From: Sebastian Ott Date: Tue, 16 Apr 2013 12:11:14 +0000 (+0200) Subject: s390/pci: debug device states X-Git-Tag: firefly_0821_release~3680^2~683^2~26 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a2ab833360abbed3321fd694b69a5a32ee15785f;p=firefly-linux-kernel-4.4.55.git s390/pci: debug device states Use the debugfs to keep track of a pci function's status changes. Reviewed-by: Gerald Schaefer Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- diff --git a/arch/s390/include/asm/pci_debug.h b/arch/s390/include/asm/pci_debug.h index 6bbec4265b6e..1ca5d1047c71 100644 --- a/arch/s390/include/asm/pci_debug.h +++ b/arch/s390/include/asm/pci_debug.h @@ -7,14 +7,11 @@ extern debug_info_t *pci_debug_msg_id; extern debug_info_t *pci_debug_err_id; #ifdef CONFIG_PCI_DEBUG -#define zpci_dbg(fmt, args...) \ - do { \ - if (pci_debug_msg_id->level >= 2) \ - debug_sprintf_event(pci_debug_msg_id, 2, fmt , ## args);\ - } while (0) +#define zpci_dbg(imp, fmt, args...) \ + debug_sprintf_event(pci_debug_msg_id, imp, fmt, ##args) #else /* !CONFIG_PCI_DEBUG */ -#define zpci_dbg(fmt, args...) do { } while (0) +#define zpci_dbg(imp, fmt, args...) do { } while (0) #endif #define zpci_err(text...) \ diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index fddf847e71ac..20823f022925 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -99,9 +99,6 @@ static int __read_mostly aisb_max; static struct kmem_cache *zdev_irq_cache; static struct kmem_cache *zdev_fmb_cache; -debug_info_t *pci_debug_msg_id; -debug_info_t *pci_debug_err_id; - static inline int irq_to_msi_nr(unsigned int irq) { return irq & ZPCI_MSI_MASK; diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index f339fe2feb15..bd34359d1546 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -13,6 +13,7 @@ #include #include #include +#include #include /* @@ -144,6 +145,7 @@ int clp_add_pci_device(u32 fid, u32 fh, int configured) struct zpci_dev *zdev; int rc; + zpci_dbg(3, "add fid:%x, fh:%x, c:%d\n", fid, fh, configured); zdev = zpci_alloc_device(); if (IS_ERR(zdev)) return PTR_ERR(zdev); @@ -204,8 +206,8 @@ static int clp_set_pci_fn(u32 *fh, u8 nr_dma_as, u8 command) if (!rc && rrb->response.hdr.rsp == CLP_RC_OK) *fh = rrb->response.fh; else { - pr_err("Set PCI FN failed with response: %x cc: %d\n", - rrb->response.hdr.rsp, rc); + zpci_dbg(0, "SPF fh:%x, cc:%d, resp:%x\n", *fh, rc, + rrb->response.hdr.rsp); rc = -EIO; } clp_free_block(rrb); @@ -221,6 +223,8 @@ int clp_enable_fh(struct zpci_dev *zdev, u8 nr_dma_as) if (!rc) /* Success -> store enabled handle in zdev */ zdev->fh = fh; + + zpci_dbg(3, "ena fid:%x, fh:%x, rc:%d\n", zdev->fid, zdev->fh, rc); return rc; } @@ -237,9 +241,8 @@ int clp_disable_fh(struct zpci_dev *zdev) if (!rc) /* Success -> store disabled handle in zdev */ zdev->fh = fh; - else - dev_err(&zdev->pdev->dev, - "Failed to disable fn handle: 0x%x\n", fh); + + zpci_dbg(3, "dis fid:%x, fh:%x, rc:%d\n", zdev->fid, zdev->fh, rc); return rc; } diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c index a5d07bc2a547..771b82359af4 100644 --- a/arch/s390/pci/pci_debug.c +++ b/arch/s390/pci/pci_debug.c @@ -11,12 +11,17 @@ #include #include #include +#include #include #include #include static struct dentry *debugfs_root; +debug_info_t *pci_debug_msg_id; +EXPORT_SYMBOL_GPL(pci_debug_msg_id); +debug_info_t *pci_debug_err_id; +EXPORT_SYMBOL_GPL(pci_debug_err_id); static char *pci_perf_names[] = { /* hardware counters */ @@ -168,7 +173,6 @@ int __init zpci_debug_init(void) return -EINVAL; debug_register_view(pci_debug_msg_id, &debug_sprintf_view); debug_set_level(pci_debug_msg_id, 3); - zpci_dbg("Debug view initialized\n"); /* error log */ pci_debug_err_id = debug_register("pci_error", 2, 1, 16); @@ -176,7 +180,6 @@ int __init zpci_debug_init(void) return -EINVAL; debug_register_view(pci_debug_err_id, &debug_hex_ascii_view); debug_set_level(pci_debug_err_id, 6); - zpci_err("Debug view initialized\n"); debugfs_root = debugfs_create_dir("pci", NULL); return 0; diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index 7db249a25016..6053e7221b51 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #define SLOT_NAME_SIZE 10 @@ -49,6 +50,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot) return -EIO; rc = sclp_pci_configure(slot->zdev->fid); + zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, rc); if (!rc) { slot->zdev->state = ZPCI_FN_STATE_CONFIGURED; /* automatically scan the device after is was configured */ @@ -70,6 +72,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot) * or do we need to trigger that here? */ rc = sclp_pci_deconfigure(slot->zdev->fid); + zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, rc); if (!rc) { /* Fixme: better call List-PCI to find the disabled FH for the FID since the FH should be opaque... */