From d0b2f91bede3bd5e3d24dd6803e56eee959c1797 Mon Sep 17 00:00:00 2001 From: AndrĂ© Fabian Silva Delgado Date: Thu, 20 Oct 2016 00:10:27 -0300 Subject: Linux-libre 4.8.2-gnu --- arch/sparc/kernel/dtlb_prot.S | 4 ++-- arch/sparc/kernel/iommu.c | 12 ++++++------ arch/sparc/kernel/ioport.c | 24 ++++++++++++------------ arch/sparc/kernel/irq_32.c | 4 ++-- arch/sparc/kernel/irq_64.c | 2 +- arch/sparc/kernel/ktlb.S | 12 ++++++++++++ arch/sparc/kernel/pci.c | 20 +++++++++++--------- arch/sparc/kernel/pci_sun4v.c | 12 ++++++------ arch/sparc/kernel/setup_64.c | 26 ++++++++++++++++++++++++++ arch/sparc/kernel/smp_64.c | 14 ++++++++++++++ arch/sparc/kernel/tsb.S | 12 ++++++++++-- arch/sparc/kernel/vmlinux.lds.S | 7 +++++++ 12 files changed, 109 insertions(+), 40 deletions(-) (limited to 'arch/sparc/kernel') diff --git a/arch/sparc/kernel/dtlb_prot.S b/arch/sparc/kernel/dtlb_prot.S index d668ca149..4087a62f9 100644 --- a/arch/sparc/kernel/dtlb_prot.S +++ b/arch/sparc/kernel/dtlb_prot.S @@ -25,13 +25,13 @@ /* PROT ** ICACHE line 2: More real fault processing */ ldxa [%g4] ASI_DMMU, %g5 ! Put tagaccess in %g5 + srlx %g5, PAGE_SHIFT, %g5 + sllx %g5, PAGE_SHIFT, %g5 ! Clear context ID bits bgu,pn %xcc, winfix_trampoline ! Yes, perform winfixup mov FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4 ba,pt %xcc, sparc64_realfault_common ! Nope, normal fault nop nop - nop - nop /* PROT ** ICACHE line 3: Unused... */ nop diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 37686828c..5c615abff 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -196,7 +196,7 @@ static inline void iommu_free_ctx(struct iommu *iommu, int ctx) static void *dma_4u_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addrp, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long order, first_page; struct iommu *iommu; @@ -245,7 +245,7 @@ static void *dma_4u_alloc_coherent(struct device *dev, size_t size, static void dma_4u_free_coherent(struct device *dev, size_t size, void *cpu, dma_addr_t dvma, - struct dma_attrs *attrs) + unsigned long attrs) { struct iommu *iommu; unsigned long order, npages; @@ -263,7 +263,7 @@ static void dma_4u_free_coherent(struct device *dev, size_t size, static dma_addr_t dma_4u_map_page(struct device *dev, struct page *page, unsigned long offset, size_t sz, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct iommu *iommu; struct strbuf *strbuf; @@ -385,7 +385,7 @@ do_flush_sync: static void dma_4u_unmap_page(struct device *dev, dma_addr_t bus_addr, size_t sz, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct iommu *iommu; struct strbuf *strbuf; @@ -431,7 +431,7 @@ static void dma_4u_unmap_page(struct device *dev, dma_addr_t bus_addr, static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct scatterlist *s, *outs, *segstart; unsigned long flags, handle, prot, ctx; @@ -607,7 +607,7 @@ static unsigned long fetch_sg_ctx(struct iommu *iommu, struct scatterlist *sg) static void dma_4u_unmap_sg(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long flags, ctx; struct scatterlist *sg; diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index ffd5ff467..234410341 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -260,7 +260,7 @@ EXPORT_SYMBOL(sbus_set_sbus64); */ static void *sbus_alloc_coherent(struct device *dev, size_t len, dma_addr_t *dma_addrp, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { struct platform_device *op = to_platform_device(dev); unsigned long len_total = PAGE_ALIGN(len); @@ -315,7 +315,7 @@ err_nopages: } static void sbus_free_coherent(struct device *dev, size_t n, void *p, - dma_addr_t ba, struct dma_attrs *attrs) + dma_addr_t ba, unsigned long attrs) { struct resource *res; struct page *pgv; @@ -355,7 +355,7 @@ static void sbus_free_coherent(struct device *dev, size_t n, void *p, static dma_addr_t sbus_map_page(struct device *dev, struct page *page, unsigned long offset, size_t len, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { void *va = page_address(page) + offset; @@ -371,20 +371,20 @@ static dma_addr_t sbus_map_page(struct device *dev, struct page *page, } static void sbus_unmap_page(struct device *dev, dma_addr_t ba, size_t n, - enum dma_data_direction dir, struct dma_attrs *attrs) + enum dma_data_direction dir, unsigned long attrs) { mmu_release_scsi_one(dev, ba, n); } static int sbus_map_sg(struct device *dev, struct scatterlist *sg, int n, - enum dma_data_direction dir, struct dma_attrs *attrs) + enum dma_data_direction dir, unsigned long attrs) { mmu_get_scsi_sgl(dev, sg, n); return n; } static void sbus_unmap_sg(struct device *dev, struct scatterlist *sg, int n, - enum dma_data_direction dir, struct dma_attrs *attrs) + enum dma_data_direction dir, unsigned long attrs) { mmu_release_scsi_sgl(dev, sg, n); } @@ -429,7 +429,7 @@ arch_initcall(sparc_register_ioport); */ static void *pci32_alloc_coherent(struct device *dev, size_t len, dma_addr_t *pba, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long len_total = PAGE_ALIGN(len); void *va; @@ -482,7 +482,7 @@ err_nopages: * past this call are illegal. */ static void pci32_free_coherent(struct device *dev, size_t n, void *p, - dma_addr_t ba, struct dma_attrs *attrs) + dma_addr_t ba, unsigned long attrs) { struct resource *res; @@ -518,14 +518,14 @@ static void pci32_free_coherent(struct device *dev, size_t n, void *p, static dma_addr_t pci32_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { /* IIep is write-through, not flushing. */ return page_to_phys(page) + offset; } static void pci32_unmap_page(struct device *dev, dma_addr_t ba, size_t size, - enum dma_data_direction dir, struct dma_attrs *attrs) + enum dma_data_direction dir, unsigned long attrs) { if (dir != PCI_DMA_TODEVICE) dma_make_coherent(ba, PAGE_ALIGN(size)); @@ -548,7 +548,7 @@ static void pci32_unmap_page(struct device *dev, dma_addr_t ba, size_t size, */ static int pci32_map_sg(struct device *device, struct scatterlist *sgl, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { struct scatterlist *sg; int n; @@ -567,7 +567,7 @@ static int pci32_map_sg(struct device *device, struct scatterlist *sgl, */ static void pci32_unmap_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { struct scatterlist *sg; int n; diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c index a979e99f8..cac4a5554 100644 --- a/arch/sparc/kernel/irq_32.c +++ b/arch/sparc/kernel/irq_32.c @@ -165,7 +165,7 @@ void irq_link(unsigned int irq) p = &irq_table[irq]; pil = p->pil; - BUG_ON(pil > SUN4D_MAX_IRQ); + BUG_ON(pil >= SUN4D_MAX_IRQ); p->next = irq_map[pil]; irq_map[pil] = p; @@ -182,7 +182,7 @@ void irq_unlink(unsigned int irq) spin_lock_irqsave(&irq_map_lock, flags); p = &irq_table[irq]; - BUG_ON(p->pil > SUN4D_MAX_IRQ); + BUG_ON(p->pil >= SUN4D_MAX_IRQ); pnext = &irq_map[p->pil]; while (*pnext != p) pnext = &(*pnext)->next; diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c index e22416ce5..34a7930b7 100644 --- a/arch/sparc/kernel/irq_64.c +++ b/arch/sparc/kernel/irq_64.c @@ -242,7 +242,7 @@ unsigned int irq_alloc(unsigned int dev_handle, unsigned int dev_ino) { int irq; - irq = __irq_alloc_descs(-1, 1, 1, numa_node_id(), NULL); + irq = __irq_alloc_descs(-1, 1, 1, numa_node_id(), NULL, NULL); if (irq <= 0) goto out; diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S index ef0d8e9e1..f22bec0db 100644 --- a/arch/sparc/kernel/ktlb.S +++ b/arch/sparc/kernel/ktlb.S @@ -20,6 +20,10 @@ kvmap_itlb: mov TLB_TAG_ACCESS, %g4 ldxa [%g4] ASI_IMMU, %g4 + /* The kernel executes in context zero, therefore we do not + * need to clear the context ID bits out of %g4 here. + */ + /* sun4v_itlb_miss branches here with the missing virtual * address already loaded into %g4 */ @@ -128,6 +132,10 @@ kvmap_dtlb: mov TLB_TAG_ACCESS, %g4 ldxa [%g4] ASI_DMMU, %g4 + /* The kernel executes in context zero, therefore we do not + * need to clear the context ID bits out of %g4 here. + */ + /* sun4v_dtlb_miss branches here with the missing virtual * address already loaded into %g4 */ @@ -251,6 +259,10 @@ kvmap_dtlb_longpath: nop .previous + /* The kernel executes in context zero, therefore we do not + * need to clear the context ID bits out of %g5 here. + */ + be,pt %xcc, sparc64_realfault_common mov FAULT_CODE_DTLB, %g4 ba,pt %xcc, winfix_trampoline diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index c2b202d76..9c1878f4f 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -986,16 +986,18 @@ void pci_resource_to_user(const struct pci_dev *pdev, int bar, const struct resource *rp, resource_size_t *start, resource_size_t *end) { - struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller; - unsigned long offset; - - if (rp->flags & IORESOURCE_IO) - offset = pbm->io_space.start; - else - offset = pbm->mem_space.start; + struct pci_bus_region region; - *start = rp->start - offset; - *end = rp->end - offset; + /* + * "User" addresses are shown in /sys/devices/pci.../.../resource + * and /proc/bus/pci/devices and used as mmap offsets for + * /proc/bus/pci/BB/DD.F files (see proc_bus_pci_mmap()). + * + * On sparc, these are PCI bus addresses, i.e., raw BAR values. + */ + pcibios_resource_to_bus(pdev->bus, ®ion, (struct resource *) rp); + *start = region.start; + *end = region.end; } void pcibios_set_master(struct pci_dev *dev) diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 836e8cef4..61c6f935a 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -130,7 +130,7 @@ static inline long iommu_batch_end(void) static void *dma_4v_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addrp, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long flags, order, first_page, npages, n; struct iommu *iommu; @@ -213,7 +213,7 @@ static void dma_4v_iommu_demap(void *demap_arg, unsigned long entry, } static void dma_4v_free_coherent(struct device *dev, size_t size, void *cpu, - dma_addr_t dvma, struct dma_attrs *attrs) + dma_addr_t dvma, unsigned long attrs) { struct pci_pbm_info *pbm; struct iommu *iommu; @@ -235,7 +235,7 @@ static void dma_4v_free_coherent(struct device *dev, size_t size, void *cpu, static dma_addr_t dma_4v_map_page(struct device *dev, struct page *page, unsigned long offset, size_t sz, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct iommu *iommu; unsigned long flags, npages, oaddr; @@ -294,7 +294,7 @@ iommu_map_fail: static void dma_4v_unmap_page(struct device *dev, dma_addr_t bus_addr, size_t sz, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_pbm_info *pbm; struct iommu *iommu; @@ -322,7 +322,7 @@ static void dma_4v_unmap_page(struct device *dev, dma_addr_t bus_addr, static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct scatterlist *s, *outs, *segstart; unsigned long flags, handle, prot; @@ -466,7 +466,7 @@ iommu_map_failed: static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_pbm_info *pbm; struct scatterlist *sg; diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 599f1207e..6b7331d19 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -50,6 +51,8 @@ #include #include #include +#include +#include #ifdef CONFIG_IP_PNP #include @@ -590,6 +593,22 @@ static void __init init_sparc64_elf_hwcap(void) pause_patch(); } +void __init alloc_irqstack_bootmem(void) +{ + unsigned int i, node; + + for_each_possible_cpu(i) { + node = cpu_to_node(i); + + softirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), + THREAD_SIZE, + THREAD_SIZE, 0); + hardirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), + THREAD_SIZE, + THREAD_SIZE, 0); + } +} + void __init setup_arch(char **cmdline_p) { /* Initialize PROM console and command line. */ @@ -650,6 +669,13 @@ void __init setup_arch(char **cmdline_p) paging_init(); init_sparc64_elf_hwcap(); + smp_fill_in_cpu_possible_map(); + /* + * Once the OF device tree and MDESC have been setup and nr_cpus has + * been parsed, we know the list of possible cpus. Therefore we can + * allocate the IRQ stacks. + */ + alloc_irqstack_bootmem(); } extern int stop_a_enabled; diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 8a6151a62..d3035ba6c 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1227,6 +1227,20 @@ void __init smp_setup_processor_id(void) xcall_deliver_impl = hypervisor_xcall_deliver; } +void __init smp_fill_in_cpu_possible_map(void) +{ + int possible_cpus = num_possible_cpus(); + int i; + + if (possible_cpus > nr_cpu_ids) + possible_cpus = nr_cpu_ids; + + for (i = 0; i < possible_cpus; i++) + set_cpu_possible(i, true); + for (; i < NR_CPUS; i++) + set_cpu_possible(i, false); +} + void smp_fill_in_sib_core_maps(void) { unsigned int i; diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S index be98685c1..d568c8207 100644 --- a/arch/sparc/kernel/tsb.S +++ b/arch/sparc/kernel/tsb.S @@ -29,13 +29,17 @@ */ tsb_miss_dtlb: mov TLB_TAG_ACCESS, %g4 + ldxa [%g4] ASI_DMMU, %g4 + srlx %g4, PAGE_SHIFT, %g4 ba,pt %xcc, tsb_miss_page_table_walk - ldxa [%g4] ASI_DMMU, %g4 + sllx %g4, PAGE_SHIFT, %g4 tsb_miss_itlb: mov TLB_TAG_ACCESS, %g4 + ldxa [%g4] ASI_IMMU, %g4 + srlx %g4, PAGE_SHIFT, %g4 ba,pt %xcc, tsb_miss_page_table_walk - ldxa [%g4] ASI_IMMU, %g4 + sllx %g4, PAGE_SHIFT, %g4 /* At this point we have: * %g1 -- PAGE_SIZE TSB entry address @@ -284,6 +288,10 @@ tsb_do_dtlb_fault: nop .previous + /* Clear context ID bits. */ + srlx %g5, PAGE_SHIFT, %g5 + sllx %g5, PAGE_SHIFT, %g5 + be,pt %xcc, sparc64_realfault_common mov FAULT_CODE_DTLB, %g4 ba,pt %xcc, winfix_trampoline diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 7d02b1fef..d79b3b734 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -150,6 +150,13 @@ SECTIONS } PERCPU_SECTION(SMP_CACHE_BYTES) +#ifdef CONFIG_JUMP_LABEL + . = ALIGN(PAGE_SIZE); + .exit.text : { + EXIT_TEXT + } +#endif + . = ALIGN(PAGE_SIZE); __init_end = .; BSS_SECTION(0, 0, 0) -- cgit v1.2.3-54-g00ecf