mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
63e28a7a5f
The old code allowed very strange memory types. Now it works like all the other video drivers: ioremap_wc is used unconditionally, and MTRRs are set if PAT is unavailable (unless MTRR is disabled by a module parameter). UC, WB, and WT support is gone. If there are MTRR conflicts that prevent addition of a WC MTRR, adding a non-conflicting MTRR is pointless; it's better to just turn off MTRR support entirely. As an added bonus, any MTRR added is freed on unload. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
140 lines
2.8 KiB
C
140 lines
2.8 KiB
C
#ifndef _UVESAFB_H
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#define _UVESAFB_H
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#include <uapi/video/uvesafb.h>
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/* VBE CRTC Info Block */
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struct vbe_crtc_ib {
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u16 horiz_total;
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u16 horiz_start;
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u16 horiz_end;
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u16 vert_total;
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u16 vert_start;
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u16 vert_end;
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u8 flags;
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u32 pixel_clock;
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u16 refresh_rate;
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u8 reserved[40];
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} __attribute__ ((packed));
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#define VBE_MODE_VGACOMPAT 0x20
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#define VBE_MODE_COLOR 0x08
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#define VBE_MODE_SUPPORTEDHW 0x01
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#define VBE_MODE_GRAPHICS 0x10
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#define VBE_MODE_LFB 0x80
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#define VBE_MODE_MASK (VBE_MODE_COLOR | VBE_MODE_SUPPORTEDHW | \
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VBE_MODE_GRAPHICS | VBE_MODE_LFB)
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/* VBE Mode Info Block */
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struct vbe_mode_ib {
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/* for all VBE revisions */
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u16 mode_attr;
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u8 winA_attr;
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u8 winB_attr;
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u16 win_granularity;
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u16 win_size;
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u16 winA_seg;
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u16 winB_seg;
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u32 win_func_ptr;
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u16 bytes_per_scan_line;
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/* for VBE 1.2+ */
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u16 x_res;
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u16 y_res;
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u8 x_char_size;
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u8 y_char_size;
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u8 planes;
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u8 bits_per_pixel;
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u8 banks;
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u8 memory_model;
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u8 bank_size;
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u8 image_pages;
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u8 reserved1;
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/* Direct color fields for direct/6 and YUV/7 memory models. */
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/* Offsets are bit positions of lsb in the mask. */
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u8 red_len;
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u8 red_off;
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u8 green_len;
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u8 green_off;
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u8 blue_len;
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u8 blue_off;
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u8 rsvd_len;
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u8 rsvd_off;
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u8 direct_color_info; /* direct color mode attributes */
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/* for VBE 2.0+ */
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u32 phys_base_ptr;
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u8 reserved2[6];
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/* for VBE 3.0+ */
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u16 lin_bytes_per_scan_line;
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u8 bnk_image_pages;
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u8 lin_image_pages;
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u8 lin_red_len;
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u8 lin_red_off;
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u8 lin_green_len;
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u8 lin_green_off;
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u8 lin_blue_len;
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u8 lin_blue_off;
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u8 lin_rsvd_len;
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u8 lin_rsvd_off;
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u32 max_pixel_clock;
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u16 mode_id;
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u8 depth;
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} __attribute__ ((packed));
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#define UVESAFB_DEFAULT_MODE "640x480-16"
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/* How long to wait for a reply from userspace [ms] */
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#define UVESAFB_TIMEOUT 5000
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/* Max number of concurrent tasks */
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#define UVESAFB_TASKS_MAX 16
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#define dac_reg (0x3c8)
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#define dac_val (0x3c9)
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struct uvesafb_pal_entry {
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u_char blue, green, red, pad;
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} __attribute__ ((packed));
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struct uvesafb_ktask {
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struct uvesafb_task t;
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void *buf;
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struct completion *done;
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u32 ack;
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};
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static int uvesafb_exec(struct uvesafb_ktask *tsk);
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#define UVESAFB_EXACT_RES 1
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#define UVESAFB_EXACT_DEPTH 2
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struct uvesafb_par {
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struct vbe_ib vbe_ib; /* VBE Info Block */
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struct vbe_mode_ib *vbe_modes; /* list of supported VBE modes */
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int vbe_modes_cnt;
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u8 nocrtc;
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u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */
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u8 pmi_setpal; /* PMI for palette changes */
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u16 *pmi_base; /* protected mode interface location */
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void *pmi_start;
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void *pmi_pal;
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u8 *vbe_state_orig; /*
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* original hardware state, before the
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* driver was loaded
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*/
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u8 *vbe_state_saved; /* state saved by fb_save_state */
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int vbe_state_size;
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atomic_t ref_count;
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int mode_idx;
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struct vbe_crtc_ib crtc;
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int mtrr_handle;
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};
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#endif /* _UVESAFB_H */
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