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-rw-r--r--drivers/char/ipmi/kcs_bmc.c6
-rw-r--r--drivers/char/ipmi/kcs_bmc.h3
-rw-r--r--drivers/char/ipmi/kcs_bmc_aspeed.c150
-rw-r--r--drivers/char/ipmi/kcs_bmc_client.h2
-rw-r--r--drivers/char/ipmi/kcs_bmc_device.h1
-rw-r--r--drivers/char/ipmi/kcs_bmc_npcm7xx.c26
6 files changed, 131 insertions, 57 deletions
diff --git a/drivers/char/ipmi/kcs_bmc.c b/drivers/char/ipmi/kcs_bmc.c
index 9860c7b75157..91eb43746cef 100644
--- a/drivers/char/ipmi/kcs_bmc.c
+++ b/drivers/char/ipmi/kcs_bmc.c
@@ -182,6 +182,12 @@ void kcs_bmc_unregister_driver(struct kcs_bmc_driver *drv)
}
EXPORT_SYMBOL(kcs_bmc_unregister_driver);
+void kcs_bmc_update_event_mask(struct kcs_bmc_device *kcs_bmc, u8 mask, u8 events)
+{
+ kcs_bmc->ops->irq_mask_update(kcs_bmc, mask, events);
+}
+EXPORT_SYMBOL(kcs_bmc_update_event_mask);
+
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Haiyue Wang <haiyue.wang@linux.intel.com>");
MODULE_AUTHOR("Andrew Jeffery <andrew@aj.id.au>");
diff --git a/drivers/char/ipmi/kcs_bmc.h b/drivers/char/ipmi/kcs_bmc.h
index 3f0cce315b4f..fa408b802c79 100644
--- a/drivers/char/ipmi/kcs_bmc.h
+++ b/drivers/char/ipmi/kcs_bmc.h
@@ -8,6 +8,9 @@
#include <linux/list.h>
+#define KCS_BMC_EVENT_TYPE_OBE BIT(0)
+#define KCS_BMC_EVENT_TYPE_IBF BIT(1)
+
#define KCS_BMC_STR_OBF BIT(0)
#define KCS_BMC_STR_IBF BIT(1)
#define KCS_BMC_STR_CMD_DAT BIT(3)
diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c
index 08d4290464d8..5bf8d013e4ae 100644
--- a/drivers/char/ipmi/kcs_bmc_aspeed.c
+++ b/drivers/char/ipmi/kcs_bmc_aspeed.c
@@ -60,10 +60,18 @@
#define LPC_ODR4 0x118
#define LPC_STR4 0x11C
+#define OBE_POLL_PERIOD (HZ / 2)
+
struct aspeed_kcs_bmc {
struct kcs_bmc_device kcs_bmc;
struct regmap *map;
+
+ struct {
+ spinlock_t lock;
+ bool remove;
+ struct timer_list timer;
+ } obe;
};
struct aspeed_kcs_of_ops {
@@ -159,68 +167,89 @@ static void aspeed_kcs_enable_channel(struct kcs_bmc_device *kcs_bmc, bool enabl
switch (kcs_bmc->channel) {
case 1:
- if (enable) {
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF1, LPC_HICR2_IBFIF1);
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC1E, LPC_HICR0_LPC1E);
- } else {
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC1E, 0);
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF1, 0);
- }
- break;
-
+ regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC1E, enable * LPC_HICR0_LPC1E);
+ return;
case 2:
- if (enable) {
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF2, LPC_HICR2_IBFIF2);
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC2E, LPC_HICR0_LPC2E);
- } else {
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC2E, 0);
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF2, 0);
- }
- break;
-
+ regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC2E, enable * LPC_HICR0_LPC2E);
+ return;
case 3:
- if (enable) {
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF3, LPC_HICR2_IBFIF3);
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC3E, LPC_HICR0_LPC3E);
- regmap_update_bits(priv->map, LPC_HICR4,
- LPC_HICR4_KCSENBL, LPC_HICR4_KCSENBL);
- } else {
- regmap_update_bits(priv->map, LPC_HICR0,
- LPC_HICR0_LPC3E, 0);
- regmap_update_bits(priv->map, LPC_HICR4,
- LPC_HICR4_KCSENBL, 0);
- regmap_update_bits(priv->map, LPC_HICR2,
- LPC_HICR2_IBFIF3, 0);
- }
- break;
-
+ regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC3E, enable * LPC_HICR0_LPC3E);
+ regmap_update_bits(priv->map, LPC_HICR4,
+ LPC_HICR4_KCSENBL, enable * LPC_HICR4_KCSENBL);
+ return;
case 4:
- if (enable)
- regmap_update_bits(priv->map, LPC_HICRB,
- LPC_HICRB_IBFIF4 | LPC_HICRB_LPC4E,
- LPC_HICRB_IBFIF4 | LPC_HICRB_LPC4E);
+ regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_LPC4E, enable * LPC_HICRB_LPC4E);
+ return;
+ default:
+ pr_warn("%s: Unsupported channel: %d", __func__, kcs_bmc->channel);
+ return;
+ }
+}
+
+static void aspeed_kcs_check_obe(struct timer_list *timer)
+{
+ struct aspeed_kcs_bmc *priv = container_of(timer, struct aspeed_kcs_bmc, obe.timer);
+ unsigned long flags;
+ u8 str;
+
+ spin_lock_irqsave(&priv->obe.lock, flags);
+ if (priv->obe.remove) {
+ spin_unlock_irqrestore(&priv->obe.lock, flags);
+ return;
+ }
+
+ str = aspeed_kcs_inb(&priv->kcs_bmc, priv->kcs_bmc.ioreg.str);
+ if (str & KCS_BMC_STR_OBF) {
+ mod_timer(timer, jiffies + OBE_POLL_PERIOD);
+ spin_unlock_irqrestore(&priv->obe.lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&priv->obe.lock, flags);
+
+ kcs_bmc_handle_event(&priv->kcs_bmc);
+}
+
+static void aspeed_kcs_irq_mask_update(struct kcs_bmc_device *kcs_bmc, u8 mask, u8 state)
+{
+ struct aspeed_kcs_bmc *priv = to_aspeed_kcs_bmc(kcs_bmc);
+
+ /* We don't have an OBE IRQ, emulate it */
+ if (mask & KCS_BMC_EVENT_TYPE_OBE) {
+ if (KCS_BMC_EVENT_TYPE_OBE & state)
+ mod_timer(&priv->obe.timer, jiffies + OBE_POLL_PERIOD);
else
- regmap_update_bits(priv->map, LPC_HICRB,
- LPC_HICRB_IBFIF4 | LPC_HICRB_LPC4E,
- 0);
- break;
+ del_timer(&priv->obe.timer);
+ }
- default:
- break;
+ if (mask & KCS_BMC_EVENT_TYPE_IBF) {
+ const bool enable = !!(state & KCS_BMC_EVENT_TYPE_IBF);
+
+ switch (kcs_bmc->channel) {
+ case 1:
+ regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIF1,
+ enable * LPC_HICR2_IBFIF1);
+ return;
+ case 2:
+ regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIF2,
+ enable * LPC_HICR2_IBFIF2);
+ return;
+ case 3:
+ regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIF3,
+ enable * LPC_HICR2_IBFIF3);
+ return;
+ case 4:
+ regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_IBFIF4,
+ enable * LPC_HICRB_IBFIF4);
+ return;
+ default:
+ pr_warn("%s: Unsupported channel: %d", __func__, kcs_bmc->channel);
+ return;
+ }
}
}
static const struct kcs_bmc_device_ops aspeed_kcs_ops = {
+ .irq_mask_update = aspeed_kcs_irq_mask_update,
.io_inputb = aspeed_kcs_inb,
.io_outputb = aspeed_kcs_outb,
.io_updateb = aspeed_kcs_updateb,
@@ -375,6 +404,10 @@ static int aspeed_kcs_probe(struct platform_device *pdev)
return -ENODEV;
}
+ spin_lock_init(&priv->obe.lock);
+ priv->obe.remove = false;
+ timer_setup(&priv->obe.timer, aspeed_kcs_check_obe, 0);
+
aspeed_kcs_set_address(kcs_bmc, addr);
rc = aspeed_kcs_config_irq(kcs_bmc, pdev);
@@ -383,6 +416,8 @@ static int aspeed_kcs_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
+ aspeed_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE),
+ KCS_BMC_EVENT_TYPE_IBF);
aspeed_kcs_enable_channel(kcs_bmc, true);
rc = kcs_bmc_add_device(&priv->kcs_bmc);
@@ -403,6 +438,15 @@ static int aspeed_kcs_remove(struct platform_device *pdev)
kcs_bmc_remove_device(kcs_bmc);
+ aspeed_kcs_enable_channel(kcs_bmc, false);
+ aspeed_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), 0);
+
+ /* Make sure it's proper dead */
+ spin_lock_irq(&priv->obe.lock);
+ priv->obe.remove = true;
+ spin_unlock_irq(&priv->obe.lock);
+ del_timer_sync(&priv->obe.timer);
+
return 0;
}
diff --git a/drivers/char/ipmi/kcs_bmc_client.h b/drivers/char/ipmi/kcs_bmc_client.h
index 814ad8e052ef..6fdcde0a7169 100644
--- a/drivers/char/ipmi/kcs_bmc_client.h
+++ b/drivers/char/ipmi/kcs_bmc_client.h
@@ -35,6 +35,8 @@ void kcs_bmc_unregister_driver(struct kcs_bmc_driver *drv);
int kcs_bmc_enable_device(struct kcs_bmc_device *kcs_bmc, struct kcs_bmc_client *client);
void kcs_bmc_disable_device(struct kcs_bmc_device *kcs_bmc, struct kcs_bmc_client *client);
+void kcs_bmc_update_event_mask(struct kcs_bmc_device *kcs_bmc, u8 mask, u8 events);
+
u8 kcs_bmc_read_data(struct kcs_bmc_device *kcs_bmc);
void kcs_bmc_write_data(struct kcs_bmc_device *kcs_bmc, u8 data);
u8 kcs_bmc_read_status(struct kcs_bmc_device *kcs_bmc);
diff --git a/drivers/char/ipmi/kcs_bmc_device.h b/drivers/char/ipmi/kcs_bmc_device.h
index c9a4237bbf40..17c572f25c54 100644
--- a/drivers/char/ipmi/kcs_bmc_device.h
+++ b/drivers/char/ipmi/kcs_bmc_device.h
@@ -9,6 +9,7 @@
#include "kcs_bmc.h"
struct kcs_bmc_device_ops {
+ void (*irq_mask_update)(struct kcs_bmc_device *kcs_bmc, u8 mask, u8 enable);
u8 (*io_inputb)(struct kcs_bmc_device *kcs_bmc, u32 reg);
void (*io_outputb)(struct kcs_bmc_device *kcs_bmc, u32 reg, u8 b);
void (*io_updateb)(struct kcs_bmc_device *kcs_bmc, u32 reg, u8 mask, u8 b);
diff --git a/drivers/char/ipmi/kcs_bmc_npcm7xx.c b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
index 3b96486c25c3..ef81a715f88a 100644
--- a/drivers/char/ipmi/kcs_bmc_npcm7xx.c
+++ b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
@@ -38,6 +38,7 @@
#define KCS2CTL 0x2A
#define KCS3CTL 0x3C
#define KCS_CTL_IBFIE BIT(0)
+#define KCS_CTL_OBEIE BIT(1)
#define KCS1IE 0x1C
#define KCS2IE 0x2E
@@ -117,13 +118,23 @@ static void npcm7xx_kcs_enable_channel(struct kcs_bmc_device *kcs_bmc, bool enab
{
struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc);
- regmap_update_bits(priv->map, priv->reg->ctl, KCS_CTL_IBFIE,
- enable ? KCS_CTL_IBFIE : 0);
-
regmap_update_bits(priv->map, priv->reg->ie, KCS_IE_IRQE | KCS_IE_HIRQE,
enable ? KCS_IE_IRQE | KCS_IE_HIRQE : 0);
}
+static void npcm7xx_kcs_irq_mask_update(struct kcs_bmc_device *kcs_bmc, u8 mask, u8 state)
+{
+ struct npcm7xx_kcs_bmc *priv = to_npcm7xx_kcs_bmc(kcs_bmc);
+
+ if (mask & KCS_BMC_EVENT_TYPE_OBE)
+ regmap_update_bits(priv->map, priv->reg->ctl, KCS_CTL_OBEIE,
+ !!(state & KCS_BMC_EVENT_TYPE_OBE) * KCS_CTL_OBEIE);
+
+ if (mask & KCS_BMC_EVENT_TYPE_IBF)
+ regmap_update_bits(priv->map, priv->reg->ctl, KCS_CTL_IBFIE,
+ !!(state & KCS_BMC_EVENT_TYPE_IBF) * KCS_CTL_IBFIE);
+}
+
static irqreturn_t npcm7xx_kcs_irq(int irq, void *arg)
{
struct kcs_bmc_device *kcs_bmc = arg;
@@ -146,6 +157,7 @@ static int npcm7xx_kcs_config_irq(struct kcs_bmc_device *kcs_bmc,
}
static const struct kcs_bmc_device_ops npcm7xx_kcs_ops = {
+ .irq_mask_update = npcm7xx_kcs_irq_mask_update,
.io_inputb = npcm7xx_kcs_inb,
.io_outputb = npcm7xx_kcs_outb,
.io_updateb = npcm7xx_kcs_updateb,
@@ -186,11 +198,14 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
- npcm7xx_kcs_enable_channel(kcs_bmc, true);
rc = npcm7xx_kcs_config_irq(kcs_bmc, pdev);
if (rc)
return rc;
+ npcm7xx_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE),
+ KCS_BMC_EVENT_TYPE_IBF);
+ npcm7xx_kcs_enable_channel(kcs_bmc, true);
+
rc = kcs_bmc_add_device(kcs_bmc);
if (rc) {
dev_warn(&pdev->dev, "Failed to register channel %d: %d\n", kcs_bmc->channel, rc);
@@ -211,6 +226,9 @@ static int npcm7xx_kcs_remove(struct platform_device *pdev)
kcs_bmc_remove_device(kcs_bmc);
+ npcm7xx_kcs_enable_channel(kcs_bmc, false);
+ npcm7xx_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), 0);
+
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-16 18:40:25 +0000