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#ifndef MGA_DMA_H
#define MGA_DMA_H
#include "mga_drm_public.h"
typedef enum {
TT_GENERAL,
TT_BLIT,
TT_VECTOR,
TT_VERTEX
} transferType_t;
typedef struct {
unsigned int age;
} drm_mga_buf_priv_t;
#define MGA_DMA_GENERAL 0 /* not used */
#define MGA_DMA_VERTEX 1
#define MGA_DMA_SETUP 2
#define MGA_DMA_ILOAD 3
#define MGA_DMA_CLEAR 4 /* placeholder */
#define MGA_DMA_SWAP 5 /* placeholder */
#define MGA_DMA_DISCARD 6
#define DWGREG0 0x1c00
#define DWGREG0_END 0x1dff
#define DWGREG1 0x2c00
#define DWGREG1_END 0x2dff
#define ISREG0(r) (r >= DWGREG0 && r <= DWGREG0_END)
#define ADRINDEX0(r) (u8)((r - DWGREG0) >> 2)
#define ADRINDEX1(r) (u8)(((r - DWGREG1) >> 2) | 0x80)
#define ADRINDEX(r) (ISREG0(r) ? ADRINDEX0(r) : ADRINDEX1(r))
#define MGA_VERBOSE 0
#define MGA_NUM_PRIM_BUFS 8
/* Primary buffer versions of above -- pretty similar really.
*/
#define PRIMLOCALS u8 tempIndex[4]; u32 *dma_ptr; u32 phys_head; \
int outcount, num_dwords
#define PRIM_OVERFLOW(dev, dev_priv, length) do { \
drm_mga_prim_buf_t *tmp_buf = \
dev_priv->prim_bufs[dev_priv->current_prim_idx]; \
if( (tmp_buf->max_dwords - tmp_buf->num_dwords) < length || \
tmp_buf->sec_used > (MGA_DMA_BUF_NR / 2)) { \
atomic_set(&tmp_buf->force_fire, 1); \
mga_advance_primary(dev); \
mga_dma_schedule(dev, 1); \
} \
} while(0)
#define PRIMGETPTR(dev_priv) do { \
drm_mga_prim_buf_t *tmp_buf = \
dev_priv->prim_bufs[dev_priv->current_prim_idx]; \
if(MGA_VERBOSE) \
printk("PRIMGETPTR in %s\n", __FUNCTION__); \
dma_ptr = tmp_buf->current_dma_ptr; \
num_dwords = tmp_buf->num_dwords; \
phys_head = tmp_buf->phys_head; \
outcount = 0; \
} while(0)
#define PRIMPTR(prim_buf) do { \
if(MGA_VERBOSE) \
printk("PRIMPTR in %s\n", __FUNCTION__); \
dma_ptr = prim_buf->current_dma_ptr; \
num_dwords = prim_buf->num_dwords; \
phys_head = prim_buf->phys_head; \
outcount = 0; \
} while(0)
#define PRIMFINISH(prim_buf) do { \
if (MGA_VERBOSE) { \
printk(KERN_INFO "PRIMFINISH in %s\n", __FUNCTION__); \
if (outcount & 3) \
printk(KERN_INFO " --- truncation\n"); \
} \
prim_buf->num_dwords = num_dwords; \
prim_buf->current_dma_ptr = dma_ptr; \
} while(0)
#define PRIMADVANCE(dev_priv) do { \
drm_mga_prim_buf_t *tmp_buf = \
dev_priv->prim_bufs[dev_priv->current_prim_idx]; \
if (MGA_VERBOSE) { \
printk(KERN_INFO "PRIMADVANCE in %s\n", __FUNCTION__); \
if (outcount & 3) \
printk(KERN_INFO " --- truncation\n"); \
} \
tmp_buf->num_dwords = num_dwords; \
tmp_buf->current_dma_ptr = dma_ptr; \
} while (0)
#define PRIMUPDATE(dev_priv) do { \
drm_mga_prim_buf_t *tmp_buf = \
dev_priv->prim_bufs[dev_priv->current_prim_idx]; \
tmp_buf->sec_used++; \
} while (0)
#define PRIMOUTREG(reg, val) do { \
tempIndex[outcount]=ADRINDEX(reg); \
dma_ptr[1+outcount] = val; \
if (MGA_VERBOSE) \
printk(KERN_INFO \
" PRIMOUT %d: 0x%x -- 0x%x\n", \
num_dwords + 1 + outcount, ADRINDEX(reg), val); \
if( ++outcount == 4) { \
outcount = 0; \
dma_ptr[0] = *(u32 *)tempIndex; \
dma_ptr+=5; \
num_dwords += 5; \
} \
}while (0)
#define MGA_CLEAR_CMD (DC_opcod_trap | DC_arzero_enable | \
DC_sgnzero_enable | DC_shftzero_enable | \
(0xC << DC_bop_SHIFT) | DC_clipdis_enable | \
DC_solid_enable | DC_transc_enable)
#define MGA_COPY_CMD (DC_opcod_bitblt | DC_atype_rpl | DC_linear_xy | \
DC_solid_disable | DC_arzero_disable | \
DC_sgnzero_enable | DC_shftzero_enable | \
(0xC << DC_bop_SHIFT) | DC_bltmod_bfcol | \
DC_pattern_disable | DC_transc_disable | \
DC_clipdis_enable) \
#define MGA_ILOAD_CMD (DC_opcod_iload | DC_atype_rpl | \
DC_linear_linear | DC_bltmod_bfcol | \
(0xC << DC_bop_SHIFT) | DC_sgnzero_enable | \
DC_shftzero_enable | DC_clipdis_enable)
#endif
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