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MIPS: Give Octeon+ CPUs their own cputype.

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This allows us to treat them differently at runtime.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/951/
Patchwork: http://patchwork.linux-mips.org/patch/987/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2010-02-10 15:12:48 -08:00 committed by Ralf Baechle
parent 6dd9344cfc
commit 6f329468f3
3 changed files with 12 additions and 6 deletions
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2
arch/mips/include/asm/cpu.h
View File

@ -224,7 +224,7 @@ enum cpu_type_enum {
* MIPS64 class processors
*/
CPU_5KC, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,
CPU_CAVIUM_OCTEON,
CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS,
CPU_LAST
};

9
arch/mips/kernel/cpu-probe.c
View File

@ -162,6 +162,7 @@ void __init check_wait(void)
case CPU_BCM6348:
case CPU_BCM6358:
case CPU_CAVIUM_OCTEON:
case CPU_CAVIUM_OCTEON_PLUS:
cpu_wait = r4k_wait;
break;
@ -911,12 +912,16 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu)
case PRID_IMP_CAVIUM_CN38XX:
case PRID_IMP_CAVIUM_CN31XX:
case PRID_IMP_CAVIUM_CN30XX:
c->cputype = CPU_CAVIUM_OCTEON;
__cpu_name[cpu] = "Cavium Octeon";
goto platform;
case PRID_IMP_CAVIUM_CN58XX:
case PRID_IMP_CAVIUM_CN56XX:
case PRID_IMP_CAVIUM_CN50XX:
case PRID_IMP_CAVIUM_CN52XX:
c->cputype = CPU_CAVIUM_OCTEON;
__cpu_name[cpu] = "Cavium Octeon";
c->cputype = CPU_CAVIUM_OCTEON_PLUS;
__cpu_name[cpu] = "Cavium Octeon+";
platform:
if (cpu == 0)
__elf_platform = "octeon";
break;

7
arch/mips/mm/c-octeon.c
View File

@ -183,6 +183,7 @@ static void __cpuinit probe_octeon(void)
switch (c->cputype) {
case CPU_CAVIUM_OCTEON:
case CPU_CAVIUM_OCTEON_PLUS:
config1 = read_c0_config1();
c->icache.linesz = 2 << ((config1 >> 19) & 7);
c->icache.sets = 64 << ((config1 >> 22) & 7);
@ -192,10 +193,10 @@ static void __cpuinit probe_octeon(void)
c->icache.sets * c->icache.ways * c->icache.linesz;
c->icache.waybit = ffs(icache_size / c->icache.ways) - 1;
c->dcache.linesz = 128;
if (OCTEON_IS_MODEL(OCTEON_CN3XXX))
c->dcache.sets = 1; /* CN3XXX has one Dcache set */
else
if (c->cputype == CPU_CAVIUM_OCTEON_PLUS)
c->dcache.sets = 2; /* CN5XXX has two Dcache sets */
else
c->dcache.sets = 1; /* CN3XXX has one Dcache set */
c->dcache.ways = 64;
dcache_size =
c->dcache.sets * c->dcache.ways * c->dcache.linesz;