2005-04-17 06:20:36 +08:00
|
|
|
/*
|
|
|
|
* UniNorth AGPGART routines.
|
|
|
|
*/
|
|
|
|
#include <linux/module.h>
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|
|
|
#include <linux/pci.h>
|
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>
2010-03-24 16:04:11 +08:00
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#include <linux/slab.h>
|
2005-04-17 06:20:36 +08:00
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#include <linux/init.h>
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#include <linux/pagemap.h>
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#include <linux/agp_backend.h>
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#include <linux/delay.h>
|
2009-08-04 19:51:04 +08:00
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#include <linux/vmalloc.h>
|
2005-04-17 06:20:36 +08:00
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#include <asm/uninorth.h>
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#include <asm/pci-bridge.h>
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|
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#include <asm/prom.h>
|
2005-04-17 06:24:19 +08:00
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#include <asm/pmac_feature.h>
|
2005-04-17 06:20:36 +08:00
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|
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#include "agp.h"
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/*
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* NOTES for uninorth3 (G5 AGP) supports :
|
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*
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* There maybe also possibility to have bigger cache line size for
|
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* agp (see pmac_pci.c and look for cache line). Need to be investigated
|
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* by someone.
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*
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* PAGE size are hardcoded but this may change, see asm/page.h.
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*
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* Jerome Glisse <j.glisse@gmail.com>
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|
|
*/
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static int uninorth_rev;
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static int is_u3;
|
2010-04-20 23:43:34 +08:00
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|
|
static u32 scratch_value;
|
2005-04-17 06:20:36 +08:00
|
|
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|
2009-08-04 19:51:03 +08:00
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|
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#define DEFAULT_APERTURE_SIZE 256
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|
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#define DEFAULT_APERTURE_STRING "256"
|
2008-11-23 01:36:34 +08:00
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|
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static char *aperture = NULL;
|
2005-04-17 06:24:19 +08:00
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|
2005-04-17 06:20:36 +08:00
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static int uninorth_fetch_size(void)
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|
|
{
|
2006-10-04 20:56:44 +08:00
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|
|
int i, size = 0;
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|
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struct aper_size_info_32 *values =
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A_SIZE_32(agp_bridge->driver->aperture_sizes);
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|
if (aperture) {
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|
|
char *save = aperture;
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size = memparse(aperture, &aperture) >> 20;
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aperture = save;
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for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++)
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|
|
if (size == values[i].size)
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|
|
break;
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|
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if (i == agp_bridge->driver->num_aperture_sizes) {
|
2008-07-31 03:26:51 +08:00
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|
|
dev_err(&agp_bridge->dev->dev, "invalid aperture size, "
|
|
|
|
"using default\n");
|
2006-10-04 20:56:44 +08:00
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|
size = 0;
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aperture = NULL;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
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|
}
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|
2006-10-04 20:56:44 +08:00
|
|
|
if (!size) {
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for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++)
|
2009-08-04 19:51:03 +08:00
|
|
|
if (values[i].size == DEFAULT_APERTURE_SIZE)
|
2006-10-04 20:56:44 +08:00
|
|
|
break;
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
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|
2006-10-04 20:56:44 +08:00
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|
|
agp_bridge->previous_size =
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|
|
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agp_bridge->current_size = (void *)(values + i);
|
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|
agp_bridge->aperture_size_idx = i;
|
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|
|
return values[i].size;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
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|
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static void uninorth_tlbflush(struct agp_memory *mem)
|
|
|
|
{
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|
u32 ctrl = UNI_N_CFG_GART_ENABLE;
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|
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if (is_u3)
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|
|
|
ctrl |= U3_N_CFG_GART_PERFRD;
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|
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pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
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|
|
|
ctrl | UNI_N_CFG_GART_INVAL);
|
|
|
|
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, ctrl);
|
|
|
|
|
2011-05-19 22:08:39 +08:00
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|
|
if (!mem && uninorth_rev <= 0x30) {
|
2005-04-17 06:20:36 +08:00
|
|
|
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
|
|
|
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ctrl | UNI_N_CFG_GART_2xRESET);
|
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|
|
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
|
|
|
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ctrl);
|
|
|
|
}
|
|
|
|
}
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|
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static void uninorth_cleanup(void)
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|
|
|
{
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|
|
|
u32 tmp;
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pci_read_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, &tmp);
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if (!(tmp & UNI_N_CFG_GART_ENABLE))
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|
return;
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tmp |= UNI_N_CFG_GART_INVAL;
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pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, tmp);
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pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, 0);
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if (uninorth_rev <= 0x30) {
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pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
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UNI_N_CFG_GART_2xRESET);
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|
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
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|
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0);
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}
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}
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static int uninorth_configure(void)
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{
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struct aper_size_info_32 *current_size;
|
2006-02-28 13:54:25 +08:00
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|
2005-04-17 06:20:36 +08:00
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|
|
current_size = A_SIZE_32(agp_bridge->current_size);
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|
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|
2008-07-31 03:26:51 +08:00
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dev_info(&agp_bridge->dev->dev, "configuring for size idx: %d\n",
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|
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current_size->size_value);
|
2006-02-28 13:54:25 +08:00
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|
2005-04-17 06:20:36 +08:00
|
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/* aperture size and gatt addr */
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pci_write_config_dword(agp_bridge->dev,
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UNI_N_CFG_GART_BASE,
|
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|
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(agp_bridge->gatt_bus_addr & 0xfffff000)
|
|
|
|
| current_size->size_value);
|
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|
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/* HACK ALERT
|
|
|
|
* UniNorth seem to be buggy enough not to handle properly when
|
|
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|
* the AGP aperture isn't mapped at bus physical address 0
|
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|
|
*/
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|
agp_bridge->gart_bus_addr = 0;
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|
|
|
#ifdef CONFIG_PPC64
|
|
|
|
/* Assume U3 or later on PPC64 systems */
|
|
|
|
/* high 4 bits of GART physical address go in UNI_N_CFG_AGP_BASE */
|
|
|
|
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_AGP_BASE,
|
|
|
|
(agp_bridge->gatt_bus_addr >> 32) & 0xf);
|
|
|
|
#else
|
|
|
|
pci_write_config_dword(agp_bridge->dev,
|
|
|
|
UNI_N_CFG_AGP_BASE, agp_bridge->gart_bus_addr);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (is_u3) {
|
|
|
|
pci_write_config_dword(agp_bridge->dev,
|
|
|
|
UNI_N_CFG_GART_DUMMY_PAGE,
|
2009-08-06 18:20:43 +08:00
|
|
|
page_to_phys(agp_bridge->scratch_page_page) >> 12);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2006-02-28 13:54:25 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-12-06 10:15:56 +08:00
|
|
|
static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
int i, num_entries;
|
|
|
|
void *temp;
|
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|
|
u32 *gp;
|
2009-06-15 22:56:15 +08:00
|
|
|
int mask_type;
|
2005-04-17 06:20:36 +08:00
|
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|
2009-06-15 22:56:15 +08:00
|
|
|
if (type != mem->type)
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|
return -EINVAL;
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|
|
|
|
|
|
mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
|
|
|
|
if (mask_type != 0) {
|
2005-04-17 06:20:36 +08:00
|
|
|
/* We know nothing of memory types */
|
|
|
|
return -EINVAL;
|
2009-06-15 22:56:15 +08:00
|
|
|
}
|
|
|
|
|
2009-12-06 10:15:55 +08:00
|
|
|
if (mem->page_count == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
temp = agp_bridge->current_size;
|
|
|
|
num_entries = A_SIZE_32(temp)->num_entries;
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
if ((pg_start + mem->page_count) > num_entries)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
gp = (u32 *) &agp_bridge->gatt_table[pg_start];
|
|
|
|
for (i = 0; i < mem->page_count; ++i) {
|
2010-04-20 23:43:34 +08:00
|
|
|
if (gp[i] != scratch_value) {
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_info(&agp_bridge->dev->dev,
|
2009-12-06 10:15:56 +08:00
|
|
|
"uninorth_insert_memory: entry 0x%x occupied (%x)\n",
|
2008-07-31 03:26:51 +08:00
|
|
|
i, gp[i]);
|
2005-04-17 06:20:36 +08:00
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < mem->page_count; i++) {
|
2009-12-06 10:15:56 +08:00
|
|
|
if (is_u3)
|
|
|
|
gp[i] = (page_to_phys(mem->pages[i]) >> PAGE_SHIFT) | 0x80000000UL;
|
|
|
|
else
|
|
|
|
gp[i] = cpu_to_le32((page_to_phys(mem->pages[i]) & 0xFFFFF000UL) |
|
|
|
|
0x1UL);
|
2009-06-12 12:11:41 +08:00
|
|
|
flush_dcache_range((unsigned long)__va(page_to_phys(mem->pages[i])),
|
|
|
|
(unsigned long)__va(page_to_phys(mem->pages[i]))+0x1000);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
mb();
|
|
|
|
uninorth_tlbflush(mem);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-12-06 10:15:56 +08:00
|
|
|
int uninorth_remove_memory(struct agp_memory *mem, off_t pg_start, int type)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
size_t i;
|
|
|
|
u32 *gp;
|
2009-12-06 10:15:55 +08:00
|
|
|
int mask_type;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-12-06 10:15:55 +08:00
|
|
|
if (type != mem->type)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
|
|
|
|
if (mask_type != 0) {
|
2005-04-17 06:20:36 +08:00
|
|
|
/* We know nothing of memory types */
|
|
|
|
return -EINVAL;
|
2009-12-06 10:15:55 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
if (mem->page_count == 0)
|
|
|
|
return 0;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
gp = (u32 *) &agp_bridge->gatt_table[pg_start];
|
2010-04-20 23:43:34 +08:00
|
|
|
for (i = 0; i < mem->page_count; ++i) {
|
|
|
|
gp[i] = scratch_value;
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
mb();
|
|
|
|
uninorth_tlbflush(mem);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode)
|
|
|
|
{
|
|
|
|
u32 command, scratch, status;
|
|
|
|
int timeout;
|
|
|
|
|
|
|
|
pci_read_config_dword(bridge->dev,
|
|
|
|
bridge->capndx + PCI_AGP_STATUS,
|
|
|
|
&status);
|
|
|
|
|
|
|
|
command = agp_collect_device_status(bridge, mode, status);
|
|
|
|
command |= PCI_AGP_COMMAND_AGP;
|
2006-02-28 13:54:25 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
if (uninorth_rev == 0x21) {
|
|
|
|
/*
|
|
|
|
* Darwin disable AGP 4x on this revision, thus we
|
|
|
|
* may assume it's broken. This is an AGP2 controller.
|
|
|
|
*/
|
|
|
|
command &= ~AGPSTAT2_4X;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((uninorth_rev >= 0x30) && (uninorth_rev <= 0x33)) {
|
|
|
|
/*
|
2009-07-16 23:13:03 +08:00
|
|
|
* We need to set REQ_DEPTH to 7 for U3 versions 1.0, 2.1,
|
2005-04-17 06:20:36 +08:00
|
|
|
* 2.2 and 2.3, Darwin do so.
|
|
|
|
*/
|
|
|
|
if ((command >> AGPSTAT_RQ_DEPTH_SHIFT) > 7)
|
|
|
|
command = (command & ~AGPSTAT_RQ_DEPTH)
|
|
|
|
| (7 << AGPSTAT_RQ_DEPTH_SHIFT);
|
|
|
|
}
|
|
|
|
|
|
|
|
uninorth_tlbflush(NULL);
|
|
|
|
|
|
|
|
timeout = 0;
|
|
|
|
do {
|
|
|
|
pci_write_config_dword(bridge->dev,
|
|
|
|
bridge->capndx + PCI_AGP_COMMAND,
|
|
|
|
command);
|
|
|
|
pci_read_config_dword(bridge->dev,
|
|
|
|
bridge->capndx + PCI_AGP_COMMAND,
|
|
|
|
&scratch);
|
|
|
|
} while ((scratch & PCI_AGP_COMMAND_AGP) == 0 && ++timeout < 1000);
|
|
|
|
if ((scratch & PCI_AGP_COMMAND_AGP) == 0)
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_err(&bridge->dev->dev, "can't write UniNorth AGP "
|
|
|
|
"command register\n");
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (uninorth_rev >= 0x30) {
|
|
|
|
/* This is an AGP V3 */
|
2008-03-27 05:10:02 +08:00
|
|
|
agp_device_command(command, (status & AGPSTAT_MODE_3_0) != 0);
|
2005-04-17 06:20:36 +08:00
|
|
|
} else {
|
|
|
|
/* AGP V2 */
|
2008-03-27 05:10:02 +08:00
|
|
|
agp_device_command(command, false);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
uninorth_tlbflush(NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_PM
|
2005-04-17 06:24:19 +08:00
|
|
|
/*
|
|
|
|
* These Power Management routines are _not_ called by the normal PCI PM layer,
|
|
|
|
* but directly by the video driver through function pointers in the device
|
|
|
|
* tree.
|
|
|
|
*/
|
|
|
|
static int agp_uninorth_suspend(struct pci_dev *pdev)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2005-04-17 06:24:19 +08:00
|
|
|
struct agp_bridge_data *bridge;
|
2005-04-17 06:20:36 +08:00
|
|
|
u32 cmd;
|
|
|
|
u8 agp;
|
|
|
|
struct pci_dev *device = NULL;
|
|
|
|
|
2005-04-17 06:24:19 +08:00
|
|
|
bridge = agp_find_bridge(pdev);
|
|
|
|
if (bridge == NULL)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
/* Only one suspend supported */
|
|
|
|
if (bridge->dev_private_data)
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* turn off AGP on the video chip, if it was enabled */
|
|
|
|
for_each_pci_dev(device) {
|
|
|
|
/* Don't touch the bridge yet, device first */
|
|
|
|
if (device == pdev)
|
|
|
|
continue;
|
|
|
|
/* Only deal with devices on the same bus here, no Mac has a P2P
|
|
|
|
* bridge on the AGP port, and mucking around the entire PCI
|
|
|
|
* tree is source of problems on some machines because of a bug
|
|
|
|
* in some versions of pci_find_capability() when hitting a dead
|
|
|
|
* device
|
|
|
|
*/
|
|
|
|
if (device->bus != pdev->bus)
|
|
|
|
continue;
|
|
|
|
agp = pci_find_capability(device, PCI_CAP_ID_AGP);
|
|
|
|
if (!agp)
|
|
|
|
continue;
|
|
|
|
pci_read_config_dword(device, agp + PCI_AGP_COMMAND, &cmd);
|
|
|
|
if (!(cmd & PCI_AGP_COMMAND_AGP))
|
|
|
|
continue;
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_info(&pdev->dev, "disabling AGP on device %s\n",
|
|
|
|
pci_name(device));
|
2005-04-17 06:20:36 +08:00
|
|
|
cmd &= ~PCI_AGP_COMMAND_AGP;
|
|
|
|
pci_write_config_dword(device, agp + PCI_AGP_COMMAND, cmd);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* turn off AGP on the bridge */
|
|
|
|
agp = pci_find_capability(pdev, PCI_CAP_ID_AGP);
|
|
|
|
pci_read_config_dword(pdev, agp + PCI_AGP_COMMAND, &cmd);
|
2006-06-02 11:19:35 +08:00
|
|
|
bridge->dev_private_data = (void *)(long)cmd;
|
2005-04-17 06:20:36 +08:00
|
|
|
if (cmd & PCI_AGP_COMMAND_AGP) {
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_info(&pdev->dev, "disabling AGP on bridge\n");
|
2005-04-17 06:20:36 +08:00
|
|
|
cmd &= ~PCI_AGP_COMMAND_AGP;
|
|
|
|
pci_write_config_dword(pdev, agp + PCI_AGP_COMMAND, cmd);
|
|
|
|
}
|
|
|
|
/* turn off the GART */
|
|
|
|
uninorth_cleanup();
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int agp_uninorth_resume(struct pci_dev *pdev)
|
|
|
|
{
|
2005-04-17 06:24:19 +08:00
|
|
|
struct agp_bridge_data *bridge;
|
|
|
|
u32 command;
|
|
|
|
|
|
|
|
bridge = agp_find_bridge(pdev);
|
|
|
|
if (bridge == NULL)
|
|
|
|
return -ENODEV;
|
|
|
|
|
2006-06-02 11:19:35 +08:00
|
|
|
command = (long)bridge->dev_private_data;
|
2005-04-17 06:24:19 +08:00
|
|
|
bridge->dev_private_data = NULL;
|
|
|
|
if (!(command & PCI_AGP_COMMAND_AGP))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
uninorth_agp_enable(bridge, command);
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
}
|
2005-04-17 06:24:19 +08:00
|
|
|
#endif /* CONFIG_PM */
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
|
|
|
|
{
|
|
|
|
char *table;
|
|
|
|
char *table_end;
|
|
|
|
int size;
|
|
|
|
int page_order;
|
|
|
|
int num_entries;
|
|
|
|
int i;
|
|
|
|
void *temp;
|
|
|
|
struct page *page;
|
2009-08-04 19:51:04 +08:00
|
|
|
struct page **pages;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* We can't handle 2 level gatt's */
|
|
|
|
if (bridge->driver->size_type == LVL2_APER_SIZE)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
table = NULL;
|
|
|
|
i = bridge->aperture_size_idx;
|
|
|
|
temp = bridge->current_size;
|
|
|
|
size = page_order = num_entries = 0;
|
|
|
|
|
|
|
|
do {
|
|
|
|
size = A_SIZE_32(temp)->size;
|
|
|
|
page_order = A_SIZE_32(temp)->page_order;
|
|
|
|
num_entries = A_SIZE_32(temp)->num_entries;
|
|
|
|
|
|
|
|
table = (char *) __get_free_pages(GFP_KERNEL, page_order);
|
|
|
|
|
|
|
|
if (table == NULL) {
|
|
|
|
i++;
|
|
|
|
bridge->current_size = A_IDX32(bridge);
|
|
|
|
} else {
|
|
|
|
bridge->aperture_size_idx = i;
|
|
|
|
}
|
|
|
|
} while (!table && (i < bridge->driver->num_aperture_sizes));
|
|
|
|
|
|
|
|
if (table == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2009-08-04 19:51:04 +08:00
|
|
|
pages = kmalloc((1 << page_order) * sizeof(struct page*), GFP_KERNEL);
|
|
|
|
if (pages == NULL)
|
|
|
|
goto enomem;
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
|
|
|
|
|
2009-08-04 19:51:04 +08:00
|
|
|
for (page = virt_to_page(table), i = 0; page <= virt_to_page(table_end);
|
|
|
|
page++, i++) {
|
2005-04-17 06:20:36 +08:00
|
|
|
SetPageReserved(page);
|
2009-08-04 19:51:04 +08:00
|
|
|
pages[i] = page;
|
|
|
|
}
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
bridge->gatt_table_real = (u32 *) table;
|
2009-08-04 19:51:04 +08:00
|
|
|
/* Need to clear out any dirty data still sitting in caches */
|
|
|
|
flush_dcache_range((unsigned long)table,
|
2010-06-02 03:33:08 +08:00
|
|
|
(unsigned long)table_end + 1);
|
2009-08-04 19:51:04 +08:00
|
|
|
bridge->gatt_table = vmap(pages, (1 << page_order), 0, PAGE_KERNEL_NCG);
|
|
|
|
|
|
|
|
if (bridge->gatt_table == NULL)
|
|
|
|
goto enomem;
|
|
|
|
|
2009-07-29 17:25:58 +08:00
|
|
|
bridge->gatt_bus_addr = virt_to_phys(table);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2010-04-20 23:43:34 +08:00
|
|
|
if (is_u3)
|
|
|
|
scratch_value = (page_to_phys(agp_bridge->scratch_page_page) >> PAGE_SHIFT) | 0x80000000UL;
|
|
|
|
else
|
|
|
|
scratch_value = cpu_to_le32((page_to_phys(agp_bridge->scratch_page_page) & 0xFFFFF000UL) |
|
|
|
|
0x1UL);
|
2005-04-17 06:20:36 +08:00
|
|
|
for (i = 0; i < num_entries; i++)
|
2010-04-20 23:43:34 +08:00
|
|
|
bridge->gatt_table[i] = scratch_value;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
return 0;
|
2009-08-04 19:51:04 +08:00
|
|
|
|
|
|
|
enomem:
|
|
|
|
kfree(pages);
|
|
|
|
if (table)
|
|
|
|
free_pages((unsigned long)table, page_order);
|
|
|
|
return -ENOMEM;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static int uninorth_free_gatt_table(struct agp_bridge_data *bridge)
|
|
|
|
{
|
|
|
|
int page_order;
|
|
|
|
char *table, *table_end;
|
|
|
|
void *temp;
|
|
|
|
struct page *page;
|
|
|
|
|
|
|
|
temp = bridge->current_size;
|
|
|
|
page_order = A_SIZE_32(temp)->page_order;
|
|
|
|
|
|
|
|
/* Do not worry about freeing memory, because if this is
|
|
|
|
* called, then all agp memory is deallocated and removed
|
|
|
|
* from the table.
|
|
|
|
*/
|
|
|
|
|
2009-08-04 19:51:04 +08:00
|
|
|
vunmap(bridge->gatt_table);
|
2005-04-17 06:20:36 +08:00
|
|
|
table = (char *) bridge->gatt_table_real;
|
|
|
|
table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
|
|
|
|
|
|
|
|
for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
|
|
|
|
ClearPageReserved(page);
|
|
|
|
|
|
|
|
free_pages((unsigned long) bridge->gatt_table_real, page_order);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void null_cache_flush(void)
|
|
|
|
{
|
|
|
|
mb();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup function */
|
|
|
|
|
2009-08-04 19:51:03 +08:00
|
|
|
static const struct aper_size_info_32 uninorth_sizes[] =
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
{256, 65536, 6, 64},
|
|
|
|
{128, 32768, 5, 32},
|
|
|
|
{64, 16384, 4, 16},
|
|
|
|
{32, 8192, 3, 8},
|
|
|
|
{16, 4096, 2, 4},
|
|
|
|
{8, 2048, 1, 2},
|
|
|
|
{4, 1024, 0, 1}
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Not sure that u3 supports that high aperture sizes but it
|
|
|
|
* would strange if it did not :)
|
|
|
|
*/
|
2009-08-04 19:51:03 +08:00
|
|
|
static const struct aper_size_info_32 u3_sizes[] =
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
{512, 131072, 7, 128},
|
|
|
|
{256, 65536, 6, 64},
|
|
|
|
{128, 32768, 5, 32},
|
|
|
|
{64, 16384, 4, 16},
|
|
|
|
{32, 8192, 3, 8},
|
|
|
|
{16, 4096, 2, 4},
|
|
|
|
{8, 2048, 1, 2},
|
|
|
|
{4, 1024, 0, 1}
|
|
|
|
};
|
|
|
|
|
2007-02-27 13:13:02 +08:00
|
|
|
const struct agp_bridge_driver uninorth_agp_driver = {
|
2005-04-17 06:20:36 +08:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.aperture_sizes = (void *)uninorth_sizes,
|
|
|
|
.size_type = U32_APER_SIZE,
|
2009-08-04 19:51:03 +08:00
|
|
|
.num_aperture_sizes = ARRAY_SIZE(uninorth_sizes),
|
2005-04-17 06:20:36 +08:00
|
|
|
.configure = uninorth_configure,
|
|
|
|
.fetch_size = uninorth_fetch_size,
|
|
|
|
.cleanup = uninorth_cleanup,
|
|
|
|
.tlb_flush = uninorth_tlbflush,
|
|
|
|
.mask_memory = agp_generic_mask_memory,
|
|
|
|
.masks = NULL,
|
|
|
|
.cache_flush = null_cache_flush,
|
|
|
|
.agp_enable = uninorth_agp_enable,
|
|
|
|
.create_gatt_table = uninorth_create_gatt_table,
|
|
|
|
.free_gatt_table = uninorth_free_gatt_table,
|
|
|
|
.insert_memory = uninorth_insert_memory,
|
2009-12-06 10:15:56 +08:00
|
|
|
.remove_memory = uninorth_remove_memory,
|
2005-04-17 06:20:36 +08:00
|
|
|
.alloc_by_type = agp_generic_alloc_by_type,
|
|
|
|
.free_by_type = agp_generic_free_by_type,
|
|
|
|
.agp_alloc_page = agp_generic_alloc_page,
|
2008-08-22 01:15:46 +08:00
|
|
|
.agp_alloc_pages = agp_generic_alloc_pages,
|
2005-04-17 06:20:36 +08:00
|
|
|
.agp_destroy_page = agp_generic_destroy_page,
|
2008-08-22 01:15:46 +08:00
|
|
|
.agp_destroy_pages = agp_generic_destroy_pages,
|
2007-01-23 17:33:43 +08:00
|
|
|
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
|
2008-03-27 05:10:02 +08:00
|
|
|
.cant_use_aperture = true,
|
2010-04-20 23:43:34 +08:00
|
|
|
.needs_scratch_page = true,
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2007-02-27 13:13:02 +08:00
|
|
|
const struct agp_bridge_driver u3_agp_driver = {
|
2005-04-17 06:20:36 +08:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.aperture_sizes = (void *)u3_sizes,
|
|
|
|
.size_type = U32_APER_SIZE,
|
2009-08-04 19:51:03 +08:00
|
|
|
.num_aperture_sizes = ARRAY_SIZE(u3_sizes),
|
2005-04-17 06:20:36 +08:00
|
|
|
.configure = uninorth_configure,
|
|
|
|
.fetch_size = uninorth_fetch_size,
|
|
|
|
.cleanup = uninorth_cleanup,
|
|
|
|
.tlb_flush = uninorth_tlbflush,
|
|
|
|
.mask_memory = agp_generic_mask_memory,
|
|
|
|
.masks = NULL,
|
|
|
|
.cache_flush = null_cache_flush,
|
|
|
|
.agp_enable = uninorth_agp_enable,
|
|
|
|
.create_gatt_table = uninorth_create_gatt_table,
|
|
|
|
.free_gatt_table = uninorth_free_gatt_table,
|
2009-12-06 10:15:56 +08:00
|
|
|
.insert_memory = uninorth_insert_memory,
|
|
|
|
.remove_memory = uninorth_remove_memory,
|
2005-04-17 06:20:36 +08:00
|
|
|
.alloc_by_type = agp_generic_alloc_by_type,
|
|
|
|
.free_by_type = agp_generic_free_by_type,
|
|
|
|
.agp_alloc_page = agp_generic_alloc_page,
|
2008-08-22 01:15:46 +08:00
|
|
|
.agp_alloc_pages = agp_generic_alloc_pages,
|
2005-04-17 06:20:36 +08:00
|
|
|
.agp_destroy_page = agp_generic_destroy_page,
|
2008-08-25 18:22:21 +08:00
|
|
|
.agp_destroy_pages = agp_generic_destroy_pages,
|
2007-01-23 17:33:43 +08:00
|
|
|
.agp_type_to_mask_type = agp_generic_type_to_mask_type,
|
2008-03-27 05:10:02 +08:00
|
|
|
.cant_use_aperture = true,
|
|
|
|
.needs_scratch_page = true,
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2012-11-20 02:24:36 +08:00
|
|
|
static struct agp_device_ids uninorth_agp_device_ids[] = {
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP,
|
|
|
|
.chipset_name = "UniNorth",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP_P,
|
|
|
|
.chipset_name = "UniNorth/Pangea",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP15,
|
|
|
|
.chipset_name = "UniNorth 1.5",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP2,
|
|
|
|
.chipset_name = "UniNorth 2",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_U3_AGP,
|
|
|
|
.chipset_name = "U3",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_U3L_AGP,
|
|
|
|
.chipset_name = "U3L",
|
|
|
|
},
|
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_U3H_AGP,
|
|
|
|
.chipset_name = "U3H",
|
|
|
|
},
|
2005-11-14 08:06:48 +08:00
|
|
|
{
|
|
|
|
.device_id = PCI_DEVICE_ID_APPLE_IPID2_AGP,
|
|
|
|
.chipset_name = "UniNorth/Intrepid2",
|
|
|
|
},
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
static int __devinit agp_uninorth_probe(struct pci_dev *pdev,
|
|
|
|
const struct pci_device_id *ent)
|
|
|
|
{
|
|
|
|
struct agp_device_ids *devs = uninorth_agp_device_ids;
|
|
|
|
struct agp_bridge_data *bridge;
|
|
|
|
struct device_node *uninorth_node;
|
|
|
|
u8 cap_ptr;
|
|
|
|
int j;
|
|
|
|
|
|
|
|
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
|
|
|
|
if (cap_ptr == 0)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
/* probe for known chipsets */
|
|
|
|
for (j = 0; devs[j].chipset_name != NULL; ++j) {
|
|
|
|
if (pdev->device == devs[j].device_id) {
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_info(&pdev->dev, "Apple %s chipset\n",
|
|
|
|
devs[j].chipset_name);
|
2005-04-17 06:20:36 +08:00
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-07-31 03:26:51 +08:00
|
|
|
dev_err(&pdev->dev, "unsupported Apple chipset [%04x/%04x]\n",
|
|
|
|
pdev->vendor, pdev->device);
|
2005-04-17 06:20:36 +08:00
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
found:
|
|
|
|
/* Set revision to 0 if we could not read it. */
|
|
|
|
uninorth_rev = 0;
|
|
|
|
is_u3 = 0;
|
|
|
|
/* Locate core99 Uni-N */
|
|
|
|
uninorth_node = of_find_node_by_name(NULL, "uni-n");
|
|
|
|
/* Locate G5 u3 */
|
|
|
|
if (uninorth_node == NULL) {
|
|
|
|
is_u3 = 1;
|
|
|
|
uninorth_node = of_find_node_by_name(NULL, "u3");
|
|
|
|
}
|
|
|
|
if (uninorth_node) {
|
2007-05-01 11:54:02 +08:00
|
|
|
const int *revprop = of_get_property(uninorth_node,
|
2006-07-12 13:40:40 +08:00
|
|
|
"device-rev", NULL);
|
2005-04-17 06:20:36 +08:00
|
|
|
if (revprop != NULL)
|
|
|
|
uninorth_rev = *revprop & 0x3f;
|
|
|
|
of_node_put(uninorth_node);
|
|
|
|
}
|
|
|
|
|
2005-04-17 06:24:19 +08:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
/* Inform platform of our suspend/resume caps */
|
|
|
|
pmac_register_agp_pm(pdev, agp_uninorth_suspend, agp_uninorth_resume);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Allocate & setup our driver */
|
2005-04-17 06:20:36 +08:00
|
|
|
bridge = agp_alloc_bridge();
|
|
|
|
if (!bridge)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
if (is_u3)
|
|
|
|
bridge->driver = &u3_agp_driver;
|
|
|
|
else
|
|
|
|
bridge->driver = &uninorth_agp_driver;
|
|
|
|
|
|
|
|
bridge->dev = pdev;
|
|
|
|
bridge->capndx = cap_ptr;
|
|
|
|
bridge->flags = AGP_ERRATA_FASTWRITES;
|
|
|
|
|
|
|
|
/* Fill in the mode register */
|
|
|
|
pci_read_config_dword(pdev, cap_ptr+PCI_AGP_STATUS, &bridge->mode);
|
|
|
|
|
|
|
|
pci_set_drvdata(pdev, bridge);
|
|
|
|
return agp_add_bridge(bridge);
|
|
|
|
}
|
|
|
|
|
2012-11-20 02:26:26 +08:00
|
|
|
static void agp_uninorth_remove(struct pci_dev *pdev)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
|
|
|
|
|
2005-04-17 06:24:19 +08:00
|
|
|
#ifdef CONFIG_PM
|
|
|
|
/* Inform platform of our suspend/resume caps */
|
|
|
|
pmac_register_agp_pm(pdev, NULL, NULL);
|
|
|
|
#endif
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
agp_remove_bridge(bridge);
|
|
|
|
agp_put_bridge(bridge);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pci_device_id agp_uninorth_pci_table[] = {
|
|
|
|
{
|
|
|
|
.class = (PCI_CLASS_BRIDGE_HOST << 8),
|
|
|
|
.class_mask = ~0,
|
|
|
|
.vendor = PCI_VENDOR_ID_APPLE,
|
|
|
|
.device = PCI_ANY_ID,
|
|
|
|
.subvendor = PCI_ANY_ID,
|
|
|
|
.subdevice = PCI_ANY_ID,
|
|
|
|
},
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_DEVICE_TABLE(pci, agp_uninorth_pci_table);
|
|
|
|
|
|
|
|
static struct pci_driver agp_uninorth_pci_driver = {
|
|
|
|
.name = "agpgart-uninorth",
|
|
|
|
.id_table = agp_uninorth_pci_table,
|
|
|
|
.probe = agp_uninorth_probe,
|
|
|
|
.remove = agp_uninorth_remove,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init agp_uninorth_init(void)
|
|
|
|
{
|
|
|
|
if (agp_off)
|
|
|
|
return -EINVAL;
|
|
|
|
return pci_register_driver(&agp_uninorth_pci_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit agp_uninorth_cleanup(void)
|
|
|
|
{
|
|
|
|
pci_unregister_driver(&agp_uninorth_pci_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(agp_uninorth_init);
|
|
|
|
module_exit(agp_uninorth_cleanup);
|
|
|
|
|
2006-10-04 20:56:44 +08:00
|
|
|
module_param(aperture, charp, 0);
|
|
|
|
MODULE_PARM_DESC(aperture,
|
|
|
|
"Aperture size, must be power of two between 4MB and an\n"
|
|
|
|
"\t\tupper limit specific to the UniNorth revision.\n"
|
2009-08-04 19:51:03 +08:00
|
|
|
"\t\tDefault: " DEFAULT_APERTURE_STRING "M");
|
2006-10-04 20:56:44 +08:00
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
MODULE_AUTHOR("Ben Herrenschmidt & Paul Mackerras");
|
|
|
|
MODULE_LICENSE("GPL");
|