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author | Rob Herring <rob.herring@calxeda.com> | 2013-11-07 16:34:46 (GMT) |
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committer | Rob Herring <rob.herring@calxeda.com> | 2013-11-07 16:34:46 (GMT) |
commit | b5480950c6cbb7b07ab1c1a5af0dc661a1cb6f24 (patch) | |
tree | b5fcb00387a838beb2bcf2f8ed2fd3d6d460c8ae /arch/powerpc/kernel | |
parent | e363bbac316ffb5daaf45d855f82680148cafe20 (diff) | |
parent | 355e62f5ad12b005c862838156262eb2df2f8dff (diff) | |
download | linux-fsl-qoriq-b5480950c6cbb7b07ab1c1a5af0dc661a1cb6f24.tar.xz |
Merge remote-tracking branch 'grant/devicetree/next' into for-next
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/iommu.c | 2 | ||||
-rw-r--r-- | arch/powerpc/kernel/irq.c | 5 | ||||
-rw-r--r-- | arch/powerpc/kernel/pci-common.c | 11 | ||||
-rw-r--r-- | arch/powerpc/kernel/sysfs.c | 18 | ||||
-rw-r--r-- | arch/powerpc/kernel/tm.S | 95 | ||||
-rw-r--r-- | arch/powerpc/kernel/vio.c | 12 |
6 files changed, 97 insertions, 46 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 0adab06..572bb5b 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -661,7 +661,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid) /* number of bytes needed for the bitmap */ sz = BITS_TO_LONGS(tbl->it_size) * sizeof(unsigned long); - page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz)); + page = alloc_pages_node(nid, GFP_KERNEL, get_order(sz)); if (!page) panic("iommu_init_table: Can't allocate %ld bytes\n", sz); tbl->it_map = page_address(page); diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 57d286a..c7cb8c2 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -495,14 +495,15 @@ void __do_irq(struct pt_regs *regs) void do_IRQ(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); - struct thread_info *curtp, *irqtp; + struct thread_info *curtp, *irqtp, *sirqtp; /* Switch to the irq stack to handle this */ curtp = current_thread_info(); irqtp = hardirq_ctx[raw_smp_processor_id()]; + sirqtp = softirq_ctx[raw_smp_processor_id()]; /* Already there ? */ - if (unlikely(curtp == irqtp)) { + if (unlikely(curtp == irqtp || curtp == sirqtp)) { __do_irq(regs); set_irq_regs(old_regs); return; diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 905a24b..a1e3e40 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -228,7 +228,7 @@ int pcibios_add_platform_entries(struct pci_dev *pdev) */ static int pci_read_irq_line(struct pci_dev *pci_dev) { - struct of_irq oirq; + struct of_phandle_args oirq; unsigned int virq; pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev)); @@ -237,7 +237,7 @@ static int pci_read_irq_line(struct pci_dev *pci_dev) memset(&oirq, 0xff, sizeof(oirq)); #endif /* Try to get a mapping from the device-tree */ - if (of_irq_map_pci(pci_dev, &oirq)) { + if (of_irq_parse_pci(pci_dev, &oirq)) { u8 line, pin; /* If that fails, lets fallback to what is in the config @@ -263,11 +263,10 @@ static int pci_read_irq_line(struct pci_dev *pci_dev) irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW); } else { pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n", - oirq.size, oirq.specifier[0], oirq.specifier[1], - of_node_full_name(oirq.controller)); + oirq.args_count, oirq.args[0], oirq.args[1], + of_node_full_name(oirq.np)); - virq = irq_create_of_mapping(oirq.controller, oirq.specifier, - oirq.size); + virq = irq_create_of_mapping(&oirq); } if(virq == NO_IRQ) { pr_debug(" Failed to map !\n"); diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 27a90b9..b4e6676 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -17,6 +17,7 @@ #include <asm/machdep.h> #include <asm/smp.h> #include <asm/pmc.h> +#include <asm/firmware.h> #include "cacheinfo.h" @@ -179,15 +180,25 @@ SYSFS_PMCSETUP(spurr, SPRN_SPURR); SYSFS_PMCSETUP(dscr, SPRN_DSCR); SYSFS_PMCSETUP(pir, SPRN_PIR); +/* + Lets only enable read for phyp resources and + enable write when needed with a separate function. + Lets be conservative and default to pseries. +*/ static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); -static DEVICE_ATTR(purr, 0600, show_purr, store_purr); +static DEVICE_ATTR(purr, 0400, show_purr, store_purr); static DEVICE_ATTR(pir, 0400, show_pir, NULL); unsigned long dscr_default = 0; EXPORT_SYMBOL(dscr_default); +static void add_write_permission_dev_attr(struct device_attribute *attr) +{ + attr->attr.mode |= 0200; +} + static ssize_t show_dscr_default(struct device *dev, struct device_attribute *attr, char *buf) { @@ -394,8 +405,11 @@ static void register_cpu_online(unsigned int cpu) if (cpu_has_feature(CPU_FTR_MMCRA)) device_create_file(s, &dev_attr_mmcra); - if (cpu_has_feature(CPU_FTR_PURR)) + if (cpu_has_feature(CPU_FTR_PURR)) { + if (!firmware_has_feature(FW_FEATURE_LPAR)) + add_write_permission_dev_attr(&dev_attr_purr); device_create_file(s, &dev_attr_purr); + } if (cpu_has_feature(CPU_FTR_SPURR)) device_create_file(s, &dev_attr_spurr); diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index 7b60b98..cd809ea 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -79,6 +79,11 @@ _GLOBAL(tm_abort) TABORT(R3) blr + .section ".toc","aw" +DSCR_DEFAULT: + .tc dscr_default[TC],dscr_default + + .section ".text" /* void tm_reclaim(struct thread_struct *thread, * unsigned long orig_msr, @@ -123,6 +128,7 @@ _GLOBAL(tm_reclaim) mr r15, r14 ori r15, r15, MSR_FP li r16, MSR_RI + ori r16, r16, MSR_EE /* IRQs hard off */ andc r15, r15, r16 oris r15, r15, MSR_VEC@h #ifdef CONFIG_VSX @@ -187,11 +193,18 @@ dont_backup_fp: std r1, PACATMSCRATCH(r13) ld r1, PACAR1(r13) + /* Store the PPR in r11 and reset to decent value */ + std r11, GPR11(r1) /* Temporary stash */ + mfspr r11, SPRN_PPR + HMT_MEDIUM + /* Now get some more GPRS free */ std r7, GPR7(r1) /* Temporary stash */ std r12, GPR12(r1) /* '' '' '' */ ld r12, STACK_PARAM(0)(r1) /* Param 0, thread_struct * */ + std r11, THREAD_TM_PPR(r12) /* Store PPR and free r11 */ + addi r7, r12, PT_CKPT_REGS /* Thread's ckpt_regs */ /* Make r7 look like an exception frame so that we @@ -203,15 +216,19 @@ dont_backup_fp: SAVE_GPR(0, r7) /* user r0 */ SAVE_GPR(2, r7) /* user r2 */ SAVE_4GPRS(3, r7) /* user r3-r6 */ - SAVE_4GPRS(8, r7) /* user r8-r11 */ + SAVE_GPR(8, r7) /* user r8 */ + SAVE_GPR(9, r7) /* user r9 */ + SAVE_GPR(10, r7) /* user r10 */ ld r3, PACATMSCRATCH(r13) /* user r1 */ ld r4, GPR7(r1) /* user r7 */ - ld r5, GPR12(r1) /* user r12 */ - GET_SCRATCH0(6) /* user r13 */ + ld r5, GPR11(r1) /* user r11 */ + ld r6, GPR12(r1) /* user r12 */ + GET_SCRATCH0(8) /* user r13 */ std r3, GPR1(r7) std r4, GPR7(r7) - std r5, GPR12(r7) - std r6, GPR13(r7) + std r5, GPR11(r7) + std r6, GPR12(r7) + std r8, GPR13(r7) SAVE_NVGPRS(r7) /* user r14-r31 */ @@ -234,14 +251,12 @@ dont_backup_fp: std r6, _XER(r7) - /* ******************** TAR, PPR, DSCR ********** */ + /* ******************** TAR, DSCR ********** */ mfspr r3, SPRN_TAR - mfspr r4, SPRN_PPR - mfspr r5, SPRN_DSCR + mfspr r4, SPRN_DSCR std r3, THREAD_TM_TAR(r12) - std r4, THREAD_TM_PPR(r12) - std r5, THREAD_TM_DSCR(r12) + std r4, THREAD_TM_DSCR(r12) /* MSR and flags: We don't change CRs, and we don't need to alter * MSR. @@ -258,7 +273,7 @@ dont_backup_fp: std r3, THREAD_TM_TFHAR(r12) std r4, THREAD_TM_TFIAR(r12) - /* AMR and PPR are checkpointed too, but are unsupported by Linux. */ + /* AMR is checkpointed too, but is unsupported by Linux. */ /* Restore original MSR/IRQ state & clear TM mode */ ld r14, TM_FRAME_L0(r1) /* Orig MSR */ @@ -274,6 +289,12 @@ dont_backup_fp: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr @@ -358,25 +379,24 @@ dont_restore_fp: restore_gprs: - /* ******************** TAR, PPR, DSCR ********** */ - ld r4, THREAD_TM_TAR(r3) - ld r5, THREAD_TM_PPR(r3) - ld r6, THREAD_TM_DSCR(r3) + /* ******************** CR,LR,CCR,MSR ********** */ + ld r4, _CTR(r7) + ld r5, _LINK(r7) + ld r6, _CCR(r7) + ld r8, _XER(r7) - mtspr SPRN_TAR, r4 - mtspr SPRN_PPR, r5 - mtspr SPRN_DSCR, r6 + mtctr r4 + mtlr r5 + mtcr r6 + mtxer r8 - /* ******************** CR,LR,CCR,MSR ********** */ - ld r3, _CTR(r7) - ld r4, _LINK(r7) - ld r5, _CCR(r7) - ld r6, _XER(r7) + /* ******************** TAR ******************** */ + ld r4, THREAD_TM_TAR(r3) + mtspr SPRN_TAR, r4 - mtctr r3 - mtlr r4 - mtcr r5 - mtxer r6 + /* Load up the PPR and DSCR in GPRs only at this stage */ + ld r5, THREAD_TM_DSCR(r3) + ld r6, THREAD_TM_PPR(r3) /* Clear the MSR RI since we are about to change R1. EE is already off */ @@ -384,19 +404,26 @@ restore_gprs: mtmsrd r4, 1 REST_4GPRS(0, r7) /* GPR0-3 */ - REST_GPR(4, r7) /* GPR4-6 */ - REST_GPR(5, r7) - REST_GPR(6, r7) + REST_GPR(4, r7) /* GPR4 */ REST_4GPRS(8, r7) /* GPR8-11 */ REST_2GPRS(12, r7) /* GPR12-13 */ REST_NVGPRS(r7) /* GPR14-31 */ - ld r7, GPR7(r7) /* GPR7 */ + /* Load up PPR and DSCR here so we don't run with user values for long + */ + mtspr SPRN_DSCR, r5 + mtspr SPRN_PPR, r6 + + REST_GPR(5, r7) /* GPR5-7 */ + REST_GPR(6, r7) + ld r7, GPR7(r7) /* Commit register state as checkpointed state: */ TRECHKPT + HMT_MEDIUM + /* Our transactional state has now changed. * * Now just get out of here. Transactional (current) state will be @@ -419,6 +446,12 @@ restore_gprs: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr /* ****************************************************************** */ diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 78a3506..d38cc08 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, const char *cp; dn = dev->of_node; - if (!dn) - return -ENODEV; + if (!dn) { + strcat(buf, "\n"); + return strlen(buf); + } cp = of_get_property(dn, "compatible", NULL); - if (!cp) - return -ENODEV; + if (!cp) { + strcat(buf, "\n"); + return strlen(buf); + } return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp); } |