![Daniel Vetter](/assets/img/avatar_default.png)
Less yelling ftw! Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
938 lines
24 KiB
C
938 lines
24 KiB
C
/* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*-
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* Created: Wed Apr 5 19:24:19 2000 by kevin@precisioninsight.com
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*/
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/*
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* Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Gareth Hughes <gareth@valinux.com>
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*/
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#include <linux/firmware.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <drm/drmP.h>
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#include <drm/r128_drm.h>
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#include "r128_drv.h"
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#define R128_FIFO_DEBUG 0
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#define FIRMWARE_NAME "r128/r128_cce.bin"
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MODULE_FIRMWARE(FIRMWARE_NAME);
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static int R128_READ_PLL(struct drm_device *dev, int addr)
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{
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drm_r128_private_t *dev_priv = dev->dev_private;
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R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f);
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return R128_READ(R128_CLOCK_CNTL_DATA);
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}
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#if R128_FIFO_DEBUG
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static void r128_status(drm_r128_private_t *dev_priv)
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{
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printk("GUI_STAT = 0x%08x\n",
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(unsigned int)R128_READ(R128_GUI_STAT));
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printk("PM4_STAT = 0x%08x\n",
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(unsigned int)R128_READ(R128_PM4_STAT));
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printk("PM4_BUFFER_DL_WPTR = 0x%08x\n",
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(unsigned int)R128_READ(R128_PM4_BUFFER_DL_WPTR));
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printk("PM4_BUFFER_DL_RPTR = 0x%08x\n",
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(unsigned int)R128_READ(R128_PM4_BUFFER_DL_RPTR));
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printk("PM4_MICRO_CNTL = 0x%08x\n",
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(unsigned int)R128_READ(R128_PM4_MICRO_CNTL));
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printk("PM4_BUFFER_CNTL = 0x%08x\n",
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(unsigned int)R128_READ(R128_PM4_BUFFER_CNTL));
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}
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#endif
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/* ================================================================
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* Engine, FIFO control
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*/
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static int r128_do_pixcache_flush(drm_r128_private_t *dev_priv)
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{
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u32 tmp;
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int i;
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tmp = R128_READ(R128_PC_NGUI_CTLSTAT) | R128_PC_FLUSH_ALL;
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R128_WRITE(R128_PC_NGUI_CTLSTAT, tmp);
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for (i = 0; i < dev_priv->usec_timeout; i++) {
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if (!(R128_READ(R128_PC_NGUI_CTLSTAT) & R128_PC_BUSY))
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return 0;
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DRM_UDELAY(1);
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}
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#if R128_FIFO_DEBUG
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DRM_ERROR("failed!\n");
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#endif
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return -EBUSY;
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}
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static int r128_do_wait_for_fifo(drm_r128_private_t *dev_priv, int entries)
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{
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int i;
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for (i = 0; i < dev_priv->usec_timeout; i++) {
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int slots = R128_READ(R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK;
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if (slots >= entries)
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return 0;
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DRM_UDELAY(1);
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}
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#if R128_FIFO_DEBUG
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DRM_ERROR("failed!\n");
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#endif
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return -EBUSY;
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}
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static int r128_do_wait_for_idle(drm_r128_private_t *dev_priv)
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{
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int i, ret;
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ret = r128_do_wait_for_fifo(dev_priv, 64);
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if (ret)
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return ret;
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for (i = 0; i < dev_priv->usec_timeout; i++) {
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if (!(R128_READ(R128_GUI_STAT) & R128_GUI_ACTIVE)) {
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r128_do_pixcache_flush(dev_priv);
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return 0;
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}
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DRM_UDELAY(1);
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}
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#if R128_FIFO_DEBUG
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DRM_ERROR("failed!\n");
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#endif
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return -EBUSY;
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}
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/* ================================================================
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* CCE control, initialization
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*/
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/* Load the microcode for the CCE */
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static int r128_cce_load_microcode(drm_r128_private_t *dev_priv)
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{
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struct platform_device *pdev;
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const struct firmware *fw;
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const __be32 *fw_data;
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int rc, i;
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DRM_DEBUG("\n");
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pdev = platform_device_register_simple("r128_cce", 0, NULL, 0);
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if (IS_ERR(pdev)) {
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printk(KERN_ERR "r128_cce: Failed to register firmware\n");
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return PTR_ERR(pdev);
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}
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rc = request_firmware(&fw, FIRMWARE_NAME, &pdev->dev);
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platform_device_unregister(pdev);
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if (rc) {
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printk(KERN_ERR "r128_cce: Failed to load firmware \"%s\"\n",
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FIRMWARE_NAME);
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return rc;
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}
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if (fw->size != 256 * 8) {
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printk(KERN_ERR
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"r128_cce: Bogus length %zu in firmware \"%s\"\n",
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fw->size, FIRMWARE_NAME);
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rc = -EINVAL;
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goto out_release;
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}
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r128_do_wait_for_idle(dev_priv);
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fw_data = (const __be32 *)fw->data;
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R128_WRITE(R128_PM4_MICROCODE_ADDR, 0);
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for (i = 0; i < 256; i++) {
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R128_WRITE(R128_PM4_MICROCODE_DATAH,
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be32_to_cpup(&fw_data[i * 2]));
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R128_WRITE(R128_PM4_MICROCODE_DATAL,
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be32_to_cpup(&fw_data[i * 2 + 1]));
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}
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out_release:
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release_firmware(fw);
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return rc;
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}
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/* Flush any pending commands to the CCE. This should only be used just
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* prior to a wait for idle, as it informs the engine that the command
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* stream is ending.
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*/
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static void r128_do_cce_flush(drm_r128_private_t *dev_priv)
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{
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u32 tmp;
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tmp = R128_READ(R128_PM4_BUFFER_DL_WPTR) | R128_PM4_BUFFER_DL_DONE;
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R128_WRITE(R128_PM4_BUFFER_DL_WPTR, tmp);
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}
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/* Wait for the CCE to go idle.
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*/
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int r128_do_cce_idle(drm_r128_private_t *dev_priv)
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{
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int i;
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for (i = 0; i < dev_priv->usec_timeout; i++) {
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if (GET_RING_HEAD(dev_priv) == dev_priv->ring.tail) {
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int pm4stat = R128_READ(R128_PM4_STAT);
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if (((pm4stat & R128_PM4_FIFOCNT_MASK) >=
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dev_priv->cce_fifo_size) &&
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!(pm4stat & (R128_PM4_BUSY |
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R128_PM4_GUI_ACTIVE))) {
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return r128_do_pixcache_flush(dev_priv);
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}
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}
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DRM_UDELAY(1);
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}
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#if R128_FIFO_DEBUG
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DRM_ERROR("failed!\n");
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r128_status(dev_priv);
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#endif
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return -EBUSY;
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}
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/* Start the Concurrent Command Engine.
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*/
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static void r128_do_cce_start(drm_r128_private_t *dev_priv)
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{
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r128_do_wait_for_idle(dev_priv);
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R128_WRITE(R128_PM4_BUFFER_CNTL,
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dev_priv->cce_mode | dev_priv->ring.size_l2qw
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| R128_PM4_BUFFER_CNTL_NOUPDATE);
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R128_READ(R128_PM4_BUFFER_ADDR); /* as per the sample code */
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R128_WRITE(R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN);
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dev_priv->cce_running = 1;
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}
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/* Reset the Concurrent Command Engine. This will not flush any pending
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* commands, so you must wait for the CCE command stream to complete
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* before calling this routine.
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*/
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static void r128_do_cce_reset(drm_r128_private_t *dev_priv)
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{
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R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0);
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R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0);
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dev_priv->ring.tail = 0;
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}
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/* Stop the Concurrent Command Engine. This will not flush any pending
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* commands, so you must flush the command stream and wait for the CCE
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* to go idle before calling this routine.
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*/
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static void r128_do_cce_stop(drm_r128_private_t *dev_priv)
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{
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R128_WRITE(R128_PM4_MICRO_CNTL, 0);
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R128_WRITE(R128_PM4_BUFFER_CNTL,
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R128_PM4_NONPM4 | R128_PM4_BUFFER_CNTL_NOUPDATE);
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dev_priv->cce_running = 0;
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}
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/* Reset the engine. This will stop the CCE if it is running.
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*/
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static int r128_do_engine_reset(struct drm_device *dev)
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{
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drm_r128_private_t *dev_priv = dev->dev_private;
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u32 clock_cntl_index, mclk_cntl, gen_reset_cntl;
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r128_do_pixcache_flush(dev_priv);
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clock_cntl_index = R128_READ(R128_CLOCK_CNTL_INDEX);
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mclk_cntl = R128_READ_PLL(dev, R128_MCLK_CNTL);
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R128_WRITE_PLL(R128_MCLK_CNTL,
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mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP);
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gen_reset_cntl = R128_READ(R128_GEN_RESET_CNTL);
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/* Taken from the sample code - do not change */
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R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl | R128_SOFT_RESET_GUI);
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R128_READ(R128_GEN_RESET_CNTL);
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R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl & ~R128_SOFT_RESET_GUI);
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R128_READ(R128_GEN_RESET_CNTL);
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R128_WRITE_PLL(R128_MCLK_CNTL, mclk_cntl);
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R128_WRITE(R128_CLOCK_CNTL_INDEX, clock_cntl_index);
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R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl);
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/* Reset the CCE ring */
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r128_do_cce_reset(dev_priv);
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/* The CCE is no longer running after an engine reset */
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dev_priv->cce_running = 0;
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/* Reset any pending vertex, indirect buffers */
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r128_freelist_reset(dev);
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return 0;
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}
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static void r128_cce_init_ring_buffer(struct drm_device *dev,
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drm_r128_private_t *dev_priv)
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{
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u32 ring_start;
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u32 tmp;
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DRM_DEBUG("\n");
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/* The manual (p. 2) says this address is in "VM space". This
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* means it's an offset from the start of AGP space.
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*/
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#if __OS_HAS_AGP
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if (!dev_priv->is_pci)
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ring_start = dev_priv->cce_ring->offset - dev->agp->base;
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else
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#endif
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ring_start = dev_priv->cce_ring->offset -
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(unsigned long)dev->sg->virtual;
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R128_WRITE(R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET);
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R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0);
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R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0);
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/* Set watermark control */
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R128_WRITE(R128_PM4_BUFFER_WM_CNTL,
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((R128_WATERMARK_L / 4) << R128_WMA_SHIFT)
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| ((R128_WATERMARK_M / 4) << R128_WMB_SHIFT)
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| ((R128_WATERMARK_N / 4) << R128_WMC_SHIFT)
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| ((R128_WATERMARK_K / 64) << R128_WB_WM_SHIFT));
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/* Force read. Why? Because it's in the examples... */
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R128_READ(R128_PM4_BUFFER_ADDR);
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/* Turn on bus mastering */
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tmp = R128_READ(R128_BUS_CNTL) & ~R128_BUS_MASTER_DIS;
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R128_WRITE(R128_BUS_CNTL, tmp);
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}
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static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init)
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{
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drm_r128_private_t *dev_priv;
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int rc;
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DRM_DEBUG("\n");
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if (dev->dev_private) {
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DRM_DEBUG("called when already initialized\n");
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return -EINVAL;
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}
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dev_priv = kzalloc(sizeof(drm_r128_private_t), GFP_KERNEL);
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if (dev_priv == NULL)
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return -ENOMEM;
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dev_priv->is_pci = init->is_pci;
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if (dev_priv->is_pci && !dev->sg) {
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DRM_ERROR("PCI GART memory not allocated!\n");
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dev->dev_private = (void *)dev_priv;
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r128_do_cleanup_cce(dev);
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return -EINVAL;
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}
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dev_priv->usec_timeout = init->usec_timeout;
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if (dev_priv->usec_timeout < 1 ||
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dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT) {
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DRM_DEBUG("TIMEOUT problem!\n");
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dev->dev_private = (void *)dev_priv;
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r128_do_cleanup_cce(dev);
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return -EINVAL;
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}
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dev_priv->cce_mode = init->cce_mode;
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/* GH: Simple idle check.
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*/
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atomic_set(&dev_priv->idle_count, 0);
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/* We don't support anything other than bus-mastering ring mode,
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* but the ring can be in either AGP or PCI space for the ring
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* read pointer.
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*/
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if ((init->cce_mode != R128_PM4_192BM) &&
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(init->cce_mode != R128_PM4_128BM_64INDBM) &&
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(init->cce_mode != R128_PM4_64BM_128INDBM) &&
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(init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM)) {
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DRM_DEBUG("Bad cce_mode!\n");
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dev->dev_private = (void *)dev_priv;
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r128_do_cleanup_cce(dev);
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return -EINVAL;
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}
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switch (init->cce_mode) {
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case R128_PM4_NONPM4:
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dev_priv->cce_fifo_size = 0;
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break;
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case R128_PM4_192PIO:
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case R128_PM4_192BM:
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dev_priv->cce_fifo_size = 192;
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break;
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case R128_PM4_128PIO_64INDBM:
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case R128_PM4_128BM_64INDBM:
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dev_priv->cce_fifo_size = 128;
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break;
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case R128_PM4_64PIO_128INDBM:
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case R128_PM4_64BM_128INDBM:
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case R128_PM4_64PIO_64VCBM_64INDBM:
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case R128_PM4_64BM_64VCBM_64INDBM:
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case R128_PM4_64PIO_64VCPIO_64INDPIO:
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dev_priv->cce_fifo_size = 64;
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break;
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}
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switch (init->fb_bpp) {
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case 16:
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dev_priv->color_fmt = R128_DATATYPE_RGB565;
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break;
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case 32:
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default:
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dev_priv->color_fmt = R128_DATATYPE_ARGB8888;
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break;
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}
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dev_priv->front_offset = init->front_offset;
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dev_priv->front_pitch = init->front_pitch;
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dev_priv->back_offset = init->back_offset;
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dev_priv->back_pitch = init->back_pitch;
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switch (init->depth_bpp) {
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case 16:
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dev_priv->depth_fmt = R128_DATATYPE_RGB565;
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break;
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case 24:
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case 32:
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default:
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dev_priv->depth_fmt = R128_DATATYPE_ARGB8888;
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break;
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}
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dev_priv->depth_offset = init->depth_offset;
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dev_priv->depth_pitch = init->depth_pitch;
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dev_priv->span_offset = init->span_offset;
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dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch / 8) << 21) |
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(dev_priv->front_offset >> 5));
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dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch / 8) << 21) |
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(dev_priv->back_offset >> 5));
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dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) |
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(dev_priv->depth_offset >> 5) |
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R128_DST_TILE);
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dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) |
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(dev_priv->span_offset >> 5));
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dev_priv->sarea = drm_getsarea(dev);
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if (!dev_priv->sarea) {
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DRM_ERROR("could not find sarea!\n");
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dev->dev_private = (void *)dev_priv;
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r128_do_cleanup_cce(dev);
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return -EINVAL;
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}
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dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset);
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if (!dev_priv->mmio) {
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DRM_ERROR("could not find mmio region!\n");
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dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -EINVAL;
|
|
}
|
|
dev_priv->cce_ring = drm_core_findmap(dev, init->ring_offset);
|
|
if (!dev_priv->cce_ring) {
|
|
DRM_ERROR("could not find cce ring region!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -EINVAL;
|
|
}
|
|
dev_priv->ring_rptr = drm_core_findmap(dev, init->ring_rptr_offset);
|
|
if (!dev_priv->ring_rptr) {
|
|
DRM_ERROR("could not find ring read pointer!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -EINVAL;
|
|
}
|
|
dev->agp_buffer_token = init->buffers_offset;
|
|
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
|
|
if (!dev->agp_buffer_map) {
|
|
DRM_ERROR("could not find dma buffer region!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!dev_priv->is_pci) {
|
|
dev_priv->agp_textures =
|
|
drm_core_findmap(dev, init->agp_textures_offset);
|
|
if (!dev_priv->agp_textures) {
|
|
DRM_ERROR("could not find agp texture region!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
dev_priv->sarea_priv =
|
|
(drm_r128_sarea_t *) ((u8 *) dev_priv->sarea->handle +
|
|
init->sarea_priv_offset);
|
|
|
|
#if __OS_HAS_AGP
|
|
if (!dev_priv->is_pci) {
|
|
drm_core_ioremap_wc(dev_priv->cce_ring, dev);
|
|
drm_core_ioremap_wc(dev_priv->ring_rptr, dev);
|
|
drm_core_ioremap_wc(dev->agp_buffer_map, dev);
|
|
if (!dev_priv->cce_ring->handle ||
|
|
!dev_priv->ring_rptr->handle ||
|
|
!dev->agp_buffer_map->handle) {
|
|
DRM_ERROR("Could not ioremap agp regions!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -ENOMEM;
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
dev_priv->cce_ring->handle =
|
|
(void *)(unsigned long)dev_priv->cce_ring->offset;
|
|
dev_priv->ring_rptr->handle =
|
|
(void *)(unsigned long)dev_priv->ring_rptr->offset;
|
|
dev->agp_buffer_map->handle =
|
|
(void *)(unsigned long)dev->agp_buffer_map->offset;
|
|
}
|
|
|
|
#if __OS_HAS_AGP
|
|
if (!dev_priv->is_pci)
|
|
dev_priv->cce_buffers_offset = dev->agp->base;
|
|
else
|
|
#endif
|
|
dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual;
|
|
|
|
dev_priv->ring.start = (u32 *) dev_priv->cce_ring->handle;
|
|
dev_priv->ring.end = ((u32 *) dev_priv->cce_ring->handle
|
|
+ init->ring_size / sizeof(u32));
|
|
dev_priv->ring.size = init->ring_size;
|
|
dev_priv->ring.size_l2qw = order_base_2(init->ring_size / 8);
|
|
|
|
dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1;
|
|
|
|
dev_priv->ring.high_mark = 128;
|
|
|
|
dev_priv->sarea_priv->last_frame = 0;
|
|
R128_WRITE(R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame);
|
|
|
|
dev_priv->sarea_priv->last_dispatch = 0;
|
|
R128_WRITE(R128_LAST_DISPATCH_REG, dev_priv->sarea_priv->last_dispatch);
|
|
|
|
#if __OS_HAS_AGP
|
|
if (dev_priv->is_pci) {
|
|
#endif
|
|
dev_priv->gart_info.table_mask = DMA_BIT_MASK(32);
|
|
dev_priv->gart_info.gart_table_location = DRM_ATI_GART_MAIN;
|
|
dev_priv->gart_info.table_size = R128_PCIGART_TABLE_SIZE;
|
|
dev_priv->gart_info.addr = NULL;
|
|
dev_priv->gart_info.bus_addr = 0;
|
|
dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
|
|
if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) {
|
|
DRM_ERROR("failed to init PCI GART!\n");
|
|
dev->dev_private = (void *)dev_priv;
|
|
r128_do_cleanup_cce(dev);
|
|
return -ENOMEM;
|
|
}
|
|
R128_WRITE(R128_PCI_GART_PAGE, dev_priv->gart_info.bus_addr);
|
|
#if __OS_HAS_AGP
|
|
}
|
|
#endif
|
|
|
|
r128_cce_init_ring_buffer(dev, dev_priv);
|
|
rc = r128_cce_load_microcode(dev_priv);
|
|
|
|
dev->dev_private = (void *)dev_priv;
|
|
|
|
r128_do_engine_reset(dev);
|
|
|
|
if (rc) {
|
|
DRM_ERROR("Failed to load firmware!\n");
|
|
r128_do_cleanup_cce(dev);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int r128_do_cleanup_cce(struct drm_device *dev)
|
|
{
|
|
|
|
/* Make sure interrupts are disabled here because the uninstall ioctl
|
|
* may not have been called from userspace and after dev_private
|
|
* is freed, it's too late.
|
|
*/
|
|
if (dev->irq_enabled)
|
|
drm_irq_uninstall(dev);
|
|
|
|
if (dev->dev_private) {
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
|
|
#if __OS_HAS_AGP
|
|
if (!dev_priv->is_pci) {
|
|
if (dev_priv->cce_ring != NULL)
|
|
drm_core_ioremapfree(dev_priv->cce_ring, dev);
|
|
if (dev_priv->ring_rptr != NULL)
|
|
drm_core_ioremapfree(dev_priv->ring_rptr, dev);
|
|
if (dev->agp_buffer_map != NULL) {
|
|
drm_core_ioremapfree(dev->agp_buffer_map, dev);
|
|
dev->agp_buffer_map = NULL;
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
if (dev_priv->gart_info.bus_addr)
|
|
if (!drm_ati_pcigart_cleanup(dev,
|
|
&dev_priv->gart_info))
|
|
DRM_ERROR
|
|
("failed to cleanup PCI GART!\n");
|
|
}
|
|
|
|
kfree(dev->dev_private);
|
|
dev->dev_private = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
drm_r128_init_t *init = data;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
switch (init->func) {
|
|
case R128_INIT_CCE:
|
|
return r128_do_init_cce(dev, init);
|
|
case R128_CLEANUP_CCE:
|
|
return r128_do_cleanup_cce(dev);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
DEV_INIT_TEST_WITH_RETURN(dev_priv);
|
|
|
|
if (dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4) {
|
|
DRM_DEBUG("while CCE running\n");
|
|
return 0;
|
|
}
|
|
|
|
r128_do_cce_start(dev_priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Stop the CCE. The engine must have been idled before calling this
|
|
* routine.
|
|
*/
|
|
int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
drm_r128_cce_stop_t *stop = data;
|
|
int ret;
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
DEV_INIT_TEST_WITH_RETURN(dev_priv);
|
|
|
|
/* Flush any pending CCE commands. This ensures any outstanding
|
|
* commands are exectuted by the engine before we turn it off.
|
|
*/
|
|
if (stop->flush)
|
|
r128_do_cce_flush(dev_priv);
|
|
|
|
/* If we fail to make the engine go idle, we return an error
|
|
* code so that the DRM ioctl wrapper can try again.
|
|
*/
|
|
if (stop->idle) {
|
|
ret = r128_do_cce_idle(dev_priv);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* Finally, we can turn off the CCE. If the engine isn't idle,
|
|
* we will get some dropped triangles as they won't be fully
|
|
* rendered before the CCE is shut down.
|
|
*/
|
|
r128_do_cce_stop(dev_priv);
|
|
|
|
/* Reset the engine */
|
|
r128_do_engine_reset(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Just reset the CCE ring. Called as part of an X Server engine reset.
|
|
*/
|
|
int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
DEV_INIT_TEST_WITH_RETURN(dev_priv);
|
|
|
|
r128_do_cce_reset(dev_priv);
|
|
|
|
/* The CCE is no longer running after an engine reset */
|
|
dev_priv->cce_running = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
DEV_INIT_TEST_WITH_RETURN(dev_priv);
|
|
|
|
if (dev_priv->cce_running)
|
|
r128_do_cce_flush(dev_priv);
|
|
|
|
return r128_do_cce_idle(dev_priv);
|
|
}
|
|
|
|
int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
DRM_DEBUG("\n");
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
DEV_INIT_TEST_WITH_RETURN(dev->dev_private);
|
|
|
|
return r128_do_engine_reset(dev);
|
|
}
|
|
|
|
int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* ================================================================
|
|
* Freelist management
|
|
*/
|
|
#define R128_BUFFER_USED 0xffffffff
|
|
#define R128_BUFFER_FREE 0
|
|
|
|
#if 0
|
|
static int r128_freelist_init(struct drm_device *dev)
|
|
{
|
|
struct drm_device_dma *dma = dev->dma;
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
struct drm_buf *buf;
|
|
drm_r128_buf_priv_t *buf_priv;
|
|
drm_r128_freelist_t *entry;
|
|
int i;
|
|
|
|
dev_priv->head = kzalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL);
|
|
if (dev_priv->head == NULL)
|
|
return -ENOMEM;
|
|
|
|
dev_priv->head->age = R128_BUFFER_USED;
|
|
|
|
for (i = 0; i < dma->buf_count; i++) {
|
|
buf = dma->buflist[i];
|
|
buf_priv = buf->dev_private;
|
|
|
|
entry = kmalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
entry->age = R128_BUFFER_FREE;
|
|
entry->buf = buf;
|
|
entry->prev = dev_priv->head;
|
|
entry->next = dev_priv->head->next;
|
|
if (!entry->next)
|
|
dev_priv->tail = entry;
|
|
|
|
buf_priv->discard = 0;
|
|
buf_priv->dispatched = 0;
|
|
buf_priv->list_entry = entry;
|
|
|
|
dev_priv->head->next = entry;
|
|
|
|
if (dev_priv->head->next)
|
|
dev_priv->head->next->prev = entry;
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
#endif
|
|
|
|
static struct drm_buf *r128_freelist_get(struct drm_device * dev)
|
|
{
|
|
struct drm_device_dma *dma = dev->dma;
|
|
drm_r128_private_t *dev_priv = dev->dev_private;
|
|
drm_r128_buf_priv_t *buf_priv;
|
|
struct drm_buf *buf;
|
|
int i, t;
|
|
|
|
/* FIXME: Optimize -- use freelist code */
|
|
|
|
for (i = 0; i < dma->buf_count; i++) {
|
|
buf = dma->buflist[i];
|
|
buf_priv = buf->dev_private;
|
|
if (!buf->file_priv)
|
|
return buf;
|
|
}
|
|
|
|
for (t = 0; t < dev_priv->usec_timeout; t++) {
|
|
u32 done_age = R128_READ(R128_LAST_DISPATCH_REG);
|
|
|
|
for (i = 0; i < dma->buf_count; i++) {
|
|
buf = dma->buflist[i];
|
|
buf_priv = buf->dev_private;
|
|
if (buf->pending && buf_priv->age <= done_age) {
|
|
/* The buffer has been processed, so it
|
|
* can now be used.
|
|
*/
|
|
buf->pending = 0;
|
|
return buf;
|
|
}
|
|
}
|
|
DRM_UDELAY(1);
|
|
}
|
|
|
|
DRM_DEBUG("returning NULL!\n");
|
|
return NULL;
|
|
}
|
|
|
|
void r128_freelist_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_device_dma *dma = dev->dma;
|
|
int i;
|
|
|
|
for (i = 0; i < dma->buf_count; i++) {
|
|
struct drm_buf *buf = dma->buflist[i];
|
|
drm_r128_buf_priv_t *buf_priv = buf->dev_private;
|
|
buf_priv->age = 0;
|
|
}
|
|
}
|
|
|
|
/* ================================================================
|
|
* CCE command submission
|
|
*/
|
|
|
|
int r128_wait_ring(drm_r128_private_t *dev_priv, int n)
|
|
{
|
|
drm_r128_ring_buffer_t *ring = &dev_priv->ring;
|
|
int i;
|
|
|
|
for (i = 0; i < dev_priv->usec_timeout; i++) {
|
|
r128_update_ring_snapshot(dev_priv);
|
|
if (ring->space >= n)
|
|
return 0;
|
|
DRM_UDELAY(1);
|
|
}
|
|
|
|
/* FIXME: This is being ignored... */
|
|
DRM_ERROR("failed!\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
static int r128_cce_get_buffers(struct drm_device *dev,
|
|
struct drm_file *file_priv,
|
|
struct drm_dma *d)
|
|
{
|
|
int i;
|
|
struct drm_buf *buf;
|
|
|
|
for (i = d->granted_count; i < d->request_count; i++) {
|
|
buf = r128_freelist_get(dev);
|
|
if (!buf)
|
|
return -EAGAIN;
|
|
|
|
buf->file_priv = file_priv;
|
|
|
|
if (copy_to_user(&d->request_indices[i], &buf->idx,
|
|
sizeof(buf->idx)))
|
|
return -EFAULT;
|
|
if (copy_to_user(&d->request_sizes[i], &buf->total,
|
|
sizeof(buf->total)))
|
|
return -EFAULT;
|
|
|
|
d->granted_count++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_device_dma *dma = dev->dma;
|
|
int ret = 0;
|
|
struct drm_dma *d = data;
|
|
|
|
LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
/* Please don't send us buffers.
|
|
*/
|
|
if (d->send_count != 0) {
|
|
DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
|
|
DRM_CURRENTPID, d->send_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* We'll send you buffers.
|
|
*/
|
|
if (d->request_count < 0 || d->request_count > dma->buf_count) {
|
|
DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
|
|
DRM_CURRENTPID, d->request_count, dma->buf_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
d->granted_count = 0;
|
|
|
|
if (d->request_count)
|
|
ret = r128_cce_get_buffers(dev, file_priv, d);
|
|
|
|
return ret;
|
|
}
|