Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 228 insertions, 0 deletions

diff --git a/nx-X11/extras/drm/linux-core/ati_pcigart.c b/nx-X11/extras/drm/linux-core/ati_pcigart.c
new file mode 100644
index 000000000..404c5b73a
--- /dev/null
+++ b/nx-X11/extras/drm/linux-core/ati_pcigart.c
@@ -0,0 +1,228 @@
+/**
+ * \file ati_pcigart.c
+ * ATI PCI GART support
+ *
+ * \author Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * Created: Wed Dec 13 21:52:19 2000 by gareth@valinux.com
+ *
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "drmP.h"
+
+#if PAGE_SIZE == 65536
+# define ATI_PCIGART_TABLE_ORDER	0
+# define ATI_PCIGART_TABLE_PAGES	(1 << 0)
+#elif PAGE_SIZE == 16384
+# define ATI_PCIGART_TABLE_ORDER	1
+# define ATI_PCIGART_TABLE_PAGES	(1 << 1)
+#elif PAGE_SIZE == 8192
+# define ATI_PCIGART_TABLE_ORDER 	2
+# define ATI_PCIGART_TABLE_PAGES 	(1 << 2)
+#elif PAGE_SIZE == 4096
+# define ATI_PCIGART_TABLE_ORDER 	3
+# define ATI_PCIGART_TABLE_PAGES 	(1 << 3)
+#else
+# error - PAGE_SIZE not 64K, 16K, 8K or 4K
+#endif
+
+# define ATI_MAX_PCIGART_PAGES		8192	/**< 32 MB aperture, 4K pages */
+# define ATI_PCIGART_PAGE_SIZE		4096	/**< PCI GART page size */
+
+static void *drm_ati_alloc_pcigart_table(void)
+{
+	unsigned long address;
+	struct page *page;
+	int i;
+	DRM_DEBUG("%s\n", __FUNCTION__);
+
+	address = __get_free_pages(GFP_KERNEL, ATI_PCIGART_TABLE_ORDER);
+	if (address == 0UL) {
+		return 0;
+	}
+
+	page = virt_to_page(address);
+
+	for (i = 0; i < ATI_PCIGART_TABLE_PAGES; i++, page++) {
+		get_page(page);
+		SetPageReserved(page);
+	}
+
+	DRM_DEBUG("%s: returning 0x%08lx\n", __FUNCTION__, address);
+	return (void *)address;
+}
+
+static void drm_ati_free_pcigart_table(void *address)
+{
+	struct page *page;
+	int i;
+	DRM_DEBUG("%s\n", __FUNCTION__);
+
+	page = virt_to_page((unsigned long)address);
+
+	for (i = 0; i < ATI_PCIGART_TABLE_PAGES; i++, page++) {
+		__put_page(page);
+		ClearPageReserved(page);
+	}
+
+	free_pages((unsigned long)address, ATI_PCIGART_TABLE_ORDER);
+}
+
+int drm_ati_pcigart_init(drm_device_t * dev, drm_ati_pcigart_info *gart_info)
+{
+	drm_sg_mem_t *entry = dev->sg;
+	void *address = NULL;
+	unsigned long pages;
+	u32 *pci_gart, page_base, bus_address = 0;
+	int i, j, ret = 0;
+
+	if (!entry) {
+		DRM_ERROR("no scatter/gather memory!\n");
+		goto done;
+	}
+
+	if (gart_info->gart_table_location==DRM_ATI_GART_MAIN)
+	{
+		DRM_DEBUG("PCI: no table in VRAM: using normal RAM\n");
+		
+		address = drm_ati_alloc_pcigart_table();
+		if (!address) {
+			DRM_ERROR("cannot allocate PCI GART page!\n");
+			goto done;
+		}
+		
+		if (!dev->pdev) {
+			DRM_ERROR("PCI device unknown!\n");
+			goto done;
+		}
+		
+		bus_address = pci_map_single(dev->pdev, address,
+					     ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
+					     PCI_DMA_TODEVICE);
+		if (bus_address == 0) {
+			DRM_ERROR("unable to map PCIGART pages!\n");
+			drm_ati_free_pcigart_table(address);
+			address = 0;
+			goto done;
+		}
+	}
+	else
+	{
+		address = gart_info->addr;
+		bus_address = gart_info->bus_addr;
+		DRM_DEBUG("PCI: Gart Table: VRAM %08X mapped at %08lX\n", bus_address, (unsigned long)address);
+	}
+
+	pci_gart = (u32 *) address;
+
+	pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
+	    ? entry->pages : ATI_MAX_PCIGART_PAGES;
+
+	memset(pci_gart, 0, ATI_MAX_PCIGART_PAGES * sizeof(u32));
+
+	for (i = 0; i < pages; i++) {
+		/* we need to support large memory configurations */
+		entry->busaddr[i] = pci_map_single(dev->pdev,
+						   page_address(entry->
+								pagelist[i]),
+						   PAGE_SIZE, PCI_DMA_TODEVICE);
+		if (entry->busaddr[i] == 0) {
+			DRM_ERROR("unable to map PCIGART pages!\n");
+			drm_ati_pcigart_cleanup(dev, gart_info);
+			address = NULL;
+			bus_address = 0;
+			goto done;
+		}
+		page_base = (u32) entry->busaddr[i];
+
+		for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
+			if (gart_info->is_pcie)
+				*pci_gart = (cpu_to_le32(page_base)>>8) | 0xc;
+			else
+				*pci_gart = cpu_to_le32(page_base);
+			pci_gart++;
+			page_base += ATI_PCIGART_PAGE_SIZE;
+		}
+	}
+
+	ret = 1;
+
+#if defined(__i386__) || defined(__x86_64__)
+	wbinvd();
+#else
+	mb();
+#endif
+
+      done:
+	gart_info->addr = address;
+	gart_info->bus_addr = bus_address;
+	return ret;
+}
+EXPORT_SYMBOL(drm_ati_pcigart_init);
+
+int drm_ati_pcigart_cleanup(drm_device_t * dev, drm_ati_pcigart_info *gart_info)
+{
+	drm_sg_mem_t *entry = dev->sg;
+	unsigned long pages;
+	int i;
+
+	/* we need to support large memory configurations */
+	if (!entry) {
+		DRM_ERROR("no scatter/gather memory!\n");
+		return 0;
+	}
+
+	if (gart_info->bus_addr) {
+		if (gart_info->gart_table_location==DRM_ATI_GART_MAIN) {
+			pci_unmap_single(dev->pdev, gart_info->bus_addr,
+					 ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
+					 PCI_DMA_TODEVICE);
+		}
+
+		pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
+		    ? entry->pages : ATI_MAX_PCIGART_PAGES;
+
+		for (i = 0; i < pages; i++) {
+			if (!entry->busaddr[i])
+				break;
+			pci_unmap_single(dev->pdev, entry->busaddr[i],
+					 PAGE_SIZE, PCI_DMA_TODEVICE);
+		}
+
+		if (gart_info->gart_table_location==DRM_ATI_GART_MAIN)
+			gart_info->bus_addr=0;
+	}
+
+
+	if (gart_info->gart_table_location==DRM_ATI_GART_MAIN && gart_info->addr) {
+		drm_ati_free_pcigart_table(gart_info->addr);
+		gart_info->addr=0;
+	}
+
+	return 1;
+}
+EXPORT_SYMBOL(drm_ati_pcigart_cleanup);
+