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-rw-r--r--Documentation/devicetree/bindings/ipmi.txt25
-rw-r--r--drivers/acpi/acpi_pnp.c2
-rw-r--r--drivers/char/ipmi/ipmi_bt_sm.c2
-rw-r--r--drivers/char/ipmi/ipmi_kcs_sm.c2
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c46
-rw-r--r--drivers/char/ipmi/ipmi_powernv.c10
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c597
-rw-r--r--drivers/char/ipmi/ipmi_si_sm.h10
-rw-r--r--drivers/char/ipmi/ipmi_smic_sm.c2
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c14
-rw-r--r--include/linux/ipmi_smi.h7
11 files changed, 437 insertions, 280 deletions
diff --git a/Documentation/devicetree/bindings/ipmi.txt b/Documentation/devicetree/bindings/ipmi.txt
new file mode 100644
index 000000000000..d5f1a877ed3e
--- /dev/null
+++ b/Documentation/devicetree/bindings/ipmi.txt
@@ -0,0 +1,25 @@
+IPMI device
+
+Required properties:
+- compatible: should be one of ipmi-kcs, ipmi-smic, or ipmi-bt
+- device_type: should be ipmi
+- reg: Address and length of the register set for the device
+
+Optional properties:
+- interrupts: The interrupt for the device. Without this the interface
+ is polled.
+- reg-size - The size of the register. Defaults to 1
+- reg-spacing - The number of bytes between register starts. Defaults to 1
+- reg-shift - The amount to shift the registers to the right to get the data
+ into bit zero.
+
+Example:
+
+smic@fff3a000 {
+ compatible = "ipmi-smic";
+ device_type = "ipmi";
+ reg = <0xfff3a000 0x1000>;
+ interrupts = <0 24 4>;
+ reg-size = <4>;
+ reg-spacing = <4>;
+};
diff --git a/drivers/acpi/acpi_pnp.c b/drivers/acpi/acpi_pnp.c
index fb765524cc3d..c58940b231d6 100644
--- a/drivers/acpi/acpi_pnp.c
+++ b/drivers/acpi/acpi_pnp.c
@@ -19,8 +19,6 @@ static const struct acpi_device_id acpi_pnp_device_ids[] = {
{"PNP0600"}, /* Generic ESDI/IDE/ATA compatible hard disk controller */
/* floppy */
{"PNP0700"},
- /* ipmi_si */
- {"IPI0001"},
/* tpm_inf_pnp */
{"IFX0101"}, /* Infineon TPMs */
{"IFX0102"}, /* Infineon TPMs */
diff --git a/drivers/char/ipmi/ipmi_bt_sm.c b/drivers/char/ipmi/ipmi_bt_sm.c
index 61e71616689b..feafdab734ae 100644
--- a/drivers/char/ipmi/ipmi_bt_sm.c
+++ b/drivers/char/ipmi/ipmi_bt_sm.c
@@ -694,7 +694,7 @@ static int bt_size(void)
return sizeof(struct si_sm_data);
}
-struct si_sm_handlers bt_smi_handlers = {
+const struct si_sm_handlers bt_smi_handlers = {
.init_data = bt_init_data,
.start_transaction = bt_start_transaction,
.get_result = bt_get_result,
diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c
index 8c25f596808a..1da61af7f576 100644
--- a/drivers/char/ipmi/ipmi_kcs_sm.c
+++ b/drivers/char/ipmi/ipmi_kcs_sm.c
@@ -540,7 +540,7 @@ static void kcs_cleanup(struct si_sm_data *kcs)
{
}
-struct si_sm_handlers kcs_smi_handlers = {
+const struct si_sm_handlers kcs_smi_handlers = {
.init_data = init_kcs_data,
.start_transaction = start_kcs_transaction,
.get_result = get_kcs_result,
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index bf75f6361773..e3536da05c88 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -342,7 +342,7 @@ struct ipmi_smi {
* an umpreemptible region to use this. You must fetch the
* value into a local variable and make sure it is not NULL.
*/
- struct ipmi_smi_handlers *handlers;
+ const struct ipmi_smi_handlers *handlers;
void *send_info;
#ifdef CONFIG_PROC_FS
@@ -744,7 +744,13 @@ static void deliver_response(struct ipmi_recv_msg *msg)
ipmi_inc_stat(intf, unhandled_local_responses);
}
ipmi_free_recv_msg(msg);
- } else {
+ } else if (!oops_in_progress) {
+ /*
+ * If we are running in the panic context, calling the
+ * receive handler doesn't much meaning and has a deadlock
+ * risk. At this moment, simply skip it in that case.
+ */
+
ipmi_user_t user = msg->user;
user->handler->ipmi_recv_hndl(msg, user->handler_data);
}
@@ -1015,7 +1021,7 @@ int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data)
{
int rv = 0;
ipmi_smi_t intf;
- struct ipmi_smi_handlers *handlers;
+ const struct ipmi_smi_handlers *handlers;
mutex_lock(&ipmi_interfaces_mutex);
list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
@@ -1501,7 +1507,7 @@ static struct ipmi_smi_msg *smi_add_send_msg(ipmi_smi_t intf,
}
-static void smi_send(ipmi_smi_t intf, struct ipmi_smi_handlers *handlers,
+static void smi_send(ipmi_smi_t intf, const struct ipmi_smi_handlers *handlers,
struct ipmi_smi_msg *smi_msg, int priority)
{
int run_to_completion = intf->run_to_completion;
@@ -2747,7 +2753,7 @@ void ipmi_poll_interface(ipmi_user_t user)
}
EXPORT_SYMBOL(ipmi_poll_interface);
-int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
+int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
void *send_info,
struct ipmi_device_id *device_id,
struct device *si_dev,
@@ -3959,6 +3965,10 @@ free_msg:
if (!run_to_completion)
spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
+ /*
+ * We can get an asynchronous event or receive message in addition
+ * to commands we send.
+ */
if (msg == intf->curr_msg)
intf->curr_msg = NULL;
if (!run_to_completion)
@@ -4015,7 +4025,7 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
unsigned int *waiting_msgs)
{
struct ipmi_recv_msg *msg;
- struct ipmi_smi_handlers *handlers;
+ const struct ipmi_smi_handlers *handlers;
if (intf->in_shutdown)
return;
@@ -4082,7 +4092,7 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
ipmi_inc_stat(intf,
retransmitted_ipmb_commands);
- smi_send(intf, intf->handlers, smi_msg, 0);
+ smi_send(intf, handlers, smi_msg, 0);
} else
ipmi_free_smi_msg(smi_msg);
@@ -4291,6 +4301,9 @@ static void ipmi_panic_request_and_wait(ipmi_smi_t intf,
0, 1); /* Don't retry, and don't wait. */
if (rv)
atomic_sub(2, &panic_done_count);
+ else if (intf->handlers->flush_messages)
+ intf->handlers->flush_messages(intf->send_info);
+
while (atomic_read(&panic_done_count) != 0)
ipmi_poll(intf);
}
@@ -4364,9 +4377,7 @@ static void send_panic_events(char *str)
/* Interface is not ready. */
continue;
- intf->run_to_completion = 1;
/* Send the event announcing the panic. */
- intf->handlers->set_run_to_completion(intf->send_info, 1);
ipmi_panic_request_and_wait(intf, &addr, &msg);
}
@@ -4506,6 +4517,23 @@ static int panic_event(struct notifier_block *this,
/* Interface is not ready. */
continue;
+ /*
+ * If we were interrupted while locking xmit_msgs_lock or
+ * waiting_rcv_msgs_lock, the corresponding list may be
+ * corrupted. In this case, drop items on the list for
+ * the safety.
+ */
+ if (!spin_trylock(&intf->xmit_msgs_lock)) {
+ INIT_LIST_HEAD(&intf->xmit_msgs);
+ INIT_LIST_HEAD(&intf->hp_xmit_msgs);
+ } else
+ spin_unlock(&intf->xmit_msgs_lock);
+
+ if (!spin_trylock(&intf->waiting_rcv_msgs_lock))
+ INIT_LIST_HEAD(&intf->waiting_rcv_msgs);
+ else
+ spin_unlock(&intf->waiting_rcv_msgs_lock);
+
intf->run_to_completion = 1;
intf->handlers->set_run_to_completion(intf->send_info, 1);
}
diff --git a/drivers/char/ipmi/ipmi_powernv.c b/drivers/char/ipmi/ipmi_powernv.c
index 9b409c0f14f7..6e658aa114f1 100644
--- a/drivers/char/ipmi/ipmi_powernv.c
+++ b/drivers/char/ipmi/ipmi_powernv.c
@@ -143,8 +143,15 @@ static int ipmi_powernv_recv(struct ipmi_smi_powernv *smi)
pr_devel("%s: -> %d (size %lld)\n", __func__,
rc, rc == 0 ? size : 0);
if (rc) {
+ /* If came via the poll, and response was not yet ready */
+ if (rc == OPAL_EMPTY) {
+ spin_unlock_irqrestore(&smi->msg_lock, flags);
+ return 0;
+ }
+
+ smi->cur_msg = NULL;
spin_unlock_irqrestore(&smi->msg_lock, flags);
- ipmi_free_smi_msg(msg);
+ send_error_reply(smi, msg, IPMI_ERR_UNSPECIFIED);
return 0;
}
@@ -300,7 +307,6 @@ static const struct of_device_id ipmi_powernv_match[] = {
static struct platform_driver powernv_ipmi_driver = {
.driver = {
.name = "ipmi-powernv",
- .owner = THIS_MODULE,
.of_match_table = ipmi_powernv_match,
},
.probe = ipmi_powernv_probe,
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 8a45e92ff60c..654f6f36a071 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -64,7 +64,6 @@
#include <linux/dmi.h>
#include <linux/string.h>
#include <linux/ctype.h>
-#include <linux/pnp.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
@@ -164,7 +163,7 @@ struct smi_info {
int intf_num;
ipmi_smi_t intf;
struct si_sm_data *si_sm;
- struct si_sm_handlers *handlers;
+ const struct si_sm_handlers *handlers;
enum si_type si_type;
spinlock_t si_lock;
struct ipmi_smi_msg *waiting_msg;
@@ -263,9 +262,21 @@ struct smi_info {
bool supports_event_msg_buff;
/*
- * Can we clear the global enables receive irq bit?
+ * Can we disable interrupts the global enables receive irq
+ * bit? There are currently two forms of brokenness, some
+ * systems cannot disable the bit (which is technically within
+ * the spec but a bad idea) and some systems have the bit
+ * forced to zero even though interrupts work (which is
+ * clearly outside the spec). The next bool tells which form
+ * of brokenness is present.
*/
- bool cannot_clear_recv_irq_bit;
+ bool cannot_disable_irq;
+
+ /*
+ * Some systems are broken and cannot set the irq enable
+ * bit, even if they support interrupts.
+ */
+ bool irq_enable_broken;
/*
* Did we get an attention that we did not handle?
@@ -309,9 +320,6 @@ static int num_force_kipmid;
#ifdef CONFIG_PCI
static bool pci_registered;
#endif
-#ifdef CONFIG_ACPI
-static bool pnp_registered;
-#endif
#ifdef CONFIG_PARISC
static bool parisc_registered;
#endif
@@ -558,13 +566,14 @@ static u8 current_global_enables(struct smi_info *smi_info, u8 base,
if (smi_info->supports_event_msg_buff)
enables |= IPMI_BMC_EVT_MSG_BUFF;
- if ((smi_info->irq && !smi_info->interrupt_disabled) ||
- smi_info->cannot_clear_recv_irq_bit)
+ if (((smi_info->irq && !smi_info->interrupt_disabled) ||
+ smi_info->cannot_disable_irq) &&
+ !smi_info->irq_enable_broken)
enables |= IPMI_BMC_RCV_MSG_INTR;
if (smi_info->supports_event_msg_buff &&
- smi_info->irq && !smi_info->interrupt_disabled)
-
+ smi_info->irq && !smi_info->interrupt_disabled &&
+ !smi_info->irq_enable_broken)
enables |= IPMI_BMC_EVT_MSG_INTR;
*irq_on = enables & (IPMI_BMC_EVT_MSG_INTR | IPMI_BMC_RCV_MSG_INTR);
@@ -928,33 +937,36 @@ static void check_start_timer_thread(struct smi_info *smi_info)
}
}
+static void flush_messages(void *send_info)
+{
+ struct smi_info *smi_info = send_info;
+ enum si_sm_result result;
+
+ /*
+ * Currently, this function is called only in run-to-completion
+ * mode. This means we are single-threaded, no need for locks.
+ */
+ result = smi_event_handler(smi_info, 0);
+ while (result != SI_SM_IDLE) {
+ udelay(SI_SHORT_TIMEOUT_USEC);
+ result = smi_event_handler(smi_info, SI_SHORT_TIMEOUT_USEC);
+ }
+}
+
static void sender(void *send_info,
struct ipmi_smi_msg *msg)
{
struct smi_info *smi_info = send_info;
- enum si_sm_result result;
unsigned long flags;
debug_timestamp("Enqueue");
if (smi_info->run_to_completion) {
/*
- * If we are running to completion, start it and run
- * transactions until everything is clear.
+ * If we are running to completion, start it. Upper
+ * layer will call flush_messages to clear it out.
*/
smi_info->waiting_msg = msg;
-
- /*
- * Run to completion means we are single-threaded, no
- * need for locks.
- */
-
- result = smi_event_handler(smi_info, 0);
- while (result != SI_SM_IDLE) {
- udelay(SI_SHORT_TIMEOUT_USEC);
- result = smi_event_handler(smi_info,
- SI_SHORT_TIMEOUT_USEC);
- }
return;
}
@@ -975,17 +987,10 @@ static void sender(void *send_info,
static void set_run_to_completion(void *send_info, bool i_run_to_completion)
{
struct smi_info *smi_info = send_info;
- enum si_sm_result result;
smi_info->run_to_completion = i_run_to_completion;
- if (i_run_to_completion) {
- result = smi_event_handler(smi_info, 0);
- while (result != SI_SM_IDLE) {
- udelay(SI_SHORT_TIMEOUT_USEC);
- result = smi_event_handler(smi_info,
- SI_SHORT_TIMEOUT_USEC);
- }
- }
+ if (i_run_to_completion)
+ flush_messages(smi_info);
}
/*
@@ -1258,7 +1263,7 @@ static void set_maintenance_mode(void *send_info, bool enable)
atomic_set(&smi_info->req_events, 0);
}
-static struct ipmi_smi_handlers handlers = {
+static const struct ipmi_smi_handlers handlers = {
.owner = THIS_MODULE,
.start_processing = smi_start_processing,
.get_smi_info = get_smi_info,
@@ -1267,6 +1272,7 @@ static struct ipmi_smi_handlers handlers = {
.set_need_watch = set_need_watch,
.set_maintenance_mode = set_maintenance_mode,
.set_run_to_completion = set_run_to_completion,
+ .flush_messages = flush_messages,
.poll = poll,
};
@@ -1283,14 +1289,14 @@ static int smi_num; /* Used to sequence the SMIs */
#define DEFAULT_REGSIZE 1
#ifdef CONFIG_ACPI
-static bool si_tryacpi = 1;
+static bool si_tryacpi = true;
#endif
#ifdef CONFIG_DMI
-static bool si_trydmi = 1;
+static bool si_trydmi = true;
#endif
-static bool si_tryplatform = 1;
+static bool si_tryplatform = true;
#ifdef CONFIG_PCI
-static bool si_trypci = 1;
+static bool si_trypci = true;
#endif
static bool si_trydefaults = IS_ENABLED(CONFIG_IPMI_SI_PROBE_DEFAULTS);
static char *si_type[SI_MAX_PARMS];
@@ -1446,14 +1452,14 @@ static int std_irq_setup(struct smi_info *info)
return rv;
}
-static unsigned char port_inb(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inb(const struct si_sm_io *io, unsigned int offset)
{
unsigned int addr = io->addr_data;
return inb(addr + (offset * io->regspacing));
}
-static void port_outb(struct si_sm_io *io, unsigned int offset,
+static void port_outb(const struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
unsigned int addr = io->addr_data;
@@ -1461,14 +1467,14 @@ static void port_outb(struct si_sm_io *io, unsigned int offset,
outb(b, addr + (offset * io->regspacing));
}
-static unsigned char port_inw(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inw(const struct si_sm_io *io, unsigned int offset)
{
unsigned int addr = io->addr_data;
return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
}
-static void port_outw(struct si_sm_io *io, unsigned int offset,
+static void port_outw(const struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
unsigned int addr = io->addr_data;
@@ -1476,14 +1482,14 @@ static void port_outw(struct si_sm_io *io, unsigned int offset,
outw(b << io->regshift, addr + (offset * io->regspacing));
}
-static unsigned char port_inl(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inl(const struct si_sm_io *io, unsigned int offset)
{
unsigned int addr = io->addr_data;
return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
}
-static void port_outl(struct si_sm_io *io, unsigned int offset,
+static void port_outl(const struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
unsigned int addr = io->addr_data;
@@ -1556,49 +1562,52 @@ static int port_setup(struct smi_info *info)
return 0;
}
-static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inb(const struct si_sm_io *io,
+ unsigned int offset)
{
return readb((io->addr)+(offset * io->regspacing));
}
-static void intf_mem_outb(struct si_sm_io *io, unsigned int offset,
- unsigned char b)
+static void intf_mem_outb(const struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
{
writeb(b, (io->addr)+(offset * io->regspacing));
}
-static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inw(const struct si_sm_io *io,
+ unsigned int offset)
{
return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift)
& 0xff;
}
-static void intf_mem_outw(struct si_sm_io *io, unsigned int offset,
- unsigned char b)
+static void intf_mem_outw(const struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
{
writeb(b << io->regshift, (io->addr)+(offset * io->regspacing));
}
-static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inl(const struct si_sm_io *io,
+ unsigned int offset)
{
return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift)
& 0xff;
}
-static void intf_mem_outl(struct si_sm_io *io, unsigned int offset,
- unsigned char b)
+static void intf_mem_outl(const struct si_sm_io *io, unsigned int offset,
+ unsigned char b)
{
writel(b << io->regshift, (io->addr)+(offset * io->regspacing));
}
#ifdef readq
-static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset)
+static unsigned char mem_inq(const struct si_sm_io *io, unsigned int offset)
{
return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift)
& 0xff;
}
-static void mem_outq(struct si_sm_io *io, unsigned int offset,
+static void mem_outq(const struct si_sm_io *io, unsigned int offset,
unsigned char b)
{
writeq(b << io->regshift, (io->addr)+(offset * io->regspacing));
@@ -2233,134 +2242,6 @@ static void spmi_find_bmc(void)
try_init_spmi(spmi);
}
}
-
-static int ipmi_pnp_probe(struct pnp_dev *dev,
- const struct pnp_device_id *dev_id)
-{
- struct acpi_device *acpi_dev;
- struct smi_info *info;
- struct resource *res, *res_second;
- acpi_handle handle;
- acpi_status status;
- unsigned long long tmp;
- int rv = -EINVAL;
-
- acpi_dev = pnp_acpi_device(dev);
- if (!acpi_dev)
- return -ENODEV;
-
- info = smi_info_alloc();
- if (!info)
- return -ENOMEM;
-
- info->addr_source = SI_ACPI;
- printk(KERN_INFO PFX "probing via ACPI\n");
-
- handle = acpi_dev->handle;
- info->addr_info.acpi_info.acpi_handle = handle;
-
- /* _IFT tells us the interface type: KCS, BT, etc */
- status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp);
- if (ACPI_FAILURE(status)) {
- dev_err(&dev->dev, "Could not find ACPI IPMI interface type\n");
- goto err_free;
- }
-
- switch (tmp) {
- case 1:
- info->si_type = SI_KCS;
- break;
- case 2:
- info->si_type = SI_SMIC;
- break;
- case 3:
- info->si_type = SI_BT;
- break;
- case 4: /* SSIF, just ignore */
- rv = -ENODEV;
- goto err_free;
- default:
- dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp);
- goto err_free;
- }
-
- res = pnp_get_resource(dev, IORESOURCE_IO, 0);
- if (res) {
- info->io_setup = port_setup;
- info->io.addr_type = IPMI_IO_ADDR_SPACE;
- } else {
- res = pnp_get_resource(dev, IORESOURCE_MEM, 0);
- if (res) {
- info->io_setup = mem_setup;
- info->io.addr_type = IPMI_MEM_ADDR_SPACE;
- }
- }
- if (!res) {
- dev_err(&dev->dev, "no I/O or memory address\n");
- goto err_free;
- }
- info->io.addr_data = res->start;
-
- info->io.regspacing = DEFAULT_REGSPACING;
- res_second = pnp_get_resource(dev,
- (info->io.addr_type == IPMI_IO_ADDR_SPACE) ?
- IORESOURCE_IO : IORESOURCE_MEM,
- 1);
- if (res_second) {
- if (res_second->start > info->io.addr_data)
- info->io.regspacing = res_second->start - info->io.addr_data;
- }
- info->io.regsize = DEFAULT_REGSPACING;
- info->io.regshift = 0;
-
- /* If _GPE exists, use it; otherwise use standard interrupts */
- status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp);
- if (ACPI_SUCCESS(status)) {
- info->irq = tmp;
- info->irq_setup = acpi_gpe_irq_setup;
- } else if (pnp_irq_valid(dev, 0)) {
- info->irq = pnp_irq(dev, 0);
- info->irq_setup = std_irq_setup;
- }
-
- info->dev = &dev->dev;
- pnp_set_drvdata(dev, info);
-
- dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n",
- res, info->io.regsize, info->io.regspacing,
- info->irq);
-
- rv = add_smi(info);
- if (rv)
- kfree(info);
-
- return rv;
-
-err_free:
- kfree(info);
- return rv;
-}
-
-static void ipmi_pnp_remove(struct pnp_dev *dev)
-{
- struct smi_info *info = pnp_get_drvdata(dev);
-
- cleanup_one_si(info);
-}
-
-static const struct pnp_device_id pnp_dev_table[] = {
- {"IPI0001", 0},
- {"", 0},
-};
-
-static struct pnp_driver ipmi_pnp_driver = {
- .name = DEVICE_NAME,
- .probe = ipmi_pnp_probe,
- .remove = ipmi_pnp_remove,
- .id_table = pnp_dev_table,
-};
-
-MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
#endif
#ifdef CONFIG_DMI
@@ -2654,7 +2535,7 @@ static void ipmi_pci_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
-static struct pci_device_id ipmi_pci_devices[] = {
+static const struct pci_device_id ipmi_pci_devices[] = {
{ PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) },
{ PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) },
{ 0, }
@@ -2669,10 +2550,19 @@ static struct pci_driver ipmi_pci_driver = {
};
#endif /* CONFIG_PCI */
-static const struct of_device_id ipmi_match[];
-static int ipmi_probe(struct platform_device *dev)
-{
#ifdef CONFIG_OF
+static const struct of_device_id of_ipmi_match[] = {
+ { .type = "ipmi", .compatible = "ipmi-kcs",
+ .data = (void *)(unsigned long) SI_KCS },
+ { .type = "ipmi", .compatible = "ipmi-smic",
+ .data = (void *)(unsigned long) SI_SMIC },
+ { .type = "ipmi", .compatible = "ipmi-bt",
+ .data = (void *)(unsigned long) SI_BT },
+ {},
+};
+
+static int of_ipmi_probe(struct platform_device *dev)
+{
const struct of_device_id *match;
struct smi_info *info;
struct resource resource;
@@ -2683,9 +2573,9 @@ static int ipmi_probe(struct platform_device *dev)
dev_info(&dev->dev, "probing via device tree\n");
- match = of_match_device(ipmi_match, &dev->dev);
+ match = of_match_device(of_ipmi_match, &dev->dev);
if (!match)
- return -EINVAL;
+ return -ENODEV;
if (!of_device_is_available(np))
return -EINVAL;
@@ -2754,33 +2644,160 @@ static int ipmi_probe(struct platform_device *dev)
kfree(info);
return ret;
}
-#endif
return 0;
}
+MODULE_DEVICE_TABLE(of, of_ipmi_match);
+#else
+#define of_ipmi_match NULL
+static int of_ipmi_probe(struct platform_device *dev)
+{
+ return -ENODEV;
+}
+#endif
-static int ipmi_remove(struct platform_device *dev)
+#ifdef CONFIG_ACPI
+static int acpi_ipmi_probe(struct platform_device *dev)
{
-#ifdef CONFIG_OF
- cleanup_one_si(dev_get_drvdata(&dev->dev));
+ struct smi_info *info;
+ struct resource *res, *res_second;
+ acpi_handle handle;
+ acpi_status status;
+ unsigned long long tmp;
+ int rv = -EINVAL;
+
+ handle = ACPI_HANDLE(&dev->dev);
+ if (!handle)
+ return -ENODEV;
+
+ info = smi_info_alloc();
+ if (!info)
+ return -ENOMEM;
+
+ info->addr_source = SI_ACPI;
+ dev_info(&dev->dev, PFX "probing via ACPI\n");
+
+ info->addr_info.acpi_info.acpi_handle = handle;
+
+ /* _IFT tells us the interface type: KCS, BT, etc */
+ status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&dev->dev, "Could not find ACPI IPMI interface type\n");
+ goto err_free;
+ }
+
+ switch (tmp) {
+ case 1:
+ info->si_type = SI_KCS;
+ break;
+ case 2:
+ info->si_type = SI_SMIC;
+ break;
+ case 3:
+ info->si_type = SI_BT;
+ break;
+ case 4: /* SSIF, just ignore */
+ rv = -ENODEV;
+ goto err_free;
+ default:
+ dev_info(&dev->dev, "unknown IPMI type %lld\n", tmp);
+ goto err_free;
+ }
+
+ res = platform_get_resource(dev, IORESOURCE_IO, 0);
+ if (res) {
+ info->io_setup = port_setup;
+ info->io.addr_type = IPMI_IO_ADDR_SPACE;
+ } else {
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (res) {
+ info->io_setup = mem_setup;
+ info->io.addr_type = IPMI_MEM_ADDR_SPACE;
+ }
+ }
+ if (!res) {
+ dev_err(&dev->dev, "no I/O or memory address\n");
+ goto err_free;
+ }
+ info->io.addr_data = res->start;
+
+ info->io.regspacing = DEFAULT_REGSPACING;
+ res_second = platform_get_resource(dev,
+ (info->io.addr_type == IPMI_IO_ADDR_SPACE) ?
+ IORESOURCE_IO : IORESOURCE_MEM,
+ 1);
+ if (res_second) {
+ if (res_second->start > info->io.addr_data)
+ info->io.regspacing =
+ res_second->start - info->io.addr_data;
+ }
+ info->io.regsize = DEFAULT_REGSPACING;
+ info->io.regshift = 0;
+
+ /* If _GPE exists, use it; otherwise use standard interrupts */
+ status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp);
+ if (ACPI_SUCCESS(status)) {
+ info->irq = tmp;
+ info->irq_setup = acpi_gpe_irq_setup;
+ } else {
+ int irq = platform_get_irq(dev, 0);
+
+ if (irq > 0) {
+ info->irq = irq;
+ info->irq_setup = std_irq_setup;
+ }
+ }
+
+ info->dev = &dev->dev;
+ platform_set_drvdata(dev, info);
+
+ dev_info(info->dev, "%pR regsize %d spacing %d irq %d\n",
+ res, info->io.regsize, info->io.regspacing,
+ info->irq);
+
+ rv = add_smi(info);
+ if (rv)
+ kfree(info);
+
+ return rv;
+
+err_free:
+ kfree(info);
+ return rv;
+}
+
+static const struct acpi_device_id acpi_ipmi_match[] = {
+ { "IPI0001", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, acpi_ipmi_match);
+#else
+static int acpi_ipmi_probe(struct platform_device *dev)
+{
+ return -ENODEV;
+}
#endif
- return 0;
+
+static int ipmi_probe(struct platform_device *dev)
+{
+ if (of_ipmi_probe(dev) == 0)
+ return 0;
+
+ return acpi_ipmi_probe(dev);
}
-static const struct of_device_id ipmi_match[] =
+static int ipmi_remove(struct platform_device *dev)
{
- { .type = "ipmi", .compatible = "ipmi-kcs",
- .data = (void *)(unsigned long) SI_KCS },
- { .type = "ipmi", .compatible = "ipmi-smic",
- .data = (void *)(unsigned long) SI_SMIC },
- { .type = "ipmi", .compatible = "ipmi-bt",
- .data = (void *)(unsigned long) SI_BT },
- {},
-};
+ struct smi_info *info = dev_get_drvdata(&dev->dev);
+
+ cleanup_one_si(info);
+ return 0;
+}
static struct platform_driver ipmi_driver = {
.driver = {
.name = DEVICE_NAME,
- .of_match_table = ipmi_match,
+ .of_match_table = of_ipmi_match,
+ .acpi_match_table = ACPI_PTR(acpi_ipmi_match),
},
.probe = ipmi_probe,
.remove = ipmi_remove,
@@ -2905,12 +2922,7 @@ static int try_get_dev_id(struct smi_info *smi_info)
return rv;
}
-/*
- * Some BMCs do not support clearing the receive irq bit in the global
- * enables (even if they don't support interrupts on the BMC). Check
- * for this and handle it properly.
- */
-static void check_clr_rcv_irq(struct smi_info *smi_info)
+static int get_global_enables(struct smi_info *smi_info, u8 *enables)
{
unsigned char msg[3];
unsigned char *resp;
@@ -2918,12 +2930,8 @@ static void check_clr_rcv_irq(struct smi_info *smi_info)
int rv;
resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL);
- if (!resp) {
- printk(KERN_WARNING PFX "Out of memory allocating response for"
- " global enables command, cannot check recv irq bit"
- " handling.\n");
- return;
- }
+ if (!resp)
+ return -ENOMEM;
msg[0] = IPMI_NETFN_APP_REQUEST << 2;
msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD;
@@ -2931,9 +2939,9 @@ static void check_clr_rcv_irq(struct smi_info *smi_info)
rv = wait_for_msg_done(smi_info);
if (rv) {
- printk(KERN_WARNING PFX "Error getting response from get"
- " global enables command, cannot check recv irq bit"
- " handling.\n");
+ dev_warn(smi_info->dev,
+ "Error getting response from get global enables command: %d\n",
+ rv);
goto out;
}
@@ -2944,27 +2952,44 @@ static void check_clr_rcv_irq(struct smi_info *smi_info)
resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
resp[1] != IPMI_GET_BMC_GLOBAL_ENABLES_CMD ||
resp[2] != 0) {
- printk(KERN_WARNING PFX "Invalid return from get global"
- " enables command, cannot check recv irq bit"
- " handling.\n");
+ dev_warn(smi_info->dev,
+ "Invalid return from get global enables command: %ld %x %x %x\n",
+ resp_len, resp[0], resp[1], resp[2]);
rv = -EINVAL;
goto out;
+ } else {
+ *enables = resp[3];
}
- if ((resp[3] & IPMI_BMC_RCV_MSG_INTR) == 0)
- /* Already clear, should work ok. */
- goto out;
+out:
+ kfree(resp);
+ return rv;
+}
+
+/*
+ * Returns 1 if it gets an error from the command.
+ */
+static int set_global_enables(struct smi_info *smi_info, u8 enables)
+{
+ unsigned char msg[3];
+ unsigned char *resp;
+ unsigned long resp_len;
+ int rv;
+
+ resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL);
+ if (!resp)
+ return -ENOMEM;
msg[0] = IPMI_NETFN_APP_REQUEST << 2;
msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD;
- msg[2] = resp[3] & ~IPMI_BMC_RCV_MSG_INTR;
+ msg[2] = enables;
smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3);
rv = wait_for_msg_done(smi_info);
if (rv) {
- printk(KERN_WARNING PFX "Error getting response from set"
- " global enables command, cannot check recv irq bit"
- " handling.\n");
+ dev_warn(smi_info->dev,
+ "Error getting response from set global enables command: %d\n",
+ rv);
goto out;
}
@@ -2974,25 +2999,93 @@ static void check_clr_rcv_irq(struct smi_info *smi_info)
if (resp_len < 3 ||
resp[0] != (IPMI_NETFN_APP_REQUEST | 1) << 2 ||
resp[1] != IPMI_SET_BMC_GLOBAL_ENABLES_CMD) {
- printk(KERN_WARNING PFX "Invalid return from get global"
- " enables command, cannot check recv irq bit"
- " handling.\n");
+ dev_warn(smi_info->dev,
+ "Invalid return from set global enables command: %ld %x %x\n",
+ resp_len, resp[0], resp[1]);
rv = -EINVAL;
goto out;
}
- if (resp[2] != 0) {
+ if (resp[2] != 0)
+ rv = 1;
+
+out:
+ kfree(resp);
+ return rv;
+}
+
+/*
+ * Some BMCs do not support clearing the receive irq bit in the global
+ * enables (even if they don't support interrupts on the BMC). Check
+ * for this and handle it properly.
+ */
+static void check_clr_rcv_irq(struct smi_info *smi_info)
+{
+ u8 enables = 0;
+ int rv;
+
+ rv = get_global_enables(smi_info, &enables);
+ if (!rv) {
+ if ((enables & IPMI_BMC_RCV_MSG_INTR) == 0)
+ /* Already clear, should work ok. */
+ return;
+
+ enables &= ~IPMI_BMC_RCV_MSG_INTR;
+ rv = set_global_enables(smi_info, enables);
+ }
+
+ if (rv < 0) {
+ dev_err(smi_info->dev,
+ "Cannot check clearing the rcv irq: %d\n", rv);
+ return;
+ }
+
+ if (rv) {
/*
* An error when setting the event buffer bit means
* clearing the bit is not supported.
*/
- printk(KERN_WARNING PFX "The BMC does not support clearing"
- " the recv irq bit, compensating, but the BMC needs to"
- " be fixed.\n");
- smi_info->cannot_clear_recv_irq_bit = true;
+ dev_warn(smi_info->dev,
+ "The BMC does not support clearing the recv irq bit, compensating, but the BMC needs to be fixed.\n");
+ smi_info->cannot_disable_irq = true;
+ }
+}
+
+/*
+ * Some BMCs do not support setting the interrupt bits in the global
+ * enables even if they support interrupts. Clearly bad, but we can
+ * compensate.
+ */
+static void check_set_rcv_irq(struct smi_info *smi_info)
+{
+ u8 enables = 0;
+ int rv;
+
+ if (!smi_info->irq)
+ return;
+
+ rv = get_global_enables(smi_info, &enables);
+ if (!rv) {
+ enables |= IPMI_BMC_RCV_MSG_INTR;
+ rv = set_global_enables(smi_info, enables);
+ }
+
+ if (rv < 0) {
+ dev_err(smi_info->dev,
+ "Cannot check setting the rcv irq: %d\n", rv);
+ return;
+ }
+
+ if (rv) {
+ /*
+ * An error when setting the event buffer bit means
+ * setting the bit is not supported.
+ */
+ dev_warn(smi_info->dev,
+ "The BMC does not support setting the recv irq bit, compensating, but the BMC needs to be fixed.\n");
+ smi_info->cannot_disable_irq = true;
+ smi_info->irq_enable_broken = true;
}
- out:
- kfree(resp);
}
static int try_enable_event_buffer(struct smi_info *smi_info)
@@ -3313,6 +3406,12 @@ static void setup_xaction_handlers(struct smi_info *smi_info)
setup_dell_poweredge_bt_xaction_handler(smi_info);
}
+static void check_for_broken_irqs(struct smi_info *smi_info)
+{
+ check_clr_rcv_irq(smi_info);
+ check_set_rcv_irq(smi_info);
+}
+
static inline void wait_for_timer_and_thread(struct smi_info *smi_info)
{
if (smi_info->thread != NULL)
@@ -3321,7 +3420,7 @@ static inline void wait_for_timer_and_thread(struct smi_info *smi_info)
del_timer_sync(&smi_info->si_timer);
}
-static struct ipmi_default_vals
+static const struct ipmi_default_vals
{
int type;
int port;
@@ -3490,10 +3589,9 @@ static int try_smi_init(struct smi_info *new_smi)
goto out_err;
}
- check_clr_rcv_irq(new_smi);
-
setup_oem_data_handler(new_smi);
setup_xaction_handlers(new_smi);
+ check_for_broken_irqs(new_smi);
new_smi->waiting_msg = NULL;
new_smi->curr_msg = NULL;
@@ -3692,13 +3790,6 @@ static int init_ipmi_si(void)
}
#endif
-#ifdef CONFIG_ACPI
- if (si_tryacpi) {
- pnp_register_driver(&ipmi_pnp_driver);
- pnp_registered = true;
- }
-#endif
-
#ifdef CONFIG_DMI
if (si_trydmi)
dmi_find_bmc();
@@ -3850,10 +3941,6 @@ static void cleanup_ipmi_si(void)
if (pci_registered)
pci_unregister_driver(&ipmi_pci_driver);
#endif
-#ifdef CONFIG_ACPI
- if (pnp_registered)
- pnp_unregister_driver(&ipmi_pnp_driver);
-#endif
#ifdef CONFIG_PARISC
if (parisc_registered)
unregister_parisc_driver(&ipmi_parisc_driver);
diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h
index df89f73475fb..a705027c0493 100644
--- a/drivers/char/ipmi/ipmi_si_sm.h
+++ b/drivers/char/ipmi/ipmi_si_sm.h
@@ -46,8 +46,8 @@ struct si_sm_data;
* this interface.
*/
struct si_sm_io {
- unsigned char (*inputb)(struct si_sm_io *io, unsigned int offset);
- void (*outputb)(struct si_sm_io *io,
+ unsigned char (*inputb)(const struct si_sm_io *io, unsigned int offset);
+ void (*outputb)(const struct si_sm_io *io,
unsigned int offset,
unsigned char b);
@@ -135,7 +135,7 @@ struct si_sm_handlers {
};
/* Current state machines that we can use. */
-extern struct si_sm_handlers kcs_smi_handlers;
-extern struct si_sm_handlers smic_smi_handlers;
-extern struct si_sm_handlers bt_smi_handlers;
+extern const struct si_sm_handlers kcs_smi_handlers;
+extern const struct si_sm_handlers smic_smi_handlers;
+extern const struct si_sm_handlers bt_smi_handlers;
diff --git a/drivers/char/ipmi/ipmi_smic_sm.c b/drivers/char/ipmi/ipmi_smic_sm.c
index c8e77afa8b96..8f7c73ff58f2 100644
--- a/drivers/char/ipmi/ipmi_smic_sm.c
+++ b/drivers/char/ipmi/ipmi_smic_sm.c
@@ -589,7 +589,7 @@ static int smic_size(void)
return sizeof(struct si_sm_data);
}
-struct si_sm_handlers smic_smi_handlers = {
+const struct si_sm_handlers smic_smi_handlers = {
.init_data = init_smic_data,
.start_transaction = start_smic_transaction,
.get_result = smic_get_result,
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 207689c444a8..877205d22046 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -1136,6 +1136,10 @@ module_param_array(slave_addrs, int, &num_slave_addrs, 0);
MODULE_PARM_DESC(slave_addrs,
"The default IPMB slave address for the controller.");
+static bool alerts_broken;
+module_param(alerts_broken, bool, 0);
+MODULE_PARM_DESC(alerts_broken, "Don't enable alerts for the controller.");
+
/*
* Bit 0 enables message debugging, bit 1 enables state debugging, and
* bit 2 enables timing debugging. This is an array indexed by
@@ -1154,11 +1158,11 @@ static int use_thread;
module_param(use_thread, int, 0);
MODULE_PARM_DESC(use_thread, "Use the thread interface.");
-static bool ssif_tryacpi = 1;
+static bool ssif_tryacpi = true;
module_param_named(tryacpi, ssif_tryacpi, bool, 0);
MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the default scan of the interfaces identified via ACPI");
-static bool ssif_trydmi = 1;
+static bool ssif_trydmi = true;
module_param_named(trydmi, ssif_trydmi, bool, 0);
MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the default scan of the interfaces identified via DMI (SMBIOS)");
@@ -1582,6 +1586,10 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
ssif_info->global_enables |= IPMI_BMC_EVT_MSG_BUFF;
}
+ /* Some systems don't behave well if you enable alerts. */
+ if (alerts_broken)
+ goto found;
+
msg[0] = IPMI_NETFN_APP_REQUEST << 2;
msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD;
msg[2] = ssif_info->global_enables | IPMI_BMC_RCV_MSG_INTR;
@@ -1787,7 +1795,7 @@ skip_addr:
}
#ifdef CONFIG_ACPI
-static struct acpi_device_id ssif_acpi_match[] = {
+static const struct acpi_device_id ssif_acpi_match[] = {
{ "IPI0001", 0 },
{ },
};
diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h
index 0b1e569f5ff5..f8cea14485dd 100644
--- a/include/linux/ipmi_smi.h
+++ b/include/linux/ipmi_smi.h
@@ -115,6 +115,11 @@ struct ipmi_smi_handlers {
implement it. */
void (*set_need_watch)(void *send_info, bool enable);
+ /*
+ * Called when flushing all pending messages.
+ */
+ void (*flush_messages)(void *send_info);
+
/* Called when the interface should go into "run to
completion" mode. If this call sets the value to true, the
interface should make sure that all messages are flushed
@@ -207,7 +212,7 @@ static inline int ipmi_demangle_device_id(const unsigned char *data,
upper layer until the start_processing() function in the handlers
is called, and the lower layer must get the interface from that
call. */
-int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
+int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
void *send_info,
struct ipmi_device_id *device_id,
struct device *dev,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 11:03:18 +0000