Author: jkim Date: Mon Feb 27 18:28:18 2012 New Revision: 232236 URL: http://svn.freebsd.org/changeset/base/232236
Log: MFC: r231843, r232061, r232063, r232065, r232069 - Set the initial mode for the adapter after executing VESA BIOS POST. - Probe supported states for save/restore function. - Defer to VGA methods if no state is supported. Modified: stable/9/sys/dev/fb/vesa.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/dev/fb/vesa.c ============================================================================== --- stable/9/sys/dev/fb/vesa.c Mon Feb 27 18:17:03 2012 (r232235) +++ stable/9/sys/dev/fb/vesa.c Mon Feb 27 18:28:18 2012 (r232236) @@ -1,6 +1,6 @@ /*- * Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith - * Copyright (c) 2009-2010 Jung-uk Kim <[email protected]> + * Copyright (c) 2009-2012 Jung-uk Kim <[email protected]> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -80,6 +80,7 @@ typedef struct adp_state adp_state_t; static struct mtx vesa_lock; +static int vesa_state; static void *vesa_state_buf = NULL; static uint32_t vesa_state_buf_offs = 0; static ssize_t vesa_state_buf_size = 0; @@ -205,13 +206,7 @@ static int vesa_bios_load_palette2(int s #define STATE_SIZE 0 #define STATE_SAVE 1 #define STATE_LOAD 2 -#define STATE_HW (1<<0) -#define STATE_DATA (1<<1) -#define STATE_DAC (1<<2) -#define STATE_REG (1<<3) -#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG) -#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG) -static ssize_t vesa_bios_state_buf_size(void); +static ssize_t vesa_bios_state_buf_size(int); static int vesa_bios_save_restore(int code, void *p); #ifdef MODE_TABLE_BROKEN static int vesa_bios_get_line_length(void); @@ -509,14 +504,14 @@ vesa_bios_load_palette2(int start, int c } static ssize_t -vesa_bios_state_buf_size(void) +vesa_bios_state_buf_size(int state) { x86regs_t regs; x86bios_init_regs(®s); regs.R_AX = 0x4f04; /* regs.R_DL = STATE_SIZE; */ - regs.R_CX = STATE_MOST; + regs.R_CX = state; x86bios_intr(®s, 0x10); @@ -537,7 +532,7 @@ vesa_bios_save_restore(int code, void *p x86bios_init_regs(®s); regs.R_AX = 0x4f04; regs.R_DL = code; - regs.R_CX = STATE_MOST; + regs.R_CX = vesa_state; regs.R_ES = X86BIOS_PHYSTOSEG(vesa_state_buf_offs); regs.R_BX = X86BIOS_PHYSTOOFF(vesa_state_buf_offs); @@ -1041,7 +1036,12 @@ vesa_bios_init(void) x86bios_free(vmbuf, sizeof(*buf)); - vesa_state_buf_size = vesa_bios_state_buf_size(); + /* Probe supported save/restore states. */ + for (i = 0; i < 4; i++) + if (vesa_bios_state_buf_size(1 << i) > 0) + vesa_state |= 1 << i; + if (vesa_state != 0) + vesa_state_buf_size = vesa_bios_state_buf_size(vesa_state); vesa_palette = x86bios_alloc(&vesa_palette_offs, VESA_PALETTE_SIZE + vesa_state_buf_size, M_WAITOK); if (vesa_state_buf_size > 0) { @@ -1451,15 +1451,13 @@ static int vesa_save_state(video_adapter_t *adp, void *p, size_t size) { - if (adp != vesa_adp) + if (adp != vesa_adp || vesa_state_buf_size == 0) return ((*prevvidsw->save_state)(adp, p, size)); - if (vesa_state_buf_size == 0) - return (1); if (size == 0) return (offsetof(adp_state_t, regs) + vesa_state_buf_size); if (size < (offsetof(adp_state_t, regs) + vesa_state_buf_size)) - return (1); + return (EINVAL); ((adp_state_t *)p)->sig = V_STATE_SIG; bzero(((adp_state_t *)p)->regs, vesa_state_buf_size); @@ -1469,18 +1467,20 @@ vesa_save_state(video_adapter_t *adp, vo static int vesa_load_state(video_adapter_t *adp, void *p) { + int mode; - if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG)) + if (adp != vesa_adp) return ((*prevvidsw->load_state)(adp, p)); - if (vesa_state_buf_size == 0) - return (1); - /* Try BIOS POST to restore a sane state. */ (void)vesa_bios_post(); - (void)int10_set_mode(adp->va_initial_bios_mode); - (void)vesa_set_mode(adp, adp->va_mode); + mode = adp->va_mode; + (void)vesa_set_mode(adp, adp->va_initial_mode); + if (mode != adp->va_initial_mode) + (void)vesa_set_mode(adp, mode); + if (((adp_state_t *)p)->sig != V_STATE_SIG) + return ((*prevvidsw->load_state)(adp, p)); return (vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs)); } _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
