int rc;
/* estimate risc mem: worst case is one write per page border +
- one write per scan line + sync + jump (all 2 dwords) */
- instructions = (bpl * lines) / PAGE_SIZE + lines;
+ one write per scan line + sync + jump (all 2 dwords). padding
+ can cause next bpl to start close to a page border. First DMA
+ region may be smaller than PAGE_SIZE */
+ instructions = 1 + ((bpl + padding) * lines) / PAGE_SIZE + lines;
instructions += 2;
if ((rc = btcx_riscmem_alloc(btv->c.pci,risc,instructions*8)) < 0)
return rc;
/* save pointer to jmp instruction address */
risc->jmp = rp;
- BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
+ BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
return 0;
}
/* save pointer to jmp instruction address */
risc->jmp = rp;
- BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
+ BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
return 0;
}
/* save pointer to jmp instruction address */
risc->jmp = rp;
- BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
+ BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
kfree(skips);
return 0;
}
/* save pointer to jmp instruction address */
risc->jmp = rp;
- BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
+ BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size);
return 0;
}
/* save pointer to jmp instruction address */
risc->jmp = rp;
- BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
+ BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size);
return 0;
}