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linux/drivers/char/agp/via-agp.c
Thomas Hellstrom a030ce4477 [AGPGART] Allow drm-populated agp memory types 
This patch allows drm to populate an agpgart structure with pages of its own.
It's needed for the new drm memory manager which dynamically flips pages in and out of AGP.

The patch modifies the generic functions as well as the intel agp driver. The intel drm driver is
currently the only one supporting the new memory manager.

Other agp drivers may need some minor fixing up once they have a corresponding memory manager enabled drm driver.

AGP memory types >= AGP_USER_TYPES are not populated by the agpgart driver, but the drm is expected
to do that, as well as taking care of cache- and tlb flushing when needed.

It's not possible to request these types from user space using agpgart ioctls.

The Intel driver also gets a new memory type for pages that can be bound cached to the intel GTT.

Signed-off-by: Thomas Hellstrom <thomas@tungstengraphics.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2007-02-03 17:16:24 -05:00

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/*
* VIA AGPGART routines.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/agp_backend.h>
#include "agp.h"
static const struct pci_device_id agp_via_pci_table[];
#define VIA_GARTCTRL 0x80
#define VIA_APSIZE 0x84
#define VIA_ATTBASE 0x88
#define VIA_AGP3_GARTCTRL 0x90
#define VIA_AGP3_APSIZE 0x94
#define VIA_AGP3_ATTBASE 0x98
#define VIA_AGPSEL 0xfd
static int via_fetch_size(void)
{
int i;
u8 temp;
struct aper_size_info_8 *values;
values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
pci_read_config_byte(agp_bridge->dev, VIA_APSIZE, &temp);
for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
if (temp == 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;
}
}
printk(KERN_ERR PFX "Unknown aperture size from AGP bridge (0x%x)\n", temp);
return 0;
}
static int via_configure(void)
{
u32 temp;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
current_size->size_value);
/* address to map too */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* GART control register */
pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, 0x0000000f);
/* attbase - aperture GATT base */
pci_write_config_dword(agp_bridge->dev, VIA_ATTBASE,
(agp_bridge->gatt_bus_addr & 0xfffff000) | 3);
return 0;
}
static void via_cleanup(void)
{
struct aper_size_info_8 *previous_size;
previous_size = A_SIZE_8(agp_bridge->previous_size);
pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
previous_size->size_value);
/* Do not disable by writing 0 to VIA_ATTBASE, it screws things up
* during reinitialization.
*/
}
static void via_tlbflush(struct agp_memory *mem)
{
u32 temp;
pci_read_config_dword(agp_bridge->dev, VIA_GARTCTRL, &temp);
temp |= (1<<7);
pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
temp &= ~(1<<7);
pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
}
static struct aper_size_info_8 via_generic_sizes[9] =
{
{256, 65536, 6, 0},
{128, 32768, 5, 128},
{64, 16384, 4, 192},
{32, 8192, 3, 224},
{16, 4096, 2, 240},
{8, 2048, 1, 248},
{4, 1024, 0, 252},
{2, 512, 0, 254},
{1, 256, 0, 255}
};
static int via_fetch_size_agp3(void)
{
int i;
u16 temp;
struct aper_size_info_16 *values;
values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
pci_read_config_word(agp_bridge->dev, VIA_AGP3_APSIZE, &temp);
temp &= 0xfff;
for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
if (temp == 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;
}
static int via_configure_agp3(void)
{
u32 temp;
struct aper_size_info_16 *current_size;
current_size = A_SIZE_16(agp_bridge->current_size);
/* address to map too */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture GATT base */
pci_write_config_dword(agp_bridge->dev, VIA_AGP3_ATTBASE,
agp_bridge->gatt_bus_addr & 0xfffff000);
/* 1. Enable GTLB in RX90<7>, all AGP aperture access needs to fetch
* translation table first.
* 2. Enable AGP aperture in RX91<0>. This bit controls the enabling of the
* graphics AGP aperture for the AGP3.0 port.
*/
pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp | (3<<7));
return 0;
}
static void via_cleanup_agp3(void)
{
struct aper_size_info_16 *previous_size;
previous_size = A_SIZE_16(agp_bridge->previous_size);
pci_write_config_byte(agp_bridge->dev, VIA_APSIZE, previous_size->size_value);
}
static void via_tlbflush_agp3(struct agp_memory *mem)
{
u32 temp;
pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp & ~(1<<7));
pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp);
}
static struct agp_bridge_driver via_agp3_driver = {
.owner = THIS_MODULE,
.aperture_sizes = agp3_generic_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 10,
.configure = via_configure_agp3,
.fetch_size = via_fetch_size_agp3,
.cleanup = via_cleanup_agp3,
.tlb_flush = via_tlbflush_agp3,
.mask_memory = agp_generic_mask_memory,
.masks = NULL,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
static struct agp_bridge_driver via_driver = {
.owner = THIS_MODULE,
.aperture_sizes = via_generic_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 9,
.configure = via_configure,
.fetch_size = via_fetch_size,
.cleanup = via_cleanup,
.tlb_flush = via_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = NULL,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
static struct agp_device_ids via_agp_device_ids[] __devinitdata =
{
{
.device_id = PCI_DEVICE_ID_VIA_82C597_0,
.chipset_name = "Apollo VP3",
},
{
.device_id = PCI_DEVICE_ID_VIA_82C598_0,
.chipset_name = "Apollo MVP3",
},
{
.device_id = PCI_DEVICE_ID_VIA_8501_0,
.chipset_name = "Apollo MVP4",
},
/* VT8601 */
{
.device_id = PCI_DEVICE_ID_VIA_8601_0,
.chipset_name = "Apollo ProMedia/PLE133Ta",
},
/* VT82C693A / VT28C694T */
{
.device_id = PCI_DEVICE_ID_VIA_82C691_0,
.chipset_name = "Apollo Pro 133",
},
{
.device_id = PCI_DEVICE_ID_VIA_8371_0,
.chipset_name = "KX133",
},
/* VT8633 */
{
.device_id = PCI_DEVICE_ID_VIA_8633_0,
.chipset_name = "Pro 266",
},
{
.device_id = PCI_DEVICE_ID_VIA_XN266,
.chipset_name = "Apollo Pro266",
},
/* VT8361 */
{
.device_id = PCI_DEVICE_ID_VIA_8361,
.chipset_name = "KLE133",
},
/* VT8365 / VT8362 */
{
.device_id = PCI_DEVICE_ID_VIA_8363_0,
.chipset_name = "Twister-K/KT133x/KM133",
},
/* VT8753A */
{
.device_id = PCI_DEVICE_ID_VIA_8753_0,
.chipset_name = "P4X266",
},
/* VT8366 */
{
.device_id = PCI_DEVICE_ID_VIA_8367_0,
.chipset_name = "KT266/KY266x/KT333",
},
/* VT8633 (for CuMine/ Celeron) */
{
.device_id = PCI_DEVICE_ID_VIA_8653_0,
.chipset_name = "Pro266T",
},
/* KM266 / PM266 */
{
.device_id = PCI_DEVICE_ID_VIA_XM266,
.chipset_name = "PM266/KM266",
},
/* CLE266 */
{
.device_id = PCI_DEVICE_ID_VIA_862X_0,
.chipset_name = "CLE266",
},
{
.device_id = PCI_DEVICE_ID_VIA_8377_0,
.chipset_name = "KT400/KT400A/KT600",
},
/* VT8604 / VT8605 / VT8603
* (Apollo Pro133A chipset with S3 Savage4) */
{
.device_id = PCI_DEVICE_ID_VIA_8605_0,
.chipset_name = "ProSavage PM133/PL133/PN133"
},
/* P4M266x/P4N266 */
{
.device_id = PCI_DEVICE_ID_VIA_8703_51_0,
.chipset_name = "P4M266x/P4N266",
},
/* VT8754 */
{
.device_id = PCI_DEVICE_ID_VIA_8754C_0,
.chipset_name = "PT800",
},
/* P4X600 */
{
.device_id = PCI_DEVICE_ID_VIA_8763_0,
.chipset_name = "P4X600"
},
/* KM400 */
{
.device_id = PCI_DEVICE_ID_VIA_8378_0,
.chipset_name = "KM400/KM400A",
},
/* PT880 */
{
.device_id = PCI_DEVICE_ID_VIA_PT880,
.chipset_name = "PT880",
},
/* PT880 Ultra */
{
.device_id = PCI_DEVICE_ID_VIA_PT880ULTRA,
.chipset_name = "PT880 Ultra",
},
/* PT890 */
{
.device_id = PCI_DEVICE_ID_VIA_8783_0,
.chipset_name = "PT890",
},
/* PM800/PN800/PM880/PN880 */
{
.device_id = PCI_DEVICE_ID_VIA_PX8X0_0,
.chipset_name = "PM800/PN800/PM880/PN880",
},
/* KT880 */
{
.device_id = PCI_DEVICE_ID_VIA_3269_0,
.chipset_name = "KT880",
},
/* KTxxx/Px8xx */
{
.device_id = PCI_DEVICE_ID_VIA_83_87XX_1,
.chipset_name = "VT83xx/VT87xx/KTxxx/Px8xx",
},
/* P4M800 */
{
.device_id = PCI_DEVICE_ID_VIA_3296_0,
.chipset_name = "P4M800",
},
/* P4M800CE */
{
.device_id = PCI_DEVICE_ID_VIA_P4M800CE,
.chipset_name = "VT3314",
},
/* CX700 */
{
.device_id = PCI_DEVICE_ID_VIA_CX700,
.chipset_name = "CX700",
},
/* VT3336 */
{
.device_id = PCI_DEVICE_ID_VIA_VT3336,
.chipset_name = "VT3336",
},
/* P4M890 */
{
.device_id = PCI_DEVICE_ID_VIA_P4M890,
.chipset_name = "P4M890",
},
{ }, /* dummy final entry, always present */
};
/*
* VIA's AGP3 chipsets do magick to put the AGP bridge compliant
* with the same standards version as the graphics card.
*/
static void check_via_agp3 (struct agp_bridge_data *bridge)
{
u8 reg;
pci_read_config_byte(bridge->dev, VIA_AGPSEL, &reg);
/* Check AGP 2.0 compatibility mode. */
if ((reg & (1<<1))==0)
bridge->driver = &via_agp3_driver;
}
static int __devinit agp_via_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_device_ids *devs = via_agp_device_ids;
struct agp_bridge_data *bridge;
int j = 0;
u8 cap_ptr;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return -ENODEV;
j = ent - agp_via_pci_table;
printk (KERN_INFO PFX "Detected VIA %s chipset\n", devs[j].chipset_name);
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
bridge->dev = pdev;
bridge->capndx = cap_ptr;
bridge->driver = &via_driver;
/*
* Garg, there are KT400s with KT266 IDs.
*/
if (pdev->device == PCI_DEVICE_ID_VIA_8367_0) {
/* Is there a KT400 subsystem ? */
if (pdev->subsystem_device == PCI_DEVICE_ID_VIA_8377_0) {
printk(KERN_INFO PFX "Found KT400 in disguise as a KT266.\n");
check_via_agp3(bridge);
}
}
/* If this is an AGP3 bridge, check which mode its in and adjust. */
get_agp_version(bridge);
if (bridge->major_version >= 3)
check_via_agp3(bridge);
/* Fill in the mode register */
pci_read_config_dword(pdev,
bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
}
static void __devexit agp_via_remove(struct pci_dev *pdev)
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
agp_remove_bridge(bridge);
agp_put_bridge(bridge);
}
#ifdef CONFIG_PM
static int agp_via_suspend(struct pci_dev *pdev, pm_message_t state)
{
pci_save_state (pdev);
pci_set_power_state (pdev, PCI_D3hot);
return 0;
}
static int agp_via_resume(struct pci_dev *pdev)
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
pci_set_power_state (pdev, PCI_D0);
pci_restore_state(pdev);
if (bridge->driver == &via_agp3_driver)
return via_configure_agp3();
else if (bridge->driver == &via_driver)
return via_configure();
return 0;
}
#endif /* CONFIG_PM */
/* must be the same order as name table above */
static const struct pci_device_id agp_via_pci_table[] = {
#define ID(x) \
{ \
.class = (PCI_CLASS_BRIDGE_HOST << 8), \
.class_mask = ~0, \
.vendor = PCI_VENDOR_ID_VIA, \
.device = x, \
.subvendor = PCI_ANY_ID, \
.subdevice = PCI_ANY_ID, \
}
ID(PCI_DEVICE_ID_VIA_82C597_0),
ID(PCI_DEVICE_ID_VIA_82C598_0),
ID(PCI_DEVICE_ID_VIA_8501_0),
ID(PCI_DEVICE_ID_VIA_8601_0),
ID(PCI_DEVICE_ID_VIA_82C691_0),
ID(PCI_DEVICE_ID_VIA_8371_0),
ID(PCI_DEVICE_ID_VIA_8633_0),
ID(PCI_DEVICE_ID_VIA_XN266),
ID(PCI_DEVICE_ID_VIA_8361),
ID(PCI_DEVICE_ID_VIA_8363_0),
ID(PCI_DEVICE_ID_VIA_8753_0),
ID(PCI_DEVICE_ID_VIA_8367_0),
ID(PCI_DEVICE_ID_VIA_8653_0),
ID(PCI_DEVICE_ID_VIA_XM266),
ID(PCI_DEVICE_ID_VIA_862X_0),
ID(PCI_DEVICE_ID_VIA_8377_0),
ID(PCI_DEVICE_ID_VIA_8605_0),
ID(PCI_DEVICE_ID_VIA_8703_51_0),
ID(PCI_DEVICE_ID_VIA_8754C_0),
ID(PCI_DEVICE_ID_VIA_8763_0),
ID(PCI_DEVICE_ID_VIA_8378_0),
ID(PCI_DEVICE_ID_VIA_PT880),
ID(PCI_DEVICE_ID_VIA_PT880ULTRA),
ID(PCI_DEVICE_ID_VIA_8783_0),
ID(PCI_DEVICE_ID_VIA_PX8X0_0),
ID(PCI_DEVICE_ID_VIA_3269_0),
ID(PCI_DEVICE_ID_VIA_83_87XX_1),
ID(PCI_DEVICE_ID_VIA_3296_0),
ID(PCI_DEVICE_ID_VIA_P4M800CE),
ID(PCI_DEVICE_ID_VIA_CX700),
ID(PCI_DEVICE_ID_VIA_VT3336),
ID(PCI_DEVICE_ID_VIA_P4M890),
{ }
};
MODULE_DEVICE_TABLE(pci, agp_via_pci_table);
static struct pci_driver agp_via_pci_driver = {
.name = "agpgart-via",
.id_table = agp_via_pci_table,
.probe = agp_via_probe,
.remove = agp_via_remove,
#ifdef CONFIG_PM
.suspend = agp_via_suspend,
.resume = agp_via_resume,
#endif
};
static int __init agp_via_init(void)
{
if (agp_off)
return -EINVAL;
return pci_register_driver(&agp_via_pci_driver);
}
static void __exit agp_via_cleanup(void)
{
pci_unregister_driver(&agp_via_pci_driver);
}
module_init(agp_via_init);
module_exit(agp_via_cleanup);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
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