431 lines
12 KiB
C
431 lines
12 KiB
C
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/*
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* ATI Mach64 Hardware Acceleration
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*/
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#include <linux/delay.h>
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#include <asm/unaligned.h>
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#include <linux/fb.h>
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#include <video/mach64.h>
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#include "atyfb.h"
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/*
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* Generic Mach64 routines
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*/
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/* this is for DMA GUI engine! work in progress */
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typedef struct {
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u32 frame_buf_offset;
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u32 system_mem_addr;
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u32 command;
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u32 reserved;
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} BM_DESCRIPTOR_ENTRY;
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#define LAST_DESCRIPTOR (1 << 31)
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#define SYSTEM_TO_FRAME_BUFFER 0
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static u32 rotation24bpp(u32 dx, u32 direction)
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{
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u32 rotation;
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if (direction & DST_X_LEFT_TO_RIGHT) {
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rotation = (dx / 4) % 6;
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} else {
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rotation = ((dx + 2) / 4) % 6;
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}
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return ((rotation << 8) | DST_24_ROTATION_ENABLE);
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}
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void aty_reset_engine(const struct atyfb_par *par)
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{
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/* reset engine */
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aty_st_le32(GEN_TEST_CNTL,
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aty_ld_le32(GEN_TEST_CNTL, par) &
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~(GUI_ENGINE_ENABLE | HWCURSOR_ENABLE), par);
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/* enable engine */
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aty_st_le32(GEN_TEST_CNTL,
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aty_ld_le32(GEN_TEST_CNTL, par) | GUI_ENGINE_ENABLE, par);
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/* ensure engine is not locked up by clearing any FIFO or */
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/* HOST errors */
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aty_st_le32(BUS_CNTL,
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aty_ld_le32(BUS_CNTL, par) | BUS_HOST_ERR_ACK | BUS_FIFO_ERR_ACK, par);
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}
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static void reset_GTC_3D_engine(const struct atyfb_par *par)
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{
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aty_st_le32(SCALE_3D_CNTL, 0xc0, par);
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mdelay(GTC_3D_RESET_DELAY);
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aty_st_le32(SETUP_CNTL, 0x00, par);
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mdelay(GTC_3D_RESET_DELAY);
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aty_st_le32(SCALE_3D_CNTL, 0x00, par);
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mdelay(GTC_3D_RESET_DELAY);
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}
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void aty_init_engine(struct atyfb_par *par, struct fb_info *info)
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{
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u32 pitch_value;
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u32 vxres;
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/* determine modal information from global mode structure */
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pitch_value = info->fix.line_length / (info->var.bits_per_pixel / 8);
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vxres = info->var.xres_virtual;
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if (info->var.bits_per_pixel == 24) {
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/* In 24 bpp, the engine is in 8 bpp - this requires that all */
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/* horizontal coordinates and widths must be adjusted */
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pitch_value *= 3;
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vxres *= 3;
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}
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/* On GTC (RagePro), we need to reset the 3D engine before */
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if (M64_HAS(RESET_3D))
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reset_GTC_3D_engine(par);
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/* Reset engine, enable, and clear any engine errors */
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aty_reset_engine(par);
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/* Ensure that vga page pointers are set to zero - the upper */
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/* page pointers are set to 1 to handle overflows in the */
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/* lower page */
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aty_st_le32(MEM_VGA_WP_SEL, 0x00010000, par);
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aty_st_le32(MEM_VGA_RP_SEL, 0x00010000, par);
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/* ---- Setup standard engine context ---- */
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/* All GUI registers here are FIFOed - therefore, wait for */
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/* the appropriate number of empty FIFO entries */
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wait_for_fifo(14, par);
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/* enable all registers to be loaded for context loads */
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aty_st_le32(CONTEXT_MASK, 0xFFFFFFFF, par);
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/* set destination pitch to modal pitch, set offset to zero */
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aty_st_le32(DST_OFF_PITCH, (pitch_value / 8) << 22, par);
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/* zero these registers (set them to a known state) */
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aty_st_le32(DST_Y_X, 0, par);
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aty_st_le32(DST_HEIGHT, 0, par);
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aty_st_le32(DST_BRES_ERR, 0, par);
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aty_st_le32(DST_BRES_INC, 0, par);
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aty_st_le32(DST_BRES_DEC, 0, par);
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/* set destination drawing attributes */
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aty_st_le32(DST_CNTL, DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
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DST_X_LEFT_TO_RIGHT, par);
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/* set source pitch to modal pitch, set offset to zero */
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aty_st_le32(SRC_OFF_PITCH, (pitch_value / 8) << 22, par);
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/* set these registers to a known state */
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aty_st_le32(SRC_Y_X, 0, par);
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aty_st_le32(SRC_HEIGHT1_WIDTH1, 1, par);
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aty_st_le32(SRC_Y_X_START, 0, par);
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aty_st_le32(SRC_HEIGHT2_WIDTH2, 1, par);
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/* set source pixel retrieving attributes */
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aty_st_le32(SRC_CNTL, SRC_LINE_X_LEFT_TO_RIGHT, par);
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/* set host attributes */
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wait_for_fifo(13, par);
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aty_st_le32(HOST_CNTL, 0, par);
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/* set pattern attributes */
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aty_st_le32(PAT_REG0, 0, par);
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aty_st_le32(PAT_REG1, 0, par);
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aty_st_le32(PAT_CNTL, 0, par);
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/* set scissors to modal size */
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aty_st_le32(SC_LEFT, 0, par);
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aty_st_le32(SC_TOP, 0, par);
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aty_st_le32(SC_BOTTOM, par->crtc.vyres - 1, par);
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aty_st_le32(SC_RIGHT, vxres - 1, par);
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/* set background color to minimum value (usually BLACK) */
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aty_st_le32(DP_BKGD_CLR, 0, par);
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/* set foreground color to maximum value (usually WHITE) */
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aty_st_le32(DP_FRGD_CLR, 0xFFFFFFFF, par);
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/* set write mask to effect all pixel bits */
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aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
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/* set foreground mix to overpaint and background mix to */
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/* no-effect */
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aty_st_le32(DP_MIX, FRGD_MIX_S | BKGD_MIX_D, par);
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/* set primary source pixel channel to foreground color */
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/* register */
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aty_st_le32(DP_SRC, FRGD_SRC_FRGD_CLR, par);
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/* set compare functionality to false (no-effect on */
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/* destination) */
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wait_for_fifo(3, par);
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aty_st_le32(CLR_CMP_CLR, 0, par);
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aty_st_le32(CLR_CMP_MASK, 0xFFFFFFFF, par);
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aty_st_le32(CLR_CMP_CNTL, 0, par);
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/* set pixel depth */
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wait_for_fifo(2, par);
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aty_st_le32(DP_PIX_WIDTH, par->crtc.dp_pix_width, par);
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aty_st_le32(DP_CHAIN_MASK, par->crtc.dp_chain_mask, par);
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wait_for_fifo(5, par);
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aty_st_le32(SCALE_3D_CNTL, 0, par);
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aty_st_le32(Z_CNTL, 0, par);
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aty_st_le32(CRTC_INT_CNTL, aty_ld_le32(CRTC_INT_CNTL, par) & ~0x20,
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par);
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aty_st_le32(GUI_TRAJ_CNTL, 0x100023, par);
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/* insure engine is idle before leaving */
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wait_for_idle(par);
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}
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/*
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* Accelerated functions
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*/
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static inline void draw_rect(s16 x, s16 y, u16 width, u16 height,
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struct atyfb_par *par)
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{
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/* perform rectangle fill */
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wait_for_fifo(2, par);
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aty_st_le32(DST_Y_X, (x << 16) | y, par);
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aty_st_le32(DST_HEIGHT_WIDTH, (width << 16) | height, par);
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par->blitter_may_be_busy = 1;
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}
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void atyfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 dy = area->dy, sy = area->sy, direction = DST_LAST_PEL;
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u32 sx = area->sx, dx = area->dx, width = area->width, rotation = 0;
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if (par->asleep)
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return;
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if (!area->width || !area->height)
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return;
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if (!par->accel_flags) {
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cfb_copyarea(info, area);
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return;
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}
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if (info->var.bits_per_pixel == 24) {
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/* In 24 bpp, the engine is in 8 bpp - this requires that all */
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/* horizontal coordinates and widths must be adjusted */
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sx *= 3;
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dx *= 3;
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width *= 3;
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}
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if (area->sy < area->dy) {
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dy += area->height - 1;
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sy += area->height - 1;
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} else
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direction |= DST_Y_TOP_TO_BOTTOM;
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if (sx < dx) {
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dx += width - 1;
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sx += width - 1;
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} else
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direction |= DST_X_LEFT_TO_RIGHT;
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if (info->var.bits_per_pixel == 24) {
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rotation = rotation24bpp(dx, direction);
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}
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wait_for_fifo(4, par);
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aty_st_le32(DP_SRC, FRGD_SRC_BLIT, par);
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aty_st_le32(SRC_Y_X, (sx << 16) | sy, par);
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aty_st_le32(SRC_HEIGHT1_WIDTH1, (width << 16) | area->height, par);
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aty_st_le32(DST_CNTL, direction | rotation, par);
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draw_rect(dx, dy, width, area->height, par);
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}
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void atyfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 color, dx = rect->dx, width = rect->width, rotation = 0;
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if (par->asleep)
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return;
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if (!rect->width || !rect->height)
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return;
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if (!par->accel_flags) {
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cfb_fillrect(info, rect);
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return;
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}
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if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
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info->fix.visual == FB_VISUAL_DIRECTCOLOR)
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color = ((u32 *)(info->pseudo_palette))[rect->color];
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else
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color = rect->color;
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if (info->var.bits_per_pixel == 24) {
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/* In 24 bpp, the engine is in 8 bpp - this requires that all */
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/* horizontal coordinates and widths must be adjusted */
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dx *= 3;
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width *= 3;
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rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
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}
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wait_for_fifo(3, par);
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aty_st_le32(DP_FRGD_CLR, color, par);
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aty_st_le32(DP_SRC,
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BKGD_SRC_BKGD_CLR | FRGD_SRC_FRGD_CLR | MONO_SRC_ONE,
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par);
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aty_st_le32(DST_CNTL,
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DST_LAST_PEL | DST_Y_TOP_TO_BOTTOM |
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DST_X_LEFT_TO_RIGHT | rotation, par);
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draw_rect(dx, rect->dy, width, rect->height, par);
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}
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void atyfb_imageblit(struct fb_info *info, const struct fb_image *image)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 src_bytes, dx = image->dx, dy = image->dy, width = image->width;
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u32 pix_width_save, pix_width, host_cntl, rotation = 0, src, mix;
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if (par->asleep)
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return;
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if (!image->width || !image->height)
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return;
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if (!par->accel_flags ||
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(image->depth != 1 && info->var.bits_per_pixel != image->depth)) {
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cfb_imageblit(info, image);
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return;
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}
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pix_width = pix_width_save = aty_ld_le32(DP_PIX_WIDTH, par);
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host_cntl = aty_ld_le32(HOST_CNTL, par) | HOST_BYTE_ALIGN;
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switch (image->depth) {
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case 1:
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pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
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pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_1BPP);
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break;
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case 4:
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pix_width &= ~(BYTE_ORDER_MASK | HOST_MASK);
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pix_width |= (BYTE_ORDER_MSB_TO_LSB | HOST_4BPP);
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break;
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case 8:
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pix_width &= ~HOST_MASK;
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pix_width |= HOST_8BPP;
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break;
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case 15:
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pix_width &= ~HOST_MASK;
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pix_width |= HOST_15BPP;
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break;
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case 16:
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pix_width &= ~HOST_MASK;
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pix_width |= HOST_16BPP;
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break;
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case 24:
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pix_width &= ~HOST_MASK;
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pix_width |= HOST_24BPP;
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break;
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case 32:
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pix_width &= ~HOST_MASK;
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pix_width |= HOST_32BPP;
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break;
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}
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if (info->var.bits_per_pixel == 24) {
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/* In 24 bpp, the engine is in 8 bpp - this requires that all */
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/* horizontal coordinates and widths must be adjusted */
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dx *= 3;
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width *= 3;
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rotation = rotation24bpp(dx, DST_X_LEFT_TO_RIGHT);
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pix_width &= ~DST_MASK;
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pix_width |= DST_8BPP;
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/*
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* since Rage 3D IIc we have DP_HOST_TRIPLE_EN bit
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* this hwaccelerated triple has an issue with not aligned data
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*/
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if (M64_HAS(HW_TRIPLE) && image->width % 8 == 0)
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pix_width |= DP_HOST_TRIPLE_EN;
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}
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if (image->depth == 1) {
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u32 fg, bg;
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if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
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info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
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fg = ((u32*)(info->pseudo_palette))[image->fg_color];
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bg = ((u32*)(info->pseudo_palette))[image->bg_color];
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} else {
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fg = image->fg_color;
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bg = image->bg_color;
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}
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wait_for_fifo(2, par);
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aty_st_le32(DP_BKGD_CLR, bg, par);
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aty_st_le32(DP_FRGD_CLR, fg, par);
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src = MONO_SRC_HOST | FRGD_SRC_FRGD_CLR | BKGD_SRC_BKGD_CLR;
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mix = FRGD_MIX_S | BKGD_MIX_S;
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} else {
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src = MONO_SRC_ONE | FRGD_SRC_HOST;
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mix = FRGD_MIX_D_XOR_S | BKGD_MIX_D;
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}
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wait_for_fifo(6, par);
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aty_st_le32(DP_WRITE_MASK, 0xFFFFFFFF, par);
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aty_st_le32(DP_PIX_WIDTH, pix_width, par);
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aty_st_le32(DP_MIX, mix, par);
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aty_st_le32(DP_SRC, src, par);
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aty_st_le32(HOST_CNTL, host_cntl, par);
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aty_st_le32(DST_CNTL, DST_Y_TOP_TO_BOTTOM | DST_X_LEFT_TO_RIGHT | rotation, par);
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draw_rect(dx, dy, width, image->height, par);
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src_bytes = (((image->width * image->depth) + 7) / 8) * image->height;
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/* manual triple each pixel */
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if (info->var.bits_per_pixel == 24 && !(pix_width & DP_HOST_TRIPLE_EN)) {
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int inbit, outbit, mult24, byte_id_in_dword, width;
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u8 *pbitmapin = (u8*)image->data, *pbitmapout;
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u32 hostdword;
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for (width = image->width, inbit = 7, mult24 = 0; src_bytes; ) {
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for (hostdword = 0, pbitmapout = (u8*)&hostdword, byte_id_in_dword = 0;
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byte_id_in_dword < 4 && src_bytes;
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byte_id_in_dword++, pbitmapout++) {
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for (outbit = 7; outbit >= 0; outbit--) {
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*pbitmapout |= (((*pbitmapin >> inbit) & 1) << outbit);
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mult24++;
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/* next bit */
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if (mult24 == 3) {
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mult24 = 0;
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inbit--;
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width--;
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}
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/* next byte */
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if (inbit < 0 || width == 0) {
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src_bytes--;
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pbitmapin++;
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inbit = 7;
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if (width == 0) {
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width = image->width;
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outbit = 0;
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}
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}
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}
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}
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wait_for_fifo(1, par);
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aty_st_le32(HOST_DATA0, hostdword, par);
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}
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} else {
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u32 *pbitmap, dwords = (src_bytes + 3) / 4;
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for (pbitmap = (u32*)(image->data); dwords; dwords--, pbitmap++) {
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wait_for_fifo(1, par);
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aty_st_le32(HOST_DATA0, get_unaligned_le32(pbitmap), par);
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}
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}
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/* restore pix_width */
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wait_for_fifo(1, par);
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aty_st_le32(DP_PIX_WIDTH, pix_width_save, par);
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}
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