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-rw-r--r--drivers/char/ipmi/Kconfig5
-rw-r--r--drivers/char/ipmi/Makefile1
-rw-r--r--drivers/char/ipmi/ipmi_devintf.c6
-rw-r--r--drivers/char/ipmi/ipmi_dmi.c139
-rw-r--r--drivers/char/ipmi/ipmi_dmi.h2
-rw-r--r--drivers/char/ipmi/ipmi_msghandler.c159
-rw-r--r--drivers/char/ipmi/ipmi_plat_data.c121
-rw-r--r--drivers/char/ipmi/ipmi_plat_data.h22
-rw-r--r--drivers/char/ipmi/ipmi_si.h14
-rw-r--r--drivers/char/ipmi/ipmi_si_hardcode.c149
-rw-r--r--drivers/char/ipmi/ipmi_si_hotmod.c222
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c102
-rw-r--r--drivers/char/ipmi/ipmi_si_mem_io.c5
-rw-r--r--drivers/char/ipmi/ipmi_si_parisc.c2
-rw-r--r--drivers/char/ipmi/ipmi_si_pci.c4
-rw-r--r--drivers/char/ipmi/ipmi_si_platform.c73
-rw-r--r--drivers/char/ipmi/ipmi_si_port_io.c5
-rw-r--r--drivers/char/ipmi/ipmi_si_sm.h14
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c188
-rw-r--r--drivers/char/ipmi/kcs_bmc.c5
-rw-r--r--include/linux/ipmi_smi.h27
21 files changed, 776 insertions, 489 deletions
diff --git a/drivers/char/ipmi/Kconfig b/drivers/char/ipmi/Kconfig
index c108441882cc..94719fc6ff9d 100644
--- a/drivers/char/ipmi/Kconfig
+++ b/drivers/char/ipmi/Kconfig
@@ -18,6 +18,10 @@ menuconfig IPMI_HANDLER
If unsure, say N.
config IPMI_DMI_DECODE
+ select IPMI_PLAT_DATA
+ bool
+
+config IPMI_PLAT_DATA
bool
if IPMI_HANDLER
@@ -56,6 +60,7 @@ config IPMI_DEVICE_INTERFACE
config IPMI_SI
tristate 'IPMI System Interface handler'
+ select IPMI_PLAT_DATA
help
Provides a driver for System Interfaces (KCS, SMIC, BT).
Currently, only KCS and SMIC are supported. If
diff --git a/drivers/char/ipmi/Makefile b/drivers/char/ipmi/Makefile
index 7a3baf301a8f..3f06b2062475 100644
--- a/drivers/char/ipmi/Makefile
+++ b/drivers/char/ipmi/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_IPMI_HANDLER) += ipmi_msghandler.o
obj-$(CONFIG_IPMI_DEVICE_INTERFACE) += ipmi_devintf.o
obj-$(CONFIG_IPMI_SI) += ipmi_si.o
obj-$(CONFIG_IPMI_DMI_DECODE) += ipmi_dmi.o
+obj-$(CONFIG_IPMI_PLAT_DATA) += ipmi_plat_data.o
obj-$(CONFIG_IPMI_SSIF) += ipmi_ssif.o
obj-$(CONFIG_IPMI_POWERNV) += ipmi_powernv.o
obj-$(CONFIG_IPMI_WATCHDOG) += ipmi_watchdog.o
diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index effab11887ca..99c9f581a1f3 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -207,7 +207,7 @@ static int handle_recv(struct ipmi_file_private *priv,
struct list_head *entry;
struct ipmi_recv_msg *msg;
unsigned long flags;
- int rv = 0;
+ int rv = 0, rv2 = 0;
/* We claim a mutex because we don't want two
users getting something from the queue at a time.
@@ -250,7 +250,7 @@ static int handle_recv(struct ipmi_file_private *priv,
if (msg->msg.data_len > 0) {
if (rsp->msg.data_len < msg->msg.data_len) {
- rv = -EMSGSIZE;
+ rv2 = -EMSGSIZE;
if (trunc)
msg->msg.data_len = rsp->msg.data_len;
else
@@ -274,7 +274,7 @@ static int handle_recv(struct ipmi_file_private *priv,
mutex_unlock(&priv->recv_mutex);
ipmi_free_recv_msg(msg);
- return 0;
+ return rv2;
recv_putback_on_err:
/* If we got an error, put the message back onto
diff --git a/drivers/char/ipmi/ipmi_dmi.c b/drivers/char/ipmi/ipmi_dmi.c
index 249880457b17..ff0b199be472 100644
--- a/drivers/char/ipmi/ipmi_dmi.c
+++ b/drivers/char/ipmi/ipmi_dmi.c
@@ -14,6 +14,7 @@
#include <linux/property.h>
#include "ipmi_si_sm.h"
#include "ipmi_dmi.h"
+#include "ipmi_plat_data.h"
#define IPMI_DMI_TYPE_KCS 0x01
#define IPMI_DMI_TYPE_SMIC 0x02
@@ -22,7 +23,7 @@
struct ipmi_dmi_info {
enum si_type si_type;
- u32 flags;
+ unsigned int space; /* addr space for si, intf# for ssif */
unsigned long addr;
u8 slave_addr;
struct ipmi_dmi_info *next;
@@ -33,133 +34,60 @@ static struct ipmi_dmi_info *ipmi_dmi_infos;
static int ipmi_dmi_nr __initdata;
static void __init dmi_add_platform_ipmi(unsigned long base_addr,
- u32 flags,
+ unsigned int space,
u8 slave_addr,
int irq,
int offset,
int type)
{
- struct platform_device *pdev;
- struct resource r[4];
- unsigned int num_r = 1, size;
- struct property_entry p[5];
- unsigned int pidx = 0;
- char *name;
- int rv;
- enum si_type si_type;
+ const char *name;
struct ipmi_dmi_info *info;
+ struct ipmi_plat_data p;
- memset(p, 0, sizeof(p));
+ memset(&p, 0, sizeof(p));
name = "dmi-ipmi-si";
switch (type) {
case IPMI_DMI_TYPE_SSIF:
name = "dmi-ipmi-ssif";
- offset = 1;
- size = 1;
- si_type = SI_TYPE_INVALID;
+ p.type = SI_TYPE_INVALID;
break;
case IPMI_DMI_TYPE_BT:
- size = 3;
- si_type = SI_BT;
+ p.type = SI_BT;
break;
case IPMI_DMI_TYPE_KCS:
- size = 2;
- si_type = SI_KCS;
+ p.type = SI_KCS;
break;
case IPMI_DMI_TYPE_SMIC:
- size = 2;
- si_type = SI_SMIC;
+ p.type = SI_SMIC;
break;
default:
pr_err("Invalid IPMI type: %d\n", type);
return;
}
- if (si_type != SI_TYPE_INVALID)
- p[pidx++] = PROPERTY_ENTRY_U8("ipmi-type", si_type);
-
- p[pidx++] = PROPERTY_ENTRY_U8("slave-addr", slave_addr);
- p[pidx++] = PROPERTY_ENTRY_U8("addr-source", SI_SMBIOS);
+ memset(&p, 0, sizeof(p));
+ p.addr = base_addr;
+ p.space = space;
+ p.regspacing = offset;
+ p.irq = irq;
+ p.slave_addr = slave_addr;
+ p.addr_source = SI_SMBIOS;
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
pr_warn("Could not allocate dmi info\n");
} else {
- info->si_type = si_type;
- info->flags = flags;
+ info->si_type = p.type;
+ info->space = space;
info->addr = base_addr;
info->slave_addr = slave_addr;
info->next = ipmi_dmi_infos;
ipmi_dmi_infos = info;
}
- pdev = platform_device_alloc(name, ipmi_dmi_nr);
- if (!pdev) {
- pr_err("Error allocation IPMI platform device\n");
- return;
- }
-
- if (type == IPMI_DMI_TYPE_SSIF) {
- p[pidx++] = PROPERTY_ENTRY_U16("i2c-addr", base_addr);
- goto add_properties;
- }
-
- memset(r, 0, sizeof(r));
-
- r[0].start = base_addr;
- r[0].end = r[0].start + offset - 1;
- r[0].name = "IPMI Address 1";
- r[0].flags = flags;
-
- if (size > 1) {
- r[1].start = r[0].start + offset;
- r[1].end = r[1].start + offset - 1;
- r[1].name = "IPMI Address 2";
- r[1].flags = flags;
- num_r++;
- }
-
- if (size > 2) {
- r[2].start = r[1].start + offset;
- r[2].end = r[2].start + offset - 1;
- r[2].name = "IPMI Address 3";
- r[2].flags = flags;
- num_r++;
- }
-
- if (irq) {
- r[num_r].start = irq;
- r[num_r].end = irq;
- r[num_r].name = "IPMI IRQ";
- r[num_r].flags = IORESOURCE_IRQ;
- num_r++;
- }
-
- rv = platform_device_add_resources(pdev, r, num_r);
- if (rv) {
- dev_err(&pdev->dev, "Unable to add resources: %d\n", rv);
- goto err;
- }
-
-add_properties:
- rv = platform_device_add_properties(pdev, p);
- if (rv) {
- dev_err(&pdev->dev, "Unable to add properties: %d\n", rv);
- goto err;
- }
-
- rv = platform_device_add(pdev);
- if (rv) {
- dev_err(&pdev->dev, "Unable to add device: %d\n", rv);
- goto err;
- }
-
- ipmi_dmi_nr++;
- return;
-
-err:
- platform_device_put(pdev);
+ if (ipmi_platform_add(name, ipmi_dmi_nr, &p))
+ ipmi_dmi_nr++;
}
/*
@@ -169,14 +97,14 @@ err:
* This function allows an ACPI-specified IPMI device to look up the
* slave address from the DMI table.
*/
-int ipmi_dmi_get_slave_addr(enum si_type si_type, u32 flags,
+int ipmi_dmi_get_slave_addr(enum si_type si_type, unsigned int space,
unsigned long base_addr)
{
struct ipmi_dmi_info *info = ipmi_dmi_infos;
while (info) {
if (info->si_type == si_type &&
- info->flags == flags &&
+ info->space == space &&
info->addr == base_addr)
return info->slave_addr;
info = info->next;
@@ -197,13 +125,13 @@ EXPORT_SYMBOL(ipmi_dmi_get_slave_addr);
static void __init dmi_decode_ipmi(const struct dmi_header *dm)
{
- const u8 *data = (const u8 *) dm;
- u32 flags = IORESOURCE_IO;
- unsigned long base_addr;
- u8 len = dm->length;
- u8 slave_addr;
- int irq = 0, offset;
- int type;
+ const u8 *data = (const u8 *) dm;
+ int space = IPMI_IO_ADDR_SPACE;
+ unsigned long base_addr;
+ u8 len = dm->length;
+ u8 slave_addr;
+ int irq = 0, offset = 0;
+ int type;
if (len < DMI_IPMI_MIN_LENGTH)
return;
@@ -218,8 +146,7 @@ static void __init dmi_decode_ipmi(const struct dmi_header *dm)
}
if (len >= DMI_IPMI_VER2_LENGTH) {
if (type == IPMI_DMI_TYPE_SSIF) {
- offset = 0;
- flags = 0;
+ space = 0; /* Match I2C interface 0. */
base_addr = data[DMI_IPMI_ADDR] >> 1;
if (base_addr == 0) {
/*
@@ -236,7 +163,7 @@ static void __init dmi_decode_ipmi(const struct dmi_header *dm)
base_addr &= DMI_IPMI_IO_MASK;
} else {
/* Memory */
- flags = IORESOURCE_MEM;
+ space = IPMI_MEM_ADDR_SPACE;
}
/*
@@ -280,7 +207,7 @@ static void __init dmi_decode_ipmi(const struct dmi_header *dm)
offset = 1;
}
- dmi_add_platform_ipmi(base_addr, flags, slave_addr, irq,
+ dmi_add_platform_ipmi(base_addr, space, slave_addr, irq,
offset, type);
}
diff --git a/drivers/char/ipmi/ipmi_dmi.h b/drivers/char/ipmi/ipmi_dmi.h
index 8d2b094db8e6..2dbec0461d0c 100644
--- a/drivers/char/ipmi/ipmi_dmi.h
+++ b/drivers/char/ipmi/ipmi_dmi.h
@@ -4,6 +4,6 @@
*/
#ifdef CONFIG_IPMI_DMI_DECODE
-int ipmi_dmi_get_slave_addr(enum si_type si_type, u32 flags,
+int ipmi_dmi_get_slave_addr(enum si_type si_type, unsigned int space,
unsigned long base_addr);
#endif
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index c518659b4d9f..e8ba67834746 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -529,9 +529,27 @@ struct ipmi_smi {
unsigned int waiting_events_count; /* How many events in queue? */
char delivering_events;
char event_msg_printed;
+
+ /* How many users are waiting for events? */
atomic_t event_waiters;
unsigned int ticks_to_req_ev;
- int last_needs_timer;
+
+ spinlock_t watch_lock; /* For dealing with watch stuff below. */
+
+ /* How many users are waiting for commands? */
+ unsigned int command_waiters;
+
+ /* How many users are waiting for watchdogs? */
+ unsigned int watchdog_waiters;
+
+ /* How many users are waiting for message responses? */
+ unsigned int response_waiters;
+
+ /*
+ * Tells what the lower layer has last been asked to watch for,
+ * messages and/or watchdogs. Protected by watch_lock.
+ */
+ unsigned int last_watch_mask;
/*
* The event receiver for my BMC, only really used at panic
@@ -925,6 +943,64 @@ static void deliver_err_response(struct ipmi_smi *intf,
deliver_local_response(intf, msg);
}
+static void smi_add_watch(struct ipmi_smi *intf, unsigned int flags)
+{
+ unsigned long iflags;
+
+ if (!intf->handlers->set_need_watch)
+ return;
+
+ spin_lock_irqsave(&intf->watch_lock, iflags);
+ if (flags & IPMI_WATCH_MASK_CHECK_MESSAGES)
+ intf->response_waiters++;
+
+ if (flags & IPMI_WATCH_MASK_CHECK_WATCHDOG)
+ intf->watchdog_waiters++;
+
+ if (flags & IPMI_WATCH_MASK_CHECK_COMMANDS)
+ intf->command_waiters++;
+
+ if ((intf->last_watch_mask & flags) != flags) {
+ intf->last_watch_mask |= flags;
+ intf->handlers->set_need_watch(intf->send_info,
+ intf->last_watch_mask);
+ }
+ spin_unlock_irqrestore(&intf->watch_lock, iflags);
+}
+
+static void smi_remove_watch(struct ipmi_smi *intf, unsigned int flags)
+{
+ unsigned long iflags;
+
+ if (!intf->handlers->set_need_watch)
+ return;
+
+ spin_lock_irqsave(&intf->watch_lock, iflags);
+ if (flags & IPMI_WATCH_MASK_CHECK_MESSAGES)
+ intf->response_waiters--;
+
+ if (flags & IPMI_WATCH_MASK_CHECK_WATCHDOG)
+ intf->watchdog_waiters--;
+
+ if (flags & IPMI_WATCH_MASK_CHECK_COMMANDS)
+ intf->command_waiters--;
+
+ flags = 0;
+ if (intf->response_waiters)
+ flags |= IPMI_WATCH_MASK_CHECK_MESSAGES;
+ if (intf->watchdog_waiters)
+ flags |= IPMI_WATCH_MASK_CHECK_WATCHDOG;
+ if (intf->command_waiters)
+ flags |= IPMI_WATCH_MASK_CHECK_COMMANDS;
+
+ if (intf->last_watch_mask != flags) {
+ intf->last_watch_mask = flags;
+ intf->handlers->set_need_watch(intf->send_info,
+ intf->last_watch_mask);
+ }
+ spin_unlock_irqrestore(&intf->watch_lock, iflags);
+}
+
/*
* Find the next sequence number not being used and add the given
* message with the given timeout to the sequence table. This must be
@@ -968,6 +1044,7 @@ static int intf_next_seq(struct ipmi_smi *intf,
*seq = i;
*seqid = intf->seq_table[i].seqid;
intf->curr_seq = (i+1)%IPMI_IPMB_NUM_SEQ;
+ smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
need_waiter(intf);
} else {
rv = -EAGAIN;
@@ -1006,6 +1083,7 @@ static int intf_find_seq(struct ipmi_smi *intf,
&& (ipmi_addr_equal(addr, &msg->addr))) {
*recv_msg = msg;
intf->seq_table[seq].inuse = 0;
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
rv = 0;
}
}
@@ -1067,6 +1145,7 @@ static int intf_err_seq(struct ipmi_smi *intf,
struct seq_table *ent = &intf->seq_table[seq];
ent->inuse = 0;
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
msg = ent->recv_msg;
rv = 0;
}
@@ -1078,7 +1157,6 @@ static int intf_err_seq(struct ipmi_smi *intf,
return rv;
}
-
int ipmi_create_user(unsigned int if_num,
const struct ipmi_user_hndl *handler,
void *handler_data,
@@ -1139,11 +1217,9 @@ int ipmi_create_user(unsigned int if_num,
spin_lock_irqsave(&intf->seq_lock, flags);
list_add_rcu(&new_user->link, &intf->users);
spin_unlock_irqrestore(&intf->seq_lock, flags);
- if (handler->ipmi_watchdog_pretimeout) {
+ if (handler->ipmi_watchdog_pretimeout)
/* User wants pretimeouts, so make sure to watch for them. */
- if (atomic_inc_return(&intf->event_waiters) == 1)
- need_waiter(intf);
- }
+ smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_WATCHDOG);
srcu_read_unlock(&ipmi_interfaces_srcu, index);
*user = new_user;
return 0;
@@ -1214,7 +1290,7 @@ static void _ipmi_destroy_user(struct ipmi_user *user)
user->handler->shutdown(user->handler_data);
if (user->handler->ipmi_watchdog_pretimeout)
- atomic_dec(&intf->event_waiters);
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_WATCHDOG);
if (user->gets_events)
atomic_dec(&intf->event_waiters);
@@ -1227,6 +1303,7 @@ static void _ipmi_destroy_user(struct ipmi_user *user)
if (intf->seq_table[i].inuse
&& (intf->seq_table[i].recv_msg->user == user)) {
intf->seq_table[i].inuse = 0;
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
ipmi_free_recv_msg(intf->seq_table[i].recv_msg);
}
}
@@ -1569,8 +1646,7 @@ int ipmi_register_for_cmd(struct ipmi_user *user,
goto out_unlock;
}
- if (atomic_inc_return(&intf->event_waiters) == 1)
- need_waiter(intf);
+ smi_add_watch(intf, IPMI_WATCH_MASK_CHECK_COMMANDS);
list_add_rcu(&rcvr->link, &intf->cmd_rcvrs);
@@ -1620,7 +1696,7 @@ int ipmi_unregister_for_cmd(struct ipmi_user *user,
synchronize_rcu();
release_ipmi_user(user, index);
while (rcvrs) {
- atomic_dec(&intf->event_waiters);
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_COMMANDS);
rcvr = rcvrs;
rcvrs = rcvr->next;
kfree(rcvr);
@@ -1737,22 +1813,19 @@ static struct ipmi_smi_msg *smi_add_send_msg(struct ipmi_smi *intf,
return smi_msg;
}
-
static void smi_send(struct ipmi_smi *intf,
const struct ipmi_smi_handlers *handlers,
struct ipmi_smi_msg *smi_msg, int priority)
{
int run_to_completion = intf->run_to_completion;
+ unsigned long flags = 0;
- if (run_to_completion) {
- smi_msg = smi_add_send_msg(intf, smi_msg, priority);
- } else {
- unsigned long flags;
-
+ if (!run_to_completion)
spin_lock_irqsave(&intf->xmit_msgs_lock, flags);
- smi_msg = smi_add_send_msg(intf, smi_msg, priority);
+ smi_msg = smi_add_send_msg(intf, smi_msg, priority);
+
+ if (!run_to_completion)
spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
- }
if (smi_msg)
handlers->sender(intf->send_info, smi_msg);
@@ -2676,7 +2749,7 @@ static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
if (!guid_set)
return -ENOENT;
- return snprintf(buf, 38, "%pUl\n", guid.b);
+ return snprintf(buf, UUID_STRING_LEN + 1 + 1, "%pUl\n", &guid);
}
static DEVICE_ATTR_RO(guid);
@@ -3075,15 +3148,15 @@ static void guid_handler(struct ipmi_smi *intf, struct ipmi_recv_msg *msg)
goto out;
}
- if (msg->msg.data_len < 17) {
+ if (msg->msg.data_len < UUID_SIZE + 1) {
bmc->dyn_guid_set = 0;
dev_warn(intf->si_dev,
- "The GUID response from the BMC was too short, it was %d but should have been 17. Assuming GUID is not available.\n",
- msg->msg.data_len);
+ "The GUID response from the BMC was too short, it was %d but should have been %d. Assuming GUID is not available.\n",
+ msg->msg.data_len, UUID_SIZE + 1);
goto out;
}
- memcpy(bmc->fetch_guid.b, msg->msg.data + 1, 16);
+ guid_copy(&bmc->fetch_guid, (guid_t *)(msg->msg.data + 1));
/*
* Make sure the guid data is available before setting
* dyn_guid_set.
@@ -3350,6 +3423,7 @@ int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
INIT_LIST_HEAD(&intf->xmit_msgs);
INIT_LIST_HEAD(&intf->hp_xmit_msgs);
spin_lock_init(&intf->events_lock);
+ spin_lock_init(&intf->watch_lock);
atomic_set(&intf->event_waiters, 0);
intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
INIT_LIST_HEAD(&intf->waiting_events);
@@ -4365,6 +4439,7 @@ static void smi_recv_tasklet(unsigned long val)
intf->curr_msg = newmsg;
}
}
+
if (!run_to_completion)
spin_unlock_irqrestore(&intf->xmit_msgs_lock, flags);
if (newmsg)
@@ -4492,7 +4567,7 @@ static void check_msg_timeout(struct ipmi_smi *intf, struct seq_table *ent,
struct list_head *timeouts,
unsigned long timeout_period,
int slot, unsigned long *flags,
- unsigned int *waiting_msgs)
+ bool *need_timer)
{
struct ipmi_recv_msg *msg;
@@ -4504,13 +4579,14 @@ static void check_msg_timeout(struct ipmi_smi *intf, struct seq_table *ent,
if (timeout_period < ent->timeout) {
ent->timeout -= timeout_period;
- (*waiting_msgs)++;
+ *need_timer = true;
return;
}
if (ent->retries_left == 0) {
/* The message has used all its retries. */
ent->inuse = 0;
+ smi_remove_watch(intf, IPMI_WATCH_MASK_CHECK_MESSAGES);
msg = ent->recv_msg;
list_add_tail(&msg->link, timeouts);
if (ent->broadcast)
@@ -4523,7 +4599,7 @@ static void check_msg_timeout(struct ipmi_smi *intf, struct seq_table *ent,
struct ipmi_smi_msg *smi_msg;
/* More retries, send again. */
- (*waiting_msgs)++;
+ *need_timer = true;
/*
* Start with the max timer, set to normal timer after
@@ -4568,20 +4644,20 @@ static void check_msg_timeout(struct ipmi_smi *intf, struct seq_table *ent,
}
}
-static unsigned int ipmi_timeout_handler(struct ipmi_smi *intf,
- unsigned long timeout_period)
+static bool ipmi_timeout_handler(struct ipmi_smi *intf,
+ unsigned long timeout_period)
{
struct list_head timeouts;
struct ipmi_recv_msg *msg, *msg2;
unsigned long flags;
int i;
- unsigned int waiting_msgs = 0;
+ bool need_timer = false;
if (!intf->bmc_registered) {
kref_get(&intf->refcount);
if (!schedule_work(&intf->bmc_reg_work)) {
kref_put(&intf->refcount, intf_free);
- waiting_msgs++;
+ need_timer = true;
}
}
@@ -4601,7 +4677,7 @@ static unsigned int ipmi_timeout_handler(struct ipmi_smi *intf,
for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++)
check_msg_timeout(intf, &intf->seq_table[i],
&timeouts, timeout_period, i,
- &flags, &waiting_msgs);
+ &flags, &need_timer);
spin_unlock_irqrestore(&intf->seq_lock, flags);
list_for_each_entry_safe(msg, msg2, &timeouts, link)
@@ -4632,7 +4708,7 @@ static unsigned int ipmi_timeout_handler(struct ipmi_smi *intf,
tasklet_schedule(&intf->recv_tasklet);
- return waiting_msgs;
+ return need_timer;
}
static void ipmi_request_event(struct ipmi_smi *intf)
@@ -4652,37 +4728,28 @@ static atomic_t stop_operation;
static void ipmi_timeout(struct timer_list *unused)
{
struct ipmi_smi *intf;
- int nt = 0, index;
+ bool need_timer = false;
+ int index;
if (atomic_read(&stop_operation))
return;
index = srcu_read_lock(&ipmi_interfaces_srcu);
list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
- int lnt = 0;
-
if (atomic_read(&intf->event_waiters)) {
intf->ticks_to_req_ev--;
if (intf->ticks_to_req_ev == 0) {
ipmi_request_event(intf);
intf->ticks_to_req_ev = IPMI_REQUEST_EV_TIME;
}
- lnt++;
+ need_timer = true;
}
- lnt += ipmi_timeout_handler(intf, IPMI_TIMEOUT_TIME);
-
- lnt = !!lnt;
- if (lnt != intf->last_needs_timer &&
- intf->handlers->set_need_watch)
- intf->handlers->set_need_watch(intf->send_info, lnt);
- intf->last_needs_timer = lnt;
-
- nt += lnt;
+ need_timer |= ipmi_timeout_handler(intf, IPMI_TIMEOUT_TIME);
}
srcu_read_unlock(&ipmi_interfaces_srcu, index);
- if (nt)
+ if (need_timer)
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
}
diff --git a/drivers/char/ipmi/ipmi_plat_data.c b/drivers/char/ipmi/ipmi_plat_data.c
new file mode 100644
index 000000000000..8f0ca2a848eb
--- /dev/null
+++ b/drivers/char/ipmi/ipmi_plat_data.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Add an IPMI platform device.
+ */
+
+#include <linux/platform_device.h>
+#include "ipmi_plat_data.h"
+#include "ipmi_si.h"
+
+struct platform_device *ipmi_platform_add(const char *name, unsigned int inst,
+ struct ipmi_plat_data *p)
+{
+ struct platform_device *pdev;
+ unsigned int num_r = 1, size, pidx = 0;
+ struct resource r[4];
+ struct property_entry pr[6];
+ u32 flags;
+ int rv;
+
+ memset(pr, 0, sizeof(pr));
+ memset(r, 0, sizeof(r));
+
+ if (p->type == SI_BT)
+ size = 3;
+ else if (p->type == SI_TYPE_INVALID)
+ size = 0;
+ else
+ size = 2;
+
+ if (p->regsize == 0)
+ p->regsize = DEFAULT_REGSIZE;
+ if (p->regspacing == 0)
+ p->regspacing = p->regsize;
+
+ pr[pidx++] = PROPERTY_ENTRY_U8("ipmi-type", p->type);
+ if (p->slave_addr)
+ pr[pidx++] = PROPERTY_ENTRY_U8("slave-addr", p->slave_addr);
+ pr[pidx++] = PROPERTY_ENTRY_U8("addr-source", p->addr_source);
+ if (p->regshift)
+ pr[pidx++] = PROPERTY_ENTRY_U8("reg-shift", p->regshift);
+ pr[pidx++] = PROPERTY_ENTRY_U8("reg-size", p->regsize);
+ /* Last entry must be left NULL to terminate it. */
+
+ pdev = platform_device_alloc(name, inst);
+ if (!pdev) {
+ pr_err("Error allocating IPMI platform device %s.%d\n",
+ name, inst);
+ return NULL;
+ }
+
+ if (size == 0)
+ /* An invalid or SSIF interface, no resources. */
+ goto add_properties;
+
+ /*
+ * Register spacing is derived from the resources in
+ * the IPMI platform code.
+ */
+
+ if (p->space == IPMI_IO_ADDR_SPACE)
+ flags = IORESOURCE_IO;
+ else
+ flags = IORESOURCE_MEM;
+
+ r[0].start = p->addr;
+ r[0].end = r[0].start + p->regsize - 1;
+ r[0].name = "IPMI Address 1";
+ r[0].flags = flags;
+
+ if (size > 1) {
+ r[1].start = r[0].start + p->regspacing;
+ r[1].end = r[1].start + p->regsize - 1;
+ r[1].name = "IPMI Address 2";
+ r[1].flags = flags;
+ num_r++;
+ }
+
+ if (size > 2) {
+ r[2].start = r[1].start + p->regspacing;
+ r[2].end = r[2].start + p->regsize - 1;
+ r[2].name = "IPMI Address 3";
+ r[2].flags = flags;
+ num_r++;
+ }
+
+ if (p->irq) {
+ r[num_r].start = p->irq;
+ r[num_r].end = p->irq;
+ r[num_r].name = "IPMI IRQ";
+ r[num_r].flags = IORESOURCE_IRQ;
+ num_r++;
+ }
+
+ rv = platform_device_add_resources(pdev, r, num_r);
+ if (rv) {
+ dev_err(&pdev->dev,
+ "Unable to add hard-code resources: %d\n", rv);
+ goto err;
+ }
+ add_properties:
+ rv = platform_device_add_properties(pdev, pr);
+ if (rv) {
+ dev_err(&pdev->dev,
+ "Unable to add hard-code properties: %d\n", rv);
+ goto err;
+ }
+
+ rv = platform_device_add(pdev);
+ if (rv) {
+ dev_err(&pdev->dev,
+ "Unable to add hard-code device: %d\n", rv);
+ goto err;
+ }
+ return pdev;
+
+err:
+ platform_device_put(pdev);
+ return NULL;
+}
+EXPORT_SYMBOL(ipmi_platform_add);
diff --git a/drivers/char/ipmi/ipmi_plat_data.h b/drivers/char/ipmi/ipmi_plat_data.h
new file mode 100644
index 000000000000..567cfcec8ada
--- /dev/null
+++ b/drivers/char/ipmi/ipmi_plat_data.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+/*
+ * Generic code to add IPMI platform devices.
+ */
+
+#include <linux/ipmi.h>
+
+struct ipmi_plat_data {
+ unsigned int type; /* si_type for si, SI_INVALID for others */
+ unsigned int space; /* addr_space for si, intf# for ssif. */
+ unsigned long addr;
+ unsigned int regspacing;
+ unsigned int regsize;
+ unsigned int regshift;
+ unsigned int irq;
+ unsigned int slave_addr;
+ enum ipmi_addr_src addr_source;
+};
+
+struct platform_device *ipmi_platform_add(const char *name, unsigned int inst,
+ struct ipmi_plat_data *p);
diff --git a/drivers/char/ipmi/ipmi_si.h b/drivers/char/ipmi/ipmi_si.h
index 52f6152d1fcb..357a229c9012 100644
--- a/drivers/char/ipmi/ipmi_si.h
+++ b/drivers/char/ipmi/ipmi_si.h
@@ -7,11 +7,9 @@
*/
#include <linux/interrupt.h>
+#include <linux/platform_device.h>
#include "ipmi_si_sm.h"
-#define IPMI_IO_ADDR_SPACE 0
-#define IPMI_MEM_ADDR_SPACE 1
-
#define DEFAULT_REGSPACING 1
#define DEFAULT_REGSIZE 1
@@ -23,11 +21,15 @@ void ipmi_irq_start_cleanup(struct si_sm_io *io);
int ipmi_std_irq_setup(struct si_sm_io *io);
void ipmi_irq_finish_setup(struct si_sm_io *io);
int ipmi_si_remove_by_dev(struct device *dev);
-void ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
- unsigned long addr);
-int ipmi_si_hardcode_find_bmc(void);
+struct device *ipmi_si_remove_by_data(int addr_space, enum si_type si_type,
+ unsigned long addr);
+void ipmi_hardcode_init(void);
+void ipmi_si_hardcode_exit(void);
+void ipmi_si_hotmod_exit(void);
+int ipmi_si_hardcode_match(int addr_space, unsigned long addr);
void ipmi_si_platform_init(void);
void ipmi_si_platform_shutdown(void);
+void ipmi_remove_platform_device_by_name(char *name);
extern struct platform_driver ipmi_platform_driver;
diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c
index 487642809c58..01946cad3d13 100644
--- a/drivers/char/ipmi/ipmi_si_hardcode.c
+++ b/drivers/char/ipmi/ipmi_si_hardcode.c
@@ -3,7 +3,9 @@
#define pr_fmt(fmt) "ipmi_hardcode: " fmt
#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
#include "ipmi_si.h"
+#include "ipmi_plat_data.h"
/*
* There can be 4 IO ports passed in (with or without IRQs), 4 addresses,
@@ -12,23 +14,22 @@
#define SI_MAX_PARMS 4
-static char *si_type[SI_MAX_PARMS];
#define MAX_SI_TYPE_STR 30
-static char si_type_str[MAX_SI_TYPE_STR];
+static char si_type_str[MAX_SI_TYPE_STR] __initdata;
static unsigned long addrs[SI_MAX_PARMS];
static unsigned int num_addrs;
static unsigned int ports[SI_MAX_PARMS];
static unsigned int num_ports;
-static int irqs[SI_MAX_PARMS];
-static unsigned int num_irqs;
-static int regspacings[SI_MAX_PARMS];
-static unsigned int num_regspacings;
-static int regsizes[SI_MAX_PARMS];
-static unsigned int num_regsizes;
-static int regshifts[SI_MAX_PARMS];
-static unsigned int num_regshifts;
-static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */
-static unsigned int num_slave_addrs;
+static int irqs[SI_MAX_PARMS] __initdata;
+static unsigned int num_irqs __initdata;
+static int regspacings[SI_MAX_PARMS] __initdata;
+static unsigned int num_regspacings __initdata;
+static int regsizes[SI_MAX_PARMS] __initdata;
+static unsigned int num_regsizes __initdata;
+static int regshifts[SI_MAX_PARMS] __initdata;
+static unsigned int num_regshifts __initdata;
+static int slave_addrs[SI_MAX_PARMS] __initdata;
+static unsigned int num_slave_addrs __initdata;
module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0);
MODULE_PARM_DESC(type, "Defines the type of each interface, each"
@@ -73,12 +74,49 @@ MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for"
" overridden by this parm. This is an array indexed"
" by interface number.");
-int ipmi_si_hardcode_find_bmc(void)
+static void __init ipmi_hardcode_init_one(const char *si_type_str,
+ unsigned int i,
+ unsigned long addr,
+ enum ipmi_addr_space addr_space)
{
- int ret = -ENODEV;
- int i;
- struct si_sm_io io;
+ struct ipmi_plat_data p;
+
+ memset(&p, 0, sizeof(p));
+
+ if (!si_type_str || !*si_type_str || strcmp(si_type_str, "kcs") == 0) {
+ p.type = SI_KCS;
+ } else if (strcmp(si_type_str, "smic") == 0) {
+ p.type = SI_SMIC;
+ } else if (strcmp(si_type_str, "bt") == 0) {
+ p.type = SI_BT;
+ } else if (strcmp(si_type_str, "invalid") == 0) {
+ /*
+ * Allow a firmware-specified interface to be
+ * disabled.
+ */
+ p.type = SI_TYPE_INVALID;
+ } else {
+ pr_warn("Interface type specified for interface %d, was invalid: %s\n",
+ i, si_type_str);
+ return;
+ }
+
+ p.regsize = regsizes[i];
+ p.slave_addr = slave_addrs[i];
+ p.addr_source = SI_HARDCODED;
+ p.regshift = regshifts[i];
+ p.regsize = regsizes[i];
+ p.addr = addr;
+ p.space = addr_space;
+
+ ipmi_platform_add("hardcode-ipmi-si", i, &p);
+}
+
+void __init ipmi_hardcode_init(void)
+{
+ unsigned int i;
char *str;
+ char *si_type[SI_MAX_PARMS];
/* Parse out the si_type string into its components. */
str = si_type_str;
@@ -95,54 +