diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_legacy_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_legacy_crtc.c | 1276 |
1 files changed, 1276 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c new file mode 100644 index 000000000000..8086ecf7f03d --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c @@ -0,0 +1,1276 @@ +/* + * Copyright 2007-8 Advanced Micro Devices, Inc. + * Copyright 2008 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Dave Airlie + * Alex Deucher + */ +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> +#include <drm/radeon_drm.h> +#include "radeon_fixed.h" +#include "radeon.h" + +void radeon_restore_common_regs(struct drm_device *dev) +{ + /* don't need this yet */ +} + +static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + int i = 0; + + /* FIXME: Certain revisions of R300 can't recover here. Not sure of + the cause yet, but this workaround will mask the problem for now. + Other chips usually will pass at the very first test, so the + workaround shouldn't have any effect on them. */ + for (i = 0; + (i < 10000 && + RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R); + i++); +} + +static void radeon_pll_write_update(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + + while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R); + + WREG32_PLL_P(RADEON_PPLL_REF_DIV, + RADEON_PPLL_ATOMIC_UPDATE_W, + ~(RADEON_PPLL_ATOMIC_UPDATE_W)); +} + +static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + int i = 0; + + + /* FIXME: Certain revisions of R300 can't recover here. Not sure of + the cause yet, but this workaround will mask the problem for now. + Other chips usually will pass at the very first test, so the + workaround shouldn't have any effect on them. */ + for (i = 0; + (i < 10000 && + RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R); + i++); +} + +static void radeon_pll2_write_update(struct drm_device *dev) +{ + struct radeon_device *rdev = dev->dev_private; + + while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R); + + WREG32_PLL_P(RADEON_P2PLL_REF_DIV, + RADEON_P2PLL_ATOMIC_UPDATE_W, + ~(RADEON_P2PLL_ATOMIC_UPDATE_W)); +} + +static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div, + uint16_t fb_div) +{ + unsigned int vcoFreq; + + if (!ref_div) + return 1; + + vcoFreq = ((unsigned)ref_freq & fb_div) / ref_div; + + /* + * This is horribly crude: the VCO frequency range is divided into + * 3 parts, each part having a fixed PLL gain value. + */ + if (vcoFreq >= 30000) + /* + * [300..max] MHz : 7 + */ + return 7; + else if (vcoFreq >= 18000) + /* + * [180..300) MHz : 4 + */ + return 4; + else + /* + * [0..180) MHz : 1 + */ + return 1; +} + +void radeon_crtc_dpms(struct drm_crtc *crtc, int mode) +{ + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + uint32_t mask; + + if (radeon_crtc->crtc_id) + mask = (RADEON_CRTC2_EN | + RADEON_CRTC2_DISP_DIS | + RADEON_CRTC2_VSYNC_DIS | + RADEON_CRTC2_HSYNC_DIS | + RADEON_CRTC2_DISP_REQ_EN_B); + else + mask = (RADEON_CRTC_DISPLAY_DIS | + RADEON_CRTC_VSYNC_DIS | + RADEON_CRTC_HSYNC_DIS); + + switch (mode) { + case DRM_MODE_DPMS_ON: + if (radeon_crtc->crtc_id) + WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~mask); + else { + WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN | + RADEON_CRTC_DISP_REQ_EN_B)); + WREG32_P(RADEON_CRTC_EXT_CNTL, 0, ~mask); + } + break; + case DRM_MODE_DPMS_STANDBY: + case DRM_MODE_DPMS_SUSPEND: + case DRM_MODE_DPMS_OFF: + if (radeon_crtc->crtc_id) + WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~mask); + else { + WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN | + RADEON_CRTC_DISP_REQ_EN_B)); + WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~mask); + } + break; + } + + if (mode != DRM_MODE_DPMS_OFF) { + radeon_crtc_load_lut(crtc); + } +} + +/* properly set crtc bpp when using atombios */ +void radeon_legacy_atom_set_surface(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + int format; + uint32_t crtc_gen_cntl; + uint32_t disp_merge_cntl; + uint32_t crtc_pitch; + + switch (crtc->fb->bits_per_pixel) { + case 15: /* 555 */ + format = 3; + break; + case 16: /* 565 */ + format = 4; + break; + case 24: /* RGB */ + format = 5; + break; + case 32: /* xRGB */ + format = 6; + break; + default: + return; + } + + crtc_pitch = ((((crtc->fb->pitch / (crtc->fb->bits_per_pixel / 8)) * crtc->fb->bits_per_pixel) + + ((crtc->fb->bits_per_pixel * 8) - 1)) / + (crtc->fb->bits_per_pixel * 8)); + crtc_pitch |= crtc_pitch << 16; + + WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch); + + switch (radeon_crtc->crtc_id) { + case 0: + disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL); + disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN; + WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl); + + crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0xfffff0ff; + crtc_gen_cntl |= (format << 8); + crtc_gen_cntl |= RADEON_CRTC_EXT_DISP_EN; + WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl); + break; + case 1: + disp_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL); + disp_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN; + WREG32(RADEON_DISP2_MERGE_CNTL, disp_merge_cntl); + + crtc_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0xfffff0ff; + crtc_gen_cntl |= (format << 8); + WREG32(RADEON_CRTC2_GEN_CNTL, crtc_gen_cntl); + WREG32(RADEON_FP_H2_SYNC_STRT_WID, RREG32(RADEON_CRTC2_H_SYNC_STRT_WID)); + WREG32(RADEON_FP_V2_SYNC_STRT_WID, RREG32(RADEON_CRTC2_V_SYNC_STRT_WID)); + break; + } +} + +int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct radeon_framebuffer *radeon_fb; + struct drm_gem_object *obj; + uint64_t base; + uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0; + uint32_t crtc_pitch, pitch_pixels; + + DRM_DEBUG("\n"); + + radeon_fb = to_radeon_framebuffer(crtc->fb); + + obj = radeon_fb->obj; + if (radeon_gem_object_pin(obj, RADEON_GEM_DOMAIN_VRAM, &base)) { + return -EINVAL; + } + crtc_offset = (u32)base; + crtc_offset_cntl = 0; + + pitch_pixels = crtc->fb->pitch / (crtc->fb->bits_per_pixel / 8); + crtc_pitch = (((pitch_pixels * crtc->fb->bits_per_pixel) + + ((crtc->fb->bits_per_pixel * 8) - 1)) / + (crtc->fb->bits_per_pixel * 8)); + crtc_pitch |= crtc_pitch << 16; + + /* TODO tiling */ + if (0) { + if (ASIC_IS_R300(rdev)) + crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN | + R300_CRTC_MICRO_TILE_BUFFER_DIS | + R300_CRTC_MACRO_TILE_EN); + else + crtc_offset_cntl |= RADEON_CRTC_TILE_EN; + } else { + if (ASIC_IS_R300(rdev)) + crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN | + R300_CRTC_MICRO_TILE_BUFFER_DIS | + R300_CRTC_MACRO_TILE_EN); + else + crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN; + } + + + /* TODO more tiling */ + if (0) { + if (ASIC_IS_R300(rdev)) { + crtc_tile_x0_y0 = x | (y << 16); + base &= ~0x7ff; + } else { + int byteshift = crtc->fb->bits_per_pixel >> 4; + int tile_addr = (((y >> 3) * crtc->fb->width + x) >> (8 - byteshift)) << 11; + base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8); + crtc_offset_cntl |= (y % 16); + } + } else { + int offset = y * pitch_pixels + x; + switch (crtc->fb->bits_per_pixel) { + case 15: + case 16: + offset *= 2; + break; + case 24: + offset *= 3; + break; + case 32: + offset *= 4; + break; + default: + return false; + } + base += offset; + } + + base &= ~7; + + /* update sarea TODO */ + + crtc_offset = (u32)base; + + WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, rdev->mc.vram_location); + + if (ASIC_IS_R300(rdev)) { + if (radeon_crtc->crtc_id) + WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0); + else + WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0); + } + WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl); + WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset); + WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch); + + if (old_fb && old_fb != crtc->fb) { + radeon_fb = to_radeon_framebuffer(old_fb); + radeon_gem_object_unpin(radeon_fb->obj); + } + return 0; +} + +static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode) +{ + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + int format; + int hsync_start; + int hsync_wid; + int vsync_wid; + uint32_t crtc_h_total_disp; + uint32_t crtc_h_sync_strt_wid; + uint32_t crtc_v_total_disp; + uint32_t crtc_v_sync_strt_wid; + + DRM_DEBUG("\n"); + + switch (crtc->fb->bits_per_pixel) { + case 15: /* 555 */ + format = 3; + break; + case 16: /* 565 */ + format = 4; + break; + case 24: /* RGB */ + format = 5; + break; + case 32: /* xRGB */ + format = 6; + break; + default: + return false; + } + + crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff) + | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16)); + + hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8; + if (!hsync_wid) + hsync_wid = 1; + hsync_start = mode->crtc_hsync_start - 8; + + crtc_h_sync_strt_wid = ((hsync_start & 0x1fff) + | ((hsync_wid & 0x3f) << 16) + | ((mode->flags & DRM_MODE_FLAG_NHSYNC) + ? RADEON_CRTC_H_SYNC_POL + : 0)); + + /* This works for double scan mode. */ + crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff) + | ((mode->crtc_vdisplay - 1) << 16)); + + vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start; + if (!vsync_wid) + vsync_wid = 1; + + crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff) + | ((vsync_wid & 0x1f) << 16) + | ((mode->flags & DRM_MODE_FLAG_NVSYNC) + ? RADEON_CRTC_V_SYNC_POL + : 0)); + + /* TODO -> Dell Server */ + if (0) { + uint32_t disp_hw_debug = RREG32(RADEON_DISP_HW_DEBUG); + uint32_t tv_dac_cntl = RREG32(RADEON_TV_DAC_CNTL); + uint32_t dac2_cntl = RREG32(RADEON_DAC_CNTL2); + uint32_t crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL); + + dac2_cntl &= ~RADEON_DAC2_DAC_CLK_SEL; + dac2_cntl |= RADEON_DAC2_DAC2_CLK_SEL; + + /* For CRT on DAC2, don't turn it on if BIOS didn't + enable it, even it's detected. + */ + disp_hw_debug |= RADEON_CRT2_DISP1_SEL; + tv_dac_cntl &= ~((1<<2) | (3<<8) | (7<<24) | (0xff<<16)); + tv_dac_cntl |= (0x03 | (2<<8) | (0x58<<16)); + + WREG32(RADEON_TV_DAC_CNTL, tv_dac_cntl); + WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug); + WREG32(RADEON_DAC_CNTL2, dac2_cntl); + WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl); + } + + if (radeon_crtc->crtc_id) { + uint32_t crtc2_gen_cntl; + uint32_t disp2_merge_cntl; + + /* check to see if TV DAC is enabled for another crtc and keep it enabled */ + if (RREG32(RADEON_CRTC2_GEN_CNTL) & RADEON_CRTC2_CRT2_ON) + crtc2_gen_cntl = RADEON_CRTC2_CRT2_ON; + else + crtc2_gen_cntl = 0; + + crtc2_gen_cntl |= ((format << 8) + | RADEON_CRTC2_VSYNC_DIS + | RADEON_CRTC2_HSYNC_DIS + | RADEON_CRTC2_DISP_DIS + | RADEON_CRTC2_DISP_REQ_EN_B + | ((mode->flags & DRM_MODE_FLAG_DBLSCAN) + ? RADEON_CRTC2_DBL_SCAN_EN + : 0) + | ((mode->flags & DRM_MODE_FLAG_CSYNC) + ? RADEON_CRTC2_CSYNC_EN + : 0) + | ((mode->flags & DRM_MODE_FLAG_INTERLACE) + ? RADEON_CRTC2_INTERLACE_EN + : 0)); + + disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL); + disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN; + + WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl); + WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl); + } else { + uint32_t crtc_gen_cntl; + uint32_t crtc_ext_cntl; + uint32_t disp_merge_cntl; + + crtc_gen_cntl = (RADEON_CRTC_EXT_DISP_EN + | (format << 8) + | RADEON_CRTC_DISP_REQ_EN_B + | ((mode->flags & DRM_MODE_FLAG_DBLSCAN) + ? RADEON_CRTC_DBL_SCAN_EN + : 0) + | ((mode->flags & DRM_MODE_FLAG_CSYNC) + ? RADEON_CRTC_CSYNC_EN + : 0) + | ((mode->flags & DRM_MODE_FLAG_INTERLACE) + ? RADEON_CRTC_INTERLACE_EN + : 0)); + + crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL); + crtc_ext_cntl |= (RADEON_XCRT_CNT_EN | + RADEON_CRTC_VSYNC_DIS | + RADEON_CRTC_HSYNC_DIS | + RADEON_CRTC_DISPLAY_DIS); + + disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL); + disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN; + + WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl); + WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl); + WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl); + } + + WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp); + WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid); + WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp); + WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid); + + return true; +} + +static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) +{ + struct drm_device *dev = crtc->dev; + struct radeon_device *rdev = dev->dev_private; + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct drm_encoder *encoder; + uint32_t feedback_div = 0; + uint32_t frac_fb_div = 0; + uint32_t reference_div = 0; + uint32_t post_divider = 0; + uint32_t freq = 0; + uint8_t pll_gain; + int pll_flags = RADEON_PLL_LEGACY; + bool use_bios_divs = false; + /* PLL registers */ + uint32_t pll_ref_div = 0; + uint32_t pll_fb_post_div = 0; + uint32_t htotal_cntl = 0; + + struct radeon_pll *pll; + + struct { + int divider; + int bitvalue; + } *post_div, post_divs[] = { + /* From RAGE 128 VR/RAGE 128 GL Register + * Reference Manual (Technical Reference + * Manual P/N RRG-G04100-C Rev. 0.04), page + * 3-17 (PLL_DIV_[3:0]). + */ + { 1, 0 }, /* VCLK_SRC */ + { 2, 1 }, /* VCLK_SRC/2 */ + { 4, 2 }, /* VCLK_SRC/4 */ + { 8, 3 }, /* VCLK_SRC/8 */ + { 3, 4 }, /* VCLK_SRC/3 */ + { 16, 5 }, /* VCLK_SRC/16 */ + { 6, 6 }, /* VCLK_SRC/6 */ + { 12, 7 }, /* VCLK_SRC/12 */ + { 0, 0 } + }; + + if (radeon_crtc->crtc_id) + pll = &rdev->clock.p2pll; + else + pll = &rdev->clock.p1pll; + + if (mode->clock > 200000) /* range limits??? */ + pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; + else + pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + if (encoder->crtc == crtc) { + if (encoder->encoder_type != DRM_MODE_ENCODER_DAC) + pll_flags |= RADEON_PLL_NO_ODD_POST_DIV; + if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) { + struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); + struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv; + if (lvds) { + if (lvds->use_bios_dividers) { + pll_ref_div = lvds->panel_ref_divider; + pll_fb_post_div = (lvds->panel_fb_divider | + (lvds->panel_post_divider << 16)); + htotal_cntl = 0; + use_bios_divs = true; + } + } + pll_flags |= RADEON_PLL_USE_REF_DIV; + } + } + } + + DRM_DEBUG("\n"); + + if (!use_bios_divs) { + radeon_compute_pll(pll, mode->clock, + &freq, &feedback_div, &frac_fb_div, + &reference_div, &post_divider, + pll_flags); + + for (post_div = &post_divs[0]; post_div->divider; ++post_div) { + if (post_div->divider == post_divider) + break; + } + + if (!post_div->divider) + post_div = &post_divs[0]; + + DRM_DEBUG("dc=%u, fd=%d, rd=%d, pd=%d\n", + (unsigned)freq, + feedback_div, + reference_div, + post_divider); + + pll_ref_div = reference_div; +#if defined(__powerpc__) && (0) /* TODO */ + /* apparently programming this otherwise causes a hang??? */ + if (info->MacModel == RADEON_MAC_IBOOK) + pll_fb_post_div = 0x000600ad; + else +#endif + pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16)); + + htotal_cntl = mode->htotal & 0x7; + + } + + pll_gain = radeon_compute_pll_gain(pll->reference_freq, + pll_ref_div & 0x3ff, + pll_fb_post_div & 0x7ff); + + if (radeon_crtc->crtc_id) { + uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) & + ~(RADEON_PIX2CLK_SRC_SEL_MASK)) | + RADEON_PIX2CLK_SRC_SEL_P2PLLCLK); + + WREG32_PLL_P(RADEON_PIXCLKS_CNTL, + RADEON_PIX2CLK_SRC_SEL_CPUCLK, + ~(RADEON_PIX2CLK_SRC_SEL_MASK)); + + WREG32_PLL_P(RADEON_P2PLL_CNTL, + RADEON_P2PLL_RESET + | RADEON_P2PLL_ATOMIC_UPDATE_EN + | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT), + ~(RADEON_P2PLL_RESET + | RADEON_P2PLL_ATOMIC_UPDATE_EN + | RADEON_P2PLL_PVG_MASK)); + + WREG32_PLL_P(RADEON_P2PLL_REF_DIV, + pll_ref_div, + ~RADEON_P2PLL_REF_DIV_MASK); + + WREG32_PLL_P(RADEON_P2PLL_DIV_0, + pll_fb_post_div, + ~RADEON_P2PLL_FB0_DIV_MASK); + + WREG32_PLL_P(RADEON_P2PLL_DIV_0, + pll_fb_post_div, + ~RADEON_P2PLL_POST0_DIV_MASK); + + radeon_pll2_write_update(dev); + radeon_pll2_wait_for_read_update_complete(dev); + + WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl); + + WREG32_PLL_P(RADEON_P2PLL_CNTL, + 0, + ~(RADEON_P2PLL_RESET + | RADEON_P2PLL_SLEEP + | RADEON_P2PLL_ATOMIC_UPDATE_EN)); + + DRM_DEBUG("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n", + (unsigned)pll_ref_div, + (unsigned)pll_fb_post_div, + (unsigned)htotal_cntl, + RREG32_PLL(RADEON_P2PLL_CNTL)); + DRM_DEBUG("Wrote2: rd=%u, fd=%u, pd=%u\n", + (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK, + (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK, + (unsigned)((pll_fb_post_div & + RADEON_P2PLL_POST0_DIV_MASK) >> 16)); + + mdelay(50); /* Let the clock to lock */ + + WREG32_PLL_P(RADEON_PIXCLKS_CNTL, + RADEON_PIX2CLK_SRC_SEL_P2PLLCLK, + ~(RADEON_PIX2CLK_SRC_SEL_MASK)); + + WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl); + } else { + if (rdev->flags & RADEON_IS_MOBILITY) { + /* A temporal workaround for the occational blanking on certain laptop panels. + This appears to related to the PLL divider registers (fail to lock?). + It occurs even when all dividers are the same with their old settings. + In this case we really don't need to fiddle with PLL registers. + By doing this we can avoid the blanking problem with some panels. + */ + if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) && + (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) & + (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) { + WREG32_P(RADEON_CLOCK_CNTL_INDEX, + RADEON_PLL_DIV_SEL, + ~(RADEON_PLL_DIV_SEL)); + r100_pll_errata_after_index(rdev); + return; + } + } + + WREG32_PLL_P(RADEON_VCLK_ECP_CNTL, + RADEON_VCLK_SRC_SEL_CPUCLK, + ~(RADEON_VCLK_SRC_SEL_MASK)); + WREG32_PLL_P(RADEON_PPLL_CNTL, + RADEON_PPLL_RESET + | RADEON_PPLL_ATOMIC_UPDATE_EN + | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN + | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT), + ~(RADEON_PPLL_RESET + | RADEON_PPLL_ATOMIC_UPDATE_EN + | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN + | RADEON_PPLL_PVG_MASK)); + + WREG32_P(RADEON_CLOCK_CNTL_INDEX, + RADEON_PLL_DIV_SEL, + ~(RADEON_PLL_DIV_SEL)); + r100_pll_errata_after_index(rdev); + + if (ASIC_IS_R300(rdev) || + (rdev->family == CHIP_RS300) || + (rdev->family == CHIP_RS400) || + (rdev->family == CHIP_RS480)) { + if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) { + /* When restoring console mode, use saved PPLL_REF_DIV + * setting. + */ + WREG32_PLL_P(RADEON_PPLL_REF_DIV, + pll_ref_div, + 0); + } else { + /* R300 uses ref_div_acc field as real ref divider */ + WREG32_PLL_P(RADEON_PPLL_REF_DIV, + (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT), + ~R300_PPLL_REF_DIV_ACC_MASK); + } + } else + WREG32_PLL_P(RADEON_PPLL_REF_DIV, + pll_ref_div, + ~RADEON_PPLL_REF_DIV_MASK); + + WREG32_PLL_P(RADEON_PPLL_DIV_3, + pll_fb_post_div, + ~RADEON_PPLL_FB3_DIV_MASK); + + WREG32_PLL_P(RADEON_PPLL_DIV_3, + pll_fb_post_div, + ~RADEON_PPLL_POST3_DIV_MASK); + + radeon_pll_write_update(dev); + radeon_pll_wait_for_read_update_complete(dev); + + WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl); + + WREG32_PLL_P(RADEON_PPLL_CNTL, + 0, + ~(RADEON_PPLL_RESET + | RADEON_PPLL_SLEEP + | RADEON_PPLL_ATOMIC_UPDATE_EN + | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN)); + + DRM_DEBUG("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n", + pll_ref_div, + pll_fb_post_div, + (unsigned)htotal_cntl, + RREG32_PLL(RADEON_PPLL_CNTL)); + DRM_DEBUG("Wrote: rd=%d, fd=%d, pd=%d\n", + pll_ref_div & RADEON_PPLL_REF_DIV_MASK, + pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK, + (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16); + + mdelay(50); /* Let the clock to lock */ + + WREG32_PLL_P(RADEON_VCLK_ECP_CNTL, + RADEON_VCLK_SRC_SEL_PPLLCLK, + ~(RADEON_VCLK_SRC_SEL_MASK)); + + } +} + +static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static int radeon_crtc_mode_set(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, + int x, int y, struct drm_framebuffer *old_fb) +{ + + DRM_DEBUG("\n"); + + /* TODO TV */ + + radeon_crtc_set_base(crtc, x, y, old_fb); + radeon_set_crtc_timing(crtc, adjusted_mode); + radeon_set_pll(crtc, adjusted_mode); + radeon_init_disp_bandwidth(crtc->dev); + + return 0; +} + +static void radeon_crtc_prepare(struct drm_crtc *crtc) +{ + radeon_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); +} + +static void radeon_crtc_commit(struct drm_crtc *crtc) +{ + radeon_crtc_dpms(crtc, DRM_MODE_DPMS_ON); +} + +static const struct drm_crtc_helper_funcs legacy_helper_funcs = { + .dpms = radeon_crtc_dpms, + .mode_fixup = radeon_crtc_mode_fixup, + .mode_set = radeon_crtc_mode_set, + .mode_set_base = radeon_crtc_set_base, + .prepare = radeon_crtc_prepare, + .commit = radeon_crtc_commit, +}; + + +void radeon_legacy_init_crtc(struct drm_device *dev, + struct radeon_crtc *radeon_crtc) +{ + if (radeon_crtc->crtc_id == 1) + radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP; + drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs); +} + +void radeon_init_disp_bw_legacy(struct drm_device *dev, + struct drm_display_mode *mode1, + uint32_t pixel_bytes1, + struct drm_display_mode *mode2, + uint32_t pixel_bytes2) +{ + struct radeon_device *rdev = dev->dev_private; + fixed20_12 trcd_ff, trp_ff, tras_ff, trbs_ff, tcas_ff; + fixed20_12 sclk_ff, mclk_ff, sclk_eff_ff, sclk_delay_ff; + fixed20_12 peak_disp_bw, mem_bw, pix_clk, pix_clk2, temp_ff, crit_point_ff; + uint32_t temp, data, mem_trcd, mem_trp, mem_tras; + fixed20_12 memtcas_ff[8] = { + fixed_init(1), + fixed_init(2), + fixed_init(3), + fixed_init(0), + fixed_init_half(1), + fixed_init_half(2), + fixed_init(0), + }; + fixed20_12 memtcas_rs480_ff[8] = { + fixed_init(0), + fixed_init(1), + fixed_init(2), + fixed_init(3), + fixed_init(0), + fixed_init_half(1), + fixed_init_half(2), + fixed_init_half(3), + }; + fixed20_12 memtcas2_ff[8] = { + fixed_init(0), + fixed_init(1), + fixed_init(2), + fixed_init(3), + fixed_init(4), + fixed_init(5), + fixed_init(6), + fixed_init(7), + }; + fixed20_12 memtrbs[8] = { + fixed_init(1), + fixed_init_half(1), + fixed_init(2), + fixed_init_half(2), + fixed_init(3), + fixed_init_half(3), + fixed_init(4), + fixed_init_half(4) + }; + fixed20_12 memtrbs_r4xx[8] = { + fixed_init(4), + fixed_init(5), + fixed_init(6), + fixed_init(7), + fixed_init(8), + fixed_init(9), + fixed_init(10), + fixed_init(11) + }; + fixed20_12 min_mem_eff; + fixed20_12 mc_latency_sclk, mc_latency_mclk, k1; + fixed20_12 cur_latency_mclk, cur_latency_sclk; + fixed20_12 disp_latency, disp_latency_overhead, disp_drain_rate, + disp_drain_rate2, read_return_rate; + fixed20_12 time_disp1_drop_priority; + int c; + int cur_size = 16; /* in octawords */ + int critical_point = 0, critical_point2; +/* uint32_t read_return_rate, time_disp1_drop_priority; */ + int stop_req, max_stop_req; + + min_mem_eff.full = rfixed_const_8(0); + /* get modes */ + if ((rdev->disp_priority == 2) && ASIC_IS_R300(rdev)) { + uint32_t mc_init_misc_lat_timer = RREG32(R300_MC_INIT_MISC_LAT_TIMER); + mc_init_misc_lat_timer &= ~(R300_MC_DISP1R_INIT_LAT_MASK << R300_MC_DISP1R_INIT_LAT_SHIFT); + mc_init_misc_lat_timer &= ~(R300_MC_DISP0R_INIT_LAT_MASK << R300_MC_DISP0R_INIT_LAT_SHIFT); + /* check crtc enables */ + if (mode2) + mc_init_misc_lat_timer |= (1 << R300_MC_DISP1R_INIT_LAT_SHIFT); + if (mode1) + mc_init_misc_lat_timer |= (1 << R300_MC_DISP0R_INIT_LAT_SHIFT); + WREG32(R300_MC_INIT_MISC_LAT_TIMER, mc_init_misc_lat_timer); + } + + /* + * determine is there is enough bw for current mode + */ + mclk_ff.full = rfixed_const(rdev->clock.default_mclk); + temp_ff.full = rfixed_const(100); + mclk_ff.full = rfixed_div(mclk_ff, temp_ff); + sclk_ff.full = rfixed_const(rdev->clock.default_sclk); + sclk_ff.full = rfixed_div(sclk_ff, temp_ff); + + temp = (rdev->mc.vram_width / 8) * (rdev->mc.vram_is_ddr ? 2 : 1); + temp_ff.full = rfixed_const(temp); + mem_bw.full = rfixed_mul(mclk_ff, temp_ff); + + pix_clk.full = 0; + pix_clk2.full = 0; + peak_disp_bw.full = 0; + if (mode1) { + temp_ff.full = rfixed_const(1000); + pix_clk.full = rfixed_const(mode1->clock); /* convert to fixed point */ + pix_clk.full = rfixed_div(pix_clk, temp_ff); + temp_ff.full = rfixed_const(pixel_bytes1); + peak_disp_bw.full += rfixed_mul(pix_clk, temp_ff); + } + if (mode2) { + temp_ff.full = rfixed_const(1000); + pix_clk2.full = rfixed_const(mode2->clock); /* convert to fixed point */ + pix_clk2.full = rfixed_div(pix_clk2, temp_ff); + temp_ff.full = rfixed_const(pixel_bytes2); + peak_disp_bw.full += rfixed_mul(pix_clk2, temp_ff); + } + + mem_bw.full = rfixed_mul(mem_bw, min_mem_eff); + if (peak_disp_bw.full >= mem_bw.full) { + DRM_ERROR("You may not have enough display bandwidth for current mode\n" + "If you have flickering problem, try to lower resolution, refresh rate, or color depth\n"); + } + + /* Get values from the EXT_MEM_CNTL register...converting its contents. */ + temp = RREG32(RADEON_MEM_TIMING_CNTL); + if ((rdev->family == CHIP_RV100) || (rdev->flags & RADEON_IS_IGP)) { /* RV100, M6, IGPs */ + mem_trcd = ((temp >> 2) & 0x3) + 1; + mem_trp = ((temp & 0x3)) + 1; + mem_tras = ((temp & 0x70) >> 4) + 1; + } else if (rdev->family == CHIP_R300 || + rdev->family == CHIP_R350) { /* r300, r350 */ + mem_trcd = (temp & 0x7) + 1; + mem_trp = ((temp >> 8) & 0x7) + 1; + mem_tras = ((temp >> 11) & 0xf) + 4; + } else if (rdev->family == CHIP_RV350 || + rdev->family <= CHIP_RV380) { + /* rv3x0 */ + mem_trcd = (temp & 0x7) + 3; + mem_trp = ((temp >> 8) & 0x7) + 3; + mem_tras = ((temp >> 11) & 0xf) + 6; + } else if (rdev->family == CHIP_R420 || + rdev->family == CHIP_R423 || + rdev->family == CHIP_RV410) { + /* r4xx */ + mem_trcd = (temp & 0xf) + 3; + if (mem_trcd > 15) + mem_trcd = 15; + mem_trp = ((temp >> 8) & 0xf) + 3; + if (mem_trp > 15) + mem_trp = 15; + mem_tras = ((temp >> 12) & 0x1f) + 6; + if (mem_tras > 31) + mem_tras = 31; + } else { /* RV200, R200 */ + mem_trcd = (temp & 0x7) + 1; + mem_trp = ((temp >> 8) & 0x7) + 1; + mem_tras = ((temp >> 12) & 0xf) + 4; + } + /* convert to FF */ + trcd_ff.full = rfixed_const(mem_trcd); + trp_ff.full = rfixed_const(mem_trp); + tras_ff.full = rfixed_const(mem_tras); + + /* Get values from the MEM_SDRAM_MODE_REG register...converting its */ + temp = RREG32(RADEON_MEM_SDRAM_MODE_REG); + data = (temp & (7 << 20)) >> 20; + if ((rdev->family == CHIP_RV100) || rdev->flags & RADEON_IS_IGP) { + if (rdev->family == CHIP_RS480) /* don't think rs400 */ + tcas_ff = memtcas_rs480_ff[data]; + else + tcas_ff = memtcas_ff[data]; + } else + tcas_ff = memtcas2_ff[data]; + + if (rdev->family == CHIP_RS400 || + rdev->family == CHIP_RS480) { + /* extra cas latency stored in bits 23-25 0-4 clocks */ + data = (temp >> 23) & 0x7; + if (data < 5) + tcas_ff.full += rfixed_const(data); + } + + if (ASIC_IS_R300(rdev) && !(rdev->flags & RADEON_IS_IGP)) { + /* on the R300, Tcas is included in Trbs. + */ + temp = RREG32(RADEON_MEM_CNTL); + data = (R300_MEM_NUM_CHANNELS_MASK & temp); + if (data == 1) { + if (R300_MEM_USE_CD_CH_ONLY & temp) { + temp = RREG32(R300_MC_IND_INDEX); + temp &= ~R300_MC_IND_ADDR_MASK; + temp |= R300_MC_READ_CNTL_CD_mcind; + WREG32(R300_MC_IND_INDEX, temp); + temp = RREG32(R300_MC_IND_DATA); + data = (R300_MEM_RBS_POSITION_C_MASK & temp); + } else { + temp = RREG32(R300_MC_READ_CNTL_AB); + data = (R300_MEM_RBS_POSITION_A_MASK & temp); + } + } else { + temp = RREG32(R300_MC_READ_CNTL_AB); + data = (R300_MEM_RBS_POSITION_A_MASK & temp); + } + if (rdev->family == CHIP_RV410 || + rdev->family == CHIP_R420 || + rdev->family == CHIP_R423) + trbs_ff = memtrbs_r4xx[data]; + else + trbs_ff = memtrbs[data]; + tcas_ff.full += trbs_ff.full; + } + + sclk_eff_ff.full = sclk_ff.full; + + if (rdev->flags & RADEON_IS_AGP) { + fixed20_12 agpmode_ff; + agpmode_ff.full = rfixed_const(radeon_agpmode); + temp_ff.full = rfixed_const_666(16); + sclk_eff_ff.full -= rfixed_mul(agpmode_ff, temp_ff); + } + /* TODO PCIE lanes may affect this - agpmode == 16?? */ + + if (ASIC_IS_R300(rdev)) { + sclk_delay_ff.full = rfixed_const(250); + } else { + if ((rdev->family == CHIP_RV100) || + rdev->flags & RADEON_IS_IGP) { + if (rdev->mc.vram_is_ddr) + sclk_delay_ff.full = rfixed_const(41); + else + sclk_delay_ff.full = rfixed_const(33); + } else { + if (rdev->mc.vram_width == 128) + sclk_delay_ff.full = rfixed_const(57); + else + sclk_delay_ff.full = rfixed_const(41); + } + } + + mc_latency_sclk.full = rfixed_div(sclk_delay_ff, sclk_eff_ff); + + if (rdev->mc.vram_is_ddr) { + if (rdev->mc.vram_width == 32) { + k1.full = rfixed_const(40); + c = 3; + } else { + k1.full = rfixed_const(20); + c = 1; + } + } else { + k1.full = rfixed_const(40); + c = 3; + } + + temp_ff.full = rfixed_const(2); + mc_latency_mclk.full = rfixed_mul(trcd_ff, temp_ff); + temp_ff.full = rfixed_const(c); + mc_latency_mclk.full += rfixed_mul(tcas_ff, temp_ff); + temp_ff.full = rfixed_const(4); + mc_latency_mclk.full += rfixed_mul(tras_ff, temp_ff); + mc_latency_mclk.full += rfixed_mul(trp_ff, temp_ff); + mc_latency_mclk.full += k1.full; + + mc_latency_mclk.full = rfixed_div(mc_latency_mclk, mclk_ff); + mc_latency_mclk.full += rfixed_div(temp_ff, sclk_eff_ff); + + /* + HW cursor time assuming worst case of full size colour cursor. + */ + temp_ff.full = rfixed_const((2 * (cur_size - (rdev->mc.vram_is_ddr + 1)))); + temp_ff.full += trcd_ff.full; + if (temp_ff.full < tras_ff.full) + temp_ff.full = tras_ff.full; + cur_latency_mclk.full = rfixed_div(temp_ff, mclk_ff); + + temp_ff.full = rfixed_const(cur_size); + cur_latency_sclk.full = rfixed_div(temp_ff, sclk_eff_ff); + /* + Find the total latency for the display data. + */ + disp_latency_overhead.full = rfixed_const(80); + disp_latency_overhead.full = rfixed_div(disp_latency_overhead, sclk_ff); + mc_latency_mclk.full += disp_latency_overhead.full + cur_latency_mclk.full; + mc_latency_sclk.full += disp_latency_overhead.full + cur_latency_sclk.full; + + if (mc_latency_mclk.full > mc_latency_sclk.full) + disp_latency.full = mc_latency_mclk.full; + else + disp_latency.full = mc_latency_sclk.full; + + /* setup Max GRPH_STOP_REQ default value */ + if (ASIC_IS_RV100(rdev)) + max_stop_req = 0x5c; + else + max_stop_req = 0x7c; + + if (mode1) { + /* CRTC1 + Set GRPH_BUFFER_CNTL register using h/w defined optimal values. + GRPH_STOP_REQ <= MIN[ 0x7C, (CRTC_H_DISP + 1) * (bit depth) / 0x10 ] + */ + stop_req = mode1->hdisplay * pixel_bytes1 / 16; + + if (stop_req > max_stop_req) + stop_req = max_stop_req; + + /* + Find the drain rate of the display buffer. + */ + temp_ff.full = rfixed_const((16/pixel_bytes1)); + disp_drain_rate.full = rfixed_div(pix_clk, temp_ff); + + /* + Find the critical point of the display buffer. + */ + crit_point_ff.full = rfixed_mul(disp_drain_rate, disp_latency); + crit_point_ff.full += rfixed_const_half(0); + + critical_point = rfixed_trunc(crit_point_ff); + + if (rdev->disp_priority == 2) { + critical_point = 0; + } + + /* + The critical point should never be above max_stop_req-4. Setting + GRPH_CRITICAL_CNTL = 0 will thus force high priority all the time. + */ + if (max_stop_req - critical_point < 4) + critical_point = 0; + + if (critical_point == 0 && mode2 && rdev->family == CHIP_R300) { + /* some R300 cards have problem with this set to 0, when CRTC2 is enabled.*/ + critical_point = 0x10; + } + + temp = RREG32(RADEON_GRPH_BUFFER_CNTL); + temp &= ~(RADEON_GRPH_STOP_REQ_MASK); + temp |= (stop_req << RADEON_GRPH_STOP_REQ_SHIFT); + temp &= ~(RADEON_GRPH_START_REQ_MASK); + if ((rdev->family == CHIP_R350) && + (stop_req > 0x15)) { + stop_req -= 0x10; + } + temp |= (stop_req << RADEON_GRPH_START_REQ_SHIFT); + temp |= RADEON_GRPH_BUFFER_SIZE; + temp &= ~(RADEON_GRPH_CRITICAL_CNTL | + RADEON_GRPH_CRITICAL_AT_SOF | + RADEON_GRPH_STOP_CNTL); + /* + Write the result into the register. + */ + WREG32(RADEON_GRPH_BUFFER_CNTL, ((temp & ~RADEON_GRPH_CRITICAL_POINT_MASK) | + (critical_point << RADEON_GRPH_CRITICAL_POINT_SHIFT))); + +#if 0 + if ((rdev->family == CHIP_RS400) || + (rdev->family == CHIP_RS480)) { + /* attempt to program RS400 disp regs correctly ??? */ + temp = RREG32(RS400_DISP1_REG_CNTL); + temp &= ~(RS400_DISP1_START_REQ_LEVEL_MASK | + RS400_DISP1_STOP_REQ_LEVEL_MASK); + WREG32(RS400_DISP1_REQ_CNTL1, (temp | + (critical_point << RS400_DISP1_START_REQ_LEVEL_SHIFT) | + (critical_point << RS400_DISP1_STOP_REQ_LEVEL_SHIFT))); + temp = RREG32(RS400_DMIF_MEM_CNTL1); + temp &= ~(RS400_DISP1_CRITICAL_POINT_START_MASK | + RS400_DISP1_CRITICAL_POINT_STOP_MASK); + WREG32(RS400_DMIF_MEM_CNTL1, (temp | + (critical_point << RS400_DISP1_CRITICAL_POINT_START_SHIFT) | + (critical_point << RS400_DISP1_CRITICAL_POINT_STOP_SHIFT))); + } +#endif + + DRM_DEBUG("GRPH_BUFFER_CNTL from to %x\n", + /* (unsigned int)info->SavedReg->grph_buffer_cntl, */ + (unsigned int)RREG32(RADEON_GRPH_BUFFER_CNTL)); + } + + if (mode2) { + u32 grph2_cntl; + stop_req = mode2->hdisplay * pixel_bytes2 / 16; + + if (stop_req > max_stop_req) + stop_req = max_stop_req; + + /* + Find the drain rate of the display buffer. + */ + temp_ff.full = rfixed_const((16/pixel_bytes2)); + disp_drain_rate2.full = rfixed_div(pix_clk2, temp_ff); + + grph2_cntl = RREG32(RADEON_GRPH2_BUFFER_CNTL); + grph2_cntl &= ~(RADEON_GRPH_STOP_REQ_MASK); + grph2_cntl |= (stop_req << RADEON_GRPH_STOP_REQ_SHIFT); + grph2_cntl &= ~(RADEON_GRPH_START_REQ_MASK); + if ((rdev->family == CHIP_R350) && + (stop_req > 0x15)) { + stop_req -= 0x10; + } + grph2_cntl |= (stop_req << RADEON_GRPH_START_REQ_SHIFT); + grph2_cntl |= RADEON_GRPH_BUFFER_SIZE; + grph2_cntl &= ~(RADEON_GRPH_CRITICAL_CNTL | + RADEON_GRPH_CRITICAL_AT_SOF | + RADEON_GRPH_STOP_CNTL); + + if ((rdev->family == CHIP_RS100) || + (rdev->family == CHIP_RS200)) + critical_point2 = 0; + else { + temp = (rdev->mc.vram_width * rdev->mc.vram_is_ddr + 1)/128; + temp_ff.full = rfixed_const(temp); + temp_ff.full = rfixed_mul(mclk_ff, temp_ff); + if (sclk_ff.full < temp_ff.full) + temp_ff.full = sclk_ff.full; + + read_return_rate.full = temp_ff.full; + + if (mode1) { + temp_ff.full = read_return_rate.full - disp_drain_rate.full; + time_disp1_drop_priority.full = rfixed_div(crit_point_ff, temp_ff); + } else { + time_disp1_drop_priority.full = 0; + } + crit_point_ff.full = disp_latency.full + time_disp1_drop_priority.full + disp_latency.full; + crit_point_ff.full = rfixed_mul(crit_point_ff, disp_drain_rate2); + crit_point_ff.full += rfixed_const_half(0); + + critical_point2 = rfixed_trunc(crit_point_ff); + + if (rdev->disp_priority == 2) { + critical_point2 = 0; + } + + if (max_stop_req - critical_point2 < 4) + critical_point2 = 0; + + } + + if (critical_point2 == 0 && rdev->family == CHIP_R300) { + /* some R300 cards have problem with this set to 0 */ + critical_point2 = 0x10; + } + + WREG32(RADEON_GRPH2_BUFFER_CNTL, ((grph2_cntl & ~RADEON_GRPH_CRITICAL_POINT_MASK) | + (critical_point2 << RADEON_GRPH_CRITICAL_POINT_SHIFT))); + + if ((rdev->family == CHIP_RS400) || + (rdev->family == CHIP_RS480)) { +#if 0 + /* attempt to program RS400 disp2 regs correctly ??? */ + temp = RREG32(RS400_DISP2_REQ_CNTL1); + temp &= ~(RS400_DISP2_START_REQ_LEVEL_MASK | + RS400_DISP2_STOP_REQ_LEVEL_MASK); + WREG32(RS400_DISP2_REQ_CNTL1, (temp | + (critical_point2 << RS400_DISP1_START_REQ_LEVEL_SHIFT) | + (critical_point2 << RS400_DISP1_STOP_REQ_LEVEL_SHIFT))); + temp = RREG32(RS400_DISP2_REQ_CNTL2); + temp &= ~(RS400_DISP2_CRITICAL_POINT_START_MASK | + RS400_DISP2_CRITICAL_POINT_STOP_MASK); + WREG32(RS400_DISP2_REQ_CNTL2, (temp | + (critical_point2 << RS400_DISP2_CRITICAL_POINT_START_SHIFT) | + (critical_point2 << RS400_DISP2_CRITICAL_POINT_STOP_SHIFT))); +#endif + WREG32(RS400_DISP2_REQ_CNTL1, 0x105DC1CC); + WREG32(RS400_DISP2_REQ_CNTL2, 0x2749D000); + WREG32(RS400_DMIF_MEM_CNTL1, 0x29CA71DC); + WREG32(RS400_DISP1_REQ_CNTL1, 0x28FBC3AC); + } + + DRM_DEBUG("GRPH2_BUFFER_CNTL from to %x\n", + (unsigned int)RREG32(RADEON_GRPH2_BUFFER_CNTL)); + } +} |