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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Browse Source 
Pull more powerpc updates from Michael Ellerman:
 "Here's some more updates for powerpc for 3.18.

  They are a bit late I know, though must are actually bug fixes.  In my
  defence I nearly cut the top of my finger off last weekend in a
  gruesome bike maintenance accident, so I spent a good part of the week
  waiting around for doctors.  True story, I can send photos if you like :)

  Probably the most interesting fix is the sys_call_table one, which
  enables syscall tracing for powerpc.  There's a fix for HMI handling
  for old firmware, more endian fixes for firmware interfaces, more EEH
  fixes, Anton fixed our routine that gets the current stack pointer,
  and a few other misc bits"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (22 commits)
  powerpc: Only do dynamic DMA zone limits on platforms that need it
  powerpc: sync pseries_le_defconfig with pseries_defconfig
  powerpc: Add printk levels to setup_system output
  powerpc/vphn: NUMA node code expects big-endian
  powerpc/msi: Use WARN_ON() in msi bitmap selftests
  powerpc/msi: Fix the msi bitmap alignment tests
  powerpc/eeh: Block CFG upon frozen Shiner adapter
  powerpc/eeh: Don't collect logs on PE with blocked config space
  powerpc/eeh: Block PCI config access upon frozen PE
  powerpc/pseries: Drop config requests in EEH accessors
  powerpc/powernv: Drop config requests in EEH accessors
  powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED
  powerpc/eeh: Fix condition for isolated state
  powerpc/pseries: Make CPU hotplug path endian safe
  powerpc/pseries: Use dump_stack instead of show_stack
  powerpc: Rename __get_SP() to current_stack_pointer()
  powerpc: Reimplement __get_SP() as a function not a define
  powerpc/numa: Add ability to disable and debug topology updates
  powerpc/numa: check error return from proc_create
  powerpc/powernv: Fallback to old HMI handling behavior for old firmware
  ...
This commit is contained in:
Linus Torvalds 2014-10-21 07:48:56 -07:00
commit dc303408a7
28 changed files with 261 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/kernel-parameters.txt
View File

@ -3465,6 +3465,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
e.g. base its process migration decisions on it.
Default is on.
topology_updates= [KNL, PPC, NUMA]
Format: {off}
Specify if the kernel should ignore (off)
topology updates sent by the hypervisor to this
LPAR.
tp720= [HW,PS2]
tpm_suspend_pcr=[HW,TPM]

7
arch/powerpc/configs/pseries_le_defconfig
View File

@ -48,7 +48,6 @@ CONFIG_KEXEC=y
CONFIG_IRQ_ALL_CPUS=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_CMA=y
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_SUBPAGE_PROT=y
CONFIG_SCHED_SMT=y
@ -138,6 +137,7 @@ CONFIG_NETCONSOLE=y
CONFIG_NETPOLL_TRAP=y
CONFIG_TUN=m
CONFIG_VIRTIO_NET=m
CONFIG_VHOST_NET=m
CONFIG_VORTEX=y
CONFIG_ACENIC=m
CONFIG_ACENIC_OMIT_TIGON_I=y
@ -303,4 +303,9 @@ CONFIG_CRYPTO_LZO=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DEV_NX=y
CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
CONFIG_VIRTUALIZATION=y
CONFIG_KVM_BOOK3S_64=m
CONFIG_KVM_BOOK3S_64_HV=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y

3
arch/powerpc/include/asm/eeh.h
View File

@ -71,9 +71,10 @@ struct device_node;
#define EEH_PE_ISOLATED (1 << 0) /* Isolated PE */
#define EEH_PE_RECOVERING (1 << 1) /* Recovering PE */
#define EEH_PE_RESET (1 << 2) /* PE reset in progress */
#define EEH_PE_CFG_BLOCKED (1 << 2) /* Block config access */
#define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */
#define EEH_PE_CFG_RESTRICTED (1 << 9) /* Block config on error */
struct eeh_pe {
int type; /* PE type: PHB/Bus/Device */

2
arch/powerpc/include/asm/perf_event.h
View File

@ -34,7 +34,7 @@
do { \
(regs)->result = 0; \
(regs)->nip = __ip; \
(regs)->gpr[1] = *(unsigned long *)__get_SP(); \
(regs)->gpr[1] = current_stack_pointer(); \
asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \
} while (0)
#endif

3
arch/powerpc/include/asm/reg.h
View File

@ -1265,8 +1265,7 @@ static inline unsigned long mfvtb (void)
#define proc_trap() asm volatile("trap")
#define __get_SP() ({unsigned long sp; \
asm volatile("mr %0,1": "=r" (sp)); sp;})
extern unsigned long current_stack_pointer(void);
extern unsigned long scom970_read(unsigned int address);
extern void scom970_write(unsigned int address, unsigned long value);

2
arch/powerpc/include/asm/syscall.h
View File

@ -19,7 +19,7 @@
/* ftrace syscalls requires exporting the sys_call_table */
#ifdef CONFIG_FTRACE_SYSCALLS
extern const unsigned long *sys_call_table;
extern const unsigned long sys_call_table[];
#endif /* CONFIG_FTRACE_SYSCALLS */
static inline long syscall_get_nr(struct task_struct *task,

8
arch/powerpc/kernel/dma.c
View File

@ -53,9 +53,16 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
#else
struct page *page;
int node = dev_to_node(dev);
#ifdef CONFIG_FSL_SOC
u64 pfn = get_pfn_limit(dev);
int zone;
/*
* This code should be OK on other platforms, but we have drivers that
* don't set coherent_dma_mask. As a workaround we just ifdef it. This
* whole routine needs some serious cleanup.
*/
zone = dma_pfn_limit_to_zone(pfn);
if (zone < 0) {
dev_err(dev, "%s: No suitable zone for pfn %#llx\n",
@ -73,6 +80,7 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size,
break;
#endif
};
#endif /* CONFIG_FSL_SOC */
/* ignore region specifiers */
flag &= ~(__GFP_HIGHMEM);

19
arch/powerpc/kernel/eeh.c
View File

@ -257,6 +257,13 @@ static void *eeh_dump_pe_log(void *data, void *flag)
struct eeh_dev *edev, *tmp;
size_t *plen = flag;
/* If the PE's config space is blocked, 0xFF's will be
* returned. It's pointless to collect the log in this
* case.
*/
if (pe->state & EEH_PE_CFG_BLOCKED)
return NULL;
eeh_pe_for_each_dev(pe, edev, tmp)
*plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen,
EEH_PCI_REGS_LOG_LEN - *plen);
@ -673,18 +680,18 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat
switch (state) {
case pcie_deassert_reset:
eeh_ops->reset(pe, EEH_RESET_DEACTIVATE);
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
break;
case pcie_hot_reset:
eeh_pe_state_mark(pe, EEH_PE_RESET);
eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
eeh_ops->reset(pe, EEH_RESET_HOT);
break;
case pcie_warm_reset:
eeh_pe_state_mark(pe, EEH_PE_RESET);
eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL);
break;
default:
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
return -EINVAL;
};
@ -1523,7 +1530,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
switch (option) {
case EEH_RESET_DEACTIVATE:
ret = eeh_ops->reset(pe, option);
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
if (ret)
break;
@ -1538,7 +1545,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option)
*/
eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE);
eeh_pe_state_mark(pe, EEH_PE_RESET);
eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
ret = eeh_ops->reset(pe, option);
break;
default:

12
arch/powerpc/kernel/eeh_driver.c
View File

@ -528,13 +528,13 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe)
eeh_pe_dev_traverse(pe, eeh_report_error, &result);
/* Issue reset */
eeh_pe_state_mark(pe, EEH_PE_RESET);
eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
ret = eeh_reset_pe(pe);
if (ret) {
eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_CFG_BLOCKED);
return ret;
}
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
/* Unfreeze the PE */
ret = eeh_clear_pe_frozen_state(pe, true);
@ -601,10 +601,10 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
* config accesses. So we prefer to block them. However, controlled
* PCI config accesses initiated from EEH itself are allowed.
*/
eeh_pe_state_mark(pe, EEH_PE_RESET);
eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED);
rc = eeh_reset_pe(pe);
if (rc) {
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
return rc;
}
@ -613,7 +613,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus)
/* Restore PE */
eeh_ops->configure_bridge(pe);
eeh_pe_restore_bars(pe);
eeh_pe_state_clear(pe, EEH_PE_RESET);
eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED);
/* Clear frozen state */
rc = eeh_clear_pe_frozen_state(pe, false);

10
arch/powerpc/kernel/eeh_pe.c
View File

@ -525,7 +525,7 @@ static void *__eeh_pe_state_mark(void *data, void *flag)
pe->state |= state;
/* Offline PCI devices if applicable */
if (state != EEH_PE_ISOLATED)
if (!(state & EEH_PE_ISOLATED))
return NULL;
eeh_pe_for_each_dev(pe, edev, tmp) {
@ -534,6 +534,10 @@ static void *__eeh_pe_state_mark(void *data, void *flag)
pdev->error_state = pci_channel_io_frozen;
}
/* Block PCI config access if required */
if (pe->state & EEH_PE_CFG_RESTRICTED)
pe->state |= EEH_PE_CFG_BLOCKED;
return NULL;
}
@ -611,6 +615,10 @@ static void *__eeh_pe_state_clear(void *data, void *flag)
pdev->error_state = pci_channel_io_normal;
}
/* Unblock PCI config access if required */
if (pe->state & EEH_PE_CFG_RESTRICTED)
pe->state &= ~EEH_PE_CFG_BLOCKED;
return NULL;
}

5
arch/powerpc/kernel/exceptions-64s.S
View File

@ -1270,11 +1270,6 @@ hmi_exception_early:
addi r3,r1,STACK_FRAME_OVERHEAD
bl hmi_exception_realmode
/* Windup the stack. */
/* Clear MSR_RI before setting SRR0 and SRR1. */
li r0,MSR_RI
mfmsr r9 /* get MSR value */
andc r9,r9,r0
mtmsrd r9,1 /* Clear MSR_RI */
/* Move original HSRR0 and HSRR1 into the respective regs */
ld r9,_MSR(r1)
mtspr SPRN_HSRR1,r9

2
arch/powerpc/kernel/irq.c
View File

@ -466,7 +466,7 @@ static inline void check_stack_overflow(void)
#ifdef CONFIG_DEBUG_STACKOVERFLOW
long sp;
sp = __get_SP() & (THREAD_SIZE-1);
sp = current_stack_pointer() & (THREAD_SIZE-1);
/* check for stack overflow: is there less than 2KB free? */
if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {

4
arch/powerpc/kernel/misc.S
View File

@ -114,3 +114,7 @@ _GLOBAL(longjmp)
mtlr r0
mr r3,r4
blr
_GLOBAL(current_stack_pointer)
PPC_LL r3,0(r1)
blr

2
arch/powerpc/kernel/ppc_ksyms.c
View File

@ -41,3 +41,5 @@ EXPORT_SYMBOL(giveup_spe);
#ifdef CONFIG_EPAPR_PARAVIRT
EXPORT_SYMBOL(epapr_hypercall_start);
#endif
EXPORT_SYMBOL(current_stack_pointer);

2
arch/powerpc/kernel/process.c
View File

@ -1545,7 +1545,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
tsk = current;
if (sp == 0) {
if (tsk == current)
asm("mr %0,1" : "=r" (sp));
sp = current_stack_pointer();
else
sp = tsk->thread.ksp;
}

30
arch/powerpc/kernel/rtas_pci.c
View File

@ -66,6 +66,11 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val)
return PCIBIOS_DEVICE_NOT_FOUND;
if (!config_access_valid(pdn, where))
return PCIBIOS_BAD_REGISTER_NUMBER;
#ifdef CONFIG_EEH
if (pdn->edev && pdn->edev->pe &&
(pdn->edev->pe->state & EEH_PE_CFG_BLOCKED))
return PCIBIOS_SET_FAILED;
#endif
addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
buid = pdn->phb->buid;
@ -90,9 +95,6 @@ static int rtas_pci_read_config(struct pci_bus *bus,
struct device_node *busdn, *dn;
struct pci_dn *pdn;
bool found = false;
#ifdef CONFIG_EEH
struct eeh_dev *edev;
#endif
int ret;
/* Search only direct children of the bus */
@ -109,11 +111,6 @@ static int rtas_pci_read_config(struct pci_bus *bus,
if (!found)
return PCIBIOS_DEVICE_NOT_FOUND;
#ifdef CONFIG_EEH
edev = of_node_to_eeh_dev(dn);
if (edev && edev->pe && edev->pe->state & EEH_PE_RESET)
return PCIBIOS_DEVICE_NOT_FOUND;
#endif
ret = rtas_read_config(pdn, where, size, val);
if (*val == EEH_IO_ERROR_VALUE(size) &&
@ -132,6 +129,11 @@ int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val)
return PCIBIOS_DEVICE_NOT_FOUND;
if (!config_access_valid(pdn, where))
return PCIBIOS_BAD_REGISTER_NUMBER;
#ifdef CONFIG_EEH
if (pdn->edev && pdn->edev->pe &&
(pdn->edev->pe->state & EEH_PE_CFG_BLOCKED))
return PCIBIOS_SET_FAILED;
#endif
addr = rtas_config_addr(pdn->busno, pdn->devfn, where);
buid = pdn->phb->buid;
@ -155,10 +157,6 @@ static int rtas_pci_write_config(struct pci_bus *bus,
struct device_node *busdn, *dn;
struct pci_dn *pdn;
bool found = false;
#ifdef CONFIG_EEH
struct eeh_dev *edev;
#endif
int ret;
/* Search only direct children of the bus */
busdn = pci_bus_to_OF_node(bus);
@ -173,14 +171,8 @@ static int rtas_pci_write_config(struct pci_bus *bus,
if (!found)
return PCIBIOS_DEVICE_NOT_FOUND;
#ifdef CONFIG_EEH
edev = of_node_to_eeh_dev(dn);
if (edev && edev->pe && (edev->pe->state & EEH_PE_RESET))
return PCIBIOS_DEVICE_NOT_FOUND;
#endif
ret = rtas_write_config(pdn, where, size, val);
return ret;
return rtas_write_config(pdn, where, size, val);
}
static struct pci_ops rtas_pci_ops = {

32
arch/powerpc/kernel/setup_64.c
View File

@ -522,36 +522,36 @@ void __init setup_system(void)
smp_release_cpus();
#endif
printk("Starting Linux PPC64 %s\n", init_utsname()->version);
pr_info("Starting Linux PPC64 %s\n", init_utsname()->version);
printk("-----------------------------------------------------\n");
printk("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
printk("phys_mem_size = 0x%llx\n", memblock_phys_mem_size());
pr_info("-----------------------------------------------------\n");
pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size);
pr_info("phys_mem_size = 0x%llx\n", memblock_phys_mem_size());
if (ppc64_caches.dline_size != 0x80)
printk("dcache_line_size = 0x%x\n", ppc64_caches.dline_size);
pr_info("dcache_line_size = 0x%x\n", ppc64_caches.dline_size);
if (ppc64_caches.iline_size != 0x80)
printk("icache_line_size = 0x%x\n", ppc64_caches.iline_size);
pr_info("icache_line_size = 0x%x\n", ppc64_caches.iline_size);
printk("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features);
printk(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE);
printk(" always = 0x%016lx\n", CPU_FTRS_ALWAYS);
printk("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features,
pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features);
pr_info(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE);
pr_info(" always = 0x%016lx\n", CPU_FTRS_ALWAYS);
pr_info("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features,
cur_cpu_spec->cpu_user_features2);
printk("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features);
printk("firmware_features = 0x%016lx\n", powerpc_firmware_features);
pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features);
pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features);
#ifdef CONFIG_PPC_STD_MMU_64
if (htab_address)
printk("htab_address = 0x%p\n", htab_address);
pr_info("htab_address = 0x%p\n", htab_address);
printk("htab_hash_mask = 0x%lx\n", htab_hash_mask);
pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask);
#endif
if (PHYSICAL_START > 0)
printk("physical_start = 0x%llx\n",
pr_info("physical_start = 0x%llx\n",
(unsigned long long)PHYSICAL_START);
printk("-----------------------------------------------------\n");
pr_info("-----------------------------------------------------\n");
DBG(" <- setup_system()\n");
}

2
arch/powerpc/kernel/stacktrace.c
View File

@ -50,7 +50,7 @@ void save_stack_trace(struct stack_trace *trace)
{
unsigned long sp;
asm("mr %0,1" : "=r" (sp));
sp = current_stack_pointer();
save_context_stack(trace, sp, current, 1);
}

39
arch/powerpc/mm/numa.c
View File

@ -8,6 +8,8 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#define pr_fmt(fmt) "numa: " fmt
#include <linux/threads.h>
#include <linux/bootmem.h>
#include <linux/init.h>
@ -1153,6 +1155,22 @@ static int __init early_numa(char *p)
}
early_param("numa", early_numa);
static bool topology_updates_enabled = true;
static int __init early_topology_updates(char *p)
{
if (!p)
return 0;
if (!strcmp(p, "off")) {
pr_info("Disabling topology updates\n");
topology_updates_enabled = false;
}
return 0;
}
early_param("topology_updates", early_topology_updates);
#ifdef CONFIG_MEMORY_HOTPLUG
/*
* Find the node associated with a hot added memory section for
@ -1442,8 +1460,11 @@ static long hcall_vphn(unsigned long cpu, __be32 *associativity)
long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
u64 flags = 1;
int hwcpu = get_hard_smp_processor_id(cpu);
int i;
rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, hwcpu);
for (i = 0; i < 6; i++)
retbuf[i] = cpu_to_be64(retbuf[i]);
vphn_unpack_associativity(retbuf, associativity);
return rc;
@ -1539,6 +1560,9 @@ int arch_update_cpu_topology(void)
struct device *dev;
int weight, new_nid, i = 0;
if (!prrn_enabled && !vphn_enabled)
return 0;
weight = cpumask_weight(&cpu_associativity_changes_mask);
if (!weight)
return 0;
@ -1592,6 +1616,15 @@ int arch_update_cpu_topology(void)
cpu = cpu_last_thread_sibling(cpu);
}
pr_debug("Topology update for the following CPUs:\n");
if (cpumask_weight(&updated_cpus)) {
for (ud = &updates[0]; ud; ud = ud->next) {
pr_debug("cpu %d moving from node %d "
"to %d\n", ud->cpu,
ud->old_nid, ud->new_nid);
}
}
/*
* In cases where we have nothing to update (because the updates list
* is too short or because the new topology is same as the old one),
@ -1800,8 +1833,12 @@ static const struct file_operations topology_ops = {
static int topology_update_init(void)
{
/* Do not poll for changes if disabled at boot */
if (topology_updates_enabled)
start_topology_update();
proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops);
if (!proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops))
return -ENOMEM;
return 0;
}

2
arch/powerpc/platforms/powernv/eeh-ioda.c
View File

@ -373,7 +373,7 @@ static int ioda_eeh_get_pe_state(struct eeh_pe *pe)
* moving forward, we have to return operational
* state during PE reset.
*/
if (pe->state & EEH_PE_RESET) {
if (pe->state & EEH_PE_CFG_BLOCKED) {
result = (EEH_STATE_MMIO_ACTIVE |
EEH_STATE_DMA_ACTIVE |
EEH_STATE_MMIO_ENABLED |

57
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -168,6 +168,26 @@ static int powernv_eeh_dev_probe(struct pci_dev *dev, void *flag)
return ret;
}
/*
* If the PE contains any one of following adapters, the
* PCI config space can't be accessed when dumping EEH log.
* Otherwise, we will run into fenced PHB caused by shortage
* of outbound credits in the adapter. The PCI config access
* should be blocked until PE reset. MMIO access is dropped
* by hardware certainly. In order to drop PCI config requests,
* one more flag (EEH_PE_CFG_RESTRICTED) is introduced, which
* will be checked in the backend for PE state retrival. If
* the PE becomes frozen for the first time and the flag has
* been set for the PE, we will set EEH_PE_CFG_BLOCKED for
* that PE to block its config space.
*
* Broadcom Austin 4-ports NICs (14e4:1657)
* Broadcom Shiner 2-ports 10G NICs (14e4:168e)
*/
if ((dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x1657) ||
(dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x168e))
edev->pe->state |= EEH_PE_CFG_RESTRICTED;
/*
* Cache the PE primary bus, which can't be fetched when
* full hotplug is in progress. In that case, all child
@ -383,6 +403,39 @@ static int powernv_eeh_err_inject(struct eeh_pe *pe, int type, int func,
return ret;
}
static inline bool powernv_eeh_cfg_blocked(struct device_node *dn)
{
struct eeh_dev *edev = of_node_to_eeh_dev(dn);
if (!edev || !edev->pe)
return false;
if (edev->pe->state & EEH_PE_CFG_BLOCKED)
return true;
return false;
}
static int powernv_eeh_read_config(struct device_node *dn,
int where, int size, u32 *val)
{
if (powernv_eeh_cfg_blocked(dn)) {
*val = 0xFFFFFFFF;
return PCIBIOS_SET_FAILED;
}
return pnv_pci_cfg_read(dn, where, size, val);
}
static int powernv_eeh_write_config(struct device_node *dn,
int where, int size, u32 val)
{
if (powernv_eeh_cfg_blocked(dn))
return PCIBIOS_SET_FAILED;
return pnv_pci_cfg_write(dn, where, size, val);
}
/**
* powernv_eeh_next_error - Retrieve next EEH error to handle
* @pe: Affected PE
@ -440,8 +493,8 @@ static struct eeh_ops powernv_eeh_ops = {
.get_log = powernv_eeh_get_log,
.configure_bridge = powernv_eeh_configure_bridge,
.err_inject = powernv_eeh_err_inject,
.read_config = pnv_pci_cfg_read,
.write_config = pnv_pci_cfg_write,
.read_config = powernv_eeh_read_config,
.write_config = powernv_eeh_write_config,
.next_error = powernv_eeh_next_error,
.restore_config = powernv_eeh_restore_config
};

21
arch/powerpc/platforms/powernv/opal.c
View File

@ -194,6 +194,27 @@ static int __init opal_register_exception_handlers(void)
* fwnmi area at 0x7000 to provide the glue space to OPAL
*/
glue = 0x7000;
/*
* Check if we are running on newer firmware that exports
* OPAL_HANDLE_HMI token. If yes, then don't ask OPAL to patch
* the HMI interrupt and we catch it directly in Linux.
*
* For older firmware (i.e currently released POWER8 System Firmware
* as of today <= SV810_087), we fallback to old behavior and let OPAL
* patch the HMI vector and handle it inside OPAL firmware.
*
* For newer firmware (in development/yet to be released) we will
* start catching/handling HMI directly in Linux.
*/
if (!opal_check_token(OPAL_HANDLE_HMI)) {
pr_info("opal: Old firmware detected, OPAL handles HMIs.\n");
opal_register_exception_handler(
OPAL_HYPERVISOR_MAINTENANCE_HANDLER,
0, glue);
glue += 128;
}
opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue);
#endif

2
arch/powerpc/platforms/powernv/pci.c
View File

@ -505,7 +505,7 @@ static bool pnv_pci_cfg_check(struct pci_controller *hose,
edev = of_node_to_eeh_dev(dn);
if (edev) {
if (edev->pe &&
(edev->pe->state & EEH_PE_RESET))
(edev->pe->state & EEH_PE_CFG_BLOCKED))
return false;
if (edev->mode & EEH_DEV_REMOVED)

22
arch/powerpc/platforms/pseries/dlpar.c
View File

@ -25,11 +25,11 @@
#include <asm/rtas.h>
struct cc_workarea {
u32 drc_index;
u32 zero;
u32 name_offset;
u32 prop_length;
u32 prop_offset;
__be32 drc_index;
__be32 zero;
__be32 name_offset;
__be32 prop_length;
__be32 prop_offset;
};
void dlpar_free_cc_property(struct property *prop)
@ -49,11 +49,11 @@ static struct property *dlpar_parse_cc_property(struct cc_workarea *ccwa)
if (!prop)
return NULL;
name = (char *)ccwa + ccwa->name_offset;
name = (char *)ccwa + be32_to_cpu(ccwa->name_offset);
prop->name = kstrdup(name, GFP_KERNEL);
prop->length = ccwa->prop_length;
value = (char *)ccwa + ccwa->prop_offset;
prop->length = be32_to_cpu(ccwa->prop_length);
value = (char *)ccwa + be32_to_cpu(ccwa->prop_offset);
prop->value = kmemdup(value, prop->length, GFP_KERNEL);
if (!prop->value) {
dlpar_free_cc_property(prop);
@ -79,7 +79,7 @@ static struct device_node *dlpar_parse_cc_node(struct cc_workarea *ccwa,
if (!dn)
return NULL;
name = (char *)ccwa + ccwa->name_offset;
name = (char *)ccwa + be32_to_cpu(ccwa->name_offset);
dn->full_name = kasprintf(GFP_KERNEL, "%s/%s", path, name);
if (!dn->full_name) {
kfree(dn);
@ -126,7 +126,7 @@ void dlpar_free_cc_nodes(struct device_node *dn)
#define CALL_AGAIN -2
#define ERR_CFG_USE -9003
struct device_node *dlpar_configure_connector(u32 drc_index,
struct device_node *dlpar_configure_connector(__be32 drc_index,
struct device_node *parent)
{
struct device_node *dn;
@ -414,7 +414,7 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count)
if (!parent)
return -ENODEV;
dn = dlpar_configure_connector(drc_index, parent);
dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent);
if (!dn)
return -EINVAL;

4
arch/powerpc/platforms/pseries/hotplug-cpu.c
View File

@ -247,7 +247,7 @@ static int pseries_add_processor(struct device_node *np)
unsigned int cpu;
cpumask_var_t candidate_mask, tmp;
int err = -ENOSPC, len, nthreads, i;
const u32 *intserv;
const __be32 *intserv;
intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len);
if (!intserv)
@ -293,7 +293,7 @@ static int pseries_add_processor(struct device_node *np)
for_each_cpu(cpu, tmp) {
BUG_ON(cpu_present(cpu));
set_cpu_present(cpu, true);
set_hard_smp_processor_id(cpu, *intserv++);
set_hard_smp_processor_id(cpu, be32_to_cpu(*intserv++));
}
err = 0;
out_unlock:

11
arch/powerpc/platforms/pseries/iommu.c
View File

@ -30,7 +30,6 @@
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/spinlock.h>
#include <linux/sched.h> /* for show_stack */
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
@ -168,7 +167,7 @@ static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
printk("\ttcenum = 0x%llx\n", (u64)tcenum);
printk("\ttce val = 0x%llx\n", tce );
show_stack(current, (unsigned long *)__get_SP());
dump_stack();
}
tcenum++;
@ -257,7 +256,7 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
printk("\tnpages = 0x%llx\n", (u64)npages);
printk("\ttce[0] val = 0x%llx\n", tcep[0]);
show_stack(current, (unsigned long *)__get_SP());
dump_stack();
}
return ret;
}
@ -273,7 +272,7 @@ static void tce_free_pSeriesLP(struct iommu_table *tbl, long tcenum, long npages
printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
printk("\ttcenum = 0x%llx\n", (u64)tcenum);
show_stack(current, (unsigned long *)__get_SP());
dump_stack();
}
tcenum++;
@ -292,7 +291,7 @@ static void tce_freemulti_pSeriesLP(struct iommu_table *tbl, long tcenum, long n
printk("\trc = %lld\n", rc);
printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
printk("\tnpages = 0x%llx\n", (u64)npages);
show_stack(current, (unsigned long *)__get_SP());
dump_stack();
}
}
@ -307,7 +306,7 @@ static unsigned long tce_get_pSeriesLP(struct iommu_table *tbl, long tcenum)
printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%lld\n", rc);
printk("\tindex = 0x%llx\n", (u64)tbl->it_index);
printk("\ttcenum = 0x%llx\n", (u64)tcenum);
show_stack(current, (unsigned long *)__get_SP());
dump_stack();
}
return tce_ret;

3
arch/powerpc/platforms/pseries/pseries.h
View File

@ -56,7 +56,8 @@ extern void hvc_vio_init_early(void);
/* Dynamic logical Partitioning/Mobility */
extern void dlpar_free_cc_nodes(struct device_node *);
extern void dlpar_free_cc_property(struct property *);
extern struct device_node *dlpar_configure_connector(u32, struct device_node *);
extern struct device_node *dlpar_configure_connector(__be32,
struct device_node *);
extern int dlpar_attach_node(struct device_node *);
extern int dlpar_detach_node(struct device_node *);

66
arch/powerpc/sysdev/msi_bitmap.c
View File

@ -145,59 +145,64 @@ void msi_bitmap_free(struct msi_bitmap *bmp)
#ifdef CONFIG_MSI_BITMAP_SELFTEST
#define check(x) \
if (!(x)) printk("msi_bitmap: test failed at line %d\n", __LINE__);
static void __init test_basics(void)
{
struct msi_bitmap bmp;
int i, size = 512;
int rc, i, size = 512;
/* Can't allocate a bitmap of 0 irqs */
check(msi_bitmap_alloc(&bmp, 0, NULL) != 0);
WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0);
/* of_node may be NULL */
check(0 == msi_bitmap_alloc(&bmp, size, NULL));
WARN_ON(msi_bitmap_alloc(&bmp, size, NULL));
/* Should all be free by default */
check(0 == bitmap_find_free_region(bmp.bitmap, size,
get_count_order(size)));
WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
/* With no node, there's no msi-available-ranges, so expect > 0 */
check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0);
WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
/* Should all still be free */
check(0 == bitmap_find_free_region(bmp.bitmap, size,
get_count_order(size)));
WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
/* Check we can fill it up and then no more */
for (i = 0; i < size; i++)
check(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
/* Should all be allocated */
check(bitmap_find_free_region(bmp.bitmap, size, 0) < 0);
WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0);
/* And if we free one we can then allocate another */
msi_bitmap_free_hwirqs(&bmp, size / 2, 1);
check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2);
WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2);
/* Free most of them for the alignment tests */
msi_bitmap_free_hwirqs(&bmp, 3, size - 3);
/* Check we get a naturally aligned offset */
check(msi_bitmap_alloc_hwirqs(&bmp, 2) % 2 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 4) % 4 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 8) % 8 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 9) % 16 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 3) % 4 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 7) % 8 == 0);
check(msi_bitmap_alloc_hwirqs(&bmp, 121) % 128 == 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 2);
WARN_ON(rc < 0 && rc % 2 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 4);
WARN_ON(rc < 0 && rc % 4 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 8);
WARN_ON(rc < 0 && rc % 8 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 9);
WARN_ON(rc < 0 && rc % 16 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 3);
WARN_ON(rc < 0 && rc % 4 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 7);
WARN_ON(rc < 0 && rc % 8 != 0);
rc = msi_bitmap_alloc_hwirqs(&bmp, 121);
WARN_ON(rc < 0 && rc % 128 != 0);
msi_bitmap_free(&bmp);
/* Clients may check bitmap == NULL for "not-allocated" */
check(bmp.bitmap == NULL);
/* Clients may WARN_ON bitmap == NULL for "not-allocated" */
WARN_ON(bmp.bitmap != NULL);
kfree(bmp.bitmap);
}
@ -219,14 +224,13 @@ static void __init test_of_node(void)
of_node_init(&of_node);
of_node.full_name = node_name;
check(0 == msi_bitmap_alloc(&bmp, size, &of_node));
WARN_ON(msi_bitmap_alloc(&bmp, size, &of_node));
/* No msi-available-ranges, so expect > 0 */
check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0);
WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
/* Should all still be free */
check(0 == bitmap_find_free_region(bmp.bitmap, size,
get_count_order(size)));
WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
/* Now create a fake msi-available-ranges property */
@ -240,11 +244,11 @@ static void __init test_of_node(void)
of_node.properties = &prop;
/* msi-available-ranges, so expect == 0 */
check(msi_bitmap_reserve_dt_hwirqs(&bmp) == 0);
WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp));
/* Check we got the expected result */
check(0 == bitmap_parselist(expected_str, expected, size));
check(bitmap_equal(expected, bmp.bitmap, size));
WARN_ON(bitmap_parselist(expected_str, expected, size));
WARN_ON(!bitmap_equal(expected, bmp.bitmap, size));
msi_bitmap_free(&bmp);
kfree(bmp.bitmap);