drm: Add via unichrome support

Add DRM device driver for VIA Unichrome chipsets

From: Unichrome Project http://unichrome.sf.net, Erdi Chen, Thomas Hellstrom    Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 243 insertions, 0 deletions

diff --git a/drivers/char/drm/via_drm.h b/drivers/char/drm/via_drm.h
new file mode 100644
index 000000000000..4588c9bd1816
--- /dev/null
+++ b/drivers/char/drm/via_drm.h
@@ -0,0 +1,243 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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.
+ */
+#ifndef _VIA_DRM_H_
+#define _VIA_DRM_H_
+
+/* WARNING: These defines must be the same as what the Xserver uses.
+ * if you change them, you must change the defines in the Xserver.
+ */
+
+#ifndef _VIA_DEFINES_
+#define _VIA_DEFINES_
+
+#ifndef __KERNEL__
+#include "via_drmclient.h"
+#endif
+
+#define VIA_NR_SAREA_CLIPRECTS          8
+#define VIA_NR_XVMC_PORTS               10
+#define VIA_NR_XVMC_LOCKS               5
+#define VIA_MAX_CACHELINE_SIZE          64
+#define XVMCLOCKPTR(saPriv,lockNo)                                      \
+        ((volatile drm_hw_lock_t *)(((((unsigned long) (saPriv)->XvMCLockArea) + \
+                                      (VIA_MAX_CACHELINE_SIZE - 1)) &   \
+                                     ~(VIA_MAX_CACHELINE_SIZE - 1)) +   \
+                                    VIA_MAX_CACHELINE_SIZE*(lockNo)))
+
+/* Each region is a minimum of 64k, and there are at most 64 of them.
+ */
+#define VIA_NR_TEX_REGIONS 64
+#define VIA_LOG_MIN_TEX_REGION_SIZE 16
+#endif
+
+#define VIA_UPLOAD_TEX0IMAGE  0x1       /* handled clientside */
+#define VIA_UPLOAD_TEX1IMAGE  0x2       /* handled clientside */
+#define VIA_UPLOAD_CTX        0x4
+#define VIA_UPLOAD_BUFFERS    0x8
+#define VIA_UPLOAD_TEX0       0x10
+#define VIA_UPLOAD_TEX1       0x20
+#define VIA_UPLOAD_CLIPRECTS  0x40
+#define VIA_UPLOAD_ALL        0xff
+
+/* VIA specific ioctls */
+#define DRM_VIA_ALLOCMEM        0x00
+#define DRM_VIA_FREEMEM         0x01
+#define DRM_VIA_AGP_INIT        0x02
+#define DRM_VIA_FB_INIT         0x03
+#define DRM_VIA_MAP_INIT        0x04
+#define DRM_VIA_DEC_FUTEX       0x05
+#define NOT_USED
+#define DRM_VIA_DMA_INIT        0x07
+#define DRM_VIA_CMDBUFFER       0x08
+#define DRM_VIA_FLUSH           0x09
+#define DRM_VIA_PCICMD          0x0a
+#define DRM_VIA_CMDBUF_SIZE     0x0b
+#define NOT_USED
+#define DRM_VIA_WAIT_IRQ        0x0d
+
+#define DRM_IOCTL_VIA_ALLOCMEM    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_ALLOCMEM, drm_via_mem_t)
+#define DRM_IOCTL_VIA_FREEMEM     DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_FREEMEM, drm_via_mem_t)
+#define DRM_IOCTL_VIA_AGP_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_AGP_INIT, drm_via_agp_t)
+#define DRM_IOCTL_VIA_FB_INIT     DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_FB_INIT, drm_via_fb_t)
+#define DRM_IOCTL_VIA_MAP_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_MAP_INIT, drm_via_init_t)
+#define DRM_IOCTL_VIA_DEC_FUTEX   DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_DEC_FUTEX, drm_via_futex_t)
+#define DRM_IOCTL_VIA_DMA_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_DMA_INIT, drm_via_dma_init_t)
+#define DRM_IOCTL_VIA_CMDBUFFER   DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_CMDBUFFER, drm_via_cmdbuffer_t)
+#define DRM_IOCTL_VIA_FLUSH       DRM_IO(  DRM_COMMAND_BASE + DRM_VIA_FLUSH)
+#define DRM_IOCTL_VIA_PCICMD      DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_PCICMD, drm_via_cmdbuffer_t)
+#define DRM_IOCTL_VIA_CMDBUF_SIZE DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_CMDBUF_SIZE, \
+                                            drm_via_cmdbuf_size_t)
+#define DRM_IOCTL_VIA_WAIT_IRQ    DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_WAIT_IRQ, drm_via_irqwait_t)
+
+/* Indices into buf.Setup where various bits of state are mirrored per
+ * context and per buffer.  These can be fired at the card as a unit,
+ * or in a piecewise fashion as required.
+ */
+
+#define VIA_TEX_SETUP_SIZE 8
+
+/* Flags for clear ioctl
+ */
+#define VIA_FRONT   0x1
+#define VIA_BACK    0x2
+#define VIA_DEPTH   0x4
+#define VIA_STENCIL 0x8
+#define VIDEO 0
+#define AGP 1
+typedef struct {
+        uint32_t offset;
+        uint32_t size;
+} drm_via_agp_t;
+
+typedef struct {
+        uint32_t offset;
+        uint32_t size;
+} drm_via_fb_t;
+
+typedef struct {
+        uint32_t context;
+        uint32_t type;
+        uint32_t size;
+        unsigned long index;
+        unsigned long offset;
+} drm_via_mem_t;
+
+typedef struct _drm_via_init {
+        enum {
+                VIA_INIT_MAP = 0x01,
+                VIA_CLEANUP_MAP = 0x02
+        } func;
+
+        unsigned long sarea_priv_offset;
+        unsigned long fb_offset;
+        unsigned long mmio_offset;
+        unsigned long agpAddr;
+} drm_via_init_t;
+
+typedef struct _drm_via_futex {
+        enum {
+                VIA_FUTEX_WAIT = 0x00,
+                VIA_FUTEX_WAKE = 0X01
+        } func;
+        uint32_t ms;
+        uint32_t lock;
+        uint32_t val;
+} drm_via_futex_t;
+
+typedef struct _drm_via_dma_init {
+        enum {
+                VIA_INIT_DMA = 0x01,
+                VIA_CLEANUP_DMA = 0x02,
+                VIA_DMA_INITIALIZED = 0x03
+        } func;
+
+        unsigned long offset;
+        unsigned long size;
+        unsigned long reg_pause_addr;
+} drm_via_dma_init_t;
+
+typedef struct _drm_via_cmdbuffer {
+        char *buf;
+        unsigned long size;
+} drm_via_cmdbuffer_t;
+
+/* Warning: If you change the SAREA structure you must change the Xserver
+ * structure as well */
+
+typedef struct _drm_via_tex_region {
+        unsigned char next, prev;       /* indices to form a circular LRU  */
+        unsigned char inUse;    /* owned by a client, or free? */
+        int age;                /* tracked by clients to update local LRU's */
+} drm_via_tex_region_t;
+
+typedef struct _drm_via_sarea {
+        unsigned int dirty;
+        unsigned int nbox;
+        drm_clip_rect_t boxes[VIA_NR_SAREA_CLIPRECTS];
+        drm_via_tex_region_t texList[VIA_NR_TEX_REGIONS + 1];
+        int texAge;             /* last time texture was uploaded */
+        int ctxOwner;           /* last context to upload state */
+        int vertexPrim;
+
+        /*
+         * Below is for XvMC.
+         * We want the lock integers alone on, and aligned to, a cache line.
+         * Therefore this somewhat strange construct.
+         */
+
+        char XvMCLockArea[VIA_MAX_CACHELINE_SIZE * (VIA_NR_XVMC_LOCKS + 1)];
+
+        unsigned int XvMCDisplaying[VIA_NR_XVMC_PORTS];
+        unsigned int XvMCSubPicOn[VIA_NR_XVMC_PORTS];
+        unsigned int XvMCCtxNoGrabbed;  /* Last context to hold decoder */
+
+} drm_via_sarea_t;
+
+typedef struct _drm_via_cmdbuf_size {
+        enum {
+                VIA_CMDBUF_SPACE = 0x01,
+                VIA_CMDBUF_LAG = 0x02
+        } func;
+        int wait;
+        uint32_t size;
+} drm_via_cmdbuf_size_t;
+
+typedef enum {
+        VIA_IRQ_ABSOLUTE = 0x0,
+        VIA_IRQ_RELATIVE = 0x1,
+        VIA_IRQ_SIGNAL = 0x10000000,
+        VIA_IRQ_FORCE_SEQUENCE = 0x20000000
+} via_irq_seq_type_t;
+
+#define VIA_IRQ_FLAGS_MASK 0xF0000000
+
+struct drm_via_wait_irq_request{
+        unsigned irq;
+        via_irq_seq_type_t type;
+        uint32_t sequence;
+        uint32_t signal;
+};
+
+typedef union drm_via_irqwait {
+        struct drm_via_wait_irq_request request;
+        struct drm_wait_vblank_reply reply;
+} drm_via_irqwait_t;
+
+#ifdef __KERNEL__
+
+int via_fb_init(DRM_IOCTL_ARGS);
+int via_mem_alloc(DRM_IOCTL_ARGS);
+int via_mem_free(DRM_IOCTL_ARGS);
+int via_agp_init(DRM_IOCTL_ARGS);
+int via_map_init(DRM_IOCTL_ARGS);
+int via_decoder_futex(DRM_IOCTL_ARGS);
+int via_dma_init(DRM_IOCTL_ARGS);
+int via_cmdbuffer(DRM_IOCTL_ARGS);
+int via_flush_ioctl(DRM_IOCTL_ARGS);
+int via_pci_cmdbuffer(DRM_IOCTL_ARGS);
+int via_cmdbuf_size(DRM_IOCTL_ARGS);
+int via_wait_irq(DRM_IOCTL_ARGS);
+
+#endif
+#endif                          /* _VIA_DRM_H_ */