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Diffstat (limited to 'drivers/char/drm/savage_bci.c')
-rw-r--r--drivers/char/drm/savage_bci.c1095
1 files changed, 0 insertions, 1095 deletions
diff --git a/drivers/char/drm/savage_bci.c b/drivers/char/drm/savage_bci.c
deleted file mode 100644
index d465b2f9c1cd..000000000000
--- a/drivers/char/drm/savage_bci.c
+++ /dev/null
@@ -1,1095 +0,0 @@
-/* savage_bci.c -- BCI support for Savage
- *
- * Copyright 2004 Felix Kuehling
- * 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, sub license,
- * 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
- * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING 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.
- */
-#include "drmP.h"
-#include "savage_drm.h"
-#include "savage_drv.h"
-
-/* Need a long timeout for shadow status updates can take a while
- * and so can waiting for events when the queue is full. */
-#define SAVAGE_DEFAULT_USEC_TIMEOUT 1000000 /* 1s */
-#define SAVAGE_EVENT_USEC_TIMEOUT 5000000 /* 5s */
-#define SAVAGE_FREELIST_DEBUG 0
-
-static int savage_do_cleanup_bci(struct drm_device *dev);
-
-static int
-savage_bci_wait_fifo_shadow(drm_savage_private_t * dev_priv, unsigned int n)
-{
- uint32_t mask = dev_priv->status_used_mask;
- uint32_t threshold = dev_priv->bci_threshold_hi;
- uint32_t status;
- int i;
-
-#if SAVAGE_BCI_DEBUG
- if (n > dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - threshold)
- DRM_ERROR("Trying to emit %d words "
- "(more than guaranteed space in COB)\n", n);
-#endif
-
- for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
- DRM_MEMORYBARRIER();
- status = dev_priv->status_ptr[0];
- if ((status & mask) < threshold)
- return 0;
- DRM_UDELAY(1);
- }
-
-#if SAVAGE_BCI_DEBUG
- DRM_ERROR("failed!\n");
- DRM_INFO(" status=0x%08x, threshold=0x%08x\n", status, threshold);
-#endif
- return -EBUSY;
-}
-
-static int
-savage_bci_wait_fifo_s3d(drm_savage_private_t * dev_priv, unsigned int n)
-{
- uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
- uint32_t status;
- int i;
-
- for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
- status = SAVAGE_READ(SAVAGE_STATUS_WORD0);
- if ((status & SAVAGE_FIFO_USED_MASK_S3D) <= maxUsed)
- return 0;
- DRM_UDELAY(1);
- }
-
-#if SAVAGE_BCI_DEBUG
- DRM_ERROR("failed!\n");
- DRM_INFO(" status=0x%08x\n", status);
-#endif
- return -EBUSY;
-}
-
-static int
-savage_bci_wait_fifo_s4(drm_savage_private_t * dev_priv, unsigned int n)
-{
- uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
- uint32_t status;
- int i;
-
- for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
- status = SAVAGE_READ(SAVAGE_ALT_STATUS_WORD0);
- if ((status & SAVAGE_FIFO_USED_MASK_S4) <= maxUsed)
- return 0;
- DRM_UDELAY(1);
- }
-
-#if SAVAGE_BCI_DEBUG
- DRM_ERROR("failed!\n");
- DRM_INFO(" status=0x%08x\n", status);
-#endif
- return -EBUSY;
-}
-
-/*
- * Waiting for events.
- *
- * The BIOSresets the event tag to 0 on mode changes. Therefore we
- * never emit 0 to the event tag. If we find a 0 event tag we know the
- * BIOS stomped on it and return success assuming that the BIOS waited
- * for engine idle.
- *
- * Note: if the Xserver uses the event tag it has to follow the same
- * rule. Otherwise there may be glitches every 2^16 events.
- */
-static int
-savage_bci_wait_event_shadow(drm_savage_private_t * dev_priv, uint16_t e)
-{
- uint32_t status;
- int i;
-
- for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
- DRM_MEMORYBARRIER();
- status = dev_priv->status_ptr[1];
- if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
- (status & 0xffff) == 0)
- return 0;
- DRM_UDELAY(1);
- }
-
-#if SAVAGE_BCI_DEBUG
- DRM_ERROR("failed!\n");
- DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
-#endif
-
- return -EBUSY;
-}
-
-static int
-savage_bci_wait_event_reg(drm_savage_private_t * dev_priv, uint16_t e)
-{
- uint32_t status;
- int i;
-
- for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
- status = SAVAGE_READ(SAVAGE_STATUS_WORD1);
- if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
- (status & 0xffff) == 0)
- return 0;
- DRM_UDELAY(1);
- }
-
-#if SAVAGE_BCI_DEBUG
- DRM_ERROR("failed!\n");
- DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
-#endif
-
- return -EBUSY;
-}
-
-uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv,
- unsigned int flags)
-{
- uint16_t count;
- BCI_LOCALS;
-
- if (dev_priv->status_ptr) {
- /* coordinate with Xserver */
- count = dev_priv->status_ptr[1023];
- if (count < dev_priv->event_counter)
- dev_priv->event_wrap++;
- } else {
- count = dev_priv->event_counter;
- }
- count = (count + 1) & 0xffff;
- if (count == 0) {
- count++; /* See the comment above savage_wait_event_*. */
- dev_priv->event_wrap++;
- }
- dev_priv->event_counter = count;
- if (dev_priv->status_ptr)
- dev_priv->status_ptr[1023] = (uint32_t) count;
-
- if ((flags & (SAVAGE_WAIT_2D | SAVAGE_WAIT_3D))) {
- unsigned int wait_cmd = BCI_CMD_WAIT;
- if ((flags & SAVAGE_WAIT_2D))
- wait_cmd |= BCI_CMD_WAIT_2D;
- if ((flags & SAVAGE_WAIT_3D))
- wait_cmd |= BCI_CMD_WAIT_3D;
- BEGIN_BCI(2);
- BCI_WRITE(wait_cmd);
- } else {
- BEGIN_BCI(1);
- }
- BCI_WRITE(BCI_CMD_UPDATE_EVENT_TAG | (uint32_t) count);
-
- return count;
-}
-
-/*
- * Freelist management
- */
-static int savage_freelist_init(struct drm_device * dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- struct drm_device_dma *dma = dev->dma;
- struct drm_buf *buf;
- drm_savage_buf_priv_t *entry;
- int i;
- DRM_DEBUG("count=%d\n", dma->buf_count);
-
- dev_priv->head.next = &dev_priv->tail;
- dev_priv->head.prev = NULL;
- dev_priv->head.buf = NULL;
-
- dev_priv->tail.next = NULL;
- dev_priv->tail.prev = &dev_priv->head;
- dev_priv->tail.buf = NULL;
-
- for (i = 0; i < dma->buf_count; i++) {
- buf = dma->buflist[i];
- entry = buf->dev_private;
-
- SET_AGE(&entry->age, 0, 0);
- entry->buf = buf;
-
- entry->next = dev_priv->head.next;
- entry->prev = &dev_priv->head;
- dev_priv->head.next->prev = entry;
- dev_priv->head.next = entry;
- }
-
- return 0;
-}
-
-static struct drm_buf *savage_freelist_get(struct drm_device * dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- drm_savage_buf_priv_t *tail = dev_priv->tail.prev;
- uint16_t event;
- unsigned int wrap;
- DRM_DEBUG("\n");
-
- UPDATE_EVENT_COUNTER();
- if (dev_priv->status_ptr)
- event = dev_priv->status_ptr[1] & 0xffff;
- else
- event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
- wrap = dev_priv->event_wrap;
- if (event > dev_priv->event_counter)
- wrap--; /* hardware hasn't passed the last wrap yet */
-
- DRM_DEBUG(" tail=0x%04x %d\n", tail->age.event, tail->age.wrap);
- DRM_DEBUG(" head=0x%04x %d\n", event, wrap);
-
- if (tail->buf && (TEST_AGE(&tail->age, event, wrap) || event == 0)) {
- drm_savage_buf_priv_t *next = tail->next;
- drm_savage_buf_priv_t *prev = tail->prev;
- prev->next = next;
- next->prev = prev;
- tail->next = tail->prev = NULL;
- return tail->buf;
- }
-
- DRM_DEBUG("returning NULL, tail->buf=%p!\n", tail->buf);
- return NULL;
-}
-
-void savage_freelist_put(struct drm_device * dev, struct drm_buf * buf)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- drm_savage_buf_priv_t *entry = buf->dev_private, *prev, *next;
-
- DRM_DEBUG("age=0x%04x wrap=%d\n", entry->age.event, entry->age.wrap);
-
- if (entry->next != NULL || entry->prev != NULL) {
- DRM_ERROR("entry already on freelist.\n");
- return;
- }
-
- prev = &dev_priv->head;
- next = prev->next;
- prev->next = entry;
- next->prev = entry;
- entry->prev = prev;
- entry->next = next;
-}
-
-/*
- * Command DMA
- */
-static int savage_dma_init(drm_savage_private_t * dev_priv)
-{
- unsigned int i;
-
- dev_priv->nr_dma_pages = dev_priv->cmd_dma->size /
- (SAVAGE_DMA_PAGE_SIZE * 4);
- dev_priv->dma_pages = drm_alloc(sizeof(drm_savage_dma_page_t) *
- dev_priv->nr_dma_pages, DRM_MEM_DRIVER);
- if (dev_priv->dma_pages == NULL)
- return -ENOMEM;
-
- for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
- SET_AGE(&dev_priv->dma_pages[i].age, 0, 0);
- dev_priv->dma_pages[i].used = 0;
- dev_priv->dma_pages[i].flushed = 0;
- }
- SET_AGE(&dev_priv->last_dma_age, 0, 0);
-
- dev_priv->first_dma_page = 0;
- dev_priv->current_dma_page = 0;
-
- return 0;
-}
-
-void savage_dma_reset(drm_savage_private_t * dev_priv)
-{
- uint16_t event;
- unsigned int wrap, i;
- event = savage_bci_emit_event(dev_priv, 0);
- wrap = dev_priv->event_wrap;
- for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
- SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
- dev_priv->dma_pages[i].used = 0;
- dev_priv->dma_pages[i].flushed = 0;
- }
- SET_AGE(&dev_priv->last_dma_age, event, wrap);
- dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
-}
-
-void savage_dma_wait(drm_savage_private_t * dev_priv, unsigned int page)
-{
- uint16_t event;
- unsigned int wrap;
-
- /* Faked DMA buffer pages don't age. */
- if (dev_priv->cmd_dma == &dev_priv->fake_dma)
- return;
-
- UPDATE_EVENT_COUNTER();
- if (dev_priv->status_ptr)
- event = dev_priv->status_ptr[1] & 0xffff;
- else
- event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
- wrap = dev_priv->event_wrap;
- if (event > dev_priv->event_counter)
- wrap--; /* hardware hasn't passed the last wrap yet */
-
- if (dev_priv->dma_pages[page].age.wrap > wrap ||
- (dev_priv->dma_pages[page].age.wrap == wrap &&
- dev_priv->dma_pages[page].age.event > event)) {
- if (dev_priv->wait_evnt(dev_priv,
- dev_priv->dma_pages[page].age.event)
- < 0)
- DRM_ERROR("wait_evnt failed!\n");
- }
-}
-
-uint32_t *savage_dma_alloc(drm_savage_private_t * dev_priv, unsigned int n)
-{
- unsigned int cur = dev_priv->current_dma_page;
- unsigned int rest = SAVAGE_DMA_PAGE_SIZE -
- dev_priv->dma_pages[cur].used;
- unsigned int nr_pages = (n - rest + SAVAGE_DMA_PAGE_SIZE - 1) /
- SAVAGE_DMA_PAGE_SIZE;
- uint32_t *dma_ptr;
- unsigned int i;
-
- DRM_DEBUG("cur=%u, cur->used=%u, n=%u, rest=%u, nr_pages=%u\n",
- cur, dev_priv->dma_pages[cur].used, n, rest, nr_pages);
-
- if (cur + nr_pages < dev_priv->nr_dma_pages) {
- dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
- cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
- if (n < rest)
- rest = n;
- dev_priv->dma_pages[cur].used += rest;
- n -= rest;
- cur++;
- } else {
- dev_priv->dma_flush(dev_priv);
- nr_pages =
- (n + SAVAGE_DMA_PAGE_SIZE - 1) / SAVAGE_DMA_PAGE_SIZE;
- for (i = cur; i < dev_priv->nr_dma_pages; ++i) {
- dev_priv->dma_pages[i].age = dev_priv->last_dma_age;
- dev_priv->dma_pages[i].used = 0;
- dev_priv->dma_pages[i].flushed = 0;
- }
- dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle;
- dev_priv->first_dma_page = cur = 0;
- }
- for (i = cur; nr_pages > 0; ++i, --nr_pages) {
-#if SAVAGE_DMA_DEBUG
- if (dev_priv->dma_pages[i].used) {
- DRM_ERROR("unflushed page %u: used=%u\n",
- i, dev_priv->dma_pages[i].used);
- }
-#endif
- if (n > SAVAGE_DMA_PAGE_SIZE)
- dev_priv->dma_pages[i].used = SAVAGE_DMA_PAGE_SIZE;
- else
- dev_priv->dma_pages[i].used = n;
- n -= SAVAGE_DMA_PAGE_SIZE;
- }
- dev_priv->current_dma_page = --i;
-
- DRM_DEBUG("cur=%u, cur->used=%u, n=%u\n",
- i, dev_priv->dma_pages[i].used, n);
-
- savage_dma_wait(dev_priv, dev_priv->current_dma_page);
-
- return dma_ptr;
-}
-
-static void savage_dma_flush(drm_savage_private_t * dev_priv)
-{
- unsigned int first = dev_priv->first_dma_page;
- unsigned int cur = dev_priv->current_dma_page;
- uint16_t event;
- unsigned int wrap, pad, align, len, i;
- unsigned long phys_addr;
- BCI_LOCALS;
-
- if (first == cur &&
- dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed)
- return;
-
- /* pad length to multiples of 2 entries
- * align start of next DMA block to multiles of 8 entries */
- pad = -dev_priv->dma_pages[cur].used & 1;
- align = -(dev_priv->dma_pages[cur].used + pad) & 7;
-
- DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, "
- "pad=%u, align=%u\n",
- first, cur, dev_priv->dma_pages[first].flushed,
- dev_priv->dma_pages[cur].used, pad, align);
-
- /* pad with noops */
- if (pad) {
- uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
- cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
- dev_priv->dma_pages[cur].used += pad;
- while (pad != 0) {
- *dma_ptr++ = BCI_CMD_WAIT;
- pad--;
- }
- }
-
- DRM_MEMORYBARRIER();
-
- /* do flush ... */
- phys_addr = dev_priv->cmd_dma->offset +
- (first * SAVAGE_DMA_PAGE_SIZE +
- dev_priv->dma_pages[first].flushed) * 4;
- len = (cur - first) * SAVAGE_DMA_PAGE_SIZE +
- dev_priv->dma_pages[cur].used - dev_priv->dma_pages[first].flushed;
-
- DRM_DEBUG("phys_addr=%lx, len=%u\n",
- phys_addr | dev_priv->dma_type, len);
-
- BEGIN_BCI(3);
- BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1);
- BCI_WRITE(phys_addr | dev_priv->dma_type);
- BCI_DMA(len);
-
- /* fix alignment of the start of the next block */
- dev_priv->dma_pages[cur].used += align;
-
- /* age DMA pages */
- event = savage_bci_emit_event(dev_priv, 0);
- wrap = dev_priv->event_wrap;
- for (i = first; i < cur; ++i) {
- SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
- dev_priv->dma_pages[i].used = 0;
- dev_priv->dma_pages[i].flushed = 0;
- }
- /* age the current page only when it's full */
- if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) {
- SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap);
- dev_priv->dma_pages[cur].used = 0;
- dev_priv->dma_pages[cur].flushed = 0;
- /* advance to next page */
- cur++;
- if (cur == dev_priv->nr_dma_pages)
- cur = 0;
- dev_priv->first_dma_page = dev_priv->current_dma_page = cur;
- } else {
- dev_priv->first_dma_page = cur;
- dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used;
- }
- SET_AGE(&dev_priv->last_dma_age, event, wrap);
-
- DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur,
- dev_priv->dma_pages[cur].used,
- dev_priv->dma_pages[cur].flushed);
-}
-
-static void savage_fake_dma_flush(drm_savage_private_t * dev_priv)
-{
- unsigned int i, j;
- BCI_LOCALS;
-
- if (dev_priv->first_dma_page == dev_priv->current_dma_page &&
- dev_priv->dma_pages[dev_priv->current_dma_page].used == 0)
- return;
-
- DRM_DEBUG("first=%u, cur=%u, cur->used=%u\n",
- dev_priv->first_dma_page, dev_priv->current_dma_page,
- dev_priv->dma_pages[dev_priv->current_dma_page].used);
-
- for (i = dev_priv->first_dma_page;
- i <= dev_priv->current_dma_page && dev_priv->dma_pages[i].used;
- ++i) {
- uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
- i * SAVAGE_DMA_PAGE_SIZE;
-#if SAVAGE_DMA_DEBUG
- /* Sanity check: all pages except the last one must be full. */
- if (i < dev_priv->current_dma_page &&
- dev_priv->dma_pages[i].used != SAVAGE_DMA_PAGE_SIZE) {
- DRM_ERROR("partial DMA page %u: used=%u",
- i, dev_priv->dma_pages[i].used);
- }
-#endif
- BEGIN_BCI(dev_priv->dma_pages[i].used);
- for (j = 0; j < dev_priv->dma_pages[i].used; ++j) {
- BCI_WRITE(dma_ptr[j]);
- }
- dev_priv->dma_pages[i].used = 0;
- }
-
- /* reset to first page */
- dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
-}
-
-int savage_driver_load(struct drm_device *dev, unsigned long chipset)
-{
- drm_savage_private_t *dev_priv;
-
- dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
- if (dev_priv == NULL)
- return -ENOMEM;
-
- memset(dev_priv, 0, sizeof(drm_savage_private_t));
- dev->dev_private = (void *)dev_priv;
-
- dev_priv->chipset = (enum savage_family)chipset;
-
- return 0;
-}
-
-
-/*
- * Initalize mappings. On Savage4 and SavageIX the alignment
- * and size of the aperture is not suitable for automatic MTRR setup
- * in drm_addmap. Therefore we add them manually before the maps are
- * initialized, and tear them down on last close.
- */
-int savage_driver_firstopen(struct drm_device *dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- unsigned long mmio_base, fb_base, fb_size, aperture_base;
- /* fb_rsrc and aper_rsrc aren't really used currently, but still exist
- * in case we decide we need information on the BAR for BSD in the
- * future.
- */
- unsigned int fb_rsrc, aper_rsrc;
- int ret = 0;
-
- dev_priv->mtrr[0].handle = -1;
- dev_priv->mtrr[1].handle = -1;
- dev_priv->mtrr[2].handle = -1;
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- fb_rsrc = 0;
- fb_base = drm_get_resource_start(dev, 0);
- fb_size = SAVAGE_FB_SIZE_S3;
- mmio_base = fb_base + SAVAGE_FB_SIZE_S3;
- aper_rsrc = 0;
- aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
- /* this should always be true */
- if (drm_get_resource_len(dev, 0) == 0x08000000) {
- /* Don't make MMIO write-cobining! We need 3
- * MTRRs. */
- dev_priv->mtrr[0].base = fb_base;
- dev_priv->mtrr[0].size = 0x01000000;
- dev_priv->mtrr[0].handle =
- drm_mtrr_add(dev_priv->mtrr[0].base,
- dev_priv->mtrr[0].size, DRM_MTRR_WC);
- dev_priv->mtrr[1].base = fb_base + 0x02000000;
- dev_priv->mtrr[1].size = 0x02000000;
- dev_priv->mtrr[1].handle =
- drm_mtrr_add(dev_priv->mtrr[1].base,
- dev_priv->mtrr[1].size, DRM_MTRR_WC);
- dev_priv->mtrr[2].base = fb_base + 0x04000000;
- dev_priv->mtrr[2].size = 0x04000000;
- dev_priv->mtrr[2].handle =
- drm_mtrr_add(dev_priv->mtrr[2].base,
- dev_priv->mtrr[2].size, DRM_MTRR_WC);
- } else {
- DRM_ERROR("strange pci_resource_len %08lx\n",
- drm_get_resource_len(dev, 0));
- }
- } else if (dev_priv->chipset != S3_SUPERSAVAGE &&
- dev_priv->chipset != S3_SAVAGE2000) {
- mmio_base = drm_get_resource_start(dev, 0);
- fb_rsrc = 1;
- fb_base = drm_get_resource_start(dev, 1);
- fb_size = SAVAGE_FB_SIZE_S4;
- aper_rsrc = 1;
- aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
- /* this should always be true */
- if (drm_get_resource_len(dev, 1) == 0x08000000) {
- /* Can use one MTRR to cover both fb and
- * aperture. */
- dev_priv->mtrr[0].base = fb_base;
- dev_priv->mtrr[0].size = 0x08000000;
- dev_priv->mtrr[0].handle =
- drm_mtrr_add(dev_priv->mtrr[0].base,
- dev_priv->mtrr[0].size, DRM_MTRR_WC);
- } else {
- DRM_ERROR("strange pci_resource_len %08lx\n",
- drm_get_resource_len(dev, 1));
- }
- } else {
- mmio_base = drm_get_resource_start(dev, 0);
- fb_rsrc = 1;
- fb_base = drm_get_resource_start(dev, 1);
- fb_size = drm_get_resource_len(dev, 1);
- aper_rsrc = 2;
- aperture_base = drm_get_resource_start(dev, 2);
- /* Automatic MTRR setup will do the right thing. */
- }
-
- ret = drm_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE, _DRM_REGISTERS,
- _DRM_READ_ONLY, &dev_priv->mmio);
- if (ret)
- return ret;
-
- ret = drm_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER,
- _DRM_WRITE_COMBINING, &dev_priv->fb);
- if (ret)
- return ret;
-
- ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
- _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
- &dev_priv->aperture);
- if (ret)
- return ret;
-
- return ret;
-}
-
-/*
- * Delete MTRRs and free device-private data.
- */
-void savage_driver_lastclose(struct drm_device *dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- int i;
-
- for (i = 0; i < 3; ++i)
- if (dev_priv->mtrr[i].handle >= 0)
- drm_mtrr_del(dev_priv->mtrr[i].handle,
- dev_priv->mtrr[i].base,
- dev_priv->mtrr[i].size, DRM_MTRR_WC);
-}
-
-int savage_driver_unload(struct drm_device *dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
-
- drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
-
- return 0;
-}
-
-static int savage_do_init_bci(struct drm_device * dev, drm_savage_init_t * init)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
-
- if (init->fb_bpp != 16 && init->fb_bpp != 32) {
- DRM_ERROR("invalid frame buffer bpp %d!\n", init->fb_bpp);
- return -EINVAL;
- }
- if (init->depth_bpp != 16 && init->depth_bpp != 32) {
- DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp);
- return -EINVAL;
- }
- if (init->dma_type != SAVAGE_DMA_AGP &&
- init->dma_type != SAVAGE_DMA_PCI) {
- DRM_ERROR("invalid dma memory type %d!\n", init->dma_type);
- return -EINVAL;
- }
-
- dev_priv->cob_size = init->cob_size;
- dev_priv->bci_threshold_lo = init->bci_threshold_lo;
- dev_priv->bci_threshold_hi = init->bci_threshold_hi;
- dev_priv->dma_type = init->dma_type;
-
- dev_priv->fb_bpp = init->fb_bpp;
- 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_bpp = init->depth_bpp;
- dev_priv->depth_offset = init->depth_offset;
- dev_priv->depth_pitch = init->depth_pitch;
-
- dev_priv->texture_offset = init->texture_offset;
- dev_priv->texture_size = init->texture_size;
-
- dev_priv->sarea = drm_getsarea(dev);
- if (!dev_priv->sarea) {
- DRM_ERROR("could not find sarea!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- if (init->status_offset != 0) {
- dev_priv->status = drm_core_findmap(dev, init->status_offset);
- if (!dev_priv->status) {
- DRM_ERROR("could not find shadow status region!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- } else {
- dev_priv->status = NULL;
- }
- if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) {
- dev->agp_buffer_token = init->buffers_offset;
- dev->agp_buffer_map = drm_core_findmap(dev,
- init->buffers_offset);
- if (!dev->agp_buffer_map) {
- DRM_ERROR("could not find DMA buffer region!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- drm_core_ioremap(dev->agp_buffer_map, dev);
- if (!dev->agp_buffer_map) {
- DRM_ERROR("failed to ioremap DMA buffer region!\n");
- savage_do_cleanup_bci(dev);
- return -ENOMEM;
- }
- }
- if (init->agp_textures_offset) {
- dev_priv->agp_textures =
- drm_core_findmap(dev, init->agp_textures_offset);
- if (!dev_priv->agp_textures) {
- DRM_ERROR("could not find agp texture region!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- } else {
- dev_priv->agp_textures = NULL;
- }
-
- if (init->cmd_dma_offset) {
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- DRM_ERROR("command DMA not supported on "
- "Savage3D/MX/IX.\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- if (dev->dma && dev->dma->buflist) {
- DRM_ERROR("command and vertex DMA not supported "
- "at the same time.\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- dev_priv->cmd_dma = drm_core_findmap(dev, init->cmd_dma_offset);
- if (!dev_priv->cmd_dma) {
- DRM_ERROR("could not find command DMA region!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- if (dev_priv->dma_type == SAVAGE_DMA_AGP) {
- if (dev_priv->cmd_dma->type != _DRM_AGP) {
- DRM_ERROR("AGP command DMA region is not a "
- "_DRM_AGP map!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- drm_core_ioremap(dev_priv->cmd_dma, dev);
- if (!dev_priv->cmd_dma->handle) {
- DRM_ERROR("failed to ioremap command "
- "DMA region!\n");
- savage_do_cleanup_bci(dev);
- return -ENOMEM;
- }
- } else if (dev_priv->cmd_dma->type != _DRM_CONSISTENT) {
- DRM_ERROR("PCI command DMA region is not a "
- "_DRM_CONSISTENT map!\n");
- savage_do_cleanup_bci(dev);
- return -EINVAL;
- }
- } else {
- dev_priv->cmd_dma = NULL;
- }
-
- dev_priv->dma_flush = savage_dma_flush;
- if (!dev_priv->cmd_dma) {
- DRM_DEBUG("falling back to faked command DMA.\n");
- dev_priv->fake_dma.offset = 0;
- dev_priv->fake_dma.size = SAVAGE_FAKE_DMA_SIZE;
- dev_priv->fake_dma.type = _DRM_SHM;
- dev_priv->fake_dma.handle = drm_alloc(SAVAGE_FAKE_DMA_SIZE,
- DRM_MEM_DRIVER);
- if (!dev_priv->fake_dma.handle) {
- DRM_ERROR("could not allocate faked DMA buffer!\n");
- savage_do_cleanup_bci(dev);
- return -ENOMEM;
- }
- dev_priv->cmd_dma = &dev_priv->fake_dma;
- dev_priv->dma_flush = savage_fake_dma_flush;
- }
-
- dev_priv->sarea_priv =
- (drm_savage_sarea_t *) ((uint8_t *) dev_priv->sarea->handle +
- init->sarea_priv_offset);
-
- /* setup bitmap descriptors */
- {
- unsigned int color_tile_format;
- unsigned int depth_tile_format;
- unsigned int front_stride, back_stride, depth_stride;
- if (dev_priv->chipset <= S3_SAVAGE4) {
- color_tile_format = dev_priv->fb_bpp == 16 ?
- SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
- depth_tile_format = dev_priv->depth_bpp == 16 ?
- SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
- } else {
- color_tile_format = SAVAGE_BD_TILE_DEST;
- depth_tile_format = SAVAGE_BD_TILE_DEST;
- }
- front_stride = dev_priv->front_pitch / (dev_priv->fb_bpp / 8);
- back_stride = dev_priv->back_pitch / (dev_priv->fb_bpp / 8);
- depth_stride =
- dev_priv->depth_pitch / (dev_priv->depth_bpp / 8);
-
- dev_priv->front_bd = front_stride | SAVAGE_BD_BW_DISABLE |
- (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
- (color_tile_format << SAVAGE_BD_TILE_SHIFT);
-
- dev_priv->back_bd = back_stride | SAVAGE_BD_BW_DISABLE |
- (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
- (color_tile_format << SAVAGE_BD_TILE_SHIFT);
-
- dev_priv->depth_bd = depth_stride | SAVAGE_BD_BW_DISABLE |
- (dev_priv->depth_bpp << SAVAGE_BD_BPP_SHIFT) |
- (depth_tile_format << SAVAGE_BD_TILE_SHIFT);
- }
-
- /* setup status and bci ptr */
- dev_priv->event_counter = 0;
- dev_priv->event_wrap = 0;
- dev_priv->bci_ptr = (volatile uint32_t *)
- ((uint8_t *) dev_priv->mmio->handle + SAVAGE_BCI_OFFSET);
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S3D;
- } else {
- dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S4;
- }
- if (dev_priv->status != NULL) {
- dev_priv->status_ptr =
- (volatile uint32_t *)dev_priv->status->handle;
- dev_priv->wait_fifo = savage_bci_wait_fifo_shadow;
- dev_priv->wait_evnt = savage_bci_wait_event_shadow;
- dev_priv->status_ptr[1023] = dev_priv->event_counter;
- } else {
- dev_priv->status_ptr = NULL;
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- dev_priv->wait_fifo = savage_bci_wait_fifo_s3d;
- } else {
- dev_priv->wait_fifo = savage_bci_wait_fifo_s4;
- }
- dev_priv->wait_evnt = savage_bci_wait_event_reg;
- }
-
- /* cliprect functions */
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset))
- dev_priv->emit_clip_rect = savage_emit_clip_rect_s3d;
- else
- dev_priv->emit_clip_rect = savage_emit_clip_rect_s4;
-
- if (savage_freelist_init(dev) < 0) {
- DRM_ERROR("could not initialize freelist\n");
- savage_do_cleanup_bci(dev);
- return -ENOMEM;
- }
-
- if (savage_dma_init(dev_priv) < 0) {
- DRM_ERROR("could not initialize command DMA\n");
- savage_do_cleanup_bci(dev);
- return -ENOMEM;
- }
-
- return 0;
-}
-
-static int savage_do_cleanup_bci(struct drm_device * dev)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
-
- if (dev_priv->cmd_dma == &dev_priv->fake_dma) {
- if (dev_priv->fake_dma.handle)
- drm_free(dev_priv->fake_dma.handle,
- SAVAGE_FAKE_DMA_SIZE, DRM_MEM_DRIVER);
- } else if (dev_priv->cmd_dma && dev_priv->cmd_dma->handle &&
- dev_priv->cmd_dma->type == _DRM_AGP &&
- dev_priv->dma_type == SAVAGE_DMA_AGP)
- drm_core_ioremapfree(dev_priv->cmd_dma, dev);
-
- if (dev_priv->dma_type == SAVAGE_DMA_AGP &&
- dev->agp_buffer_map && dev->agp_buffer_map->handle) {
- drm_core_ioremapfree(dev->agp_buffer_map, dev);
- /* make sure the next instance (which may be running
- * in PCI mode) doesn't try to use an old
- * agp_buffer_map. */
- dev->agp_buffer_map = NULL;
- }
-
- if (dev_priv->dma_pages)
- drm_free(dev_priv->dma_pages,
- sizeof(drm_savage_dma_page_t) * dev_priv->nr_dma_pages,
- DRM_MEM_DRIVER);
-
- return 0;
-}
-
-static int savage_bci_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- drm_savage_init_t *init = data;
-
- LOCK_TEST_WITH_RETURN(dev, file_priv);
-
- switch (init->func) {
- case SAVAGE_INIT_BCI:
- return savage_do_init_bci(dev, init);
- case SAVAGE_CLEANUP_BCI:
- return savage_do_cleanup_bci(dev);
- }
-
- return -EINVAL;
-}
-
-static int savage_bci_event_emit(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- drm_savage_event_emit_t *event = data;
-
- DRM_DEBUG("\n");
-
- LOCK_TEST_WITH_RETURN(dev, file_priv);
-
- event->count = savage_bci_emit_event(dev_priv, event->flags);
- event->count |= dev_priv->event_wrap << 16;
-
- return 0;
-}
-
-static int savage_bci_event_wait(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- drm_savage_event_wait_t *event = data;
- unsigned int event_e, hw_e;
- unsigned int event_w, hw_w;
-
- DRM_DEBUG("\n");
-
- UPDATE_EVENT_COUNTER();
- if (dev_priv->status_ptr)
- hw_e = dev_priv->status_ptr[1] & 0xffff;
- else
- hw_e = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
- hw_w = dev_priv->event_wrap;
- if (hw_e > dev_priv->event_counter)
- hw_w--; /* hardware hasn't passed the last wrap yet */
-
- event_e = event->count & 0xffff;
- event_w = event->count >> 16;
-
- /* Don't need to wait if
- * - event counter wrapped since the event was emitted or
- * - the hardware has advanced up to or over the event to wait for.
- */
- if (event_w < hw_w || (event_w == hw_w && event_e <= hw_e))
- return 0;
- else
- return dev_priv->wait_evnt(dev_priv, event_e);
-}
-
-/*
- * DMA buffer management
- */
-
-static int savage_bci_get_buffers(struct drm_device *dev,
- struct drm_file *file_priv,
- struct drm_dma *d)
-{
- struct drm_buf *buf;
- int i;
-
- for (i = d->granted_count; i < d->request_count; i++) {
- buf = savage_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;
-}
-
-int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_device_dma *dma = dev->dma;
- struct drm_dma *d = data;
- int ret = 0;
-
- LOCK_TEST_WITH_RETURN(dev, file_priv);
-
- /* Please don't send us buffers.
- */
- if (d->send_count != 0) {
- DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
- DRM_CURRENTPID, d->send_count);
- return -EINVAL;
- }
-
- /* We'll send you buffers.
- */
- if (d->request_count < 0 || d->request_count > dma->buf_count) {
- DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
- DRM_CURRENTPID, d->request_count, dma->buf_count);
- return -EINVAL;
- }
-
- d->granted_count = 0;
-
- if (d->request_count) {
- ret = savage_bci_get_buffers(dev, file_priv, d);
- }
-
- return ret;
-}
-
-void savage_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv)
-{
- struct drm_device_dma *dma = dev->dma;
- drm_savage_private_t *dev_priv = dev->dev_private;
- int i;
-
- if (!dma)
- return;
- if (!dev_priv)
- return;
- if (!dma->buflist)
- return;
-
- /*i830_flush_queue(dev); */
-
- for (i = 0; i < dma->buf_count; i++) {
- struct drm_buf *buf = dma->buflist[i];
- drm_savage_buf_priv_t *buf_priv = buf->dev_private;
-
- if (buf->file_priv == file_priv && buf_priv &&
- buf_priv->next == NULL && buf_priv->prev == NULL) {
- uint16_t event;
- DRM_DEBUG("reclaimed from client\n");
- event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
- SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
- savage_freelist_put(dev, buf);
- }
- }
-
- drm_core_reclaim_buffers(dev, file_priv);
-}
-
-struct drm_ioctl_desc savage_ioctls[] = {
- DRM_IOCTL_DEF(DRM_SAVAGE_BCI_INIT, savage_bci_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
- DRM_IOCTL_DEF(DRM_SAVAGE_BCI_CMDBUF, savage_bci_cmdbuf, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_EMIT, savage_bci_event_emit, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_WAIT, savage_bci_event_wait, DRM_AUTH),
-};
-
-int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls);