4 * Linux framebuffer driver for Intel(R) 865G integrated graphics chips.
6 * Copyright © 2002, 2003 David Dawes <dawes@xfree86.org>
9 * This driver consists of two parts. The first part (intelfbdrv.c) provides
10 * the basic fbdev interfaces, is derived in part from the radeonfb and
11 * vesafb drivers, and is covered by the GPL. The second part (intelfbhw.c)
12 * provides the code to program the hardware. Most of it is derived from
13 * the i810/i830 XFree86 driver. The HW-specific code is covered here
14 * under a dual license (GPL and MIT/XFree86 license).
20 /* $DHD: intelfb/intelfbhw.c,v 1.9 2003/06/27 15:06:25 dawes Exp $ */
22 #include <linux/config.h>
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/errno.h>
26 #include <linux/string.h>
28 #include <linux/tty.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
32 #include <linux/ioport.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/vmalloc.h>
36 #include <linux/pagemap.h>
41 #include "intelfbhw.h"
44 int min_m, max_m, min_m1, max_m1;
45 int min_m2, max_m2, min_n, max_n;
46 int min_p, max_p, min_p1, max_p1;
47 int min_vco, max_vco, p_transition_clk, ref_clk;
48 int p_inc_lo, p_inc_hi;
55 static struct pll_min_max plls[PLLS_MAX] = {
59 930000, 1400000, 165000, 48000,
65 1400000, 2800000, 200000, 96000,
70 intelfbhw_get_chipset(struct pci_dev *pdev, struct intelfb_info *dinfo)
76 switch (pdev->device) {
77 case PCI_DEVICE_ID_INTEL_830M:
78 dinfo->name = "Intel(R) 830M";
79 dinfo->chipset = INTEL_830M;
81 dinfo->pll_index = PLLS_I8xx;
83 case PCI_DEVICE_ID_INTEL_845G:
84 dinfo->name = "Intel(R) 845G";
85 dinfo->chipset = INTEL_845G;
87 dinfo->pll_index = PLLS_I8xx;
89 case PCI_DEVICE_ID_INTEL_85XGM:
92 dinfo->pll_index = PLLS_I8xx;
93 pci_read_config_dword(pdev, INTEL_85X_CAPID, &tmp);
94 switch ((tmp >> INTEL_85X_VARIANT_SHIFT) &
95 INTEL_85X_VARIANT_MASK) {
96 case INTEL_VAR_855GME:
97 dinfo->name = "Intel(R) 855GME";
98 dinfo->chipset = INTEL_855GME;
100 case INTEL_VAR_855GM:
101 dinfo->name = "Intel(R) 855GM";
102 dinfo->chipset = INTEL_855GM;
104 case INTEL_VAR_852GME:
105 dinfo->name = "Intel(R) 852GME";
106 dinfo->chipset = INTEL_852GME;
108 case INTEL_VAR_852GM:
109 dinfo->name = "Intel(R) 852GM";
110 dinfo->chipset = INTEL_852GM;
113 dinfo->name = "Intel(R) 852GM/855GM";
114 dinfo->chipset = INTEL_85XGM;
118 case PCI_DEVICE_ID_INTEL_865G:
119 dinfo->name = "Intel(R) 865G";
120 dinfo->chipset = INTEL_865G;
122 dinfo->pll_index = PLLS_I8xx;
124 case PCI_DEVICE_ID_INTEL_915G:
125 dinfo->name = "Intel(R) 915G";
126 dinfo->chipset = INTEL_915G;
128 dinfo->pll_index = PLLS_I9xx;
130 case PCI_DEVICE_ID_INTEL_915GM:
131 dinfo->name = "Intel(R) 915GM";
132 dinfo->chipset = INTEL_915GM;
134 dinfo->pll_index = PLLS_I9xx;
136 case PCI_DEVICE_ID_INTEL_945G:
137 dinfo->name = "Intel(R) 945G";
138 dinfo->chipset = INTEL_945G;
140 dinfo->pll_index = PLLS_I9xx;
142 case PCI_DEVICE_ID_INTEL_945GM:
143 dinfo->name = "Intel(R) 945GM";
144 dinfo->chipset = INTEL_945GM;
146 dinfo->pll_index = PLLS_I9xx;
154 intelfbhw_get_memory(struct pci_dev *pdev, int *aperture_size,
157 struct pci_dev *bridge_dev;
160 if (!pdev || !aperture_size || !stolen_size)
163 /* Find the bridge device. It is always 0:0.0 */
164 if (!(bridge_dev = pci_find_slot(0, PCI_DEVFN(0, 0)))) {
165 ERR_MSG("cannot find bridge device\n");
169 /* Get the fb aperture size and "stolen" memory amount. */
171 pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp);
172 switch (pdev->device) {
173 case PCI_DEVICE_ID_INTEL_830M:
174 case PCI_DEVICE_ID_INTEL_845G:
175 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
176 *aperture_size = MB(64);
178 *aperture_size = MB(128);
179 switch (tmp & INTEL_830_GMCH_GMS_MASK) {
180 case INTEL_830_GMCH_GMS_STOLEN_512:
181 *stolen_size = KB(512) - KB(132);
183 case INTEL_830_GMCH_GMS_STOLEN_1024:
184 *stolen_size = MB(1) - KB(132);
186 case INTEL_830_GMCH_GMS_STOLEN_8192:
187 *stolen_size = MB(8) - KB(132);
189 case INTEL_830_GMCH_GMS_LOCAL:
190 ERR_MSG("only local memory found\n");
192 case INTEL_830_GMCH_GMS_DISABLED:
193 ERR_MSG("video memory is disabled\n");
196 ERR_MSG("unexpected GMCH_GMS value: 0x%02x\n",
197 tmp & INTEL_830_GMCH_GMS_MASK);
202 *aperture_size = MB(128);
203 switch (tmp & INTEL_855_GMCH_GMS_MASK) {
204 case INTEL_855_GMCH_GMS_STOLEN_1M:
205 *stolen_size = MB(1) - KB(132);
207 case INTEL_855_GMCH_GMS_STOLEN_4M:
208 *stolen_size = MB(4) - KB(132);
210 case INTEL_855_GMCH_GMS_STOLEN_8M:
211 *stolen_size = MB(8) - KB(132);
213 case INTEL_855_GMCH_GMS_STOLEN_16M:
214 *stolen_size = MB(16) - KB(132);
216 case INTEL_855_GMCH_GMS_STOLEN_32M:
217 *stolen_size = MB(32) - KB(132);
219 case INTEL_915G_GMCH_GMS_STOLEN_48M:
220 *stolen_size = MB(48) - KB(132);
222 case INTEL_915G_GMCH_GMS_STOLEN_64M:
223 *stolen_size = MB(64) - KB(132);
225 case INTEL_855_GMCH_GMS_DISABLED:
226 ERR_MSG("video memory is disabled\n");
229 ERR_MSG("unexpected GMCH_GMS value: 0x%02x\n",
230 tmp & INTEL_855_GMCH_GMS_MASK);
237 intelfbhw_check_non_crt(struct intelfb_info *dinfo)
241 if (INREG(LVDS) & PORT_ENABLE)
243 if (INREG(DVOA) & PORT_ENABLE)
245 if (INREG(DVOB) & PORT_ENABLE)
247 if (INREG(DVOC) & PORT_ENABLE)
254 intelfbhw_dvo_to_string(int dvo)
258 else if (dvo & DVOB_PORT)
260 else if (dvo & DVOC_PORT)
262 else if (dvo & LVDS_PORT)
270 intelfbhw_validate_mode(struct intelfb_info *dinfo,
271 struct fb_var_screeninfo *var)
277 DBG_MSG("intelfbhw_validate_mode\n");
280 bytes_per_pixel = var->bits_per_pixel / 8;
281 if (bytes_per_pixel == 3)
284 /* Check if enough video memory. */
285 tmp = var->yres_virtual * var->xres_virtual * bytes_per_pixel;
286 if (tmp > dinfo->fb.size) {
287 WRN_MSG("Not enough video ram for mode "
288 "(%d KByte vs %d KByte).\n",
289 BtoKB(tmp), BtoKB(dinfo->fb.size));
293 /* Check if x/y limits are OK. */
294 if (var->xres - 1 > HACTIVE_MASK) {
295 WRN_MSG("X resolution too large (%d vs %d).\n",
296 var->xres, HACTIVE_MASK + 1);
299 if (var->yres - 1 > VACTIVE_MASK) {
300 WRN_MSG("Y resolution too large (%d vs %d).\n",
301 var->yres, VACTIVE_MASK + 1);
305 /* Check for interlaced/doublescan modes. */
306 if (var->vmode & FB_VMODE_INTERLACED) {
307 WRN_MSG("Mode is interlaced.\n");
310 if (var->vmode & FB_VMODE_DOUBLE) {
311 WRN_MSG("Mode is double-scan.\n");
315 /* Check if clock is OK. */
316 tmp = 1000000000 / var->pixclock;
317 if (tmp < MIN_CLOCK) {
318 WRN_MSG("Pixel clock is too low (%d MHz vs %d MHz).\n",
319 (tmp + 500) / 1000, MIN_CLOCK / 1000);
322 if (tmp > MAX_CLOCK) {
323 WRN_MSG("Pixel clock is too high (%d MHz vs %d MHz).\n",
324 (tmp + 500) / 1000, MAX_CLOCK / 1000);
332 intelfbhw_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
334 struct intelfb_info *dinfo = GET_DINFO(info);
335 u32 offset, xoffset, yoffset;
338 DBG_MSG("intelfbhw_pan_display\n");
341 xoffset = ROUND_DOWN_TO(var->xoffset, 8);
342 yoffset = var->yoffset;
344 if ((xoffset + var->xres > var->xres_virtual) ||
345 (yoffset + var->yres > var->yres_virtual))
348 offset = (yoffset * dinfo->pitch) +
349 (xoffset * var->bits_per_pixel) / 8;
351 offset += dinfo->fb.offset << 12;
353 OUTREG(DSPABASE, offset);
358 /* Blank the screen. */
360 intelfbhw_do_blank(int blank, struct fb_info *info)
362 struct intelfb_info *dinfo = GET_DINFO(info);
366 DBG_MSG("intelfbhw_do_blank: blank is %d\n", blank);
369 /* Turn plane A on or off */
370 tmp = INREG(DSPACNTR);
372 tmp &= ~DISPPLANE_PLANE_ENABLE;
374 tmp |= DISPPLANE_PLANE_ENABLE;
375 OUTREG(DSPACNTR, tmp);
377 tmp = INREG(DSPABASE);
378 OUTREG(DSPABASE, tmp);
380 /* Turn off/on the HW cursor */
382 DBG_MSG("cursor_on is %d\n", dinfo->cursor_on);
384 if (dinfo->cursor_on) {
386 intelfbhw_cursor_hide(dinfo);
388 intelfbhw_cursor_show(dinfo);
390 dinfo->cursor_on = 1;
392 dinfo->cursor_blanked = blank;
395 tmp = INREG(ADPA) & ~ADPA_DPMS_CONTROL_MASK;
397 case FB_BLANK_UNBLANK:
398 case FB_BLANK_NORMAL:
401 case FB_BLANK_VSYNC_SUSPEND:
404 case FB_BLANK_HSYNC_SUSPEND:
407 case FB_BLANK_POWERDOWN:
418 intelfbhw_setcolreg(struct intelfb_info *dinfo, unsigned regno,
419 unsigned red, unsigned green, unsigned blue,
423 DBG_MSG("intelfbhw_setcolreg: %d: (%d, %d, %d)\n",
424 regno, red, green, blue);
427 u32 palette_reg = (dinfo->pipe == PIPE_A) ?
428 PALETTE_A : PALETTE_B;
430 OUTREG(palette_reg + (regno << 2),
431 (red << PALETTE_8_RED_SHIFT) |
432 (green << PALETTE_8_GREEN_SHIFT) |
433 (blue << PALETTE_8_BLUE_SHIFT));
438 intelfbhw_read_hw_state(struct intelfb_info *dinfo, struct intelfb_hwstate *hw,
444 DBG_MSG("intelfbhw_read_hw_state\n");
450 /* Read in as much of the HW state as possible. */
451 hw->vga0_divisor = INREG(VGA0_DIVISOR);
452 hw->vga1_divisor = INREG(VGA1_DIVISOR);
453 hw->vga_pd = INREG(VGAPD);
454 hw->dpll_a = INREG(DPLL_A);
455 hw->dpll_b = INREG(DPLL_B);
456 hw->fpa0 = INREG(FPA0);
457 hw->fpa1 = INREG(FPA1);
458 hw->fpb0 = INREG(FPB0);
459 hw->fpb1 = INREG(FPB1);
465 /* This seems to be a problem with the 852GM/855GM */
466 for (i = 0; i < PALETTE_8_ENTRIES; i++) {
467 hw->palette_a[i] = INREG(PALETTE_A + (i << 2));
468 hw->palette_b[i] = INREG(PALETTE_B + (i << 2));
475 hw->htotal_a = INREG(HTOTAL_A);
476 hw->hblank_a = INREG(HBLANK_A);
477 hw->hsync_a = INREG(HSYNC_A);
478 hw->vtotal_a = INREG(VTOTAL_A);
479 hw->vblank_a = INREG(VBLANK_A);
480 hw->vsync_a = INREG(VSYNC_A);
481 hw->src_size_a = INREG(SRC_SIZE_A);
482 hw->bclrpat_a = INREG(BCLRPAT_A);
483 hw->htotal_b = INREG(HTOTAL_B);
484 hw->hblank_b = INREG(HBLANK_B);
485 hw->hsync_b = INREG(HSYNC_B);
486 hw->vtotal_b = INREG(VTOTAL_B);
487 hw->vblank_b = INREG(VBLANK_B);
488 hw->vsync_b = INREG(VSYNC_B);
489 hw->src_size_b = INREG(SRC_SIZE_B);
490 hw->bclrpat_b = INREG(BCLRPAT_B);
495 hw->adpa = INREG(ADPA);
496 hw->dvoa = INREG(DVOA);
497 hw->dvob = INREG(DVOB);
498 hw->dvoc = INREG(DVOC);
499 hw->dvoa_srcdim = INREG(DVOA_SRCDIM);
500 hw->dvob_srcdim = INREG(DVOB_SRCDIM);
501 hw->dvoc_srcdim = INREG(DVOC_SRCDIM);
502 hw->lvds = INREG(LVDS);
507 hw->pipe_a_conf = INREG(PIPEACONF);
508 hw->pipe_b_conf = INREG(PIPEBCONF);
509 hw->disp_arb = INREG(DISPARB);
514 hw->cursor_a_control = INREG(CURSOR_A_CONTROL);
515 hw->cursor_b_control = INREG(CURSOR_B_CONTROL);
516 hw->cursor_a_base = INREG(CURSOR_A_BASEADDR);
517 hw->cursor_b_base = INREG(CURSOR_B_BASEADDR);
522 for (i = 0; i < 4; i++) {
523 hw->cursor_a_palette[i] = INREG(CURSOR_A_PALETTE0 + (i << 2));
524 hw->cursor_b_palette[i] = INREG(CURSOR_B_PALETTE0 + (i << 2));
530 hw->cursor_size = INREG(CURSOR_SIZE);
535 hw->disp_a_ctrl = INREG(DSPACNTR);
536 hw->disp_b_ctrl = INREG(DSPBCNTR);
537 hw->disp_a_base = INREG(DSPABASE);
538 hw->disp_b_base = INREG(DSPBBASE);
539 hw->disp_a_stride = INREG(DSPASTRIDE);
540 hw->disp_b_stride = INREG(DSPBSTRIDE);
545 hw->vgacntrl = INREG(VGACNTRL);
550 hw->add_id = INREG(ADD_ID);
555 for (i = 0; i < 7; i++) {
556 hw->swf0x[i] = INREG(SWF00 + (i << 2));
557 hw->swf1x[i] = INREG(SWF10 + (i << 2));
559 hw->swf3x[i] = INREG(SWF30 + (i << 2));
562 for (i = 0; i < 8; i++)
563 hw->fence[i] = INREG(FENCE + (i << 2));
565 hw->instpm = INREG(INSTPM);
566 hw->mem_mode = INREG(MEM_MODE);
567 hw->fw_blc_0 = INREG(FW_BLC_0);
568 hw->fw_blc_1 = INREG(FW_BLC_1);
574 static int calc_vclock3(int index, int m, int n, int p)
576 if (p == 0 || n == 0)
578 return plls[index].ref_clk * m / n / p;
581 static int calc_vclock(int index, int m1, int m2, int n, int p1, int p2, int lvds)
590 p2_val = p2 ? 7 : 14;
592 p2_val = p2 ? 5 : 10;
593 return ((plls[index].ref_clk * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) /
597 return ((plls[index].ref_clk * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) /
598 ((p1+2) * (1 << (p2 + 1)))));
603 intelfbhw_print_hw_state(struct intelfb_info *dinfo, struct intelfb_hwstate *hw)
606 int i, m1, m2, n, p1, p2;
607 int index = dinfo->pll_index;
608 DBG_MSG("intelfbhw_print_hw_state\n");
612 /* Read in as much of the HW state as possible. */
613 printk("hw state dump start\n");
614 printk(" VGA0_DIVISOR: 0x%08x\n", hw->vga0_divisor);
615 printk(" VGA1_DIVISOR: 0x%08x\n", hw->vga1_divisor);
616 printk(" VGAPD: 0x%08x\n", hw->vga_pd);
617 n = (hw->vga0_divisor >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
618 m1 = (hw->vga0_divisor >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
619 m2 = (hw->vga0_divisor >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
620 if (hw->vga_pd & VGAPD_0_P1_FORCE_DIV2)
623 p1 = (hw->vga_pd >> VGAPD_0_P1_SHIFT) & DPLL_P1_MASK;
625 p2 = (hw->vga_pd >> VGAPD_0_P2_SHIFT) & DPLL_P2_MASK;
627 printk(" VGA0: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n",
629 printk(" VGA0: clock is %d\n",
630 calc_vclock(index, m1, m2, n, p1, p2, 0));
632 n = (hw->vga1_divisor >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
633 m1 = (hw->vga1_divisor >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
634 m2 = (hw->vga1_divisor >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
635 if (hw->vga_pd & VGAPD_1_P1_FORCE_DIV2)
638 p1 = (hw->vga_pd >> VGAPD_1_P1_SHIFT) & DPLL_P1_MASK;
639 p2 = (hw->vga_pd >> VGAPD_1_P2_SHIFT) & DPLL_P2_MASK;
640 printk(" VGA1: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n",
642 printk(" VGA1: clock is %d\n", calc_vclock(index, m1, m2, n, p1, p2, 0));
644 printk(" DPLL_A: 0x%08x\n", hw->dpll_a);
645 printk(" DPLL_B: 0x%08x\n", hw->dpll_b);
646 printk(" FPA0: 0x%08x\n", hw->fpa0);
647 printk(" FPA1: 0x%08x\n", hw->fpa1);
648 printk(" FPB0: 0x%08x\n", hw->fpb0);
649 printk(" FPB1: 0x%08x\n", hw->fpb1);
651 n = (hw->fpa0 >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
652 m1 = (hw->fpa0 >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
653 m2 = (hw->fpa0 >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
655 if (IS_I9XX(dinfo)) {
658 if (hw->dpll_a & DPLL_P1_FORCE_DIV2)
661 p1 = (hw->dpll_a >> DPLL_P1_SHIFT) & 0xff;
667 case 0x1: p1 = 1; break;
668 case 0x2: p1 = 2; break;
669 case 0x4: p1 = 3; break;
670 case 0x8: p1 = 4; break;
671 case 0x10: p1 = 5; break;
672 case 0x20: p1 = 6; break;
673 case 0x40: p1 = 7; break;
674 case 0x80: p1 = 8; break;
678 p2 = (hw->dpll_a >> DPLL_I9XX_P2_SHIFT) & DPLL_P2_MASK;
681 if (hw->dpll_a & DPLL_P1_FORCE_DIV2)
684 p1 = (hw->dpll_a >> DPLL_P1_SHIFT) & DPLL_P1_MASK;
685 p2 = (hw->dpll_a >> DPLL_P2_SHIFT) & DPLL_P2_MASK;
688 printk(" PLLA0: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n",
690 printk(" PLLA0: clock is %d\n", calc_vclock(index, m1, m2, n, p1, p2, 0));
692 n = (hw->fpa1 >> FP_N_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
693 m1 = (hw->fpa1 >> FP_M1_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
694 m2 = (hw->fpa1 >> FP_M2_DIVISOR_SHIFT) & FP_DIVISOR_MASK;
696 if (IS_I9XX(dinfo)) {
699 if (hw->dpll_a & DPLL_P1_FORCE_DIV2)
702 p1 = (hw->dpll_a >> DPLL_P1_SHIFT) & 0xff;
707 case 0x1: p1 = 1; break;
708 case 0x2: p1 = 2; break;
709 case 0x4: p1 = 3; break;
710 case 0x8: p1 = 4; break;
711 case 0x10: p1 = 5; break;
712 case 0x20: p1 = 6; break;
713 case 0x40: p1 = 7; break;
714 case 0x80: p1 = 8; break;
718 p2 = (hw->dpll_a >> DPLL_I9XX_P2_SHIFT) & DPLL_P2_MASK;
721 if (hw->dpll_a & DPLL_P1_FORCE_DIV2)
724 p1 = (hw->dpll_a >> DPLL_P1_SHIFT) & DPLL_P1_MASK;
725 p2 = (hw->dpll_a >> DPLL_P2_SHIFT) & DPLL_P2_MASK;
727 printk(" PLLA1: (m1, m2, n, p1, p2) = (%d, %d, %d, %d, %d)\n",
729 printk(" PLLA1: clock is %d\n", calc_vclock(index, m1, m2, n, p1, p2, 0));
732 printk(" PALETTE_A:\n");
733 for (i = 0; i < PALETTE_8_ENTRIES)
734 printk(" %3d: 0x%08x\n", i, hw->palette_a[i]);
735 printk(" PALETTE_B:\n");
736 for (i = 0; i < PALETTE_8_ENTRIES)
737 printk(" %3d: 0x%08x\n", i, hw->palette_b[i]);
740 printk(" HTOTAL_A: 0x%08x\n", hw->htotal_a);
741 printk(" HBLANK_A: 0x%08x\n", hw->hblank_a);
742 printk(" HSYNC_A: 0x%08x\n", hw->hsync_a);
743 printk(" VTOTAL_A: 0x%08x\n", hw->vtotal_a);
744 printk(" VBLANK_A: 0x%08x\n", hw->vblank_a);
745 printk(" VSYNC_A: 0x%08x\n", hw->vsync_a);
746 printk(" SRC_SIZE_A: 0x%08x\n", hw->src_size_a);
747 printk(" BCLRPAT_A: 0x%08x\n", hw->bclrpat_a);
748 printk(" HTOTAL_B: 0x%08x\n", hw->htotal_b);
749 printk(" HBLANK_B: 0x%08x\n", hw->hblank_b);
750 printk(" HSYNC_B: 0x%08x\n", hw->hsync_b);
751 printk(" VTOTAL_B: 0x%08x\n", hw->vtotal_b);
752 printk(" VBLANK_B: 0x%08x\n", hw->vblank_b);
753 printk(" VSYNC_B: 0x%08x\n", hw->vsync_b);
754 printk(" SRC_SIZE_B: 0x%08x\n", hw->src_size_b);
755 printk(" BCLRPAT_B: 0x%08x\n", hw->bclrpat_b);
757 printk(" ADPA: 0x%08x\n", hw->adpa);
758 printk(" DVOA: 0x%08x\n", hw->dvoa);
759 printk(" DVOB: 0x%08x\n", hw->dvob);
760 printk(" DVOC: 0x%08x\n", hw->dvoc);
761 printk(" DVOA_SRCDIM: 0x%08x\n", hw->dvoa_srcdim);
762 printk(" DVOB_SRCDIM: 0x%08x\n", hw->dvob_srcdim);
763 printk(" DVOC_SRCDIM: 0x%08x\n", hw->dvoc_srcdim);
764 printk(" LVDS: 0x%08x\n", hw->lvds);
766 printk(" PIPEACONF: 0x%08x\n", hw->pipe_a_conf);
767 printk(" PIPEBCONF: 0x%08x\n", hw->pipe_b_conf);
768 printk(" DISPARB: 0x%08x\n", hw->disp_arb);
770 printk(" CURSOR_A_CONTROL: 0x%08x\n", hw->cursor_a_control);
771 printk(" CURSOR_B_CONTROL: 0x%08x\n", hw->cursor_b_control);
772 printk(" CURSOR_A_BASEADDR: 0x%08x\n", hw->cursor_a_base);
773 printk(" CURSOR_B_BASEADDR: 0x%08x\n", hw->cursor_b_base);
775 printk(" CURSOR_A_PALETTE: ");
776 for (i = 0; i < 4; i++) {
777 printk("0x%08x", hw->cursor_a_palette[i]);
782 printk(" CURSOR_B_PALETTE: ");
783 for (i = 0; i < 4; i++) {
784 printk("0x%08x", hw->cursor_b_palette[i]);
790 printk(" CURSOR_SIZE: 0x%08x\n", hw->cursor_size);
792 printk(" DSPACNTR: 0x%08x\n", hw->disp_a_ctrl);
793 printk(" DSPBCNTR: 0x%08x\n", hw->disp_b_ctrl);
794 printk(" DSPABASE: 0x%08x\n", hw->disp_a_base);
795 printk(" DSPBBASE: 0x%08x\n", hw->disp_b_base);
796 printk(" DSPASTRIDE: 0x%08x\n", hw->disp_a_stride);
797 printk(" DSPBSTRIDE: 0x%08x\n", hw->disp_b_stride);
799 printk(" VGACNTRL: 0x%08x\n", hw->vgacntrl);
800 printk(" ADD_ID: 0x%08x\n", hw->add_id);
802 for (i = 0; i < 7; i++) {
803 printk(" SWF0%d 0x%08x\n", i,
806 for (i = 0; i < 7; i++) {
807 printk(" SWF1%d 0x%08x\n", i,
810 for (i = 0; i < 3; i++) {
811 printk(" SWF3%d 0x%08x\n", i,
814 for (i = 0; i < 8; i++)
815 printk(" FENCE%d 0x%08x\n", i,
818 printk(" INSTPM 0x%08x\n", hw->instpm);
819 printk(" MEM_MODE 0x%08x\n", hw->mem_mode);
820 printk(" FW_BLC_0 0x%08x\n", hw->fw_blc_0);
821 printk(" FW_BLC_1 0x%08x\n", hw->fw_blc_1);
823 printk("hw state dump end\n");
829 /* Split the M parameter into M1 and M2. */
831 splitm(int index, unsigned int m, unsigned int *retm1, unsigned int *retm2)
835 /* no point optimising too much - brute force m */
836 for (m1 = plls[index].min_m1; m1 < plls[index].max_m1+1; m1++) {
837 for (m2 = plls[index].min_m2; m2 < plls[index].max_m2+1; m2++) {
838 testm = (5 * (m1 + 2)) + (m2 + 2);
840 *retm1 = (unsigned int)m1;
841 *retm2 = (unsigned int)m2;
849 /* Split the P parameter into P1 and P2. */
851 splitp(int index, unsigned int p, unsigned int *retp1, unsigned int *retp2)
855 if (index == PLLS_I9xx) {
856 p2 = (p % 10) ? 1 : 0;
858 p1 = p / (p2 ? 5 : 10);
860 *retp1 = (unsigned int)p1;
861 *retp2 = (unsigned int)p2;
865 if (index == PLLS_I8xx) {
870 p1 = (p / (1 << (p2 + 1))) - 2;
871 if (p % 4 == 0 && p1 < plls[index].min_p1) {
873 p1 = (p / (1 << (p2 + 1))) - 2;
875 if (p1 < plls[index].min_p1 ||
876 p1 > plls[index].max_p1 ||
877 (p1 + 2) * (1 << (p2 + 1)) != p) {
880 *retp1 = (unsigned int)p1;
881 *retp2 = (unsigned int)p2;
889 calc_pll_params(int index, int clock, u32 *retm1, u32 *retm2, u32 *retn, u32 *retp1,
890 u32 *retp2, u32 *retclock)
892 u32 m1, m2, n, p1, p2, n1, testm;
893 u32 f_vco, p, p_best = 0, m, f_out = 0;
894 u32 err_max, err_target, err_best = 10000000;
895 u32 n_best = 0, m_best = 0, f_best, f_err;
896 u32 p_min, p_max, p_inc, div_max;
897 struct pll_min_max *pll = &plls[index];
899 /* Accept 0.5% difference, but aim for 0.1% */
900 err_max = 5 * clock / 1000;
901 err_target = clock / 1000;
903 DBG_MSG("Clock is %d\n", clock);
905 div_max = pll->max_vco / clock;
907 p_inc = (clock <= pll->p_transition_clk) ? pll->p_inc_lo : pll->p_inc_hi;
909 p_max = ROUND_DOWN_TO(div_max, p_inc);
910 if (p_min < pll->min_p)
912 if (p_max > pll->max_p)
915 DBG_MSG("p range is %d-%d (%d)\n", p_min, p_max, p_inc);
919 if (splitp(index, p, &p1, &p2)) {
920 WRN_MSG("cannot split p = %d\n", p);
928 m = ROUND_UP_TO(f_vco * n, pll->ref_clk) / pll->ref_clk;
933 for (testm = m - 1; testm <= m; testm++) {
934 f_out = calc_vclock3(index, m, n, p);
935 if (splitm(index, m, &m1, &m2)) {
936 WRN_MSG("cannot split m = %d\n", m);
941 f_err = clock - f_out;
942 else/* slightly bias the error for bigger clocks */
943 f_err = f_out - clock + 1;
945 if (f_err < err_best) {
954 } while ((n <= pll->max_n) && (f_out >= clock));
956 } while ((p <= p_max));
959 WRN_MSG("cannot find parameters for clock %d\n", clock);
965 splitm(index, m, &m1, &m2);
966 splitp(index, p, &p1, &p2);
969 DBG_MSG("m, n, p: %d (%d,%d), %d (%d), %d (%d,%d), "
970 "f: %d (%d), VCO: %d\n",
971 m, m1, m2, n, n1, p, p1, p2,
972 calc_vclock3(index, m, n, p),
973 calc_vclock(index, m1, m2, n1, p1, p2, 0),
974 calc_vclock3(index, m, n, p) * p);
980 *retclock = calc_vclock(index, m1, m2, n1, p1, p2, 0);
985 static __inline__ int
986 check_overflow(u32 value, u32 limit, const char *description)
989 WRN_MSG("%s value %d exceeds limit %d\n",
990 description, value, limit);
996 /* It is assumed that hw is filled in with the initial state information. */
998 intelfbhw_mode_to_hw(struct intelfb_info *dinfo, struct intelfb_hwstate *hw,
999 struct fb_var_screeninfo *var)
1002 u32 *dpll, *fp0, *fp1;
1003 u32 m1, m2, n, p1, p2, clock_target, clock;
1004 u32 hsync_start, hsync_end, hblank_start, hblank_end, htotal, hactive;
1005 u32 vsync_start, vsync_end, vblank_start, vblank_end, vtotal, vactive;
1006 u32 vsync_pol, hsync_pol;
1007 u32 *vs, *vb, *vt, *hs, *hb, *ht, *ss, *pipe_conf;
1008 u32 stride_alignment;
1010 DBG_MSG("intelfbhw_mode_to_hw\n");
1013 hw->vgacntrl |= VGA_DISABLE;
1015 /* Check whether pipe A or pipe B is enabled. */
1016 if (hw->pipe_a_conf & PIPECONF_ENABLE)
1018 else if (hw->pipe_b_conf & PIPECONF_ENABLE)
1021 /* Set which pipe's registers will be set. */
1022 if (pipe == PIPE_B) {
1032 ss = &hw->src_size_b;
1033 pipe_conf = &hw->pipe_b_conf;
1044 ss = &hw->src_size_a;
1045 pipe_conf = &hw->pipe_a_conf;
1048 /* Use ADPA register for sync control. */
1049 hw->adpa &= ~ADPA_USE_VGA_HVPOLARITY;
1052 hsync_pol = (var->sync & FB_SYNC_HOR_HIGH_ACT) ?
1053 ADPA_SYNC_ACTIVE_HIGH : ADPA_SYNC_ACTIVE_LOW;
1054 vsync_pol = (var->sync & FB_SYNC_VERT_HIGH_ACT) ?
1055 ADPA_SYNC_ACTIVE_HIGH : ADPA_SYNC_ACTIVE_LOW;
1056 hw->adpa &= ~((ADPA_SYNC_ACTIVE_MASK << ADPA_VSYNC_ACTIVE_SHIFT) |
1057 (ADPA_SYNC_ACTIVE_MASK << ADPA_HSYNC_ACTIVE_SHIFT));
1058 hw->adpa |= (hsync_pol << ADPA_HSYNC_ACTIVE_SHIFT) |
1059 (vsync_pol << ADPA_VSYNC_ACTIVE_SHIFT);
1061 /* Connect correct pipe to the analog port DAC */
1062 hw->adpa &= ~(PIPE_MASK << ADPA_PIPE_SELECT_SHIFT);
1063 hw->adpa |= (pipe << ADPA_PIPE_SELECT_SHIFT);
1065 /* Set DPMS state to D0 (on) */
1066 hw->adpa &= ~ADPA_DPMS_CONTROL_MASK;
1067 hw->adpa |= ADPA_DPMS_D0;
1069 hw->adpa |= ADPA_DAC_ENABLE;
1071 *dpll |= (DPLL_VCO_ENABLE | DPLL_VGA_MODE_DISABLE);
1072 *dpll &= ~(DPLL_RATE_SELECT_MASK | DPLL_REFERENCE_SELECT_MASK);
1073 *dpll |= (DPLL_REFERENCE_DEFAULT | DPLL_RATE_SELECT_FP0);
1075 /* Desired clock in kHz */
1076 clock_target = 1000000000 / var->pixclock;
1078 if (calc_pll_params(dinfo->pll_index, clock_target, &m1, &m2,
1079 &n, &p1, &p2, &clock)) {
1080 WRN_MSG("calc_pll_params failed\n");
1084 /* Check for overflow. */
1085 if (check_overflow(p1, DPLL_P1_MASK, "PLL P1 parameter"))
1087 if (check_overflow(p2, DPLL_P2_MASK, "PLL P2 parameter"))
1089 if (check_overflow(m1, FP_DIVISOR_MASK, "PLL M1 parameter"))
1091 if (check_overflow(m2, FP_DIVISOR_MASK, "PLL M2 parameter"))
1093 if (check_overflow(n, FP_DIVISOR_MASK, "PLL N parameter"))
1096 *dpll &= ~DPLL_P1_FORCE_DIV2;
1097 *dpll &= ~((DPLL_P2_MASK << DPLL_P2_SHIFT) |
1098 (DPLL_P1_MASK << DPLL_P1_SHIFT));
1100 if (IS_I9XX(dinfo)) {
1101 *dpll |= (p2 << DPLL_I9XX_P2_SHIFT);
1102 *dpll |= (1 << (p1 - 1)) << DPLL_P1_SHIFT;
1104 *dpll |= (p2 << DPLL_P2_SHIFT) | (p1 << DPLL_P1_SHIFT);
1107 *fp0 = (n << FP_N_DIVISOR_SHIFT) |
1108 (m1 << FP_M1_DIVISOR_SHIFT) |
1109 (m2 << FP_M2_DIVISOR_SHIFT);
1112 hw->dvob &= ~PORT_ENABLE;
1113 hw->dvoc &= ~PORT_ENABLE;
1115 /* Use display plane A. */
1116 hw->disp_a_ctrl |= DISPPLANE_PLANE_ENABLE;
1117 hw->disp_a_ctrl &= ~DISPPLANE_GAMMA_ENABLE;
1118 hw->disp_a_ctrl &= ~DISPPLANE_PIXFORMAT_MASK;
1119 switch (intelfb_var_to_depth(var)) {
1121 hw->disp_a_ctrl |= DISPPLANE_8BPP | DISPPLANE_GAMMA_ENABLE;
1124 hw->disp_a_ctrl |= DISPPLANE_15_16BPP;
1127 hw->disp_a_ctrl |= DISPPLANE_16BPP;
1130 hw->disp_a_ctrl |= DISPPLANE_32BPP_NO_ALPHA;
1133 hw->disp_a_ctrl &= ~(PIPE_MASK << DISPPLANE_SEL_PIPE_SHIFT);
1134 hw->disp_a_ctrl |= (pipe << DISPPLANE_SEL_PIPE_SHIFT);
1136 /* Set CRTC registers. */
1137 hactive = var->xres;
1138 hsync_start = hactive + var->right_margin;
1139 hsync_end = hsync_start + var->hsync_len;
1140 htotal = hsync_end + var->left_margin;
1141 hblank_start = hactive;
1142 hblank_end = htotal;
1144 DBG_MSG("H: act %d, ss %d, se %d, tot %d bs %d, be %d\n",
1145 hactive, hsync_start, hsync_end, htotal, hblank_start,
1148 vactive = var->yres;
1149 vsync_start = vactive + var->lower_margin;
1150 vsync_end = vsync_start + var->vsync_len;
1151 vtotal = vsync_end + var->upper_margin;
1152 vblank_start = vactive;
1153 vblank_end = vtotal;
1154 vblank_end = vsync_end + 1;
1156 DBG_MSG("V: act %d, ss %d, se %d, tot %d bs %d, be %d\n",
1157 vactive, vsync_start, vsync_end, vtotal, vblank_start,
1160 /* Adjust for register values, and check for overflow. */
1162 if (check_overflow(hactive, HACTIVE_MASK, "CRTC hactive"))
1165 if (check_overflow(hsync_start, HSYNCSTART_MASK, "CRTC hsync_start"))
1168 if (check_overflow(hsync_end, HSYNCEND_MASK, "CRTC hsync_end"))
1171 if (check_overflow(htotal, HTOTAL_MASK, "CRTC htotal"))
1174 if (check_overflow(hblank_start, HBLANKSTART_MASK, "CRTC hblank_start"))
1177 if (check_overflow(hblank_end, HBLANKEND_MASK, "CRTC hblank_end"))
1181 if (check_overflow(vactive, VACTIVE_MASK, "CRTC vactive"))
1184 if (check_overflow(vsync_start, VSYNCSTART_MASK, "CRTC vsync_start"))
1187 if (check_overflow(vsync_end, VSYNCEND_MASK, "CRTC vsync_end"))
1190 if (check_overflow(vtotal, VTOTAL_MASK, "CRTC vtotal"))
1193 if (check_overflow(vblank_start, VBLANKSTART_MASK, "CRTC vblank_start"))
1196 if (check_overflow(vblank_end, VBLANKEND_MASK, "CRTC vblank_end"))
1199 *ht = (htotal << HTOTAL_SHIFT) | (hactive << HACTIVE_SHIFT);
1200 *hb = (hblank_start << HBLANKSTART_SHIFT) |
1201 (hblank_end << HSYNCEND_SHIFT);
1202 *hs = (hsync_start << HSYNCSTART_SHIFT) | (hsync_end << HSYNCEND_SHIFT);
1204 *vt = (vtotal << VTOTAL_SHIFT) | (vactive << VACTIVE_SHIFT);
1205 *vb = (vblank_start << VBLANKSTART_SHIFT) |
1206 (vblank_end << VSYNCEND_SHIFT);
1207 *vs = (vsync_start << VSYNCSTART_SHIFT) | (vsync_end << VSYNCEND_SHIFT);
1208 *ss = (hactive << SRC_SIZE_HORIZ_SHIFT) |
1209 (vactive << SRC_SIZE_VERT_SHIFT);
1211 hw->disp_a_stride = dinfo->pitch;
1212 DBG_MSG("pitch is %d\n", hw->disp_a_stride);
1214 hw->disp_a_base = hw->disp_a_stride * var->yoffset +
1215 var->xoffset * var->bits_per_pixel / 8;
1217 hw->disp_a_base += dinfo->fb.offset << 12;
1219 /* Check stride alignment. */
1220 stride_alignment = IS_I9XX(dinfo) ? STRIDE_ALIGNMENT_I9XX :
1222 if (hw->disp_a_stride % stride_alignment != 0) {
1223 WRN_MSG("display stride %d has bad alignment %d\n",
1224 hw->disp_a_stride, stride_alignment);
1228 /* Set the palette to 8-bit mode. */
1229 *pipe_conf &= ~PIPECONF_GAMMA;
1233 /* Program a (non-VGA) video mode. */
1235 intelfbhw_program_mode(struct intelfb_info *dinfo,
1236 const struct intelfb_hwstate *hw, int blank)
1240 const u32 *dpll, *fp0, *fp1, *pipe_conf;
1241 const u32 *hs, *ht, *hb, *vs, *vt, *vb, *ss;
1242 u32 dpll_reg, fp0_reg, fp1_reg, pipe_conf_reg;
1243 u32 hsync_reg, htotal_reg, hblank_reg;
1244 u32 vsync_reg, vtotal_reg, vblank_reg;
1246 u32 count, tmp_val[3];
1248 /* Assume single pipe, display plane A, analog CRT. */
1251 DBG_MSG("intelfbhw_program_mode\n");
1255 tmp = INREG(VGACNTRL);
1257 OUTREG(VGACNTRL, tmp);
1259 /* Check whether pipe A or pipe B is enabled. */
1260 if (hw->pipe_a_conf & PIPECONF_ENABLE)
1262 else if (hw->pipe_b_conf & PIPECONF_ENABLE)
1267 if (pipe == PIPE_B) {
1271 pipe_conf = &hw->pipe_b_conf;
1278 ss = &hw->src_size_b;
1282 pipe_conf_reg = PIPEBCONF;
1283 hsync_reg = HSYNC_B;
1284 htotal_reg = HTOTAL_B;
1285 hblank_reg = HBLANK_B;
1286 vsync_reg = VSYNC_B;
1287 vtotal_reg = VTOTAL_B;
1288 vblank_reg = VBLANK_B;
1289 src_size_reg = SRC_SIZE_B;
1294 pipe_conf = &hw->pipe_a_conf;
1301 ss = &hw->src_size_a;
1305 pipe_conf_reg = PIPEACONF;
1306 hsync_reg = HSYNC_A;
1307 htotal_reg = HTOTAL_A;
1308 hblank_reg = HBLANK_A;
1309 vsync_reg = VSYNC_A;
1310 vtotal_reg = VTOTAL_A;
1311 vblank_reg = VBLANK_A;
1312 src_size_reg = SRC_SIZE_A;
1316 tmp = INREG(pipe_conf_reg);
1317 tmp &= ~PIPECONF_ENABLE;
1318 OUTREG(pipe_conf_reg, tmp);
1322 tmp_val[count%3] = INREG(0x70000);
1323 if ((tmp_val[0] == tmp_val[1]) && (tmp_val[1]==tmp_val[2]))
1327 if (count % 200 == 0) {
1328 tmp = INREG(pipe_conf_reg);
1329 tmp &= ~PIPECONF_ENABLE;
1330 OUTREG(pipe_conf_reg, tmp);
1332 } while(count < 2000);
1334 OUTREG(ADPA, INREG(ADPA) & ~ADPA_DAC_ENABLE);
1336 /* Disable planes A and B. */
1337 tmp = INREG(DSPACNTR);
1338 tmp &= ~DISPPLANE_PLANE_ENABLE;
1339 OUTREG(DSPACNTR, tmp);
1340 tmp = INREG(DSPBCNTR);
1341 tmp &= ~DISPPLANE_PLANE_ENABLE;
1342 OUTREG(DSPBCNTR, tmp);
1344 /* Wait for vblank. For now, just wait for a 50Hz cycle (20ms)) */
1349 tmp &= ~ADPA_DPMS_CONTROL_MASK;
1350 tmp |= ADPA_DPMS_D3;
1353 /* do some funky magic - xyzzy */
1354 OUTREG(0x61204, 0xabcd0000);
1357 tmp = INREG(dpll_reg);
1358 dpll_reg &= ~DPLL_VCO_ENABLE;
1359 OUTREG(dpll_reg, tmp);
1361 /* Set PLL parameters */
1362 OUTREG(dpll_reg, *dpll & ~DPLL_VCO_ENABLE);
1363 OUTREG(fp0_reg, *fp0);
1364 OUTREG(fp1_reg, *fp1);
1367 tmp = INREG(dpll_reg);
1368 tmp |= DPLL_VCO_ENABLE;
1369 OUTREG(dpll_reg, tmp);
1372 OUTREG(DVOB, hw->dvob);
1373 OUTREG(DVOC, hw->dvoc);
1375 /* undo funky magic */
1376 OUTREG(0x61204, 0x00000000);
1379 OUTREG(ADPA, INREG(ADPA) | ADPA_DAC_ENABLE);
1380 OUTREG(ADPA, (hw->adpa & ~(ADPA_DPMS_CONTROL_MASK)) | ADPA_DPMS_D3);
1382 /* Set pipe parameters */
1383 OUTREG(hsync_reg, *hs);
1384 OUTREG(hblank_reg, *hb);
1385 OUTREG(htotal_reg, *ht);
1386 OUTREG(vsync_reg, *vs);
1387 OUTREG(vblank_reg, *vb);
1388 OUTREG(vtotal_reg, *vt);
1389 OUTREG(src_size_reg, *ss);
1392 OUTREG(pipe_conf_reg, *pipe_conf | PIPECONF_ENABLE);
1396 tmp &= ~ADPA_DPMS_CONTROL_MASK;
1397 tmp |= ADPA_DPMS_D0;
1400 /* setup display plane */
1401 if (dinfo->pdev->device == PCI_DEVICE_ID_INTEL_830M) {
1403 * i830M errata: the display plane must be enabled
1404 * to allow writes to the other bits in the plane
1407 tmp = INREG(DSPACNTR);
1408 if ((tmp & DISPPLANE_PLANE_ENABLE) != DISPPLANE_PLANE_ENABLE) {
1409 tmp |= DISPPLANE_PLANE_ENABLE;
1410 OUTREG(DSPACNTR, tmp);
1412 hw->disp_a_ctrl|DISPPLANE_PLANE_ENABLE);
1417 OUTREG(DSPACNTR, hw->disp_a_ctrl & ~DISPPLANE_PLANE_ENABLE);
1418 OUTREG(DSPASTRIDE, hw->disp_a_stride);
1419 OUTREG(DSPABASE, hw->disp_a_base);
1423 tmp = INREG(DSPACNTR);
1424 tmp |= DISPPLANE_PLANE_ENABLE;
1425 OUTREG(DSPACNTR, tmp);
1426 OUTREG(DSPABASE, hw->disp_a_base);
1432 /* forward declarations */
1433 static void refresh_ring(struct intelfb_info *dinfo);
1434 static void reset_state(struct intelfb_info *dinfo);
1435 static void do_flush(struct intelfb_info *dinfo);
1438 wait_ring(struct intelfb_info *dinfo, int n)
1442 u32 last_head = INREG(PRI_RING_HEAD) & RING_HEAD_MASK;
1445 DBG_MSG("wait_ring: %d\n", n);
1448 end = jiffies + (HZ * 3);
1449 while (dinfo->ring_space < n) {
1450 dinfo->ring_head = (u8 __iomem *)(INREG(PRI_RING_HEAD) &
1452 if (dinfo->ring_tail + RING_MIN_FREE <
1453 (u32 __iomem) dinfo->ring_head)
1454 dinfo->ring_space = (u32 __iomem) dinfo->ring_head
1455 - (dinfo->ring_tail + RING_MIN_FREE);
1457 dinfo->ring_space = (dinfo->ring.size +
1458 (u32 __iomem) dinfo->ring_head)
1459 - (dinfo->ring_tail + RING_MIN_FREE);
1460 if ((u32 __iomem) dinfo->ring_head != last_head) {
1461 end = jiffies + (HZ * 3);
1462 last_head = (u32 __iomem) dinfo->ring_head;
1465 if (time_before(end, jiffies)) {
1469 refresh_ring(dinfo);
1471 end = jiffies + (HZ * 3);
1474 WRN_MSG("ring buffer : space: %d wanted %d\n",
1475 dinfo->ring_space, n);
1476 WRN_MSG("lockup - turning off hardware "
1478 dinfo->ring_lockup = 1;
1488 do_flush(struct intelfb_info *dinfo) {
1490 OUT_RING(MI_FLUSH | MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE);
1496 intelfbhw_do_sync(struct intelfb_info *dinfo)
1499 DBG_MSG("intelfbhw_do_sync\n");
1506 * Send a flush, then wait until the ring is empty. This is what
1507 * the XFree86 driver does, and actually it doesn't seem a lot worse
1508 * than the recommended method (both have problems).
1511 wait_ring(dinfo, dinfo->ring.size - RING_MIN_FREE);
1512 dinfo->ring_space = dinfo->ring.size - RING_MIN_FREE;
1516 refresh_ring(struct intelfb_info *dinfo)
1519 DBG_MSG("refresh_ring\n");
1522 dinfo->ring_head = (u8 __iomem *) (INREG(PRI_RING_HEAD) &
1524 dinfo->ring_tail = INREG(PRI_RING_TAIL) & RING_TAIL_MASK;
1525 if (dinfo->ring_tail + RING_MIN_FREE < (u32 __iomem)dinfo->ring_head)
1526 dinfo->ring_space = (u32 __iomem) dinfo->ring_head
1527 - (dinfo->ring_tail + RING_MIN_FREE);
1529 dinfo->ring_space = (dinfo->ring.size +
1530 (u32 __iomem) dinfo->ring_head)
1531 - (dinfo->ring_tail + RING_MIN_FREE);
1535 reset_state(struct intelfb_info *dinfo)
1541 DBG_MSG("reset_state\n");
1544 for (i = 0; i < FENCE_NUM; i++)
1545 OUTREG(FENCE + (i << 2), 0);
1547 /* Flush the ring buffer if it's enabled. */
1548 tmp = INREG(PRI_RING_LENGTH);
1549 if (tmp & RING_ENABLE) {
1551 DBG_MSG("reset_state: ring was enabled\n");
1553 refresh_ring(dinfo);
1554 intelfbhw_do_sync(dinfo);
1558 OUTREG(PRI_RING_LENGTH, 0);
1559 OUTREG(PRI_RING_HEAD, 0);
1560 OUTREG(PRI_RING_TAIL, 0);
1561 OUTREG(PRI_RING_START, 0);
1564 /* Stop the 2D engine, and turn off the ring buffer. */
1566 intelfbhw_2d_stop(struct intelfb_info *dinfo)
1569 DBG_MSG("intelfbhw_2d_stop: accel: %d, ring_active: %d\n", dinfo->accel,
1570 dinfo->ring_active);
1576 dinfo->ring_active = 0;
1581 * Enable the ring buffer, and initialise the 2D engine.
1582 * It is assumed that the graphics engine has been stopped by previously
1583 * calling intelfb_2d_stop().
1586 intelfbhw_2d_start(struct intelfb_info *dinfo)
1589 DBG_MSG("intelfbhw_2d_start: accel: %d, ring_active: %d\n",
1590 dinfo->accel, dinfo->ring_active);
1596 /* Initialise the primary ring buffer. */
1597 OUTREG(PRI_RING_LENGTH, 0);
1598 OUTREG(PRI_RING_TAIL, 0);
1599 OUTREG(PRI_RING_HEAD, 0);
1601 OUTREG(PRI_RING_START, dinfo->ring.physical & RING_START_MASK);
1602 OUTREG(PRI_RING_LENGTH,
1603 ((dinfo->ring.size - GTT_PAGE_SIZE) & RING_LENGTH_MASK) |
1604 RING_NO_REPORT | RING_ENABLE);
1605 refresh_ring(dinfo);
1606 dinfo->ring_active = 1;
1609 /* 2D fillrect (solid fill or invert) */
1611 intelfbhw_do_fillrect(struct intelfb_info *dinfo, u32 x, u32 y, u32 w, u32 h,
1612 u32 color, u32 pitch, u32 bpp, u32 rop)
1614 u32 br00, br09, br13, br14, br16;
1617 DBG_MSG("intelfbhw_do_fillrect: (%d,%d) %dx%d, c 0x%06x, p %d bpp %d, "
1618 "rop 0x%02x\n", x, y, w, h, color, pitch, bpp, rop);
1621 br00 = COLOR_BLT_CMD;
1622 br09 = dinfo->fb_start + (y * pitch + x * (bpp / 8));
1623 br13 = (rop << ROP_SHIFT) | pitch;
1624 br14 = (h << HEIGHT_SHIFT) | ((w * (bpp / 8)) << WIDTH_SHIFT);
1629 br13 |= COLOR_DEPTH_8;
1632 br13 |= COLOR_DEPTH_16;
1635 br13 |= COLOR_DEPTH_32;
1636 br00 |= WRITE_ALPHA | WRITE_RGB;
1650 DBG_MSG("ring = 0x%08x, 0x%08x (%d)\n", dinfo->ring_head,
1651 dinfo->ring_tail, dinfo->ring_space);
1656 intelfbhw_do_bitblt(struct intelfb_info *dinfo, u32 curx, u32 cury,
1657 u32 dstx, u32 dsty, u32 w, u32 h, u32 pitch, u32 bpp)
1659 u32 br00, br09, br11, br12, br13, br22, br23, br26;
1662 DBG_MSG("intelfbhw_do_bitblt: (%d,%d)->(%d,%d) %dx%d, p %d bpp %d\n",
1663 curx, cury, dstx, dsty, w, h, pitch, bpp);
1666 br00 = XY_SRC_COPY_BLT_CMD;
1667 br09 = dinfo->fb_start;
1668 br11 = (pitch << PITCH_SHIFT);
1669 br12 = dinfo->fb_start;
1670 br13 = (SRC_ROP_GXCOPY << ROP_SHIFT) | (pitch << PITCH_SHIFT);
1671 br22 = (dstx << WIDTH_SHIFT) | (dsty << HEIGHT_SHIFT);
1672 br23 = ((dstx + w) << WIDTH_SHIFT) |
1673 ((dsty + h) << HEIGHT_SHIFT);
1674 br26 = (curx << WIDTH_SHIFT) | (cury << HEIGHT_SHIFT);
1678 br13 |= COLOR_DEPTH_8;
1681 br13 |= COLOR_DEPTH_16;
1684 br13 |= COLOR_DEPTH_32;
1685 br00 |= WRITE_ALPHA | WRITE_RGB;
1702 intelfbhw_do_drawglyph(struct intelfb_info *dinfo, u32 fg, u32 bg, u32 w,
1703 u32 h, const u8* cdat, u32 x, u32 y, u32 pitch, u32 bpp)
1705 int nbytes, ndwords, pad, tmp;
1706 u32 br00, br09, br13, br18, br19, br22, br23;
1707 int dat, ix, iy, iw;
1711 DBG_MSG("intelfbhw_do_drawglyph: (%d,%d) %dx%d\n", x, y, w, h);
1714 /* size in bytes of a padded scanline */
1715 nbytes = ROUND_UP_TO(w, 16) / 8;
1717 /* Total bytes of padded scanline data to write out. */
1718 nbytes = nbytes * h;
1721 * Check if the glyph data exceeds the immediate mode limit.
1722 * It would take a large font (1K pixels) to hit this limit.
1724 if (nbytes > MAX_MONO_IMM_SIZE)
1727 /* Src data is packaged a dword (32-bit) at a time. */
1728 ndwords = ROUND_UP_TO(nbytes, 4) / 4;
1731 * Ring has to be padded to a quad word. But because the command starts
1732 with 7 bytes, pad only if there is an even number of ndwords
1734 pad = !(ndwords % 2);
1736 tmp = (XY_MONO_SRC_IMM_BLT_CMD & DW_LENGTH_MASK) + ndwords;
1737 br00 = (XY_MONO_SRC_IMM_BLT_CMD & ~DW_LENGTH_MASK) | tmp;
1738 br09 = dinfo->fb_start;
1739 br13 = (SRC_ROP_GXCOPY << ROP_SHIFT) | (pitch << PITCH_SHIFT);
1742 br22 = (x << WIDTH_SHIFT) | (y << HEIGHT_SHIFT);
1743 br23 = ((x + w) << WIDTH_SHIFT) | ((y + h) << HEIGHT_SHIFT);
1747 br13 |= COLOR_DEPTH_8;
1750 br13 |= COLOR_DEPTH_16;
1753 br13 |= COLOR_DEPTH_32;
1754 br00 |= WRITE_ALPHA | WRITE_RGB;
1758 START_RING(8 + ndwords);
1767 iw = ROUND_UP_TO(w, 8) / 8;
1770 for (j = 0; j < 2; ++j) {
1771 for (i = 0; i < 2; ++i) {
1772 if (ix != iw || i == 0)
1773 dat |= cdat[iy*iw + ix++] << (i+j*2)*8;
1775 if (ix == iw && iy != (h-1)) {
1789 /* HW cursor functions. */
1791 intelfbhw_cursor_init(struct intelfb_info *dinfo)
1796 DBG_MSG("intelfbhw_cursor_init\n");
1799 if (dinfo->mobile || IS_I9XX(dinfo)) {
1800 if (!dinfo->cursor.physical)
1802 tmp = INREG(CURSOR_A_CONTROL);
1803 tmp &= ~(CURSOR_MODE_MASK | CURSOR_MOBILE_GAMMA_ENABLE |
1804 CURSOR_MEM_TYPE_LOCAL |
1805 (1 << CURSOR_PIPE_SELECT_SHIFT));
1806 tmp |= CURSOR_MODE_DISABLE;
1807 OUTREG(CURSOR_A_CONTROL, tmp);
1808 OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical);
1810 tmp = INREG(CURSOR_CONTROL);
1811 tmp &= ~(CURSOR_FORMAT_MASK | CURSOR_GAMMA_ENABLE |
1812 CURSOR_ENABLE | CURSOR_STRIDE_MASK);
1813 tmp = CURSOR_FORMAT_3C;
1814 OUTREG(CURSOR_CONTROL, tmp);
1815 OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.offset << 12);
1816 tmp = (64 << CURSOR_SIZE_H_SHIFT) |
1817 (64 << CURSOR_SIZE_V_SHIFT);
1818 OUTREG(CURSOR_SIZE, tmp);
1823 intelfbhw_cursor_hide(struct intelfb_info *dinfo)
1828 DBG_MSG("intelfbhw_cursor_hide\n");
1831 dinfo->cursor_on = 0;
1832 if (dinfo->mobile || IS_I9XX(dinfo)) {
1833 if (!dinfo->cursor.physical)
1835 tmp = INREG(CURSOR_A_CONTROL);
1836 tmp &= ~CURSOR_MODE_MASK;
1837 tmp |= CURSOR_MODE_DISABLE;
1838 OUTREG(CURSOR_A_CONTROL, tmp);
1840 OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical);
1842 tmp = INREG(CURSOR_CONTROL);
1843 tmp &= ~CURSOR_ENABLE;
1844 OUTREG(CURSOR_CONTROL, tmp);
1849 intelfbhw_cursor_show(struct intelfb_info *dinfo)
1854 DBG_MSG("intelfbhw_cursor_show\n");
1857 dinfo->cursor_on = 1;
1859 if (dinfo->cursor_blanked)
1862 if (dinfo->mobile || IS_I9XX(dinfo)) {
1863 if (!dinfo->cursor.physical)
1865 tmp = INREG(CURSOR_A_CONTROL);
1866 tmp &= ~CURSOR_MODE_MASK;
1867 tmp |= CURSOR_MODE_64_4C_AX;
1868 OUTREG(CURSOR_A_CONTROL, tmp);
1870 OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical);
1872 tmp = INREG(CURSOR_CONTROL);
1873 tmp |= CURSOR_ENABLE;
1874 OUTREG(CURSOR_CONTROL, tmp);
1879 intelfbhw_cursor_setpos(struct intelfb_info *dinfo, int x, int y)
1884 DBG_MSG("intelfbhw_cursor_setpos: (%d, %d)\n", x, y);
1888 * Sets the position. The coordinates are assumed to already
1889 * have any offset adjusted. Assume that the cursor is never
1890 * completely off-screen, and that x, y are always >= 0.
1893 tmp = ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT) |
1894 ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);
1895 OUTREG(CURSOR_A_POSITION, tmp);
1897 if (IS_I9XX(dinfo)) {
1898 OUTREG(CURSOR_A_BASEADDR, dinfo->cursor.physical);
1903 intelfbhw_cursor_setcolor(struct intelfb_info *dinfo, u32 bg, u32 fg)
1906 DBG_MSG("intelfbhw_cursor_setcolor\n");
1909 OUTREG(CURSOR_A_PALETTE0, bg & CURSOR_PALETTE_MASK);
1910 OUTREG(CURSOR_A_PALETTE1, fg & CURSOR_PALETTE_MASK);
1911 OUTREG(CURSOR_A_PALETTE2, fg & CURSOR_PALETTE_MASK);
1912 OUTREG(CURSOR_A_PALETTE3, bg & CURSOR_PALETTE_MASK);
1916 intelfbhw_cursor_load(struct intelfb_info *dinfo, int width, int height,
1919 u8 __iomem *addr = (u8 __iomem *)dinfo->cursor.virtual;
1920 int i, j, w = width / 8;
1921 int mod = width % 8, t_mask, d_mask;
1924 DBG_MSG("intelfbhw_cursor_load\n");
1927 if (!dinfo->cursor.virtual)
1930 t_mask = 0xff >> mod;
1931 d_mask = ~(0xff >> mod);
1932 for (i = height; i--; ) {
1933 for (j = 0; j < w; j++) {
1934 writeb(0x00, addr + j);
1935 writeb(*(data++), addr + j+8);
1938 writeb(t_mask, addr + j);
1939 writeb(*(data++) & d_mask, addr + j+8);
1946 intelfbhw_cursor_reset(struct intelfb_info *dinfo) {
1947 u8 __iomem *addr = (u8 __iomem *)dinfo->cursor.virtual;
1951 DBG_MSG("intelfbhw_cursor_reset\n");
1954 if (!dinfo->cursor.virtual)
1957 for (i = 64; i--; ) {
1958 for (j = 0; j < 8; j++) {
1959 writeb(0xff, addr + j+0);
1960 writeb(0x00, addr + j+8);