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gma500: introduce the framebuffer support code
We support 2D acceleration on some devices but we try and do tricks with the GTT as a starting point as this is far faster. The GTT logic could be improved further but for most display sizes it already makes a pretty good decision. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
parent
8c8f1c958a
commit
4d8d096e9a
362
drivers/gpu/drm/gma500/accel_2d.c
Normal file
362
drivers/gpu/drm/gma500/accel_2d.c
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@ -0,0 +1,362 @@
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/**************************************************************************
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* Copyright (c) 2007-2011, Intel Corporation.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
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* develop this driver.
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*
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**************************************************************************/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <drm/drmP.h>
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#include <drm/drm.h>
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#include <drm/drm_crtc.h>
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#include "psb_drv.h"
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#include "psb_reg.h"
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#include "framebuffer.h"
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/**
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* psb_spank - reset the 2D engine
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* @dev_priv: our PSB DRM device
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*
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* Soft reset the graphics engine and then reload the necessary registers.
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* We use this at initialisation time but it will become relevant for
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* accelerated X later
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*/
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void psb_spank(struct drm_psb_private *dev_priv)
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{
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PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
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_PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET |
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_PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET |
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_PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
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PSB_RSGX32(PSB_CR_SOFT_RESET);
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msleep(1);
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PSB_WSGX32(0, PSB_CR_SOFT_RESET);
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wmb();
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PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT,
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PSB_CR_BIF_CTRL);
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wmb();
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(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
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msleep(1);
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PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
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PSB_CR_BIF_CTRL);
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(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
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PSB_WSGX32(dev_priv->gtt.gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
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}
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/**
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* psb2_2d_wait_available - wait for FIFO room
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* @dev_priv: our DRM device
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* @size: size (in dwords) of the command we want to issue
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*
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* Wait until there is room to load the FIFO with our data. If the
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* device is not responding then reset it
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*/
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static int psb_2d_wait_available(struct drm_psb_private *dev_priv,
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unsigned size)
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{
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uint32_t avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
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unsigned long t = jiffies + HZ;
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while (avail < size) {
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avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
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if (time_after(jiffies, t)) {
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psb_spank(dev_priv);
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return -EIO;
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}
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}
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return 0;
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}
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/**
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* psb_2d_submit - submit a 2D command
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* @dev_priv: our DRM device
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* @cmdbuf: command to issue
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* @size: length (in dwords)
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*
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* Issue one or more 2D commands to the accelerator. This needs to be
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* serialized later when we add the GEM interfaces for acceleration
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*/
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static int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
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unsigned size)
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{
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int ret = 0;
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int i;
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unsigned submit_size;
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mutex_lock(&dev_priv->mutex_2d);
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while (size > 0) {
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submit_size = (size < 0x60) ? size : 0x60;
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size -= submit_size;
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ret = psb_2d_wait_available(dev_priv, submit_size);
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if (ret)
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break;
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submit_size <<= 2;
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for (i = 0; i < submit_size; i += 4)
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PSB_WSGX32(*cmdbuf++, PSB_SGX_2D_SLAVE_PORT + i);
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(void)PSB_RSGX32(PSB_SGX_2D_SLAVE_PORT + i - 4);
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}
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mutex_unlock(&dev_priv->mutex_2d);
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return ret;
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}
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/**
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* psb_accel_2d_copy_direction - compute blit order
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* @xdir: X direction of move
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* @ydir: Y direction of move
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*
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* Compute the correct order setings to ensure that an overlapping blit
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* correctly copies all the pixels.
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*/
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static u32 psb_accel_2d_copy_direction(int xdir, int ydir)
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{
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if (xdir < 0)
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return (ydir < 0) ? PSB_2D_COPYORDER_BR2TL :
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PSB_2D_COPYORDER_TR2BL;
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else
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return (ydir < 0) ? PSB_2D_COPYORDER_BL2TR :
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PSB_2D_COPYORDER_TL2BR;
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}
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/**
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* psb_accel_2d_copy - accelerated 2D copy
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* @dev_priv: our DRM device
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* @src_offset in bytes
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* @src_stride in bytes
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* @src_format psb 2D format defines
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* @dst_offset in bytes
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* @dst_stride in bytes
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* @dst_format psb 2D format defines
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* @src_x offset in pixels
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* @src_y offset in pixels
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* @dst_x offset in pixels
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* @dst_y offset in pixels
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* @size_x of the copied area
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* @size_y of the copied area
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*
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* Format and issue a 2D accelerated copy command.
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*/
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static int psb_accel_2d_copy(struct drm_psb_private *dev_priv,
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uint32_t src_offset, uint32_t src_stride,
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uint32_t src_format, uint32_t dst_offset,
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uint32_t dst_stride, uint32_t dst_format,
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uint16_t src_x, uint16_t src_y,
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uint16_t dst_x, uint16_t dst_y,
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uint16_t size_x, uint16_t size_y)
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{
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uint32_t blit_cmd;
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uint32_t buffer[10];
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uint32_t *buf;
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uint32_t direction;
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buf = buffer;
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direction =
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psb_accel_2d_copy_direction(src_x - dst_x, src_y - dst_y);
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if (direction == PSB_2D_COPYORDER_BR2TL ||
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direction == PSB_2D_COPYORDER_TR2BL) {
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src_x += size_x - 1;
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dst_x += size_x - 1;
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}
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if (direction == PSB_2D_COPYORDER_BR2TL ||
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direction == PSB_2D_COPYORDER_BL2TR) {
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src_y += size_y - 1;
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dst_y += size_y - 1;
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}
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blit_cmd =
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PSB_2D_BLIT_BH |
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PSB_2D_ROT_NONE |
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PSB_2D_DSTCK_DISABLE |
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PSB_2D_SRCCK_DISABLE |
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PSB_2D_USE_PAT | PSB_2D_ROP3_SRCCOPY | direction;
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*buf++ = PSB_2D_FENCE_BH;
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*buf++ =
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PSB_2D_DST_SURF_BH | dst_format | (dst_stride <<
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PSB_2D_DST_STRIDE_SHIFT);
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*buf++ = dst_offset;
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*buf++ =
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PSB_2D_SRC_SURF_BH | src_format | (src_stride <<
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PSB_2D_SRC_STRIDE_SHIFT);
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*buf++ = src_offset;
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*buf++ =
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PSB_2D_SRC_OFF_BH | (src_x << PSB_2D_SRCOFF_XSTART_SHIFT) |
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(src_y << PSB_2D_SRCOFF_YSTART_SHIFT);
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*buf++ = blit_cmd;
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*buf++ =
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(dst_x << PSB_2D_DST_XSTART_SHIFT) | (dst_y <<
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PSB_2D_DST_YSTART_SHIFT);
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*buf++ =
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(size_x << PSB_2D_DST_XSIZE_SHIFT) | (size_y <<
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PSB_2D_DST_YSIZE_SHIFT);
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*buf++ = PSB_2D_FLUSH_BH;
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return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
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}
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/**
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* psbfb_copyarea_accel - copyarea acceleration for /dev/fb
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* @info: our framebuffer
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* @a: copyarea parameters from the framebuffer core
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*
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* Perform a 2D copy via the accelerator
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*/
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static void psbfb_copyarea_accel(struct fb_info *info,
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const struct fb_copyarea *a)
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{
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struct psb_fbdev *fbdev = info->par;
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struct psb_framebuffer *psbfb = &fbdev->pfb;
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struct drm_device *dev = psbfb->base.dev;
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struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
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struct drm_psb_private *dev_priv = dev->dev_private;
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uint32_t offset;
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uint32_t stride;
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uint32_t src_format;
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uint32_t dst_format;
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if (!fb)
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return;
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offset = psbfb->gtt->offset;
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stride = fb->pitch;
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switch (fb->depth) {
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case 8:
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src_format = PSB_2D_SRC_332RGB;
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dst_format = PSB_2D_DST_332RGB;
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break;
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case 15:
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src_format = PSB_2D_SRC_555RGB;
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dst_format = PSB_2D_DST_555RGB;
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break;
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case 16:
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src_format = PSB_2D_SRC_565RGB;
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dst_format = PSB_2D_DST_565RGB;
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break;
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case 24:
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case 32:
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/* this is wrong but since we don't do blending its okay */
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src_format = PSB_2D_SRC_8888ARGB;
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dst_format = PSB_2D_DST_8888ARGB;
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break;
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default:
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/* software fallback */
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cfb_copyarea(info, a);
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return;
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}
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if (!gma_power_begin(dev, false)) {
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cfb_copyarea(info, a);
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return;
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}
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psb_accel_2d_copy(dev_priv,
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offset, stride, src_format,
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offset, stride, dst_format,
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a->sx, a->sy, a->dx, a->dy, a->width, a->height);
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gma_power_end(dev);
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}
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/**
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* psbfb_copyarea - 2D copy interface
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* @info: our framebuffer
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* @region: region to copy
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*
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* Copy an area of the framebuffer console either by the accelerator
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* or directly using the cfb helpers according to the request
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*/
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void psbfb_copyarea(struct fb_info *info,
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const struct fb_copyarea *region)
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{
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if (unlikely(info->state != FBINFO_STATE_RUNNING))
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return;
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/* Avoid the 8 pixel erratum */
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if (region->width == 8 || region->height == 8 ||
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(info->flags & FBINFO_HWACCEL_DISABLED))
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return cfb_copyarea(info, region);
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psbfb_copyarea_accel(info, region);
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}
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/**
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* psbfb_sync - synchronize 2D
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* @info: our framebuffer
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*
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* Wait for the 2D engine to quiesce so that we can do CPU
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* access to the framebuffer again
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*/
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int psbfb_sync(struct fb_info *info)
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{
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struct psb_fbdev *fbdev = info->par;
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struct psb_framebuffer *psbfb = &fbdev->pfb;
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struct drm_device *dev = psbfb->base.dev;
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struct drm_psb_private *dev_priv = dev->dev_private;
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unsigned long _end = jiffies + DRM_HZ;
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int busy = 0;
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mutex_lock(&dev_priv->mutex_2d);
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/*
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* First idle the 2D engine.
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*/
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if ((PSB_RSGX32(PSB_CR_2D_SOCIF) == _PSB_C2_SOCIF_EMPTY) &&
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((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) & _PSB_C2B_STATUS_BUSY) == 0))
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goto out;
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do {
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busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
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cpu_relax();
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} while (busy && !time_after_eq(jiffies, _end));
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if (busy)
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busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
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if (busy)
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goto out;
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do {
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busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
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_PSB_C2B_STATUS_BUSY) != 0);
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cpu_relax();
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} while (busy && !time_after_eq(jiffies, _end));
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if (busy)
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busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
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_PSB_C2B_STATUS_BUSY) != 0);
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out:
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mutex_unlock(&dev_priv->mutex_2d);
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return (busy) ? -EBUSY : 0;
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}
|
784
drivers/gpu/drm/gma500/framebuffer.c
Normal file
784
drivers/gpu/drm/gma500/framebuffer.c
Normal file
@ -0,0 +1,784 @@
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/**************************************************************************
|
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* Copyright (c) 2007-2011, Intel Corporation.
|
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* 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.
|
||||
*
|
||||
**************************************************************************/
|
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|
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#include <linux/module.h>
|
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#include <linux/kernel.h>
|
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#include <linux/errno.h>
|
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#include <linux/string.h>
|
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#include <linux/mm.h>
|
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#include <linux/tty.h>
|
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#include <linux/slab.h>
|
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/console.h>
|
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|
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#include <drm/drmP.h>
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#include <drm/drm.h>
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#include <drm/drm_crtc.h>
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#include "psb_drv.h"
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#include "psb_intel_reg.h"
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#include "psb_intel_drv.h"
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#include "framebuffer.h"
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|
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static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
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static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
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struct drm_file *file_priv,
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unsigned int *handle);
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|
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static const struct drm_framebuffer_funcs psb_fb_funcs = {
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.destroy = psb_user_framebuffer_destroy,
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.create_handle = psb_user_framebuffer_create_handle,
|
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};
|
||||
|
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#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
|
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|
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static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
|
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unsigned blue, unsigned transp,
|
||||
struct fb_info *info)
|
||||
{
|
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struct psb_fbdev *fbdev = info->par;
|
||||
struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
|
||||
uint32_t v;
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|
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if (!fb)
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return -ENOMEM;
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||||
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if (regno > 255)
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return 1;
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||||
|
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red = CMAP_TOHW(red, info->var.red.length);
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||||
blue = CMAP_TOHW(blue, info->var.blue.length);
|
||||
green = CMAP_TOHW(green, info->var.green.length);
|
||||
transp = CMAP_TOHW(transp, info->var.transp.length);
|
||||
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||||
v = (red << info->var.red.offset) |
|
||||
(green << info->var.green.offset) |
|
||||
(blue << info->var.blue.offset) |
|
||||
(transp << info->var.transp.offset);
|
||||
|
||||
if (regno < 16) {
|
||||
switch (fb->bits_per_pixel) {
|
||||
case 16:
|
||||
((uint32_t *) info->pseudo_palette)[regno] = v;
|
||||
break;
|
||||
case 24:
|
||||
case 32:
|
||||
((uint32_t *) info->pseudo_palette)[regno] = v;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
void psbfb_suspend(struct drm_device *dev)
|
||||
{
|
||||
struct drm_framebuffer *fb = 0;
|
||||
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
||||
|
||||
console_lock();
|
||||
mutex_lock(&dev->mode_config.mutex);
|
||||
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
|
||||
struct fb_info *info = psbfb->fbdev;
|
||||
fb_set_suspend(info, 1);
|
||||
drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
|
||||
}
|
||||
mutex_unlock(&dev->mode_config.mutex);
|
||||
console_unlock();
|
||||
}
|
||||
|
||||
void psbfb_resume(struct drm_device *dev)
|
||||
{
|
||||
struct drm_framebuffer *fb = 0;
|
||||
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
||||
|
||||
console_lock();
|
||||
mutex_lock(&dev->mode_config.mutex);
|
||||
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
|
||||
struct fb_info *info = psbfb->fbdev;
|
||||
fb_set_suspend(info, 0);
|
||||
drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
|
||||
}
|
||||
mutex_unlock(&dev->mode_config.mutex);
|
||||
console_unlock();
|
||||
drm_helper_disable_unused_functions(dev);
|
||||
}
|
||||
|
||||
static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
|
||||
{
|
||||
struct psb_framebuffer *psbfb = vma->vm_private_data;
|
||||
struct drm_device *dev = psbfb->base.dev;
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
int page_num;
|
||||
int i;
|
||||
unsigned long address;
|
||||
int ret;
|
||||
unsigned long pfn;
|
||||
/* FIXME: assumes fb at stolen base which may not be true */
|
||||
unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
|
||||
|
||||
page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
|
||||
address = (unsigned long)vmf->virtual_address;
|
||||
|
||||
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
||||
|
||||
for (i = 0; i < page_num; i++) {
|
||||
pfn = (phys_addr >> PAGE_SHIFT);
|
||||
|
||||
ret = vm_insert_mixed(vma, address, pfn);
|
||||
if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
|
||||
break;
|
||||
else if (unlikely(ret != 0)) {
|
||||
ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
|
||||
return ret;
|
||||
}
|
||||
address += PAGE_SIZE;
|
||||
phys_addr += PAGE_SIZE;
|
||||
}
|
||||
return VM_FAULT_NOPAGE;
|
||||
}
|
||||
|
||||
static void psbfb_vm_open(struct vm_area_struct *vma)
|
||||
{
|
||||
}
|
||||
|
||||
static void psbfb_vm_close(struct vm_area_struct *vma)
|
||||
{
|
||||
}
|
||||
|
||||
static struct vm_operations_struct psbfb_vm_ops = {
|
||||
.fault = psbfb_vm_fault,
|
||||
.open = psbfb_vm_open,
|
||||
.close = psbfb_vm_close
|
||||
};
|
||||
|
||||
static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
|
||||
{
|
||||
struct psb_fbdev *fbdev = info->par;
|
||||
struct psb_framebuffer *psbfb = &fbdev->pfb;
|
||||
|
||||
if (vma->vm_pgoff != 0)
|
||||
return -EINVAL;
|
||||
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
|
||||
return -EINVAL;
|
||||
|
||||
if (!psbfb->addr_space)
|
||||
psbfb->addr_space = vma->vm_file->f_mapping;
|
||||
/*
|
||||
* If this is a GEM object then info->screen_base is the virtual
|
||||
* kernel remapping of the object. FIXME: Review if this is
|
||||
* suitable for our mmap work
|
||||
*/
|
||||
vma->vm_ops = &psbfb_vm_ops;
|
||||
vma->vm_private_data = (void *)psbfb;
|
||||
vma->vm_flags |= VM_RESERVED | VM_IO |
|
||||
VM_MIXEDMAP | VM_DONTEXPAND;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
||||
static struct fb_ops psbfb_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.fb_check_var = drm_fb_helper_check_var,
|
||||
.fb_set_par = drm_fb_helper_set_par,
|
||||
.fb_blank = drm_fb_helper_blank,
|
||||
.fb_setcolreg = psbfb_setcolreg,
|
||||
.fb_fillrect = cfb_fillrect,
|
||||
.fb_copyarea = psbfb_copyarea,
|
||||
.fb_imageblit = cfb_imageblit,
|
||||
.fb_mmap = psbfb_mmap,
|
||||
.fb_sync = psbfb_sync,
|
||||
.fb_ioctl = psbfb_ioctl,
|
||||
};
|
||||
|
||||
static struct fb_ops psbfb_unaccel_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.fb_check_var = drm_fb_helper_check_var,
|
||||
.fb_set_par = drm_fb_helper_set_par,
|
||||
.fb_blank = drm_fb_helper_blank,
|
||||
.fb_setcolreg = psbfb_setcolreg,
|
||||
.fb_fillrect = cfb_fillrect,
|
||||
.fb_copyarea = cfb_copyarea,
|
||||
.fb_imageblit = cfb_imageblit,
|
||||
.fb_mmap = psbfb_mmap,
|
||||
.fb_ioctl = psbfb_ioctl,
|
||||
};
|
||||
|
||||
/**
|
||||
* psb_framebuffer_init - initialize a framebuffer
|
||||
* @dev: our DRM device
|
||||
* @fb: framebuffer to set up
|
||||
* @mode_cmd: mode description
|
||||
* @gt: backing object
|
||||
*
|
||||
* Configure and fill in the boilerplate for our frame buffer. Return
|
||||
* 0 on success or an error code if we fail.
|
||||
*/
|
||||
static int psb_framebuffer_init(struct drm_device *dev,
|
||||
struct psb_framebuffer *fb,
|
||||
struct drm_mode_fb_cmd *mode_cmd,
|
||||
struct gtt_range *gt)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (mode_cmd->pitch & 63)
|
||||
return -EINVAL;
|
||||
switch (mode_cmd->bpp) {
|
||||
case 8:
|
||||
case 16:
|
||||
case 24:
|
||||
case 32:
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
|
||||
if (ret) {
|
||||
dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
|
||||
fb->gtt = gt;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* psb_framebuffer_create - create a framebuffer backed by gt
|
||||
* @dev: our DRM device
|
||||
* @mode_cmd: the description of the requested mode
|
||||
* @gt: the backing object
|
||||
*
|
||||
* Create a framebuffer object backed by the gt, and fill in the
|
||||
* boilerplate required
|
||||
*
|
||||
* TODO: review object references
|
||||
*/
|
||||
|
||||
static struct drm_framebuffer *psb_framebuffer_create
|
||||
(struct drm_device *dev,
|
||||
struct drm_mode_fb_cmd *mode_cmd,
|
||||
struct gtt_range *gt)
|
||||
{
|
||||
struct psb_framebuffer *fb;
|
||||
int ret;
|
||||
|
||||
fb = kzalloc(sizeof(*fb), GFP_KERNEL);
|
||||
if (!fb)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
|
||||
if (ret) {
|
||||
kfree(fb);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
return &fb->base;
|
||||
}
|
||||
|
||||
/**
|
||||
* psbfb_alloc - allocate frame buffer memory
|
||||
* @dev: the DRM device
|
||||
* @aligned_size: space needed
|
||||
*
|
||||
* Allocate the frame buffer. In the usual case we get a GTT range that
|
||||
* is stolen memory backed and life is simple. If there isn't sufficient
|
||||
* stolen memory or the system has no stolen memory we allocate a range
|
||||
* and back it with a GEM object.
|
||||
*
|
||||
* In this case the GEM object has no handle.
|
||||
*
|
||||
* FIXME: console speed up - allocate twice the space if room and use
|
||||
* hardware scrolling for acceleration.
|
||||
*/
|
||||
static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
|
||||
{
|
||||
struct gtt_range *backing;
|
||||
/* Begin by trying to use stolen memory backing */
|
||||
backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
|
||||
if (backing) {
|
||||
if (drm_gem_private_object_init(dev,
|
||||
&backing->gem, aligned_size) == 0)
|
||||
return backing;
|
||||
psb_gtt_free_range(dev, backing);
|
||||
}
|
||||
/* Next try using GEM host memory */
|
||||
backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
|
||||
if (backing == NULL)
|
||||
return NULL;
|
||||
|
||||
/* Now back it with an object */
|
||||
if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
|
||||
psb_gtt_free_range(dev, backing);
|
||||
return NULL;
|
||||
}
|
||||
return backing;
|
||||
}
|
||||
|
||||
/**
|
||||
* psbfb_create - create a framebuffer
|
||||
* @fbdev: the framebuffer device
|
||||
* @sizes: specification of the layout
|
||||
*
|
||||
* Create a framebuffer to the specifications provided
|
||||
*/
|
||||
static int psbfb_create(struct psb_fbdev *fbdev,
|
||||
struct drm_fb_helper_surface_size *sizes)
|
||||
{
|
||||
struct drm_device *dev = fbdev->psb_fb_helper.dev;
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct fb_info *info;
|
||||
struct drm_framebuffer *fb;
|
||||
struct psb_framebuffer *psbfb = &fbdev->pfb;
|
||||
struct drm_mode_fb_cmd mode_cmd;
|
||||
struct device *device = &dev->pdev->dev;
|
||||
int size;
|
||||
int ret;
|
||||
struct gtt_range *backing;
|
||||
|
||||
mode_cmd.width = sizes->surface_width;
|
||||
mode_cmd.height = sizes->surface_height;
|
||||
mode_cmd.bpp = sizes->surface_bpp;
|
||||
|
||||
/* No 24bit packed */
|
||||
if (mode_cmd.bpp == 24)
|
||||
mode_cmd.bpp = 32;
|
||||
|
||||
/* HW requires pitch to be 64 byte aligned */
|
||||
mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
|
||||
mode_cmd.depth = sizes->surface_depth;
|
||||
|
||||
size = mode_cmd.pitch * mode_cmd.height;
|
||||
size = ALIGN(size, PAGE_SIZE);
|
||||
|
||||
/* Allocate the framebuffer in the GTT with stolen page backing */
|
||||
backing = psbfb_alloc(dev, size);
|
||||
if (backing == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
mutex_lock(&dev->struct_mutex);
|
||||
|
||||
info = framebuffer_alloc(0, device);
|
||||
if (!info) {
|
||||
ret = -ENOMEM;
|
||||
goto out_err1;
|
||||
}
|
||||
info->par = fbdev;
|
||||
|
||||
ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
|
||||
if (ret)
|
||||
goto out_unref;
|
||||
|
||||
fb = &psbfb->base;
|
||||
psbfb->fbdev = info;
|
||||
|
||||
fbdev->psb_fb_helper.fb = fb;
|
||||
fbdev->psb_fb_helper.fbdev = info;
|
||||
|
||||
strcpy(info->fix.id, "psbfb");
|
||||
|
||||
info->flags = FBINFO_DEFAULT;
|
||||
/* No 2D engine */
|
||||
if (!dev_priv->ops->accel_2d)
|
||||
info->fbops = &psbfb_unaccel_ops;
|
||||
else
|
||||
info->fbops = &psbfb_ops;
|
||||
|
||||
ret = fb_alloc_cmap(&info->cmap, 256, 0);
|
||||
if (ret) {
|
||||
ret = -ENOMEM;
|
||||
goto out_unref;
|
||||
}
|
||||
|
||||
info->fix.smem_start = dev->mode_config.fb_base;
|
||||
info->fix.smem_len = size;
|
||||
|
||||
if (backing->stolen) {
|
||||
/* Accessed stolen memory directly */
|
||||
info->screen_base = (char *)dev_priv->vram_addr +
|
||||
backing->offset;
|
||||
} else {
|
||||
/* Pin the pages into the GTT and create a mapping to them */
|
||||
psb_gtt_pin(backing);
|
||||
info->screen_base = vm_map_ram(backing->pages, backing->npage,
|
||||
-1, PAGE_KERNEL);
|
||||
if (info->screen_base == NULL) {
|
||||
psb_gtt_unpin(backing);
|
||||
ret = -ENOMEM;
|
||||
goto out_unref;
|
||||
}
|
||||
psbfb->vm_map = 1;
|
||||
}
|
||||
info->screen_size = size;
|
||||
|
||||
if (dev_priv->gtt.stolen_size) {
|
||||
info->apertures = alloc_apertures(1);
|
||||
if (!info->apertures) {
|
||||
ret = -ENOMEM;
|
||||
goto out_unref;
|
||||
}
|
||||
info->apertures->ranges[0].base = dev->mode_config.fb_base;
|
||||
info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
|
||||
}
|
||||
|
||||
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
|
||||
drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
|
||||
sizes->fb_width, sizes->fb_height);
|
||||
|
||||
info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
|
||||
info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
|
||||
|
||||
info->pixmap.size = 64 * 1024;
|
||||
info->pixmap.buf_align = 8;
|
||||
info->pixmap.access_align = 32;
|
||||
info->pixmap.flags = FB_PIXMAP_SYSTEM;
|
||||
info->pixmap.scan_align = 1;
|
||||
|
||||
dev_info(dev->dev, "allocated %dx%d fb\n",
|
||||
psbfb->base.width, psbfb->base.height);
|
||||
|
||||
mutex_unlock(&dev->struct_mutex);
|
||||
return 0;
|
||||
out_unref:
|
||||
if (backing->stolen)
|
||||
psb_gtt_free_range(dev, backing);
|
||||
else {
|
||||
if (psbfb->vm_map)
|
||||
vm_unmap_ram(info->screen_base, backing->npage);
|
||||
drm_gem_object_unreference(&backing->gem);
|
||||
}
|
||||
out_err1:
|
||||
mutex_unlock(&dev->struct_mutex);
|
||||
psb_gtt_free_range(dev, backing);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* psb_user_framebuffer_create - create framebuffer
|
||||
* @dev: our DRM device
|
||||
* @filp: client file
|
||||
* @cmd: mode request
|
||||
*
|
||||
* Create a new framebuffer backed by a userspace GEM object
|
||||
*/
|
||||
static struct drm_framebuffer *psb_user_framebuffer_create
|
||||
(struct drm_device *dev, struct drm_file *filp,
|
||||
struct drm_mode_fb_cmd *cmd)
|
||||
{
|
||||
struct gtt_range *r;
|
||||
struct drm_gem_object *obj;
|
||||
|
||||
/*
|
||||
* Find the GEM object and thus the gtt range object that is
|
||||
* to back this space
|
||||
*/
|
||||
obj = drm_gem_object_lookup(dev, filp, cmd->handle);
|
||||
if (obj == NULL)
|
||||
return ERR_PTR(-ENOENT);
|
||||
|
||||
/* Let the core code do all the work */
|
||||
r = container_of(obj, struct gtt_range, gem);
|
||||
return psb_framebuffer_create(dev, cmd, r);
|
||||
}
|
||||
|
||||
static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
|
||||
u16 blue, int regno)
|
||||
{
|
||||
}
|
||||
|
||||
static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
|
||||
u16 *green, u16 *blue, int regno)
|
||||
{
|
||||
}
|
||||
|
||||
static int psbfb_probe(struct drm_fb_helper *helper,
|
||||
struct drm_fb_helper_surface_size *sizes)
|
||||
{
|
||||
struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
|
||||
int new_fb = 0;
|
||||
int ret;
|
||||
|
||||
if (!helper->fb) {
|
||||
ret = psbfb_create(psb_fbdev, sizes);
|
||||
if (ret)
|
||||
return ret;
|
||||
new_fb = 1;
|
||||
}
|
||||
return new_fb;
|
||||
}
|
||||
|
||||
struct drm_fb_helper_funcs psb_fb_helper_funcs = {
|
||||
.gamma_set = psbfb_gamma_set,
|
||||
.gamma_get = psbfb_gamma_get,
|
||||
.fb_probe = psbfb_probe,
|
||||
};
|
||||
|
||||
int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
|
||||
{
|
||||
struct fb_info *info;
|
||||
struct psb_framebuffer *psbfb = &fbdev->pfb;
|
||||
|
||||
if (fbdev->psb_fb_helper.fbdev) {
|
||||
info = fbdev->psb_fb_helper.fbdev;
|
||||
|
||||
/* If this is our base framebuffer then kill any virtual map
|
||||
for the framebuffer layer and unpin it */
|
||||
if (psbfb->vm_map) {
|
||||
vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
|
||||
psb_gtt_unpin(psbfb->gtt);
|
||||
}
|
||||
unregister_framebuffer(info);
|
||||
if (info->cmap.len)
|
||||
fb_dealloc_cmap(&info->cmap);
|
||||
framebuffer_release(info);
|
||||
}
|
||||
drm_fb_helper_fini(&fbdev->psb_fb_helper);
|
||||
drm_framebuffer_cleanup(&psbfb->base);
|
||||
|
||||
if (psbfb->gtt)
|
||||
drm_gem_object_unreference(&psbfb->gtt->gem);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int psb_fbdev_init(struct drm_device *dev)
|
||||
{
|
||||
struct psb_fbdev *fbdev;
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
|
||||
fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
|
||||
if (!fbdev) {
|
||||
dev_err(dev->dev, "no memory\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
dev_priv->fbdev = fbdev;
|
||||
fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
|
||||
|
||||
drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
|
||||
INTELFB_CONN_LIMIT);
|
||||
|
||||
drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
|
||||
drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void psb_fbdev_fini(struct drm_device *dev)
|
||||
{
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
|
||||
if (!dev_priv->fbdev)
|
||||
return;
|
||||
|
||||
psb_fbdev_destroy(dev, dev_priv->fbdev);
|
||||
kfree(dev_priv->fbdev);
|
||||
dev_priv->fbdev = NULL;
|
||||
}
|
||||
|
||||
static void psbfb_output_poll_changed(struct drm_device *dev)
|
||||
{
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
|
||||
drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
|
||||
}
|
||||
|
||||
/**
|
||||
* psb_user_framebuffer_create_handle - add hamdle to a framebuffer
|
||||
* @fb: framebuffer
|
||||
* @file_priv: our DRM file
|
||||
* @handle: returned handle
|
||||
*
|
||||
* Our framebuffer object is a GTT range which also contains a GEM
|
||||
* object. We need to turn it into a handle for userspace. GEM will do
|
||||
* the work for us
|
||||
*/
|
||||
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
|
||||
struct drm_file *file_priv,
|
||||
unsigned int *handle)
|
||||
{
|
||||
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
||||
struct gtt_range *r = psbfb->gtt;
|
||||
return drm_gem_handle_create(file_priv, &r->gem, handle);
|
||||
}
|
||||
|
||||
/**
|
||||
* psb_user_framebuffer_destroy - destruct user created fb
|
||||
* @fb: framebuffer
|
||||
*
|
||||
* User framebuffers are backed by GEM objects so all we have to do is
|
||||
* clean up a bit and drop the reference, GEM will handle the fallout
|
||||
*/
|
||||
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
|
||||
{
|
||||
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
||||
struct gtt_range *r = psbfb->gtt;
|
||||
struct drm_device *dev = fb->dev;
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct psb_fbdev *fbdev = dev_priv->fbdev;
|
||||
struct drm_crtc *crtc;
|
||||
int reset = 0;
|
||||
|
||||
/* Should never get stolen memory for a user fb */
|
||||
WARN_ON(r->stolen);
|
||||
|
||||
/* Check if we are erroneously live */
|
||||
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
|
||||
if (crtc->fb == fb)
|
||||
reset = 1;
|
||||
|
||||
if (reset)
|
||||
/*
|
||||
* Now force a sane response before we permit the DRM CRTC
|
||||
* layer to do stupid things like blank the display. Instead
|
||||
* we reset this framebuffer as if the user had forced a reset.
|
||||
* We must do this before the cleanup so that the DRM layer
|
||||
* doesn't get a chance to stick its oar in where it isn't
|
||||
* wanted.
|
||||
*/
|
||||
drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
|
||||
|
||||
/* Let DRM do its clean up */
|
||||
drm_framebuffer_cleanup(fb);
|
||||
/* We are no longer using the resource in GEM */
|
||||
drm_gem_object_unreference_unlocked(&r->gem);
|
||||
kfree(fb);
|
||||
}
|
||||
|
||||
static const struct drm_mode_config_funcs psb_mode_funcs = {
|
||||
.fb_create = psb_user_framebuffer_create,
|
||||
.output_poll_changed = psbfb_output_poll_changed,
|
||||
};
|
||||
|
||||
static int psb_create_backlight_property(struct drm_device *dev)
|
||||
{
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct drm_property *backlight;
|
||||
|
||||
if (dev_priv->backlight_property)
|
||||
return 0;
|
||||
|
||||
backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE,
|
||||
"backlight", 2);
|
||||
backlight->values[0] = 0;
|
||||
backlight->values[1] = 100;
|
||||
|
||||
dev_priv->backlight_property = backlight;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void psb_setup_outputs(struct drm_device *dev)
|
||||
{
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct drm_connector *connector;
|
||||
|
||||
drm_mode_create_scaling_mode_property(dev);
|
||||
psb_create_backlight_property(dev);
|
||||
|
||||
dev_priv->ops->output_init(dev);
|
||||
|
||||
list_for_each_entry(connector, &dev->mode_config.connector_list,
|
||||
head) {
|
||||
struct psb_intel_output *psb_intel_output =
|
||||
to_psb_intel_output(connector);
|
||||
struct drm_encoder *encoder = &psb_intel_output->enc;
|
||||
int crtc_mask = 0, clone_mask = 0;
|
||||
|
||||
/* valid crtcs */
|
||||
switch (psb_intel_output->type) {
|
||||
case INTEL_OUTPUT_ANALOG:
|
||||
crtc_mask = (1 << 0);
|
||||
clone_mask = (1 << INTEL_OUTPUT_ANALOG);
|
||||
break;
|
||||
case INTEL_OUTPUT_SDVO:
|
||||
crtc_mask = ((1 << 0) | (1 << 1));
|
||||
clone_mask = (1 << INTEL_OUTPUT_SDVO);
|
||||
break;
|
||||
case INTEL_OUTPUT_LVDS:
|
||||
if (IS_MRST(dev))
|
||||
crtc_mask = (1 << 0);
|
||||
else
|
||||
crtc_mask = (1 << 1);
|
||||
clone_mask = (1 << INTEL_OUTPUT_LVDS);
|
||||
break;
|
||||
case INTEL_OUTPUT_MIPI:
|
||||
crtc_mask = (1 << 0);
|
||||
clone_mask = (1 << INTEL_OUTPUT_MIPI);
|
||||
break;
|
||||
case INTEL_OUTPUT_MIPI2:
|
||||
crtc_mask = (1 << 2);
|
||||
clone_mask = (1 << INTEL_OUTPUT_MIPI2);
|
||||
break;
|
||||
case INTEL_OUTPUT_HDMI:
|
||||
if (IS_MFLD(dev))
|
||||
crtc_mask = (1 << 1);
|
||||
else
|
||||
crtc_mask = (1 << 0);
|
||||
clone_mask = (1 << INTEL_OUTPUT_HDMI);
|
||||
break;
|
||||
}
|
||||
encoder->possible_crtcs = crtc_mask;
|
||||
encoder->possible_clones =
|
||||
psb_intel_connector_clones(dev, clone_mask);
|
||||
}
|
||||
}
|
||||
|
||||
void psb_modeset_init(struct drm_device *dev)
|
||||
{
|
||||
struct drm_psb_private *dev_priv = dev->dev_private;
|
||||
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
|
||||
int i;
|
||||
|
||||
drm_mode_config_init(dev);
|
||||
|
||||
dev->mode_config.min_width = 0;
|
||||
dev->mode_config.min_height = 0;
|
||||
|
||||
dev->mode_config.funcs = (void *) &psb_mode_funcs;
|
||||
|
||||
/* set memory base */
|
||||
/* MRST and PSB should use BAR 2*/
|
||||
pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
|
||||
&(dev->mode_config.fb_base));
|
||||
|
||||
/* num pipes is 2 for PSB but 1 for Mrst */
|
||||
for (i = 0; i < dev_priv->num_pipe; i++)
|
||||
psb_intel_crtc_init(dev, i, mode_dev);
|
||||
|
||||
dev->mode_config.max_width = 2048;
|
||||
dev->mode_config.max_height = 2048;
|
||||
|
||||
psb_setup_outputs(dev);
|
||||
}
|
||||
|
||||
void psb_modeset_cleanup(struct drm_device *dev)
|
||||
{
|
||||
mutex_lock(&dev->struct_mutex);
|
||||
|
||||
drm_kms_helper_poll_fini(dev);
|
||||
psb_fbdev_fini(dev);
|
||||
drm_mode_config_cleanup(dev);
|
||||
|
||||
mutex_unlock(&dev->struct_mutex);
|
||||
}
|
48
drivers/gpu/drm/gma500/framebuffer.h
Normal file
48
drivers/gpu/drm/gma500/framebuffer.h
Normal file
@ -0,0 +1,48 @@
|
||||
/*
|
||||
* Copyright (c) 2008-2011, Intel Corporation
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* Authors:
|
||||
* Eric Anholt <eric@anholt.net>
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _FRAMEBUFFER_H_
|
||||
#define _FRAMEBUFFER_H_
|
||||
|
||||
#include <drm/drmP.h>
|
||||
#include <drm/drm_fb_helper.h>
|
||||
|
||||
#include "psb_drv.h"
|
||||
|
||||
struct psb_framebuffer {
|
||||
struct drm_framebuffer base;
|
||||
struct address_space *addr_space;
|
||||
struct fb_info *fbdev;
|
||||
struct gtt_range *gtt;
|
||||
bool vm_map; /* True if we must undo a vm_map_ram */
|
||||
};
|
||||
|
||||
struct psb_fbdev {
|
||||
struct drm_fb_helper psb_fb_helper;
|
||||
struct psb_framebuffer pfb;
|
||||
};
|
||||
|
||||
#define to_psb_fb(x) container_of(x, struct psb_framebuffer, base)
|
||||
|
||||
extern int psb_intel_connector_clones(struct drm_device *dev, int type_mask);
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user