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ssb: Look for SPROM at different offset on higher rev CC 

Our offset handling becomes even a little more hackish now. For some reason I
do not understand all offsets as inrelative. It assumes base offset is 0x1000
but it will work for now as we make offsets relative anyway by removing base
0x1000. Should be cleaner however.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2010-03-31 21:59:21 +02:00 committed by John W. Linville
parent d53cdbb94a
commit ea2db495f9
3 changed files with 9 additions and 4 deletions
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9
drivers/ssb/pci.c
View File

@ -167,7 +167,7 @@ err_pci:
}
/* Get the word-offset for a SSB_SPROM_XXX define. */
#define SPOFF(offset) (((offset) - SSB_SPROM_BASE) / sizeof(u16))
#define SPOFF(offset) (((offset) - SSB_SPROM_BASE1) / sizeof(u16))
/* Helper to extract some _offset, which is one of the SSB_SPROM_XXX defines. */
#define SPEX16(_outvar, _offset, _mask, _shift) \
out->_outvar = ((in[SPOFF(_offset)] & (_mask)) >> (_shift))
@ -253,7 +253,7 @@ static int sprom_do_read(struct ssb_bus *bus, u16 *sprom)
int i;
for (i = 0; i < bus->sprom_size; i++)
sprom[i] = ioread16(bus->mmio + SSB_SPROM_BASE + (i * 2));
sprom[i] = ioread16(bus->mmio + bus->sprom_offset + (i * 2));
return 0;
}
@ -284,7 +284,7 @@ static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom)
ssb_printk("75%%");
else if (i % 2)
ssb_printk(".");
writew(sprom[i], bus->mmio + SSB_SPROM_BASE + (i * 2));
writew(sprom[i], bus->mmio + bus->sprom_offset + (i * 2));
mmiowb();
msleep(20);
}
@ -625,6 +625,9 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus,
return -ENODEV;
}
bus->sprom_offset = (bus->chipco.dev->id.revision < 31) ?
SSB_SPROM_BASE1 : SSB_SPROM_BASE31;
buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL);
if (!buf)
goto out;

1
include/linux/ssb/ssb.h
View File

@ -305,6 +305,7 @@ struct ssb_bus {
/* ID information about the Chip. */
u16 chip_id;
u16 chip_rev;
u16 sprom_offset;
u16 sprom_size; /* number of words in sprom */
u8 chip_package;

3
include/linux/ssb/ssb_regs.h
View File

@ -170,7 +170,8 @@
#define SSB_SPROMSIZE_WORDS_R4 220
#define SSB_SPROMSIZE_BYTES_R123 (SSB_SPROMSIZE_WORDS_R123 * sizeof(u16))
#define SSB_SPROMSIZE_BYTES_R4 (SSB_SPROMSIZE_WORDS_R4 * sizeof(u16))
#define SSB_SPROM_BASE 0x1000
#define SSB_SPROM_BASE1 0x1000
#define SSB_SPROM_BASE31 0x0800
#define SSB_SPROM_REVISION 0x107E
#define SSB_SPROM_REVISION_REV 0x00FF /* SPROM Revision number */
#define SSB_SPROM_REVISION_CRC 0xFF00 /* SPROM CRC8 value */