linux/drivers/char/agp/nvidia-agp.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

474 lines
12 KiB
C

/*
* Nvidia AGPGART routines.
* Based upon a 2.4 agpgart diff by the folks from NVIDIA, and hacked up
* to work in 2.5 by Dave Jones <davej@redhat.com>
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/agp_backend.h>
#include <linux/page-flags.h>
#include <linux/mm.h>
#include <linux/jiffies.h>
#include "agp.h"
/* NVIDIA registers */
#define NVIDIA_0_APSIZE 0x80
#define NVIDIA_1_WBC 0xf0
#define NVIDIA_2_GARTCTRL 0xd0
#define NVIDIA_2_APBASE 0xd8
#define NVIDIA_2_APLIMIT 0xdc
#define NVIDIA_2_ATTBASE(i) (0xe0 + (i) * 4)
#define NVIDIA_3_APBASE 0x50
#define NVIDIA_3_APLIMIT 0x54
static struct _nvidia_private {
struct pci_dev *dev_1;
struct pci_dev *dev_2;
struct pci_dev *dev_3;
volatile u32 __iomem *aperture;
int num_active_entries;
off_t pg_offset;
u32 wbc_mask;
} nvidia_private;
static int nvidia_fetch_size(void)
{
int i;
u8 size_value;
struct aper_size_info_8 *values;
pci_read_config_byte(agp_bridge->dev, NVIDIA_0_APSIZE, &size_value);
size_value &= 0x0f;
values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
if (size_value == 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;
}
#define SYSCFG 0xC0010010
#define IORR_BASE0 0xC0010016
#define IORR_MASK0 0xC0010017
#define AMD_K7_NUM_IORR 2
static int nvidia_init_iorr(u32 base, u32 size)
{
u32 base_hi, base_lo;
u32 mask_hi, mask_lo;
u32 sys_hi, sys_lo;
u32 iorr_addr, free_iorr_addr;
/* Find the iorr that is already used for the base */
/* If not found, determine the uppermost available iorr */
free_iorr_addr = AMD_K7_NUM_IORR;
for (iorr_addr = 0; iorr_addr < AMD_K7_NUM_IORR; iorr_addr++) {
rdmsr(IORR_BASE0 + 2 * iorr_addr, base_lo, base_hi);
rdmsr(IORR_MASK0 + 2 * iorr_addr, mask_lo, mask_hi);
if ((base_lo & 0xfffff000) == (base & 0xfffff000))
break;
if ((mask_lo & 0x00000800) == 0)
free_iorr_addr = iorr_addr;
}
if (iorr_addr >= AMD_K7_NUM_IORR) {
iorr_addr = free_iorr_addr;
if (iorr_addr >= AMD_K7_NUM_IORR)
return -EINVAL;
}
base_hi = 0x0;
base_lo = (base & ~0xfff) | 0x18;
mask_hi = 0xf;
mask_lo = ((~(size - 1)) & 0xfffff000) | 0x800;
wrmsr(IORR_BASE0 + 2 * iorr_addr, base_lo, base_hi);
wrmsr(IORR_MASK0 + 2 * iorr_addr, mask_lo, mask_hi);
rdmsr(SYSCFG, sys_lo, sys_hi);
sys_lo |= 0x00100000;
wrmsr(SYSCFG, sys_lo, sys_hi);
return 0;
}
static int nvidia_configure(void)
{
int i, rc, num_dirs;
u32 apbase, aplimit;
struct aper_size_info_8 *current_size;
u32 temp;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, NVIDIA_0_APSIZE,
current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &apbase);
apbase &= PCI_BASE_ADDRESS_MEM_MASK;
agp_bridge->gart_bus_addr = apbase;
aplimit = apbase + (current_size->size * 1024 * 1024) - 1;
pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_APBASE, apbase);
pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_APLIMIT, aplimit);
pci_write_config_dword(nvidia_private.dev_3, NVIDIA_3_APBASE, apbase);
pci_write_config_dword(nvidia_private.dev_3, NVIDIA_3_APLIMIT, aplimit);
if (0 != (rc = nvidia_init_iorr(apbase, current_size->size * 1024 * 1024)))
return rc;
/* directory size is 64k */
num_dirs = current_size->size / 64;
nvidia_private.num_active_entries = current_size->num_entries;
nvidia_private.pg_offset = 0;
if (num_dirs == 0) {
num_dirs = 1;
nvidia_private.num_active_entries /= (64 / current_size->size);
nvidia_private.pg_offset = (apbase & (64 * 1024 * 1024 - 1) &
~(current_size->size * 1024 * 1024 - 1)) / PAGE_SIZE;
}
/* attbase */
for (i = 0; i < 8; i++) {
pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_ATTBASE(i),
(agp_bridge->gatt_bus_addr + (i % num_dirs) * 64 * 1024) | 1);
}
/* gtlb control */
pci_read_config_dword(nvidia_private.dev_2, NVIDIA_2_GARTCTRL, &temp);
pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_GARTCTRL, temp | 0x11);
/* gart control */
pci_read_config_dword(agp_bridge->dev, NVIDIA_0_APSIZE, &temp);
pci_write_config_dword(agp_bridge->dev, NVIDIA_0_APSIZE, temp | 0x100);
/* map aperture */
nvidia_private.aperture =
(volatile u32 __iomem *) ioremap(apbase, 33 * PAGE_SIZE);
if (!nvidia_private.aperture)
return -ENOMEM;
return 0;
}
static void nvidia_cleanup(void)
{
struct aper_size_info_8 *previous_size;
u32 temp;
/* gart control */
pci_read_config_dword(agp_bridge->dev, NVIDIA_0_APSIZE, &temp);
pci_write_config_dword(agp_bridge->dev, NVIDIA_0_APSIZE, temp & ~(0x100));
/* gtlb control */
pci_read_config_dword(nvidia_private.dev_2, NVIDIA_2_GARTCTRL, &temp);
pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_GARTCTRL, temp & ~(0x11));
/* unmap aperture */
iounmap((void __iomem *) nvidia_private.aperture);
/* restore previous aperture size */
previous_size = A_SIZE_8(agp_bridge->previous_size);
pci_write_config_byte(agp_bridge->dev, NVIDIA_0_APSIZE,
previous_size->size_value);
/* restore iorr for previous aperture size */
nvidia_init_iorr(agp_bridge->gart_bus_addr,
previous_size->size * 1024 * 1024);
}
/*
* Note we can't use the generic routines, even though they are 99% the same.
* Aperture sizes <64M still requires a full 64k GART directory, but
* only use the portion of the TLB entries that correspond to the apertures
* alignment inside the surrounding 64M block.
*/
extern int agp_memory_reserved;
static int nvidia_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
{
int i, j;
int mask_type;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
if ((pg_start + mem->page_count) >
(nvidia_private.num_active_entries - agp_memory_reserved/PAGE_SIZE))
return -EINVAL;
for (j = pg_start; j < (pg_start + mem->page_count); j++) {
if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j)))
return -EBUSY;
}
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = true;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
page_to_phys(mem->pages[i]), mask_type),
agp_bridge->gatt_table+nvidia_private.pg_offset+j);
}
/* PCI Posting. */
readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j - 1);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int nvidia_remove_memory(struct agp_memory *mem, off_t pg_start, int type)
{
int i;
int mask_type;
mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
if (mask_type != 0 || type != mem->type)
return -EINVAL;
if (mem->page_count == 0)
return 0;
for (i = pg_start; i < (mem->page_count + pg_start); i++)
writel(agp_bridge->scratch_page, agp_bridge->gatt_table+nvidia_private.pg_offset+i);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static void nvidia_tlbflush(struct agp_memory *mem)
{
unsigned long end;
u32 wbc_reg, temp;
int i;
/* flush chipset */
if (nvidia_private.wbc_mask) {
pci_read_config_dword(nvidia_private.dev_1, NVIDIA_1_WBC, &wbc_reg);
wbc_reg |= nvidia_private.wbc_mask;
pci_write_config_dword(nvidia_private.dev_1, NVIDIA_1_WBC, wbc_reg);
end = jiffies + 3*HZ;
do {
pci_read_config_dword(nvidia_private.dev_1,
NVIDIA_1_WBC, &wbc_reg);
if (time_before_eq(end, jiffies)) {
printk(KERN_ERR PFX
"TLB flush took more than 3 seconds.\n");
}
} while (wbc_reg & nvidia_private.wbc_mask);
}
/* flush TLB entries */
for (i = 0; i < 32 + 1; i++)
temp = readl(nvidia_private.aperture+(i * PAGE_SIZE / sizeof(u32)));
for (i = 0; i < 32 + 1; i++)
temp = readl(nvidia_private.aperture+(i * PAGE_SIZE / sizeof(u32)));
}
static const struct aper_size_info_8 nvidia_generic_sizes[5] =
{
{512, 131072, 7, 0},
{256, 65536, 6, 8},
{128, 32768, 5, 12},
{64, 16384, 4, 14},
/* The 32M mode still requires a 64k gatt */
{32, 16384, 4, 15}
};
static const struct gatt_mask nvidia_generic_masks[] =
{
{ .mask = 1, .type = 0}
};
static const struct agp_bridge_driver nvidia_driver = {
.owner = THIS_MODULE,
.aperture_sizes = nvidia_generic_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 5,
.configure = nvidia_configure,
.fetch_size = nvidia_fetch_size,
.cleanup = nvidia_cleanup,
.tlb_flush = nvidia_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = nvidia_generic_masks,
.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 = nvidia_insert_memory,
.remove_memory = nvidia_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_alloc_pages = agp_generic_alloc_pages,
.agp_destroy_page = agp_generic_destroy_page,
.agp_destroy_pages = agp_generic_destroy_pages,
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
};
static int __devinit agp_nvidia_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_bridge_data *bridge;
u8 cap_ptr;
nvidia_private.dev_1 =
pci_get_bus_and_slot((unsigned int)pdev->bus->number, PCI_DEVFN(0, 1));
nvidia_private.dev_2 =
pci_get_bus_and_slot((unsigned int)pdev->bus->number, PCI_DEVFN(0, 2));
nvidia_private.dev_3 =
pci_get_bus_and_slot((unsigned int)pdev->bus->number, PCI_DEVFN(30, 0));
if (!nvidia_private.dev_1 || !nvidia_private.dev_2 || !nvidia_private.dev_3) {
printk(KERN_INFO PFX "Detected an NVIDIA nForce/nForce2 "
"chipset, but could not find the secondary devices.\n");
return -ENODEV;
}
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
if (!cap_ptr)
return -ENODEV;
switch (pdev->device) {
case PCI_DEVICE_ID_NVIDIA_NFORCE:
printk(KERN_INFO PFX "Detected NVIDIA nForce chipset\n");
nvidia_private.wbc_mask = 0x00010000;
break;
case PCI_DEVICE_ID_NVIDIA_NFORCE2:
printk(KERN_INFO PFX "Detected NVIDIA nForce2 chipset\n");
nvidia_private.wbc_mask = 0x80000000;
break;
default:
printk(KERN_ERR PFX "Unsupported NVIDIA chipset (device id: %04x)\n",
pdev->device);
return -ENODEV;
}
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
bridge->driver = &nvidia_driver;
bridge->dev_private_data = &nvidia_private,
bridge->dev = pdev;
bridge->capndx = cap_ptr;
/* 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_nvidia_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_nvidia_suspend(struct pci_dev *pdev, pm_message_t state)
{
pci_save_state (pdev);
pci_set_power_state (pdev, 3);
return 0;
}
static int agp_nvidia_resume(struct pci_dev *pdev)
{
/* set power state 0 and restore PCI space */
pci_set_power_state (pdev, 0);
pci_restore_state(pdev);
/* reconfigure AGP hardware again */
nvidia_configure();
return 0;
}
#endif
static struct pci_device_id agp_nvidia_pci_table[] = {
{
.class = (PCI_CLASS_BRIDGE_HOST << 8),
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_NFORCE,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{
.class = (PCI_CLASS_BRIDGE_HOST << 8),
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_NFORCE2,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{ }
};
MODULE_DEVICE_TABLE(pci, agp_nvidia_pci_table);
static struct pci_driver agp_nvidia_pci_driver = {
.name = "agpgart-nvidia",
.id_table = agp_nvidia_pci_table,
.probe = agp_nvidia_probe,
.remove = agp_nvidia_remove,
#ifdef CONFIG_PM
.suspend = agp_nvidia_suspend,
.resume = agp_nvidia_resume,
#endif
};
static int __init agp_nvidia_init(void)
{
if (agp_off)
return -EINVAL;
return pci_register_driver(&agp_nvidia_pci_driver);
}
static void __exit agp_nvidia_cleanup(void)
{
pci_unregister_driver(&agp_nvidia_pci_driver);
pci_dev_put(nvidia_private.dev_1);
pci_dev_put(nvidia_private.dev_2);
pci_dev_put(nvidia_private.dev_3);
}
module_init(agp_nvidia_init);
module_exit(agp_nvidia_cleanup);
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("NVIDIA Corporation");