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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 14:26:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 14:26:14 -0800
commite29116758c4e06be9ba6358350f9d9f466414efb (patch)
tree6591c7a09afcf7857467b20a3999d582715230c9 /arch/parisc
parente71d5126e77c68b7ed1fad275fdc8825e9597448 (diff)
parent7b8b098c47bcf1986a6d7ecac9f44741fcae7d8c (diff)
downloadlinux-e29116758c4e06be9ba6358350f9d9f466414efb.tar.bz2
Merge branch 'parisc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller: "Highlights: - one important fix from Dave to prevent kernel crash when userspace hands over invalid values to our in-kernel CAS implementation. - added CPU topology support, including multi-core scheduler support on PA8900 CPUs Minor changes: - minor fixes for sparse (from Luc) - drop duplicates for CPU_BIG_ENDIAN from parisc and sparc top Kconfig files (from Babu) - reorganized parisc PDC (firmware-access) header files for usage from userspace. Required for upcoming qemu parisc emulator and SeaBIOS fork to support parisc" * 'parisc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: arch: Fix duplicates in Kconfig for parisc and sparc parisc: Make some PDC structures accessible in uapi headers parisc: Pass endianness info to sparse parisc: Add CPU topology support parisc: Fix validity check of pointer size argument in new CAS implementation
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/Kconfig19
-rw-r--r--arch/parisc/Makefile2
-rw-r--r--arch/parisc/include/asm/pdc.h255
-rw-r--r--arch/parisc/include/asm/topology.h36
-rw-r--r--arch/parisc/include/uapi/asm/pdc.h256
-rw-r--r--arch/parisc/kernel/Makefile4
-rw-r--r--arch/parisc/kernel/processor.c13
-rw-r--r--arch/parisc/kernel/setup.c2
-rw-r--r--arch/parisc/kernel/syscall.S6
-rw-r--r--arch/parisc/kernel/topology.c153
10 files changed, 452 insertions, 294 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 1fd3eb5b66c6..9792d8cf4f56 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -32,6 +32,7 @@ config PARISC
select GENERIC_PCI_IOMAP
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
+ select GENERIC_CPU_DEVICES
select GENERIC_STRNCPY_FROM_USER
select SYSCTL_ARCH_UNALIGN_ALLOW
select SYSCTL_EXCEPTION_TRACE
@@ -60,9 +61,6 @@ config PARISC
config CPU_BIG_ENDIAN
def_bool y
-config CPU_BIG_ENDIAN
- def_bool y
-
config MMU
def_bool y
@@ -288,6 +286,21 @@ config SMP
If you don't know what to do here, say N.
+config PARISC_CPU_TOPOLOGY
+ bool "Support cpu topology definition"
+ depends on SMP
+ default y
+ help
+ Support PARISC cpu topology definition.
+
+config SCHED_MC
+ bool "Multi-core scheduler support"
+ depends on PARISC_CPU_TOPOLOGY && PA8X00
+ help
+ Multi-core scheduler support improves the CPU scheduler's decision
+ making when dealing with multi-core CPU chips at a cost of slightly
+ increased overhead in some places. If unsure say N here.
+
config IRQSTACKS
bool "Use separate kernel stacks when processing interrupts"
default y
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 01946ebaff72..e2364ff59180 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -22,7 +22,7 @@ KBUILD_IMAGE := vmlinuz
KBUILD_DEFCONFIG := default_defconfig
NM = sh $(srctree)/arch/parisc/nm
-CHECKFLAGS += -D__hppa__=1
+CHECKFLAGS += -D__hppa__=1 -mbig-endian
LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
export LIBGCC
diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h
index efee44a5e063..339e83ddb39e 100644
--- a/arch/parisc/include/asm/pdc.h
+++ b/arch/parisc/include/asm/pdc.h
@@ -18,261 +18,6 @@ extern unsigned long parisc_cell_loc; /* cell location of CPU (PAT) */
#define PDC_TYPE_SYSTEM_MAP 1 /* 32-bit, but supports PDC_SYSTEM_MAP */
#define PDC_TYPE_SNAKE 2 /* Doesn't support SYSTEM_MAP */
-struct pdc_chassis_info { /* for PDC_CHASSIS_INFO */
- unsigned long actcnt; /* actual number of bytes returned */
- unsigned long maxcnt; /* maximum number of bytes that could be returned */
-};
-
-struct pdc_coproc_cfg { /* for PDC_COPROC_CFG */
- unsigned long ccr_functional;
- unsigned long ccr_present;
- unsigned long revision;
- unsigned long model;
-};
-
-struct pdc_model { /* for PDC_MODEL */
- unsigned long hversion;
- unsigned long sversion;
- unsigned long hw_id;
- unsigned long boot_id;
- unsigned long sw_id;
- unsigned long sw_cap;
- unsigned long arch_rev;
- unsigned long pot_key;
- unsigned long curr_key;
-};
-
-struct pdc_cache_cf { /* for PDC_CACHE (I/D-caches) */
- unsigned long
-#ifdef CONFIG_64BIT
- cc_padW:32,
-#endif
- cc_alias: 4, /* alias boundaries for virtual addresses */
- cc_block: 4, /* to determine most efficient stride */
- cc_line : 3, /* maximum amount written back as a result of store (multiple of 16 bytes) */
- cc_shift: 2, /* how much to shift cc_block left */
- cc_wt : 1, /* 0 = WT-Dcache, 1 = WB-Dcache */
- cc_sh : 2, /* 0 = separate I/D-cache, else shared I/D-cache */
- cc_cst : 3, /* 0 = incoherent D-cache, 1=coherent D-cache */
- cc_pad1 : 10, /* reserved */
- cc_hv : 3; /* hversion dependent */
-};
-
-struct pdc_tlb_cf { /* for PDC_CACHE (I/D-TLB's) */
- unsigned long tc_pad0:12, /* reserved */
-#ifdef CONFIG_64BIT
- tc_padW:32,
-#endif
- tc_sh : 2, /* 0 = separate I/D-TLB, else shared I/D-TLB */
- tc_hv : 1, /* HV */
- tc_page : 1, /* 0 = 2K page-size-machine, 1 = 4k page size */
- tc_cst : 3, /* 0 = incoherent operations, else coherent operations */
- tc_aid : 5, /* ITLB: width of access ids of processor (encoded!) */
- tc_sr : 8; /* ITLB: width of space-registers (encoded) */
-};
-
-struct pdc_cache_info { /* main-PDC_CACHE-structure (caches & TLB's) */
- /* I-cache */
- unsigned long ic_size; /* size in bytes */
- struct pdc_cache_cf ic_conf; /* configuration */
- unsigned long ic_base; /* base-addr */
- unsigned long ic_stride;
- unsigned long ic_count;
- unsigned long ic_loop;
- /* D-cache */
- unsigned long dc_size; /* size in bytes */
- struct pdc_cache_cf dc_conf; /* configuration */
- unsigned long dc_base; /* base-addr */
- unsigned long dc_stride;
- unsigned long dc_count;
- unsigned long dc_loop;
- /* Instruction-TLB */
- unsigned long it_size; /* number of entries in I-TLB */
- struct pdc_tlb_cf it_conf; /* I-TLB-configuration */
- unsigned long it_sp_base;
- unsigned long it_sp_stride;
- unsigned long it_sp_count;
- unsigned long it_off_base;
- unsigned long it_off_stride;
- unsigned long it_off_count;
- unsigned long it_loop;
- /* data-TLB */
- unsigned long dt_size; /* number of entries in D-TLB */
- struct pdc_tlb_cf dt_conf; /* D-TLB-configuration */
- unsigned long dt_sp_base;
- unsigned long dt_sp_stride;
- unsigned long dt_sp_count;
- unsigned long dt_off_base;
- unsigned long dt_off_stride;
- unsigned long dt_off_count;
- unsigned long dt_loop;
-};
-
-#if 0
-/* If you start using the next struct, you'll have to adjust it to
- * work with 64-bit firmware I think -PB
- */
-struct pdc_iodc { /* PDC_IODC */
- unsigned char hversion_model;
- unsigned char hversion;
- unsigned char spa;
- unsigned char type;
- unsigned int sversion_rev:4;
- unsigned int sversion_model:19;
- unsigned int sversion_opt:8;
- unsigned char rev;
- unsigned char dep;
- unsigned char features;
- unsigned char pad1;
- unsigned int checksum:16;
- unsigned int length:16;
- unsigned int pad[15];
-} __attribute__((aligned(8))) ;
-#endif
-
-#ifndef CONFIG_PA20
-/* no BLTBs in pa2.0 processors */
-struct pdc_btlb_info_range {
- __u8 res00;
- __u8 num_i;
- __u8 num_d;
- __u8 num_comb;
-};
-
-struct pdc_btlb_info { /* PDC_BLOCK_TLB, return of PDC_BTLB_INFO */
- unsigned int min_size; /* minimum size of BTLB in pages */
- unsigned int max_size; /* maximum size of BTLB in pages */
- struct pdc_btlb_info_range fixed_range_info;
- struct pdc_btlb_info_range variable_range_info;
-};
-
-#endif /* !CONFIG_PA20 */
-
-struct pdc_mem_retinfo { /* PDC_MEM/PDC_MEM_MEMINFO (return info) */
- unsigned long pdt_size;
- unsigned long pdt_entries;
- unsigned long pdt_status;
- unsigned long first_dbe_loc;
- unsigned long good_mem;
-};
-
-struct pdc_mem_read_pdt { /* PDC_MEM/PDC_MEM_READ_PDT (return info) */
- unsigned long pdt_entries;
-};
-
-#ifdef CONFIG_64BIT
-struct pdc_memory_table_raddr { /* PDC_MEM/PDC_MEM_TABLE (return info) */
- unsigned long entries_returned;
- unsigned long entries_total;
-};
-
-struct pdc_memory_table { /* PDC_MEM/PDC_MEM_TABLE (arguments) */
- unsigned long paddr;
- unsigned int pages;
- unsigned int reserved;
-};
-#endif /* CONFIG_64BIT */
-
-struct pdc_system_map_mod_info { /* PDC_SYSTEM_MAP/FIND_MODULE */
- unsigned long mod_addr;
- unsigned long mod_pgs;
- unsigned long add_addrs;
-};
-
-struct pdc_system_map_addr_info { /* PDC_SYSTEM_MAP/FIND_ADDRESS */
- unsigned long mod_addr;
- unsigned long mod_pgs;
-};
-
-struct pdc_initiator { /* PDC_INITIATOR */
- int host_id;
- int factor;
- int width;
- int mode;
-};
-
-struct hardware_path {
- char flags; /* see bit definitions below */
- char bc[6]; /* Bus Converter routing info to a specific */
- /* I/O adaptor (< 0 means none, > 63 resvd) */
- char mod; /* fixed field of specified module */
-};
-
-/*
- * Device path specifications used by PDC.
- */
-struct pdc_module_path {
- struct hardware_path path;
- unsigned int layers[6]; /* device-specific info (ctlr #, unit # ...) */
-};
-
-#ifndef CONFIG_PA20
-/* Only used on some pre-PA2.0 boxes */
-struct pdc_memory_map { /* PDC_MEMORY_MAP */
- unsigned long hpa; /* mod's register set address */
- unsigned long more_pgs; /* number of additional I/O pgs */
-};
-#endif
-
-struct pdc_tod {
- unsigned long tod_sec;
- unsigned long tod_usec;
-};
-
-/* architected results from PDC_PIM/transfer hpmc on a PA1.1 machine */
-
-struct pdc_hpmc_pim_11 { /* PDC_PIM */
- __u32 gr[32];
- __u32 cr[32];
- __u32 sr[8];
- __u32 iasq_back;
- __u32 iaoq_back;
- __u32 check_type;
- __u32 cpu_state;
- __u32 rsvd1;
- __u32 cache_check;
- __u32 tlb_check;
- __u32 bus_check;
- __u32 assists_check;
- __u32 rsvd2;
- __u32 assist_state;
- __u32 responder_addr;
- __u32 requestor_addr;
- __u32 path_info;
- __u64 fr[32];
-};
-
-/*
- * architected results from PDC_PIM/transfer hpmc on a PA2.0 machine
- *
- * Note that PDC_PIM doesn't care whether or not wide mode was enabled
- * so the results are different on PA1.1 vs. PA2.0 when in narrow mode.
- *
- * Note also that there are unarchitected results available, which
- * are hversion dependent. Do a "ser pim 0 hpmc" after rebooting, since
- * the firmware is probably the best way of printing hversion dependent
- * data.
- */
-
-struct pdc_hpmc_pim_20 { /* PDC_PIM */
- __u64 gr[32];
- __u64 cr[32];
- __u64 sr[8];
- __u64 iasq_back;
- __u64 iaoq_back;
- __u32 check_type;
- __u32 cpu_state;
- __u32 cache_check;
- __u32 tlb_check;
- __u32 bus_check;
- __u32 assists_check;
- __u32 assist_state;
- __u32 path_info;
- __u64 responder_addr;
- __u64 requestor_addr;
- __u64 fr[32];
-};
-
void pdc_console_init(void); /* in pdc_console.c */
void pdc_console_restart(void);
diff --git a/arch/parisc/include/asm/topology.h b/arch/parisc/include/asm/topology.h
new file mode 100644
index 000000000000..6f0750c74e47
--- /dev/null
+++ b/arch/parisc/include/asm/topology.h
@@ -0,0 +1,36 @@
+#ifndef _ASM_PARISC_TOPOLOGY_H
+#define _ASM_PARISC_TOPOLOGY_H
+
+#ifdef CONFIG_PARISC_CPU_TOPOLOGY
+
+#include <linux/cpumask.h>
+
+struct cputopo_parisc {
+ int thread_id;
+ int core_id;
+ int socket_id;
+ cpumask_t thread_sibling;
+ cpumask_t core_sibling;
+};
+
+extern struct cputopo_parisc cpu_topology[NR_CPUS];
+
+#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
+#define topology_core_id(cpu) (cpu_topology[cpu].core_id)
+#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
+#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
+
+void init_cpu_topology(void);
+void store_cpu_topology(unsigned int cpuid);
+const struct cpumask *cpu_coregroup_mask(int cpu);
+
+#else
+
+static inline void init_cpu_topology(void) { }
+static inline void store_cpu_topology(unsigned int cpuid) { }
+
+#endif
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_ARM_TOPOLOGY_H */
diff --git a/arch/parisc/include/uapi/asm/pdc.h b/arch/parisc/include/uapi/asm/pdc.h
index 0ad117617f1a..593eeb573138 100644
--- a/arch/parisc/include/uapi/asm/pdc.h
+++ b/arch/parisc/include/uapi/asm/pdc.h
@@ -16,6 +16,7 @@
#define PDC_ERROR -3 /* Call could not complete without an error */
#define PDC_NE_MOD -5 /* Module not found */
#define PDC_NE_CELL_MOD -7 /* Cell module not found */
+#define PDC_NE_BOOTDEV -9 /* Cannot locate a console device or boot device */
#define PDC_INVALID_ARG -10 /* Called with an invalid argument */
#define PDC_BUS_POW_WARN -12 /* Call could not complete in allowed power budget */
#define PDC_NOT_NARROW -17 /* Narrow mode not supported */
@@ -340,9 +341,6 @@
#if !defined(__ASSEMBLY__)
-#include <linux/types.h>
-
-
/* flags of the device_path */
#define PF_AUTOBOOT 0x80
#define PF_AUTOSEARCH 0x40
@@ -418,9 +416,255 @@ struct zeropage {
int pad430[116];
/* [0x600] processor dependent */
- __u32 pad600[1];
- __u32 proc_sti; /* pointer to STI ROM */
- __u32 pad608[126];
+ unsigned int pad600[1];
+ unsigned int proc_sti; /* pointer to STI ROM */
+ unsigned int pad608[126];
+};
+
+struct pdc_chassis_info { /* for PDC_CHASSIS_INFO */
+ unsigned long actcnt; /* actual number of bytes returned */
+ unsigned long maxcnt; /* maximum number of bytes that could be returned */
+};
+
+struct pdc_coproc_cfg { /* for PDC_COPROC_CFG */
+ unsigned long ccr_functional;
+ unsigned long ccr_present;
+ unsigned long revision;
+ unsigned long model;
+};
+
+struct pdc_model { /* for PDC_MODEL */
+ unsigned long hversion;
+ unsigned long sversion;
+ unsigned long hw_id;
+ unsigned long boot_id;
+ unsigned long sw_id;
+ unsigned long sw_cap;
+ unsigned long arch_rev;
+ unsigned long pot_key;
+ unsigned long curr_key;
+};
+
+struct pdc_cache_cf { /* for PDC_CACHE (I/D-caches) */
+ unsigned long
+#ifdef __LP64__
+ cc_padW:32,
+#endif
+ cc_alias: 4, /* alias boundaries for virtual addresses */
+ cc_block: 4, /* to determine most efficient stride */
+ cc_line : 3, /* maximum amount written back as a result of store (multiple of 16 bytes) */
+ cc_shift: 2, /* how much to shift cc_block left */
+ cc_wt : 1, /* 0 = WT-Dcache, 1 = WB-Dcache */
+ cc_sh : 2, /* 0 = separate I/D-cache, else shared I/D-cache */
+ cc_cst : 3, /* 0 = incoherent D-cache, 1=coherent D-cache */
+ cc_pad1 : 10, /* reserved */
+ cc_hv : 3; /* hversion dependent */
+};
+
+struct pdc_tlb_cf { /* for PDC_CACHE (I/D-TLB's) */
+ unsigned long tc_pad0:12, /* reserved */
+#ifdef __LP64__
+ tc_padW:32,
+#endif
+ tc_sh : 2, /* 0 = separate I/D-TLB, else shared I/D-TLB */
+ tc_hv : 1, /* HV */
+ tc_page : 1, /* 0 = 2K page-size-machine, 1 = 4k page size */
+ tc_cst : 3, /* 0 = incoherent operations, else coherent operations */
+ tc_aid : 5, /* ITLB: width of access ids of processor (encoded!) */
+ tc_sr : 8; /* ITLB: width of space-registers (encoded) */
+};
+
+struct pdc_cache_info { /* main-PDC_CACHE-structure (caches & TLB's) */
+ /* I-cache */
+ unsigned long ic_size; /* size in bytes */
+ struct pdc_cache_cf ic_conf; /* configuration */
+ unsigned long ic_base; /* base-addr */
+ unsigned long ic_stride;
+ unsigned long ic_count;
+ unsigned long ic_loop;
+ /* D-cache */
+ unsigned long dc_size; /* size in bytes */
+ struct pdc_cache_cf dc_conf; /* configuration */
+ unsigned long dc_base; /* base-addr */
+ unsigned long dc_stride;
+ unsigned long dc_count;
+ unsigned long dc_loop;
+ /* Instruction-TLB */
+ unsigned long it_size; /* number of entries in I-TLB */
+ struct pdc_tlb_cf it_conf; /* I-TLB-configuration */
+ unsigned long it_sp_base;
+ unsigned long it_sp_stride;
+ unsigned long it_sp_count;
+ unsigned long it_off_base;
+ unsigned long it_off_stride;
+ unsigned long it_off_count;
+ unsigned long it_loop;
+ /* data-TLB */
+ unsigned long dt_size; /* number of entries in D-TLB */
+ struct pdc_tlb_cf dt_conf; /* D-TLB-configuration */
+ unsigned long dt_sp_base;
+ unsigned long dt_sp_stride;
+ unsigned long dt_sp_count;
+ unsigned long dt_off_base;
+ unsigned long dt_off_stride;
+ unsigned long dt_off_count;
+ unsigned long dt_loop;
+};
+
+/* Might need adjustment to work with 64-bit firmware */
+struct pdc_iodc { /* PDC_IODC */
+ unsigned char hversion_model;
+ unsigned char hversion;
+ unsigned char spa;
+ unsigned char type;
+ unsigned int sversion_rev:4;
+ unsigned int sversion_model:19;
+ unsigned int sversion_opt:8;
+ unsigned char rev;
+ unsigned char dep;
+ unsigned char features;
+ unsigned char pad1;
+ unsigned int checksum:16;
+ unsigned int length:16;
+ unsigned int pad[15];
+} __attribute__((aligned(8))) ;
+
+/* no BLTBs in pa2.0 processors */
+struct pdc_btlb_info_range {
+ unsigned char res00;
+ unsigned char num_i;
+ unsigned char num_d;
+ unsigned char num_comb;
+};
+
+struct pdc_btlb_info { /* PDC_BLOCK_TLB, return of PDC_BTLB_INFO */
+ unsigned int min_size; /* minimum size of BTLB in pages */
+ unsigned int max_size; /* maximum size of BTLB in pages */
+ struct pdc_btlb_info_range fixed_range_info;
+ struct pdc_btlb_info_range variable_range_info;
+};
+
+struct pdc_mem_retinfo { /* PDC_MEM/PDC_MEM_MEMINFO (return info) */
+ unsigned long pdt_size;
+ unsigned long pdt_entries;
+ unsigned long pdt_status;
+ unsigned long first_dbe_loc;
+ unsigned long good_mem;
+};
+
+struct pdc_mem_read_pdt { /* PDC_MEM/PDC_MEM_READ_PDT (return info) */
+ unsigned long pdt_entries;
+};
+
+#ifdef __LP64__
+struct pdc_memory_table_raddr { /* PDC_MEM/PDC_MEM_TABLE (return info) */
+ unsigned long entries_returned;
+ unsigned long entries_total;
+};
+
+struct pdc_memory_table { /* PDC_MEM/PDC_MEM_TABLE (arguments) */
+ unsigned long paddr;
+ unsigned int pages;
+ unsigned int reserved;
+};
+#endif /* __LP64__ */
+
+struct pdc_system_map_mod_info { /* PDC_SYSTEM_MAP/FIND_MODULE */
+ unsigned long mod_addr;
+ unsigned long mod_pgs;
+ unsigned long add_addrs;
+};
+
+struct pdc_system_map_addr_info { /* PDC_SYSTEM_MAP/FIND_ADDRESS */
+ unsigned long mod_addr;
+ unsigned long mod_pgs;
+};
+
+struct pdc_initiator { /* PDC_INITIATOR */
+ int host_id;
+ int factor;
+ int width;
+ int mode;
+};
+
+struct hardware_path {
+ char flags; /* see bit definitions below */
+ char bc[6]; /* Bus Converter routing info to a specific */
+ /* I/O adaptor (< 0 means none, > 63 resvd) */
+ char mod; /* fixed field of specified module */
+};
+
+/*
+ * Device path specifications used by PDC.
+ */
+struct pdc_module_path {
+ struct hardware_path path;
+ unsigned int layers[6]; /* device-specific info (ctlr #, unit # ...) */
+};
+
+/* Only used on some pre-PA2.0 boxes */
+struct pdc_memory_map { /* PDC_MEMORY_MAP */
+ unsigned long hpa; /* mod's register set address */
+ unsigned long more_pgs; /* number of additional I/O pgs */
+};
+
+struct pdc_tod {
+ unsigned long tod_sec;
+ unsigned long tod_usec;
+};
+
+/* architected results from PDC_PIM/transfer hpmc on a PA1.1 machine */
+
+struct pdc_hpmc_pim_11 { /* PDC_PIM */
+ unsigned int gr[32];
+ unsigned int cr[32];
+ unsigned int sr[8];
+ unsigned int iasq_back;
+ unsigned int iaoq_back;
+ unsigned int check_type;
+ unsigned int cpu_state;
+ unsigned int rsvd1;
+ unsigned int cache_check;
+ unsigned int tlb_check;
+ unsigned int bus_check;
+ unsigned int assists_check;
+ unsigned int rsvd2;
+ unsigned int assist_state;
+ unsigned int responder_addr;
+ unsigned int requestor_addr;
+ unsigned int path_info;
+ unsigned long long fr[32];
+};
+
+/*
+ * architected results from PDC_PIM/transfer hpmc on a PA2.0 machine
+ *
+ * Note that PDC_PIM doesn't care whether or not wide mode was enabled
+ * so the results are different on PA1.1 vs. PA2.0 when in narrow mode.
+ *
+ * Note also that there are unarchitected results available, which
+ * are hversion dependent. Do a "ser pim 0 hpmc" after rebooting, since
+ * the firmware is probably the best way of printing hversion dependent
+ * data.
+ */
+
+struct pdc_hpmc_pim_20 { /* PDC_PIM */
+ unsigned long long gr[32];
+ unsigned long long cr[32];
+ unsigned long long sr[8];
+ unsigned long long iasq_back;
+ unsigned long long iaoq_back;
+ unsigned int check_type;
+ unsigned int cpu_state;
+ unsigned int cache_check;
+ unsigned int tlb_check;
+ unsigned int bus_check;
+ unsigned int assists_check;
+ unsigned int assist_state;
+ unsigned int path_info;
+ unsigned long long responder_addr;
+ unsigned long long requestor_addr;
+ unsigned long long fr[32];
};
#endif /* !defined(__ASSEMBLY__) */
diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
index 649dc3eda448..eafd06ab59ef 100644
--- a/arch/parisc/kernel/Makefile
+++ b/arch/parisc/kernel/Makefile
@@ -9,8 +9,7 @@ obj-y := cache.o pacache.o setup.o pdt.o traps.o time.o irq.o \
pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
ptrace.o hardware.o inventory.o drivers.o \
signal.o hpmc.o real2.o parisc_ksyms.o unaligned.o \
- process.o processor.o pdc_cons.o pdc_chassis.o unwind.o \
- topology.o
+ process.o processor.o pdc_cons.o pdc_chassis.o unwind.o
ifdef CONFIG_FUNCTION_TRACER
# Do not profile debug and lowlevel utilities
@@ -30,5 +29,6 @@ obj-$(CONFIG_AUDIT) += audit.o
obj64-$(CONFIG_AUDIT) += compat_audit.o
# only supported for PCX-W/U in 64-bit mode at the moment
obj-$(CONFIG_64BIT) += perf.o perf_asm.o $(obj64-y)
+obj-$(CONFIG_PARISC_CPU_TOPOLOGY) += topology.o
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o
obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index e120d63c1b28..45cc65902fce 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -184,6 +184,9 @@ static int __init processor_probe(struct parisc_device *dev)
p->txn_addr = txn_addr; /* save CPU IRQ address */
p->cpu_num = cpu_info.cpu_num;
p->cpu_loc = cpu_info.cpu_loc;
+
+ store_cpu_topology(cpuid);
+
#ifdef CONFIG_SMP
/*
** FIXME: review if any other initialization is clobbered
@@ -325,6 +328,8 @@ int __init init_per_cpu(int cpunum)
set_firmware_width();
ret = pdc_coproc_cfg(&coproc_cfg);
+ store_cpu_topology(cpunum);
+
if(ret >= 0 && coproc_cfg.ccr_functional) {
mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */
@@ -388,6 +393,14 @@ show_cpuinfo (struct seq_file *m, void *v)
boot_cpu_data.cpu_hz / 1000000,
boot_cpu_data.cpu_hz % 1000000 );
+#ifdef CONFIG_PARISC_CPU_TOPOLOGY
+ seq_printf(m, "physical id\t: %d\n",
+ topology_physical_package_id(cpu));
+ seq_printf(m, "siblings\t: %d\n",
+ cpumask_weight(topology_core_cpumask(cpu)));
+ seq_printf(m, "core id\t\t: %d\n", topology_core_id(cpu));
+#endif
+
seq_printf(m, "capabilities\t:");
if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)
seq_puts(m, " os32");
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f7d0c3b33d70..0e9675f857a5 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -408,6 +408,8 @@ void __init start_parisc(void)
cpunum = smp_processor_id();
+ init_cpu_topology();
+
set_firmware_width_unlocked();
ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 41e60a9c7db2..e775f80ae28c 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -690,15 +690,15 @@ cas_action:
/* ELF32 Process entry path */
lws_compare_and_swap_2:
#ifdef CONFIG_64BIT
- /* Clip the input registers */
+ /* Clip the input registers. We don't need to clip %r23 as we
+ only use it for word operations */
depdi 0, 31, 32, %r26
depdi 0, 31, 32, %r25
depdi 0, 31, 32, %r24
- depdi 0, 31, 32, %r23
#endif
/* Check the validity of the size pointer */
- subi,>>= 4, %r23, %r0
+ subi,>>= 3, %r23, %r0
b,n lws_exit_nosys
/* Jump to the functions which will load the old and new values into
diff --git a/arch/parisc/kernel/topology.c b/arch/parisc/kernel/topology.c
index f5159381fdd6..0a10e4ddc528 100644
--- a/arch/parisc/kernel/topology.c
+++ b/arch/parisc/kernel/topology.c
@@ -1,37 +1,142 @@
/*
- * arch/parisc/kernel/topology.c - Populate sysfs with topology information
+ * arch/parisc/kernel/topology.c
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2017 Helge Deller <deller@gmx.de>
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more
- * details.
+ * based on arch/arm/kernel/topology.c
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
*/
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/cpu.h>
-#include <linux/cache.h>
+#include <linux/percpu.h>
+#include <linux/sched.h>
+#include <linux/sched/topology.h>
-static DEFINE_PER_CPU(struct cpu, cpu_devices);
+#include <asm/topology.h>
-static int __init topology_init(void)
+ /*
+ * cpu topology table
+ */
+struct cputopo_parisc cpu_topology[NR_CPUS] __read_mostly;
+EXPORT_SYMBOL_GPL(cpu_topology);
+
+const struct cpumask *cpu_coregroup_mask(int cpu)
{
- int num;
+ return &cpu_topology[cpu].core_sibling;
+}
+
+static void update_siblings_masks(unsigned int cpuid)
+{
+ struct cputopo_parisc *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
+ int cpu;
+
+ /* update core and thread sibling masks */
+ for_each_possible_cpu(cpu) {
+ cpu_topo = &cpu_topology[cpu];
+
+ if (cpuid_topo->socket_id != cpu_topo->socket_id)
+ continue;
+
+ cpumask_set_cpu(cpuid, &cpu_topo->core_sibling);
+ if (cpu != cpuid)
+ cpumask_set_cpu(cpu, &cpuid_topo->core_sibling);
+
+ if (cpuid_topo->core_id != cpu_topo->core_id)
+ continue;
+
+ cpumask_set_cpu(cpuid, &cpu_topo->thread_sibling);
+ if (cpu != cpuid)
+ cpumask_set_cpu(cpu, &cpuid_topo->thread_sibling);
+ }
+ smp_wmb();
+}
+
+static int dualcores_found __initdata;
+
+/*
+ * store_cpu_topology is called at boot when only one cpu is running
+ * and with the mutex cpu_hotplug.lock locked, when several cpus have booted,
+ * which prevents simultaneous write access to cpu_topology array
+ */
+void __init store_cpu_topology(unsigned int cpuid)
+{
+ struct cputopo_parisc *cpuid_topo = &cpu_topology[cpuid];
+ struct cpuinfo_parisc *p;
+ int max_socket = -1;
+ unsigned long cpu;
+
+ /* If the cpu topology has been already set, just return */
+ if (cpuid_topo->core_id != -1)
+ return;
- for_each_present_cpu(num) {
- register_cpu(&per_cpu(cpu_devices, num), num);
+ /* create cpu topology mapping */
+ cpuid_topo->thread_id = -1;
+ cpuid_topo->core_id = 0;
+
+ p = &per_cpu(cpu_data, cpuid);
+ for_each_online_cpu(cpu) {
+ const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
+
+ if (cpu == cpuid) /* ignore current cpu */
+ continue;
+
+ if (cpuinfo->cpu_loc == p->cpu_loc) {
+ cpuid_topo->core_id = cpu_topology[cpu].core_id;
+ if (p->cpu_loc) {
+ cpuid_topo->core_id++;
+ cpuid_topo->socket_id = cpu_topology[cpu].socket_id;
+ dualcores_found = 1;
+ continue;
+ }
+ }
+
+ if (cpuid_topo->socket_id == -1)
+ max_socket = max(max_socket, cpu_topology[cpu].socket_id);
}
- return 0;
+
+ if (cpuid_topo->socket_id == -1)
+ cpuid_topo->socket_id = max_socket + 1;
+
+ update_siblings_masks(cpuid);
+
+ pr_info("CPU%u: thread %d, cpu %d, socket %d\n",
+ cpuid, cpu_topology[cpuid].thread_id,
+ cpu_topology[cpuid].core_id,
+ cpu_topology[cpuid].socket_id);
}
-subsys_initcall(topology_init);
+static struct sched_domain_topology_level parisc_mc_topology[] = {
+#ifdef CONFIG_SCHED_MC
+ { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) },
+#endif
+
+ { cpu_cpu_mask, SD_INIT_NAME(DIE) },
+ { NULL, },
+};
+
+/*
+ * init_cpu_topology is called at boot when only one cpu is running
+ * which prevent simultaneous write access to cpu_topology array
+ */
+void __init init_cpu_topology(void)
+{
+ unsigned int cpu;
+
+ /* init core mask and capacity */
+ for_each_possible_cpu(cpu) {
+ struct cputopo_parisc *cpu_topo = &(cpu_topology[cpu]);
+
+ cpu_topo->thread_id = -1;
+ cpu_topo->core_id = -1;
+ cpu_topo->socket_id = -1;
+ cpumask_clear(&cpu_topo->core_sibling);
+ cpumask_clear(&cpu_topo->thread_sibling);
+ }
+ smp_wmb();
+
+ /* Set scheduler topology descriptor */
+ if (dualcores_found)
+ set_sched_topology(parisc_mc_topology);
+}