diff options
Diffstat (limited to 'arch/powerpc/platforms/ps3/spu.c')
| -rw-r--r-- | arch/powerpc/platforms/ps3/spu.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/ps3/spu.c b/arch/powerpc/platforms/ps3/spu.c index 5ad41189b49..a0bca05e26b 100644 --- a/arch/powerpc/platforms/ps3/spu.c +++ b/arch/powerpc/platforms/ps3/spu.c @@ -20,13 +20,16 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/mmzone.h> +#include <linux/export.h> #include <linux/io.h> #include <linux/mm.h> #include <asm/spu.h> #include <asm/spu_priv1.h> #include <asm/lv1call.h> +#include <asm/ps3.h> #include "../cell/spufs/spufs.h" #include "platform.h" @@ -140,12 +143,18 @@ static void _dump_areas(unsigned int spe_id, unsigned long priv2, pr_debug("%s:%d: shadow: %lxh\n", func, line, shadow); } +u64 ps3_get_spe_id(void *arg) +{ + return spu_pdata(arg)->spe_id; +} +EXPORT_SYMBOL_GPL(ps3_get_spe_id); + static unsigned long get_vas_id(void) { - unsigned long id; + u64 id; lv1_get_logical_ppe_id(&id); - lv1_get_virtual_address_space_id_of_ppe(id, &id); + lv1_get_virtual_address_space_id_of_ppe(&id); return id; } @@ -153,14 +162,18 @@ static unsigned long get_vas_id(void) static int __init construct_spu(struct spu *spu) { int result; - unsigned long unused; + u64 unused; + u64 problem_phys; + u64 local_store_phys; result = lv1_construct_logical_spe(PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, PAGE_SHIFT, get_vas_id(), SPE_TYPE_LOGICAL, - &spu_pdata(spu)->priv2_addr, &spu->problem_phys, - &spu->local_store_phys, &unused, + &spu_pdata(spu)->priv2_addr, &problem_phys, + &local_store_phys, &unused, &spu_pdata(spu)->shadow_addr, &spu_pdata(spu)->spe_id); + spu->problem_phys = problem_phys; + spu->local_store_phys = local_store_phys; if (result) { pr_debug("%s:%d: lv1_construct_logical_spe failed: %s\n", @@ -179,20 +192,30 @@ static void spu_unmap(struct spu *spu) iounmap(spu_pdata(spu)->shadow); } +/** + * setup_areas - Map the spu regions into the address space. + * + * The current HV requires the spu shadow regs to be mapped with the + * PTE page protection bits set as read-only (PP=3). This implementation + * uses the low level __ioremap() to bypass the page protection settings + * inforced by ioremap_prot() to get the needed PTE bits set for the + * shadow regs. + */ + static int __init setup_areas(struct spu *spu) { struct table {char* name; unsigned long addr; unsigned long size;}; + static const unsigned long shadow_flags = _PAGE_NO_CACHE | 3; - spu_pdata(spu)->shadow = ioremap_flags(spu_pdata(spu)->shadow_addr, - sizeof(struct spe_shadow), - pgprot_val(PAGE_READONLY) | - _PAGE_NO_CACHE); + spu_pdata(spu)->shadow = __ioremap(spu_pdata(spu)->shadow_addr, + sizeof(struct spe_shadow), + shadow_flags); if (!spu_pdata(spu)->shadow) { pr_debug("%s:%d: ioremap shadow failed\n", __func__, __LINE__); goto fail_ioremap; } - spu->local_store = (__force void *)ioremap_flags(spu->local_store_phys, + spu->local_store = (__force void *)ioremap_prot(spu->local_store_phys, LS_SIZE, _PAGE_NO_CACHE); if (!spu->local_store) { |