i915: add suspend/resume support
Add suspend/resume support to the i915 driver. Moves some of the
initialization into the driver load routine, and fixes up places where we
assumed no dev_private existed in some of the cleanup paths. This allows
us to suspend/resume properly even if X isn't running.
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/i915_drv.h b/drivers/char/drm/i915_drv.h
index f8cc719..661e2f5 100644
--- a/drivers/char/drm/i915_drv.h
+++ b/drivers/char/drm/i915_drv.h
@@ -114,6 +114,85 @@
spinlock_t swaps_lock;
drm_i915_vbl_swap_t vbl_swaps;
unsigned int swaps_pending;
+
+ /* Register state */
+ u8 saveLBB;
+ u32 saveDSPACNTR;
+ u32 saveDSPBCNTR;
+ u32 savePIPEACONF;
+ u32 savePIPEBCONF;
+ u32 savePIPEASRC;
+ u32 savePIPEBSRC;
+ u32 saveFPA0;
+ u32 saveFPA1;
+ u32 saveDPLL_A;
+ u32 saveDPLL_A_MD;
+ u32 saveHTOTAL_A;
+ u32 saveHBLANK_A;
+ u32 saveHSYNC_A;
+ u32 saveVTOTAL_A;
+ u32 saveVBLANK_A;
+ u32 saveVSYNC_A;
+ u32 saveBCLRPAT_A;
+ u32 saveDSPASTRIDE;
+ u32 saveDSPASIZE;
+ u32 saveDSPAPOS;
+ u32 saveDSPABASE;
+ u32 saveDSPASURF;
+ u32 saveDSPATILEOFF;
+ u32 savePFIT_PGM_RATIOS;
+ u32 saveBLC_PWM_CTL;
+ u32 saveBLC_PWM_CTL2;
+ u32 saveFPB0;
+ u32 saveFPB1;
+ u32 saveDPLL_B;
+ u32 saveDPLL_B_MD;
+ u32 saveHTOTAL_B;
+ u32 saveHBLANK_B;
+ u32 saveHSYNC_B;
+ u32 saveVTOTAL_B;
+ u32 saveVBLANK_B;
+ u32 saveVSYNC_B;
+ u32 saveBCLRPAT_B;
+ u32 saveDSPBSTRIDE;
+ u32 saveDSPBSIZE;
+ u32 saveDSPBPOS;
+ u32 saveDSPBBASE;
+ u32 saveDSPBSURF;
+ u32 saveDSPBTILEOFF;
+ u32 saveVCLK_DIVISOR_VGA0;
+ u32 saveVCLK_DIVISOR_VGA1;
+ u32 saveVCLK_POST_DIV;
+ u32 saveVGACNTRL;
+ u32 saveADPA;
+ u32 saveLVDS;
+ u32 saveLVDSPP_ON;
+ u32 saveLVDSPP_OFF;
+ u32 saveDVOA;
+ u32 saveDVOB;
+ u32 saveDVOC;
+ u32 savePP_ON;
+ u32 savePP_OFF;
+ u32 savePP_CONTROL;
+ u32 savePP_CYCLE;
+ u32 savePFIT_CONTROL;
+ u32 save_palette_a[256];
+ u32 save_palette_b[256];
+ u32 saveFBC_CFB_BASE;
+ u32 saveFBC_LL_BASE;
+ u32 saveFBC_CONTROL;
+ u32 saveFBC_CONTROL2;
+ u32 saveSWF0[16];
+ u32 saveSWF1[16];
+ u32 saveSWF2[3];
+ u8 saveMSR;
+ u8 saveSR[8];
+ u8 saveGR[24];
+ u8 saveAR_INDEX;
+ u8 saveAR[20];
+ u8 saveDACMASK;
+ u8 saveDACDATA[256*3]; /* 256 3-byte colors */
+ u8 saveCR[36];
} drm_i915_private_t;
extern struct drm_ioctl_desc i915_ioctls[];
@@ -122,6 +201,7 @@
/* i915_dma.c */
extern void i915_kernel_lost_context(struct drm_device * dev);
extern int i915_driver_load(struct drm_device *, unsigned long flags);
+extern int i915_driver_unload(struct drm_device *);
extern void i915_driver_lastclose(struct drm_device * dev);
extern void i915_driver_preclose(struct drm_device *dev,
struct drm_file *file_priv);
@@ -200,6 +280,50 @@
extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
+/* Extended config space */
+#define LBB 0xf4
+
+/* VGA stuff */
+
+#define VGA_ST01_MDA 0x3ba
+#define VGA_ST01_CGA 0x3da
+
+#define VGA_MSR_WRITE 0x3c2
+#define VGA_MSR_READ 0x3cc
+#define VGA_MSR_MEM_EN (1<<1)
+#define VGA_MSR_CGA_MODE (1<<0)
+
+#define VGA_SR_INDEX 0x3c4
+#define VGA_SR_DATA 0x3c5
+
+#define VGA_AR_INDEX 0x3c0
+#define VGA_AR_VID_EN (1<<5)
+#define VGA_AR_DATA_WRITE 0x3c0
+#define VGA_AR_DATA_READ 0x3c1
+
+#define VGA_GR_INDEX 0x3ce
+#define VGA_GR_DATA 0x3cf
+/* GR05 */
+#define VGA_GR_MEM_READ_MODE_SHIFT 3
+#define VGA_GR_MEM_READ_MODE_PLANE 1
+/* GR06 */
+#define VGA_GR_MEM_MODE_MASK 0xc
+#define VGA_GR_MEM_MODE_SHIFT 2
+#define VGA_GR_MEM_A0000_AFFFF 0
+#define VGA_GR_MEM_A0000_BFFFF 1
+#define VGA_GR_MEM_B0000_B7FFF 2
+#define VGA_GR_MEM_B0000_BFFFF 3
+
+#define VGA_DACMASK 0x3c6
+#define VGA_DACRX 0x3c7
+#define VGA_DACWX 0x3c8
+#define VGA_DACDATA 0x3c9
+
+#define VGA_CR_INDEX_MDA 0x3b4
+#define VGA_CR_DATA_MDA 0x3b5
+#define VGA_CR_INDEX_CGA 0x3d4
+#define VGA_CR_DATA_CGA 0x3d5
+
#define GFX_OP_USER_INTERRUPT ((0<<29)|(2<<23))
#define GFX_OP_BREAKPOINT_INTERRUPT ((0<<29)|(1<<23))
#define CMD_REPORT_HEAD (7<<23)
@@ -215,6 +339,44 @@
#define BB1_UNPROTECTED (0<<0)
#define BB2_END_ADDR_MASK (~0x7)
+/* Framebuffer compression */
+#define FBC_CFB_BASE 0x03200 /* 4k page aligned */
+#define FBC_LL_BASE 0x03204 /* 4k page aligned */
+#define FBC_CONTROL 0x03208
+#define FBC_CTL_EN (1<<31)
+#define FBC_CTL_PERIODIC (1<<30)
+#define FBC_CTL_INTERVAL_SHIFT (16)
+#define FBC_CTL_UNCOMPRESSIBLE (1<<14)
+#define FBC_CTL_STRIDE_SHIFT (5)
+#define FBC_CTL_FENCENO (1<<0)
+#define FBC_COMMAND 0x0320c
+#define FBC_CMD_COMPRESS (1<<0)
+#define FBC_STATUS 0x03210
+#define FBC_STAT_COMPRESSING (1<<31)
+#define FBC_STAT_COMPRESSED (1<<30)
+#define FBC_STAT_MODIFIED (1<<29)
+#define FBC_STAT_CURRENT_LINE (1<<0)
+#define FBC_CONTROL2 0x03214
+#define FBC_CTL_FENCE_DBL (0<<4)
+#define FBC_CTL_IDLE_IMM (0<<2)
+#define FBC_CTL_IDLE_FULL (1<<2)
+#define FBC_CTL_IDLE_LINE (2<<2)
+#define FBC_CTL_IDLE_DEBUG (3<<2)
+#define FBC_CTL_CPU_FENCE (1<<1)
+#define FBC_CTL_PLANEA (0<<0)
+#define FBC_CTL_PLANEB (1<<0)
+#define FBC_FENCE_OFF 0x0321b
+
+#define FBC_LL_SIZE (1536)
+#define FBC_LL_PAD (32)
+
+/* Interrupt bits:
+ */
+#define USER_INT_FLAG (1<<1)
+#define VSYNC_PIPEB_FLAG (1<<5)
+#define VSYNC_PIPEA_FLAG (1<<7)
+#define HWB_OOM_FLAG (1<<13) /* binner out of memory */
+
#define I915REG_HWSTAM 0x02098
#define I915REG_INT_IDENTITY_R 0x020a4
#define I915REG_INT_MASK_R 0x020a8
@@ -251,6 +413,10 @@
#define NOPID 0x2094
#define LP_RING 0x2030
#define HP_RING 0x2040
+/* The binner has its own ring buffer:
+ */
+#define HWB_RING 0x2400
+
#define RING_TAIL 0x00
#define TAIL_ADDR 0x001FFFF8
#define RING_HEAD 0x04
@@ -269,11 +435,105 @@
#define RING_VALID 0x00000001
#define RING_INVALID 0x00000000
+/* Instruction parser error reg:
+ */
+#define IPEIR 0x2088
+
+/* Scratch pad debug 0 reg:
+ */
+#define SCPD0 0x209c
+
+/* Error status reg:
+ */
+#define ESR 0x20b8
+
+/* Secondary DMA fetch address debug reg:
+ */
+#define DMA_FADD_S 0x20d4
+
+/* Cache mode 0 reg.
+ * - Manipulating render cache behaviour is central
+ * to the concept of zone rendering, tuning this reg can help avoid
+ * unnecessary render cache reads and even writes (for z/stencil)
+ * at beginning and end of scene.
+ *
+ * - To change a bit, write to this reg with a mask bit set and the
+ * bit of interest either set or cleared. EG: (BIT<<16) | BIT to set.
+ */
+#define Cache_Mode_0 0x2120
+#define CM0_MASK_SHIFT 16
+#define CM0_IZ_OPT_DISABLE (1<<6)
+#define CM0_ZR_OPT_DISABLE (1<<5)
+#define CM0_DEPTH_EVICT_DISABLE (1<<4)
+#define CM0_COLOR_EVICT_DISABLE (1<<3)
+#define CM0_DEPTH_WRITE_DISABLE (1<<1)
+#define CM0_RC_OP_FLUSH_DISABLE (1<<0)
+
+
+/* Graphics flush control. A CPU write flushes the GWB of all writes.
+ * The data is discarded.
+ */
+#define GFX_FLSH_CNTL 0x2170
+
+/* Binner control. Defines the location of the bin pointer list:
+ */
+#define BINCTL 0x2420
+#define BC_MASK (1 << 9)
+
+/* Binned scene info.
+ */
+#define BINSCENE 0x2428
+#define BS_OP_LOAD (1 << 8)
+#define BS_MASK (1 << 22)
+
+/* Bin command parser debug reg:
+ */
+#define BCPD 0x2480
+
+/* Bin memory control debug reg:
+ */
+#define BMCD 0x2484
+
+/* Bin data cache debug reg:
+ */
+#define BDCD 0x2488
+
+/* Binner pointer cache debug reg:
+ */
+#define BPCD 0x248c
+
+/* Binner scratch pad debug reg:
+ */
+#define BINSKPD 0x24f0
+
+/* HWB scratch pad debug reg:
+ */
+#define HWBSKPD 0x24f4
+
+/* Binner memory pool reg:
+ */
+#define BMP_BUFFER 0x2430
+#define BMP_PAGE_SIZE_4K (0 << 10)
+#define BMP_BUFFER_SIZE_SHIFT 1
+#define BMP_ENABLE (1 << 0)
+
+/* Get/put memory from the binner memory pool:
+ */
+#define BMP_GET 0x2438
+#define BMP_PUT 0x2440
+#define BMP_OFFSET_SHIFT 5
+
+/* 3D state packets:
+ */
+#define GFX_OP_RASTER_RULES ((0x3<<29)|(0x7<<24))
+
#define GFX_OP_SCISSOR ((0x3<<29)|(0x1c<<24)|(0x10<<19))
#define SC_UPDATE_SCISSOR (0x1<<1)
#define SC_ENABLE_MASK (0x1<<0)
#define SC_ENABLE (0x1<<0)
+#define GFX_OP_LOAD_INDIRECT ((0x3<<29)|(0x1d<<24)|(0x7<<16))
+
#define GFX_OP_SCISSOR_INFO ((0x3<<29)|(0x1d<<24)|(0x81<<16)|(0x1))
#define SCI_YMIN_MASK (0xffff<<16)
#define SCI_XMIN_MASK (0xffff<<0)
@@ -290,6 +550,7 @@
#define GFX_OP_DRAWRECT_INFO_I965 ((0x7900<<16)|0x2)
+#define SRC_COPY_BLT_CMD ((2<<29)|(0x43<<22)|4)
#define XY_SRC_COPY_BLT_CMD ((2<<29)|(0x53<<22)|6)
#define XY_SRC_COPY_BLT_WRITE_ALPHA (1<<21)
#define XY_SRC_COPY_BLT_WRITE_RGB (1<<20)
@@ -301,6 +562,7 @@
#define MI_BATCH_NON_SECURE_I965 (1<<8)
#define MI_WAIT_FOR_EVENT ((0x3<<23))
+#define MI_WAIT_FOR_PLANE_B_FLIP (1<<6)
#define MI_WAIT_FOR_PLANE_A_FLIP (1<<2)
#define MI_WAIT_FOR_PLANE_A_SCANLINES (1<<1)
@@ -308,9 +570,535 @@
#define CMD_OP_DISPLAYBUFFER_INFO ((0x0<<29)|(0x14<<23)|2)
#define ASYNC_FLIP (1<<22)
+#define DISPLAY_PLANE_A (0<<20)
+#define DISPLAY_PLANE_B (1<<20)
+
+/* Display regs */
+#define DSPACNTR 0x70180
+#define DSPBCNTR 0x71180
+#define DISPPLANE_SEL_PIPE_MASK (1<<24)
+
+/* Define the region of interest for the binner:
+ */
+#define CMD_OP_BIN_CONTROL ((0x3<<29)|(0x1d<<24)|(0x84<<16)|4)
#define CMD_OP_DESTBUFFER_INFO ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1)
-#define READ_BREADCRUMB(dev_priv) (((u32 *)(dev_priv->hw_status_page))[5])
+#define CMD_MI_FLUSH (0x04 << 23)
+#define MI_NO_WRITE_FLUSH (1 << 2)
+#define MI_READ_FLUSH (1 << 0)
+#define MI_EXE_FLUSH (1 << 1)
+#define MI_END_SCENE (1 << 4) /* flush binner and incr scene count */
+#define MI_SCENE_COUNT (1 << 3) /* just increment scene count */
+
+#define BREADCRUMB_BITS 31
+#define BREADCRUMB_MASK ((1U << BREADCRUMB_BITS) - 1)
+
+#define READ_BREADCRUMB(dev_priv) (((volatile u32*)(dev_priv->hw_status_page))[5])
+#define READ_HWSP(dev_priv, reg) (((volatile u32*)(dev_priv->hw_status_page))[reg])
+
+#define BLC_PWM_CTL 0x61254
+#define BACKLIGHT_MODULATION_FREQ_SHIFT (17)
+
+#define BLC_PWM_CTL2 0x61250
+/**
+ * This is the most significant 15 bits of the number of backlight cycles in a
+ * complete cycle of the modulated backlight control.
+ *
+ * The actual value is this field multiplied by two.
+ */
+#define BACKLIGHT_MODULATION_FREQ_MASK (0x7fff << 17)
+#define BLM_LEGACY_MODE (1 << 16)
+/**
+ * This is the number of cycles out of the backlight modulation cycle for which
+ * the backlight is on.
+ *
+ * This field must be no greater than the number of cycles in the complete
+ * backlight modulation cycle.
+ */
+#define BACKLIGHT_DUTY_CYCLE_SHIFT (0)
+#define BACKLIGHT_DUTY_CYCLE_MASK (0xffff)
+
+#define I915_GCFGC 0xf0
+#define I915_LOW_FREQUENCY_ENABLE (1 << 7)
+#define I915_DISPLAY_CLOCK_190_200_MHZ (0 << 4)
+#define I915_DISPLAY_CLOCK_333_MHZ (4 << 4)
+#define I915_DISPLAY_CLOCK_MASK (7 << 4)
+
+#define I855_HPLLCC 0xc0
+#define I855_CLOCK_CONTROL_MASK (3 << 0)
+#define I855_CLOCK_133_200 (0 << 0)
+#define I855_CLOCK_100_200 (1 << 0)
+#define I855_CLOCK_100_133 (2 << 0)
+#define I855_CLOCK_166_250 (3 << 0)
+
+/* p317, 319
+ */
+#define VCLK2_VCO_M 0x6008 /* treat as 16 bit? (includes msbs) */
+#define VCLK2_VCO_N 0x600a
+#define VCLK2_VCO_DIV_SEL 0x6012
+
+#define VCLK_DIVISOR_VGA0 0x6000
+#define VCLK_DIVISOR_VGA1 0x6004
+#define VCLK_POST_DIV 0x6010
+/** Selects a post divisor of 4 instead of 2. */
+# define VGA1_PD_P2_DIV_4 (1 << 15)
+/** Overrides the p2 post divisor field */
+# define VGA1_PD_P1_DIV_2 (1 << 13)
+# define VGA1_PD_P1_SHIFT 8
+/** P1 value is 2 greater than this field */
+# define VGA1_PD_P1_MASK (0x1f << 8)
+/** Selects a post divisor of 4 instead of 2. */
+# define VGA0_PD_P2_DIV_4 (1 << 7)
+/** Overrides the p2 post divisor field */
+# define VGA0_PD_P1_DIV_2 (1 << 5)
+# define VGA0_PD_P1_SHIFT 0
+/** P1 value is 2 greater than this field */
+# define VGA0_PD_P1_MASK (0x1f << 0)
+
+/* I830 CRTC registers */
+#define HTOTAL_A 0x60000
+#define HBLANK_A 0x60004
+#define HSYNC_A 0x60008
+#define VTOTAL_A 0x6000c
+#define VBLANK_A 0x60010
+#define VSYNC_A 0x60014
+#define PIPEASRC 0x6001c
+#define BCLRPAT_A 0x60020
+#define VSYNCSHIFT_A 0x60028
+
+#define HTOTAL_B 0x61000
+#define HBLANK_B 0x61004
+#define HSYNC_B 0x61008
+#define VTOTAL_B 0x6100c
+#define VBLANK_B 0x61010
+#define VSYNC_B 0x61014
+#define PIPEBSRC 0x6101c
+#define BCLRPAT_B 0x61020
+#define VSYNCSHIFT_B 0x61028
+
+#define PP_STATUS 0x61200
+# define PP_ON (1 << 31)
+/**
+ * Indicates that all dependencies of the panel are on:
+ *
+ * - PLL enabled
+ * - pipe enabled
+ * - LVDS/DVOB/DVOC on
+ */
+# define PP_READY (1 << 30)
+# define PP_SEQUENCE_NONE (0 << 28)
+# define PP_SEQUENCE_ON (1 << 28)
+# define PP_SEQUENCE_OFF (2 << 28)
+# define PP_SEQUENCE_MASK 0x30000000
+#define PP_CONTROL 0x61204
+# define POWER_TARGET_ON (1 << 0)
+
+#define LVDSPP_ON 0x61208
+#define LVDSPP_OFF 0x6120c
+#define PP_CYCLE 0x61210
+
+#define PFIT_CONTROL 0x61230
+# define PFIT_ENABLE (1 << 31)
+# define PFIT_PIPE_MASK (3 << 29)
+# define PFIT_PIPE_SHIFT 29
+# define VERT_INTERP_DISABLE (0 << 10)
+# define VERT_INTERP_BILINEAR (1 << 10)
+# define VERT_INTERP_MASK (3 << 10)
+# define VERT_AUTO_SCALE (1 << 9)
+# define HORIZ_INTERP_DISABLE (0 << 6)
+# define HORIZ_INTERP_BILINEAR (1 << 6)
+# define HORIZ_INTERP_MASK (3 << 6)
+# define HORIZ_AUTO_SCALE (1 << 5)
+# define PANEL_8TO6_DITHER_ENABLE (1 << 3)
+
+#define PFIT_PGM_RATIOS 0x61234
+# define PFIT_VERT_SCALE_MASK 0xfff00000
+# define PFIT_HORIZ_SCALE_MASK 0x0000fff0
+
+#define PFIT_AUTO_RATIOS 0x61238
+
+
+#define DPLL_A 0x06014
+#define DPLL_B 0x06018
+# define DPLL_VCO_ENABLE (1 << 31)
+# define DPLL_DVO_HIGH_SPEED (1 << 30)
+# define DPLL_SYNCLOCK_ENABLE (1 << 29)
+# define DPLL_VGA_MODE_DIS (1 << 28)
+# define DPLLB_MODE_DAC_SERIAL (1 << 26) /* i915 */
+# define DPLLB_MODE_LVDS (2 << 26) /* i915 */
+# define DPLL_MODE_MASK (3 << 26)
+# define DPLL_DAC_SERIAL_P2_CLOCK_DIV_10 (0 << 24) /* i915 */
+# define DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 (1 << 24) /* i915 */
+# define DPLLB_LVDS_P2_CLOCK_DIV_14 (0 << 24) /* i915 */
+# define DPLLB_LVDS_P2_CLOCK_DIV_7 (1 << 24) /* i915 */
+# define DPLL_P2_CLOCK_DIV_MASK 0x03000000 /* i915 */
+# define DPLL_FPA01_P1_POST_DIV_MASK 0x00ff0000 /* i915 */
+/**
+ * The i830 generation, in DAC/serial mode, defines p1 as two plus this
+ * bitfield, or just 2 if PLL_P1_DIVIDE_BY_TWO is set.
+ */
+# define DPLL_FPA01_P1_POST_DIV_MASK_I830 0x001f0000
+/**
+ * The i830 generation, in LVDS mode, defines P1 as the bit number set within
+ * this field (only one bit may be set).
+ */
+# define DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS 0x003f0000
+# define DPLL_FPA01_P1_POST_DIV_SHIFT 16
+# define PLL_P2_DIVIDE_BY_4 (1 << 23) /* i830, required in DVO non-gang */
+# define PLL_P1_DIVIDE_BY_TWO (1 << 21) /* i830 */
+# define PLL_REF_INPUT_DREFCLK (0 << 13)
+# define PLL_REF_INPUT_TVCLKINA (1 << 13) /* i830 */
+# define PLL_REF_INPUT_TVCLKINBC (2 << 13) /* SDVO TVCLKIN */
+# define PLLB_REF_INPUT_SPREADSPECTRUMIN (3 << 13)
+# define PLL_REF_INPUT_MASK (3 << 13)
+# define PLL_LOAD_PULSE_PHASE_SHIFT 9
+/*
+ * Parallel to Serial Load Pulse phase selection.
+ * Selects the phase for the 10X DPLL clock for the PCIe
+ * digital display port. The range is 4 to 13; 10 or more
+ * is just a flip delay. The default is 6
+ */
+# define PLL_LOAD_PULSE_PHASE_MASK (0xf << PLL_LOAD_PULSE_PHASE_SHIFT)
+# define DISPLAY_RATE_SELECT_FPA1 (1 << 8)
+
+/**
+ * SDVO multiplier for 945G/GM. Not used on 965.
+ *
+ * \sa DPLL_MD_UDI_MULTIPLIER_MASK
+ */
+# define SDVO_MULTIPLIER_MASK 0x000000ff
+# define SDVO_MULTIPLIER_SHIFT_HIRES 4
+# define SDVO_MULTIPLIER_SHIFT_VGA 0
+
+/** @defgroup DPLL_MD
+ * @{
+ */
+/** Pipe A SDVO/UDI clock multiplier/divider register for G965. */
+#define DPLL_A_MD 0x0601c
+/** Pipe B SDVO/UDI clock multiplier/divider register for G965. */
+#define DPLL_B_MD 0x06020
+/**
+ * UDI pixel divider, controlling how many pixels are stuffed into a packet.
+ *
+ * Value is pixels minus 1. Must be set to 1 pixel for SDVO.
+ */
+# define DPLL_MD_UDI_DIVIDER_MASK 0x3f000000
+# define DPLL_MD_UDI_DIVIDER_SHIFT 24
+/** UDI pixel divider for VGA, same as DPLL_MD_UDI_DIVIDER_MASK. */
+# define DPLL_MD_VGA_UDI_DIVIDER_MASK 0x003f0000
+# define DPLL_MD_VGA_UDI_DIVIDER_SHIFT 16
+/**
+ * SDVO/UDI pixel multiplier.
+ *
+ * SDVO requires that the bus clock rate be between 1 and 2 Ghz, and the bus
+ * clock rate is 10 times the DPLL clock. At low resolution/refresh rate
+ * modes, the bus rate would be below the limits, so SDVO allows for stuffing
+ * dummy bytes in the datastream at an increased clock rate, with both sides of
+ * the link knowing how many bytes are fill.
+ *
+ * So, for a mode with a dotclock of 65Mhz, we would want to double the clock
+ * rate to 130Mhz to get a bus rate of 1.30Ghz. The DPLL clock rate would be
+ * set to 130Mhz, and the SDVO multiplier set to 2x in this register and
+ * through an SDVO command.
+ *
+ * This register field has values of multiplication factor minus 1, with
+ * a maximum multiplier of 5 for SDVO.
+ */
+# define DPLL_MD_UDI_MULTIPLIER_MASK 0x00003f00
+# define DPLL_MD_UDI_MULTIPLIER_SHIFT 8
+/** SDVO/UDI pixel multiplier for VGA, same as DPLL_MD_UDI_MULTIPLIER_MASK.
+ * This best be set to the default value (3) or the CRT won't work. No,
+ * I don't entirely understand what this does...
+ */
+# define DPLL_MD_VGA_UDI_MULTIPLIER_MASK 0x0000003f
+# define DPLL_MD_VGA_UDI_MULTIPLIER_SHIFT 0
+/** @} */
+
+#define DPLL_TEST 0x606c
+# define DPLLB_TEST_SDVO_DIV_1 (0 << 22)
+# define DPLLB_TEST_SDVO_DIV_2 (1 << 22)
+# define DPLLB_TEST_SDVO_DIV_4 (2 << 22)
+# define DPLLB_TEST_SDVO_DIV_MASK (3 << 22)
+# define DPLLB_TEST_N_BYPASS (1 << 19)
+# define DPLLB_TEST_M_BYPASS (1 << 18)
+# define DPLLB_INPUT_BUFFER_ENABLE (1 << 16)
+# define DPLLA_TEST_N_BYPASS (1 << 3)
+# define DPLLA_TEST_M_BYPASS (1 << 2)
+# define DPLLA_INPUT_BUFFER_ENABLE (1 << 0)
+
+#define ADPA 0x61100
+#define ADPA_DAC_ENABLE (1<<31)
+#define ADPA_DAC_DISABLE 0
+#define ADPA_PIPE_SELECT_MASK (1<<30)
+#define ADPA_PIPE_A_SELECT 0
+#define ADPA_PIPE_B_SELECT (1<<30)
+#define ADPA_USE_VGA_HVPOLARITY (1<<15)
+#define ADPA_SETS_HVPOLARITY 0
+#define ADPA_VSYNC_CNTL_DISABLE (1<<11)
+#define ADPA_VSYNC_CNTL_ENABLE 0
+#define ADPA_HSYNC_CNTL_DISABLE (1<<10)
+#define ADPA_HSYNC_CNTL_ENABLE 0
+#define ADPA_VSYNC_ACTIVE_HIGH (1<<4)
+#define ADPA_VSYNC_ACTIVE_LOW 0
+#define ADPA_HSYNC_ACTIVE_HIGH (1<<3)
+#define ADPA_HSYNC_ACTIVE_LOW 0
+
+#define FPA0 0x06040
+#define FPA1 0x06044
+#define FPB0 0x06048
+#define FPB1 0x0604c
+# define FP_N_DIV_MASK 0x003f0000
+# define FP_N_DIV_SHIFT 16
+# define FP_M1_DIV_MASK 0x00003f00
+# define FP_M1_DIV_SHIFT 8
+# define FP_M2_DIV_MASK 0x0000003f
+# define FP_M2_DIV_SHIFT 0
+
+
+#define PORT_HOTPLUG_EN 0x61110
+# define SDVOB_HOTPLUG_INT_EN (1 << 26)
+# define SDVOC_HOTPLUG_INT_EN (1 << 25)
+# define TV_HOTPLUG_INT_EN (1 << 18)
+# define CRT_HOTPLUG_INT_EN (1 << 9)
+# define CRT_HOTPLUG_FORCE_DETECT (1 << 3)
+
+#define PORT_HOTPLUG_STAT 0x61114
+# define CRT_HOTPLUG_INT_STATUS (1 << 11)
+# define TV_HOTPLUG_INT_STATUS (1 << 10)
+# define CRT_HOTPLUG_MONITOR_MASK (3 << 8)
+# define CRT_HOTPLUG_MONITOR_COLOR (3 << 8)
+# define CRT_HOTPLUG_MONITOR_MONO (2 << 8)
+# define CRT_HOTPLUG_MONITOR_NONE (0 << 8)
+# define SDVOC_HOTPLUG_INT_STATUS (1 << 7)
+# define SDVOB_HOTPLUG_INT_STATUS (1 << 6)
+
+#define SDVOB 0x61140
+#define SDVOC 0x61160
+#define SDVO_ENABLE (1 << 31)
+#define SDVO_PIPE_B_SELECT (1 << 30)
+#define SDVO_STALL_SELECT (1 << 29)
+#define SDVO_INTERRUPT_ENABLE (1 << 26)
+/**
+ * 915G/GM SDVO pixel multiplier.
+ *
+ * Programmed value is multiplier - 1, up to 5x.
+ *
+ * \sa DPLL_MD_UDI_MULTIPLIER_MASK
+ */
+#define SDVO_PORT_MULTIPLY_MASK (7 << 23)
+#define SDVO_PORT_MULTIPLY_SHIFT 23
+#define SDVO_PHASE_SELECT_MASK (15 << 19)
+#define SDVO_PHASE_SELECT_DEFAULT (6 << 19)
+#define SDVO_CLOCK_OUTPUT_INVERT (1 << 18)
+#define SDVOC_GANG_MODE (1 << 16)
+#define SDVO_BORDER_ENABLE (1 << 7)
+#define SDVOB_PCIE_CONCURRENCY (1 << 3)
+#define SDVO_DETECTED (1 << 2)
+/* Bits to be preserved when writing */
+#define SDVOB_PRESERVE_MASK ((1 << 17) | (1 << 16) | (1 << 14))
+#define SDVOC_PRESERVE_MASK (1 << 17)
+
+/** @defgroup LVDS
+ * @{
+ */
+/**
+ * This register controls the LVDS output enable, pipe selection, and data
+ * format selection.
+ *
+ * All of the clock/data pairs are force powered down by power sequencing.
+ */
+#define LVDS 0x61180
+/**
+ * Enables the LVDS port. This bit must be set before DPLLs are enabled, as
+ * the DPLL semantics change when the LVDS is assigned to that pipe.
+ */
+# define LVDS_PORT_EN (1 << 31)
+/** Selects pipe B for LVDS data. Must be set on pre-965. */
+# define LVDS_PIPEB_SELECT (1 << 30)
+
+/**
+ * Enables the A0-A2 data pairs and CLKA, containing 18 bits of color data per
+ * pixel.
+ */
+# define LVDS_A0A2_CLKA_POWER_MASK (3 << 8)
+# define LVDS_A0A2_CLKA_POWER_DOWN (0 << 8)
+# define LVDS_A0A2_CLKA_POWER_UP (3 << 8)
+/**
+ * Controls the A3 data pair, which contains the additional LSBs for 24 bit
+ * mode. Only enabled if LVDS_A0A2_CLKA_POWER_UP also indicates it should be
+ * on.
+ */
+# define LVDS_A3_POWER_MASK (3 << 6)
+# define LVDS_A3_POWER_DOWN (0 << 6)
+# define LVDS_A3_POWER_UP (3 << 6)
+/**
+ * Controls the CLKB pair. This should only be set when LVDS_B0B3_POWER_UP
+ * is set.
+ */
+# define LVDS_CLKB_POWER_MASK (3 << 4)
+# define LVDS_CLKB_POWER_DOWN (0 << 4)
+# define LVDS_CLKB_POWER_UP (3 << 4)
+
+/**
+ * Controls the B0-B3 data pairs. This must be set to match the DPLL p2
+ * setting for whether we are in dual-channel mode. The B3 pair will
+ * additionally only be powered up when LVDS_A3_POWER_UP is set.
+ */
+# define LVDS_B0B3_POWER_MASK (3 << 2)
+# define LVDS_B0B3_POWER_DOWN (0 << 2)
+# define LVDS_B0B3_POWER_UP (3 << 2)
+
+#define PIPEACONF 0x70008
+#define PIPEACONF_ENABLE (1<<31)
+#define PIPEACONF_DISABLE 0
+#define PIPEACONF_DOUBLE_WIDE (1<<30)
+#define I965_PIPECONF_ACTIVE (1<<30)
+#define PIPEACONF_SINGLE_WIDE 0
+#define PIPEACONF_PIPE_UNLOCKED 0
+#define PIPEACONF_PIPE_LOCKED (1<<25)
+#define PIPEACONF_PALETTE 0
+#define PIPEACONF_GAMMA (1<<24)
+#define PIPECONF_FORCE_BORDER (1<<25)
+#define PIPECONF_PROGRESSIVE (0 << 21)
+#define PIPECONF_INTERLACE_W_FIELD_INDICATION (6 << 21)
+#define PIPECONF_INTERLACE_FIELD_0_ONLY (7 << 21)
+
+#define PIPEBCONF 0x71008
+#define PIPEBCONF_ENABLE (1<<31)
+#define PIPEBCONF_DISABLE 0
+#define PIPEBCONF_DOUBLE_WIDE (1<<30)
+#define PIPEBCONF_DISABLE 0
+#define PIPEBCONF_GAMMA (1<<24)
+#define PIPEBCONF_PALETTE 0
+
+#define PIPEBGCMAXRED 0x71010
+#define PIPEBGCMAXGREEN 0x71014
+#define PIPEBGCMAXBLUE 0x71018
+#define PIPEBSTAT 0x71024
+#define PIPEBFRAMEHIGH 0x71040
+#define PIPEBFRAMEPIXEL 0x71044
+
+#define DSPACNTR 0x70180
+#define DSPBCNTR 0x71180
+#define DISPLAY_PLANE_ENABLE (1<<31)
+#define DISPLAY_PLANE_DISABLE 0
+#define DISPPLANE_GAMMA_ENABLE (1<<30)
+#define DISPPLANE_GAMMA_DISABLE 0
+#define DISPPLANE_PIXFORMAT_MASK (0xf<<26)
+#define DISPPLANE_8BPP (0x2<<26)
+#define DISPPLANE_15_16BPP (0x4<<26)
+#define DISPPLANE_16BPP (0x5<<26)
+#define DISPPLANE_32BPP_NO_ALPHA (0x6<<26)
+#define DISPPLANE_32BPP (0x7<<26)
+#define DISPPLANE_STEREO_ENABLE (1<<25)
+#define DISPPLANE_STEREO_DISABLE 0
+#define DISPPLANE_SEL_PIPE_MASK (1<<24)
+#define DISPPLANE_SEL_PIPE_A 0
+#define DISPPLANE_SEL_PIPE_B (1<<24)
+#define DISPPLANE_SRC_KEY_ENABLE (1<<22)
+#define DISPPLANE_SRC_KEY_DISABLE 0
+#define DISPPLANE_LINE_DOUBLE (1<<20)
+#define DISPPLANE_NO_LINE_DOUBLE 0
+#define DISPPLANE_STEREO_POLARITY_FIRST 0
+#define DISPPLANE_STEREO_POLARITY_SECOND (1<<18)
+/* plane B only */
+#define DISPPLANE_ALPHA_TRANS_ENABLE (1<<15)
+#define DISPPLANE_ALPHA_TRANS_DISABLE 0
+#define DISPPLANE_SPRITE_ABOVE_DISPLAYA 0
+#define DISPPLANE_SPRITE_ABOVE_OVERLAY (1)
+
+#define DSPABASE 0x70184
+#define DSPASTRIDE 0x70188
+
+#define DSPBBASE 0x71184
+#define DSPBADDR DSPBBASE
+#define DSPBSTRIDE 0x71188
+
+#define DSPAKEYVAL 0x70194
+#define DSPAKEYMASK 0x70198
+
+#define DSPAPOS 0x7018C /* reserved */
+#define DSPASIZE 0x70190
+#define DSPBPOS 0x7118C
+#define DSPBSIZE 0x71190
+
+#define DSPASURF 0x7019C
+#define DSPATILEOFF 0x701A4
+
+#define DSPBSURF 0x7119C
+#define DSPBTILEOFF 0x711A4
+
+#define VGACNTRL 0x71400
+# define VGA_DISP_DISABLE (1 << 31)
+# define VGA_2X_MODE (1 << 30)
+# define VGA_PIPE_B_SELECT (1 << 29)
+
+/*
+ * Some BIOS scratch area registers. The 845 (and 830?) store the amount
+ * of video memory available to the BIOS in SWF1.
+ */
+
+#define SWF0 0x71410
+
+/*
+ * 855 scratch registers.
+ */
+#define SWF10 0x70410
+
+#define SWF30 0x72414
+
+/*
+ * Overlay registers. These are overlay registers accessed via MMIO.
+ * Those loaded via the overlay register page are defined in i830_video.c.
+ */
+#define OVADD 0x30000
+
+#define DOVSTA 0x30008
+#define OC_BUF (0x3<<20)
+
+#define OGAMC5 0x30010
+#define OGAMC4 0x30014
+#define OGAMC3 0x30018
+#define OGAMC2 0x3001c
+#define OGAMC1 0x30020
+#define OGAMC0 0x30024
+/*
+ * Palette registers
+ */
+#define PALETTE_A 0x0a000
+#define PALETTE_B 0x0a800
+
+#define IS_I830(dev) ((dev)->pci_device == 0x3577)
+#define IS_845G(dev) ((dev)->pci_device == 0x2562)
+#define IS_I85X(dev) ((dev)->pci_device == 0x3582)
+#define IS_I855(dev) ((dev)->pci_device == 0x3582)
+#define IS_I865G(dev) ((dev)->pci_device == 0x2572)
+
+#define IS_I915G(dev) (dev->pci_device == 0x2582)/* || dev->pci_device == PCI_DEVICE_ID_INTELPCI_CHIP_E7221_G)*/
+#define IS_I915GM(dev) ((dev)->pci_device == 0x2592)
+#define IS_I945G(dev) ((dev)->pci_device == 0x2772)
+#define IS_I945GM(dev) ((dev)->pci_device == 0x27A2)
+
+#define IS_I965G(dev) ((dev)->pci_device == 0x2972 || \
+ (dev)->pci_device == 0x2982 || \
+ (dev)->pci_device == 0x2992 || \
+ (dev)->pci_device == 0x29A2 || \
+ (dev)->pci_device == 0x2A02 || \
+ (dev)->pci_device == 0x2A12)
+
+#define IS_I965GM(dev) ((dev)->pci_device == 0x2A02)
+
+#define IS_G33(dev) ((dev)->pci_device == 0x29C2 || \
+ (dev)->pci_device == 0x29B2 || \
+ (dev)->pci_device == 0x29D2)
+
+#define IS_I9XX(dev) (IS_I915G(dev) || IS_I915GM(dev) || IS_I945G(dev) || \
+ IS_I945GM(dev) || IS_I965G(dev) || IS_G33(dev))
+
+#define IS_MOBILE(dev) (IS_I830(dev) || IS_I85X(dev) || IS_I915GM(dev) || \
+ IS_I945GM(dev) || IS_I965GM(dev))
+
+#define PRIMARY_RINGBUFFER_SIZE (128*1024)
#endif