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-rw-r--r--arch/powerpc/platforms/powernv/eeh-ioda.c2
-rw-r--r--arch/powerpc/platforms/powernv/eeh-powernv.c57
-rw-r--r--arch/powerpc/platforms/powernv/opal-lpc.c4
-rw-r--r--arch/powerpc/platforms/powernv/opal-wrappers.S2
-rw-r--r--arch/powerpc/platforms/powernv/opal.c21
-rw-r--r--arch/powerpc/platforms/powernv/pci.c2
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c22
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c4
-rw-r--r--arch/powerpc/platforms/pseries/iommu.c11
-rw-r--r--arch/powerpc/platforms/pseries/pseries.h3
10 files changed, 100 insertions, 28 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 426814a2ede3..eba9cb10619c 100644
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -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 |
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 3e89cbf55885..1d19e7917d7f 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -169,6 +169,26 @@ static int powernv_eeh_dev_probe(struct pci_dev *dev, void *flag)
}
/*
+ * 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
* PCI devices of the PE are expected to be removed prior
@@ -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
};
diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c
index dd2c285ad170..ad4b31df779a 100644
--- a/arch/powerpc/platforms/powernv/opal-lpc.c
+++ b/arch/powerpc/platforms/powernv/opal-lpc.c
@@ -191,7 +191,6 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
{
struct lpc_debugfs_entry *lpc = filp->private_data;
u32 data, pos, len, todo;
- __be32 bedata;
int rc;
if (!access_ok(VERIFY_WRITE, ubuf, count))
@@ -214,10 +213,9 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
len = 2;
}
rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos,
- &bedata, len);
+ &data, len);
if (rc)
return -ENXIO;
- data = be32_to_cpu(bedata);
switch(len) {
case 4:
rc = __put_user((u32)data, (u32 __user *)ubuf);
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index e9e2450c1fdd..feb549aa3eea 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -58,7 +58,7 @@ END_FTR_SECTION(0, 1); \
*/
#define OPAL_CALL(name, token) \
- _GLOBAL(name); \
+ _GLOBAL_TOC(name); \
mflr r0; \
std r0,16(r1); \
li r0,token; \
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index b642b0562f5a..d019b081df9d 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -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
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index b3ca77ddf36d..b2187d0068b8 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -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)
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index fdf01b660d59..6ad83bd11fe2 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -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;
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index b174fa751d26..5c375f93c669 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -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:
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index de1ec54a2a57..e32e00976a94 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -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;
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 361add62abf1..1796c5438cc6 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -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 *);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 11:09:29 +0000