File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/gpu/drm/savage/Makefile b/drivers/gpu/drm/savage/Makefile
new file mode 100644
index 0000000..d8f84ac
--- /dev/null
+++ b/drivers/gpu/drm/savage/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for the drm device driver. This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+ccflags-y = -Iinclude/drm
+savage-y := savage_drv.o savage_bci.o savage_state.o
+
+obj-$(CONFIG_DRM_SAVAGE)+= savage.o
+
diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c
new file mode 100644
index 0000000..d47dff9
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_bci.c
@@ -0,0 +1,1083 @@
+/* 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 <drm/drmP.h>
+#include <drm/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++) {
+ mb();
+ 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++) {
+ mb();
+ 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 = kmalloc(sizeof(drm_savage_dma_page_t) *
+ dev_priv->nr_dma_pages, GFP_KERNEL);
+ 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--;
+ }
+ }
+
+ mb();
+
+ /* 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 = kzalloc(sizeof(drm_savage_private_t), GFP_KERNEL);
+ if (dev_priv == NULL)
+ return -ENOMEM;
+
+ dev->dev_private = (void *)dev_priv;
+
+ dev_priv->chipset = (enum savage_family)chipset;
+
+ pci_set_master(dev->pdev);
+
+ return 0;
+}
+
+
+/*
+ * Initialize mappings. On Savage4 and SavageIX the alignment
+ * and size of the aperture is not suitable for automatic MTRR setup
+ * in drm_legacy_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;
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ fb_rsrc = 0;
+ fb_base = pci_resource_start(dev->pdev, 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 (pci_resource_len(dev->pdev, 0) == 0x08000000) {
+ /* Don't make MMIO write-cobining! We need 3
+ * MTRRs. */
+ dev_priv->mtrr_handles[0] =
+ arch_phys_wc_add(fb_base, 0x01000000);
+ dev_priv->mtrr_handles[1] =
+ arch_phys_wc_add(fb_base + 0x02000000,
+ 0x02000000);
+ dev_priv->mtrr_handles[2] =
+ arch_phys_wc_add(fb_base + 0x04000000,
+ 0x04000000);
+ } else {
+ DRM_ERROR("strange pci_resource_len %08llx\n",
+ (unsigned long long)
+ pci_resource_len(dev->pdev, 0));
+ }
+ } else if (dev_priv->chipset != S3_SUPERSAVAGE &&
+ dev_priv->chipset != S3_SAVAGE2000) {
+ mmio_base = pci_resource_start(dev->pdev, 0);
+ fb_rsrc = 1;
+ fb_base = pci_resource_start(dev->pdev, 1);
+ fb_size = SAVAGE_FB_SIZE_S4;
+ aper_rsrc = 1;
+ aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
+ /* this should always be true */
+ if (pci_resource_len(dev->pdev, 1) == 0x08000000) {
+ /* Can use one MTRR to cover both fb and
+ * aperture. */
+ dev_priv->mtrr_handles[0] =
+ arch_phys_wc_add(fb_base,
+ 0x08000000);
+ } else {
+ DRM_ERROR("strange pci_resource_len %08llx\n",
+ (unsigned long long)
+ pci_resource_len(dev->pdev, 1));
+ }
+ } else {
+ mmio_base = pci_resource_start(dev->pdev, 0);
+ fb_rsrc = 1;
+ fb_base = pci_resource_start(dev->pdev, 1);
+ fb_size = pci_resource_len(dev->pdev, 1);
+ aper_rsrc = 2;
+ aperture_base = pci_resource_start(dev->pdev, 2);
+ /* Automatic MTRR setup will do the right thing. */
+ }
+
+ ret = drm_legacy_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE,
+ _DRM_REGISTERS, _DRM_READ_ONLY,
+ &dev_priv->mmio);
+ if (ret)
+ return ret;
+
+ ret = drm_legacy_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER,
+ _DRM_WRITE_COMBINING, &dev_priv->fb);
+ if (ret)
+ return ret;
+
+ ret = drm_legacy_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
+ _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
+ &dev_priv->aperture);
+ 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) {
+ arch_phys_wc_del(dev_priv->mtrr_handles[i]);
+ dev_priv->mtrr_handles[i] = 0;
+ }
+}
+
+int savage_driver_unload(struct drm_device *dev)
+{
+ drm_savage_private_t *dev_priv = dev->dev_private;
+
+ kfree(dev_priv);
+
+ 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_legacy_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_legacy_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_legacy_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_legacy_ioremap(dev->agp_buffer_map, dev);
+ if (!dev->agp_buffer_map->handle) {
+ 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_legacy_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_legacy_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_legacy_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 = kmalloc(SAVAGE_FAKE_DMA_SIZE,
+ GFP_KERNEL);
+ 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) {
+ kfree(dev_priv->fake_dma.handle);
+ } 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_legacy_ioremapfree(dev_priv->cmd_dma, dev);
+
+ if (dev_priv->dma_type == SAVAGE_DMA_AGP &&
+ dev->agp_buffer_map && dev->agp_buffer_map->handle) {
+ drm_legacy_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;
+ }
+
+ kfree(dev_priv->dma_pages);
+
+ 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 (copy_to_user(&d->request_indices[i],
+ &buf->idx, sizeof(buf->idx)))
+ return -EFAULT;
+ if (copy_to_user(&d->request_sizes[i],
+ &buf->total, sizeof(buf->total)))
+ return -EFAULT;
+
+ d->granted_count++;
+ }
+ return 0;
+}
+
+int 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 release_idlelock = 0;
+ int i;
+
+ if (!dma)
+ return;
+ if (!dev_priv)
+ return;
+ if (!dma->buflist)
+ return;
+
+ if (file_priv->master && file_priv->master->lock.hw_lock) {
+ drm_legacy_idlelock_take(&file_priv->master->lock);
+ release_idlelock = 1;
+ }
+
+ 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);
+ }
+ }
+
+ if (release_idlelock)
+ drm_legacy_idlelock_release(&file_priv->master->lock);
+}
+
+const struct drm_ioctl_desc savage_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(SAVAGE_BCI_INIT, savage_bci_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF_DRV(SAVAGE_BCI_CMDBUF, savage_bci_cmdbuf, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SAVAGE_BCI_EVENT_EMIT, savage_bci_event_emit, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SAVAGE_BCI_EVENT_WAIT, savage_bci_event_wait, DRM_AUTH),
+};
+
+int savage_max_ioctl = ARRAY_SIZE(savage_ioctls);
diff --git a/drivers/gpu/drm/savage/savage_drv.c b/drivers/gpu/drm/savage/savage_drv.c
new file mode 100644
index 0000000..21aed1f
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_drv.c
@@ -0,0 +1,93 @@
+/* savage_drv.c -- Savage driver for Linux
+ *
+ * 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 <linux/module.h>
+
+#include <drm/drmP.h>
+#include <drm/savage_drm.h>
+#include "savage_drv.h"
+
+#include <drm/drm_pciids.h>
+
+static struct pci_device_id pciidlist[] = {
+ savage_PCI_IDS
+};
+
+static const struct file_operations savage_driver_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+ .mmap = drm_legacy_mmap,
+ .poll = drm_poll,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .llseek = noop_llseek,
+};
+
+static struct drm_driver driver = {
+ .driver_features =
+ DRIVER_USE_AGP | DRIVER_HAVE_DMA | DRIVER_PCI_DMA,
+ .dev_priv_size = sizeof(drm_savage_buf_priv_t),
+ .load = savage_driver_load,
+ .firstopen = savage_driver_firstopen,
+ .preclose = savage_reclaim_buffers,
+ .lastclose = savage_driver_lastclose,
+ .unload = savage_driver_unload,
+ .set_busid = drm_pci_set_busid,
+ .ioctls = savage_ioctls,
+ .dma_ioctl = savage_bci_buffers,
+ .fops = &savage_driver_fops,
+ .name = DRIVER_NAME,
+ .desc = DRIVER_DESC,
+ .date = DRIVER_DATE,
+ .major = DRIVER_MAJOR,
+ .minor = DRIVER_MINOR,
+ .patchlevel = DRIVER_PATCHLEVEL,
+};
+
+static struct pci_driver savage_pci_driver = {
+ .name = DRIVER_NAME,
+ .id_table = pciidlist,
+};
+
+static int __init savage_init(void)
+{
+ driver.num_ioctls = savage_max_ioctl;
+ return drm_pci_init(&driver, &savage_pci_driver);
+}
+
+static void __exit savage_exit(void)
+{
+ drm_pci_exit(&driver, &savage_pci_driver);
+}
+
+module_init(savage_init);
+module_exit(savage_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/savage/savage_drv.h b/drivers/gpu/drm/savage/savage_drv.h
new file mode 100644
index 0000000..37b6995
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_drv.h
@@ -0,0 +1,574 @@
+/* savage_drv.h -- Private header for the savage driver */
+/*
+ * 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.
+ */
+
+#ifndef __SAVAGE_DRV_H__
+#define __SAVAGE_DRV_H__
+
+#include <drm/drm_legacy.h>
+
+#define DRIVER_AUTHOR "Felix Kuehling"
+
+#define DRIVER_NAME "savage"
+#define DRIVER_DESC "Savage3D/MX/IX, Savage4, SuperSavage, Twister, ProSavage[DDR]"
+#define DRIVER_DATE "20050313"
+
+#define DRIVER_MAJOR 2
+#define DRIVER_MINOR 4
+#define DRIVER_PATCHLEVEL 1
+/* Interface history:
+ *
+ * 1.x The DRM driver from the VIA/S3 code drop, basically a dummy
+ * 2.0 The first real DRM
+ * 2.1 Scissors registers managed by the DRM, 3D operations clipped by
+ * cliprects of the cmdbuf ioctl
+ * 2.2 Implemented SAVAGE_CMD_DMA_IDX and SAVAGE_CMD_VB_IDX
+ * 2.3 Event counters used by BCI_EVENT_EMIT/WAIT ioctls are now 32 bits
+ * wide and thus very long lived (unlikely to ever wrap). The size
+ * in the struct was 32 bits before, but only 16 bits were used
+ * 2.4 Implemented command DMA. Now drm_savage_init_t.cmd_dma_offset is
+ * actually used
+ */
+
+typedef struct drm_savage_age {
+ uint16_t event;
+ unsigned int wrap;
+} drm_savage_age_t;
+
+typedef struct drm_savage_buf_priv {
+ struct drm_savage_buf_priv *next;
+ struct drm_savage_buf_priv *prev;
+ drm_savage_age_t age;
+ struct drm_buf *buf;
+} drm_savage_buf_priv_t;
+
+typedef struct drm_savage_dma_page {
+ drm_savage_age_t age;
+ unsigned int used, flushed;
+} drm_savage_dma_page_t;
+#define SAVAGE_DMA_PAGE_SIZE 1024 /* in dwords */
+/* Fake DMA buffer size in bytes. 4 pages. Allows a maximum command
+ * size of 16kbytes or 4k entries. Minimum requirement would be
+ * 10kbytes for 255 40-byte vertices in one drawing command. */
+#define SAVAGE_FAKE_DMA_SIZE (SAVAGE_DMA_PAGE_SIZE*4*4)
+
+/* interesting bits of hardware state that are saved in dev_priv */
+typedef union {
+ struct drm_savage_common_state {
+ uint32_t vbaddr;
+ } common;
+ struct {
+ unsigned char pad[sizeof(struct drm_savage_common_state)];
+ uint32_t texctrl, texaddr;
+ uint32_t scstart, new_scstart;
+ uint32_t scend, new_scend;
+ } s3d;
+ struct {
+ unsigned char pad[sizeof(struct drm_savage_common_state)];
+ uint32_t texdescr, texaddr0, texaddr1;
+ uint32_t drawctrl0, new_drawctrl0;
+ uint32_t drawctrl1, new_drawctrl1;
+ } s4;
+} drm_savage_state_t;
+
+/* these chip tags should match the ones in the 2D driver in savage_regs.h. */
+enum savage_family {
+ S3_UNKNOWN = 0,
+ S3_SAVAGE3D,
+ S3_SAVAGE_MX,
+ S3_SAVAGE4,
+ S3_PROSAVAGE,
+ S3_TWISTER,
+ S3_PROSAVAGEDDR,
+ S3_SUPERSAVAGE,
+ S3_SAVAGE2000,
+ S3_LAST
+};
+
+extern const struct drm_ioctl_desc savage_ioctls[];
+extern int savage_max_ioctl;
+
+#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX))
+
+#define S3_SAVAGE4_SERIES(chip) ((chip==S3_SAVAGE4) \
+ || (chip==S3_PROSAVAGE) \
+ || (chip==S3_TWISTER) \
+ || (chip==S3_PROSAVAGEDDR))
+
+#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE))
+
+#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000))
+
+#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) \
+ ||(chip==S3_PROSAVAGEDDR))
+
+/* flags */
+#define SAVAGE_IS_AGP 1
+
+typedef struct drm_savage_private {
+ drm_savage_sarea_t *sarea_priv;
+
+ drm_savage_buf_priv_t head, tail;
+
+ /* who am I? */
+ enum savage_family chipset;
+
+ unsigned int cob_size;
+ unsigned int bci_threshold_lo, bci_threshold_hi;
+ unsigned int dma_type;
+
+ /* frame buffer layout */
+ unsigned int fb_bpp;
+ unsigned int front_offset, front_pitch;
+ unsigned int back_offset, back_pitch;
+ unsigned int depth_bpp;
+ unsigned int depth_offset, depth_pitch;
+
+ /* bitmap descriptors for swap and clear */
+ unsigned int front_bd, back_bd, depth_bd;
+
+ /* local textures */
+ unsigned int texture_offset;
+ unsigned int texture_size;
+
+ /* memory regions in physical memory */
+ drm_local_map_t *sarea;
+ drm_local_map_t *mmio;
+ drm_local_map_t *fb;
+ drm_local_map_t *aperture;
+ drm_local_map_t *status;
+ drm_local_map_t *agp_textures;
+ drm_local_map_t *cmd_dma;
+ drm_local_map_t fake_dma;
+
+ int mtrr_handles[3];
+
+ /* BCI and status-related stuff */
+ volatile uint32_t *status_ptr, *bci_ptr;
+ uint32_t status_used_mask;
+ uint16_t event_counter;
+ unsigned int event_wrap;
+
+ /* Savage4 command DMA */
+ drm_savage_dma_page_t *dma_pages;
+ unsigned int nr_dma_pages, first_dma_page, current_dma_page;
+ drm_savage_age_t last_dma_age;
+
+ /* saved hw state for global/local check on S3D */
+ uint32_t hw_draw_ctrl, hw_zbuf_ctrl;
+ /* and for scissors (global, so don't emit if not changed) */
+ uint32_t hw_scissors_start, hw_scissors_end;
+
+ drm_savage_state_t state;
+
+ /* after emitting a wait cmd Savage3D needs 63 nops before next DMA */
+ unsigned int waiting;
+
+ /* config/hardware-dependent function pointers */
+ int (*wait_fifo) (struct drm_savage_private * dev_priv, unsigned int n);
+ int (*wait_evnt) (struct drm_savage_private * dev_priv, uint16_t e);
+ /* Err, there is a macro wait_event in include/linux/wait.h.
+ * Avoid unwanted macro expansion. */
+ void (*emit_clip_rect) (struct drm_savage_private * dev_priv,
+ const struct drm_clip_rect * pbox);
+ void (*dma_flush) (struct drm_savage_private * dev_priv);
+} drm_savage_private_t;
+
+/* ioctls */
+extern int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv);
+extern int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);
+
+/* BCI functions */
+extern uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv,
+ unsigned int flags);
+extern void savage_freelist_put(struct drm_device * dev, struct drm_buf * buf);
+extern void savage_dma_reset(drm_savage_private_t * dev_priv);
+extern void savage_dma_wait(drm_savage_private_t * dev_priv, unsigned int page);
+extern uint32_t *savage_dma_alloc(drm_savage_private_t * dev_priv,
+ unsigned int n);
+extern int savage_driver_load(struct drm_device *dev, unsigned long chipset);
+extern int savage_driver_firstopen(struct drm_device *dev);
+extern void savage_driver_lastclose(struct drm_device *dev);
+extern int savage_driver_unload(struct drm_device *dev);
+extern void savage_reclaim_buffers(struct drm_device *dev,
+ struct drm_file *file_priv);
+
+/* state functions */
+extern void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
+ const struct drm_clip_rect * pbox);
+extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
+ const struct drm_clip_rect * pbox);
+
+#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */
+#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */
+#define SAVAGE_MMIO_SIZE 0x00080000 /* 512kB */
+#define SAVAGE_APERTURE_OFFSET 0x02000000 /* 32MB */
+#define SAVAGE_APERTURE_SIZE 0x05000000 /* 5 tiled surfaces, 16MB each */
+
+#define SAVAGE_BCI_OFFSET 0x00010000 /* offset of the BCI region
+ * inside the MMIO region */
+#define SAVAGE_BCI_FIFO_SIZE 32 /* number of entries in on-chip
+ * BCI FIFO */
+
+/*
+ * MMIO registers
+ */
+#define SAVAGE_STATUS_WORD0 0x48C00
+#define SAVAGE_STATUS_WORD1 0x48C04
+#define SAVAGE_ALT_STATUS_WORD0 0x48C60
+
+#define SAVAGE_FIFO_USED_MASK_S3D 0x0001ffff
+#define SAVAGE_FIFO_USED_MASK_S4 0x001fffff
+
+/* Copied from savage_bci.h in the 2D driver with some renaming. */
+
+/* Bitmap descriptors */
+#define SAVAGE_BD_STRIDE_SHIFT 0
+#define SAVAGE_BD_BPP_SHIFT 16
+#define SAVAGE_BD_TILE_SHIFT 24
+#define SAVAGE_BD_BW_DISABLE (1<<28)
+/* common: */
+#define SAVAGE_BD_TILE_LINEAR 0
+/* savage4, MX, IX, 3D */
+#define SAVAGE_BD_TILE_16BPP 2
+#define SAVAGE_BD_TILE_32BPP 3
+/* twister, prosavage, DDR, supersavage, 2000 */
+#define SAVAGE_BD_TILE_DEST 1
+#define SAVAGE_BD_TILE_TEXTURE 2
+/* GBD - BCI enable */
+/* savage4, MX, IX, 3D */
+#define SAVAGE_GBD_BCI_ENABLE 8
+/* twister, prosavage, DDR, supersavage, 2000 */
+#define SAVAGE_GBD_BCI_ENABLE_TWISTER 0
+
+#define SAVAGE_GBD_BIG_ENDIAN 4
+#define SAVAGE_GBD_LITTLE_ENDIAN 0
+#define SAVAGE_GBD_64 1
+
+/* Global Bitmap Descriptor */
+#define SAVAGE_BCI_GLB_BD_LOW 0x8168
+#define SAVAGE_BCI_GLB_BD_HIGH 0x816C
+
+/*
+ * BCI registers
+ */
+/* Savage4/Twister/ProSavage 3D registers */
+#define SAVAGE_DRAWLOCALCTRL_S4 0x1e
+#define SAVAGE_TEXPALADDR_S4 0x1f
+#define SAVAGE_TEXCTRL0_S4 0x20
+#define SAVAGE_TEXCTRL1_S4 0x21
+#define SAVAGE_TEXADDR0_S4 0x22
+#define SAVAGE_TEXADDR1_S4 0x23
+#define SAVAGE_TEXBLEND0_S4 0x24
+#define SAVAGE_TEXBLEND1_S4 0x25
+#define SAVAGE_TEXXPRCLR_S4 0x26 /* never used */
+#define SAVAGE_TEXDESCR_S4 0x27
+#define SAVAGE_FOGTABLE_S4 0x28
+#define SAVAGE_FOGCTRL_S4 0x30
+#define SAVAGE_STENCILCTRL_S4 0x31
+#define SAVAGE_ZBUFCTRL_S4 0x32
+#define SAVAGE_ZBUFOFF_S4 0x33
+#define SAVAGE_DESTCTRL_S4 0x34
+#define SAVAGE_DRAWCTRL0_S4 0x35
+#define SAVAGE_DRAWCTRL1_S4 0x36
+#define SAVAGE_ZWATERMARK_S4 0x37
+#define SAVAGE_DESTTEXRWWATERMARK_S4 0x38
+#define SAVAGE_TEXBLENDCOLOR_S4 0x39
+/* Savage3D/MX/IX 3D registers */
+#define SAVAGE_TEXPALADDR_S3D 0x18
+#define SAVAGE_TEXXPRCLR_S3D 0x19 /* never used */
+#define SAVAGE_TEXADDR_S3D 0x1A
+#define SAVAGE_TEXDESCR_S3D 0x1B
+#define SAVAGE_TEXCTRL_S3D 0x1C
+#define SAVAGE_FOGTABLE_S3D 0x20
+#define SAVAGE_FOGCTRL_S3D 0x30
+#define SAVAGE_DRAWCTRL_S3D 0x31
+#define SAVAGE_ZBUFCTRL_S3D 0x32
+#define SAVAGE_ZBUFOFF_S3D 0x33
+#define SAVAGE_DESTCTRL_S3D 0x34
+#define SAVAGE_SCSTART_S3D 0x35
+#define SAVAGE_SCEND_S3D 0x36
+#define SAVAGE_ZWATERMARK_S3D 0x37
+#define SAVAGE_DESTTEXRWWATERMARK_S3D 0x38
+/* common stuff */
+#define SAVAGE_VERTBUFADDR 0x3e
+#define SAVAGE_BITPLANEWTMASK 0xd7
+#define SAVAGE_DMABUFADDR 0x51
+
+/* texture enable bits (needed for tex addr checking) */
+#define SAVAGE_TEXCTRL_TEXEN_MASK 0x00010000 /* S3D */
+#define SAVAGE_TEXDESCR_TEX0EN_MASK 0x02000000 /* S4 */
+#define SAVAGE_TEXDESCR_TEX1EN_MASK 0x04000000 /* S4 */
+
+/* Global fields in Savage4/Twister/ProSavage 3D registers:
+ *
+ * All texture registers and DrawLocalCtrl are local. All other
+ * registers are global. */
+
+/* Global fields in Savage3D/MX/IX 3D registers:
+ *
+ * All texture registers are local. DrawCtrl and ZBufCtrl are
+ * partially local. All other registers are global.
+ *
+ * DrawCtrl global fields: cullMode, alphaTestCmpFunc, alphaTestEn, alphaRefVal
+ * ZBufCtrl global fields: zCmpFunc, zBufEn
+ */
+#define SAVAGE_DRAWCTRL_S3D_GLOBAL 0x03f3c00c
+#define SAVAGE_ZBUFCTRL_S3D_GLOBAL 0x00000027
+
+/* Masks for scissor bits (drawCtrl[01] on s4, scissorStart/End on s3d)
+ */
+#define SAVAGE_SCISSOR_MASK_S4 0x00fff7ff
+#define SAVAGE_SCISSOR_MASK_S3D 0x07ff07ff
+
+/*
+ * BCI commands
+ */
+#define BCI_CMD_NOP 0x40000000
+#define BCI_CMD_RECT 0x48000000
+#define BCI_CMD_RECT_XP 0x01000000
+#define BCI_CMD_RECT_YP 0x02000000
+#define BCI_CMD_SCANLINE 0x50000000
+#define BCI_CMD_LINE 0x5C000000
+#define BCI_CMD_LINE_LAST_PIXEL 0x58000000
+#define BCI_CMD_BYTE_TEXT 0x63000000
+#define BCI_CMD_NT_BYTE_TEXT 0x67000000
+#define BCI_CMD_BIT_TEXT 0x6C000000
+#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF)
+#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16))
+#define BCI_CMD_SEND_COLOR 0x00008000
+
+#define BCI_CMD_CLIP_NONE 0x00000000
+#define BCI_CMD_CLIP_CURRENT 0x00002000
+#define BCI_CMD_CLIP_LR 0x00004000
+#define BCI_CMD_CLIP_NEW 0x00006000
+
+#define BCI_CMD_DEST_GBD 0x00000000
+#define BCI_CMD_DEST_PBD 0x00000800
+#define BCI_CMD_DEST_PBD_NEW 0x00000C00
+#define BCI_CMD_DEST_SBD 0x00001000
+#define BCI_CMD_DEST_SBD_NEW 0x00001400
+
+#define BCI_CMD_SRC_TRANSPARENT 0x00000200
+#define BCI_CMD_SRC_SOLID 0x00000000
+#define BCI_CMD_SRC_GBD 0x00000020
+#define BCI_CMD_SRC_COLOR 0x00000040
+#define BCI_CMD_SRC_MONO 0x00000060
+#define BCI_CMD_SRC_PBD_COLOR 0x00000080
+#define BCI_CMD_SRC_PBD_MONO 0x000000A0
+#define BCI_CMD_SRC_PBD_COLOR_NEW 0x000000C0
+#define BCI_CMD_SRC_PBD_MONO_NEW 0x000000E0
+#define BCI_CMD_SRC_SBD_COLOR 0x00000100
+#define BCI_CMD_SRC_SBD_MONO 0x00000120
+#define BCI_CMD_SRC_SBD_COLOR_NEW 0x00000140
+#define BCI_CMD_SRC_SBD_MONO_NEW 0x00000160
+
+#define BCI_CMD_PAT_TRANSPARENT 0x00000010
+#define BCI_CMD_PAT_NONE 0x00000000
+#define BCI_CMD_PAT_COLOR 0x00000002
+#define BCI_CMD_PAT_MONO 0x00000003
+#define BCI_CMD_PAT_PBD_COLOR 0x00000004
+#define BCI_CMD_PAT_PBD_MONO 0x00000005
+#define BCI_CMD_PAT_PBD_COLOR_NEW 0x00000006
+#define BCI_CMD_PAT_PBD_MONO_NEW 0x00000007
+#define BCI_CMD_PAT_SBD_COLOR 0x00000008
+#define BCI_CMD_PAT_SBD_MONO 0x00000009
+#define BCI_CMD_PAT_SBD_COLOR_NEW 0x0000000A
+#define BCI_CMD_PAT_SBD_MONO_NEW 0x0000000B
+
+#define BCI_BD_BW_DISABLE 0x10000000
+#define BCI_BD_TILE_MASK 0x03000000
+#define BCI_BD_TILE_NONE 0x00000000
+#define BCI_BD_TILE_16 0x02000000
+#define BCI_BD_TILE_32 0x03000000
+#define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF)
+#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16))
+#define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF)
+#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF))
+
+#define BCI_CMD_SET_REGISTER 0x96000000
+
+#define BCI_CMD_WAIT 0xC0000000
+#define BCI_CMD_WAIT_3D 0x00010000
+#define BCI_CMD_WAIT_2D 0x00020000
+
+#define BCI_CMD_UPDATE_EVENT_TAG 0x98000000
+
+#define BCI_CMD_DRAW_PRIM 0x80000000
+#define BCI_CMD_DRAW_INDEXED_PRIM 0x88000000
+#define BCI_CMD_DRAW_CONT 0x01000000
+#define BCI_CMD_DRAW_TRILIST 0x00000000
+#define BCI_CMD_DRAW_TRISTRIP 0x02000000
+#define BCI_CMD_DRAW_TRIFAN 0x04000000
+#define BCI_CMD_DRAW_SKIPFLAGS 0x000000ff
+#define BCI_CMD_DRAW_NO_Z 0x00000001
+#define BCI_CMD_DRAW_NO_W 0x00000002
+#define BCI_CMD_DRAW_NO_CD 0x00000004
+#define BCI_CMD_DRAW_NO_CS 0x00000008
+#define BCI_CMD_DRAW_NO_U0 0x00000010
+#define BCI_CMD_DRAW_NO_V0 0x00000020
+#define BCI_CMD_DRAW_NO_UV0 0x00000030
+#define BCI_CMD_DRAW_NO_U1 0x00000040
+#define BCI_CMD_DRAW_NO_V1 0x00000080
+#define BCI_CMD_DRAW_NO_UV1 0x000000c0
+
+#define BCI_CMD_DMA 0xa8000000
+
+#define BCI_W_H(w, h) ((((h) << 16) | (w)) & 0x0FFF0FFF)
+#define BCI_X_Y(x, y) ((((y) << 16) | (x)) & 0x0FFF0FFF)
+#define BCI_X_W(x, y) ((((w) << 16) | (x)) & 0x0FFF0FFF)
+#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF)
+#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF)
+#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF)
+
+#define BCI_LINE_X_Y(x, y) (((y) << 16) | ((x) & 0xFFFF))
+#define BCI_LINE_STEPS(diag, axi) (((axi) << 16) | ((diag) & 0xFFFF))
+#define BCI_LINE_MISC(maj, ym, xp, yp, err) \
+ (((maj) & 0x1FFF) | \
+ ((ym) ? 1<<13 : 0) | \
+ ((xp) ? 1<<14 : 0) | \
+ ((yp) ? 1<<15 : 0) | \
+ ((err) << 16))
+
+/*
+ * common commands
+ */
+#define BCI_SET_REGISTERS( first, n ) \
+ BCI_WRITE(BCI_CMD_SET_REGISTER | \
+ ((uint32_t)(n) & 0xff) << 16 | \
+ ((uint32_t)(first) & 0xffff))
+#define DMA_SET_REGISTERS( first, n ) \
+ DMA_WRITE(BCI_CMD_SET_REGISTER | \
+ ((uint32_t)(n) & 0xff) << 16 | \
+ ((uint32_t)(first) & 0xffff))
+
+#define BCI_DRAW_PRIMITIVE(n, type, skip) \
+ BCI_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
+ ((n) << 16))
+#define DMA_DRAW_PRIMITIVE(n, type, skip) \
+ DMA_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
+ ((n) << 16))
+
+#define BCI_DRAW_INDICES_S3D(n, type, i0) \
+ BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
+ ((n) << 16) | (i0))
+
+#define BCI_DRAW_INDICES_S4(n, type, skip) \
+ BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
+ (skip) | ((n) << 16))
+
+#define BCI_DMA(n) \
+ BCI_WRITE(BCI_CMD_DMA | (((n) >> 1) - 1))
+
+/*
+ * access to MMIO
+ */
+#define SAVAGE_READ(reg) DRM_READ32( dev_priv->mmio, (reg) )
+#define SAVAGE_WRITE(reg) DRM_WRITE32( dev_priv->mmio, (reg) )
+
+/*
+ * access to the burst command interface (BCI)
+ */
+#define SAVAGE_BCI_DEBUG 1
+
+#define BCI_LOCALS volatile uint32_t *bci_ptr;
+
+#define BEGIN_BCI( n ) do { \
+ dev_priv->wait_fifo(dev_priv, (n)); \
+ bci_ptr = dev_priv->bci_ptr; \
+} while(0)
+
+#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val)
+
+/*
+ * command DMA support
+ */
+#define SAVAGE_DMA_DEBUG 1
+
+#define DMA_LOCALS uint32_t *dma_ptr;
+
+#define BEGIN_DMA( n ) do { \
+ unsigned int cur = dev_priv->current_dma_page; \
+ unsigned int rest = SAVAGE_DMA_PAGE_SIZE - \
+ dev_priv->dma_pages[cur].used; \
+ if ((n) > rest) { \
+ dma_ptr = savage_dma_alloc(dev_priv, (n)); \
+ } else { /* fast path for small allocations */ \
+ dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + \
+ cur * SAVAGE_DMA_PAGE_SIZE + \
+ dev_priv->dma_pages[cur].used; \
+ if (dev_priv->dma_pages[cur].used == 0) \
+ savage_dma_wait(dev_priv, cur); \
+ dev_priv->dma_pages[cur].used += (n); \
+ } \
+} while(0)
+
+#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val)
+
+#define DMA_COPY(src, n) do { \
+ memcpy(dma_ptr, (src), (n)*4); \
+ dma_ptr += n; \
+} while(0)
+
+#if SAVAGE_DMA_DEBUG
+#define DMA_COMMIT() do { \
+ unsigned int cur = dev_priv->current_dma_page; \
+ uint32_t *expected = (uint32_t *)dev_priv->cmd_dma->handle + \
+ cur * SAVAGE_DMA_PAGE_SIZE + \
+ dev_priv->dma_pages[cur].used; \
+ if (dma_ptr != expected) { \
+ DRM_ERROR("DMA allocation and use don't match: " \
+ "%p != %p\n", expected, dma_ptr); \
+ savage_dma_reset(dev_priv); \
+ } \
+} while(0)
+#else
+#define DMA_COMMIT() do {/* nothing */} while(0)
+#endif
+
+#define DMA_FLUSH() dev_priv->dma_flush(dev_priv)
+
+/* Buffer aging via event tag
+ */
+
+#define UPDATE_EVENT_COUNTER( ) do { \
+ if (dev_priv->status_ptr) { \
+ uint16_t count; \
+ /* coordinate with Xserver */ \
+ count = dev_priv->status_ptr[1023]; \
+ if (count < dev_priv->event_counter) \
+ dev_priv->event_wrap++; \
+ dev_priv->event_counter = count; \
+ } \
+} while(0)
+
+#define SET_AGE( age, e, w ) do { \
+ (age)->event = e; \
+ (age)->wrap = w; \
+} while(0)
+
+#define TEST_AGE( age, e, w ) \
+ ( (age)->wrap < (w) || ( (age)->wrap == (w) && (age)->event <= (e) ) )
+
+#endif /* __SAVAGE_DRV_H__ */
diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c
new file mode 100644
index 0000000..c01ad0a
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_state.c
@@ -0,0 +1,1163 @@
+/* savage_state.c -- State and drawing 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 <drm/drmP.h>
+#include <drm/savage_drm.h>
+#include "savage_drv.h"
+
+void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
+ const struct drm_clip_rect * pbox)
+{
+ uint32_t scstart = dev_priv->state.s3d.new_scstart;
+ uint32_t scend = dev_priv->state.s3d.new_scend;
+ scstart = (scstart & ~SAVAGE_SCISSOR_MASK_S3D) |
+ ((uint32_t) pbox->x1 & 0x000007ff) |
+ (((uint32_t) pbox->y1 << 16) & 0x07ff0000);
+ scend = (scend & ~SAVAGE_SCISSOR_MASK_S3D) |
+ (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
+ ((((uint32_t) pbox->y2 - 1) << 16) & 0x07ff0000);
+ if (scstart != dev_priv->state.s3d.scstart ||
+ scend != dev_priv->state.s3d.scend) {
+ DMA_LOCALS;
+ BEGIN_DMA(4);
+ DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
+ DMA_SET_REGISTERS(SAVAGE_SCSTART_S3D, 2);
+ DMA_WRITE(scstart);
+ DMA_WRITE(scend);
+ dev_priv->state.s3d.scstart = scstart;
+ dev_priv->state.s3d.scend = scend;
+ dev_priv->waiting = 1;
+ DMA_COMMIT();
+ }
+}
+
+void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
+ const struct drm_clip_rect * pbox)
+{
+ uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0;
+ uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1;
+ drawctrl0 = (drawctrl0 & ~SAVAGE_SCISSOR_MASK_S4) |
+ ((uint32_t) pbox->x1 & 0x000007ff) |
+ (((uint32_t) pbox->y1 << 12) & 0x00fff000);
+ drawctrl1 = (drawctrl1 & ~SAVAGE_SCISSOR_MASK_S4) |
+ (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
+ ((((uint32_t) pbox->y2 - 1) << 12) & 0x00fff000);
+ if (drawctrl0 != dev_priv->state.s4.drawctrl0 ||
+ drawctrl1 != dev_priv->state.s4.drawctrl1) {
+ DMA_LOCALS;
+ BEGIN_DMA(4);
+ DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
+ DMA_SET_REGISTERS(SAVAGE_DRAWCTRL0_S4, 2);
+ DMA_WRITE(drawctrl0);
+ DMA_WRITE(drawctrl1);
+ dev_priv->state.s4.drawctrl0 = drawctrl0;
+ dev_priv->state.s4.drawctrl1 = drawctrl1;
+ dev_priv->waiting = 1;
+ DMA_COMMIT();
+ }
+}
+
+static int savage_verify_texaddr(drm_savage_private_t * dev_priv, int unit,
+ uint32_t addr)
+{
+ if ((addr & 6) != 2) { /* reserved bits */
+ DRM_ERROR("bad texAddr%d %08x (reserved bits)\n", unit, addr);
+ return -EINVAL;
+ }
+ if (!(addr & 1)) { /* local */
+ addr &= ~7;
+ if (addr < dev_priv->texture_offset ||
+ addr >= dev_priv->texture_offset + dev_priv->texture_size) {
+ DRM_ERROR
+ ("bad texAddr%d %08x (local addr out of range)\n",
+ unit, addr);
+ return -EINVAL;
+ }
+ } else { /* AGP */
+ if (!dev_priv->agp_textures) {
+ DRM_ERROR("bad texAddr%d %08x (AGP not available)\n",
+ unit, addr);
+ return -EINVAL;
+ }
+ addr &= ~7;
+ if (addr < dev_priv->agp_textures->offset ||
+ addr >= (dev_priv->agp_textures->offset +
+ dev_priv->agp_textures->size)) {
+ DRM_ERROR
+ ("bad texAddr%d %08x (AGP addr out of range)\n",
+ unit, addr);
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+#define SAVE_STATE(reg,where) \
+ if(start <= reg && start+count > reg) \
+ dev_priv->state.where = regs[reg - start]
+#define SAVE_STATE_MASK(reg,where,mask) do { \
+ if(start <= reg && start+count > reg) { \
+ uint32_t tmp; \
+ tmp = regs[reg - start]; \
+ dev_priv->state.where = (tmp & (mask)) | \
+ (dev_priv->state.where & ~(mask)); \
+ } \
+} while (0)
+
+static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
+ unsigned int start, unsigned int count,
+ const uint32_t *regs)
+{
+ if (start < SAVAGE_TEXPALADDR_S3D ||
+ start + count - 1 > SAVAGE_DESTTEXRWWATERMARK_S3D) {
+ DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
+ start, start + count - 1);
+ return -EINVAL;
+ }
+
+ SAVE_STATE_MASK(SAVAGE_SCSTART_S3D, s3d.new_scstart,
+ ~SAVAGE_SCISSOR_MASK_S3D);
+ SAVE_STATE_MASK(SAVAGE_SCEND_S3D, s3d.new_scend,
+ ~SAVAGE_SCISSOR_MASK_S3D);
+
+ /* if any texture regs were changed ... */
+ if (start <= SAVAGE_TEXCTRL_S3D &&
+ start + count > SAVAGE_TEXPALADDR_S3D) {
+ /* ... check texture state */
+ SAVE_STATE(SAVAGE_TEXCTRL_S3D, s3d.texctrl);
+ SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr);
+ if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK)
+ return savage_verify_texaddr(dev_priv, 0,
+ dev_priv->state.s3d.texaddr);
+ }
+
+ return 0;
+}
+
+static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
+ unsigned int start, unsigned int count,
+ const uint32_t *regs)
+{
+ int ret = 0;
+
+ if (start < SAVAGE_DRAWLOCALCTRL_S4 ||
+ start + count - 1 > SAVAGE_TEXBLENDCOLOR_S4) {
+ DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
+ start, start + count - 1);
+ return -EINVAL;
+ }
+
+ SAVE_STATE_MASK(SAVAGE_DRAWCTRL0_S4, s4.new_drawctrl0,
+ ~SAVAGE_SCISSOR_MASK_S4);
+ SAVE_STATE_MASK(SAVAGE_DRAWCTRL1_S4, s4.new_drawctrl1,
+ ~SAVAGE_SCISSOR_MASK_S4);
+
+ /* if any texture regs were changed ... */
+ if (start <= SAVAGE_TEXDESCR_S4 &&
+ start + count > SAVAGE_TEXPALADDR_S4) {
+ /* ... check texture state */
+ SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr);
+ SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0);
+ SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1);
+ if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK)
+ ret |= savage_verify_texaddr(dev_priv, 0,
+ dev_priv->state.s4.texaddr0);
+ if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK)
+ ret |= savage_verify_texaddr(dev_priv, 1,
+ dev_priv->state.s4.texaddr1);
+ }
+
+ return ret;
+}
+
+#undef SAVE_STATE
+#undef SAVE_STATE_MASK
+
+static int savage_dispatch_state(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const uint32_t *regs)
+{
+ unsigned int count = cmd_header->state.count;
+ unsigned int start = cmd_header->state.start;
+ unsigned int count2 = 0;
+ unsigned int bci_size;
+ int ret;
+ DMA_LOCALS;
+
+ if (!count)
+ return 0;
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ ret = savage_verify_state_s3d(dev_priv, start, count, regs);
+ if (ret != 0)
+ return ret;
+ /* scissor regs are emitted in savage_dispatch_draw */
+ if (start < SAVAGE_SCSTART_S3D) {
+ if (start + count > SAVAGE_SCEND_S3D + 1)
+ count2 = count - (SAVAGE_SCEND_S3D + 1 - start);
+ if (start + count > SAVAGE_SCSTART_S3D)
+ count = SAVAGE_SCSTART_S3D - start;
+ } else if (start <= SAVAGE_SCEND_S3D) {
+ if (start + count > SAVAGE_SCEND_S3D + 1) {
+ count -= SAVAGE_SCEND_S3D + 1 - start;
+ start = SAVAGE_SCEND_S3D + 1;
+ } else
+ return 0;
+ }
+ } else {
+ ret = savage_verify_state_s4(dev_priv, start, count, regs);
+ if (ret != 0)
+ return ret;
+ /* scissor regs are emitted in savage_dispatch_draw */
+ if (start < SAVAGE_DRAWCTRL0_S4) {
+ if (start + count > SAVAGE_DRAWCTRL1_S4 + 1)
+ count2 = count -
+ (SAVAGE_DRAWCTRL1_S4 + 1 - start);
+ if (start + count > SAVAGE_DRAWCTRL0_S4)
+ count = SAVAGE_DRAWCTRL0_S4 - start;
+ } else if (start <= SAVAGE_DRAWCTRL1_S4) {
+ if (start + count > SAVAGE_DRAWCTRL1_S4 + 1) {
+ count -= SAVAGE_DRAWCTRL1_S4 + 1 - start;
+ start = SAVAGE_DRAWCTRL1_S4 + 1;
+ } else
+ return 0;
+ }
+ }
+
+ bci_size = count + (count + 254) / 255 + count2 + (count2 + 254) / 255;
+
+ if (cmd_header->state.global) {
+ BEGIN_DMA(bci_size + 1);
+ DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
+ dev_priv->waiting = 1;
+ } else {
+ BEGIN_DMA(bci_size);
+ }
+
+ do {
+ while (count > 0) {
+ unsigned int n = count < 255 ? count : 255;
+ DMA_SET_REGISTERS(start, n);
+ DMA_COPY(regs, n);
+ count -= n;
+ start += n;
+ regs += n;
+ }
+ start += 2;
+ regs += 2;
+ count = count2;
+ count2 = 0;
+ } while (count);
+
+ DMA_COMMIT();
+
+ return 0;
+}
+
+static int savage_dispatch_dma_prim(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const struct drm_buf * dmabuf)
+{
+ unsigned char reorder = 0;
+ unsigned int prim = cmd_header->prim.prim;
+ unsigned int skip = cmd_header->prim.skip;
+ unsigned int n = cmd_header->prim.count;
+ unsigned int start = cmd_header->prim.start;
+ unsigned int i;
+ BCI_LOCALS;
+
+ if (!dmabuf) {
+ DRM_ERROR("called without dma buffers!\n");
+ return -EINVAL;
+ }
+
+ if (!n)
+ return 0;
+
+ switch (prim) {
+ case SAVAGE_PRIM_TRILIST_201:
+ reorder = 1;
+ prim = SAVAGE_PRIM_TRILIST;
+ case SAVAGE_PRIM_TRILIST:
+ if (n % 3 != 0) {
+ DRM_ERROR("wrong number of vertices %u in TRILIST\n",
+ n);
+ return -EINVAL;
+ }
+ break;
+ case SAVAGE_PRIM_TRISTRIP:
+ case SAVAGE_PRIM_TRIFAN:
+ if (n < 3) {
+ DRM_ERROR
+ ("wrong number of vertices %u in TRIFAN/STRIP\n",
+ n);
+ return -EINVAL;
+ }
+ break;
+ default:
+ DRM_ERROR("invalid primitive type %u\n", prim);
+ return -EINVAL;
+ }
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ if (skip != 0) {
+ DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
+ return -EINVAL;
+ }
+ } else {
+ unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
+ (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
+ (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
+ if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
+ DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
+ return -EINVAL;
+ }
+ if (reorder) {
+ DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
+ return -EINVAL;
+ }
+ }
+
+ if (start + n > dmabuf->total / 32) {
+ DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
+ start, start + n - 1, dmabuf->total / 32);
+ return -EINVAL;
+ }
+
+ /* Vertex DMA doesn't work with command DMA at the same time,
+ * so we use BCI_... to submit commands here. Flush buffered
+ * faked DMA first. */
+ DMA_FLUSH();
+
+ if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
+ BEGIN_BCI(2);
+ BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
+ BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
+ dev_priv->state.common.vbaddr = dmabuf->bus_address;
+ }
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
+ /* Workaround for what looks like a hardware bug. If a
+ * WAIT_3D_IDLE was emitted some time before the
+ * indexed drawing command then the engine will lock
+ * up. There are two known workarounds:
+ * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
+ BEGIN_BCI(63);
+ for (i = 0; i < 63; ++i)
+ BCI_WRITE(BCI_CMD_WAIT);
+ dev_priv->waiting = 0;
+ }
+
+ prim <<= 25;
+ while (n != 0) {
+ /* Can emit up to 255 indices (85 triangles) at once. */
+ unsigned int count = n > 255 ? 255 : n;
+ if (reorder) {
+ /* Need to reorder indices for correct flat
+ * shading while preserving the clock sense
+ * for correct culling. Only on Savage3D. */
+ int reorder[3] = { -1, -1, -1 };
+ reorder[start % 3] = 2;
+
+ BEGIN_BCI((count + 1 + 1) / 2);
+ BCI_DRAW_INDICES_S3D(count, prim, start + 2);
+
+ for (i = start + 1; i + 1 < start + count; i += 2)
+ BCI_WRITE((i + reorder[i % 3]) |
+ ((i + 1 +
+ reorder[(i + 1) % 3]) << 16));
+ if (i < start + count)
+ BCI_WRITE(i + reorder[i % 3]);
+ } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ BEGIN_BCI((count + 1 + 1) / 2);
+ BCI_DRAW_INDICES_S3D(count, prim, start);
+
+ for (i = start + 1; i + 1 < start + count; i += 2)
+ BCI_WRITE(i | ((i + 1) << 16));
+ if (i < start + count)
+ BCI_WRITE(i);
+ } else {
+ BEGIN_BCI((count + 2 + 1) / 2);
+ BCI_DRAW_INDICES_S4(count, prim, skip);
+
+ for (i = start; i + 1 < start + count; i += 2)
+ BCI_WRITE(i | ((i + 1) << 16));
+ if (i < start + count)
+ BCI_WRITE(i);
+ }
+
+ start += count;
+ n -= count;
+
+ prim |= BCI_CMD_DRAW_CONT;
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const uint32_t *vtxbuf, unsigned int vb_size,
+ unsigned int vb_stride)
+{
+ unsigned char reorder = 0;
+ unsigned int prim = cmd_header->prim.prim;
+ unsigned int skip = cmd_header->prim.skip;
+ unsigned int n = cmd_header->prim.count;
+ unsigned int start = cmd_header->prim.start;
+ unsigned int vtx_size;
+ unsigned int i;
+ DMA_LOCALS;
+
+ if (!n)
+ return 0;
+
+ switch (prim) {
+ case SAVAGE_PRIM_TRILIST_201:
+ reorder = 1;
+ prim = SAVAGE_PRIM_TRILIST;
+ case SAVAGE_PRIM_TRILIST:
+ if (n % 3 != 0) {
+ DRM_ERROR("wrong number of vertices %u in TRILIST\n",
+ n);
+ return -EINVAL;
+ }
+ break;
+ case SAVAGE_PRIM_TRISTRIP:
+ case SAVAGE_PRIM_TRIFAN:
+ if (n < 3) {
+ DRM_ERROR
+ ("wrong number of vertices %u in TRIFAN/STRIP\n",
+ n);
+ return -EINVAL;
+ }
+ break;
+ default:
+ DRM_ERROR("invalid primitive type %u\n", prim);
+ return -EINVAL;
+ }
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ if (skip > SAVAGE_SKIP_ALL_S3D) {
+ DRM_ERROR("invalid skip flags 0x%04x\n", skip);
+ return -EINVAL;
+ }
+ vtx_size = 8; /* full vertex */
+ } else {
+ if (skip > SAVAGE_SKIP_ALL_S4) {
+ DRM_ERROR("invalid skip flags 0x%04x\n", skip);
+ return -EINVAL;
+ }
+ vtx_size = 10; /* full vertex */
+ }
+
+ vtx_size -= (skip & 1) + (skip >> 1 & 1) +
+ (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
+ (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
+
+ if (vtx_size > vb_stride) {
+ DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
+ vtx_size, vb_stride);
+ return -EINVAL;
+ }
+
+ if (start + n > vb_size / (vb_stride * 4)) {
+ DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
+ start, start + n - 1, vb_size / (vb_stride * 4));
+ return -EINVAL;
+ }
+
+ prim <<= 25;
+ while (n != 0) {
+ /* Can emit up to 255 vertices (85 triangles) at once. */
+ unsigned int count = n > 255 ? 255 : n;
+ if (reorder) {
+ /* Need to reorder vertices for correct flat
+ * shading while preserving the clock sense
+ * for correct culling. Only on Savage3D. */
+ int reorder[3] = { -1, -1, -1 };
+ reorder[start % 3] = 2;
+
+ BEGIN_DMA(count * vtx_size + 1);
+ DMA_DRAW_PRIMITIVE(count, prim, skip);
+
+ for (i = start; i < start + count; ++i) {
+ unsigned int j = i + reorder[i % 3];
+ DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
+ }
+
+ DMA_COMMIT();
+ } else {
+ BEGIN_DMA(count * vtx_size + 1);
+ DMA_DRAW_PRIMITIVE(count, prim, skip);
+
+ if (vb_stride == vtx_size) {
+ DMA_COPY(&vtxbuf[vb_stride * start],
+ vtx_size * count);
+ } else {
+ for (i = start; i < start + count; ++i) {
+ DMA_COPY(&vtxbuf [vb_stride * i],
+ vtx_size);
+ }
+ }
+
+ DMA_COMMIT();
+ }
+
+ start += count;
+ n -= count;
+
+ prim |= BCI_CMD_DRAW_CONT;
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const uint16_t *idx,
+ const struct drm_buf * dmabuf)
+{
+ unsigned char reorder = 0;
+ unsigned int prim = cmd_header->idx.prim;
+ unsigned int skip = cmd_header->idx.skip;
+ unsigned int n = cmd_header->idx.count;
+ unsigned int i;
+ BCI_LOCALS;
+
+ if (!dmabuf) {
+ DRM_ERROR("called without dma buffers!\n");
+ return -EINVAL;
+ }
+
+ if (!n)
+ return 0;
+
+ switch (prim) {
+ case SAVAGE_PRIM_TRILIST_201:
+ reorder = 1;
+ prim = SAVAGE_PRIM_TRILIST;
+ case SAVAGE_PRIM_TRILIST:
+ if (n % 3 != 0) {
+ DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
+ return -EINVAL;
+ }
+ break;
+ case SAVAGE_PRIM_TRISTRIP:
+ case SAVAGE_PRIM_TRIFAN:
+ if (n < 3) {
+ DRM_ERROR
+ ("wrong number of indices %u in TRIFAN/STRIP\n", n);
+ return -EINVAL;
+ }
+ break;
+ default:
+ DRM_ERROR("invalid primitive type %u\n", prim);
+ return -EINVAL;
+ }
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ if (skip != 0) {
+ DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
+ return -EINVAL;
+ }
+ } else {
+ unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
+ (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
+ (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
+ if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
+ DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
+ return -EINVAL;
+ }
+ if (reorder) {
+ DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
+ return -EINVAL;
+ }
+ }
+
+ /* Vertex DMA doesn't work with command DMA at the same time,
+ * so we use BCI_... to submit commands here. Flush buffered
+ * faked DMA first. */
+ DMA_FLUSH();
+
+ if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
+ BEGIN_BCI(2);
+ BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
+ BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
+ dev_priv->state.common.vbaddr = dmabuf->bus_address;
+ }
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
+ /* Workaround for what looks like a hardware bug. If a
+ * WAIT_3D_IDLE was emitted some time before the
+ * indexed drawing command then the engine will lock
+ * up. There are two known workarounds:
+ * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
+ BEGIN_BCI(63);
+ for (i = 0; i < 63; ++i)
+ BCI_WRITE(BCI_CMD_WAIT);
+ dev_priv->waiting = 0;
+ }
+
+ prim <<= 25;
+ while (n != 0) {
+ /* Can emit up to 255 indices (85 triangles) at once. */
+ unsigned int count = n > 255 ? 255 : n;
+
+ /* check indices */
+ for (i = 0; i < count; ++i) {
+ if (idx[i] > dmabuf->total / 32) {
+ DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
+ i, idx[i], dmabuf->total / 32);
+ return -EINVAL;
+ }
+ }
+
+ if (reorder) {
+ /* Need to reorder indices for correct flat
+ * shading while preserving the clock sense
+ * for correct culling. Only on Savage3D. */
+ int reorder[3] = { 2, -1, -1 };
+
+ BEGIN_BCI((count + 1 + 1) / 2);
+ BCI_DRAW_INDICES_S3D(count, prim, idx[2]);
+
+ for (i = 1; i + 1 < count; i += 2)
+ BCI_WRITE(idx[i + reorder[i % 3]] |
+ (idx[i + 1 +
+ reorder[(i + 1) % 3]] << 16));
+ if (i < count)
+ BCI_WRITE(idx[i + reorder[i % 3]]);
+ } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ BEGIN_BCI((count + 1 + 1) / 2);
+ BCI_DRAW_INDICES_S3D(count, prim, idx[0]);
+
+ for (i = 1; i + 1 < count; i += 2)
+ BCI_WRITE(idx[i] | (idx[i + 1] << 16));
+ if (i < count)
+ BCI_WRITE(idx[i]);
+ } else {
+ BEGIN_BCI((count + 2 + 1) / 2);
+ BCI_DRAW_INDICES_S4(count, prim, skip);
+
+ for (i = 0; i + 1 < count; i += 2)
+ BCI_WRITE(idx[i] | (idx[i + 1] << 16));
+ if (i < count)
+ BCI_WRITE(idx[i]);
+ }
+
+ idx += count;
+ n -= count;
+
+ prim |= BCI_CMD_DRAW_CONT;
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const uint16_t *idx,
+ const uint32_t *vtxbuf,
+ unsigned int vb_size, unsigned int vb_stride)
+{
+ unsigned char reorder = 0;
+ unsigned int prim = cmd_header->idx.prim;
+ unsigned int skip = cmd_header->idx.skip;
+ unsigned int n = cmd_header->idx.count;
+ unsigned int vtx_size;
+ unsigned int i;
+ DMA_LOCALS;
+
+ if (!n)
+ return 0;
+
+ switch (prim) {
+ case SAVAGE_PRIM_TRILIST_201:
+ reorder = 1;
+ prim = SAVAGE_PRIM_TRILIST;
+ case SAVAGE_PRIM_TRILIST:
+ if (n % 3 != 0) {
+ DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
+ return -EINVAL;
+ }
+ break;
+ case SAVAGE_PRIM_TRISTRIP:
+ case SAVAGE_PRIM_TRIFAN:
+ if (n < 3) {
+ DRM_ERROR
+ ("wrong number of indices %u in TRIFAN/STRIP\n", n);
+ return -EINVAL;
+ }
+ break;
+ default:
+ DRM_ERROR("invalid primitive type %u\n", prim);
+ return -EINVAL;
+ }
+
+ if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
+ if (skip > SAVAGE_SKIP_ALL_S3D) {
+ DRM_ERROR("invalid skip flags 0x%04x\n", skip);
+ return -EINVAL;
+ }
+ vtx_size = 8; /* full vertex */
+ } else {
+ if (skip > SAVAGE_SKIP_ALL_S4) {
+ DRM_ERROR("invalid skip flags 0x%04x\n", skip);
+ return -EINVAL;
+ }
+ vtx_size = 10; /* full vertex */
+ }
+
+ vtx_size -= (skip & 1) + (skip >> 1 & 1) +
+ (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
+ (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
+
+ if (vtx_size > vb_stride) {
+ DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
+ vtx_size, vb_stride);
+ return -EINVAL;
+ }
+
+ prim <<= 25;
+ while (n != 0) {
+ /* Can emit up to 255 vertices (85 triangles) at once. */
+ unsigned int count = n > 255 ? 255 : n;
+
+ /* Check indices */
+ for (i = 0; i < count; ++i) {
+ if (idx[i] > vb_size / (vb_stride * 4)) {
+ DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
+ i, idx[i], vb_size / (vb_stride * 4));
+ return -EINVAL;
+ }
+ }
+
+ if (reorder) {
+ /* Need to reorder vertices for correct flat
+ * shading while preserving the clock sense
+ * for correct culling. Only on Savage3D. */
+ int reorder[3] = { 2, -1, -1 };
+
+ BEGIN_DMA(count * vtx_size + 1);
+ DMA_DRAW_PRIMITIVE(count, prim, skip);
+
+ for (i = 0; i < count; ++i) {
+ unsigned int j = idx[i + reorder[i % 3]];
+ DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
+ }
+
+ DMA_COMMIT();
+ } else {
+ BEGIN_DMA(count * vtx_size + 1);
+ DMA_DRAW_PRIMITIVE(count, prim, skip);
+
+ for (i = 0; i < count; ++i) {
+ unsigned int j = idx[i];
+ DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
+ }
+
+ DMA_COMMIT();
+ }
+
+ idx += count;
+ n -= count;
+
+ prim |= BCI_CMD_DRAW_CONT;
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t * cmd_header,
+ const drm_savage_cmd_header_t *data,
+ unsigned int nbox,
+ const struct drm_clip_rect *boxes)
+{
+ unsigned int flags = cmd_header->clear0.flags;
+ unsigned int clear_cmd;
+ unsigned int i, nbufs;
+ DMA_LOCALS;
+
+ if (nbox == 0)
+ return 0;
+
+ clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
+ BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW;
+ BCI_CMD_SET_ROP(clear_cmd, 0xCC);
+
+ nbufs = ((flags & SAVAGE_FRONT) ? 1 : 0) +
+ ((flags & SAVAGE_BACK) ? 1 : 0) + ((flags & SAVAGE_DEPTH) ? 1 : 0);
+ if (nbufs == 0)
+ return 0;
+
+ if (data->clear1.mask != 0xffffffff) {
+ /* set mask */
+ BEGIN_DMA(2);
+ DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
+ DMA_WRITE(data->clear1.mask);
+ DMA_COMMIT();
+ }
+ for (i = 0; i < nbox; ++i) {
+ unsigned int x, y, w, h;
+ unsigned int buf;
+ x = boxes[i].x1, y = boxes[i].y1;
+ w = boxes[i].x2 - boxes[i].x1;
+ h = boxes[i].y2 - boxes[i].y1;
+ BEGIN_DMA(nbufs * 6);
+ for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) {
+ if (!(flags & buf))
+ continue;
+ DMA_WRITE(clear_cmd);
+ switch (buf) {
+ case SAVAGE_FRONT:
+ DMA_WRITE(dev_priv->front_offset);
+ DMA_WRITE(dev_priv->front_bd);
+ break;
+ case SAVAGE_BACK:
+ DMA_WRITE(dev_priv->back_offset);
+ DMA_WRITE(dev_priv->back_bd);
+ break;
+ case SAVAGE_DEPTH:
+ DMA_WRITE(dev_priv->depth_offset);
+ DMA_WRITE(dev_priv->depth_bd);
+ break;
+ }
+ DMA_WRITE(data->clear1.value);
+ DMA_WRITE(BCI_X_Y(x, y));
+ DMA_WRITE(BCI_W_H(w, h));
+ }
+ DMA_COMMIT();
+ }
+ if (data->clear1.mask != 0xffffffff) {
+ /* reset mask */
+ BEGIN_DMA(2);
+ DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
+ DMA_WRITE(0xffffffff);
+ DMA_COMMIT();
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
+ unsigned int nbox, const struct drm_clip_rect *boxes)
+{
+ unsigned int swap_cmd;
+ unsigned int i;
+ DMA_LOCALS;
+
+ if (nbox == 0)
+ return 0;
+
+ swap_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
+ BCI_CMD_SRC_PBD_COLOR_NEW | BCI_CMD_DEST_GBD;
+ BCI_CMD_SET_ROP(swap_cmd, 0xCC);
+
+ for (i = 0; i < nbox; ++i) {
+ BEGIN_DMA(6);
+ DMA_WRITE(swap_cmd);
+ DMA_WRITE(dev_priv->back_offset);
+ DMA_WRITE(dev_priv->back_bd);
+ DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
+ DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
+ DMA_WRITE(BCI_W_H(boxes[i].x2 - boxes[i].x1,
+ boxes[i].y2 - boxes[i].y1));
+ DMA_COMMIT();
+ }
+
+ return 0;
+}
+
+static int savage_dispatch_draw(drm_savage_private_t * dev_priv,
+ const drm_savage_cmd_header_t *start,
+ const drm_savage_cmd_header_t *end,
+ const struct drm_buf * dmabuf,
+ const unsigned int *vtxbuf,
+ unsigned int vb_size, unsigned int vb_stride,
+ unsigned int nbox,
+ const struct drm_clip_rect *boxes)
+{
+ unsigned int i, j;
+ int ret;
+
+ for (i = 0; i < nbox; ++i) {
+ const drm_savage_cmd_header_t *cmdbuf;
+ dev_priv->emit_clip_rect(dev_priv, &boxes[i]);
+
+ cmdbuf = start;
+ while (cmdbuf < end) {
+ drm_savage_cmd_header_t cmd_header;
+ cmd_header = *cmdbuf;
+ cmdbuf++;
+ switch (cmd_header.cmd.cmd) {
+ case SAVAGE_CMD_DMA_PRIM:
+ ret = savage_dispatch_dma_prim(
+ dev_priv, &cmd_header, dmabuf);
+ break;
+ case SAVAGE_CMD_VB_PRIM:
+ ret = savage_dispatch_vb_prim(
+ dev_priv, &cmd_header,
+ vtxbuf, vb_size, vb_stride);
+ break;
+ case SAVAGE_CMD_DMA_IDX:
+ j = (cmd_header.idx.count + 3) / 4;
+ /* j was check in savage_bci_cmdbuf */
+ ret = savage_dispatch_dma_idx(dev_priv,
+ &cmd_header, (const uint16_t *)cmdbuf,
+ dmabuf);
+ cmdbuf += j;
+ break;
+ case SAVAGE_CMD_VB_IDX:
+ j = (cmd_header.idx.count + 3) / 4;
+ /* j was check in savage_bci_cmdbuf */
+ ret = savage_dispatch_vb_idx(dev_priv,
+ &cmd_header, (const uint16_t *)cmdbuf,
+ (const uint32_t *)vtxbuf, vb_size,
+ vb_stride);
+ cmdbuf += j;
+ break;
+ default:
+ /* What's the best return code? EFAULT? */
+ DRM_ERROR("IMPLEMENTATION ERROR: "
+ "non-drawing-command %d\n",
+ cmd_header.cmd.cmd);
+ return -EINVAL;
+ }
+
+ if (ret != 0)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ drm_savage_private_t *dev_priv = dev->dev_private;
+ struct drm_device_dma *dma = dev->dma;
+ struct drm_buf *dmabuf;
+ drm_savage_cmdbuf_t *cmdbuf = data;
+ drm_savage_cmd_header_t *kcmd_addr = NULL;
+ drm_savage_cmd_header_t *first_draw_cmd;
+ unsigned int *kvb_addr = NULL;
+ struct drm_clip_rect *kbox_addr = NULL;
+ unsigned int i, j;
+ int ret = 0;
+
+ DRM_DEBUG("\n");
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ if (dma && dma->buflist) {
+ if (cmdbuf->dma_idx > dma->buf_count) {
+ DRM_ERROR
+ ("vertex buffer index %u out of range (0-%u)\n",
+ cmdbuf->dma_idx, dma->buf_count - 1);
+ return -EINVAL;
+ }
+ dmabuf = dma->buflist[cmdbuf->dma_idx];
+ } else {
+ dmabuf = NULL;
+ }
+
+ /* Copy the user buffers into kernel temporary areas. This hasn't been
+ * a performance loss compared to VERIFYAREA_READ/
+ * COPY_FROM_USER_UNCHECKED when done in other drivers, and is correct
+ * for locking on FreeBSD.
+ */
+ if (cmdbuf->size) {
+ kcmd_addr = kmalloc_array(cmdbuf->size, 8, GFP_KERNEL);
+ if (kcmd_addr == NULL)
+ return -ENOMEM;
+
+ if (copy_from_user(kcmd_addr, cmdbuf->cmd_addr,
+ cmdbuf->size * 8))
+ {
+ kfree(kcmd_addr);
+ return -EFAULT;
+ }
+ cmdbuf->cmd_addr = kcmd_addr;
+ }
+ if (cmdbuf->vb_size) {
+ kvb_addr = kmalloc(cmdbuf->vb_size, GFP_KERNEL);
+ if (kvb_addr == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ if (copy_from_user(kvb_addr, cmdbuf->vb_addr,
+ cmdbuf->vb_size)) {
+ ret = -EFAULT;
+ goto done;
+ }
+ cmdbuf->vb_addr = kvb_addr;
+ }
+ if (cmdbuf->nbox) {
+ kbox_addr = kmalloc_array(cmdbuf->nbox, sizeof(struct drm_clip_rect),
+ GFP_KERNEL);
+ if (kbox_addr == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ if (copy_from_user(kbox_addr, cmdbuf->box_addr,
+ cmdbuf->nbox * sizeof(struct drm_clip_rect))) {
+ ret = -EFAULT;
+ goto done;
+ }
+ cmdbuf->box_addr = kbox_addr;
+ }
+
+ /* Make sure writes to DMA buffers are finished before sending
+ * DMA commands to the graphics hardware. */
+ mb();
+
+ /* Coming from user space. Don't know if the Xserver has
+ * emitted wait commands. Assuming the worst. */
+ dev_priv->waiting = 1;
+
+ i = 0;
+ first_draw_cmd = NULL;
+ while (i < cmdbuf->size) {
+ drm_savage_cmd_header_t cmd_header;
+ cmd_header = *(drm_savage_cmd_header_t *)cmdbuf->cmd_addr;
+ cmdbuf->cmd_addr++;
+ i++;
+
+ /* Group drawing commands with same state to minimize
+ * iterations over clip rects. */
+ j = 0;
+ switch (cmd_header.cmd.cmd) {
+ case SAVAGE_CMD_DMA_IDX:
+ case SAVAGE_CMD_VB_IDX:
+ j = (cmd_header.idx.count + 3) / 4;
+ if (i + j > cmdbuf->size) {
+ DRM_ERROR("indexed drawing command extends "
+ "beyond end of command buffer\n");
+ DMA_FLUSH();
+ ret = -EINVAL;
+ goto done;
+ }
+ /* fall through */
+ case SAVAGE_CMD_DMA_PRIM:
+ case SAVAGE_CMD_VB_PRIM:
+ if (!first_draw_cmd)
+ first_draw_cmd = cmdbuf->cmd_addr - 1;
+ cmdbuf->cmd_addr += j;
+ i += j;
+ break;
+ default:
+ if (first_draw_cmd) {
+ ret = savage_dispatch_draw(
+ dev_priv, first_draw_cmd,
+ cmdbuf->cmd_addr - 1,
+ dmabuf, cmdbuf->vb_addr, cmdbuf->vb_size,
+ cmdbuf->vb_stride,
+ cmdbuf->nbox, cmdbuf->box_addr);
+ if (ret != 0)
+ goto done;
+ first_draw_cmd = NULL;
+ }
+ }
+ if (first_draw_cmd)
+ continue;
+
+ switch (cmd_header.cmd.cmd) {
+ case SAVAGE_CMD_STATE:
+ j = (cmd_header.state.count + 1) / 2;
+ if (i + j > cmdbuf->size) {
+ DRM_ERROR("command SAVAGE_CMD_STATE extends "
+ "beyond end of command buffer\n");
+ DMA_FLUSH();
+ ret = -EINVAL;
+ goto done;
+ }
+ ret = savage_dispatch_state(dev_priv, &cmd_header,
+ (const uint32_t *)cmdbuf->cmd_addr);
+ cmdbuf->cmd_addr += j;
+ i += j;
+ break;
+ case SAVAGE_CMD_CLEAR:
+ if (i + 1 > cmdbuf->size) {
+ DRM_ERROR("command SAVAGE_CMD_CLEAR extends "
+ "beyond end of command buffer\n");
+ DMA_FLUSH();
+ ret = -EINVAL;
+ goto done;
+ }
+ ret = savage_dispatch_clear(dev_priv, &cmd_header,
+ cmdbuf->cmd_addr,
+ cmdbuf->nbox,
+ cmdbuf->box_addr);
+ cmdbuf->cmd_addr++;
+ i++;
+ break;
+ case SAVAGE_CMD_SWAP:
+ ret = savage_dispatch_swap(dev_priv, cmdbuf->nbox,
+ cmdbuf->box_addr);
+ break;
+ default:
+ DRM_ERROR("invalid command 0x%x\n",
+ cmd_header.cmd.cmd);
+ DMA_FLUSH();
+ ret = -EINVAL;
+ goto done;
+ }
+
+ if (ret != 0) {
+ DMA_FLUSH();
+ goto done;
+ }
+ }
+
+ if (first_draw_cmd) {
+ ret = savage_dispatch_draw (
+ dev_priv, first_draw_cmd, cmdbuf->cmd_addr, dmabuf,
+ cmdbuf->vb_addr, cmdbuf->vb_size, cmdbuf->vb_stride,
+ cmdbuf->nbox, cmdbuf->box_addr);
+ if (ret != 0) {
+ DMA_FLUSH();
+ goto done;
+ }
+ }
+
+ DMA_FLUSH();
+
+ if (dmabuf && cmdbuf->discard) {
+ drm_savage_buf_priv_t *buf_priv = dmabuf->dev_private;
+ uint16_t event;
+ event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
+ SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
+ savage_freelist_put(dev, dmabuf);
+ }
+
+done:
+ /* If we didn't need to allocate them, these'll be NULL */
+ kfree(kcmd_addr);
+ kfree(kvb_addr);
+ kfree(kbox_addr);
+
+ return ret;
+}