);
+ OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset & (u32)
+ ~(SOFT_RESET_CP |
+ SOFT_RESET_HI |
+ SOFT_RESET_SE |
+ SOFT_RESET_RE |
+ SOFT_RESET_PP |
+ SOFT_RESET_E2 |
+ SOFT_RESET_RB));
+ INREG(RBBM_SOFT_RESET);
+ }
+
+ OUTREG(HOST_PATH_CNTL, host_path_cntl | HDP_SOFT_RESET);
+ INREG(HOST_PATH_CNTL);
+ OUTREG(HOST_PATH_CNTL, host_path_cntl);
+
+ if (!IS_R300_VARIANT(rinfo))
+ OUTREG(RBBM_SOFT_RESET, rbbm_soft_reset);
+
+ OUTREG(CLOCK_CNTL_INDEX, clock_cntl_index);
+ OUTPLL(MCLK_CNTL, mclk_cntl);
+}
+
+void radeonfb_engine_init (struct radeonfb_info *rinfo)
+{
+ unsigned long temp;
+
+ /* disable 3D engine */
+ OUTREG(RB3D_CNTL, 0);
+
+ radeonfb_engine_reset(rinfo);
+
+ radeon_fifo_wait (1);
+ 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
+ * modified by XFree drivers (ouch !)
+ */
+ rinfo->fb_local_base = INREG(MC_FB_LOCATION) << 16;
+
+ OUTREG(DEFAULT_PITCH_OFFSET, (rinfo->pitch << 0x16) |
+ (rinfo->fb_local_base >> 10));
+ OUTREG(DST_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
+ OUTREG(SRC_PITCH_OFFSET, (rinfo->pitch << 0x16) | (rinfo->fb_local_base >> 10));
+
+ radeon_fifo_wait (1);
+#if defined(__BIG_ENDIAN)
+ OUTREGP(DP_DATATYPE, HOST_BIG_ENDIAN_EN, ~HOST_BIG_ENDIAN_EN);
+#else
+ OUTREGP(DP_DATATYPE, 0, ~HOST_BIG_ENDIAN_EN);
+#endif
+ radeon_fifo_wait (2);
+ OUTREG(DEFAULT_SC_TOP_LEFT, 0);
+ OUTREG(DEFAULT_SC_BOTTOM_RIGHT, (DEFAULT_SC_RIGHT_MAX |
+ DEFAULT_SC_BOTTOM_MAX));
+
+ temp = radeon_get_dstbpp(rinfo->depth);
+ rinfo->dp_gui_master_cntl = ((temp << 8) | GMC_CLR_CMP_CNTL_DIS);
+
+ radeon_fifo_wait (1);
+ OUTREG(DP_GUI_MASTER_CNTL, (rinfo->dp_gui_master_cntl |
+ GMC_BRUSH_SOLID_COLOR |
+ GMC_SRC_DATATYPE_COLOR));
+
+ radeon_fifo_wait (7);
+
+ /* clear line drawing regs */
+ OUTREG(DST_LINE_START, 0);
+ OUTREG(DST_LINE_END, 0);
+
+ /* set brush color regs */
+ OUTREG(DP_BRUSH_FRGD_CLR, 0xffffffff);
+ OUTREG(DP_BRUSH_BKGD_CLR, 0x00000000);
+
+ /* set source color regs */
+ OUTREG(DP_SRC_FRGD_CLR, 0xffffffff);
+ OUTREG(DP_SRC_BKGD_CLR, 0x00000000);
+
+ /* default write mask */
+ OUTREG(DP_WRITE_MSK, 0xffffffff);
+
+ radeon_engine_idle ();
+}
Code Review / kvmfornfv.git / blobdiff