Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/video/aty/mach64_accel.c b/drivers/video/aty/mach64_accel.c
new file mode 100644
index 0000000..c98f4a4
--- /dev/null
+++ b/drivers/video/aty/mach64_accel.c
@@ -0,0 +1,433 @@
+
+/*
+ * ATI Mach64 Hardware Acceleration
+ */
+
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <video/mach64.h>
+#include "atyfb.h"
+
+ /*
+ * Generic Mach64 routines
+ */
+
+/* this is for DMA GUI engine! work in progress */
+typedef struct {
+ u32 frame_buf_offset;
+ u32 system_mem_addr;
+ u32 command;
+ u32 reserved;
+} BM_DESCRIPTOR_ENTRY;
+
+#define LAST_DESCRIPTOR (1 << 31)
+#define SYSTEM_TO_FRAME_BUFFER 0
+
+static u32 rotation24bpp(u32 dx, u32 direction)
+{
+ u32 rotation;
+ if (direction & DST_X_LEFT_TO_RIGHT) {
+ rotation = (dx / 4) % 6;
+ } else {
+ rotation = ((dx + 2) / 4) % 6;
+ }
+
+ return ((rotation << 8) | DST_24_ROTATION_ENABLE);
+}
+
+void aty_reset_engine(const struct atyfb_par *par)
+{
+ /* reset engine */
+ aty_st_le32(GEN_TEST_CNTL,
+ aty_ld_le32(GEN_TEST_CNTL, par) & ~GUI_ENGINE_ENABLE, par);
+ /* enable engine */
+ aty_st_le32(GEN_TEST_CNTL,
+ aty_ld_le32(GEN_TEST_CNTL, par) | GUI_ENGINE_ENABLE, par);
+ /* ensure engine is not locked up by clearing any FIFO or */
+ /* HOST errors */
+ aty_st_le32(BUS_CNTL,
+ aty_ld_le32(BUS_CNTL, par) | BUS_HOST_ERR_ACK | BUS_FIFO_ERR_ACK, par);
+}
+
+static void reset_GTC_3D_engine(const struct atyfb_par *par)
+{
+ aty_st_le32(SCALE_3D_CNTL, 0xc0, par);
+ mdelay(GTC_3D_RESET_DELAY);
+ aty_st_le32(SETUP_CNTL, 0x00, par);
+ mdelay(GTC_3D_RESET_DELAY);
+ aty_st_le32(SCALE_3D_CNTL, 0x00, par);
+ mdelay(GTC_3D_RESET_DELAY);
+}
+
+void aty_init_engine(struct atyfb_par *par, struct fb_info *info)
+{
+ u32 pitch_value;
+
+ /* determine modal information from global mode structure */
+ pitch_value = info->var.xres_virtual;
+
+ if (info->var.bits_per_pixel == 24) {
+ /* In 24 bpp, the engine is in 8 bpp - this requires that all */
+ /* horizontal coordinates and widths must be adjusted */
+ pitch_value *= 3;
+ }
+
+ /* On GTC (RagePro), we need to reset the 3D engine before */
+ if (M64_HAS(RESET_3D))
+ reset_GTC_3D_engine(par);
+
+ /* Reset engine, enable, and clear any engine errors */
+ aty_reset_engine(par);
+ /* Ensure that vga page pointers are set to zero - the upper */
+ /* page pointers are set to 1 to handle overflows in the */
+ /* lower page */
+ aty_st_le32(MEM_VGA_WP_SEL, 0x00010000, par);
+ aty_st_le32(MEM_VGA_RP_SEL, 0x00010000, par);
+
+ /* ---- Setup standard engine context ---- */
+
+ /* All GUI registers here are FIFOed - therefore, wait for */
+ /* the appropriate number of empty FIFO entries */
+ wait_for_fifo(14, par);
+
+ /* enable all registers to be loaded for context loads */
+ aty_st_le32(CONTEXT_MASK, 0xFFFFFFFF, par);
+
+ /* set destination pitch to modal pitch, set offset to zero */
+ aty_st_le32(DST_OFF_PITCH, (pitch_value / 8) << 22, par);
+
+ /* zero these registers (set them to a known state) */
+ aty_st_le32(DST_Y_X, 0, par);
+ aty_st_le32(DST_HEIGHT, 0, par);
+ aty_st_le32(DST_BRES_ERR, 0, par);
+ aty_st_le32(DST_BRES_INC, 0, par);
+ aty_st_le32(DST_BRES_DEC, 0, par);
+
+ /* set destination drawing attributes */
+ aty_st_le32(DST_CNTL, DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
+ DST_X_LEFT_TO_RIGHT, par);
+
+ /* set source pitch to modal pitch, set offset to zero */
+ aty_st_le32(SRC_OFF_PITCH, (pitch_value / 8) << 22, par);
+
+ /* set these registers to a known state */
+ aty_st_le32(SRC_Y_X, 0, par);
+ aty_st_le32(SRC_HEIGHT1_WIDTH1, 1, par);
+ aty_st_le32(SRC_Y_X_START, 0, par);
+ aty_st_le32(SRC_HEIGHT2_WIDTH2, 1, par);
+
+ /* set source pixel retrieving attributes */
+ aty_st_le32(SRC_CNTL, SRC_LINE_X_LEFT_TO_RIGHT, par);
+
+ /* set host attributes */
+ wait_for_fifo(13, par);
+ aty_st_le32(HOST_CNTL, 0, par);
+
+ /* set pattern attributes */
+ aty_st_le32(PAT_REG0, 0, par);
+ aty_st_le32(PAT_REG1, 0, par);
+ aty_st_le32(PAT_CNTL, 0, par);
+
+ /* set scissors to modal size */
+ aty_st_le32(SC_LEFT, 0, par);
+ aty_st_le32(SC_TOP, 0, par);
+ aty_st_le32(SC_BOTTOM, par->crtc.vyres - 1, par);
+ aty_st_le32(SC_RIGHT, pitch_value - 1, par);
+
+ /* set background color to minimum value (usually BLACK) */
+ aty_st_le32(DP_BKGD_CLR, 0, par);
+
+ /* set foreground color to maximum value (usually WHITE) */
+ aty_st_le32(DP_FRGD_CLR, 0xFFFFFFFF, par);
+
+ /* set write mask to effect all pixel bits */
+ aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
+
+ /* set foreground mix to overpaint and background mix to */
+ /* no-effect */
+ aty_st_le32(DP_MIX, FRGD_MIX_S | BKGD_MIX_D, par);
+
+ /* set primary source pixel channel to foreground color */
+ /* register */
+ aty_st_le32(DP_SRC, FRGD_SRC_FRGD_CLR, par);
+
+ /* set compare functionality to false (no-effect on */
+ /* destination) */
+ wait_for_fifo(3, par);
+ aty_st_le32(CLR_CMP_CLR, 0, par);
+ aty_st_le32(CLR_CMP_MASK, 0xFFFFFFFF, par);
+ aty_st_le32(CLR_CMP_CNTL, 0, par);
+
+ /* set pixel depth */
+ wait_for_fifo(2, par);
+ aty_st_le32(DP_PIX_WIDTH, par->crtc.dp_pix_width, par);
+ aty_st_le32(DP_CHAIN_MASK, par->crtc.dp_chain_mask, par);
+
+ wait_for_fifo(5, par);
+ aty_st_le32(SCALE_3D_CNTL, 0, par);
+ aty_st_le32(Z_CNTL, 0, par);
+ aty_st_le32(CRTC_INT_CNTL, aty_ld_le32(CRTC_INT_CNTL, par) & ~0x20,
+ par);
+ aty_st_le32(GUI_TRAJ_CNTL, 0x100023, par);
+
+ /* insure engine is idle before leaving */
+ wait_for_idle(par);
+}
+
+ /*
+ * Accelerated functions
+ */
+
+static inline void draw_rect(s16 x, s16 y, u16 width, u16 height,
+ struct atyfb_par *par)
+{
+ /* perform rectangle fill */
+ wait_for_fifo(2, par);
+ aty_st_le32(DST_Y_X, (x << 16) | y, par);
+ aty_st_le32(DST_HEIGHT_WIDTH, (width << 16) | height, par);
+ par->blitter_may_be_busy = 1;
+}
+
+void atyfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ struct atyfb_par *par = (struct atyfb_par *) info->par;
+ u32 dy = area->dy, sy = area->sy, direction = DST_LAST_PEL;
+ u32 sx = area->sx, dx = area->dx, width = area->width, rotation = 0;
+
+ if (par->asleep)
+ return;
+ if (!area->width || !area->height)
+ return;
+ if (!par->accel_flags) {
+ if (par->blitter_may_be_busy)
+ wait_for_idle(par);
+ cfb_copyarea(info, area);
+ return;
+ }
+
+ if (info->var.bits_per_pixel == 24) {
+ /* In 24 bpp, the engine is in 8 bpp - this requires that all */
+ /* horizontal coordinates and widths must be adjusted */
+ sx *= 3;
+ dx *= 3;
+ width *= 3;
+ }
+
+ if (area->sy < area->dy) {
+ dy += area->height - 1;
+ sy += area->height - 1;
+ } else
+ direction |= DST_Y_TOP_TO_BOTTOM;
+
+ if (sx < dx) {
+ dx += width - 1;
+ sx += width - 1;
+ } else
+ direction |= DST_X_LEFT_TO_RIGHT;
+
+ if (info->var.bits_per_pixel == 24) {
+ rotation = rotation24bpp(dx, direction);
+ }
+
+ wait_for_fifo(4, par);
+ aty_st_le32(DP_SRC, FRGD_SRC_BLIT, par);
+ aty_st_le32(SRC_Y_X, (sx << 16) | sy, par);
+ aty_st_le32(SRC_HEIGHT1_WIDTH1, (width << 16) | area->height, par);
+ aty_st_le32(DST_CNTL, direction | rotation, par);
+ draw_rect(dx, dy, width, area->height, par);
+}
+
+void atyfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ struct atyfb_par *par = (struct atyfb_par *) info->par;
+ u32 color = rect->color, dx = rect->dx, width = rect->width, rotation = 0;
+
+ if (par->asleep)
+ return;
+ if (!rect->width || !rect->height)
+ return;
+ if (!par->accel_flags) {
+ if (par->blitter_may_be_busy)
+ wait_for_idle(par);
+ cfb_fillrect(info, rect);
+ return;
+ }
+
+ color |= (rect->color << 8);
+ color |= (rect->color << 16);
+
+ if (info->var.bits_per_pixel == 24) {
+ /* In 24 bpp, the engine is in 8 bpp - this requires that all */
+ /* horizontal coordinates and widths must be adjusted */
+ dx *= 3;
+ width *= 3;
+ rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
+ }
+
+ wait_for_fifo(3, par);
+ aty_st_le32(DP_FRGD_CLR, color, par);
+ aty_st_le32(DP_SRC,
+ BKGD_SRC_BKGD_CLR | FRGD_SRC_FRGD_CLR | MONO_SRC_ONE,
+ par);
+ aty_st_le32(DST_CNTL,
+ DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
+ DST_X_LEFT_TO_RIGHT | rotation, par);
+ draw_rect(dx, rect->dy, width, rect->height, par);
+}
+
+void atyfb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+ struct atyfb_par *par = (struct atyfb_par *) info->par;
+ u32 src_bytes, dx = image->dx, dy = image->dy, width = image->width;
+ u32 pix_width_save, pix_width, host_cntl, rotation = 0, src, mix;
+
+ if (par->asleep)
+ return;
+ if (!image->width || !image->height)
+ return;
+ if (!par->accel_flags ||
+ (image->depth != 1 && info->var.bits_per_pixel != image->depth)) {
+ if (par->blitter_may_be_busy)
+ wait_for_idle(par);
+
+ cfb_imageblit(info, image);
+ return;
+ }
+
+ wait_for_idle(par);
+ pix_width = pix_width_save = aty_ld_le32(DP_PIX_WIDTH, par);
+ host_cntl = aty_ld_le32(HOST_CNTL, par) | HOST_BYTE_ALIGN;
+
+ switch (image->depth) {
+ case 1:
+ pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
+ pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_1BPP);
+ break;
+ case 4:
+ pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
+ pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_4BPP);
+ break;
+ case 8:
+ pix_width &= ~HOST_MASK;
+ pix_width |= HOST_8BPP;
+ break;
+ case 15:
+ pix_width &= ~HOST_MASK;
+ pix_width |= HOST_15BPP;
+ break;
+ case 16:
+ pix_width &= ~HOST_MASK;
+ pix_width |= HOST_16BPP;
+ break;
+ case 24:
+ pix_width &= ~HOST_MASK;
+ pix_width |= HOST_24BPP;
+ break;
+ case 32:
+ pix_width &= ~HOST_MASK;
+ pix_width |= HOST_32BPP;
+ break;
+ }
+
+ if (info->var.bits_per_pixel == 24) {
+ /* In 24 bpp, the engine is in 8 bpp - this requires that all */
+ /* horizontal coordinates and widths must be adjusted */
+ dx *= 3;
+ width *= 3;
+
+ rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
+
+ pix_width &= ~DST_MASK;
+ pix_width |= DST_8BPP;
+
+ /*
+ * since Rage 3D IIc we have DP_HOST_TRIPLE_EN bit
+ * this hwaccelerated triple has an issue with not aligned data
+ */
+ if (M64_HAS(HW_TRIPLE) && image->width % 8 == 0)
+ pix_width |= DP_HOST_TRIPLE_EN;
+ }
+
+ if (image->depth == 1) {
+ u32 fg, bg;
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ fg = ((u32*)(info->pseudo_palette))[image->fg_color];
+ bg = ((u32*)(info->pseudo_palette))[image->bg_color];
+ } else {
+ fg = image->fg_color;
+ bg = image->bg_color;
+ }
+
+ wait_for_fifo(2, par);
+ aty_st_le32(DP_BKGD_CLR, bg, par);
+ aty_st_le32(DP_FRGD_CLR, fg, par);
+ src = MONO_SRC_HOST | FRGD_SRC_FRGD_CLR | BKGD_SRC_BKGD_CLR;
+ mix = FRGD_MIX_S | BKGD_MIX_S;
+ } else {
+ src = MONO_SRC_ONE | FRGD_SRC_HOST;
+ mix = FRGD_MIX_D_XOR_S | BKGD_MIX_D;
+ }
+
+ wait_for_fifo(6, par);
+ aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
+ aty_st_le32(DP_PIX_WIDTH, pix_width, par);
+ aty_st_le32(DP_MIX, mix, par);
+ aty_st_le32(DP_SRC, src, par);
+ aty_st_le32(HOST_CNTL, host_cntl, par);
+ aty_st_le32(DST_CNTL, DST_Y_TOP_TO_BOTTOM | DST_X_LEFT_TO_RIGHT | rotation, par);
+
+ draw_rect(dx, dy, width, image->height, par);
+ src_bytes = (((image->width * image->depth) + 7) / 8) * image->height;
+
+ /* manual triple each pixel */
+ if (info->var.bits_per_pixel == 24 && !(pix_width & DP_HOST_TRIPLE_EN)) {
+ int inbit, outbit, mult24, byte_id_in_dword, width;
+ u8 *pbitmapin = (u8*)image->data, *pbitmapout;
+ u32 hostdword;
+
+ for (width = image->width, inbit = 7, mult24 = 0; src_bytes; ) {
+ for (hostdword = 0, pbitmapout = (u8*)&hostdword, byte_id_in_dword = 0;
+ byte_id_in_dword < 4 && src_bytes;
+ byte_id_in_dword++, pbitmapout++) {
+ for (outbit = 7; outbit >= 0; outbit--) {
+ *pbitmapout |= (((*pbitmapin >> inbit) & 1) << outbit);
+ mult24++;
+ /* next bit */
+ if (mult24 == 3) {
+ mult24 = 0;
+ inbit--;
+ width--;
+ }
+
+ /* next byte */
+ if (inbit < 0 || width == 0) {
+ src_bytes--;
+ pbitmapin++;
+ inbit = 7;
+
+ if (width == 0) {
+ width = image->width;
+ outbit = 0;
+ }
+ }
+ }
+ }
+ wait_for_fifo(1, par);
+ aty_st_le32(HOST_DATA0, hostdword, par);
+ }
+ } else {
+ u32 *pbitmap, dwords = (src_bytes + 3) / 4;
+ for (pbitmap = (u32*)(image->data); dwords; dwords--, pbitmap++) {
+ wait_for_fifo(1, par);
+ aty_st_le32(HOST_DATA0, le32_to_cpup(pbitmap), par);
+ }
+ }
+
+ wait_for_idle(par);
+
+ /* restore pix_width */
+ wait_for_fifo(1, par);
+ aty_st_le32(DP_PIX_WIDTH, pix_width_save, par);
+}