32,7 → 32,9 |
#include <drm/drmP.h> |
#include <drm/ttm/ttm_bo_driver.h> |
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#define VMW_PPN_SIZE sizeof(unsigned long) |
#define VMW_PPN_SIZE (sizeof(unsigned long)) |
/* A future safe maximum remap size. */ |
#define VMW_PPN_PER_REMAP ((31 * 1024) / VMW_PPN_SIZE) |
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static int vmw_gmr2_bind(struct vmw_private *dev_priv, |
struct page *pages[], |
41,13 → 43,16 |
{ |
SVGAFifoCmdDefineGMR2 define_cmd; |
SVGAFifoCmdRemapGMR2 remap_cmd; |
uint32_t define_size = sizeof(define_cmd) + 4; |
uint32_t remap_size = VMW_PPN_SIZE * num_pages + sizeof(remap_cmd) + 4; |
uint32_t *cmd; |
uint32_t *cmd_orig; |
uint32_t define_size = sizeof(define_cmd) + sizeof(*cmd); |
uint32_t remap_num = num_pages / VMW_PPN_PER_REMAP + ((num_pages % VMW_PPN_PER_REMAP) > 0); |
uint32_t remap_size = VMW_PPN_SIZE * num_pages + (sizeof(remap_cmd) + sizeof(*cmd)) * remap_num; |
uint32_t remap_pos = 0; |
uint32_t cmd_size = define_size + remap_size; |
uint32_t i; |
|
cmd_orig = cmd = vmw_fifo_reserve(dev_priv, define_size + remap_size); |
cmd_orig = cmd = vmw_fifo_reserve(dev_priv, cmd_size); |
if (unlikely(cmd == NULL)) |
return -ENOMEM; |
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54,21 → 59,30 |
define_cmd.gmrId = gmr_id; |
define_cmd.numPages = num_pages; |
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*cmd++ = SVGA_CMD_DEFINE_GMR2; |
memcpy(cmd, &define_cmd, sizeof(define_cmd)); |
cmd += sizeof(define_cmd) / sizeof(*cmd); |
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/* |
* Need to split the command if there are too many |
* pages that goes into the gmr. |
*/ |
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remap_cmd.gmrId = gmr_id; |
remap_cmd.flags = (VMW_PPN_SIZE > sizeof(*cmd)) ? |
SVGA_REMAP_GMR2_PPN64 : SVGA_REMAP_GMR2_PPN32; |
remap_cmd.offsetPages = 0; |
remap_cmd.numPages = num_pages; |
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*cmd++ = SVGA_CMD_DEFINE_GMR2; |
memcpy(cmd, &define_cmd, sizeof(define_cmd)); |
cmd += sizeof(define_cmd) / sizeof(uint32); |
while (num_pages > 0) { |
unsigned long nr = min(num_pages, (unsigned long)VMW_PPN_PER_REMAP); |
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remap_cmd.offsetPages = remap_pos; |
remap_cmd.numPages = nr; |
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*cmd++ = SVGA_CMD_REMAP_GMR2; |
memcpy(cmd, &remap_cmd, sizeof(remap_cmd)); |
cmd += sizeof(remap_cmd) / sizeof(uint32); |
cmd += sizeof(remap_cmd) / sizeof(*cmd); |
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for (i = 0; i < num_pages; ++i) { |
for (i = 0; i < nr; ++i) { |
if (VMW_PPN_SIZE <= 4) |
*cmd = page_to_pfn(*pages++); |
else |
77,8 → 91,14 |
cmd += VMW_PPN_SIZE / sizeof(*cmd); |
} |
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vmw_fifo_commit(dev_priv, define_size + remap_size); |
num_pages -= nr; |
remap_pos += nr; |
} |
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BUG_ON(cmd != cmd_orig + cmd_size / sizeof(*cmd)); |
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vmw_fifo_commit(dev_priv, cmd_size); |
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return 0; |
} |
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