From d50dbec3ce52e1608636b8a624d087da9ced8cde Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Fri, 23 Oct 2009 12:51:28 +0200 Subject: pcmcia: use dynamic debug instead of custom infrastructure Use the generic "dynamic debug" infrastructure instead of CONIG_PCMCIA_DEBUG in the PCMCIA core (pcmcia.ko and pcmcia_core.ko). To enable debugging, enable CONFIG_DYNAMIC_DEBUG, mount debugfs and $ echo -n 'module pcmcia_core +p' > /sys/kernel/debug/dynamic_debug/control for the complete module "pcmcia_core", for example. For more detailled instructions, please see Documentation/dynamic-debug-howto.txt Signed-off-by: Dominik Brodowski --- drivers/pcmcia/cs.c | 57 ++++++++++++++++++++++------------------------------- 1 file changed, 24 insertions(+), 33 deletions(-) (limited to 'drivers/pcmcia/cs.c') diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index 934d4bee39a0..b0ec9c614ce7 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -61,17 +61,6 @@ INT_MODULE_PARM(unreset_limit, 30); /* unreset_check's */ /* Access speed for attribute memory windows */ INT_MODULE_PARM(cis_speed, 300); /* ns */ -#ifdef CONFIG_PCMCIA_DEBUG -static int pc_debug; - -module_param(pc_debug, int, 0644); - -int cs_debug_level(int level) -{ - return pc_debug > level; -} -#endif - socket_state_t dead_socket = { .csc_mask = SS_DETECT, @@ -182,7 +171,7 @@ int pcmcia_register_socket(struct pcmcia_socket *socket) if (!socket || !socket->ops || !socket->dev.parent || !socket->resource_ops) return -EINVAL; - cs_dbg(socket, 0, "pcmcia_register_socket(0x%p)\n", socket->ops); + dev_dbg(&socket->dev, "pcmcia_register_socket(0x%p)\n", socket->ops); spin_lock_init(&socket->lock); @@ -274,7 +263,7 @@ void pcmcia_unregister_socket(struct pcmcia_socket *socket) if (!socket) return; - cs_dbg(socket, 0, "pcmcia_unregister_socket(0x%p)\n", socket->ops); + dev_dbg(&socket->dev, "pcmcia_unregister_socket(0x%p)\n", socket->ops); if (socket->thread) kthread_stop(socket->thread); @@ -327,7 +316,7 @@ static int send_event(struct pcmcia_socket *s, event_t event, int priority) if (s->state & SOCKET_CARDBUS) return 0; - cs_dbg(s, 1, "send_event(event %d, pri %d, callback 0x%p)\n", + dev_dbg(&s->dev, "send_event(event %d, pri %d, callback 0x%p)\n", event, priority, s->callback); if (!s->callback) @@ -344,7 +333,7 @@ static int send_event(struct pcmcia_socket *s, event_t event, int priority) static void socket_remove_drivers(struct pcmcia_socket *skt) { - cs_dbg(skt, 4, "remove_drivers\n"); + dev_dbg(&skt->dev, "remove_drivers\n"); send_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); } @@ -353,7 +342,7 @@ static int socket_reset(struct pcmcia_socket *skt) { int status, i; - cs_dbg(skt, 4, "reset\n"); + dev_dbg(&skt->dev, "reset\n"); skt->socket.flags |= SS_OUTPUT_ENA | SS_RESET; skt->ops->set_socket(skt, &skt->socket); @@ -375,7 +364,7 @@ static int socket_reset(struct pcmcia_socket *skt) msleep(unreset_check * 10); } - cs_err(skt, "time out after reset.\n"); + dev_printk(KERN_ERR, &skt->dev, "time out after reset.\n"); return -ETIMEDOUT; } @@ -389,7 +378,7 @@ static void socket_shutdown(struct pcmcia_socket *s) { int status; - cs_dbg(s, 4, "shutdown\n"); + dev_dbg(&s->dev, "shutdown\n"); socket_remove_drivers(s); s->state &= SOCKET_INUSE | SOCKET_PRESENT; @@ -424,7 +413,7 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay) { int status, i; - cs_dbg(skt, 4, "setup\n"); + dev_dbg(&skt->dev, "setup\n"); skt->ops->get_status(skt, &status); if (!(status & SS_DETECT)) @@ -444,13 +433,15 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay) } if (status & SS_PENDING) { - cs_err(skt, "voltage interrogation timed out.\n"); + dev_printk(KERN_ERR, &skt->dev, + "voltage interrogation timed out.\n"); return -ETIMEDOUT; } if (status & SS_CARDBUS) { if (!(skt->features & SS_CAP_CARDBUS)) { - cs_err(skt, "cardbus cards are not supported.\n"); + dev_printk(KERN_ERR, &skt->dev, + "cardbus cards are not supported.\n"); return -EINVAL; } skt->state |= SOCKET_CARDBUS; @@ -464,7 +455,7 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay) else if (!(status & SS_XVCARD)) skt->socket.Vcc = skt->socket.Vpp = 50; else { - cs_err(skt, "unsupported voltage key.\n"); + dev_printk(KERN_ERR, &skt->dev, "unsupported voltage key.\n"); return -EIO; } @@ -481,7 +472,7 @@ static int socket_setup(struct pcmcia_socket *skt, int initial_delay) skt->ops->get_status(skt, &status); if (!(status & SS_POWERON)) { - cs_err(skt, "unable to apply power.\n"); + dev_printk(KERN_ERR, &skt->dev, "unable to apply power.\n"); return -EIO; } @@ -501,7 +492,7 @@ static int socket_insert(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 4, "insert\n"); + dev_dbg(&skt->dev, "insert\n"); if (!cs_socket_get(skt)) return -ENODEV; @@ -521,7 +512,7 @@ static int socket_insert(struct pcmcia_socket *skt) skt->state |= SOCKET_CARDBUS_CONFIG; } #endif - cs_dbg(skt, 4, "insert done\n"); + dev_dbg(&skt->dev, "insert done\n"); send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); } else { @@ -573,7 +564,7 @@ static int socket_resume(struct pcmcia_socket *skt) * FIXME: need a better check here for cardbus cards. */ if (verify_cis_cache(skt) != 0) { - cs_dbg(skt, 4, "cis mismatch - different card\n"); + dev_dbg(&skt->dev, "cis mismatch - different card\n"); socket_remove_drivers(skt); destroy_cis_cache(skt); /* @@ -584,7 +575,7 @@ static int socket_resume(struct pcmcia_socket *skt) msleep(200); send_event(skt, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW); } else { - cs_dbg(skt, 4, "cis matches cache\n"); + dev_dbg(&skt->dev, "cis matches cache\n"); send_event(skt, CS_EVENT_PM_RESUME, CS_EVENT_PRI_LOW); } } else { @@ -706,7 +697,7 @@ static int pccardd(void *__skt) void pcmcia_parse_events(struct pcmcia_socket *s, u_int events) { unsigned long flags; - cs_dbg(s, 4, "parse_events: events %08x\n", events); + dev_dbg(&s->dev, "parse_events: events %08x\n", events); if (s->thread) { spin_lock_irqsave(&s->thread_lock, flags); s->thread_events |= events; @@ -756,7 +747,7 @@ int pcmcia_reset_card(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 1, "resetting socket\n"); + dev_dbg(&skt->dev, "resetting socket\n"); mutex_lock(&skt->skt_mutex); do { @@ -801,7 +792,7 @@ int pcmcia_suspend_card(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 1, "suspending socket\n"); + dev_dbg(&skt->dev, "suspending socket\n"); mutex_lock(&skt->skt_mutex); do { @@ -831,7 +822,7 @@ int pcmcia_resume_card(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 1, "waking up socket\n"); + dev_dbg(&skt->dev, "waking up socket\n"); mutex_lock(&skt->skt_mutex); do { @@ -859,7 +850,7 @@ int pcmcia_eject_card(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 1, "user eject request\n"); + dev_dbg(&skt->dev, "user eject request\n"); mutex_lock(&skt->skt_mutex); do { @@ -888,7 +879,7 @@ int pcmcia_insert_card(struct pcmcia_socket *skt) { int ret; - cs_dbg(skt, 1, "user insert request\n"); + dev_dbg(&skt->dev, "user insert request\n"); mutex_lock(&skt->skt_mutex); do { -- cgit v1.2.3 From 6d9a299f675b176e2f81e1f6d5a361a1173971ea Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sat, 24 Oct 2009 12:20:18 +0200 Subject: pcmcia: extend error reporting and debug messages in core Add a few more error and debug messages to the PCMCIA core. Signed-off-by: Dominik Brodowski --- drivers/pcmcia/cs.c | 3 +++ drivers/pcmcia/pcmcia_resource.c | 53 ++++++++++++++++++++++++++++++---------- 2 files changed, 43 insertions(+), 13 deletions(-) (limited to 'drivers/pcmcia/cs.c') diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index b0ec9c614ce7..b229f6d9e443 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -752,14 +752,17 @@ int pcmcia_reset_card(struct pcmcia_socket *skt) mutex_lock(&skt->skt_mutex); do { if (!(skt->state & SOCKET_PRESENT)) { + dev_dbg(&skt->dev, "can't reset, not present\n"); ret = -ENODEV; break; } if (skt->state & SOCKET_SUSPEND) { + dev_dbg(&skt->dev, "can't reset, suspended\n"); ret = -EBUSY; break; } if (skt->state & SOCKET_CARDBUS) { + dev_dbg(&skt->dev, "can't reset, is cardbus\n"); ret = -EPERM; break; } diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c index 349bc5662fff..cda48ea9b6fd 100644 --- a/drivers/pcmcia/pcmcia_resource.c +++ b/drivers/pcmcia/pcmcia_resource.c @@ -159,8 +159,10 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, s = p_dev->socket; c = p_dev->function_config; - if (!(c->state & CONFIG_LOCKED)) + if (!(c->state & CONFIG_LOCKED)) { + dev_dbg(&s->dev, "Configuration isnt't locked\n"); return -EACCES; + } addr = (c->ConfigBase + reg->Offset) >> 1; @@ -174,6 +176,7 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, pcmcia_write_cis_mem(s, 1, addr, 1, &val); break; default: + dev_dbg(&s->dev, "Invalid conf register request\n"); return -EINVAL; break; } @@ -264,10 +267,14 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev, s = p_dev->socket; c = p_dev->function_config; - if (!(s->state & SOCKET_PRESENT)) + if (!(s->state & SOCKET_PRESENT)) { + dev_dbg(&s->dev, "No card present\n"); return -ENODEV; - if (!(c->state & CONFIG_LOCKED)) + } + if (!(c->state & CONFIG_LOCKED)) { + dev_dbg(&s->dev, "Configuration isnt't locked\n"); return -EACCES; + } if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { if (mod->Attributes & CONF_ENABLE_IRQ) { @@ -442,8 +449,10 @@ int pcmcia_release_window(window_handle_t win) if ((win == NULL) || (win->magic != WINDOW_MAGIC)) return -EINVAL; s = win->sock; - if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) + if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) { + dev_dbg(&s->dev, "not releasing unknown window\n"); return -EINVAL; + } /* Shut down memory window */ win->ctl.flags &= ~MAP_ACTIVE; @@ -482,8 +491,10 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev, return -EINVAL; } c = p_dev->function_config; - if (c->state & CONFIG_LOCKED) + if (c->state & CONFIG_LOCKED) { + dev_dbg(&s->dev, "Configuration is locked\n"); return -EACCES; + } /* Do power control. We don't allow changes in Vcc. */ s->socket.Vpp = req->Vpp; @@ -595,14 +606,18 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) struct pcmcia_socket *s = p_dev->socket; config_t *c; - if (!(s->state & SOCKET_PRESENT)) + if (!(s->state & SOCKET_PRESENT)) { + dev_dbg(&s->dev, "No card present\n"); return -ENODEV; + } if (!req) return -EINVAL; c = p_dev->function_config; - if (c->state & CONFIG_LOCKED) + if (c->state & CONFIG_LOCKED) { + dev_dbg(&s->dev, "Configuration is locked\n"); return -EACCES; + } if (c->state & CONFIG_IO_REQ) { dev_dbg(&s->dev, "IO already configured\n"); return -EBUSY; @@ -666,11 +681,15 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) int ret = -EINVAL, irq = 0; int type; - if (!(s->state & SOCKET_PRESENT)) + if (!(s->state & SOCKET_PRESENT)) { + dev_dbg(&s->dev, "No card present\n"); return -ENODEV; + } c = p_dev->function_config; - if (c->state & CONFIG_LOCKED) + if (c->state & CONFIG_LOCKED) { + dev_dbg(&s->dev, "Configuration is locked\n"); return -EACCES; + } if (c->state & CONFIG_IRQ_REQ) { dev_dbg(&s->dev, "IRQ already configured\n"); return -EBUSY; @@ -731,8 +750,10 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) #endif /* only assign PCI irq if no IRQ already assigned */ if (ret && !s->irq.AssignedIRQ) { - if (!s->pci_irq) + if (!s->pci_irq) { + dev_printk(KERN_INFO, &s->dev, "no IRQ found\n"); return ret; + } type = IRQF_SHARED; irq = s->pci_irq; } @@ -740,8 +761,11 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { ret = request_irq(irq, req->Handler, type, p_dev->devname, req->Instance); - if (ret) + if (ret) { + dev_printk(KERN_INFO, &s->dev, + "request_irq() failed\n"); return ret; + } } /* Make sure the fact the request type was overridden is passed back */ @@ -780,8 +804,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h u_long align; int w; - if (!(s->state & SOCKET_PRESENT)) + if (!(s->state & SOCKET_PRESENT)) { + dev_dbg(&s->dev, "No card present\n"); return -ENODEV; + } if (req->Attributes & (WIN_PAGED | WIN_SHARED)) { dev_dbg(&s->dev, "bad attribute setting for iomem region\n"); return -EINVAL; @@ -1020,7 +1046,8 @@ static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple, if (*get->buf) { get->len = tuple->TupleDataLen; memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen); - } + } else + dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n"); return 0; }; -- cgit v1.2.3 From 638bba55fe6440439005f02fcd6b0c1f908d0d11 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sat, 7 Nov 2009 12:26:17 +0100 Subject: pcmcia: autoload module pcmcia Attempt to load the "pcmcia" module for 16-bit PCMCIA cards, so that PCMCIA support becomes available without pcmciautils/udev userspace interaction. Based on a suggestion and a patch Signed-off-by: Komuro but converted it to request_module_nowait() and move it to a later stage. Signed-off-by: Dominik Brodowski --- drivers/pcmcia/cs.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/pcmcia/cs.c') diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index b229f6d9e443..fc1c0c6baae2 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -243,6 +243,13 @@ int pcmcia_register_socket(struct pcmcia_socket *socket) pcmcia_parse_events(socket, SS_DETECT); + /* + * Let's try to get the PCMCIA module for 16-bit PCMCIA support. + * If it fails, it doesn't matter -- we still have 32-bit CardBus + * support to offer, so this is not a failure mode. + */ + request_module_nowait("pcmcia"); + return 0; err: -- cgit v1.2.3