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/****************************************************************************
* Copyright (C) 2003-2006 by XGI Technology, Taiwan.
*
* 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 on the rights to use, copy, modify, merge,
* publish, distribute, sublicense, 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
* XGI 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.
***************************************************************************/
#include "xgi_drv.h"
#include "xgi_regs.h"
#include "xgi_misc.h"
static int xgi_pcie_lut_init(struct xgi_info * info)
{
u8 temp = 0;
int err;
unsigned i;
struct drm_scatter_gather request;
struct drm_sg_mem *sg;
u32 *lut;
/* Get current FB aperture size */
temp = IN3X5B(info->mmio_map, 0x27);
DRM_INFO("In3x5(0x27): 0x%x \n", temp);
if (temp & 0x01) { /* 256MB; Jong 06/05/2006; 0x10000000 */
info->pcie.base = 256 * 1024 * 1024;
} else { /* 128MB; Jong 06/05/2006; 0x08000000 */
info->pcie.base = 128 * 1024 * 1024;
}
DRM_INFO("info->pcie.base: 0x%lx\n", (unsigned long) info->pcie.base);
/* Get current lookup table page size */
temp = DRM_READ8(info->mmio_map, 0xB00C);
if (temp & 0x04) { /* 8KB */
info->lutPageSize = 8 * 1024;
} else { /* 4KB */
info->lutPageSize = 4 * 1024;
}
DRM_INFO("info->lutPageSize: 0x%x \n", info->lutPageSize);
request.size = info->pcie.size;
err = drm_sg_alloc(info->dev, & request);
if (err) {
DRM_ERROR("cannot allocate PCIE GART backing store! "
"size = %d\n", info->pcie.size);
return err;
}
sg = info->dev->sg;
info->lut_handle = drm_pci_alloc(info->dev,
sizeof(u32) * sg->pages,
PAGE_SIZE,
DMA_31BIT_MASK);
if (info->lut_handle == NULL) {
DRM_ERROR("cannot allocate PCIE lut page!\n");
return -ENOMEM;
}
lut = info->lut_handle->vaddr;
for (i = 0; i < sg->pages; i++) {
info->dev->sg->busaddr[i] = pci_map_page(info->dev->pdev,
sg->pagelist[i],
0,
PAGE_SIZE,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(info->dev->sg->busaddr[i])) {
DRM_ERROR("cannot map GART backing store for DMA!\n");
return info->dev->sg->busaddr[i];
}
lut[i] = info->dev->sg->busaddr[i];
}
DRM_MEMORYBARRIER();
/* Set GART in SFB */
temp = DRM_READ8(info->mmio_map, 0xB00C);
DRM_WRITE8(info->mmio_map, 0xB00C, temp & ~0x02);
/* Set GART base address to HW */
DRM_WRITE32(info->mmio_map, 0xB034, info->lut_handle->busaddr);
/* Flush GART table. */
DRM_WRITE8(info->mmio_map, 0xB03F, 0x40);
DRM_WRITE8(info->mmio_map, 0xB03F, 0x00);
return 0;
}
void xgi_pcie_lut_cleanup(struct xgi_info * info)
{
if (info->lut_handle) {
drm_pci_free(info->dev, info->lut_handle);
info->lut_handle = NULL;
}
}
int xgi_pcie_heap_init(struct xgi_info * info)
{
int err;
err = xgi_pcie_lut_init(info);
if (err) {
DRM_ERROR("xgi_pcie_lut_init failed\n");
return err;
}
mutex_lock(&info->dev->struct_mutex);
err = drm_sman_set_range(&info->sman, XGI_MEMLOC_NON_LOCAL,
0, info->pcie.size);
mutex_unlock(&info->dev->struct_mutex);
if (err) {
xgi_pcie_lut_cleanup(info);
}
info->pcie_heap_initialized = (err == 0);
return err;
}
/**
* xgi_find_pcie_virt
* @address: GE HW address
*
* Returns CPU virtual address. Assumes the CPU VAddr is continuous in not
* the same block
*/
void *xgi_find_pcie_virt(struct xgi_info * info, u32 address)
{
const unsigned long offset = address - info->pcie.base;
return ((u8 *) info->dev->sg->virtual) + offset;
}
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