mirror of https://gitee.com/openkylin/linux.git
1685 lines
44 KiB
C
1685 lines
44 KiB
C
/* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
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*/
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/*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "drm.h"
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#include "drm_crtc_helper.h"
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#include "drm_fb_helper.h"
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#include "intel_drv.h"
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#include "i915_drm.h"
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#include "i915_drv.h"
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#include "i915_trace.h"
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#include <linux/vgaarb.h>
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/* Really want an OS-independent resettable timer. Would like to have
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* this loop run for (eg) 3 sec, but have the timer reset every time
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* the head pointer changes, so that EBUSY only happens if the ring
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* actually stalls for (eg) 3 seconds.
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*/
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int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
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u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
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u32 last_acthd = I915_READ(acthd_reg);
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u32 acthd;
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u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
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int i;
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trace_i915_ring_wait_begin (dev);
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for (i = 0; i < 100000; i++) {
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ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
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acthd = I915_READ(acthd_reg);
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ring->space = ring->head - (ring->tail + 8);
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if (ring->space < 0)
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ring->space += ring->Size;
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if (ring->space >= n) {
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trace_i915_ring_wait_end (dev);
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return 0;
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}
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if (dev->primary->master) {
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struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
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if (master_priv->sarea_priv)
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master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
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}
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if (ring->head != last_head)
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i = 0;
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if (acthd != last_acthd)
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i = 0;
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last_head = ring->head;
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last_acthd = acthd;
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msleep_interruptible(10);
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}
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trace_i915_ring_wait_end (dev);
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return -EBUSY;
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}
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/* As a ringbuffer is only allowed to wrap between instructions, fill
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* the tail with NOOPs.
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*/
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int i915_wrap_ring(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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volatile unsigned int *virt;
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int rem;
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rem = dev_priv->ring.Size - dev_priv->ring.tail;
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if (dev_priv->ring.space < rem) {
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int ret = i915_wait_ring(dev, rem, __func__);
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if (ret)
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return ret;
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}
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dev_priv->ring.space -= rem;
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virt = (unsigned int *)
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(dev_priv->ring.virtual_start + dev_priv->ring.tail);
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rem /= 4;
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while (rem--)
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*virt++ = MI_NOOP;
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dev_priv->ring.tail = 0;
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return 0;
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}
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/**
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* Sets up the hardware status page for devices that need a physical address
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* in the register.
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*/
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static int i915_init_phys_hws(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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/* Program Hardware Status Page */
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dev_priv->status_page_dmah =
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drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
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if (!dev_priv->status_page_dmah) {
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DRM_ERROR("Can not allocate hardware status page\n");
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return -ENOMEM;
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}
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dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
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dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
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memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
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I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
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DRM_DEBUG_DRIVER("Enabled hardware status page\n");
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return 0;
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}
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/**
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* Frees the hardware status page, whether it's a physical address or a virtual
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* address set up by the X Server.
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*/
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static void i915_free_hws(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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if (dev_priv->status_page_dmah) {
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drm_pci_free(dev, dev_priv->status_page_dmah);
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dev_priv->status_page_dmah = NULL;
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}
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if (dev_priv->status_gfx_addr) {
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dev_priv->status_gfx_addr = 0;
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drm_core_ioremapfree(&dev_priv->hws_map, dev);
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}
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/* Need to rewrite hardware status page */
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I915_WRITE(HWS_PGA, 0x1ffff000);
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}
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void i915_kernel_lost_context(struct drm_device * dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_i915_master_private *master_priv;
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drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
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/*
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* We should never lose context on the ring with modesetting
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* as we don't expose it to userspace
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*/
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if (drm_core_check_feature(dev, DRIVER_MODESET))
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return;
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ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
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ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
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ring->space = ring->head - (ring->tail + 8);
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if (ring->space < 0)
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ring->space += ring->Size;
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if (!dev->primary->master)
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return;
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master_priv = dev->primary->master->driver_priv;
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if (ring->head == ring->tail && master_priv->sarea_priv)
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master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
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}
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static int i915_dma_cleanup(struct drm_device * dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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/* Make sure interrupts are disabled here because the uninstall ioctl
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* may not have been called from userspace and after dev_private
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* is freed, it's too late.
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*/
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if (dev->irq_enabled)
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drm_irq_uninstall(dev);
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if (dev_priv->ring.virtual_start) {
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drm_core_ioremapfree(&dev_priv->ring.map, dev);
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dev_priv->ring.virtual_start = NULL;
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dev_priv->ring.map.handle = NULL;
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dev_priv->ring.map.size = 0;
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}
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/* Clear the HWS virtual address at teardown */
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if (I915_NEED_GFX_HWS(dev))
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i915_free_hws(dev);
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return 0;
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}
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static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
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master_priv->sarea = drm_getsarea(dev);
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if (master_priv->sarea) {
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master_priv->sarea_priv = (drm_i915_sarea_t *)
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((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
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} else {
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DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
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}
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if (init->ring_size != 0) {
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if (dev_priv->ring.ring_obj != NULL) {
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i915_dma_cleanup(dev);
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DRM_ERROR("Client tried to initialize ringbuffer in "
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"GEM mode\n");
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return -EINVAL;
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}
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dev_priv->ring.Size = init->ring_size;
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dev_priv->ring.map.offset = init->ring_start;
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dev_priv->ring.map.size = init->ring_size;
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dev_priv->ring.map.type = 0;
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dev_priv->ring.map.flags = 0;
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dev_priv->ring.map.mtrr = 0;
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drm_core_ioremap_wc(&dev_priv->ring.map, dev);
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if (dev_priv->ring.map.handle == NULL) {
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i915_dma_cleanup(dev);
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DRM_ERROR("can not ioremap virtual address for"
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" ring buffer\n");
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return -ENOMEM;
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}
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}
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dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
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dev_priv->cpp = init->cpp;
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dev_priv->back_offset = init->back_offset;
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dev_priv->front_offset = init->front_offset;
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dev_priv->current_page = 0;
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if (master_priv->sarea_priv)
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master_priv->sarea_priv->pf_current_page = 0;
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/* Allow hardware batchbuffers unless told otherwise.
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*/
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dev_priv->allow_batchbuffer = 1;
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return 0;
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}
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static int i915_dma_resume(struct drm_device * dev)
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{
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drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
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DRM_DEBUG_DRIVER("%s\n", __func__);
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if (dev_priv->ring.map.handle == NULL) {
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DRM_ERROR("can not ioremap virtual address for"
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" ring buffer\n");
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return -ENOMEM;
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}
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/* Program Hardware Status Page */
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if (!dev_priv->hw_status_page) {
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DRM_ERROR("Can not find hardware status page\n");
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return -EINVAL;
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}
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DRM_DEBUG_DRIVER("hw status page @ %p\n",
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dev_priv->hw_status_page);
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if (dev_priv->status_gfx_addr != 0)
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I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
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else
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I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
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DRM_DEBUG_DRIVER("Enabled hardware status page\n");
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return 0;
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}
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static int i915_dma_init(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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drm_i915_init_t *init = data;
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int retcode = 0;
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switch (init->func) {
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case I915_INIT_DMA:
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retcode = i915_initialize(dev, init);
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break;
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case I915_CLEANUP_DMA:
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retcode = i915_dma_cleanup(dev);
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break;
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case I915_RESUME_DMA:
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retcode = i915_dma_resume(dev);
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break;
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default:
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retcode = -EINVAL;
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break;
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}
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return retcode;
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}
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/* Implement basically the same security restrictions as hardware does
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* for MI_BATCH_NON_SECURE. These can be made stricter at any time.
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*
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* Most of the calculations below involve calculating the size of a
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* particular instruction. It's important to get the size right as
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* that tells us where the next instruction to check is. Any illegal
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* instruction detected will be given a size of zero, which is a
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* signal to abort the rest of the buffer.
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*/
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static int do_validate_cmd(int cmd)
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{
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switch (((cmd >> 29) & 0x7)) {
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case 0x0:
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switch ((cmd >> 23) & 0x3f) {
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case 0x0:
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return 1; /* MI_NOOP */
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case 0x4:
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return 1; /* MI_FLUSH */
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default:
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return 0; /* disallow everything else */
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}
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break;
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case 0x1:
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return 0; /* reserved */
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case 0x2:
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return (cmd & 0xff) + 2; /* 2d commands */
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case 0x3:
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if (((cmd >> 24) & 0x1f) <= 0x18)
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return 1;
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switch ((cmd >> 24) & 0x1f) {
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case 0x1c:
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return 1;
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case 0x1d:
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switch ((cmd >> 16) & 0xff) {
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case 0x3:
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return (cmd & 0x1f) + 2;
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case 0x4:
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return (cmd & 0xf) + 2;
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default:
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return (cmd & 0xffff) + 2;
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}
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case 0x1e:
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if (cmd & (1 << 23))
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return (cmd & 0xffff) + 1;
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else
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return 1;
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case 0x1f:
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if ((cmd & (1 << 23)) == 0) /* inline vertices */
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return (cmd & 0x1ffff) + 2;
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else if (cmd & (1 << 17)) /* indirect random */
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if ((cmd & 0xffff) == 0)
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return 0; /* unknown length, too hard */
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else
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return (((cmd & 0xffff) + 1) / 2) + 1;
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else
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return 2; /* indirect sequential */
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default:
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return 0;
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}
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default:
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return 0;
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}
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return 0;
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}
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static int validate_cmd(int cmd)
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{
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int ret = do_validate_cmd(cmd);
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/* printk("validate_cmd( %x ): %d\n", cmd, ret); */
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return ret;
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}
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static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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int i;
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RING_LOCALS;
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if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
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return -EINVAL;
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BEGIN_LP_RING((dwords+1)&~1);
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for (i = 0; i < dwords;) {
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int cmd, sz;
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cmd = buffer[i];
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if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
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return -EINVAL;
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OUT_RING(cmd);
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while (++i, --sz) {
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OUT_RING(buffer[i]);
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}
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}
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if (dwords & 1)
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OUT_RING(0);
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ADVANCE_LP_RING();
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return 0;
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}
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int
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i915_emit_box(struct drm_device *dev,
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struct drm_clip_rect *boxes,
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int i, int DR1, int DR4)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_clip_rect box = boxes[i];
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RING_LOCALS;
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if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
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DRM_ERROR("Bad box %d,%d..%d,%d\n",
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box.x1, box.y1, box.x2, box.y2);
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return -EINVAL;
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}
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if (IS_I965G(dev)) {
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BEGIN_LP_RING(4);
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OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
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OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
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OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
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OUT_RING(DR4);
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ADVANCE_LP_RING();
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} else {
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BEGIN_LP_RING(6);
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OUT_RING(GFX_OP_DRAWRECT_INFO);
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OUT_RING(DR1);
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OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
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OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
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OUT_RING(DR4);
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OUT_RING(0);
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ADVANCE_LP_RING();
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}
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return 0;
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}
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/* XXX: Emitting the counter should really be moved to part of the IRQ
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* emit. For now, do it in both places:
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*/
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static void i915_emit_breadcrumb(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
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RING_LOCALS;
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dev_priv->counter++;
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if (dev_priv->counter > 0x7FFFFFFFUL)
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dev_priv->counter = 0;
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if (master_priv->sarea_priv)
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master_priv->sarea_priv->last_enqueue = dev_priv->counter;
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BEGIN_LP_RING(4);
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OUT_RING(MI_STORE_DWORD_INDEX);
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OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
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OUT_RING(dev_priv->counter);
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OUT_RING(0);
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ADVANCE_LP_RING();
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}
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static int i915_dispatch_cmdbuffer(struct drm_device * dev,
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drm_i915_cmdbuffer_t *cmd,
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struct drm_clip_rect *cliprects,
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void *cmdbuf)
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{
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int nbox = cmd->num_cliprects;
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int i = 0, count, ret;
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if (cmd->sz & 0x3) {
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DRM_ERROR("alignment");
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return -EINVAL;
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}
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i915_kernel_lost_context(dev);
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count = nbox ? nbox : 1;
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for (i = 0; i < count; i++) {
|
|
if (i < nbox) {
|
|
ret = i915_emit_box(dev, cliprects, i,
|
|
cmd->DR1, cmd->DR4);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
i915_emit_breadcrumb(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int i915_dispatch_batchbuffer(struct drm_device * dev,
|
|
drm_i915_batchbuffer_t * batch,
|
|
struct drm_clip_rect *cliprects)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
int nbox = batch->num_cliprects;
|
|
int i = 0, count;
|
|
RING_LOCALS;
|
|
|
|
if ((batch->start | batch->used) & 0x7) {
|
|
DRM_ERROR("alignment");
|
|
return -EINVAL;
|
|
}
|
|
|
|
i915_kernel_lost_context(dev);
|
|
|
|
count = nbox ? nbox : 1;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (i < nbox) {
|
|
int ret = i915_emit_box(dev, cliprects, i,
|
|
batch->DR1, batch->DR4);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (!IS_I830(dev) && !IS_845G(dev)) {
|
|
BEGIN_LP_RING(2);
|
|
if (IS_I965G(dev)) {
|
|
OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
|
|
OUT_RING(batch->start);
|
|
} else {
|
|
OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
|
|
OUT_RING(batch->start | MI_BATCH_NON_SECURE);
|
|
}
|
|
ADVANCE_LP_RING();
|
|
} else {
|
|
BEGIN_LP_RING(4);
|
|
OUT_RING(MI_BATCH_BUFFER);
|
|
OUT_RING(batch->start | MI_BATCH_NON_SECURE);
|
|
OUT_RING(batch->start + batch->used - 4);
|
|
OUT_RING(0);
|
|
ADVANCE_LP_RING();
|
|
}
|
|
}
|
|
|
|
i915_emit_breadcrumb(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_dispatch_flip(struct drm_device * dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
struct drm_i915_master_private *master_priv =
|
|
dev->primary->master->driver_priv;
|
|
RING_LOCALS;
|
|
|
|
if (!master_priv->sarea_priv)
|
|
return -EINVAL;
|
|
|
|
DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
|
|
__func__,
|
|
dev_priv->current_page,
|
|
master_priv->sarea_priv->pf_current_page);
|
|
|
|
i915_kernel_lost_context(dev);
|
|
|
|
BEGIN_LP_RING(2);
|
|
OUT_RING(MI_FLUSH | MI_READ_FLUSH);
|
|
OUT_RING(0);
|
|
ADVANCE_LP_RING();
|
|
|
|
BEGIN_LP_RING(6);
|
|
OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
|
|
OUT_RING(0);
|
|
if (dev_priv->current_page == 0) {
|
|
OUT_RING(dev_priv->back_offset);
|
|
dev_priv->current_page = 1;
|
|
} else {
|
|
OUT_RING(dev_priv->front_offset);
|
|
dev_priv->current_page = 0;
|
|
}
|
|
OUT_RING(0);
|
|
ADVANCE_LP_RING();
|
|
|
|
BEGIN_LP_RING(2);
|
|
OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
|
|
OUT_RING(0);
|
|
ADVANCE_LP_RING();
|
|
|
|
master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
|
|
|
|
BEGIN_LP_RING(4);
|
|
OUT_RING(MI_STORE_DWORD_INDEX);
|
|
OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
|
|
OUT_RING(dev_priv->counter);
|
|
OUT_RING(0);
|
|
ADVANCE_LP_RING();
|
|
|
|
master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
|
|
return 0;
|
|
}
|
|
|
|
static int i915_quiescent(struct drm_device * dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
|
|
i915_kernel_lost_context(dev);
|
|
return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
|
|
}
|
|
|
|
static int i915_flush_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
int ret;
|
|
|
|
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = i915_quiescent(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int i915_batchbuffer(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
|
|
struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
|
|
drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
|
|
master_priv->sarea_priv;
|
|
drm_i915_batchbuffer_t *batch = data;
|
|
int ret;
|
|
struct drm_clip_rect *cliprects = NULL;
|
|
|
|
if (!dev_priv->allow_batchbuffer) {
|
|
DRM_ERROR("Batchbuffer ioctl disabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
|
|
batch->start, batch->used, batch->num_cliprects);
|
|
|
|
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
if (batch->num_cliprects < 0)
|
|
return -EINVAL;
|
|
|
|
if (batch->num_cliprects) {
|
|
cliprects = kcalloc(batch->num_cliprects,
|
|
sizeof(struct drm_clip_rect),
|
|
GFP_KERNEL);
|
|
if (cliprects == NULL)
|
|
return -ENOMEM;
|
|
|
|
ret = copy_from_user(cliprects, batch->cliprects,
|
|
batch->num_cliprects *
|
|
sizeof(struct drm_clip_rect));
|
|
if (ret != 0)
|
|
goto fail_free;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
if (sarea_priv)
|
|
sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
|
|
|
|
fail_free:
|
|
kfree(cliprects);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int i915_cmdbuffer(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
|
|
struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
|
|
drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
|
|
master_priv->sarea_priv;
|
|
drm_i915_cmdbuffer_t *cmdbuf = data;
|
|
struct drm_clip_rect *cliprects = NULL;
|
|
void *batch_data;
|
|
int ret;
|
|
|
|
DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
|
|
cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
|
|
|
|
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
if (cmdbuf->num_cliprects < 0)
|
|
return -EINVAL;
|
|
|
|
batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
|
|
if (batch_data == NULL)
|
|
return -ENOMEM;
|
|
|
|
ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
|
|
if (ret != 0)
|
|
goto fail_batch_free;
|
|
|
|
if (cmdbuf->num_cliprects) {
|
|
cliprects = kcalloc(cmdbuf->num_cliprects,
|
|
sizeof(struct drm_clip_rect), GFP_KERNEL);
|
|
if (cliprects == NULL)
|
|
goto fail_batch_free;
|
|
|
|
ret = copy_from_user(cliprects, cmdbuf->cliprects,
|
|
cmdbuf->num_cliprects *
|
|
sizeof(struct drm_clip_rect));
|
|
if (ret != 0)
|
|
goto fail_clip_free;
|
|
}
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
if (ret) {
|
|
DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
|
|
goto fail_clip_free;
|
|
}
|
|
|
|
if (sarea_priv)
|
|
sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
|
|
|
|
fail_clip_free:
|
|
kfree(cliprects);
|
|
fail_batch_free:
|
|
kfree(batch_data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int i915_flip_bufs(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
int ret;
|
|
|
|
DRM_DEBUG_DRIVER("%s\n", __func__);
|
|
|
|
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = i915_dispatch_flip(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int i915_getparam(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
drm_i915_getparam_t *param = data;
|
|
int value;
|
|
|
|
if (!dev_priv) {
|
|
DRM_ERROR("called with no initialization\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (param->param) {
|
|
case I915_PARAM_IRQ_ACTIVE:
|
|
value = dev->pdev->irq ? 1 : 0;
|
|
break;
|
|
case I915_PARAM_ALLOW_BATCHBUFFER:
|
|
value = dev_priv->allow_batchbuffer ? 1 : 0;
|
|
break;
|
|
case I915_PARAM_LAST_DISPATCH:
|
|
value = READ_BREADCRUMB(dev_priv);
|
|
break;
|
|
case I915_PARAM_CHIPSET_ID:
|
|
value = dev->pci_device;
|
|
break;
|
|
case I915_PARAM_HAS_GEM:
|
|
value = dev_priv->has_gem;
|
|
break;
|
|
case I915_PARAM_NUM_FENCES_AVAIL:
|
|
value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
|
|
break;
|
|
case I915_PARAM_HAS_OVERLAY:
|
|
value = dev_priv->overlay ? 1 : 0;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_DRIVER("Unknown parameter %d\n",
|
|
param->param);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
|
|
DRM_ERROR("DRM_COPY_TO_USER failed\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_setparam(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
drm_i915_setparam_t *param = data;
|
|
|
|
if (!dev_priv) {
|
|
DRM_ERROR("called with no initialization\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (param->param) {
|
|
case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
|
|
break;
|
|
case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
|
|
dev_priv->tex_lru_log_granularity = param->value;
|
|
break;
|
|
case I915_SETPARAM_ALLOW_BATCHBUFFER:
|
|
dev_priv->allow_batchbuffer = param->value;
|
|
break;
|
|
case I915_SETPARAM_NUM_USED_FENCES:
|
|
if (param->value > dev_priv->num_fence_regs ||
|
|
param->value < 0)
|
|
return -EINVAL;
|
|
/* Userspace can use first N regs */
|
|
dev_priv->fence_reg_start = param->value;
|
|
break;
|
|
default:
|
|
DRM_DEBUG_DRIVER("unknown parameter %d\n",
|
|
param->param);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i915_set_status_page(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
drm_i915_hws_addr_t *hws = data;
|
|
|
|
if (!I915_NEED_GFX_HWS(dev))
|
|
return -EINVAL;
|
|
|
|
if (!dev_priv) {
|
|
DRM_ERROR("called with no initialization\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
WARN(1, "tried to set status page when mode setting active\n");
|
|
return 0;
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
|
|
|
|
dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
|
|
|
|
dev_priv->hws_map.offset = dev->agp->base + hws->addr;
|
|
dev_priv->hws_map.size = 4*1024;
|
|
dev_priv->hws_map.type = 0;
|
|
dev_priv->hws_map.flags = 0;
|
|
dev_priv->hws_map.mtrr = 0;
|
|
|
|
drm_core_ioremap_wc(&dev_priv->hws_map, dev);
|
|
if (dev_priv->hws_map.handle == NULL) {
|
|
i915_dma_cleanup(dev);
|
|
dev_priv->status_gfx_addr = 0;
|
|
DRM_ERROR("can not ioremap virtual address for"
|
|
" G33 hw status page\n");
|
|
return -ENOMEM;
|
|
}
|
|
dev_priv->hw_status_page = dev_priv->hws_map.handle;
|
|
|
|
memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
|
|
I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
|
|
DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
|
|
dev_priv->status_gfx_addr);
|
|
DRM_DEBUG_DRIVER("load hws at %p\n",
|
|
dev_priv->hw_status_page);
|
|
return 0;
|
|
}
|
|
|
|
static int i915_get_bridge_dev(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
|
|
if (!dev_priv->bridge_dev) {
|
|
DRM_ERROR("bridge device not found\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i915_probe_agp - get AGP bootup configuration
|
|
* @pdev: PCI device
|
|
* @aperture_size: returns AGP aperture configured size
|
|
* @preallocated_size: returns size of BIOS preallocated AGP space
|
|
*
|
|
* Since Intel integrated graphics are UMA, the BIOS has to set aside
|
|
* some RAM for the framebuffer at early boot. This code figures out
|
|
* how much was set aside so we can use it for our own purposes.
|
|
*/
|
|
static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
|
|
uint32_t *preallocated_size,
|
|
uint32_t *start)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
u16 tmp = 0;
|
|
unsigned long overhead;
|
|
unsigned long stolen;
|
|
|
|
/* Get the fb aperture size and "stolen" memory amount. */
|
|
pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
|
|
|
|
*aperture_size = 1024 * 1024;
|
|
*preallocated_size = 1024 * 1024;
|
|
|
|
switch (dev->pdev->device) {
|
|
case PCI_DEVICE_ID_INTEL_82830_CGC:
|
|
case PCI_DEVICE_ID_INTEL_82845G_IG:
|
|
case PCI_DEVICE_ID_INTEL_82855GM_IG:
|
|
case PCI_DEVICE_ID_INTEL_82865_IG:
|
|
if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
|
|
*aperture_size *= 64;
|
|
else
|
|
*aperture_size *= 128;
|
|
break;
|
|
default:
|
|
/* 9xx supports large sizes, just look at the length */
|
|
*aperture_size = pci_resource_len(dev->pdev, 2);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Some of the preallocated space is taken by the GTT
|
|
* and popup. GTT is 1K per MB of aperture size, and popup is 4K.
|
|
*/
|
|
if (IS_G4X(dev) || IS_IGD(dev) || IS_IGDNG(dev))
|
|
overhead = 4096;
|
|
else
|
|
overhead = (*aperture_size / 1024) + 4096;
|
|
|
|
switch (tmp & INTEL_GMCH_GMS_MASK) {
|
|
case INTEL_855_GMCH_GMS_DISABLED:
|
|
DRM_ERROR("video memory is disabled\n");
|
|
return -1;
|
|
case INTEL_855_GMCH_GMS_STOLEN_1M:
|
|
stolen = 1 * 1024 * 1024;
|
|
break;
|
|
case INTEL_855_GMCH_GMS_STOLEN_4M:
|
|
stolen = 4 * 1024 * 1024;
|
|
break;
|
|
case INTEL_855_GMCH_GMS_STOLEN_8M:
|
|
stolen = 8 * 1024 * 1024;
|
|
break;
|
|
case INTEL_855_GMCH_GMS_STOLEN_16M:
|
|
stolen = 16 * 1024 * 1024;
|
|
break;
|
|
case INTEL_855_GMCH_GMS_STOLEN_32M:
|
|
stolen = 32 * 1024 * 1024;
|
|
break;
|
|
case INTEL_915G_GMCH_GMS_STOLEN_48M:
|
|
stolen = 48 * 1024 * 1024;
|
|
break;
|
|
case INTEL_915G_GMCH_GMS_STOLEN_64M:
|
|
stolen = 64 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_128M:
|
|
stolen = 128 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_256M:
|
|
stolen = 256 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_96M:
|
|
stolen = 96 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_160M:
|
|
stolen = 160 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_224M:
|
|
stolen = 224 * 1024 * 1024;
|
|
break;
|
|
case INTEL_GMCH_GMS_STOLEN_352M:
|
|
stolen = 352 * 1024 * 1024;
|
|
break;
|
|
default:
|
|
DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
|
|
tmp & INTEL_GMCH_GMS_MASK);
|
|
return -1;
|
|
}
|
|
*preallocated_size = stolen - overhead;
|
|
*start = overhead;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define PTE_ADDRESS_MASK 0xfffff000
|
|
#define PTE_ADDRESS_MASK_HIGH 0x000000f0 /* i915+ */
|
|
#define PTE_MAPPING_TYPE_UNCACHED (0 << 1)
|
|
#define PTE_MAPPING_TYPE_DCACHE (1 << 1) /* i830 only */
|
|
#define PTE_MAPPING_TYPE_CACHED (3 << 1)
|
|
#define PTE_MAPPING_TYPE_MASK (3 << 1)
|
|
#define PTE_VALID (1 << 0)
|
|
|
|
/**
|
|
* i915_gtt_to_phys - take a GTT address and turn it into a physical one
|
|
* @dev: drm device
|
|
* @gtt_addr: address to translate
|
|
*
|
|
* Some chip functions require allocations from stolen space but need the
|
|
* physical address of the memory in question. We use this routine
|
|
* to get a physical address suitable for register programming from a given
|
|
* GTT address.
|
|
*/
|
|
static unsigned long i915_gtt_to_phys(struct drm_device *dev,
|
|
unsigned long gtt_addr)
|
|
{
|
|
unsigned long *gtt;
|
|
unsigned long entry, phys;
|
|
int gtt_bar = IS_I9XX(dev) ? 0 : 1;
|
|
int gtt_offset, gtt_size;
|
|
|
|
if (IS_I965G(dev)) {
|
|
if (IS_G4X(dev) || IS_IGDNG(dev)) {
|
|
gtt_offset = 2*1024*1024;
|
|
gtt_size = 2*1024*1024;
|
|
} else {
|
|
gtt_offset = 512*1024;
|
|
gtt_size = 512*1024;
|
|
}
|
|
} else {
|
|
gtt_bar = 3;
|
|
gtt_offset = 0;
|
|
gtt_size = pci_resource_len(dev->pdev, gtt_bar);
|
|
}
|
|
|
|
gtt = ioremap_wc(pci_resource_start(dev->pdev, gtt_bar) + gtt_offset,
|
|
gtt_size);
|
|
if (!gtt) {
|
|
DRM_ERROR("ioremap of GTT failed\n");
|
|
return 0;
|
|
}
|
|
|
|
entry = *(volatile u32 *)(gtt + (gtt_addr / 1024));
|
|
|
|
DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);
|
|
|
|
/* Mask out these reserved bits on this hardware. */
|
|
if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
|
|
IS_I945G(dev) || IS_I945GM(dev)) {
|
|
entry &= ~PTE_ADDRESS_MASK_HIGH;
|
|
}
|
|
|
|
/* If it's not a mapping type we know, then bail. */
|
|
if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
|
|
(entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_CACHED) {
|
|
iounmap(gtt);
|
|
return 0;
|
|
}
|
|
|
|
if (!(entry & PTE_VALID)) {
|
|
DRM_ERROR("bad GTT entry in stolen space\n");
|
|
iounmap(gtt);
|
|
return 0;
|
|
}
|
|
|
|
iounmap(gtt);
|
|
|
|
phys =(entry & PTE_ADDRESS_MASK) |
|
|
((uint64_t)(entry & PTE_ADDRESS_MASK_HIGH) << (32 - 4));
|
|
|
|
DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, phys addr: 0x%08lx\n", gtt_addr, phys);
|
|
|
|
return phys;
|
|
}
|
|
|
|
static void i915_warn_stolen(struct drm_device *dev)
|
|
{
|
|
DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
|
|
DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
|
|
}
|
|
|
|
static void i915_setup_compression(struct drm_device *dev, int size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
struct drm_mm_node *compressed_fb, *compressed_llb;
|
|
unsigned long cfb_base, ll_base;
|
|
|
|
/* Leave 1M for line length buffer & misc. */
|
|
compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
|
|
if (!compressed_fb) {
|
|
i915_warn_stolen(dev);
|
|
return;
|
|
}
|
|
|
|
compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
|
|
if (!compressed_fb) {
|
|
i915_warn_stolen(dev);
|
|
return;
|
|
}
|
|
|
|
cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
|
|
if (!cfb_base) {
|
|
DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
|
|
drm_mm_put_block(compressed_fb);
|
|
}
|
|
|
|
if (!IS_GM45(dev)) {
|
|
compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
|
|
4096, 0);
|
|
if (!compressed_llb) {
|
|
i915_warn_stolen(dev);
|
|
return;
|
|
}
|
|
|
|
compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
|
|
if (!compressed_llb) {
|
|
i915_warn_stolen(dev);
|
|
return;
|
|
}
|
|
|
|
ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
|
|
if (!ll_base) {
|
|
DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
|
|
drm_mm_put_block(compressed_fb);
|
|
drm_mm_put_block(compressed_llb);
|
|
}
|
|
}
|
|
|
|
dev_priv->cfb_size = size;
|
|
|
|
if (IS_GM45(dev)) {
|
|
g4x_disable_fbc(dev);
|
|
I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
|
|
} else {
|
|
i8xx_disable_fbc(dev);
|
|
I915_WRITE(FBC_CFB_BASE, cfb_base);
|
|
I915_WRITE(FBC_LL_BASE, ll_base);
|
|
}
|
|
|
|
DRM_DEBUG("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
|
|
ll_base, size >> 20);
|
|
}
|
|
|
|
/* true = enable decode, false = disable decoder */
|
|
static unsigned int i915_vga_set_decode(void *cookie, bool state)
|
|
{
|
|
struct drm_device *dev = cookie;
|
|
|
|
intel_modeset_vga_set_state(dev, state);
|
|
if (state)
|
|
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
|
|
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
else
|
|
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
|
|
}
|
|
|
|
static int i915_load_modeset_init(struct drm_device *dev,
|
|
unsigned long prealloc_start,
|
|
unsigned long prealloc_size,
|
|
unsigned long agp_size)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int fb_bar = IS_I9XX(dev) ? 2 : 0;
|
|
int ret = 0;
|
|
|
|
dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
|
|
0xff000000;
|
|
|
|
if (IS_MOBILE(dev) || IS_I9XX(dev))
|
|
dev_priv->cursor_needs_physical = true;
|
|
else
|
|
dev_priv->cursor_needs_physical = false;
|
|
|
|
if (IS_I965G(dev) || IS_G33(dev))
|
|
dev_priv->cursor_needs_physical = false;
|
|
|
|
/* Basic memrange allocator for stolen space (aka vram) */
|
|
drm_mm_init(&dev_priv->vram, 0, prealloc_size);
|
|
DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
|
|
|
|
/* We're off and running w/KMS */
|
|
dev_priv->mm.suspended = 0;
|
|
|
|
/* Let GEM Manage from end of prealloc space to end of aperture.
|
|
*
|
|
* However, leave one page at the end still bound to the scratch page.
|
|
* There are a number of places where the hardware apparently
|
|
* prefetches past the end of the object, and we've seen multiple
|
|
* hangs with the GPU head pointer stuck in a batchbuffer bound
|
|
* at the last page of the aperture. One page should be enough to
|
|
* keep any prefetching inside of the aperture.
|
|
*/
|
|
i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
ret = i915_gem_init_ringbuffer(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/* Try to set up FBC with a reasonable compressed buffer size */
|
|
if (I915_HAS_FBC(dev) && i915_powersave) {
|
|
int cfb_size;
|
|
|
|
/* Try to get an 8M buffer... */
|
|
if (prealloc_size > (9*1024*1024))
|
|
cfb_size = 8*1024*1024;
|
|
else /* fall back to 7/8 of the stolen space */
|
|
cfb_size = prealloc_size * 7 / 8;
|
|
i915_setup_compression(dev, cfb_size);
|
|
}
|
|
|
|
/* Allow hardware batchbuffers unless told otherwise.
|
|
*/
|
|
dev_priv->allow_batchbuffer = 1;
|
|
|
|
ret = intel_init_bios(dev);
|
|
if (ret)
|
|
DRM_INFO("failed to find VBIOS tables\n");
|
|
|
|
/* if we have > 1 VGA cards, then disable the radeon VGA resources */
|
|
ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
|
|
if (ret)
|
|
goto destroy_ringbuffer;
|
|
|
|
ret = drm_irq_install(dev);
|
|
if (ret)
|
|
goto destroy_ringbuffer;
|
|
|
|
/* Always safe in the mode setting case. */
|
|
/* FIXME: do pre/post-mode set stuff in core KMS code */
|
|
dev->vblank_disable_allowed = 1;
|
|
|
|
/*
|
|
* Initialize the hardware status page IRQ location.
|
|
*/
|
|
|
|
I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
|
|
|
|
intel_modeset_init(dev);
|
|
|
|
drm_helper_initial_config(dev);
|
|
|
|
return 0;
|
|
|
|
destroy_ringbuffer:
|
|
i915_gem_cleanup_ringbuffer(dev);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int i915_master_create(struct drm_device *dev, struct drm_master *master)
|
|
{
|
|
struct drm_i915_master_private *master_priv;
|
|
|
|
master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
|
|
if (!master_priv)
|
|
return -ENOMEM;
|
|
|
|
master->driver_priv = master_priv;
|
|
return 0;
|
|
}
|
|
|
|
void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
|
|
{
|
|
struct drm_i915_master_private *master_priv = master->driver_priv;
|
|
|
|
if (!master_priv)
|
|
return;
|
|
|
|
kfree(master_priv);
|
|
|
|
master->driver_priv = NULL;
|
|
}
|
|
|
|
static void i915_get_mem_freq(struct drm_device *dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
u32 tmp;
|
|
|
|
if (!IS_IGD(dev))
|
|
return;
|
|
|
|
tmp = I915_READ(CLKCFG);
|
|
|
|
switch (tmp & CLKCFG_FSB_MASK) {
|
|
case CLKCFG_FSB_533:
|
|
dev_priv->fsb_freq = 533; /* 133*4 */
|
|
break;
|
|
case CLKCFG_FSB_800:
|
|
dev_priv->fsb_freq = 800; /* 200*4 */
|
|
break;
|
|
case CLKCFG_FSB_667:
|
|
dev_priv->fsb_freq = 667; /* 167*4 */
|
|
break;
|
|
case CLKCFG_FSB_400:
|
|
dev_priv->fsb_freq = 400; /* 100*4 */
|
|
break;
|
|
}
|
|
|
|
switch (tmp & CLKCFG_MEM_MASK) {
|
|
case CLKCFG_MEM_533:
|
|
dev_priv->mem_freq = 533;
|
|
break;
|
|
case CLKCFG_MEM_667:
|
|
dev_priv->mem_freq = 667;
|
|
break;
|
|
case CLKCFG_MEM_800:
|
|
dev_priv->mem_freq = 800;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i915_driver_load - setup chip and create an initial config
|
|
* @dev: DRM device
|
|
* @flags: startup flags
|
|
*
|
|
* The driver load routine has to do several things:
|
|
* - drive output discovery via intel_modeset_init()
|
|
* - initialize the memory manager
|
|
* - allocate initial config memory
|
|
* - setup the DRM framebuffer with the allocated memory
|
|
*/
|
|
int i915_driver_load(struct drm_device *dev, unsigned long flags)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
resource_size_t base, size;
|
|
int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
|
|
uint32_t agp_size, prealloc_size, prealloc_start;
|
|
|
|
/* i915 has 4 more counters */
|
|
dev->counters += 4;
|
|
dev->types[6] = _DRM_STAT_IRQ;
|
|
dev->types[7] = _DRM_STAT_PRIMARY;
|
|
dev->types[8] = _DRM_STAT_SECONDARY;
|
|
dev->types[9] = _DRM_STAT_DMA;
|
|
|
|
dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
|
|
if (dev_priv == NULL)
|
|
return -ENOMEM;
|
|
|
|
dev->dev_private = (void *)dev_priv;
|
|
dev_priv->dev = dev;
|
|
|
|
/* Add register map (needed for suspend/resume) */
|
|
base = drm_get_resource_start(dev, mmio_bar);
|
|
size = drm_get_resource_len(dev, mmio_bar);
|
|
|
|
if (i915_get_bridge_dev(dev)) {
|
|
ret = -EIO;
|
|
goto free_priv;
|
|
}
|
|
|
|
dev_priv->regs = ioremap(base, size);
|
|
if (!dev_priv->regs) {
|
|
DRM_ERROR("failed to map registers\n");
|
|
ret = -EIO;
|
|
goto put_bridge;
|
|
}
|
|
|
|
dev_priv->mm.gtt_mapping =
|
|
io_mapping_create_wc(dev->agp->base,
|
|
dev->agp->agp_info.aper_size * 1024*1024);
|
|
if (dev_priv->mm.gtt_mapping == NULL) {
|
|
ret = -EIO;
|
|
goto out_rmmap;
|
|
}
|
|
|
|
/* Set up a WC MTRR for non-PAT systems. This is more common than
|
|
* one would think, because the kernel disables PAT on first
|
|
* generation Core chips because WC PAT gets overridden by a UC
|
|
* MTRR if present. Even if a UC MTRR isn't present.
|
|
*/
|
|
dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
|
|
dev->agp->agp_info.aper_size *
|
|
1024 * 1024,
|
|
MTRR_TYPE_WRCOMB, 1);
|
|
if (dev_priv->mm.gtt_mtrr < 0) {
|
|
DRM_INFO("MTRR allocation failed. Graphics "
|
|
"performance may suffer.\n");
|
|
}
|
|
|
|
ret = i915_probe_agp(dev, &agp_size, &prealloc_size, &prealloc_start);
|
|
if (ret)
|
|
goto out_iomapfree;
|
|
|
|
dev_priv->wq = create_singlethread_workqueue("i915");
|
|
if (dev_priv->wq == NULL) {
|
|
DRM_ERROR("Failed to create our workqueue.\n");
|
|
ret = -ENOMEM;
|
|
goto out_iomapfree;
|
|
}
|
|
|
|
/* enable GEM by default */
|
|
dev_priv->has_gem = 1;
|
|
|
|
if (prealloc_size > agp_size * 3 / 4) {
|
|
DRM_ERROR("Detected broken video BIOS with %d/%dkB of video "
|
|
"memory stolen.\n",
|
|
prealloc_size / 1024, agp_size / 1024);
|
|
DRM_ERROR("Disabling GEM. (try reducing stolen memory or "
|
|
"updating the BIOS to fix).\n");
|
|
dev_priv->has_gem = 0;
|
|
}
|
|
|
|
dev->driver->get_vblank_counter = i915_get_vblank_counter;
|
|
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
|
|
if (IS_G4X(dev) || IS_IGDNG(dev)) {
|
|
dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
|
|
dev->driver->get_vblank_counter = gm45_get_vblank_counter;
|
|
}
|
|
|
|
i915_gem_load(dev);
|
|
|
|
/* Init HWS */
|
|
if (!I915_NEED_GFX_HWS(dev)) {
|
|
ret = i915_init_phys_hws(dev);
|
|
if (ret != 0)
|
|
goto out_workqueue_free;
|
|
}
|
|
|
|
i915_get_mem_freq(dev);
|
|
|
|
/* On the 945G/GM, the chipset reports the MSI capability on the
|
|
* integrated graphics even though the support isn't actually there
|
|
* according to the published specs. It doesn't appear to function
|
|
* correctly in testing on 945G.
|
|
* This may be a side effect of MSI having been made available for PEG
|
|
* and the registers being closely associated.
|
|
*
|
|
* According to chipset errata, on the 965GM, MSI interrupts may
|
|
* be lost or delayed, but we use them anyways to avoid
|
|
* stuck interrupts on some machines.
|
|
*/
|
|
if (!IS_I945G(dev) && !IS_I945GM(dev))
|
|
pci_enable_msi(dev->pdev);
|
|
|
|
spin_lock_init(&dev_priv->user_irq_lock);
|
|
spin_lock_init(&dev_priv->error_lock);
|
|
dev_priv->user_irq_refcount = 0;
|
|
dev_priv->trace_irq_seqno = 0;
|
|
|
|
ret = drm_vblank_init(dev, I915_NUM_PIPE);
|
|
|
|
if (ret) {
|
|
(void) i915_driver_unload(dev);
|
|
return ret;
|
|
}
|
|
|
|
/* Start out suspended */
|
|
dev_priv->mm.suspended = 1;
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = i915_load_modeset_init(dev, prealloc_start,
|
|
prealloc_size, agp_size);
|
|
if (ret < 0) {
|
|
DRM_ERROR("failed to init modeset\n");
|
|
goto out_workqueue_free;
|
|
}
|
|
}
|
|
|
|
/* Must be done after probing outputs */
|
|
/* FIXME: verify on IGDNG */
|
|
if (!IS_IGDNG(dev))
|
|
intel_opregion_init(dev, 0);
|
|
|
|
setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
|
|
(unsigned long) dev);
|
|
return 0;
|
|
|
|
out_workqueue_free:
|
|
destroy_workqueue(dev_priv->wq);
|
|
out_iomapfree:
|
|
io_mapping_free(dev_priv->mm.gtt_mapping);
|
|
out_rmmap:
|
|
iounmap(dev_priv->regs);
|
|
put_bridge:
|
|
pci_dev_put(dev_priv->bridge_dev);
|
|
free_priv:
|
|
kfree(dev_priv);
|
|
return ret;
|
|
}
|
|
|
|
int i915_driver_unload(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
destroy_workqueue(dev_priv->wq);
|
|
del_timer_sync(&dev_priv->hangcheck_timer);
|
|
|
|
io_mapping_free(dev_priv->mm.gtt_mapping);
|
|
if (dev_priv->mm.gtt_mtrr >= 0) {
|
|
mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
|
|
dev->agp->agp_info.aper_size * 1024 * 1024);
|
|
dev_priv->mm.gtt_mtrr = -1;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
drm_irq_uninstall(dev);
|
|
vga_client_register(dev->pdev, NULL, NULL, NULL);
|
|
}
|
|
|
|
if (dev->pdev->msi_enabled)
|
|
pci_disable_msi(dev->pdev);
|
|
|
|
if (dev_priv->regs != NULL)
|
|
iounmap(dev_priv->regs);
|
|
|
|
if (!IS_IGDNG(dev))
|
|
intel_opregion_free(dev, 0);
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
intel_modeset_cleanup(dev);
|
|
|
|
i915_gem_free_all_phys_object(dev);
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
i915_gem_cleanup_ringbuffer(dev);
|
|
mutex_unlock(&dev->struct_mutex);
|
|
drm_mm_takedown(&dev_priv->vram);
|
|
i915_gem_lastclose(dev);
|
|
|
|
intel_cleanup_overlay(dev);
|
|
}
|
|
|
|
pci_dev_put(dev_priv->bridge_dev);
|
|
kfree(dev->dev_private);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
|
|
{
|
|
struct drm_i915_file_private *i915_file_priv;
|
|
|
|
DRM_DEBUG_DRIVER("\n");
|
|
i915_file_priv = (struct drm_i915_file_private *)
|
|
kmalloc(sizeof(*i915_file_priv), GFP_KERNEL);
|
|
|
|
if (!i915_file_priv)
|
|
return -ENOMEM;
|
|
|
|
file_priv->driver_priv = i915_file_priv;
|
|
|
|
INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i915_driver_lastclose - clean up after all DRM clients have exited
|
|
* @dev: DRM device
|
|
*
|
|
* Take care of cleaning up after all DRM clients have exited. In the
|
|
* mode setting case, we want to restore the kernel's initial mode (just
|
|
* in case the last client left us in a bad state).
|
|
*
|
|
* Additionally, in the non-mode setting case, we'll tear down the AGP
|
|
* and DMA structures, since the kernel won't be using them, and clea
|
|
* up any GEM state.
|
|
*/
|
|
void i915_driver_lastclose(struct drm_device * dev)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
|
|
if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
drm_fb_helper_restore();
|
|
return;
|
|
}
|
|
|
|
i915_gem_lastclose(dev);
|
|
|
|
if (dev_priv->agp_heap)
|
|
i915_mem_takedown(&(dev_priv->agp_heap));
|
|
|
|
i915_dma_cleanup(dev);
|
|
}
|
|
|
|
void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
|
|
{
|
|
drm_i915_private_t *dev_priv = dev->dev_private;
|
|
i915_gem_release(dev, file_priv);
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
i915_mem_release(dev, file_priv, dev_priv->agp_heap);
|
|
}
|
|
|
|
void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
|
|
{
|
|
struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
|
|
|
|
kfree(i915_file_priv);
|
|
}
|
|
|
|
struct drm_ioctl_desc i915_ioctls[] = {
|
|
DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
|
|
DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
|
|
DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH ),
|
|
DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_GEM_MADVISE, i915_gem_madvise_ioctl, 0),
|
|
DRM_IOCTL_DEF(DRM_I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
DRM_IOCTL_DEF(DRM_I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW),
|
|
};
|
|
|
|
int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
|
|
|
|
/**
|
|
* Determine if the device really is AGP or not.
|
|
*
|
|
* All Intel graphics chipsets are treated as AGP, even if they are really
|
|
* PCI-e.
|
|
*
|
|
* \param dev The device to be tested.
|
|
*
|
|
* \returns
|
|
* A value of 1 is always retured to indictate every i9x5 is AGP.
|
|
*/
|
|
int i915_driver_device_is_agp(struct drm_device * dev)
|
|
{
|
|
return 1;
|
|
}
|