generic VGA API layer

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@890 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 122 insertions, 0 deletions

diff --git a/hw/vga_int.h b/hw/vga_int.h
new file mode 100644
index 000000000..73618ab59
--- /dev/null
+++ b/hw/vga_int.h
@@ -0,0 +1,122 @@
+/*
+ * QEMU internal VGA defines.
+ * 
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#define MSR_COLOR_EMULATION 0x01
+#define MSR_PAGE_SELECT     0x20
+
+#define ST01_V_RETRACE      0x08
+#define ST01_DISP_ENABLE    0x01
+
+/* bochs VBE support */
+#define CONFIG_BOCHS_VBE
+
+#define VBE_DISPI_MAX_XRES              1024
+#define VBE_DISPI_MAX_YRES              768
+
+#define VBE_DISPI_INDEX_ID              0x0
+#define VBE_DISPI_INDEX_XRES            0x1
+#define VBE_DISPI_INDEX_YRES            0x2
+#define VBE_DISPI_INDEX_BPP             0x3
+#define VBE_DISPI_INDEX_ENABLE          0x4
+#define VBE_DISPI_INDEX_BANK            0x5
+#define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
+#define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
+#define VBE_DISPI_INDEX_X_OFFSET        0x8
+#define VBE_DISPI_INDEX_Y_OFFSET        0x9
+#define VBE_DISPI_INDEX_NB              0xa
+      
+#define VBE_DISPI_ID0                   0xB0C0
+#define VBE_DISPI_ID1                   0xB0C1
+#define VBE_DISPI_ID2                   0xB0C2
+  
+#define VBE_DISPI_DISABLED              0x00
+#define VBE_DISPI_ENABLED               0x01
+#define VBE_DISPI_LFB_ENABLED           0x40
+#define VBE_DISPI_NOCLEARMEM            0x80
+  
+#define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
+
+typedef struct VGAState {
+    uint8_t *vram_ptr;
+    unsigned long vram_offset;
+    unsigned int vram_size;
+    uint32_t latch;
+    uint8_t sr_index;
+    uint8_t sr[256];
+    uint8_t gr_index;
+    uint8_t gr[256];
+    uint8_t ar_index;
+    uint8_t ar[21];
+    int ar_flip_flop;
+    uint8_t cr_index;
+    uint8_t cr[256]; /* CRT registers */
+    uint8_t msr; /* Misc Output Register */
+    uint8_t fcr; /* Feature Control Register */
+    uint8_t st00; /* status 0 */
+    uint8_t st01; /* status 1 */
+    uint8_t dac_state;
+    uint8_t dac_sub_index;
+    uint8_t dac_read_index;
+    uint8_t dac_write_index;
+    uint8_t dac_cache[3]; /* used when writing */
+    uint8_t palette[768];
+    int32_t bank_offset;
+    int (*get_bpp)(struct VGAState *s);
+    void (*get_offsets)(struct VGAState *s, 
+                        uint32_t *pline_offset, 
+                        uint32_t *pstart_addr);
+#ifdef CONFIG_BOCHS_VBE
+    uint16_t vbe_index;
+    uint16_t vbe_regs[VBE_DISPI_INDEX_NB];
+    uint32_t vbe_start_addr;
+    uint32_t vbe_line_offset;
+    uint32_t vbe_bank_mask;
+#endif
+    /* display refresh support */
+    DisplayState *ds;
+    uint32_t font_offsets[2];
+    int graphic_mode;
+    uint8_t shift_control;
+    uint8_t double_scan;
+    uint32_t line_offset;
+    uint32_t line_compare;
+    uint32_t start_addr;
+    uint8_t last_cw, last_ch;
+    uint32_t last_width, last_height; /* in chars or pixels */
+    uint32_t last_scr_width, last_scr_height; /* in pixels */
+    uint8_t cursor_start, cursor_end;
+    uint32_t cursor_offset;
+    unsigned int (*rgb_to_pixel)(unsigned int r, unsigned int g, unsigned b);
+    /* tell for each page if it has been updated since the last time */
+    uint32_t last_palette[256];
+#define CH_ATTR_SIZE (160 * 100)
+    uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
+} VGAState;
+
+void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base, 
+                     unsigned long vga_ram_offset, int vga_ram_size);
+uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr);
+void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val);
+
+extern const uint8_t sr_mask[8];
+extern const uint8_t gr_mask[16];