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drivers/edac: updated PCI monitoring
Moving PCI to a per-instance device model This should include the correct sysfs setup as well. Please review. Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Douglas Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Jiang
Linus Torvalds
parent
81d87cb13e
commit
91b99041c1
@ -11,9 +11,12 @@ obj-$(CONFIG_EDAC) := edac_stub.o
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obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o
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edac_core-objs := edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
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edac_core-objs += edac_module.o edac_device_sysfs.o
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ifdef CONFIG_PCI
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edac_core-objs += edac_pci.o edac_pci_sysfs.o
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endif
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obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o
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obj-$(CONFIG_EDAC_I5000) += i5000_edac.o
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obj-$(CONFIG_EDAC_E7XXX) += e7xxx_edac.o
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@ -30,6 +30,8 @@
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static int force_function_unhide;
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static struct edac_pci_ctl_info *e752x_pci;
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#define e752x_printk(level, fmt, arg...) \
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edac_printk(level, "e752x", fmt, ##arg)
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@ -1040,6 +1042,17 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
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e752x_init_error_reporting_regs(pvt);
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e752x_get_error_info(mci, &discard); /* clear other MCH errors */
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/* allocating generic PCI control info */
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e752x_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
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if (!e752x_pci) {
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printk(KERN_WARNING
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"%s(): Unable to create PCI control\n",
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__func__);
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printk(KERN_WARNING
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"%s(): PCI error report via EDAC not setup\n",
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__func__);
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}
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/* get this far and it's successful */
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debugf3("%s(): success\n", __func__);
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return 0;
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@ -1073,6 +1086,9 @@ static void __devexit e752x_remove_one(struct pci_dev *pdev)
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debugf0("%s()\n", __func__);
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if (e752x_pci)
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edac_pci_release_generic_ctl(e752x_pci);
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if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
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return;
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@ -60,6 +60,10 @@
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#define edac_device_printk(ctl, level, fmt, arg...) \
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printk(level "EDAC DEVICE%d: " fmt, ctl->dev_idx, ##arg)
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/* edac_pci printk */
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#define edac_pci_printk(ctl, level, fmt, arg...) \
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printk(level "EDAC PCI%d: " fmt, ctl->pci_idx, ##arg)
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/* prefixes for edac_printk() and edac_mc_printk() */
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#define EDAC_MC "MC"
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#define EDAC_PCI "PCI"
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@ -200,6 +204,13 @@ enum scrub_type {
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/* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */
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/* EDAC internal operation states */
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#define OP_ALLOC 0x100
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#define OP_RUNNING_POLL 0x201
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#define OP_RUNNING_INTERRUPT 0x202
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#define OP_RUNNING_POLL_INTR 0x203
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#define OP_OFFLINE 0x300
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extern char * edac_align_ptr(void *ptr, unsigned size);
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/*
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@ -520,12 +531,6 @@ struct edac_device_ctl_info {
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/* the internal state of this controller instance */
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int op_state;
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#define OP_ALLOC 0x100
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#define OP_RUNNING_POLL 0x201
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#define OP_RUNNING_INTERRUPT 0x202
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#define OP_RUNNING_POLL_INTR 0x203
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#define OP_OFFLINE 0x300
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/* work struct for this instance */
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
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struct delayed_work work;
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@ -626,6 +631,84 @@ extern void edac_device_free_ctl_info( struct edac_device_ctl_info *ctl_info);
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#ifdef CONFIG_PCI
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struct edac_pci_counter {
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atomic_t pe_count;
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atomic_t npe_count;
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};
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/*
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* Abstract edac_pci control info structure
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*
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*/
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struct edac_pci_ctl_info {
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/* for global list of edac_pci_ctl_info structs */
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struct list_head link;
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int pci_idx;
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/* Per instance controls for this edac_device */
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int check_parity_error; /* boolean for checking parity errs */
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int log_parity_error; /* boolean for logging parity errs */
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int panic_on_pe; /* boolean for panic'ing on a PE */
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unsigned poll_msec; /* number of milliseconds to poll interval */
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unsigned long delay; /* number of jiffies for poll_msec */
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struct sysdev_class *edac_class; /* pointer to class */
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/* the internal state of this controller instance */
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int op_state;
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/* work struct for this instance */
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
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struct delayed_work work;
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#else
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struct work_struct work;
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#endif
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/* pointer to edac polling checking routine:
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* If NOT NULL: points to polling check routine
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* If NULL: Then assumes INTERRUPT operation, where
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* MC driver will receive events
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*/
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void (*edac_check) (struct edac_pci_ctl_info * edac_dev);
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struct device *dev; /* pointer to device structure */
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const char *mod_name; /* module name */
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const char *ctl_name; /* edac controller name */
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const char *dev_name; /* pci/platform/etc... name */
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void *pvt_info; /* pointer to 'private driver' info */
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unsigned long start_time;/* edac_pci load start time (jiffies)*/
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/* these are for safe removal of devices from global list while
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* NMI handlers may be traversing list
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*/
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struct rcu_head rcu;
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struct completion complete;
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/* sysfs top name under 'edac' directory
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* and instance name:
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* cpu/cpu0/...
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* cpu/cpu1/...
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* cpu/cpu2/...
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* ...
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*/
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char name[EDAC_DEVICE_NAME_LEN + 1];
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/* Event counters for the this whole EDAC Device */
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struct edac_pci_counter counters;
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/* edac sysfs device control for the 'name'
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* device this structure controls
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*/
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struct kobject kobj;
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struct completion kobj_complete;
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};
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#define to_edac_pci_ctl_work(w) \
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container_of(w, struct edac_pci_ctl_info,work)
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/* write all or some bits in a byte-register*/
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static inline void pci_write_bits8(struct pci_dev *pdev, int offset, u8 value,
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u8 mask)
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@ -726,5 +809,30 @@ extern void edac_device_handle_ue(struct edac_device_ctl_info *edac_dev,
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extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev,
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int inst_nr, int block_nr, const char *msg);
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/*
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* edac_pci APIs
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*/
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extern struct edac_pci_ctl_info *
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edac_pci_alloc_ctl_info(unsigned int sz_pvt, const char *edac_pci_name);
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extern void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci);
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extern void
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edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci, unsigned long value);
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extern int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx);
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extern struct edac_pci_ctl_info * edac_pci_del_device(struct device *dev);
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extern struct edac_pci_ctl_info *
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edac_pci_create_generic_ctl(struct device *dev, const char *mod_name);
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extern void edac_pci_release_generic_ctl(struct edac_pci_ctl_info *pci);
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extern int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci);
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extern void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci);
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/*
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* edac misc APIs
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*/
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extern char * edac_op_state_toString(int op_state);
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#endif /* _EDAC_CORE_H_ */
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@ -418,27 +418,6 @@ void edac_device_reset_delay_period(
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unlock_device_list();
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}
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/*
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* edac_op_state_toString(edac_dev)
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*/
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static char *edac_op_state_toString(struct edac_device_ctl_info *edac_dev)
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{
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int opstate = edac_dev->op_state;
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if (opstate == OP_RUNNING_POLL)
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return "POLLED";
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else if (opstate == OP_RUNNING_INTERRUPT)
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return "INTERRUPT";
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else if (opstate == OP_RUNNING_POLL_INTR)
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return "POLL-INTR";
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else if (opstate == OP_ALLOC)
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return "ALLOC";
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else if (opstate == OP_OFFLINE)
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return "OFFLINE";
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return "UNKNOWN";
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}
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/**
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* edac_device_add_device: Insert the 'edac_dev' structure into the
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* edac_device global list and create sysfs entries associated with
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@ -496,7 +475,7 @@ int edac_device_add_device(struct edac_device_ctl_info *edac_dev, int edac_idx)
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edac_dev->mod_name,
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edac_dev->ctl_name,
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dev_name(edac_dev),
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edac_op_state_toString(edac_dev)
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edac_op_state_toString(edac_dev->op_state)
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);
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unlock_device_list();
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@ -34,6 +34,25 @@ static struct sysdev_class edac_class = {
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};
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static int edac_class_valid = 0;
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/*
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* edac_op_state_toString()
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*/
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char * edac_op_state_toString(int opstate)
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{
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if (opstate == OP_RUNNING_POLL)
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return "POLLED";
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else if (opstate == OP_RUNNING_INTERRUPT)
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return "INTERRUPT";
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else if (opstate == OP_RUNNING_POLL_INTR)
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return "POLL-INTR";
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else if (opstate == OP_ALLOC)
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return "ALLOC";
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else if (opstate == OP_OFFLINE)
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return "OFFLINE";
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return "UNKNOWN";
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}
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/*
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* edac_get_edac_class()
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*
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@ -153,26 +172,16 @@ static int __init edac_init(void)
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goto error_sysfs;
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}
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/* Create the PCI parity sysfs entries */
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if (edac_sysfs_pci_setup()) {
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edac_printk(KERN_ERR, EDAC_MC,
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"PCI: Error initializing sysfs code\n");
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err = -ENODEV;
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goto error_mem;
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}
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/* Setup/Initialize the edac_device system */
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err = edac_workqueue_setup();
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if (err) {
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edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
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goto error_pci;
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goto error_mem;
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}
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return 0;
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/* Error teardown stack */
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error_pci:
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edac_sysfs_pci_teardown();
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error_mem:
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edac_sysfs_memctrl_teardown();
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error_sysfs:
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@ -192,7 +201,6 @@ static void __exit edac_exit(void)
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/* tear down the various subsystems*/
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edac_workqueue_teardown();
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edac_sysfs_memctrl_teardown();
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edac_sysfs_pci_teardown();
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edac_unregister_sysfs_edac_name();
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}
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451
drivers/edac/edac_pci.c
Normal file
451
drivers/edac/edac_pci.c
Normal file
@ -0,0 +1,451 @@
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/*
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* EDAC PCI component
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*
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* Author: Dave Jiang <djiang@mvista.com>
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/smp.h>
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#include <linux/init.h>
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#include <linux/sysctl.h>
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#include <linux/highmem.h>
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#include <linux/timer.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/list.h>
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#include <linux/sysdev.h>
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#include <linux/ctype.h>
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#include <linux/workqueue.h>
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#include <asm/uaccess.h>
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#include <asm/page.h>
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#include "edac_core.h"
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#include "edac_module.h"
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static DEFINE_MUTEX(edac_pci_ctls_mutex);
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static struct list_head edac_pci_list = LIST_HEAD_INIT(edac_pci_list);
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static inline void edac_lock_pci_list(void)
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{
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mutex_lock(&edac_pci_ctls_mutex);
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}
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static inline void edac_unlock_pci_list(void)
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{
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mutex_unlock(&edac_pci_ctls_mutex);
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}
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/*
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* The alloc() and free() functions for the 'edac_pci' control info
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* structure. The chip driver will allocate one of these for each
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* edac_pci it is going to control/register with the EDAC CORE.
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*/
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struct edac_pci_ctl_info * edac_pci_alloc_ctl_info(
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unsigned int sz_pvt,
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const char *edac_pci_name)
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{
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struct edac_pci_ctl_info *pci;
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void *pvt;
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unsigned int size;
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pci = (struct edac_pci_ctl_info *)0;
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pvt = edac_align_ptr(&pci[1], sz_pvt);
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size = ((unsigned long)pvt) + sz_pvt;
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if ((pci = kzalloc(size, GFP_KERNEL)) == NULL)
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return NULL;
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pvt = sz_pvt ? ((char *)pci) + ((unsigned long)pvt) : NULL;
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pci->pvt_info = pvt;
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pci->op_state = OP_ALLOC;
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snprintf(pci->name, strlen(edac_pci_name)+1, "%s", edac_pci_name);
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return pci;
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}
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EXPORT_SYMBOL_GPL(edac_pci_alloc_ctl_info);
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/*
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* edac_pci_free_ctl_info()
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* frees the memory allocated by edac_pci_alloc_ctl_info() function
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*/
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void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci)
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{
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kfree(pci);
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}
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EXPORT_SYMBOL_GPL(edac_pci_free_ctl_info);
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/*
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* find_edac_pci_by_dev()
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* scans the edac_pci list for a specific 'struct device *'
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*/
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static struct edac_pci_ctl_info * find_edac_pci_by_dev(struct device *dev)
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{
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struct edac_pci_ctl_info *pci;
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struct list_head *item;
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debugf3("%s()\n", __func__);
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list_for_each(item, &edac_pci_list) {
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pci = list_entry(item, struct edac_pci_ctl_info, link);
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if (pci->dev == dev)
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return pci;
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}
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return NULL;
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}
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/*
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* add_edac_pci_to_global_list
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* Before calling this function, caller must assign a unique value to
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* edac_dev->pci_idx.
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* Return:
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* 0 on success
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* 1 on failure
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*/
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static int add_edac_pci_to_global_list(struct edac_pci_ctl_info *pci)
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{
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struct list_head *item, *insert_before;
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struct edac_pci_ctl_info *rover;
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insert_before = &edac_pci_list;
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/* Determine if already on the list */
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if (unlikely((rover = find_edac_pci_by_dev(pci->dev)) != NULL))
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goto fail0;
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/* Insert in ascending order by 'pci_idx', so find position */
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list_for_each(item, &edac_pci_list) {
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rover = list_entry(item, struct edac_pci_ctl_info, link);
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if (rover->pci_idx >= pci->pci_idx) {
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if (unlikely(rover->pci_idx == pci->pci_idx))
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goto fail1;
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insert_before = item;
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break;
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}
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}
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list_add_tail_rcu(&pci->link, insert_before);
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return 0;
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fail0:
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edac_printk(KERN_WARNING, EDAC_PCI,
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"%s (%s) %s %s already assigned %d\n",
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rover->dev->bus_id, dev_name(rover),
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rover->mod_name, rover->ctl_name, rover->pci_idx);
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return 1;
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fail1:
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edac_printk(KERN_WARNING, EDAC_PCI,
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"but in low-level driver: attempt to assign\n"
|
||||
"\tduplicate pci_idx %d in %s()\n", rover->pci_idx, __func__);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* complete_edac_pci_list_del
|
||||
*/
|
||||
static void complete_edac_pci_list_del(struct rcu_head *head)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci;
|
||||
|
||||
pci = container_of(head, struct edac_pci_ctl_info, rcu);
|
||||
INIT_LIST_HEAD(&pci->link);
|
||||
complete(&pci->complete);
|
||||
}
|
||||
|
||||
/*
|
||||
* del_edac_pci_from_global_list
|
||||
*/
|
||||
static void del_edac_pci_from_global_list(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
list_del_rcu(&pci->link);
|
||||
init_completion(&pci->complete);
|
||||
call_rcu(&pci->rcu, complete_edac_pci_list_del);
|
||||
wait_for_completion(&pci->complete);
|
||||
}
|
||||
|
||||
/*
|
||||
* edac_pci_find()
|
||||
* Search for an edac_pci_ctl_info structure whose index is 'idx'
|
||||
*
|
||||
* If found, return a pointer to the structure
|
||||
* Else return NULL.
|
||||
*
|
||||
* Caller must hold pci_ctls_mutex.
|
||||
*/
|
||||
struct edac_pci_ctl_info * edac_pci_find(int idx)
|
||||
{
|
||||
struct list_head *item;
|
||||
struct edac_pci_ctl_info *pci;
|
||||
|
||||
/* Iterage over list, looking for exact match of ID */
|
||||
list_for_each(item, &edac_pci_list) {
|
||||
pci = list_entry(item, struct edac_pci_ctl_info, link);
|
||||
|
||||
if (pci->pci_idx >= idx) {
|
||||
if (pci->pci_idx == idx)
|
||||
return pci;
|
||||
|
||||
/* not on list, so terminate early */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_find);
|
||||
|
||||
/*
|
||||
* edac_pci_workq_function()
|
||||
* performs the operation scheduled by a workq request
|
||||
*/
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
|
||||
static void edac_pci_workq_function(struct work_struct *work_req)
|
||||
{
|
||||
struct delayed_work *d_work = (struct delayed_work *)work_req;
|
||||
struct edac_pci_ctl_info *pci = to_edac_pci_ctl_work(d_work);
|
||||
#else
|
||||
static void edac_pci_workq_function(void *ptr)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci = ptr;
|
||||
#endif
|
||||
|
||||
edac_lock_pci_list();
|
||||
|
||||
if ((pci->op_state == OP_RUNNING_POLL) &&
|
||||
(pci->edac_check != NULL) &&
|
||||
(pci->check_parity_error))
|
||||
pci->edac_check(pci);
|
||||
|
||||
edac_unlock_pci_list();
|
||||
|
||||
/* Reschedule */
|
||||
queue_delayed_work(edac_workqueue, &pci->work, pci->delay);
|
||||
}
|
||||
|
||||
/*
|
||||
* edac_pci_workq_setup()
|
||||
* initialize a workq item for this edac_pci instance
|
||||
* passing in the new delay period in msec
|
||||
*/
|
||||
static void edac_pci_workq_setup(struct edac_pci_ctl_info *pci,
|
||||
unsigned int msec)
|
||||
{
|
||||
debugf0("%s()\n", __func__);
|
||||
|
||||
pci->poll_msec = msec;
|
||||
edac_calc_delay(pci);
|
||||
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
|
||||
INIT_DELAYED_WORK(&pci->work, edac_pci_workq_function);
|
||||
#else
|
||||
INIT_WORK(&pci->work, edac_pci_workq_function, pci);
|
||||
#endif
|
||||
queue_delayed_work(edac_workqueue, &pci->work, pci->delay);
|
||||
}
|
||||
|
||||
/*
|
||||
* edac_pci_workq_teardown()
|
||||
* stop the workq processing on this edac_pci instance
|
||||
*/
|
||||
static void edac_pci_workq_teardown(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
int status;
|
||||
|
||||
status = cancel_delayed_work(&pci->work);
|
||||
if (status == 0)
|
||||
flush_workqueue(edac_workqueue);
|
||||
}
|
||||
|
||||
/*
|
||||
* edac_pci_reset_delay_period
|
||||
*/
|
||||
void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
|
||||
unsigned long value)
|
||||
{
|
||||
edac_lock_pci_list();
|
||||
|
||||
edac_pci_workq_teardown(pci);
|
||||
|
||||
edac_pci_workq_setup(pci, value);
|
||||
|
||||
edac_unlock_pci_list();
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
|
||||
|
||||
/*
|
||||
* edac_pci_add_device: Insert the 'edac_dev' structure into the
|
||||
* edac_pci global list and create sysfs entries associated with
|
||||
* edac_pci structure.
|
||||
* @pci: pointer to the edac_device structure to be added to the list
|
||||
* @edac_idx: A unique numeric identifier to be assigned to the
|
||||
* 'edac_pci' structure.
|
||||
*
|
||||
* Return:
|
||||
* 0 Success
|
||||
* !0 Failure
|
||||
*/
|
||||
int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx)
|
||||
{
|
||||
debugf0("%s()\n", __func__);
|
||||
|
||||
pci->pci_idx = edac_idx;
|
||||
|
||||
edac_lock_pci_list();
|
||||
|
||||
if (add_edac_pci_to_global_list(pci))
|
||||
goto fail0;
|
||||
|
||||
pci->start_time = jiffies;
|
||||
|
||||
if (edac_pci_create_sysfs(pci)) {
|
||||
edac_pci_printk(pci, KERN_WARNING,
|
||||
"failed to create sysfs pci\n");
|
||||
goto fail1;
|
||||
}
|
||||
|
||||
if (pci->edac_check != NULL) {
|
||||
pci->op_state = OP_RUNNING_POLL;
|
||||
|
||||
edac_pci_workq_setup(pci, 1000);
|
||||
} else {
|
||||
pci->op_state = OP_RUNNING_INTERRUPT;
|
||||
}
|
||||
|
||||
edac_pci_printk(pci, KERN_INFO,
|
||||
"Giving out device to module '%s' controller '%s':"
|
||||
" DEV '%s' (%s)\n",
|
||||
pci->mod_name,
|
||||
pci->ctl_name,
|
||||
dev_name(pci),
|
||||
edac_op_state_toString(pci->op_state));
|
||||
|
||||
edac_unlock_pci_list();
|
||||
return 0;
|
||||
|
||||
fail1:
|
||||
del_edac_pci_from_global_list(pci);
|
||||
fail0:
|
||||
edac_unlock_pci_list();
|
||||
return 1;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_add_device);
|
||||
|
||||
/*
|
||||
* edac_pci_del_device()
|
||||
* Remove sysfs entries for specified edac_pci structure and
|
||||
* then remove edac_pci structure from global list
|
||||
*
|
||||
* @dev:
|
||||
* Pointer to 'struct device' representing edac_pci structure
|
||||
* to remove
|
||||
*
|
||||
* Return:
|
||||
* Pointer to removed edac_pci structure,
|
||||
* or NULL if device not found
|
||||
*/
|
||||
struct edac_pci_ctl_info * edac_pci_del_device(struct device *dev)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci;
|
||||
|
||||
debugf0("%s()\n", __func__);
|
||||
|
||||
edac_lock_pci_list();
|
||||
|
||||
if ((pci = find_edac_pci_by_dev(dev)) == NULL) {
|
||||
edac_unlock_pci_list();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pci->op_state = OP_OFFLINE;
|
||||
|
||||
edac_pci_workq_teardown(pci);
|
||||
|
||||
edac_pci_remove_sysfs(pci);
|
||||
|
||||
del_edac_pci_from_global_list(pci);
|
||||
|
||||
edac_unlock_pci_list();
|
||||
|
||||
edac_printk(KERN_INFO, EDAC_PCI,
|
||||
"Removed device %d for %s %s: DEV %s\n",
|
||||
pci->pci_idx,
|
||||
pci->mod_name,
|
||||
pci->ctl_name,
|
||||
dev_name(pci));
|
||||
|
||||
return pci;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_del_device);
|
||||
|
||||
static inline int edac_pci_get_log_pe(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
return pci->log_parity_error;
|
||||
}
|
||||
|
||||
static inline int edac_pci_get_panic_on_pe(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
return pci->panic_on_pe;
|
||||
}
|
||||
|
||||
void edac_pci_generic_check(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
edac_pci_do_parity_check();
|
||||
}
|
||||
|
||||
static int edac_pci_idx = 0;
|
||||
#define EDAC_PCI_GENCTL_NAME "EDAC PCI controller"
|
||||
|
||||
struct edac_pci_gen_data {
|
||||
int edac_idx;
|
||||
};
|
||||
|
||||
struct edac_pci_ctl_info *
|
||||
edac_pci_create_generic_ctl(struct device *dev, const char *mod_name)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci;
|
||||
struct edac_pci_gen_data *pdata;
|
||||
|
||||
pci = edac_pci_alloc_ctl_info(sizeof(*pdata), EDAC_PCI_GENCTL_NAME);
|
||||
if (!pci)
|
||||
return NULL;
|
||||
|
||||
pdata = pci->pvt_info;
|
||||
pci->dev = dev;
|
||||
dev_set_drvdata(pci->dev, pci);
|
||||
pci->dev_name = pci_name(to_pci_dev(dev));
|
||||
|
||||
pci->mod_name = mod_name;
|
||||
pci->ctl_name = EDAC_PCI_GENCTL_NAME;
|
||||
pci->edac_check = edac_pci_generic_check;
|
||||
|
||||
pdata->edac_idx = edac_pci_idx++;
|
||||
|
||||
if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
|
||||
debugf3("%s(): failed edac_pci_add_device()\n", __func__);
|
||||
edac_pci_free_ctl_info(pci);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return pci;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_create_generic_ctl);
|
||||
|
||||
void edac_pci_release_generic_ctl(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
edac_pci_del_device(pci->dev);
|
||||
edac_pci_free_ctl_info(pci);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_release_generic_ctl);
|
||||
@ -15,13 +15,142 @@
|
||||
|
||||
|
||||
#ifdef CONFIG_PCI
|
||||
static int check_pci_parity = 0; /* default YES check PCI parity */
|
||||
static int panic_on_pci_parity; /* default no panic on PCI Parity */
|
||||
|
||||
#define EDAC_PCI_SYMLINK "device"
|
||||
|
||||
static int check_pci_errors = 0; /* default YES check PCI parity */
|
||||
static int panic_on_pci_parity = 0; /* default no panic on PCI Parity */
|
||||
static int log_pci_errs = 1;
|
||||
static atomic_t pci_parity_count = ATOMIC_INIT(0);
|
||||
static atomic_t pci_nonparity_count = ATOMIC_INIT(0);
|
||||
|
||||
static struct kobject edac_pci_kobj; /* /sys/devices/system/edac/pci */
|
||||
static struct completion edac_pci_kobj_complete;
|
||||
static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0);
|
||||
|
||||
/**************************** EDAC PCI sysfs instance *******************/
|
||||
static ssize_t instance_pe_count_show(struct edac_pci_ctl_info *pci, char *data)
|
||||
{
|
||||
return sprintf(data,"%u\n", atomic_read(&pci->counters.pe_count));
|
||||
}
|
||||
|
||||
static ssize_t instance_npe_count_show(struct edac_pci_ctl_info *pci,
|
||||
char *data)
|
||||
{
|
||||
return sprintf(data,"%u\n", atomic_read(&pci->counters.npe_count));
|
||||
}
|
||||
|
||||
#define to_instance(k) container_of(k, struct edac_pci_ctl_info, kobj)
|
||||
#define to_instance_attr(a) container_of(a, struct instance_attribute, attr)
|
||||
|
||||
/* DEVICE instance kobject release() function */
|
||||
static void edac_pci_instance_release(struct kobject *kobj)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci;
|
||||
|
||||
debugf1("%s()\n", __func__);
|
||||
|
||||
pci = to_instance(kobj);
|
||||
complete(&pci->kobj_complete);
|
||||
}
|
||||
|
||||
/* instance specific attribute structure */
|
||||
struct instance_attribute {
|
||||
struct attribute attr;
|
||||
ssize_t (*show)(struct edac_pci_ctl_info *, char *);
|
||||
ssize_t (*store)(struct edac_pci_ctl_info *, const char *, size_t);
|
||||
};
|
||||
|
||||
/* Function to 'show' fields from the edac_pci 'instance' structure */
|
||||
static ssize_t edac_pci_instance_show(struct kobject *kobj,
|
||||
struct attribute *attr,
|
||||
char *buffer)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci = to_instance(kobj);
|
||||
struct instance_attribute *instance_attr = to_instance_attr(attr);
|
||||
|
||||
if (instance_attr->show)
|
||||
return instance_attr->show(pci, buffer);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
|
||||
/* Function to 'store' fields into the edac_pci 'instance' structure */
|
||||
static ssize_t edac_pci_instance_store(struct kobject *kobj,
|
||||
struct attribute *attr,
|
||||
const char *buffer, size_t count)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci = to_instance(kobj);
|
||||
struct instance_attribute *instance_attr = to_instance_attr(attr);
|
||||
|
||||
if (instance_attr->store)
|
||||
return instance_attr->store(pci, buffer, count);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
static struct sysfs_ops pci_instance_ops = {
|
||||
.show = edac_pci_instance_show,
|
||||
.store = edac_pci_instance_store
|
||||
};
|
||||
|
||||
#define INSTANCE_ATTR(_name, _mode, _show, _store) \
|
||||
static struct instance_attribute attr_instance_##_name = { \
|
||||
.attr = {.name = __stringify(_name), .mode = _mode }, \
|
||||
.show = _show, \
|
||||
.store = _store, \
|
||||
};
|
||||
|
||||
INSTANCE_ATTR(pe_count, S_IRUGO, instance_pe_count_show, NULL);
|
||||
INSTANCE_ATTR(npe_count, S_IRUGO, instance_npe_count_show, NULL);
|
||||
|
||||
/* pci instance attributes */
|
||||
static struct instance_attribute *pci_instance_attr[] = {
|
||||
&attr_instance_pe_count,
|
||||
&attr_instance_npe_count,
|
||||
NULL
|
||||
};
|
||||
|
||||
/* the ktype for pci instance */
|
||||
static struct kobj_type ktype_pci_instance = {
|
||||
.release = edac_pci_instance_release,
|
||||
.sysfs_ops = &pci_instance_ops,
|
||||
.default_attrs = (struct attribute **)pci_instance_attr,
|
||||
};
|
||||
|
||||
static int edac_pci_create_instance_kobj(struct edac_pci_ctl_info *pci, int idx)
|
||||
{
|
||||
int err;
|
||||
|
||||
pci->kobj.parent = &edac_pci_kobj;
|
||||
pci->kobj.ktype = &ktype_pci_instance;
|
||||
|
||||
err = kobject_set_name(&pci->kobj, "pci%d", idx);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = kobject_register(&pci->kobj);
|
||||
if (err != 0) {
|
||||
debugf2("%s() failed to register instance pci%d\n",
|
||||
__func__, idx);
|
||||
return err;
|
||||
}
|
||||
|
||||
debugf1("%s() Register instance 'pci%d' kobject\n", __func__, idx);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
edac_pci_delete_instance_kobj(struct edac_pci_ctl_info *pci, int idx)
|
||||
{
|
||||
init_completion(&pci->kobj_complete);
|
||||
kobject_unregister(&pci->kobj);
|
||||
wait_for_completion(&pci->kobj_complete);
|
||||
}
|
||||
|
||||
/***************************** EDAC PCI sysfs root **********************/
|
||||
#define to_edacpci(k) container_of(k, struct edac_pci_ctl_info, kobj)
|
||||
#define to_edacpci_attr(a) container_of(a, struct edac_pci_attr, attr)
|
||||
|
||||
static ssize_t edac_pci_int_show(void *ptr, char *buffer)
|
||||
{
|
||||
@ -91,25 +220,34 @@ static struct edac_pci_dev_attribute edac_pci_attr_##_name = { \
|
||||
};
|
||||
|
||||
/* PCI Parity control files */
|
||||
EDAC_PCI_ATTR(check_pci_parity, S_IRUGO|S_IWUSR, edac_pci_int_show,
|
||||
EDAC_PCI_ATTR(check_pci_errors, S_IRUGO|S_IWUSR, edac_pci_int_show,
|
||||
edac_pci_int_store);
|
||||
EDAC_PCI_ATTR(log_pci_errs, S_IRUGO|S_IWUSR, edac_pci_int_show,
|
||||
edac_pci_int_store);
|
||||
EDAC_PCI_ATTR(panic_on_pci_parity, S_IRUGO|S_IWUSR, edac_pci_int_show,
|
||||
edac_pci_int_store);
|
||||
EDAC_PCI_ATTR(pci_parity_count, S_IRUGO, edac_pci_int_show, NULL);
|
||||
EDAC_PCI_ATTR(pci_nonparity_count, S_IRUGO, edac_pci_int_show, NULL);
|
||||
|
||||
/* Base Attributes of the memory ECC object */
|
||||
static struct edac_pci_dev_attribute *edac_pci_attr[] = {
|
||||
&edac_pci_attr_check_pci_parity,
|
||||
&edac_pci_attr_check_pci_errors,
|
||||
&edac_pci_attr_log_pci_errs,
|
||||
&edac_pci_attr_panic_on_pci_parity,
|
||||
&edac_pci_attr_pci_parity_count,
|
||||
&edac_pci_attr_pci_nonparity_count,
|
||||
NULL,
|
||||
};
|
||||
|
||||
/* No memory to release */
|
||||
static void edac_pci_release(struct kobject *kobj)
|
||||
{
|
||||
struct edac_pci_ctl_info *pci;
|
||||
|
||||
pci = to_edacpci(kobj);
|
||||
|
||||
debugf1("%s()\n", __func__);
|
||||
complete(&edac_pci_kobj_complete);
|
||||
complete(&pci->kobj_complete);
|
||||
}
|
||||
|
||||
static struct kobj_type ktype_edac_pci = {
|
||||
@ -124,7 +262,7 @@ static struct kobj_type ktype_edac_pci = {
|
||||
* setup the sysfs for EDAC PCI attributes
|
||||
* assumes edac_class has already been initialized
|
||||
*/
|
||||
int edac_sysfs_pci_setup(void)
|
||||
int edac_pci_register_main_kobj(void)
|
||||
{
|
||||
int err;
|
||||
struct sysdev_class *edac_class;
|
||||
@ -132,32 +270,39 @@ int edac_sysfs_pci_setup(void)
|
||||
debugf1("%s()\n", __func__);
|
||||
|
||||
edac_class = edac_get_edac_class();
|
||||
|
||||
memset(&edac_pci_kobj, 0, sizeof(edac_pci_kobj));
|
||||
edac_pci_kobj.parent = &edac_class->kset.kobj;
|
||||
edac_pci_kobj.ktype = &ktype_edac_pci;
|
||||
err = kobject_set_name(&edac_pci_kobj, "pci");
|
||||
|
||||
if (!err) {
|
||||
/* Instanstiate the pci object */
|
||||
/* FIXME: maybe new sysdev_create_subdir() */
|
||||
err = kobject_register(&edac_pci_kobj);
|
||||
|
||||
if (err)
|
||||
debugf1("Failed to register '.../edac/pci'\n");
|
||||
else
|
||||
debugf1("Registered '.../edac/pci' kobject\n");
|
||||
if (edac_class == NULL) {
|
||||
debugf1("%s() no edac_class\n", __func__);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return err;
|
||||
edac_pci_kobj.ktype = &ktype_edac_pci;
|
||||
|
||||
edac_pci_kobj.parent = &edac_class->kset.kobj;
|
||||
|
||||
err = kobject_set_name(&edac_pci_kobj, "pci");
|
||||
if(err)
|
||||
return err;
|
||||
|
||||
/* Instanstiate the pci object */
|
||||
/* FIXME: maybe new sysdev_create_subdir() */
|
||||
err = kobject_register(&edac_pci_kobj);
|
||||
|
||||
if (err) {
|
||||
debugf1("Failed to register '.../edac/pci'\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
debugf1("Registered '.../edac/pci' kobject\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* edac_sysfs_pci_teardown
|
||||
* edac_pci_unregister_main_kobj()
|
||||
*
|
||||
* perform the sysfs teardown for the PCI attributes
|
||||
*/
|
||||
void edac_sysfs_pci_teardown(void)
|
||||
void edac_pci_unregister_main_kobj(void)
|
||||
{
|
||||
debugf0("%s()\n", __func__);
|
||||
init_completion(&edac_pci_kobj_complete);
|
||||
@ -165,7 +310,53 @@ void edac_sysfs_pci_teardown(void)
|
||||
wait_for_completion(&edac_pci_kobj_complete);
|
||||
}
|
||||
|
||||
int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
int err;
|
||||
struct kobject *edac_kobj = &pci->kobj;
|
||||
|
||||
if (atomic_inc_return(&edac_pci_sysfs_refcount) == 1) {
|
||||
err = edac_pci_register_main_kobj();
|
||||
if (err) {
|
||||
atomic_dec(&edac_pci_sysfs_refcount);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
err = edac_pci_create_instance_kobj(pci, pci->pci_idx);
|
||||
if (err) {
|
||||
if (atomic_dec_return(&edac_pci_sysfs_refcount) == 0)
|
||||
edac_pci_unregister_main_kobj();
|
||||
}
|
||||
|
||||
|
||||
debugf0("%s() idx=%d\n", __func__, pci->pci_idx);
|
||||
|
||||
err = sysfs_create_link(edac_kobj,
|
||||
&pci->dev->kobj,
|
||||
EDAC_PCI_SYMLINK);
|
||||
if (err) {
|
||||
debugf0("%s() sysfs_create_link() returned err= %d\n",
|
||||
__func__, err);
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci)
|
||||
{
|
||||
debugf0("%s()\n", __func__);
|
||||
|
||||
edac_pci_delete_instance_kobj(pci, pci->pci_idx);
|
||||
|
||||
sysfs_remove_link(&pci->kobj, EDAC_PCI_SYMLINK);
|
||||
|
||||
if (atomic_dec_return(&edac_pci_sysfs_refcount) == 0)
|
||||
edac_pci_unregister_main_kobj();
|
||||
}
|
||||
|
||||
/************************ PCI error handling *************************/
|
||||
static u16 get_pci_parity_status(struct pci_dev *dev, int secondary)
|
||||
{
|
||||
int where;
|
||||
@ -231,10 +422,12 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
|
||||
|
||||
/* check the status reg for errors */
|
||||
if (status) {
|
||||
if (status & (PCI_STATUS_SIG_SYSTEM_ERROR))
|
||||
if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) {
|
||||
edac_printk(KERN_CRIT, EDAC_PCI,
|
||||
"Signaled System Error on %s\n",
|
||||
pci_name(dev));
|
||||
atomic_inc(&pci_nonparity_count);
|
||||
}
|
||||
|
||||
if (status & (PCI_STATUS_PARITY)) {
|
||||
edac_printk(KERN_CRIT, EDAC_PCI,
|
||||
@ -267,10 +460,12 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
|
||||
|
||||
/* check the secondary status reg for errors */
|
||||
if (status) {
|
||||
if (status & (PCI_STATUS_SIG_SYSTEM_ERROR))
|
||||
if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) {
|
||||
edac_printk(KERN_CRIT, EDAC_PCI, "Bridge "
|
||||
"Signaled System Error on %s\n",
|
||||
pci_name(dev));
|
||||
atomic_inc(&pci_nonparity_count);
|
||||
}
|
||||
|
||||
if (status & (PCI_STATUS_PARITY)) {
|
||||
edac_printk(KERN_CRIT, EDAC_PCI, "Bridge "
|
||||
@ -321,7 +516,7 @@ void edac_pci_do_parity_check(void)
|
||||
|
||||
debugf3("%s()\n", __func__);
|
||||
|
||||
if (!check_pci_parity)
|
||||
if (!check_pci_errors)
|
||||
return;
|
||||
|
||||
before_count = atomic_read(&pci_parity_count);
|
||||
@ -348,13 +543,49 @@ void edac_pci_clear_parity_errors(void)
|
||||
*/
|
||||
edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear);
|
||||
}
|
||||
void edac_pci_handle_pe(struct edac_pci_ctl_info *pci, const char *msg)
|
||||
{
|
||||
|
||||
/* global PE counter incremented by edac_pci_do_parity_check() */
|
||||
atomic_inc(&pci->counters.pe_count);
|
||||
|
||||
if (log_pci_errs)
|
||||
edac_pci_printk(pci, KERN_WARNING,
|
||||
"Parity Error ctl: %s %d: %s\n",
|
||||
pci->ctl_name, pci->pci_idx, msg);
|
||||
|
||||
/*
|
||||
* poke all PCI devices and see which one is the troublemaker
|
||||
* panic() is called if set
|
||||
*/
|
||||
edac_pci_do_parity_check();
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_handle_pe);
|
||||
|
||||
void edac_pci_handle_npe(struct edac_pci_ctl_info *pci, const char *msg)
|
||||
{
|
||||
|
||||
/* global NPE counter incremented by edac_pci_do_parity_check() */
|
||||
atomic_inc(&pci->counters.npe_count);
|
||||
|
||||
if (log_pci_errs)
|
||||
edac_pci_printk(pci, KERN_WARNING,
|
||||
"Non-Parity Error ctl: %s %d: %s\n",
|
||||
pci->ctl_name, pci->pci_idx, msg);
|
||||
|
||||
/*
|
||||
* poke all PCI devices and see which one is the troublemaker
|
||||
* panic() is called if set
|
||||
*/
|
||||
edac_pci_do_parity_check();
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(edac_pci_handle_npe);
|
||||
|
||||
/*
|
||||
* Define the PCI parameter to the module
|
||||
*/
|
||||
module_param(check_pci_parity, int, 0644);
|
||||
MODULE_PARM_DESC(check_pci_parity, "Check for PCI bus parity errors: 0=off 1=on");
|
||||
module_param(check_pci_errors, int, 0644);
|
||||
MODULE_PARM_DESC(check_pci_errors, "Check for PCI bus parity errors: 0=off 1=on");
|
||||
module_param(panic_on_pci_parity, int, 0644);
|
||||
MODULE_PARM_DESC(panic_on_pci_parity, "Panic on PCI Bus Parity error: 0=off 1=on");
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user