diff options
Diffstat (limited to 'drivers/video/fbdev/intelfb/intelfbhw.c')
| -rw-r--r-- | drivers/video/fbdev/intelfb/intelfbhw.c | 2115 |
1 files changed, 0 insertions, 2115 deletions
diff --git a/drivers/video/fbdev/intelfb/intelfbhw.c b/drivers/video/fbdev/intelfb/intelfbhw.c deleted file mode 100644 index 2086e06532..0000000000 --- a/drivers/video/fbdev/intelfb/intelfbhw.c +++ /dev/null @@ -1,2115 +0,0 @@ -/* - * intelfb - * - * Linux framebuffer driver for Intel(R) 865G integrated graphics chips. - * - * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org> - * 2004 Sylvain Meyer - * - * This driver consists of two parts. The first part (intelfbdrv.c) provides - * the basic fbdev interfaces, is derived in part from the radeonfb and - * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c) - * provides the code to program the hardware. Most of it is derived from - * the i810/i830 XFree86 driver. The HW-specific code is covered here - * under a dual license (GPL and MIT/XFree86 license). - * - * Author: David Dawes - * - */ - -/* $DHD: intelfb/intelfbhw.c,v 1.9 2003/06/27 15:06:25 dawes Exp $ */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/vmalloc.h> -#include <linux/pagemap.h> -#include <linux/interrupt.h> - -#include <asm/io.h> - -#include "intelfb.h" -#include "intelfbhw.h" - -struct pll_min_max { - int min_m, max_m, min_m1, max_m1; - int min_m2, max_m2, min_n, max_n; - int min_p, max_p, min_p1, max_p1; - int min_vco, max_vco, p_transition_clk, ref_clk; - int p_inc_lo, p_inc_hi; -}; - -#define PLLS_I8xx 0 -#define PLLS_I9xx 1 -#define PLLS_MAX 2 - -static struct pll_min_max plls[PLLS_MAX] = { - { 108, 140, 18, 26, - 6, 16, 3, 16, - 4, 128, 0, 31, - 930000, 1400000, 165000, 48000, - 4, 2 }, /* I8xx */ - - { 75, 120, 10, 20, - 5, 9, 4, 7, - 5, 80, 1, 8, - 1400000, 2800000, 200000, 96000, - 10, 5 } /* I9xx */ -}; - -int intelfbhw_get_chipset(struct pci_dev *pdev, struct intelfb_info *dinfo) -{ - u32 tmp; - if (!pdev || !dinfo) - return 1; - - switch (pdev->device) { - case PCI_DEVICE_ID_INTEL_830M: - dinfo->name = "Intel(R) 830M"; - dinfo->chipset = INTEL_830M; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I8xx; - return 0; - case PCI_DEVICE_ID_INTEL_845G: - dinfo->name = "Intel(R) 845G"; - dinfo->chipset = INTEL_845G; - dinfo->mobile = 0; - dinfo->pll_index = PLLS_I8xx; - return 0; - case PCI_DEVICE_ID_INTEL_854: - dinfo->mobile = 1; - dinfo->name = "Intel(R) 854"; - dinfo->chipset = INTEL_854; - return 0; - case PCI_DEVICE_ID_INTEL_85XGM: - tmp = 0; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I8xx; - pci_read_config_dword(pdev, INTEL_85X_CAPID, &tmp); - switch ((tmp >> INTEL_85X_VARIANT_SHIFT) & - INTEL_85X_VARIANT_MASK) { - case INTEL_VAR_855GME: - dinfo->name = "Intel(R) 855GME"; - dinfo->chipset = INTEL_855GME; - return 0; - case INTEL_VAR_855GM: - dinfo->name = "Intel(R) 855GM"; - dinfo->chipset = INTEL_855GM; - return 0; - case INTEL_VAR_852GME: - dinfo->name = "Intel(R) 852GME"; - dinfo->chipset = INTEL_852GME; - return 0; - case INTEL_VAR_852GM: - dinfo->name = "Intel(R) 852GM"; - dinfo->chipset = INTEL_852GM; - return 0; - default: - dinfo->name = "Intel(R) 852GM/855GM"; - dinfo->chipset = INTEL_85XGM; - return 0; - } - break; - case PCI_DEVICE_ID_INTEL_865G: - dinfo->name = "Intel(R) 865G"; - dinfo->chipset = INTEL_865G; - dinfo->mobile = 0; - dinfo->pll_index = PLLS_I8xx; - return 0; - case PCI_DEVICE_ID_INTEL_915G: - dinfo->name = "Intel(R) 915G"; - dinfo->chipset = INTEL_915G; - dinfo->mobile = 0; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_915GM: - dinfo->name = "Intel(R) 915GM"; - dinfo->chipset = INTEL_915GM; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_945G: - dinfo->name = "Intel(R) 945G"; - dinfo->chipset = INTEL_945G; - dinfo->mobile = 0; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_945GM: - dinfo->name = "Intel(R) 945GM"; - dinfo->chipset = INTEL_945GM; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_945GME: - dinfo->name = "Intel(R) 945GME"; - dinfo->chipset = INTEL_945GME; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_965G: - dinfo->name = "Intel(R) 965G"; - dinfo->chipset = INTEL_965G; - dinfo->mobile = 0; - dinfo->pll_index = PLLS_I9xx; - return 0; - case PCI_DEVICE_ID_INTEL_965GM: - dinfo->name = "Intel(R) 965GM"; - dinfo->chipset = INTEL_965GM; - dinfo->mobile = 1; - dinfo->pll_index = PLLS_I9xx; - return 0; - default: - return 1; - } -} - -int intelfbhw_get_memory(struct pci_dev *pdev, int *aperture_size, - int *stolen_size) -{ - struct pci_dev *bridge_dev; - u16 tmp; - int stolen_overhead; - - if (!pdev || !aperture_size || !stolen_size) - return 1; - - /* Find the bridge device. It is always 0:0.0 */ - bridge_dev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus), 0, - PCI_DEVFN(0, 0)); - if (!bridge_dev) { - ERR_MSG("cannot find bridge device\n"); - return 1; - } - - /* Get the fb aperture size and "stolen" memory amount. */ - tmp = 0; - pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp); - pci_dev_put(bridge_dev); - - switch (pdev->device) { - case PCI_DEVICE_ID_INTEL_915G: - case PCI_DEVICE_ID_INTEL_915GM: - case PCI_DEVICE_ID_INTEL_945G: - case PCI_DEVICE_ID_INTEL_945GM: - case PCI_DEVICE_ID_INTEL_945GME: - case PCI_DEVICE_ID_INTEL_965G: - case PCI_DEVICE_ID_INTEL_965GM: - /* - * 915, 945 and 965 chipsets support 64MB, 128MB or 256MB - * aperture. Determine size from PCI resource length. - */ - *aperture_size = pci_resource_len(pdev, 2); - break; - default: - if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M) - *aperture_size = MB(64); - else - *aperture_size = MB(128); - break; - } - - /* Stolen memory size is reduced by the GTT and the popup. - GTT is 1K per MB of aperture size, and popup is 4K. */ - stolen_overhead = (*aperture_size / MB(1)) + 4; - switch(pdev->device) { - case PCI_DEVICE_ID_INTEL_830M: - case PCI_DEVICE_ID_INTEL_845G: - switch (tmp & INTEL_830_GMCH_GMS_MASK) { - case INTEL_830_GMCH_GMS_STOLEN_512: - *stolen_size = KB(512) - KB(stolen_overhead); - return 0; - case INTEL_830_GMCH_GMS_STOLEN_1024: - *stolen_size = MB(1) - KB(stolen_overhead); - return 0; - case INTEL_830_GMCH_GMS_STOLEN_8192: - *stolen_size = MB(8) - KB(stolen_overhead); - return 0; - case INTEL_830_GMCH_GMS_LOCAL: - ERR_MSG("only local memory found\n"); - return 1; - case INTEL_830_GMCH_GMS_DISABLED: - ERR_MSG("video memory is disabled\n"); - return 1; - default: - ERR_MSG("unexpected GMCH_GMS value: 0x%02x\n", - tmp & INTEL_830_GMCH_GMS_MASK); - return 1; - } - break; - default: - switch (tmp & INTEL_855_GMCH_GMS_MASK) { - case INTEL_855_GMCH_GMS_STOLEN_1M: - *stolen_size = MB(1) - KB(stolen_overhead); - return 0; - case INTEL_855_GMCH_GMS_STOLEN_4M: - *stolen_size = MB(4) - KB(stolen_overhead); - return 0; - case INTEL_855_GMCH_GMS_STOLEN_8M: - *stolen_size = MB(8) - KB(stolen_overhead); - return 0; - case INTEL_855_GMCH_GMS_STOLEN_16M: - *stolen_size = MB(16) - KB(stolen_overhead); - return 0; - case INTEL_855_GMCH_GMS_STOLEN_32M: - *stolen_size = MB(32) - KB(stolen_overhead); - return 0; - case INTEL_915G_GMCH_GMS_STOLEN_48M: - *stolen_size = MB(48) - KB(stolen_overhead); - return 0; - case INTEL_915G_GMCH_GMS_STOLEN_64M: - *stolen_size = MB(64) - KB(stolen_overhead); - return 0; - case INTEL_855_GMCH_GMS_DISABLED: - ERR_MSG("video memory is disabled\n"); - return 0; - default: - ERR_MSG("unexpected GMCH_GMS value: 0x%02x\n", - tmp & INTEL_855_GMCH_GMS_MASK); - return 1; - } - } -} - -int intelfbhw_check_non_crt(struct intelfb_info *dinfo) -{ - int dvo = 0; - - if (INREG(LVDS) & PORT_ENABLE) - dvo |= LVDS_PORT; - if (INREG(DVOA) & PORT_ENABLE) - dvo |= DVOA_PORT; - if (INREG(DVOB) & PORT_ENABLE) - dvo |= DVOB_PORT; - if (INREG(DVOC) & PORT_ENABLE) - dvo |= DVOC_PORT; - - return dvo; -} - -const char * intelfbhw_dvo_to_string(int dvo) -{ - if (dvo & DVOA_PORT) - return "DVO port A"; - else if (dvo & DVOB_PORT) - return "DVO port B"; - else if (dvo & DVOC_PORT) - return "DVO port C"; - else if (dvo & LVDS_PORT) - return "LVDS port"; - else - return NULL; -} - - -int intelfbhw_validate_mode(struct intelfb_info *dinfo, - struct fb_var_screeninfo *var) -{ - int bytes_per_pixel; - int tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_validate_mode\n"); -#endif - - bytes_per_pixel = var->bits_per_pixel / 8; - if (bytes_per_pixel == 3) - bytes_per_pixel = 4; - - /* Check if enough video memory. */ - tmp = var->yres_virtual * var->xres_virtual * bytes_per_pixel; - if (tmp > dinfo->fb.size) { - WRN_MSG("Not enough video ram for mode " - "(%d KByte vs %d KByte).\n", - BtoKB(tmp), BtoKB(dinfo->fb.size)); - return 1; - } - - /* Check if x/y limits are OK. */ - if (var->xres - 1 > HACTIVE_MASK) { - WRN_MSG("X resolution too large (%d vs %d).\n", - var->xres, HACTIVE_MASK + 1); - return 1; - } - if (var->yres - 1 > VACTIVE_MASK) { - WRN_MSG("Y resolution too large (%d vs %d).\n", - var->yres, VACTIVE_MASK + 1); - return 1; - } - if (var->xres < 4) { - WRN_MSG("X resolution too small (%d vs 4).\n", var->xres); - return 1; - } - if (var->yres < 4) { - WRN_MSG("Y resolution too small (%d vs 4).\n", var->yres); - return 1; - } - - /* Check for doublescan modes. */ - if (var->vmode & FB_VMODE_DOUBLE) { - WRN_MSG("Mode is double-scan.\n"); - return 1; - } - - if ((var->vmode & FB_VMODE_INTERLACED) && (var->yres & 1)) { - WRN_MSG("Odd number of lines in interlaced mode\n"); - return 1; - } - - /* Check if clock is OK. */ - tmp = 1000000000 / var->pixclock; - if (tmp < MIN_CLOCK) { - WRN_MSG("Pixel clock is too low (%d MHz vs %d MHz).\n", - (tmp + 500) / 1000, MIN_CLOCK / 1000); - return 1; - } - if (tmp > MAX_CLOCK) { - WRN_MSG("Pixel clock is too high (%d MHz vs %d MHz).\n", - (tmp + 500) / 1000, MAX_CLOCK / 1000); - return 1; - } - - return 0; -} - -int intelfbhw_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) -{ - struct intelfb_info *dinfo = GET_DINFO(info); - u32 offset, xoffset, yoffset; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_pan_display\n"); -#endif - - xoffset = ROUND_DOWN_TO(var->xoffset, 8); - yoffset = var->yoffset; - - if ((xoffset + info->var.xres > info->var.xres_virtual) || - (yoffset + info->var.yres > info->var.yres_virtual)) - return -EINVAL; - - offset = (yoffset * dinfo->pitch) + - (xoffset * info->var.bits_per_pixel) / 8; - - offset += dinfo->fb.offset << 12; - - dinfo->vsync.pan_offset = offset; - if ((var->activate & FB_ACTIVATE_VBL) && - !intelfbhw_enable_irq(dinfo)) - dinfo->vsync.pan_display = 1; - else { - dinfo->vsync.pan_display = 0; - OUTREG(DSPABASE, offset); - } - - return 0; -} - -/* Blank the screen. */ -void intelfbhw_do_blank(int blank, struct fb_info *info) -{ - struct intelfb_info *dinfo = GET_DINFO(info); - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_do_blank: blank is %d\n", blank); -#endif - - /* Turn plane A on or off */ - tmp = INREG(DSPACNTR); - if (blank) - tmp &= ~DISPPLANE_PLANE_ENABLE; - else - tmp |= DISPPLANE_PLANE_ENABLE; - OUTREG(DSPACNTR, tmp); - /* Flush */ - tmp = INREG(DSPABASE); - OUTREG(DSPABASE, tmp); - - /* Turn off/on the HW cursor */ -#if VERBOSE > 0 - DBG_MSG("cursor_on is %d\n", dinfo->cursor_on); -#endif - if (dinfo->cursor_on) { - if (blank) - intelfbhw_cursor_hide(dinfo); - else - intelfbhw_cursor_show(dinfo); - dinfo->cursor_on = 1; - } - dinfo->cursor_blanked = blank; - - /* Set DPMS level */ - tmp = INREG(ADPA) & ~ADPA_DPMS_CONTROL_MASK; - switch (blank) { - case FB_BLANK_UNBLANK: - case FB_BLANK_NORMAL: - tmp |= ADPA_DPMS_D0; - break; - case FB_BLANK_VSYNC_SUSPEND: - tmp |= ADPA_DPMS_D1; - break; - case FB_BLANK_HSYNC_SUSPEND: - tmp |= ADPA_DPMS_D2; - break; - case FB_BLANK_POWERDOWN: - tmp |= ADPA_DPMS_D3; - break; - } - OUTREG(ADPA, tmp); - - return; -} - - -/* Check which pipe is connected to an active display plane. */ -int intelfbhw_active_pipe(const struct intelfb_hwstate *hw) -{ - int pipe = -1; - - /* keep old default behaviour - prefer PIPE_A */ - if (hw->disp_b_ctrl & DISPPLANE_PLANE_ENABLE) { - pipe = (hw->disp_b_ctrl >> DISPPLANE_SEL_PIPE_SHIFT); - pipe &= PIPE_MASK; - if (unlikely(pipe == PIPE_A)) - return PIPE_A; - } - if (hw->disp_a_ctrl & DISPPLANE_PLANE_ENABLE) { - pipe = (hw->disp_a_ctrl >> DISPPLANE_SEL_PIPE_SHIFT); - pipe &= PIPE_MASK; - if (likely(pipe == PIPE_A)) - return PIPE_A; - } - /* Impossible that no pipe is selected - return PIPE_A */ - WARN_ON(pipe == -1); - if (unlikely(pipe == -1)) - pipe = PIPE_A; - - return pipe; -} - -void intelfbhw_setcolreg(struct intelfb_info *dinfo, unsigned regno, - unsigned red, unsigned green, unsigned blue, - unsigned transp) -{ - u32 palette_reg = (dinfo->pipe == PIPE_A) ? - PALETTE_A : PALETTE_B; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_setcolreg: %d: (%d, %d, %d)\n", - regno, red, green, blue); -#endif - - OUTREG(palette_reg + (regno << 2), - (red << PALETTE_8_RED_SHIFT) | - (green << PALETTE_8_GREEN_SHIFT) | - (blue << PALETTE_8_BLUE_SHIFT)); -} - - -int intelfbhw_read_hw_state(struct intelfb_info *dinfo, - struct intelfb_hwstate *hw, int flag) -{ - int i; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_read_hw_state\n"); -#endif - - if (!hw || !dinfo) - return -1; - - /* Read in as much of the HW state as possible. */ - hw->vga0_divisor = INREG(VGA0_DIVISOR); - hw->vga1_divisor = INREG(VGA1_DIVISOR); - hw->vga_pd = INREG(VGAPD); - hw->dpll_a = INREG(DPLL_A); - hw->dpll_b = INREG(DPLL_B); - hw->fpa0 = INREG(FPA0); - hw->fpa1 = INREG(FPA1); - hw->fpb0 = INREG(FPB0); - hw->fpb1 = INREG(FPB1); - - if (flag == 1) - return flag; - -#if 0 - /* This seems to be a problem with the 852GM/855GM */ - for (i = 0; i < PALETTE_8_ENTRIES; i++) { - hw->palette_a[i] = INREG(PALETTE_A + (i << 2)); - hw->palette_b[i] = INREG(PALETTE_B + (i << 2)); - } -#endif - - if (flag == 2) - return flag; - - hw->htotal_a = INREG(HTOTAL_A); - hw->hblank_a = INREG(HBLANK_A); - hw->hsync_a = INREG(HSYNC_A); - hw->vtotal_a = INREG(VTOTAL_A); - hw->vblank_a = INREG(VBLANK_A); - hw->vsync_a = INREG(VSYNC_A); - hw->src_size_a = INREG(SRC_SIZE_A); - hw->bclrpat_a = INREG(BCLRPAT_A); - hw->htotal_b = INREG(HTOTAL_B); - hw->hblank_b = INREG(HBLANK_B); - hw->hsync_b = INREG(HSYNC_B); - hw->vtotal_b = INREG(VTOTAL_B); - hw->vblank_b = INREG(VBLANK_B); - hw->vsync_b = INREG(VSYNC_B); - hw->src_size_b = INREG(SRC_SIZE_B); - hw->bclrpat_b = INREG(BCLRPAT_B); - - if (flag == 3) - return flag; - - hw->adpa = INREG(ADPA); - hw->dvoa = INREG(DVOA); - hw->dvob = INREG(DVOB); - hw->dvoc = INREG(DVOC); - hw->dvoa_srcdim = INREG(DVOA_SRCDIM); - hw->dvob_srcdim = INREG(DVOB_SRCDIM); - hw->dvoc_srcdim = INREG(DVOC_SRCDIM); - hw->lvds = INREG(LVDS); - - if (flag == 4) - return flag; - - hw->pipe_a_conf = INREG(PIPEACONF); - hw->pipe_b_conf = INREG(PIPEBCONF); - hw->disp_arb = INREG(DISPARB); - - if (flag == 5) - return flag; - - hw->cursor_a_control = INREG(CURSOR_A_CONTROL); - hw->cursor_b_control = INREG(CURSOR_B_CONTROL); - hw->cursor_a_base = INREG(CURSOR_A_BASEADDR); - hw->cursor_b_base = INREG(CURSOR_B_BASEADDR); - - if (flag == 6) - return flag; - - for (i = 0; i < 4; i++) { - hw->cursor_a_palette[i] = INREG(CURSOR_A_PALETTE0 + (i << 2)); - hw->cursor_b_palette[i] = INREG(CURSOR_B_PALETTE0 + (i << 2)); - } - - if (flag == 7) - return flag; - - hw->cursor_size = INREG(CURSOR_SIZE); - - if (flag == 8) - return flag; - - hw->disp_a_ctrl = INREG(DSPACNTR); - hw->disp_b_ctrl = INREG(DSPBCNTR); - hw->disp_a_base = INREG(DSPABASE); - hw->disp_b_base = INREG(DSPBBASE); - hw->disp_a_stride = INREG(DSPASTRIDE); - hw->disp_b_stride = INREG(DSPBSTRIDE); - - if (flag == 9) - return flag; - - hw->vgacntrl = INREG(VGACNTRL); - - if (flag == 10) - return flag; - - hw->add_id = INREG(ADD_ID); - - if (flag == 11) - return flag; - - for (i = 0; i < 7; i++) { - hw->swf0x[i] = INREG(SWF00 + (i << 2)); - hw->swf1x[i] = INREG(SWF10 + (i << 2)); - if (i < 3) - hw->swf3x[i] = INREG(SWF30 + (i << 2)); - } - - for (i = 0; i < 8; i++) - hw->fence[i] = INREG(FENCE + (i << 2)); - - hw->instpm = INREG(INSTPM); - hw->mem_mode = INREG(MEM_MODE); - hw->fw_blc_0 = INREG(FW_BLC_0); - hw->fw_blc_1 = INREG(FW_BLC_1); - - hw->hwstam = INREG16(HWSTAM); - hw->ier = INREG16(IER); - hw->iir = INREG16(IIR); - hw->imr = INREG16(IMR); - - return 0; -} - - -static int calc_vclock3(int index, int m, int n, int p) -{ - if (p == 0 || n == 0) - return 0; - return plls[index].ref_clk * m / n / p; -} - -static int calc_vclock(int index, int m1, int m2, int n, int p1, int p2, - int lvds) -{ - struct pll_min_max *pll = &plls[index]; - u32 m, vco, p; - - m = (5 * (m1 + 2)) + (m2 + 2); - n += 2; - vco = pll->ref_clk * m / n; - - if (index == PLLS_I8xx) - p = ((p1 + 2) * (1 << (p2 + 1))); - else - p = ((p1) * (p2 ? 5 : 10)); - return vco / p; -} - -#if REGDUMP -static void intelfbhw_get_p1p2(struct intelfb_info *dinfo, int dpll, - int *o_p1, int *o_p2) -{ - int p1, p2; - - if (IS_I9XX(dinfo)) { - if (dpll & DPLL_P1_FORCE_DIV2) - p1 = 1; - else - p1 = (dpll >> DPLL_P1_SHIFT) & 0xff; - - p1 = ffs(p1); - - p2 = (dpll >> DPLL_I9XX_P2_SHIFT) & DPLL_P2_MASK; - } else { - if (dpll & DPLL_P1_FORCE_DIV2) - p1 = 0; - else - p1 = (dpll >> DPLL_P1_SHIFT) & DPLL_P1_MASK; - p2 = (dpll >> DPLL_P2_SHIFT) & DPLL_P2_MASK; - } - - *o_p1 = p1; - *o_p2 = p2; -} -#endif - - -void intelfbhw_print_hw_state(struct intelfb_info *dinfo, - struct intelfb_hwstate *hw) -{ -#if REGDUMP - int i, m1, m2, n, p1, p2; - int index = dinfo->pll_index; - DBG_MSG("intelfbhw_print_hw_state\n"); - - if (!hw) - return; - /* Read in as much of the HW state as possible. */ - printk("hw state dump start\n"); - printk(" VGA0_DIVISOR: 0x%08x\n", hw->vga0_divisor); - printk(" VGA1_DIVISOR: 0x%08x\n", hw->vga1_divisor); - printk(" VGAPD: 0x%08x\n", hw->vga_pd); - n = (hw->vga0_divisor >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m1 = (hw->vga0_divisor >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m2 = (hw->vga0_divisor >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - - intelfbhw_get_p1p2(dinfo, hw->vga_pd, &p1, &p2); - - printk(" VGA0: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n", - m1, m2, n, p1, p2); - printk(" VGA0: clock is %d\n", - calc_vclock(index, m1, m2, n, p1, p2, 0)); - - n = (hw->vga1_divisor >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m1 = (hw->vga1_divisor >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m2 = (hw->vga1_divisor >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - - intelfbhw_get_p1p2(dinfo, hw->vga_pd, &p1, &p2); - printk(" VGA1: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n", - m1, m2, n, p1, p2); - printk(" VGA1: clock is %d\n", - calc_vclock(index, m1, m2, n, p1, p2, 0)); - - printk(" DPLL_A: 0x%08x\n", hw->dpll_a); - printk(" DPLL_B: 0x%08x\n", hw->dpll_b); - printk(" FPA0: 0x%08x\n", hw->fpa0); - printk(" FPA1: 0x%08x\n", hw->fpa1); - printk(" FPB0: 0x%08x\n", hw->fpb0); - printk(" FPB1: 0x%08x\n", hw->fpb1); - - n = (hw->fpa0 >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m1 = (hw->fpa0 >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m2 = (hw->fpa0 >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - - intelfbhw_get_p1p2(dinfo, hw->dpll_a, &p1, &p2); - - printk(" PLLA0: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n", - m1, m2, n, p1, p2); - printk(" PLLA0: clock is %d\n", - calc_vclock(index, m1, m2, n, p1, p2, 0)); - - n = (hw->fpa1 >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m1 = (hw->fpa1 >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - m2 = (hw->fpa1 >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK; - - intelfbhw_get_p1p2(dinfo, hw->dpll_a, &p1, &p2); - - printk(" PLLA1: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n", - m1, m2, n, p1, p2); - printk(" PLLA1: clock is %d\n", - calc_vclock(index, m1, m2, n, p1, p2, 0)); - -#if 0 - printk(" PALETTE_A:\n"); - for (i = 0; i < PALETTE_8_ENTRIES) - printk(" %3d: 0x%08x\n", i, hw->palette_a[i]); - printk(" PALETTE_B:\n"); - for (i = 0; i < PALETTE_8_ENTRIES) - printk(" %3d: 0x%08x\n", i, hw->palette_b[i]); -#endif - - printk(" HTOTAL_A: 0x%08x\n", hw->htotal_a); - printk(" HBLANK_A: 0x%08x\n", hw->hblank_a); - printk(" HSYNC_A: 0x%08x\n", hw->hsync_a); - printk(" VTOTAL_A: 0x%08x\n", hw->vtotal_a); - printk(" VBLANK_A: 0x%08x\n", hw->vblank_a); - printk(" VSYNC_A: 0x%08x\n", hw->vsync_a); - printk(" SRC_SIZE_A: 0x%08x\n", hw->src_size_a); - printk(" BCLRPAT_A: 0x%08x\n", hw->bclrpat_a); - printk(" HTOTAL_B: 0x%08x\n", hw->htotal_b); - printk(" HBLANK_B: 0x%08x\n", hw->hblank_b); - printk(" HSYNC_B: 0x%08x\n", hw->hsync_b); - printk(" VTOTAL_B: 0x%08x\n", hw->vtotal_b); - printk(" VBLANK_B: 0x%08x\n", hw->vblank_b); - printk(" VSYNC_B: 0x%08x\n", hw->vsync_b); - printk(" SRC_SIZE_B: 0x%08x\n", hw->src_size_b); - printk(" BCLRPAT_B: 0x%08x\n", hw->bclrpat_b); - - printk(" ADPA: 0x%08x\n", hw->adpa); - printk(" DVOA: 0x%08x\n", hw->dvoa); - printk(" DVOB: 0x%08x\n", hw->dvob); - printk(" DVOC: 0x%08x\n", hw->dvoc); - printk(" DVOA_SRCDIM: 0x%08x\n", hw->dvoa_srcdim); - printk(" DVOB_SRCDIM: 0x%08x\n", hw->dvob_srcdim); - printk(" DVOC_SRCDIM: 0x%08x\n", hw->dvoc_srcdim); - printk(" LVDS: 0x%08x\n", hw->lvds); - - printk(" PIPEACONF: 0x%08x\n", hw->pipe_a_conf); - printk(" PIPEBCONF: 0x%08x\n", hw->pipe_b_conf); - printk(" DISPARB: 0x%08x\n", hw->disp_arb); - - printk(" CURSOR_A_CONTROL: 0x%08x\n", hw->cursor_a_control); - printk(" CURSOR_B_CONTROL: 0x%08x\n", hw->cursor_b_control); - printk(" CURSOR_A_BASEADDR: 0x%08x\n", hw->cursor_a_base); - printk(" CURSOR_B_BASEADDR: 0x%08x\n", hw->cursor_b_base); - - printk(" CURSOR_A_PALETTE: "); - for (i = 0; i < 4; i++) { - printk("0x%08x", hw->cursor_a_palette[i]); - if (i < 3) - printk(", "); - } - printk("\n"); - printk(" CURSOR_B_PALETTE: "); - for (i = 0; i < 4; i++) { - printk("0x%08x", hw->cursor_b_palette[i]); - if (i < 3) - printk(", "); - } - printk("\n"); - - printk(" CURSOR_SIZE: 0x%08x\n", hw->cursor_size); - - printk(" DSPACNTR: 0x%08x\n", hw->disp_a_ctrl); - printk(" DSPBCNTR: 0x%08x\n", hw->disp_b_ctrl); - printk(" DSPABASE: 0x%08x\n", hw->disp_a_base); - printk(" DSPBBASE: 0x%08x\n", hw->disp_b_base); - printk(" DSPASTRIDE: 0x%08x\n", hw->disp_a_stride); - printk(" DSPBSTRIDE: 0x%08x\n", hw->disp_b_stride); - - printk(" VGACNTRL: 0x%08x\n", hw->vgacntrl); - printk(" ADD_ID: 0x%08x\n", hw->add_id); - - for (i = 0; i < 7; i++) { - printk(" SWF0%d 0x%08x\n", i, - hw->swf0x[i]); - } - for (i = 0; i < 7; i++) { - printk(" SWF1%d 0x%08x\n", i, - hw->swf1x[i]); - } - for (i = 0; i < 3; i++) { - printk(" SWF3%d 0x%08x\n", i, - hw->swf3x[i]); - } - for (i = 0; i < 8; i++) - printk(" FENCE%d 0x%08x\n", i, - hw->fence[i]); - - printk(" INSTPM 0x%08x\n", hw->instpm); - printk(" MEM_MODE 0x%08x\n", hw->mem_mode); - printk(" FW_BLC_0 0x%08x\n", hw->fw_blc_0); - printk(" FW_BLC_1 0x%08x\n", hw->fw_blc_1); - - printk(" HWSTAM 0x%04x\n", hw->hwstam); - printk(" IER 0x%04x\n", hw->ier); - printk(" IIR 0x%04x\n", hw->iir); - printk(" IMR 0x%04x\n", hw->imr); - printk("hw state dump end\n"); -#endif -} - - - -/* Split the M parameter into M1 and M2. */ -static int splitm(int index, unsigned int m, unsigned int *retm1, - unsigned int *retm2) -{ - int m1, m2; - int testm; - struct pll_min_max *pll = &plls[index]; - - /* no point optimising too much - brute force m */ - for (m1 = pll->min_m1; m1 < pll->max_m1 + 1; m1++) { - for (m2 = pll->min_m2; m2 < pll->max_m2 + 1; m2++) { - testm = (5 * (m1 + 2)) + (m2 + 2); - if (testm == m) { - *retm1 = (unsigned int)m1; - *retm2 = (unsigned int)m2; - return 0; - } - } - } - return 1; -} - -/* Split the P parameter into P1 and P2. */ -static int splitp(int index, unsigned int p, unsigned int *retp1, - unsigned int *retp2) -{ - int p1, p2; - struct pll_min_max *pll = &plls[index]; - - if (index == PLLS_I9xx) { - p2 = (p % 10) ? 1 : 0; - - p1 = p / (p2 ? 5 : 10); - - *retp1 = (unsigned int)p1; - *retp2 = (unsigned int)p2; - return 0; - } - - if (p % 4 == 0) - p2 = 1; - else - p2 = 0; - p1 = (p / (1 << (p2 + 1))) - 2; - if (p % 4 == 0 && p1 < pll->min_p1) { - p2 = 0; - p1 = (p / (1 << (p2 + 1))) - 2; - } - if (p1 < pll->min_p1 || p1 > pll->max_p1 || - (p1 + 2) * (1 << (p2 + 1)) != p) { - return 1; - } else { - *retp1 = (unsigned int)p1; - *retp2 = (unsigned int)p2; - return 0; - } -} - -static int calc_pll_params(int index, int clock, u32 *retm1, u32 *retm2, - u32 *retn, u32 *retp1, u32 *retp2, u32 *retclock) -{ - u32 m1, m2, n, p1, p2, n1, testm; - u32 f_vco, p, p_best = 0, m, f_out = 0; - u32 err_best = 10000000; - u32 n_best = 0, m_best = 0, f_err; - u32 p_min, p_max, p_inc, div_max; - struct pll_min_max *pll = &plls[index]; - - DBG_MSG("Clock is %d\n", clock); - - div_max = pll->max_vco / clock; - - p_inc = (clock <= pll->p_transition_clk) ? pll->p_inc_lo : pll->p_inc_hi; - p_min = p_inc; - p_max = ROUND_DOWN_TO(div_max, p_inc); - if (p_min < pll->min_p) - p_min = pll->min_p; - if (p_max > pll->max_p) - p_max = pll->max_p; - - DBG_MSG("p range is %d-%d (%d)\n", p_min, p_max, p_inc); - - p = p_min; - do { - if (splitp(index, p, &p1, &p2)) { - WRN_MSG("cannot split p = %d\n", p); - p += p_inc; - continue; - } - n = pll->min_n; - f_vco = clock * p; - - do { - m = ROUND_UP_TO(f_vco * n, pll->ref_clk) / pll->ref_clk; - if (m < pll->min_m) - m = pll->min_m + 1; - if (m > pll->max_m) - m = pll->max_m - 1; - for (testm = m - 1; testm <= m; testm++) { - f_out = calc_vclock3(index, testm, n, p); - if (splitm(index, testm, &m1, &m2)) { - WRN_MSG("cannot split m = %d\n", - testm); - continue; - } - if (clock > f_out) - f_err = clock - f_out; - else/* slightly bias the error for bigger clocks */ - f_err = f_out - clock + 1; - - if (f_err < err_best) { - m_best = testm; - n_best = n; - p_best = p; - err_best = f_err; - } - } - n++; - } while ((n <= pll->max_n) && (f_out >= clock)); - p += p_inc; - } while ((p <= p_max)); - - if (!m_best) { - WRN_MSG("cannot find parameters for clock %d\n", clock); - return 1; - } - m = m_best; - n = n_best; - p = p_best; - splitm(index, m, &m1, &m2); - splitp(index, p, &p1, &p2); - n1 = n - 2; - - DBG_MSG("m, n, p: %d (%d,%d), %d (%d), %d (%d,%d), " - "f: %d (%d), VCO: %d\n", - m, m1, m2, n, n1, p, p1, p2, - calc_vclock3(index, m, n, p), - calc_vclock(index, m1, m2, n1, p1, p2, 0), - calc_vclock3(index, m, n, p) * p); - *retm1 = m1; - *retm2 = m2; - *retn = n1; - *retp1 = p1; - *retp2 = p2; - *retclock = calc_vclock(index, m1, m2, n1, p1, p2, 0); - - return 0; -} - -static __inline__ int check_overflow(u32 value, u32 limit, - const char *description) -{ - if (value > limit) { - WRN_MSG("%s value %d exceeds limit %d\n", - description, value, limit); - return 1; - } - return 0; -} - -/* It is assumed that hw is filled in with the initial state information. */ -int intelfbhw_mode_to_hw(struct intelfb_info *dinfo, - struct intelfb_hwstate *hw, - struct fb_var_screeninfo *var) -{ - int pipe = intelfbhw_active_pipe(hw); - u32 *dpll, *fp0, *fp1; - u32 m1, m2, n, p1, p2, clock_target, clock; - u32 hsync_start, hsync_end, hblank_start, hblank_end, htotal, hactive; - u32 vsync_start, vsync_end, vblank_start, vblank_end, vtotal, vactive; - u32 vsync_pol, hsync_pol; - u32 *vs, *vb, *vt, *hs, *hb, *ht, *ss, *pipe_conf; - u32 stride_alignment; - - DBG_MSG("intelfbhw_mode_to_hw\n"); - - /* Disable VGA */ - hw->vgacntrl |= VGA_DISABLE; - - /* Set which pipe's registers will be set. */ - if (pipe == PIPE_B) { - dpll = &hw->dpll_b; - fp0 = &hw->fpb0; - fp1 = &hw->fpb1; - hs = &hw->hsync_b; - hb = &hw->hblank_b; - ht = &hw->htotal_b; - vs = &hw->vsync_b; - vb = &hw->vblank_b; - vt = &hw->vtotal_b; - ss = &hw->src_size_b; - pipe_conf = &hw->pipe_b_conf; - } else { - dpll = &hw->dpll_a; - fp0 = &hw->fpa0; - fp1 = &hw->fpa1; - hs = &hw->hsync_a; - hb = &hw->hblank_a; - ht = &hw->htotal_a; - vs = &hw->vsync_a; - vb = &hw->vblank_a; - vt = &hw->vtotal_a; - ss = &hw->src_size_a; - pipe_conf = &hw->pipe_a_conf; - } - - /* Use ADPA register for sync control. */ - hw->adpa &= ~ADPA_USE_VGA_HVPOLARITY; - - /* sync polarity */ - hsync_pol = (var->sync & FB_SYNC_HOR_HIGH_ACT) ? - ADPA_SYNC_ACTIVE_HIGH : ADPA_SYNC_ACTIVE_LOW; - vsync_pol = (var->sync & FB_SYNC_VERT_HIGH_ACT) ? - ADPA_SYNC_ACTIVE_HIGH : ADPA_SYNC_ACTIVE_LOW; - hw->adpa &= ~((ADPA_SYNC_ACTIVE_MASK << ADPA_VSYNC_ACTIVE_SHIFT) | - (ADPA_SYNC_ACTIVE_MASK << ADPA_HSYNC_ACTIVE_SHIFT)); - hw->adpa |= (hsync_pol << ADPA_HSYNC_ACTIVE_SHIFT) | - (vsync_pol << ADPA_VSYNC_ACTIVE_SHIFT); - - /* Connect correct pipe to the analog port DAC */ - hw->adpa &= ~(PIPE_MASK << ADPA_PIPE_SELECT_SHIFT); - hw->adpa |= (pipe << ADPA_PIPE_SELECT_SHIFT); - - /* Set DPMS state to D0 (on) */ - hw->adpa &= ~ADPA_DPMS_CONTROL_MASK; - hw->adpa |= ADPA_DPMS_D0; - - hw->adpa |= ADPA_DAC_ENABLE; - - *dpll |= (DPLL_VCO_ENABLE | DPLL_VGA_MODE_DISABLE); - *dpll &= ~(DPLL_RATE_SELECT_MASK | DPLL_REFERENCE_SELECT_MASK); - *dpll |= (DPLL_REFERENCE_DEFAULT | DPLL_RATE_SELECT_FP0); - - /* Desired clock in kHz */ - clock_target = 1000000000 / var->pixclock; - - if (calc_pll_params(dinfo->pll_index, clock_target, &m1, &m2, - &n, &p1, &p2, &clock)) { - WRN_MSG("calc_pll_params failed\n"); - return 1; - } - - /* Check for overflow. */ - if (check_overflow(p1, DPLL_P1_MASK, "PLL P1 parameter")) - return 1; - if (check_overflow(p2, DPLL_P2_MASK, "PLL P2 parameter")) - return 1; - if (check_overflow(m1, FP_DIVISOR_MASK, "PLL M1 parameter")) - return 1; - if (check_overflow(m2, FP_DIVISOR_MASK, "PLL M2 parameter")) - return 1; - if (check_overflow(n, FP_DIVISOR_MASK, "PLL N parameter")) - return 1; - - *dpll &= ~DPLL_P1_FORCE_DIV2; - *dpll &= ~((DPLL_P2_MASK << DPLL_P2_SHIFT) | - (DPLL_P1_MASK << DPLL_P1_SHIFT)); - - if (IS_I9XX(dinfo)) { - *dpll |= (p2 << DPLL_I9XX_P2_SHIFT); - *dpll |= (1 << (p1 - 1)) << DPLL_P1_SHIFT; - } else - *dpll |= (p2 << DPLL_P2_SHIFT) | (p1 << DPLL_P1_SHIFT); - - *fp0 = (n << FP_N_DIVISOR_SHIFT) | - (m1 << FP_M1_DIVISOR_SHIFT) | - (m2 << FP_M2_DIVISOR_SHIFT); - *fp1 = *fp0; - - hw->dvob &= ~PORT_ENABLE; - hw->dvoc &= ~PORT_ENABLE; - - /* Use display plane A. */ - hw->disp_a_ctrl |= DISPPLANE_PLANE_ENABLE; - hw->disp_a_ctrl &= ~DISPPLANE_GAMMA_ENABLE; - hw->disp_a_ctrl &= ~DISPPLANE_PIXFORMAT_MASK; - switch (intelfb_var_to_depth(var)) { - case 8: - hw->disp_a_ctrl |= DISPPLANE_8BPP | DISPPLANE_GAMMA_ENABLE; - break; - case 15: - hw->disp_a_ctrl |= DISPPLANE_15_16BPP; - break; - case 16: - hw->disp_a_ctrl |= DISPPLANE_16BPP; - break; - case 24: - hw->disp_a_ctrl |= DISPPLANE_32BPP_NO_ALPHA; - break; - } - hw->disp_a_ctrl &= ~(PIPE_MASK << DISPPLANE_SEL_PIPE_SHIFT); - hw->disp_a_ctrl |= (pipe << DISPPLANE_SEL_PIPE_SHIFT); - - /* Set CRTC registers. */ - hactive = var->xres; - hsync_start = hactive + var->right_margin; - hsync_end = hsync_start + var->hsync_len; - htotal = hsync_end + var->left_margin; - hblank_start = hactive; - hblank_end = htotal; - - DBG_MSG("H: act %d, ss %d, se %d, tot %d bs %d, be %d\n", - hactive, hsync_start, hsync_end, htotal, hblank_start, - hblank_end); - - vactive = var->yres; - if (var->vmode & FB_VMODE_INTERLACED) - vactive--; /* the chip adds 2 halflines automatically */ - vsync_start = vactive + var->lower_margin; - vsync_end = vsync_start + var->vsync_len; - vtotal = vsync_end + var->upper_margin; - vblank_start = vactive; - vblank_end = vsync_end + 1; - - DBG_MSG("V: act %d, ss %d, se %d, tot %d bs %d, be %d\n", - vactive, vsync_start, vsync_end, vtotal, vblank_start, - vblank_end); - - /* Adjust for register values, and check for overflow. */ - hactive--; - if (check_overflow(hactive, HACTIVE_MASK, "CRTC hactive")) - return 1; - hsync_start--; - if (check_overflow(hsync_start, HSYNCSTART_MASK, "CRTC hsync_start")) - return 1; - hsync_end--; - if (check_overflow(hsync_end, HSYNCEND_MASK, "CRTC hsync_end")) - return 1; - htotal--; - if (check_overflow(htotal, HTOTAL_MASK, "CRTC htotal")) - return 1; - hblank_start--; - if (check_overflow(hblank_start, HBLANKSTART_MASK, "CRTC hblank_start")) - return 1; - hblank_end--; - if (check_overflow(hblank_end, HBLANKEND_MASK, "CRTC hblank_end")) - return 1; - - vactive--; - if (check_overflow(vactive, VACTIVE_MASK, "CRTC vactive")) - return 1; - vsync_start--; - if (check_overflow(vsync_start, VSYNCSTART_MASK, "CRTC vsync_start")) - return 1; - vsync_end--; - if (check_overflow(vsync_end, VSYNCEND_MASK, "CRTC vsync_end")) - return 1; - vtotal--; - if (check_overflow(vtotal, VTOTAL_MASK, "CRTC vtotal")) - return 1; - vblank_start--; - if (check_overflow(vblank_start, VBLANKSTART_MASK, "CRTC vblank_start")) - return 1; - vblank_end--; - if (check_overflow(vblank_end, VBLANKEND_MASK, "CRTC vblank_end")) - return 1; - - *ht = (htotal << HTOTAL_SHIFT) | (hactive << HACTIVE_SHIFT); - *hb = (hblank_start << HBLANKSTART_SHIFT) | - (hblank_end << HSYNCEND_SHIFT); - *hs = (hsync_start << HSYNCSTART_SHIFT) | (hsync_end << HSYNCEND_SHIFT); - - *vt = (vtotal << VTOTAL_SHIFT) | (vactive << VACTIVE_SHIFT); - *vb = (vblank_start << VBLANKSTART_SHIFT) | - (vblank_end << VSYNCEND_SHIFT); - *vs = (vsync_start << VSYNCSTART_SHIFT) | (vsync_end << VSYNCEND_SHIFT); - *ss = (hactive << SRC_SIZE_HORIZ_SHIFT) | - (vactive << SRC_SIZE_VERT_SHIFT); - - hw->disp_a_stride = dinfo->pitch; - DBG_MSG("pitch is %d\n", hw->disp_a_stride); - - hw->disp_a_base = hw->disp_a_stride * var->yoffset + - var->xoffset * var->bits_per_pixel / 8; - - hw->disp_a_base += dinfo->fb.offset << 12; - - /* Check stride alignment. */ - stride_alignment = IS_I9XX(dinfo) ? STRIDE_ALIGNMENT_I9XX : - STRIDE_ALIGNMENT; - if (hw->disp_a_stride % stride_alignment != 0) { - WRN_MSG("display stride %d has bad alignment %d\n", - hw->disp_a_stride, stride_alignment); - return 1; - } - - /* Set the palette to 8-bit mode. */ - *pipe_conf &= ~PIPECONF_GAMMA; - - if (var->vmode & FB_VMODE_INTERLACED) - *pipe_conf |= PIPECONF_INTERLACE_W_FIELD_INDICATION; - else - *pipe_conf &= ~PIPECONF_INTERLACE_MASK; - - return 0; -} - -/* Program a (non-VGA) video mode. */ -int intelfbhw_program_mode(struct intelfb_info *dinfo, - const struct intelfb_hwstate *hw, int blank) -{ - u32 tmp; - const u32 *dpll, *fp0, *fp1, *pipe_conf; - const u32 *hs, *ht, *hb, *vs, *vt, *vb, *ss; - u32 dpll_reg, fp0_reg, fp1_reg, pipe_conf_reg, pipe_stat_reg; - u32 hsync_reg, htotal_reg, hblank_reg; - u32 vsync_reg, vtotal_reg, vblank_reg; - u32 src_size_reg; - u32 count, tmp_val[3]; - - /* Assume single pipe */ - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_program_mode\n"); -#endif - - /* Disable VGA */ - tmp = INREG(VGACNTRL); - tmp |= VGA_DISABLE; - OUTREG(VGACNTRL, tmp); - - dinfo->pipe = intelfbhw_active_pipe(hw); - - if (dinfo->pipe == PIPE_B) { - dpll = &hw->dpll_b; - fp0 = &hw->fpb0; - fp1 = &hw->fpb1; - pipe_conf = &hw->pipe_b_conf; - hs = &hw->hsync_b; - hb = &hw->hblank_b; - ht = &hw->htotal_b; - vs = &hw->vsync_b; - vb = &hw->vblank_b; - vt = &hw->vtotal_b; - ss = &hw->src_size_b; - dpll_reg = DPLL_B; - fp0_reg = FPB0; - fp1_reg = FPB1; - pipe_conf_reg = PIPEBCONF; - pipe_stat_reg = PIPEBSTAT; - hsync_reg = HSYNC_B; - htotal_reg = HTOTAL_B; - hblank_reg = HBLANK_B; - vsync_reg = VSYNC_B; - vtotal_reg = VTOTAL_B; - vblank_reg = VBLANK_B; - src_size_reg = SRC_SIZE_B; - } else { - dpll = &hw->dpll_a; - fp0 = &hw->fpa0; - fp1 = &hw->fpa1; - pipe_conf = &hw->pipe_a_conf; - hs = &hw->hsync_a; - hb = &hw->hblank_a; - ht = &hw->htotal_a; - vs = &hw->vsync_a; - vb = &hw->vblank_a; - vt = &hw->vtotal_a; - ss = &hw->src_size_a; - dpll_reg = DPLL_A; - fp0_reg = FPA0; - fp1_reg = FPA1; - pipe_conf_reg = PIPEACONF; - pipe_stat_reg = PIPEASTAT; - hsync_reg = HSYNC_A; - htotal_reg = HTOTAL_A; - hblank_reg = HBLANK_A; - vsync_reg = VSYNC_A; - vtotal_reg = VTOTAL_A; - vblank_reg = VBLANK_A; - src_size_reg = SRC_SIZE_A; - } - - /* turn off pipe */ - tmp = INREG(pipe_conf_reg); - tmp &= ~PIPECONF_ENABLE; - OUTREG(pipe_conf_reg, tmp); - - count = 0; - do { - tmp_val[count % 3] = INREG(PIPEA_DSL); - if ((tmp_val[0] == tmp_val[1]) && (tmp_val[1] == tmp_val[2])) - break; - count++; - udelay(1); - if (count % 200 == 0) { - tmp = INREG(pipe_conf_reg); - tmp &= ~PIPECONF_ENABLE; - OUTREG(pipe_conf_reg, tmp); - } - } while (count < 2000); - - OUTREG(ADPA, INREG(ADPA) & ~ADPA_DAC_ENABLE); - - /* Disable planes A and B. */ - tmp = INREG(DSPACNTR); - tmp &= ~DISPPLANE_PLANE_ENABLE; - OUTREG(DSPACNTR, tmp); - tmp = INREG(DSPBCNTR); - tmp &= ~DISPPLANE_PLANE_ENABLE; - OUTREG(DSPBCNTR, tmp); - - /* Wait for vblank. For now, just wait for a 50Hz cycle (20ms)) */ - mdelay(20); - - OUTREG(DVOB, INREG(DVOB) & ~PORT_ENABLE); - OUTREG(DVOC, INREG(DVOC) & ~PORT_ENABLE); - OUTREG(ADPA, INREG(ADPA) & ~ADPA_DAC_ENABLE); - - /* Disable Sync */ - tmp = INREG(ADPA); - tmp &= ~ADPA_DPMS_CONTROL_MASK; - tmp |= ADPA_DPMS_D3; - OUTREG(ADPA, tmp); - - /* do some funky magic - xyzzy */ - OUTREG(0x61204, 0xabcd0000); - - /* turn off PLL */ - tmp = INREG(dpll_reg); - tmp &= ~DPLL_VCO_ENABLE; - OUTREG(dpll_reg, tmp); - - /* Set PLL parameters */ - OUTREG(fp0_reg, *fp0); - OUTREG(fp1_reg, *fp1); - - /* Enable PLL */ - OUTREG(dpll_reg, *dpll); - - /* Set DVOs B/C */ - OUTREG(DVOB, hw->dvob); - OUTREG(DVOC, hw->dvoc); - - /* undo funky magic */ - OUTREG(0x61204, 0x00000000); - - /* Set ADPA */ - OUTREG(ADPA, INREG(ADPA) | ADPA_DAC_ENABLE); - OUTREG(ADPA, (hw->adpa & ~(ADPA_DPMS_CONTROL_MASK)) | ADPA_DPMS_D3); - - /* Set pipe parameters */ - OUTREG(hsync_reg, *hs); - OUTREG(hblank_reg, *hb); - OUTREG(htotal_reg, *ht); - OUTREG(vsync_reg, *vs); - OUTREG(vblank_reg, *vb); - OUTREG(vtotal_reg, *vt); - OUTREG(src_size_reg, *ss); - - switch (dinfo->info->var.vmode & (FB_VMODE_INTERLACED | - FB_VMODE_ODD_FLD_FIRST)) { - case FB_VMODE_INTERLACED | FB_VMODE_ODD_FLD_FIRST: - OUTREG(pipe_stat_reg, 0xFFFF | PIPESTAT_FLD_EVT_ODD_EN); - break; - case FB_VMODE_INTERLACED: /* even lines first */ - OUTREG(pipe_stat_reg, 0xFFFF | PIPESTAT_FLD_EVT_EVEN_EN); - break; - default: /* non-interlaced */ - OUTREG(pipe_stat_reg, 0xFFFF); /* clear all status bits only */ - } - /* Enable pipe */ - OUTREG(pipe_conf_reg, *pipe_conf | PIPECONF_ENABLE); - - /* Enable sync */ - tmp = INREG(ADPA); - tmp &= ~ADPA_DPMS_CONTROL_MASK; - tmp |= ADPA_DPMS_D0; - OUTREG(ADPA, tmp); - - /* setup display plane */ - if (dinfo->pdev->device == PCI_DEVICE_ID_INTEL_830M) { - /* - * i830M errata: the display plane must be enabled - * to allow writes to the other bits in the plane - * control register. - */ - tmp = INREG(DSPACNTR); - if ((tmp & DISPPLANE_PLANE_ENABLE) != DISPPLANE_PLANE_ENABLE) { - tmp |= DISPPLANE_PLANE_ENABLE; - OUTREG(DSPACNTR, tmp); - OUTREG(DSPACNTR, - hw->disp_a_ctrl|DISPPLANE_PLANE_ENABLE); - mdelay(1); - } - } - - OUTREG(DSPACNTR, hw->disp_a_ctrl & ~DISPPLANE_PLANE_ENABLE); - OUTREG(DSPASTRIDE, hw->disp_a_stride); - OUTREG(DSPABASE, hw->disp_a_base); - - /* Enable plane */ - if (!blank) { - tmp = INREG(DSPACNTR); - tmp |= DISPPLANE_PLANE_ENABLE; - OUTREG(DSPACNTR, tmp); - OUTREG(DSPABASE, hw->disp_a_base); - } - - return 0; -} - -/* forward declarations */ -static void refresh_ring(struct intelfb_info *dinfo); -static void reset_state(struct intelfb_info *dinfo); -static void do_flush(struct intelfb_info *dinfo); - -static u32 get_ring_space(struct intelfb_info *dinfo) -{ - u32 ring_space; - - if (dinfo->ring_tail >= dinfo->ring_head) - ring_space = dinfo->ring.size - - (dinfo->ring_tail - dinfo->ring_head); - else - ring_space = dinfo->ring_head - dinfo->ring_tail; - - if (ring_space > RING_MIN_FREE) - ring_space -= RING_MIN_FREE; - else - ring_space = 0; - - return ring_space; -} - -static int wait_ring(struct intelfb_info *dinfo, int n) -{ - int i = 0; - unsigned long end; - u32 last_head = INREG(PRI_RING_HEAD) & RING_HEAD_MASK; - -#if VERBOSE > 0 - DBG_MSG("wait_ring: %d\n", n); -#endif - - end = jiffies + (HZ * 3); - while (dinfo->ring_space < n) { - dinfo->ring_head = INREG(PRI_RING_HEAD) & RING_HEAD_MASK; - dinfo->ring_space = get_ring_space(dinfo); - - if (dinfo->ring_head != last_head) { - end = jiffies + (HZ * 3); - last_head = dinfo->ring_head; - } - i++; - if (time_before(end, jiffies)) { - if (!i) { - /* Try again */ - reset_state(dinfo); - refresh_ring(dinfo); - do_flush(dinfo); - end = jiffies + (HZ * 3); - i = 1; - } else { - WRN_MSG("ring buffer : space: %d wanted %d\n", - dinfo->ring_space, n); - WRN_MSG("lockup - turning off hardware " - "acceleration\n"); - dinfo->ring_lockup = 1; - break; - } - } - udelay(1); - } - return i; -} - -static void do_flush(struct intelfb_info *dinfo) -{ - START_RING(2); - OUT_RING(MI_FLUSH | MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE); - OUT_RING(MI_NOOP); - ADVANCE_RING(); -} - -void intelfbhw_do_sync(struct intelfb_info *dinfo) -{ -#if VERBOSE > 0 - DBG_MSG("intelfbhw_do_sync\n"); -#endif - - if (!dinfo->accel) - return; - - /* - * Send a flush, then wait until the ring is empty. This is what - * the XFree86 driver does, and actually it doesn't seem a lot worse - * than the recommended method (both have problems). - */ - do_flush(dinfo); - wait_ring(dinfo, dinfo->ring.size - RING_MIN_FREE); - dinfo->ring_space = dinfo->ring.size - RING_MIN_FREE; -} - -static void refresh_ring(struct intelfb_info *dinfo) -{ -#if VERBOSE > 0 - DBG_MSG("refresh_ring\n"); -#endif - - dinfo->ring_head = INREG(PRI_RING_HEAD) & RING_HEAD_MASK; - dinfo->ring_tail = INREG(PRI_RING_TAIL) & RING_TAIL_MASK; - dinfo->ring_space = get_ring_space(dinfo); -} - -static void reset_state(struct intelfb_info *dinfo) -{ - int i; - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("reset_state\n"); -#endif - - for (i = 0; i < FENCE_NUM; i++) - OUTREG(FENCE + (i << 2), 0); - - /* Flush the ring buffer if it's enabled. */ - tmp = INREG(PRI_RING_LENGTH); - if (tmp & RING_ENABLE) { -#if VERBOSE > 0 - DBG_MSG("reset_state: ring was enabled\n"); -#endif - refresh_ring(dinfo); - intelfbhw_do_sync(dinfo); - DO_RING_IDLE(); - } - - OUTREG(PRI_RING_LENGTH, 0); - OUTREG(PRI_RING_HEAD, 0); - OUTREG(PRI_RING_TAIL, 0); - OUTREG(PRI_RING_START, 0); -} - -/* Stop the 2D engine, and turn off the ring buffer. */ -void intelfbhw_2d_stop(struct intelfb_info *dinfo) -{ -#if VERBOSE > 0 - DBG_MSG("intelfbhw_2d_stop: accel: %d, ring_active: %d\n", - dinfo->accel, dinfo->ring_active); -#endif - - if (!dinfo->accel) - return; - - dinfo->ring_active = 0; - reset_state(dinfo); -} - -/* - * Enable the ring buffer, and initialise the 2D engine. - * It is assumed that the graphics engine has been stopped by previously - * calling intelfb_2d_stop(). - */ -void intelfbhw_2d_start(struct intelfb_info *dinfo) -{ -#if VERBOSE > 0 - DBG_MSG("intelfbhw_2d_start: accel: %d, ring_active: %d\n", - dinfo->accel, dinfo->ring_active); -#endif - - if (!dinfo->accel) - return; - - /* Initialise the primary ring buffer. */ - OUTREG(PRI_RING_LENGTH, 0); - OUTREG(PRI_RING_TAIL, 0); - OUTREG(PRI_RING_HEAD, 0); - - OUTREG(PRI_RING_START, dinfo->ring.physical & RING_START_MASK); - OUTREG(PRI_RING_LENGTH, - ((dinfo->ring.size - GTT_PAGE_SIZE) & RING_LENGTH_MASK) | - RING_NO_REPORT | RING_ENABLE); - refresh_ring(dinfo); - dinfo->ring_active = 1; -} - -/* 2D fillrect (solid fill or invert) */ -void intelfbhw_do_fillrect(struct intelfb_info *dinfo, u32 x, u32 y, u32 w, - u32 h, u32 color, u32 pitch, u32 bpp, u32 rop) -{ - u32 br00, br09, br13, br14, br16; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_do_fillrect: (%d,%d) %dx%d, c 0x%06x, p %d bpp %d, " - "rop 0x%02x\n", x, y, w, h, color, pitch, bpp, rop); -#endif - - br00 = COLOR_BLT_CMD; - br09 = dinfo->fb_start + (y * pitch + x * (bpp / 8)); - br13 = (rop << ROP_SHIFT) | pitch; - br14 = (h << HEIGHT_SHIFT) | ((w * (bpp / 8)) << WIDTH_SHIFT); - br16 = color; - - switch (bpp) { - case 8: - br13 |= COLOR_DEPTH_8; - break; - case 16: - br13 |= COLOR_DEPTH_16; - break; - case 32: - br13 |= COLOR_DEPTH_32; - br00 |= WRITE_ALPHA | WRITE_RGB; - break; - } - - START_RING(6); - OUT_RING(br00); - OUT_RING(br13); - OUT_RING(br14); - OUT_RING(br09); - OUT_RING(br16); - OUT_RING(MI_NOOP); - ADVANCE_RING(); - -#if VERBOSE > 0 - DBG_MSG("ring = 0x%08x, 0x%08x (%d)\n", dinfo->ring_head, - dinfo->ring_tail, dinfo->ring_space); -#endif -} - -void -intelfbhw_do_bitblt(struct intelfb_info *dinfo, u32 curx, u32 cury, - u32 dstx, u32 dsty, u32 w, u32 h, u32 pitch, u32 bpp) -{ - u32 br00, br09, br11, br12, br13, br22, br23, br26; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_do_bitblt: (%d,%d)->(%d,%d) %dx%d, p %d bpp %d\n", - curx, cury, dstx, dsty, w, h, pitch, bpp); -#endif - - br00 = XY_SRC_COPY_BLT_CMD; - br09 = dinfo->fb_start; - br11 = (pitch << PITCH_SHIFT); - br12 = dinfo->fb_start; - br13 = (SRC_ROP_GXCOPY << ROP_SHIFT) | (pitch << PITCH_SHIFT); - br22 = (dstx << WIDTH_SHIFT) | (dsty << HEIGHT_SHIFT); - br23 = ((dstx + w) << WIDTH_SHIFT) | - ((dsty + h) << HEIGHT_SHIFT); - br26 = (curx << WIDTH_SHIFT) | (cury << HEIGHT_SHIFT); - - switch (bpp) { - case 8: - br13 |= COLOR_DEPTH_8; - break; - case 16: - br13 |= COLOR_DEPTH_16; - break; - case 32: - br13 |= COLOR_DEPTH_32; - br00 |= WRITE_ALPHA | WRITE_RGB; - break; - } - - START_RING(8); - OUT_RING(br00); - OUT_RING(br13); - OUT_RING(br22); - OUT_RING(br23); - OUT_RING(br09); - OUT_RING(br26); - OUT_RING(br11); - OUT_RING(br12); - ADVANCE_RING(); -} - -int intelfbhw_do_drawglyph(struct intelfb_info *dinfo, u32 fg, u32 bg, u32 w, - u32 h, const u8* cdat, u32 x, u32 y, u32 pitch, - u32 bpp) -{ - int nbytes, ndwords, pad, tmp; - u32 br00, br09, br13, br18, br19, br22, br23; - int dat, ix, iy, iw; - int i, j; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_do_drawglyph: (%d,%d) %dx%d\n", x, y, w, h); -#endif - - /* size in bytes of a padded scanline */ - nbytes = ROUND_UP_TO(w, 16) / 8; - - /* Total bytes of padded scanline data to write out. */ - nbytes = nbytes * h; - - /* - * Check if the glyph data exceeds the immediate mode limit. - * It would take a large font (1K pixels) to hit this limit. - */ - if (nbytes > MAX_MONO_IMM_SIZE) - return 0; - - /* Src data is packaged a dword (32-bit) at a time. */ - ndwords = ROUND_UP_TO(nbytes, 4) / 4; - - /* - * Ring has to be padded to a quad word. But because the command starts - with 7 bytes, pad only if there is an even number of ndwords - */ - pad = !(ndwords % 2); - - tmp = (XY_MONO_SRC_IMM_BLT_CMD & DW_LENGTH_MASK) + ndwords; - br00 = (XY_MONO_SRC_IMM_BLT_CMD & ~DW_LENGTH_MASK) | tmp; - br09 = dinfo->fb_start; - br13 = (SRC_ROP_GXCOPY << ROP_SHIFT) | (pitch << PITCH_SHIFT); - br18 = bg; - br19 = fg; - br22 = (x << WIDTH_SHIFT) | (y << HEIGHT_SHIFT); - br23 = ((x + w) << WIDTH_SHIFT) | ((y + h) << HEIGHT_SHIFT); - - switch (bpp) { - case 8: - br13 |= COLOR_DEPTH_8; - break; - case 16: - br13 |= COLOR_DEPTH_16; - break; - case 32: - br13 |= COLOR_DEPTH_32; - br00 |= WRITE_ALPHA | WRITE_RGB; - break; - } - - START_RING(8 + ndwords); - OUT_RING(br00); - OUT_RING(br13); - OUT_RING(br22); - OUT_RING(br23); - OUT_RING(br09); - OUT_RING(br18); - OUT_RING(br19); - ix = iy = 0; - iw = ROUND_UP_TO(w, 8) / 8; - while (ndwords--) { - dat = 0; - for (j = 0; j < 2; ++j) { - for (i = 0; i < 2; ++i) { - if (ix != iw || i == 0) - dat |= cdat[iy*iw + ix++] << (i+j*2)*8; - } - if (ix == iw && iy != (h-1)) { - ix = 0; - ++iy; - } - } - OUT_RING(dat); - } - if (pad) - OUT_RING(MI_NOOP); - ADVANCE_RING(); - - return 1; -} - -/* HW cursor functions. */ -void intelfbhw_cursor_init(struct intelfb_info *dinfo) -{ - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_init\n"); -#endif - - if (dinfo->mobile || IS_I9XX(dinfo)) { - if (!dinfo->cursor.physical) - return; - tmp = INREG(CURSOR_A_CONTROL); - tmp &= ~(CURSOR_MODE_MASK | CURSOR_MOBILE_GAMMA_ENABLE | - CURSOR_MEM_TYPE_LOCAL | - (1 << CURSOR_PIPE_SELECT_SHIFT)); - tmp |= CURSOR_MODE_DISABLE; - OUTREG(CURSOR_A_CONTROL, tmp); - OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical); - } else { - tmp = INREG(CURSOR_CONTROL); - tmp &= ~(CURSOR_FORMAT_MASK | CURSOR_GAMMA_ENABLE | - CURSOR_ENABLE | CURSOR_STRIDE_MASK); - tmp |= CURSOR_FORMAT_3C; - OUTREG(CURSOR_CONTROL, tmp); - OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.offset << 12); - tmp = (64 << CURSOR_SIZE_H_SHIFT) | - (64 << CURSOR_SIZE_V_SHIFT); - OUTREG(CURSOR_SIZE, tmp); - } -} - -void intelfbhw_cursor_hide(struct intelfb_info *dinfo) -{ - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_hide\n"); -#endif - - dinfo->cursor_on = 0; - if (dinfo->mobile || IS_I9XX(dinfo)) { - if (!dinfo->cursor.physical) - return; - tmp = INREG(CURSOR_A_CONTROL); - tmp &= ~CURSOR_MODE_MASK; - tmp |= CURSOR_MODE_DISABLE; - OUTREG(CURSOR_A_CONTROL, tmp); - /* Flush changes */ - OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical); - } else { - tmp = INREG(CURSOR_CONTROL); - tmp &= ~CURSOR_ENABLE; - OUTREG(CURSOR_CONTROL, tmp); - } -} - -void intelfbhw_cursor_show(struct intelfb_info *dinfo) -{ - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_show\n"); -#endif - - dinfo->cursor_on = 1; - - if (dinfo->cursor_blanked) - return; - - if (dinfo->mobile || IS_I9XX(dinfo)) { - if (!dinfo->cursor.physical) - return; - tmp = INREG(CURSOR_A_CONTROL); - tmp &= ~CURSOR_MODE_MASK; - tmp |= CURSOR_MODE_64_4C_AX; - OUTREG(CURSOR_A_CONTROL, tmp); - /* Flush changes */ - OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical); - } else { - tmp = INREG(CURSOR_CONTROL); - tmp |= CURSOR_ENABLE; - OUTREG(CURSOR_CONTROL, tmp); - } -} - -void intelfbhw_cursor_setpos(struct intelfb_info *dinfo, int x, int y) -{ - u32 tmp; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_setpos: (%d, %d)\n", x, y); -#endif - - /* - * Sets the position. The coordinates are assumed to already - * have any offset adjusted. Assume that the cursor is never - * completely off-screen, and that x, y are always >= 0. - */ - - tmp = ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT) | - ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT); - OUTREG(CURSOR_A_POSITION, tmp); - - if (IS_I9XX(dinfo)) - OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical); -} - -void intelfbhw_cursor_setcolor(struct intelfb_info *dinfo, u32 bg, u32 fg) -{ -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_setcolor\n"); -#endif - - OUTREG(CURSOR_A_PALETTE0, bg & CURSOR_PALETTE_MASK); - OUTREG(CURSOR_A_PALETTE1, fg & CURSOR_PALETTE_MASK); - OUTREG(CURSOR_A_PALETTE2, fg & CURSOR_PALETTE_MASK); - OUTREG(CURSOR_A_PALETTE3, bg & CURSOR_PALETTE_MASK); -} - -void intelfbhw_cursor_load(struct intelfb_info *dinfo, int width, int height, - u8 *data) -{ - u8 __iomem *addr = (u8 __iomem *)dinfo->cursor.virtual; - int i, j, w = width / 8; - int mod = width % 8, t_mask, d_mask; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_load\n"); -#endif - - if (!dinfo->cursor.virtual) - return; - - t_mask = 0xff >> mod; - d_mask = ~(0xff >> mod); - for (i = height; i--; ) { - for (j = 0; j < w; j++) { - writeb(0x00, addr + j); - writeb(*(data++), addr + j+8); - } - if (mod) { - writeb(t_mask, addr + j); - writeb(*(data++) & d_mask, addr + j+8); - } - addr += 16; - } -} - -void intelfbhw_cursor_reset(struct intelfb_info *dinfo) -{ - u8 __iomem *addr = (u8 __iomem *)dinfo->cursor.virtual; - int i, j; - -#if VERBOSE > 0 - DBG_MSG("intelfbhw_cursor_reset\n"); -#endif - - if (!dinfo->cursor.virtual) - return; - - for (i = 64; i--; ) { - for (j = 0; j < 8; j++) { - writeb(0xff, addr + j+0); - writeb(0x00, addr + j+8); - } - addr += 16; - } -} - -static irqreturn_t intelfbhw_irq(int irq, void *dev_id) -{ - u16 tmp; - struct intelfb_info *dinfo = dev_id; - - spin_lock(&dinfo->int_lock); - - tmp = INREG16(IIR); - if (dinfo->info->var.vmode & FB_VMODE_INTERLACED) - tmp &= PIPE_A_EVENT_INTERRUPT; - else - tmp &= VSYNC_PIPE_A_INTERRUPT; /* non-interlaced */ - - if (tmp == 0) { - spin_unlock(&dinfo->int_lock); - return IRQ_RETVAL(0); /* not us */ - } - - /* clear status bits 0-15 ASAP and don't touch bits 16-31 */ - OUTREG(PIPEASTAT, INREG(PIPEASTAT)); - - OUTREG16(IIR, tmp); - if (dinfo->vsync.pan_display) { - dinfo->vsync.pan_display = 0; - OUTREG(DSPABASE, dinfo->vsync.pan_offset); - } - - dinfo->vsync.count++; - wake_up_interruptible(&dinfo->vsync.wait); - - spin_unlock(&dinfo->int_lock); - - return IRQ_RETVAL(1); -} - -int intelfbhw_enable_irq(struct intelfb_info *dinfo) -{ - u16 tmp; - if (!test_and_set_bit(0, &dinfo->irq_flags)) { - if (request_irq(dinfo->pdev->irq, intelfbhw_irq, IRQF_SHARED, - "intelfb", dinfo)) { - clear_bit(0, &dinfo->irq_flags); - return -EINVAL; - } - - spin_lock_irq(&dinfo->int_lock); - OUTREG16(HWSTAM, 0xfffe); /* i830 DRM uses ffff */ - OUTREG16(IMR, 0); - } else - spin_lock_irq(&dinfo->int_lock); - - if (dinfo->info->var.vmode & FB_VMODE_INTERLACED) - tmp = PIPE_A_EVENT_INTERRUPT; - else - tmp = VSYNC_PIPE_A_INTERRUPT; /* non-interlaced */ - if (tmp != INREG16(IER)) { - DBG_MSG("changing IER to 0x%X\n", tmp); - OUTREG16(IER, tmp); - } - - spin_unlock_irq(&dinfo->int_lock); - return 0; -} - -void intelfbhw_disable_irq(struct intelfb_info *dinfo) -{ - if (test_and_clear_bit(0, &dinfo->irq_flags)) { - if (dinfo->vsync.pan_display) { - dinfo->vsync.pan_display = 0; - OUTREG(DSPABASE, dinfo->vsync.pan_offset); - } - spin_lock_irq(&dinfo->int_lock); - OUTREG16(HWSTAM, 0xffff); - OUTREG16(IMR, 0xffff); - OUTREG16(IER, 0x0); - - OUTREG16(IIR, INREG16(IIR)); /* clear IRQ requests */ - spin_unlock_irq(&dinfo->int_lock); - - free_irq(dinfo->pdev->irq, dinfo); - } -} - -int intelfbhw_wait_for_vsync(struct intelfb_info *dinfo, u32 pipe) -{ - struct intelfb_vsync *vsync; - unsigned int count; - int ret; - - switch (pipe) { - case 0: - vsync = &dinfo->vsync; - break; - default: - return -ENODEV; - } - - ret = intelfbhw_enable_irq(dinfo); - if (ret) - return ret; - - count = vsync->count; - ret = wait_event_interruptible_timeout(vsync->wait, - count != vsync->count, HZ / 10); - if (ret < 0) - return ret; - if (ret == 0) { - DBG_MSG("wait_for_vsync timed out!\n"); - return -ETIMEDOUT; - } - - return 0; -} |