- 根目录:
- drivers
- staging
- gma500
- psb_2d.c
/**************************************************************************
* Copyright (c) 2007, Intel Corporation.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
* develop this driver.
*
**************************************************************************/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm.h>
#include <drm/drm_crtc.h>
#include "psb_drv.h"
#include "psb_reg.h"
#include "psb_drv.h"
#include "psb_fb.h"
void psb_spank(struct drm_psb_private *dev_priv)
{
PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
_PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET |
_PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET |
_PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
(void) PSB_RSGX32(PSB_CR_SOFT_RESET);
msleep(1);
PSB_WSGX32(0, PSB_CR_SOFT_RESET);
wmb();
PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT,
PSB_CR_BIF_CTRL);
wmb();
(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
msleep(1);
PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
PSB_CR_BIF_CTRL);
(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
PSB_WSGX32(dev_priv->pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
}
static int psb_2d_wait_available(struct drm_psb_private *dev_priv,
unsigned size)
{
uint32_t avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
unsigned long t = jiffies + HZ;
while(avail < size) {
avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
if (time_after(jiffies, t)) {
psb_spank(dev_priv);
return -EIO;
}
}
return 0;
}
/* FIXME: Remember if we expose the 2D engine to the DRM we need to serialize
it with console use */
int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
unsigned size)
{
int ret = 0;
int i;
unsigned submit_size;
while (size > 0) {
submit_size = (size < 0x60) ? size : 0x60;
size -= submit_size;
ret = psb_2d_wait_available(dev_priv, submit_size);
if (ret)
return ret;
submit_size <<= 2;
for (i = 0; i < submit_size; i += 4) {
PSB_WSGX32(*cmdbuf++, PSB_SGX_2D_SLAVE_PORT + i);
}
(void)PSB_RSGX32(PSB_SGX_2D_SLAVE_PORT + i - 4);
}
return 0;
}
static int psb_accel_2d_fillrect(struct drm_psb_private *dev_priv,
uint32_t dst_offset, uint32_t dst_stride,
uint32_t dst_format, uint16_t dst_x,
uint16_t dst_y, uint16_t size_x,
uint16_t size_y, uint32_t fill)
{
uint32_t buffer[10];
uint32_t *buf;
buf = buffer;
*buf++ = PSB_2D_FENCE_BH;
*buf++ =
PSB_2D_DST_SURF_BH | dst_format | (dst_stride <<
PSB_2D_DST_STRIDE_SHIFT);
*buf++ = dst_offset;
*buf++ =
PSB_2D_BLIT_BH |
PSB_2D_ROT_NONE |
PSB_2D_COPYORDER_TL2BR |
PSB_2D_DSTCK_DISABLE |
PSB_2D_SRCCK_DISABLE | PSB_2D_USE_FILL | PSB_2D_ROP3_PATCOPY;
*buf++ = fill << PSB_2D_FILLCOLOUR_SHIFT;
*buf++ =
(dst_x << PSB_2D_DST_XSTART_SHIFT) | (dst_y <<
PSB_2D_DST_YSTART_SHIFT);
*buf++ =
(size_x << PSB_2D_DST_XSIZE_SHIFT) | (size_y <<
PSB_2D_DST_YSIZE_SHIFT);
*buf++ = PSB_2D_FLUSH_BH;
return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
}
static void psbfb_fillrect_accel(struct fb_info *info,
const struct fb_fillrect *r)
{
struct psb_fbdev *fbdev = info->par;
struct psb_framebuffer *psbfb = fbdev->pfb;
struct drm_device *dev = psbfb->base.dev;
struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
struct drm_psb_private *dev_priv = dev->dev_private;
uint32_t offset;
uint32_t stride;
uint32_t format;
if (!fb)
return;
offset = psbfb->gtt->offset;
stride = fb->pitch;
switch (fb->depth) {
case 8:
format = PSB_2D_DST_332RGB;
break;
case 15:
format = PSB_2D_DST_555RGB;
break;
case 16:
format = PSB_2D_DST_565RGB;
break;
case 24:
case 32:
/* this is wrong but since we don't do blending its okay */
format = PSB_2D_DST_8888ARGB;
break;
default:
/* software fallback */
cfb_fillrect(info, r);
return;
}
psb_accel_2d_fillrect(dev_priv,
offset, stride, format,
r->dx, r->dy, r->width, r->height, r->color);
}
void psbfb_fillrect(struct fb_info *info,
const struct fb_fillrect *rect)
{
if (unlikely(info->state != FBINFO_STATE_RUNNING))
return;
if (1 || (info->flags & FBINFO_HWACCEL_DISABLED))
return cfb_fillrect(info, rect);
/*psb_check_power_state(dev, PSB_DEVICE_SGX); */
psbfb_fillrect_accel(info, rect);
/* Drop power again here on MRST FIXMEAC */
}
static u32 psb_accel_2d_copy_direction(int xdir, int ydir)
{
if (xdir < 0)
return (ydir < 0) ? PSB_2D_COPYORDER_BR2TL :
PSB_2D_COPYORDER_TR2BL;
else
return (ydir < 0) ? PSB_2D_COPYORDER_BL2TR :
PSB_2D_COPYORDER_TL2BR;
}
/*
* @src_offset in bytes
* @src_stride in bytes
* @src_format psb 2D format defines
* @dst_offset in bytes
* @dst_stride in bytes
* @dst_format psb 2D format defines
* @src_x offset in pixels
* @src_y offset in pixels
* @dst_x offset in pixels
* @dst_y offset in pixels
* @size_x of the copied area
* @size_y of the copied area
*/
static int psb_accel_2d_copy(struct drm_psb_private *dev_priv,
uint32_t src_offset, uint32_t src_stride,
uint32_t src_format, uint32_t dst_offset,
uint32_t dst_stride, uint32_t dst_format,
uint16_t src_x, uint16_t src_y,
uint16_t dst_x, uint16_t dst_y,
uint16_t size_x, uint16_t size_y)
{
uint32_t blit_cmd;
uint32_t buffer[10];
uint32_t *buf;
uint32_t direction;
buf = buffer;
direction =
psb_accel_2d_copy_direction(src_x - dst_x, src_y - dst_y);
if (direction == PSB_2D_COPYORDER_BR2TL ||
direction == PSB_2D_COPYORDER_TR2BL) {
src_x += size_x - 1;
dst_x += size_x - 1;
}
if (direction == PSB_2D_COPYORDER_BR2TL ||
direction == PSB_2D_COPYORDER_BL2TR) {
src_y += size_y - 1;
dst_y += size_y - 1;
}
blit_cmd =
PSB_2D_BLIT_BH |
PSB_2D_ROT_NONE |
PSB_2D_DSTCK_DISABLE |
PSB_2D_SRCCK_DISABLE |
PSB_2D_USE_PAT | PSB_2D_ROP3_SRCCOPY | direction;
*buf++ = PSB_2D_FENCE_BH;
*buf++ =
PSB_2D_DST_SURF_BH | dst_format | (dst_stride <<
PSB_2D_DST_STRIDE_SHIFT);
*buf++ = dst_offset;
*buf++ =
PSB_2D_SRC_SURF_BH | src_format | (src_stride <<
PSB_2D_SRC_STRIDE_SHIFT);
*buf++ = src_offset;
*buf++ =
PSB_2D_SRC_OFF_BH | (src_x << PSB_2D_SRCOFF_XSTART_SHIFT) |
(src_y << PSB_2D_SRCOFF_YSTART_SHIFT);
*buf++ = blit_cmd;
*buf++ =
(dst_x << PSB_2D_DST_XSTART_SHIFT) | (dst_y <<
PSB_2D_DST_YSTART_SHIFT);
*buf++ =
(size_x << PSB_2D_DST_XSIZE_SHIFT) | (size_y <<
PSB_2D_DST_YSIZE_SHIFT);
*buf++ = PSB_2D_FLUSH_BH;
return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
}
static void psbfb_copyarea_accel(struct fb_info *info,
const struct fb_copyarea *a)
{
struct psb_fbdev *fbdev = info->par;
struct psb_framebuffer *psbfb = fbdev->pfb;
struct drm_device *dev = psbfb->base.dev;
struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
struct drm_psb_private *dev_priv = dev->dev_private;
uint32_t offset;
uint32_t stride;
uint32_t src_format;
uint32_t dst_format;
if (!fb)
return;
offset = psbfb->gtt->offset;
stride = fb->pitch;
switch (fb->depth) {
case 8:
src_format = PSB_2D_SRC_332RGB;
dst_format = PSB_2D_DST_332RGB;
break;
case 15:
src_format = PSB_2D_SRC_555RGB;
dst_format = PSB_2D_DST_555RGB;
break;
case 16:
src_format = PSB_2D_SRC_565RGB;
dst_format = PSB_2D_DST_565RGB;
break;
case 24:
case 32:
/* this is wrong but since we don't do blending its okay */
src_format = PSB_2D_SRC_8888ARGB;
dst_format = PSB_2D_DST_8888ARGB;
break;
default:
/* software fallback */
cfb_copyarea(info, a);
return;
}
psb_accel_2d_copy(dev_priv,
offset, stride, src_format,
offset, stride, dst_format,
a->sx, a->sy, a->dx, a->dy, a->width, a->height);
}
void psbfb_copyarea(struct fb_info *info,
const struct fb_copyarea *region)
{
if (unlikely(info->state != FBINFO_STATE_RUNNING))
return;
if (info->flags & FBINFO_HWACCEL_DISABLED)
return cfb_copyarea(info, region);
/* psb_check_power_state(dev, PSB_DEVICE_SGX); */
psbfb_copyarea_accel(info, region);
/* Need to power back off here for MRST FIXMEAC */
}
void psbfb_imageblit(struct fb_info *info, const struct fb_image *image)
{
/* For now */
cfb_imageblit(info, image);
}
int psbfb_sync(struct fb_info *info)
{
struct psb_fbdev *fbdev = info->par;
struct psb_framebuffer *psbfb = fbdev->pfb;
struct drm_device *dev = psbfb->base.dev;
struct drm_psb_private *dev_priv = dev->dev_private;
unsigned long _end = jiffies + DRM_HZ;
int busy = 0;
#if 0
/* Just a way to quickly test if cmd issue explodes */
u32 test[2] = {
PSB_2D_FENCE_BH,
};
psbfb_2d_submit(dev_priv, test, 1);
#endif
/*
* First idle the 2D engine.
*/
if ((PSB_RSGX32(PSB_CR_2D_SOCIF) == _PSB_C2_SOCIF_EMPTY) &&
((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) & _PSB_C2B_STATUS_BUSY) == 0))
goto out;
do {
busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
cpu_relax();
} while (busy && !time_after_eq(jiffies, _end));
if (busy)
busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
if (busy)
goto out;
do {
busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
_PSB_C2B_STATUS_BUSY) != 0);
cpu_relax();
} while (busy && !time_after_eq(jiffies, _end));
if (busy)
busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
_PSB_C2B_STATUS_BUSY) != 0);
out:
return (busy) ? -EBUSY : 0;
}
/*
info->fix.accel = FB_ACCEL_I830;
info->flags = FBINFO_DEFAULT;
*/