diff options
Diffstat (limited to 'sys/dev/pci/drm/mga_dma.c')
| -rw-r--r-- | sys/dev/pci/drm/mga_dma.c | 975 |
1 files changed, 0 insertions, 975 deletions
diff --git a/sys/dev/pci/drm/mga_dma.c b/sys/dev/pci/drm/mga_dma.c deleted file mode 100644 index fea770d41c5..00000000000 --- a/sys/dev/pci/drm/mga_dma.c +++ /dev/null @@ -1,975 +0,0 @@ -/* mga_dma.c -- DMA support for mga g200/g400 -*- linux-c -*- - * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com - */ -/* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -/** - * \file mga_dma.c - * DMA support for MGA G200 / G400. - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Jeff Hartmann <jhartmann@valinux.com> - * \author Keith Whitwell <keith@tungstengraphics.com> - * \author Gareth Hughes <gareth@valinux.com> - */ - -#include "drmP.h" -#include "drm.h" -#include "drm_sarea.h" -#include "mga_drm.h" -#include "mga_drv.h" - -#define MGA_FREELIST_DEBUG 0 - -#define MINIMAL_CLEANUP 0 -#define FULL_CLEANUP 1 -static int mga_do_cleanup_dma(struct drm_device *dev, int full_cleanup); - -/* ================================================================ - * Engine control - */ - -int mga_do_wait_for_idle(drm_mga_private_t * dev_priv) -{ - u32 status = 0; - int i; - DRM_DEBUG("\n"); - - for (i = 0; i < dev_priv->usec_timeout; i++) { - status = MGA_READ(MGA_STATUS) & MGA_ENGINE_IDLE_MASK; - if (status == MGA_ENDPRDMASTS) { - MGA_WRITE8(MGA_CRTC_INDEX, 0); - return 0; - } - DRM_UDELAY(1); - } - -#if MGA_DMA_DEBUG - DRM_ERROR("failed!\n"); - DRM_INFO(" status=0x%08x\n", status); -#endif - return EBUSY; -} - -static int mga_do_dma_reset(drm_mga_private_t * dev_priv) -{ - drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - - DRM_DEBUG("\n"); - - /* The primary DMA stream should look like new right about now. - */ - primary->tail = 0; - primary->space = primary->size; - primary->last_flush = 0; - - sarea_priv->last_wrap = 0; - - /* FIXME: Reset counters, buffer ages etc... - */ - - /* FIXME: What else do we need to reinitialize? WARP stuff? - */ - - return 0; -} - -/* ================================================================ - * Primary DMA stream - */ - -void mga_do_dma_flush(drm_mga_private_t * dev_priv) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - u32 head, tail; - u32 status = 0; - int i; - DMA_LOCALS; - DRM_DEBUG("\n"); - - /* We need to wait so that we can do an safe flush */ - for (i = 0; i < dev_priv->usec_timeout; i++) { - status = MGA_READ(MGA_STATUS) & MGA_ENGINE_IDLE_MASK; - if (status == MGA_ENDPRDMASTS) - break; - DRM_UDELAY(1); - } - - if (primary->tail == primary->last_flush) { - DRM_DEBUG(" bailing out...\n"); - return; - } - - tail = primary->tail + dev_priv->primary->offset; - - /* We need to pad the stream between flushes, as the card - * actually (partially?) reads the first of these commands. - * See page 4-16 in the G400 manual, middle of the page or so. - */ - BEGIN_DMA(1); - - DMA_BLOCK(MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000); - - ADVANCE_DMA(); - - primary->last_flush = primary->tail; - - head = MGA_READ(MGA_PRIMADDRESS); - - if (head <= tail) { - primary->space = primary->size - primary->tail; - } else { - primary->space = head - tail; - } - - DRM_DEBUG(" head = 0x%06lx\n", head - dev_priv->primary->offset); - DRM_DEBUG(" tail = 0x%06lx\n", tail - dev_priv->primary->offset); - DRM_DEBUG(" space = 0x%06x\n", primary->space); - - mga_flush_write_combine(); - MGA_WRITE(MGA_PRIMEND, tail | dev_priv->dma_access); - - DRM_DEBUG("done.\n"); -} - -void mga_do_dma_wrap_start(drm_mga_private_t * dev_priv) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - u32 head, tail; - DMA_LOCALS; - DRM_DEBUG("\n"); - - BEGIN_DMA_WRAP(); - - DMA_BLOCK(MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000); - - ADVANCE_DMA(); - - tail = primary->tail + dev_priv->primary->offset; - - primary->tail = 0; - primary->last_flush = 0; - primary->last_wrap++; - - head = MGA_READ(MGA_PRIMADDRESS); - - if (head == dev_priv->primary->offset) { - primary->space = primary->size; - } else { - primary->space = head - dev_priv->primary->offset; - } - - DRM_DEBUG(" head = 0x%06lx\n", head - dev_priv->primary->offset); - DRM_DEBUG(" tail = 0x%06x\n", primary->tail); - DRM_DEBUG(" wrap = %d\n", primary->last_wrap); - DRM_DEBUG(" space = 0x%06x\n", primary->space); - - mga_flush_write_combine(); - MGA_WRITE(MGA_PRIMEND, tail | dev_priv->dma_access); - - set_bit(0, &primary->wrapped); - DRM_DEBUG("done.\n"); -} - -void mga_do_dma_wrap_end(drm_mga_private_t * dev_priv) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; - u32 head = dev_priv->primary->offset; - DRM_DEBUG("\n"); - - sarea_priv->last_wrap++; - DRM_DEBUG(" wrap = %d\n", sarea_priv->last_wrap); - - mga_flush_write_combine(); - MGA_WRITE(MGA_PRIMADDRESS, head | MGA_DMA_GENERAL); - - clear_bit(0, &primary->wrapped); - DRM_DEBUG("done.\n"); -} - -/* ================================================================ - * Freelist management - */ - -#define MGA_BUFFER_USED ~0 -#define MGA_BUFFER_FREE 0 - -#if MGA_FREELIST_DEBUG -static void mga_freelist_print(struct drm_device * dev) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - struct mgadrm_buf_priv *entry; - - DRM_INFO("\n"); - DRM_INFO("current dispatch: last=0x%x done=0x%x\n", - dev_priv->sarea_priv->last_dispatch, - (unsigned int)(MGA_READ(MGA_PRIMADDRESS) - - dev_priv->primary->offset)); - DRM_INFO("current freelist:\n"); - - TAILQ_FOREACH(entry, &dev_priv->freelist, link) { - DRM_INFO(" %p idx=%2d age=0x%x 0x%06lx\n", - entry, entry->buf->idx, entry->age.head, - entry->age.head - dev_priv->primary->offset); - } - DRM_INFO("\n"); -} -#endif - -static int -mga_freelist_init(struct drm_device *dev, drm_mga_private_t *dev_priv) -{ - struct drm_device_dma *dma = dev->dma; - struct drm_buf *buf; - struct mgadrm_buf_priv *buf_priv; - int i; - - DRM_DEBUG("count=%d\n", dma->buf_count); - - /* if we have a freelist lying around, this'll nuke them. */ - TAILQ_INIT(&dev_priv->freelist); - - for (i = 0; i < dma->buf_count; i++) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - - TAILQ_INSERT_HEAD(&dev_priv->freelist, buf_priv, link); - SET_AGE(&buf_priv->age, MGA_BUFFER_FREE, 0); - buf_priv->discard = 0; - buf_priv->dispatched = 0; - } - - return (0); -} - -static struct drm_buf * -mga_freelist_get(struct drm_device *dev) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - struct mgadrm_buf_priv *entry; - u_int32_t head, wrap; - - DRM_DEBUG("\n"); - - head = MGA_READ(MGA_PRIMADDRESS); - wrap = dev_priv->sarea_priv->last_wrap; - - DRM_DEBUG(" tail=0x%06lx %d\n", tail->age.head ? - tail->age.head - dev_priv->primary->offset : 0, tail->age.wrap); - DRM_DEBUG(" head=0x%06lx %d\n", head - dev_priv->primary->offset, - wrap); - - if ((entry = TAILQ_LAST(&dev_priv->freelist, mga_freelist)) != NULL && - TEST_AGE(&entry->age, head, wrap)) { - TAILQ_REMOVE(&dev_priv->freelist, entry, link); - SET_AGE(&entry->age, MGA_BUFFER_USED, 0); - return (entry->buf); - } - - DRM_DEBUG("returning NULL!\n"); - return (NULL); -} - -int -mga_freelist_put(struct drm_device *dev, struct drm_buf *buf) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - struct mgadrm_buf_priv *buf_priv = buf->dev_private; - - DRM_DEBUG("age=0x%06lx wrap=%d\n", buf_priv->list_entry->age.head - - dev_priv->primary->offset, buf_priv->list_entry->age.wrap); - - if (buf_priv->age.head == MGA_BUFFER_USED) { - SET_AGE(&buf_priv->age, MGA_BUFFER_FREE, 0); - TAILQ_INSERT_TAIL(&dev_priv->freelist, buf_priv, link); - } else { - TAILQ_INSERT_HEAD(&dev_priv->freelist, buf_priv, link); - } - - return (0); -} - -/* ================================================================ - * DMA initialization, cleanup - */ - -/** - * Bootstrap the driver for AGP DMA. - * - * \todo - * Investigate whether there is any benifit to storing the WARP microcode in - * AGP memory. If not, the microcode may as well always be put in PCI - * memory. - * - * \todo - * This routine needs to set dma_bs->agp_mode to the mode actually configured - * in the hardware. Looking just at the Linux AGP driver code, I don't see - * an easy way to determine this. - * - * \sa mga_do_dma_bootstrap, mga_do_pci_dma_bootstrap - */ -static int mga_do_agp_dma_bootstrap(struct drm_device *dev, - drm_mga_dma_bootstrap_t * dma_bs) -{ - drm_mga_private_t *const dev_priv = - (drm_mga_private_t *)dev->dev_private; - unsigned int warp_size = mga_warp_microcode_size(dev_priv); - int err; - unsigned offset; - const unsigned secondary_size = dma_bs->secondary_bin_count - * dma_bs->secondary_bin_size; - const unsigned agp_size = (dma_bs->agp_size << 20); - struct drm_buf_desc req; - struct drm_agp_mode mode; - struct drm_agp_info info; - struct drm_agp_buffer agp_req; - struct drm_agp_binding bind_req; - - /* Acquire AGP. */ - err = drm_agp_acquire(dev); - if (err) { - DRM_ERROR("Unable to acquire AGP: %d\n", err); - return err; - } - - err = drm_agp_info(dev, &info); - if (err) { - DRM_ERROR("Unable to get AGP info: %d\n", err); - return err; - } - - mode.mode = (info.mode & ~0x07) | dma_bs->agp_mode; - err = drm_agp_enable(dev, mode); - if (err) { - DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode); - return err; - } - - /* In addition to the usual AGP mode configuration, the G200 AGP cards - * need to have the AGP mode "manually" set. - */ - - if (dev_priv->chipset == MGA_CARD_TYPE_G200) { - if (mode.mode & 0x02) { - MGA_WRITE(MGA_AGP_PLL, MGA_AGP2XPLL_ENABLE); - } else { - MGA_WRITE(MGA_AGP_PLL, MGA_AGP2XPLL_DISABLE); - } - } - - /* Allocate and bind AGP memory. */ - agp_req.size = agp_size; - agp_req.type = 0; - err = drm_agp_alloc(dev, &agp_req); - if (err) { - dev_priv->agp_size = 0; - DRM_ERROR("Unable to allocate %uMB AGP memory\n", - dma_bs->agp_size); - return err; - } - - dev_priv->agp_size = agp_size; - dev_priv->agp_handle = agp_req.handle; - - bind_req.handle = agp_req.handle; - bind_req.offset = 0; - err = drm_agp_bind( dev, &bind_req ); - if (err) { - DRM_ERROR("Unable to bind AGP memory: %d\n", err); - return err; - } - - /* Make drm_addbufs happy by not trying to create a mapping for less - * than a page. - */ - if (warp_size < PAGE_SIZE) - warp_size = PAGE_SIZE; - - offset = 0; - err = drm_addmap(dev, offset, warp_size, - _DRM_AGP, _DRM_READ_ONLY, &dev_priv->warp); - if (err) { - DRM_ERROR("Unable to map WARP microcode: %d\n", err); - return err; - } - - offset += warp_size; - err = drm_addmap(dev, offset, dma_bs->primary_size, - _DRM_AGP, _DRM_READ_ONLY, & dev_priv->primary); - if (err) { - DRM_ERROR("Unable to map primary DMA region: %d\n", err); - return err; - } - - offset += dma_bs->primary_size; - err = drm_addmap(dev, offset, secondary_size, - _DRM_AGP, 0, & dev->agp_buffer_map); - if (err) { - DRM_ERROR("Unable to map secondary DMA region: %d\n", err); - return err; - } - - (void)memset( &req, 0, sizeof(req) ); - req.count = dma_bs->secondary_bin_count; - req.size = dma_bs->secondary_bin_size; - req.flags = _DRM_AGP_BUFFER; - req.agp_start = offset; - - err = drm_addbufs(dev, &req); - if (err) { - DRM_ERROR("Unable to add secondary DMA buffers: %d\n", err); - return err; - } - - offset += secondary_size; - err = drm_addmap(dev, offset, agp_size - offset, - _DRM_AGP, 0, & dev_priv->agp_textures); - if (err) { - DRM_ERROR("Unable to map AGP texture region: %d\n", err); - return err; - } - - drm_core_ioremap(dev_priv->warp, dev); - drm_core_ioremap(dev_priv->primary, dev); - drm_core_ioremap(dev->agp_buffer_map, dev); - - if (!dev_priv->warp->handle || - !dev_priv->primary->handle || !dev->agp_buffer_map->handle) { - DRM_ERROR("failed to ioremap agp regions! (%p, %p, %p)\n", - dev_priv->warp->handle, dev_priv->primary->handle, - dev->agp_buffer_map->handle); - return ENOMEM; - } - - dev_priv->dma_access = MGA_PAGPXFER; - dev_priv->wagp_enable = MGA_WAGP_ENABLE; - - DRM_INFO("Initialized card for AGP DMA.\n"); - return 0; -} - -/** - * Bootstrap the driver for PCI DMA. - * - * \todo - * The algorithm for decreasing the size of the primary DMA buffer could be - * better. The size should be rounded up to the nearest page size, then - * decrease the request size by a single page each pass through the loop. - * - * \todo - * Determine whether the maximum address passed to drm_pci_alloc is correct. - * The same goes for drm_addbufs_pci. - * - * \sa mga_do_dma_bootstrap, mga_do_agp_dma_bootstrap - */ -static int mga_do_pci_dma_bootstrap(struct drm_device * dev, - drm_mga_dma_bootstrap_t * dma_bs) -{ - drm_mga_private_t *const dev_priv = - (drm_mga_private_t *) dev->dev_private; - unsigned int warp_size = mga_warp_microcode_size(dev_priv); - unsigned int primary_size; - unsigned int bin_count; - int err; - struct drm_buf_desc req; - - - if (dev->dma == NULL) { - DRM_ERROR("dev->dma is NULL\n"); - return EFAULT; - } - - /* Make drm_addbufs happy by not trying to create a mapping for less - * than a page. - */ - if (warp_size < PAGE_SIZE) - warp_size = PAGE_SIZE; - - /* The proper alignment is 0x100 for this mapping */ - err = drm_addmap(dev, 0, warp_size, _DRM_CONSISTENT, - _DRM_READ_ONLY, &dev_priv->warp); - if (err != 0) { - DRM_ERROR("Unable to create mapping for WARP microcode: %d\n", - err); - return err; - } - - /* Other than the bottom two bits being used to encode other - * information, there don't appear to be any restrictions on the - * alignment of the primary or secondary DMA buffers. - */ - - for (primary_size = dma_bs->primary_size; primary_size != 0; - primary_size >>= 1 ) { - /* The proper alignment for this mapping is 0x04 */ - err = drm_addmap(dev, 0, primary_size, _DRM_CONSISTENT, - _DRM_READ_ONLY, &dev_priv->primary); - if (!err) - break; - } - - if (err != 0) { - DRM_ERROR("Unable to allocate primary DMA region: %d\n", err); - return ENOMEM; - } - - if (dev_priv->primary->size != dma_bs->primary_size) { - DRM_INFO("Primary DMA buffer size reduced from %u to %u.\n", - dma_bs->primary_size, - (unsigned)dev_priv->primary->size); - dma_bs->primary_size = dev_priv->primary->size; - } - - for (bin_count = dma_bs->secondary_bin_count; bin_count > 0; - bin_count-- ) { - (void)memset(&req, 0, sizeof(req)); - req.count = bin_count; - req.size = dma_bs->secondary_bin_size; - - err = drm_addbufs(dev, &req); - if (!err) { - break; - } - } - - if (bin_count == 0) { - DRM_ERROR("Unable to add secondary DMA buffers: %d\n", err); - return err; - } - - if (bin_count != dma_bs->secondary_bin_count) { - DRM_INFO("Secondary PCI DMA buffer bin count reduced from %u " - "to %u.\n", dma_bs->secondary_bin_count, bin_count); - - dma_bs->secondary_bin_count = bin_count; - } - - dev_priv->dma_access = 0; - dev_priv->wagp_enable = 0; - - dma_bs->agp_mode = 0; - - DRM_INFO("Initialized card for PCI DMA.\n"); - return 0; -} - - -static int mga_do_dma_bootstrap(struct drm_device *dev, - drm_mga_dma_bootstrap_t *dma_bs) -{ - const int is_agp = (dma_bs->agp_mode != 0) && dev->agp != NULL; - int err; - drm_mga_private_t *const dev_priv = - (drm_mga_private_t *) dev->dev_private; - - - dev_priv->used_new_dma_init = 1; - - /* The first steps are the same for both PCI and AGP based DMA. Map - * a status page. The mmio registers were mapped on attach. - */ - err = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, - _DRM_READ_ONLY | _DRM_LOCKED | _DRM_KERNEL, - & dev_priv->status); - if (err) { - DRM_ERROR("Unable to map status region: %d\n", err); - return err; - } - - - /* The DMA initialization procedure is slightly different for PCI and - * AGP cards. AGP cards just allocate a large block of AGP memory and - * carve off portions of it for internal uses. The remaining memory - * is returned to user-mode to be used for AGP textures. - */ - - if (is_agp) { - err = mga_do_agp_dma_bootstrap(dev, dma_bs); - } - - /* If we attempted to initialize the card for AGP DMA but failed, - * clean-up any mess that may have been created. - */ - - if (err) { - mga_do_cleanup_dma(dev, MINIMAL_CLEANUP); - } - - - /* Not only do we want to try and initialized PCI cards for PCI DMA, - * but we also try to initialized AGP cards that could not be - * initialized for AGP DMA. This covers the case where we have an AGP - * card in a system with an unsupported AGP chipset. In that case the - * card will be detected as AGP, but we won't be able to allocate any - * AGP memory, etc. - */ - - if (!is_agp || err) { - err = mga_do_pci_dma_bootstrap(dev, dma_bs); - } - - - return err; -} - -int mga_dma_bootstrap(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_mga_dma_bootstrap_t *bootstrap = data; - int err; - static const int modes[] = { 0, 1, 2, 2, 4, 4, 4, 4 }; - const drm_mga_private_t *const dev_priv = - (drm_mga_private_t *) dev->dev_private; - - - err = mga_do_dma_bootstrap(dev, bootstrap); - if (err) { - mga_do_cleanup_dma(dev, FULL_CLEANUP); - return err; - } - - if (dev_priv->agp_textures != NULL) { - bootstrap->texture_handle = dev_priv->agp_textures->offset; - bootstrap->texture_size = dev_priv->agp_textures->size; - } else { - bootstrap->texture_handle = 0; - bootstrap->texture_size = 0; - } - - bootstrap->agp_mode = modes[bootstrap->agp_mode & 0x07]; - - return 0; -} - - -static int mga_do_init_dma(struct drm_device * dev, drm_mga_init_t * init) -{ - drm_mga_private_t *dev_priv; - int ret; - DRM_DEBUG("\n"); - - - dev_priv = dev->dev_private; - - if (init->sgram) { - dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_BLK; - } else { - dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_RSTR; - } - dev_priv->maccess = init->maccess; - - dev_priv->fb_cpp = init->fb_cpp; - dev_priv->front_offset = init->front_offset; - dev_priv->front_pitch = init->front_pitch; - dev_priv->back_offset = init->back_offset; - dev_priv->back_pitch = init->back_pitch; - - dev_priv->depth_cpp = init->depth_cpp; - dev_priv->depth_offset = init->depth_offset; - dev_priv->depth_pitch = init->depth_pitch; - - /* FIXME: Need to support AGP textures... - */ - dev_priv->texture_offset = init->texture_offset[0]; - dev_priv->texture_size = init->texture_size[0]; - - dev_priv->sarea = drm_getsarea(dev); - if (!dev_priv->sarea) { - DRM_ERROR("failed to find sarea!\n"); - return EINVAL; - } - - if (!dev_priv->used_new_dma_init) { - - dev_priv->dma_access = MGA_PAGPXFER; - dev_priv->wagp_enable = MGA_WAGP_ENABLE; - - dev_priv->status = drm_core_findmap(dev, init->status_offset); - if (!dev_priv->status) { - DRM_ERROR("failed to find status page!\n"); - return EINVAL; - } - dev_priv->warp = drm_core_findmap(dev, init->warp_offset); - if (!dev_priv->warp) { - DRM_ERROR("failed to find warp microcode region!\n"); - return EINVAL; - } - dev_priv->primary = drm_core_findmap(dev, init->primary_offset); - if (!dev_priv->primary) { - DRM_ERROR("failed to find primary dma region!\n"); - return EINVAL; - } - dev->agp_buffer_map = - drm_core_findmap(dev, init->buffers_offset); - if (!dev->agp_buffer_map) { - DRM_ERROR("failed to find dma buffer region!\n"); - return EINVAL; - } - - drm_core_ioremap(dev_priv->warp, dev); - drm_core_ioremap(dev_priv->primary, dev); - drm_core_ioremap(dev->agp_buffer_map, dev); - } - - dev_priv->sarea_priv = - (drm_mga_sarea_t *) ((u8 *) dev_priv->sarea->handle + - init->sarea_priv_offset); - - if (!dev_priv->warp->handle || - !dev_priv->primary->handle || - ((dev_priv->dma_access != 0) && - ((dev->agp_buffer_map == NULL) || - (dev->agp_buffer_map->handle == NULL)))) { - DRM_ERROR("failed to ioremap agp regions!\n"); - return ENOMEM; - } - - ret = mga_warp_install_microcode(dev_priv); - if (ret != 0) { - DRM_ERROR("failed to install WARP ucode: %d!\n", ret); - return ret; - } - - ret = mga_warp_init(dev_priv); - if (ret != 0) { - DRM_ERROR("failed to init WARP engine: %d!\n", ret); - return ret; - } - - dev_priv->prim.status = (u32 *) dev_priv->status->handle; - - mga_do_wait_for_idle(dev_priv); - - /* Init the primary DMA registers. - */ - MGA_WRITE(MGA_PRIMADDRESS, dev_priv->primary->offset | MGA_DMA_GENERAL); - - dev_priv->prim.start = (u8 *) dev_priv->primary->handle; - dev_priv->prim.end = ((u8 *) dev_priv->primary->handle - + dev_priv->primary->size); - dev_priv->prim.size = dev_priv->primary->size; - - dev_priv->prim.tail = 0; - dev_priv->prim.space = dev_priv->prim.size; - dev_priv->prim.wrapped = 0; - - dev_priv->prim.last_flush = 0; - dev_priv->prim.last_wrap = 0; - - dev_priv->prim.high_mark = 256 * DMA_BLOCK_SIZE; - - dev_priv->prim.status[0] = dev_priv->primary->offset; - dev_priv->prim.status[1] = 0; - - dev_priv->sarea_priv->last_wrap = 0; - dev_priv->sarea_priv->last_frame.head = 0; - dev_priv->sarea_priv->last_frame.wrap = 0; - - if (mga_freelist_init(dev, dev_priv) < 0) { - DRM_ERROR("could not initialize freelist\n"); - return ENOMEM; - } - - return 0; -} - -static int mga_do_cleanup_dma(struct drm_device *dev, int full_cleanup) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - int err = 0; - DRM_DEBUG("\n"); - - if ((dev_priv->warp != NULL) - && (dev_priv->warp->type != _DRM_CONSISTENT)) - drm_core_ioremapfree(dev_priv->warp); - - if ((dev_priv->primary != NULL) - && (dev_priv->primary->type != _DRM_CONSISTENT)) - drm_core_ioremapfree(dev_priv->primary); - - if (dev->agp_buffer_map != NULL) - drm_core_ioremapfree(dev->agp_buffer_map); - - if (dev_priv->used_new_dma_init) { - if (dev_priv->agp_handle != 0) { - struct drm_agp_binding unbind_req; - struct drm_agp_buffer free_req; - - unbind_req.handle = dev_priv->agp_handle; - drm_agp_unbind(dev, &unbind_req); - - free_req.handle = dev_priv->agp_handle; - drm_agp_free(dev, &free_req); - - dev_priv->agp_textures = NULL; - dev_priv->agp_size = 0; - dev_priv->agp_handle = 0; - } - - if ((dev->agp != NULL) && dev->agp->acquired) { - err = drm_agp_release(dev); - } - } - - dev_priv->warp = NULL; - dev_priv->primary = NULL; - dev_priv->sarea = NULL; - dev_priv->sarea_priv = NULL; - dev->agp_buffer_map = NULL; - - if (full_cleanup) { - dev_priv->status = NULL; - dev_priv->used_new_dma_init = 0; - } - - memset(&dev_priv->prim, 0, sizeof(dev_priv->prim)); - dev_priv->warp_pipe = 0; - memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys)); - - return err; -} - -int mga_dma_init(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_mga_init_t *init = data; - int err; - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - switch (init->func) { - case MGA_INIT_DMA: - err = mga_do_init_dma(dev, init); - if (err) { - (void)mga_do_cleanup_dma(dev, FULL_CLEANUP); - } - return err; - case MGA_CLEANUP_DMA: - return mga_do_cleanup_dma(dev, FULL_CLEANUP); - } - - return EINVAL; -} - -/* ================================================================ - * Primary DMA stream management - */ - -int mga_dma_flush(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; - struct drm_lock *lock = data; - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - DRM_DEBUG("%s%s%s\n", - (lock->flags & _DRM_LOCK_FLUSH) ? "flush, " : "", - (lock->flags & _DRM_LOCK_FLUSH_ALL) ? "flush all, " : "", - (lock->flags & _DRM_LOCK_QUIESCENT) ? "idle, " : ""); - - WRAP_WAIT_WITH_RETURN(dev_priv); - - if (lock->flags & (_DRM_LOCK_FLUSH | _DRM_LOCK_FLUSH_ALL)) { - mga_do_dma_flush(dev_priv); - } - - if (lock->flags & _DRM_LOCK_QUIESCENT) { -#if MGA_DMA_DEBUG - int ret = mga_do_wait_for_idle(dev_priv); - if (ret < 0) - DRM_INFO("EBUSY\n"); - return ret; -#else - return mga_do_wait_for_idle(dev_priv); -#endif - } else { - return 0; - } -} - -int mga_dma_reset(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; - - LOCK_TEST_WITH_RETURN(dev, file_priv); - - return mga_do_dma_reset(dev_priv); -} - -/* ================================================================ - * DMA buffer management - */ - - -int -mga_dma_buffers(struct drm_device *dev, struct drm_dma * d, - struct drm_file *file_priv) -{ - drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private; - struct drm_buf *buf; - int i; - - WRAP_TEST_WITH_RETURN(dev_priv); - - for (i = d->granted_count; i < d->request_count; i++) { - buf = mga_freelist_get(dev); - if (!buf) - return EAGAIN; - - buf->file_priv = file_priv; - - if (DRM_COPY_TO_USER(&d->request_indices[i], - &buf->idx, sizeof(buf->idx))) - return EFAULT; - if (DRM_COPY_TO_USER(&d->request_sizes[i], - &buf->total, sizeof(buf->total))) - return EFAULT; - - d->granted_count++; - } - return 0; -} - -/** - * Called when the last opener of the device is closed. - */ -void mga_driver_lastclose(struct drm_device * dev) -{ - mga_do_cleanup_dma(dev, FULL_CLEANUP); -} - -int mga_driver_dma_quiescent(struct drm_device * dev) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - return mga_do_wait_for_idle(dev_priv); -} |