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path: root/drivers/char/agp/i460-agp.c
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Diffstat (limited to 'drivers/char/agp/i460-agp.c')
-rw-r--r--drivers/char/agp/i460-agp.c642
1 files changed, 642 insertions, 0 deletions
diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c
new file mode 100644
index 00000000000..adbea896c0d
--- /dev/null
+++ b/drivers/char/agp/i460-agp.c
@@ -0,0 +1,642 @@
+/*
+ * For documentation on the i460 AGP interface, see Chapter 7 (AGP Subsystem) of
+ * the "Intel 460GTX Chipset Software Developer's Manual":
+ * http://developer.intel.com/design/itanium/downloads/24870401s.htm
+ */
+/*
+ * 460GX support by Chris Ahna <christopher.j.ahna@intel.com>
+ * Clean up & simplification by David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/agp_backend.h>
+
+#include "agp.h"
+
+#define INTEL_I460_BAPBASE 0x98
+#define INTEL_I460_GXBCTL 0xa0
+#define INTEL_I460_AGPSIZ 0xa2
+#define INTEL_I460_ATTBASE 0xfe200000
+#define INTEL_I460_GATT_VALID (1UL << 24)
+#define INTEL_I460_GATT_COHERENT (1UL << 25)
+
+/*
+ * The i460 can operate with large (4MB) pages, but there is no sane way to support this
+ * within the current kernel/DRM environment, so we disable the relevant code for now.
+ * See also comments in ia64_alloc_page()...
+ */
+#define I460_LARGE_IO_PAGES 0
+
+#if I460_LARGE_IO_PAGES
+# define I460_IO_PAGE_SHIFT i460.io_page_shift
+#else
+# define I460_IO_PAGE_SHIFT 12
+#endif
+
+#define I460_IOPAGES_PER_KPAGE (PAGE_SIZE >> I460_IO_PAGE_SHIFT)
+#define I460_KPAGES_PER_IOPAGE (1 << (I460_IO_PAGE_SHIFT - PAGE_SHIFT))
+#define I460_SRAM_IO_DISABLE (1 << 4)
+#define I460_BAPBASE_ENABLE (1 << 3)
+#define I460_AGPSIZ_MASK 0x7
+#define I460_4M_PS (1 << 1)
+
+/* Control bits for Out-Of-GART coherency and Burst Write Combining */
+#define I460_GXBCTL_OOG (1UL << 0)
+#define I460_GXBCTL_BWC (1UL << 2)
+
+/*
+ * gatt_table entries are 32-bits wide on the i460; the generic code ought to declare the
+ * gatt_table and gatt_table_real pointers a "void *"...
+ */
+#define RD_GATT(index) readl((u32 *) i460.gatt + (index))
+#define WR_GATT(index, val) writel((val), (u32 *) i460.gatt + (index))
+/*
+ * The 460 spec says we have to read the last location written to make sure that all
+ * writes have taken effect
+ */
+#define WR_FLUSH_GATT(index) RD_GATT(index)
+
+#define log2(x) ffz(~(x))
+
+static struct {
+ void *gatt; /* ioremap'd GATT area */
+
+ /* i460 supports multiple GART page sizes, so GART pageshift is dynamic: */
+ u8 io_page_shift;
+
+ /* BIOS configures chipset to one of 2 possible apbase values: */
+ u8 dynamic_apbase;
+
+ /* structure for tracking partial use of 4MB GART pages: */
+ struct lp_desc {
+ unsigned long *alloced_map; /* bitmap of kernel-pages in use */
+ int refcount; /* number of kernel pages using the large page */
+ u64 paddr; /* physical address of large page */
+ } *lp_desc;
+} i460;
+
+static struct aper_size_info_8 i460_sizes[3] =
+{
+ /*
+ * The 32GB aperture is only available with a 4M GART page size. Due to the
+ * dynamic GART page size, we can't figure out page_order or num_entries until
+ * runtime.
+ */
+ {32768, 0, 0, 4},
+ {1024, 0, 0, 2},
+ {256, 0, 0, 1}
+};
+
+static struct gatt_mask i460_masks[] =
+{
+ {
+ .mask = INTEL_I460_GATT_VALID | INTEL_I460_GATT_COHERENT,
+ .type = 0
+ }
+};
+
+static int i460_fetch_size (void)
+{
+ int i;
+ u8 temp;
+ struct aper_size_info_8 *values;
+
+ /* Determine the GART page size */
+ pci_read_config_byte(agp_bridge->dev, INTEL_I460_GXBCTL, &temp);
+ i460.io_page_shift = (temp & I460_4M_PS) ? 22 : 12;
+ pr_debug("i460_fetch_size: io_page_shift=%d\n", i460.io_page_shift);
+
+ if (i460.io_page_shift != I460_IO_PAGE_SHIFT) {
+ printk(KERN_ERR PFX
+ "I/O (GART) page-size %ZuKB doesn't match expected size %ZuKB\n",
+ 1UL << (i460.io_page_shift - 10), 1UL << (I460_IO_PAGE_SHIFT));
+ return 0;
+ }
+
+ values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
+
+ pci_read_config_byte(agp_bridge->dev, INTEL_I460_AGPSIZ, &temp);
+
+ /* Exit now if the IO drivers for the GART SRAMS are turned off */
+ if (temp & I460_SRAM_IO_DISABLE) {
+ printk(KERN_ERR PFX "GART SRAMS disabled on 460GX chipset\n");
+ printk(KERN_ERR PFX "AGPGART operation not possible\n");
+ return 0;
+ }
+
+ /* Make sure we don't try to create an 2 ^ 23 entry GATT */
+ if ((i460.io_page_shift == 0) && ((temp & I460_AGPSIZ_MASK) == 4)) {
+ printk(KERN_ERR PFX "We can't have a 32GB aperture with 4KB GART pages\n");
+ return 0;
+ }
+
+ /* Determine the proper APBASE register */
+ if (temp & I460_BAPBASE_ENABLE)
+ i460.dynamic_apbase = INTEL_I460_BAPBASE;
+ else
+ i460.dynamic_apbase = AGP_APBASE;
+
+ for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
+ /*
+ * Dynamically calculate the proper num_entries and page_order values for
+ * the define aperture sizes. Take care not to shift off the end of
+ * values[i].size.
+ */
+ values[i].num_entries = (values[i].size << 8) >> (I460_IO_PAGE_SHIFT - 12);
+ values[i].page_order = log2((sizeof(u32)*values[i].num_entries) >> PAGE_SHIFT);
+ }
+
+ for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
+ /* Neglect control bits when matching up size_value */
+ if ((temp & I460_AGPSIZ_MASK) == values[i].size_value) {
+ agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
+ agp_bridge->aperture_size_idx = i;
+ return values[i].size;
+ }
+ }
+
+ return 0;
+}
+
+/* There isn't anything to do here since 460 has no GART TLB. */
+static void i460_tlb_flush (struct agp_memory *mem)
+{
+ return;
+}
+
+/*
+ * This utility function is needed to prevent corruption of the control bits
+ * which are stored along with the aperture size in 460's AGPSIZ register
+ */
+static void i460_write_agpsiz (u8 size_value)
+{
+ u8 temp;
+
+ pci_read_config_byte(agp_bridge->dev, INTEL_I460_AGPSIZ, &temp);
+ pci_write_config_byte(agp_bridge->dev, INTEL_I460_AGPSIZ,
+ ((temp & ~I460_AGPSIZ_MASK) | size_value));
+}
+
+static void i460_cleanup (void)
+{
+ struct aper_size_info_8 *previous_size;
+
+ previous_size = A_SIZE_8(agp_bridge->previous_size);
+ i460_write_agpsiz(previous_size->size_value);
+
+ if (I460_IO_PAGE_SHIFT > PAGE_SHIFT)
+ kfree(i460.lp_desc);
+}
+
+static int i460_configure (void)
+{
+ union {
+ u32 small[2];
+ u64 large;
+ } temp;
+ size_t size;
+ u8 scratch;
+ struct aper_size_info_8 *current_size;
+
+ temp.large = 0;
+
+ current_size = A_SIZE_8(agp_bridge->current_size);
+ i460_write_agpsiz(current_size->size_value);
+
+ /*
+ * Do the necessary rigmarole to read all eight bytes of APBASE.
+ * This has to be done since the AGP aperture can be above 4GB on
+ * 460 based systems.
+ */
+ pci_read_config_dword(agp_bridge->dev, i460.dynamic_apbase, &(temp.small[0]));
+ pci_read_config_dword(agp_bridge->dev, i460.dynamic_apbase + 4, &(temp.small[1]));
+
+ /* Clear BAR control bits */
+ agp_bridge->gart_bus_addr = temp.large & ~((1UL << 3) - 1);
+
+ pci_read_config_byte(agp_bridge->dev, INTEL_I460_GXBCTL, &scratch);
+ pci_write_config_byte(agp_bridge->dev, INTEL_I460_GXBCTL,
+ (scratch & 0x02) | I460_GXBCTL_OOG | I460_GXBCTL_BWC);
+
+ /*
+ * Initialize partial allocation trackers if a GART page is bigger than a kernel
+ * page.
+ */
+ if (I460_IO_PAGE_SHIFT > PAGE_SHIFT) {
+ size = current_size->num_entries * sizeof(i460.lp_desc[0]);
+ i460.lp_desc = kmalloc(size, GFP_KERNEL);
+ if (!i460.lp_desc)
+ return -ENOMEM;
+ memset(i460.lp_desc, 0, size);
+ }
+ return 0;
+}
+
+static int i460_create_gatt_table (struct agp_bridge_data *bridge)
+{
+ int page_order, num_entries, i;
+ void *temp;
+
+ /*
+ * Load up the fixed address of the GART SRAMS which hold our GATT table.
+ */
+ temp = agp_bridge->current_size;
+ page_order = A_SIZE_8(temp)->page_order;
+ num_entries = A_SIZE_8(temp)->num_entries;
+
+ i460.gatt = ioremap(INTEL_I460_ATTBASE, PAGE_SIZE << page_order);
+
+ /* These are no good, the should be removed from the agp_bridge strucure... */
+ agp_bridge->gatt_table_real = NULL;
+ agp_bridge->gatt_table = NULL;
+ agp_bridge->gatt_bus_addr = 0;
+
+ for (i = 0; i < num_entries; ++i)
+ WR_GATT(i, 0);
+ WR_FLUSH_GATT(i - 1);
+ return 0;
+}
+
+static int i460_free_gatt_table (struct agp_bridge_data *bridge)
+{
+ int num_entries, i;
+ void *temp;
+
+ temp = agp_bridge->current_size;
+
+ num_entries = A_SIZE_8(temp)->num_entries;
+
+ for (i = 0; i < num_entries; ++i)
+ WR_GATT(i, 0);
+ WR_FLUSH_GATT(num_entries - 1);
+
+ iounmap(i460.gatt);
+ return 0;
+}
+
+/*
+ * The following functions are called when the I/O (GART) page size is smaller than
+ * PAGE_SIZE.
+ */
+
+static int i460_insert_memory_small_io_page (struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ unsigned long paddr, io_pg_start, io_page_size;
+ int i, j, k, num_entries;
+ void *temp;
+
+ pr_debug("i460_insert_memory_small_io_page(mem=%p, pg_start=%ld, type=%d, paddr0=0x%lx)\n",
+ mem, pg_start, type, mem->memory[0]);
+
+ io_pg_start = I460_IOPAGES_PER_KPAGE * pg_start;
+
+ temp = agp_bridge->current_size;
+ num_entries = A_SIZE_8(temp)->num_entries;
+
+ if ((io_pg_start + I460_IOPAGES_PER_KPAGE * mem->page_count) > num_entries) {
+ printk(KERN_ERR PFX "Looks like we're out of AGP memory\n");
+ return -EINVAL;
+ }
+
+ j = io_pg_start;
+ while (j < (io_pg_start + I460_IOPAGES_PER_KPAGE * mem->page_count)) {
+ if (!PGE_EMPTY(agp_bridge, RD_GATT(j))) {
+ pr_debug("i460_insert_memory_small_io_page: GATT[%d]=0x%x is busy\n",
+ j, RD_GATT(j));
+ return -EBUSY;
+ }
+ j++;
+ }
+
+ io_page_size = 1UL << I460_IO_PAGE_SHIFT;
+ for (i = 0, j = io_pg_start; i < mem->page_count; i++) {
+ paddr = mem->memory[i];
+ for (k = 0; k < I460_IOPAGES_PER_KPAGE; k++, j++, paddr += io_page_size)
+ WR_GATT(j, agp_bridge->driver->mask_memory(agp_bridge,
+ paddr, mem->type));
+ }
+ WR_FLUSH_GATT(j - 1);
+ return 0;
+}
+
+static int i460_remove_memory_small_io_page(struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ int i;
+
+ pr_debug("i460_remove_memory_small_io_page(mem=%p, pg_start=%ld, type=%d)\n",
+ mem, pg_start, type);
+
+ pg_start = I460_IOPAGES_PER_KPAGE * pg_start;
+
+ for (i = pg_start; i < (pg_start + I460_IOPAGES_PER_KPAGE * mem->page_count); i++)
+ WR_GATT(i, 0);
+ WR_FLUSH_GATT(i - 1);
+ return 0;
+}
+
+#if I460_LARGE_IO_PAGES
+
+/*
+ * These functions are called when the I/O (GART) page size exceeds PAGE_SIZE.
+ *
+ * This situation is interesting since AGP memory allocations that are smaller than a
+ * single GART page are possible. The i460.lp_desc array tracks partial allocation of the
+ * large GART pages to work around this issue.
+ *
+ * i460.lp_desc[pg_num].refcount tracks the number of kernel pages in use within GART page
+ * pg_num. i460.lp_desc[pg_num].paddr is the physical address of the large page and
+ * i460.lp_desc[pg_num].alloced_map is a bitmap of kernel pages that are in use (allocated).
+ */
+
+static int i460_alloc_large_page (struct lp_desc *lp)
+{
+ unsigned long order = I460_IO_PAGE_SHIFT - PAGE_SHIFT;
+ size_t map_size;
+ void *lpage;
+
+ lpage = (void *) __get_free_pages(GFP_KERNEL, order);
+ if (!lpage) {
+ printk(KERN_ERR PFX "Couldn't alloc 4M GART page...\n");
+ return -ENOMEM;
+ }
+
+ map_size = ((I460_KPAGES_PER_IOPAGE + BITS_PER_LONG - 1) & -BITS_PER_LONG)/8;
+ lp->alloced_map = kmalloc(map_size, GFP_KERNEL);
+ if (!lp->alloced_map) {
+ free_pages((unsigned long) lpage, order);
+ printk(KERN_ERR PFX "Out of memory, we're in trouble...\n");
+ return -ENOMEM;
+ }
+ memset(lp->alloced_map, 0, map_size);
+
+ lp->paddr = virt_to_phys(lpage);
+ lp->refcount = 0;
+ atomic_add(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
+ return 0;
+}
+
+static void i460_free_large_page (struct lp_desc *lp)
+{
+ kfree(lp->alloced_map);
+ lp->alloced_map = NULL;
+
+ free_pages((unsigned long) phys_to_virt(lp->paddr), I460_IO_PAGE_SHIFT - PAGE_SHIFT);
+ atomic_sub(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
+}
+
+static int i460_insert_memory_large_io_page (struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ int i, start_offset, end_offset, idx, pg, num_entries;
+ struct lp_desc *start, *end, *lp;
+ void *temp;
+
+ temp = agp_bridge->current_size;
+ num_entries = A_SIZE_8(temp)->num_entries;
+
+ /* Figure out what pg_start means in terms of our large GART pages */
+ start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE];
+ end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE];
+ start_offset = pg_start % I460_KPAGES_PER_IOPAGE;
+ end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE;
+
+ if (end > i460.lp_desc + num_entries) {
+ printk(KERN_ERR PFX "Looks like we're out of AGP memory\n");
+ return -EINVAL;
+ }
+
+ /* Check if the requested region of the aperture is free */
+ for (lp = start; lp <= end; ++lp) {
+ if (!lp->alloced_map)
+ continue; /* OK, the entire large page is available... */
+
+ for (idx = ((lp == start) ? start_offset : 0);
+ idx < ((lp == end) ? (end_offset + 1) : I460_KPAGES_PER_IOPAGE);
+ idx++)
+ {
+ if (test_bit(idx, lp->alloced_map))
+ return -EBUSY;
+ }
+ }
+
+ for (lp = start, i = 0; lp <= end; ++lp) {
+ if (!lp->alloced_map) {
+ /* Allocate new GART pages... */
+ if (i460_alloc_large_page(lp) < 0)
+ return -ENOMEM;
+ pg = lp - i460.lp_desc;
+ WR_GATT(pg, agp_bridge->driver->mask_memory(agp_bridge,
+ lp->paddr, 0));
+ WR_FLUSH_GATT(pg);
+ }
+
+ for (idx = ((lp == start) ? start_offset : 0);
+ idx < ((lp == end) ? (end_offset + 1) : I460_KPAGES_PER_IOPAGE);
+ idx++, i++)
+ {
+ mem->memory[i] = lp->paddr + idx*PAGE_SIZE;
+ __set_bit(idx, lp->alloced_map);
+ ++lp->refcount;
+ }
+ }
+ return 0;
+}
+
+static int i460_remove_memory_large_io_page (struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ int i, pg, start_offset, end_offset, idx, num_entries;
+ struct lp_desc *start, *end, *lp;
+ void *temp;
+
+ temp = agp_bridge->driver->current_size;
+ num_entries = A_SIZE_8(temp)->num_entries;
+
+ /* Figure out what pg_start means in terms of our large GART pages */
+ start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE];
+ end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE];
+ start_offset = pg_start % I460_KPAGES_PER_IOPAGE;
+ end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE;
+
+ for (i = 0, lp = start; lp <= end; ++lp) {
+ for (idx = ((lp == start) ? start_offset : 0);
+ idx < ((lp == end) ? (end_offset + 1) : I460_KPAGES_PER_IOPAGE);
+ idx++, i++)
+ {
+ mem->memory[i] = 0;
+ __clear_bit(idx, lp->alloced_map);
+ --lp->refcount;
+ }
+
+ /* Free GART pages if they are unused */
+ if (lp->refcount == 0) {
+ pg = lp - i460.lp_desc;
+ WR_GATT(pg, 0);
+ WR_FLUSH_GATT(pg);
+ i460_free_large_page(lp);
+ }
+ }
+ return 0;
+}
+
+/* Wrapper routines to call the approriate {small_io_page,large_io_page} function */
+
+static int i460_insert_memory (struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT)
+ return i460_insert_memory_small_io_page(mem, pg_start, type);
+ else
+ return i460_insert_memory_large_io_page(mem, pg_start, type);
+}
+
+static int i460_remove_memory (struct agp_memory *mem,
+ off_t pg_start, int type)
+{
+ if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT)
+ return i460_remove_memory_small_io_page(mem, pg_start, type);
+ else
+ return i460_remove_memory_large_io_page(mem, pg_start, type);
+}
+
+/*
+ * If the I/O (GART) page size is bigger than the kernel page size, we don't want to
+ * allocate memory until we know where it is to be bound in the aperture (a
+ * multi-kernel-page alloc might fit inside of an already allocated GART page).
+ *
+ * Let's just hope nobody counts on the allocated AGP memory being there before bind time
+ * (I don't think current drivers do)...
+ */
+static void *i460_alloc_page (struct agp_bridge_data *bridge)
+{
+ void *page;
+
+ if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT)
+ page = agp_generic_alloc_page(agp_bridge);
+ else
+ /* Returning NULL would cause problems */
+ /* AK: really dubious code. */
+ page = (void *)~0UL;
+ return page;
+}
+
+static void i460_destroy_page (void *page)
+{
+ if (I460_IO_PAGE_SHIFT <= PAGE_SHIFT)
+ agp_generic_destroy_page(page);
+}
+
+#endif /* I460_LARGE_IO_PAGES */
+
+static unsigned long i460_mask_memory (struct agp_bridge_data *bridge,
+ unsigned long addr, int type)
+{
+ /* Make sure the returned address is a valid GATT entry */
+ return bridge->driver->masks[0].mask
+ | (((addr & ~((1 << I460_IO_PAGE_SHIFT) - 1)) & 0xffffff000) >> 12);
+}
+
+struct agp_bridge_driver intel_i460_driver = {
+ .owner = THIS_MODULE,
+ .aperture_sizes = i460_sizes,
+ .size_type = U8_APER_SIZE,
+ .num_aperture_sizes = 3,
+ .configure = i460_configure,
+ .fetch_size = i460_fetch_size,
+ .cleanup = i460_cleanup,
+ .tlb_flush = i460_tlb_flush,
+ .mask_memory = i460_mask_memory,
+ .masks = i460_masks,
+ .agp_enable = agp_generic_enable,
+ .cache_flush = global_cache_flush,
+ .create_gatt_table = i460_create_gatt_table,
+ .free_gatt_table = i460_free_gatt_table,
+#if I460_LARGE_IO_PAGES
+ .insert_memory = i460_insert_memory,
+ .remove_memory = i460_remove_memory,
+ .agp_alloc_page = i460_alloc_page,
+ .agp_destroy_page = i460_destroy_page,
+#else
+ .insert_memory = i460_insert_memory_small_io_page,
+ .remove_memory = i460_remove_memory_small_io_page,
+ .agp_alloc_page = agp_generic_alloc_page,
+ .agp_destroy_page = agp_generic_destroy_page,
+#endif
+ .alloc_by_type = agp_generic_alloc_by_type,
+ .free_by_type = agp_generic_free_by_type,
+ .cant_use_aperture = 1,
+};
+
+static int __devinit agp_intel_i460_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct agp_bridge_data *bridge;
+ u8 cap_ptr;
+
+ cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
+ if (!cap_ptr)
+ return -ENODEV;
+
+ bridge = agp_alloc_bridge();
+ if (!bridge)
+ return -ENOMEM;
+
+ bridge->driver = &intel_i460_driver;
+ bridge->dev = pdev;
+ bridge->capndx = cap_ptr;
+
+ printk(KERN_INFO PFX "Detected Intel 460GX chipset\n");
+
+ pci_set_drvdata(pdev, bridge);
+ return agp_add_bridge(bridge);
+}
+
+static void __devexit agp_intel_i460_remove(struct pci_dev *pdev)
+{
+ struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
+
+ agp_remove_bridge(bridge);
+ agp_put_bridge(bridge);
+}
+
+static struct pci_device_id agp_intel_i460_pci_table[] = {
+ {
+ .class = (PCI_CLASS_BRIDGE_HOST << 8),
+ .class_mask = ~0,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .device = PCI_DEVICE_ID_INTEL_84460GX,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { }
+};
+
+MODULE_DEVICE_TABLE(pci, agp_intel_i460_pci_table);
+
+static struct pci_driver agp_intel_i460_pci_driver = {
+ .name = "agpgart-intel-i460",
+ .id_table = agp_intel_i460_pci_table,
+ .probe = agp_intel_i460_probe,
+ .remove = __devexit_p(agp_intel_i460_remove),
+};
+
+static int __init agp_intel_i460_init(void)
+{
+ if (agp_off)
+ return -EINVAL;
+ return pci_register_driver(&agp_intel_i460_pci_driver);
+}
+
+static void __exit agp_intel_i460_cleanup(void)
+{
+ pci_unregister_driver(&agp_intel_i460_pci_driver);
+}
+
+module_init(agp_intel_i460_init);
+module_exit(agp_intel_i460_cleanup);
+
+MODULE_AUTHOR("Chris Ahna <Christopher.J.Ahna@intel.com>");
+MODULE_LICENSE("GPL and additional rights");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-25 00:11:12 +0000