static int ati_remove_memory(struct agp_memory * mem, off_t pg_start,
int type)
{
int i;
unsigned long __iomem *cur_gatt;
unsigned long addr;
int mask_type;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
cur_gatt = GET_GATT(addr);
writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
}
readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int ati_insert_memory(struct agp_memory * mem,
off_t pg_start, int type)
{
int i, j, num_entries;
unsigned long __iomem *cur_gatt;
unsigned long addr;
int mask_type;
num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
if ((pg_start + mem->page_count) > num_entries)
return -EINVAL;
j = pg_start;
while (j < (pg_start + mem->page_count)) {
addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
cur_gatt = GET_GATT(addr);
if (!PGE_EMPTY(agp_bridge,readl(cur_gatt+GET_GATT_OFF(addr))))
return -EBUSY;
j++;
}
if (!mem->is_flushed) {
/*CACHE_FLUSH(); */
global_cache_flush();
mem->is_flushed = true;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
cur_gatt = GET_GATT(addr);
writel(agp_bridge->driver->mask_memory(agp_bridge,
page_to_phys(mem->pages[i]),
mem->type),
cur_gatt+GET_GATT_OFF(addr));
}
readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int nvidia_remove_memory(struct agp_memory *mem, off_t pg_start, int type)
{
int i;
int mask_type;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
for (i = pg_start; i < (mem->page_count + pg_start); i++)
writel(agp_bridge->scratch_page, agp_bridge->gatt_table+nvidia_private.pg_offset+i);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int nvidia_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
{
int i, j;
int mask_type;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
if ((pg_start + mem->page_count) >
(nvidia_private.num_active_entries - agp_memory_reserved/PAGE_SIZE))
return -EINVAL;
for (j = pg_start; j < (pg_start + mem->page_count); j++) {
if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j)))
return -EBUSY;
}
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = true;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
page_to_phys(mem->pages[i]), mask_type),
agp_bridge->gatt_table+nvidia_private.pg_offset+j);
}
/* PCI Posting. */
readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j - 1);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
