Commit 2d6be4ab authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmi 

Pull IPMI updates from Corey Minyard:
 "This is a few small fixes to the main IPMI driver, make some things
  const, fix typos, etc.

  The last patch came in about a week ago, but IMHO it's best to go in
  now. It is not for the main driver, it's for the bt-bmc driver, which
  runs on the managment controller side, not on the host side, so the
  scope is limited and the change is necessary"

* tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: bt-bmc: Use a regmap for register access
  char: ipmi: constify ipmi_smi_handlers structures
  acpi:ipmi: Make IPMI user handler const
  ipmi: make ipmi_usr_hndl const
  Documentation: Fix a typo in IPMI.txt.
parents cf393195 eb994594

Documentation/IPMI.txt

+1 −1
Original line number Diff line number Diff line
@@ -257,7 +257,7 @@ and tell you when they come and go. 


Creating the User



To user the message handler, you must first create a user using

To use the message handler, you must first create a user using

ipmi_create_user.  The interface number specifies which SMI you want

to connect to, and you must supply callback functions to be called

when data comes in.  The callback function can run at interrupt level,

drivers/acpi/acpi_ipmi.c

+1 −1
Original line number Diff line number Diff line
@@ -56,7 +56,7 @@ struct acpi_ipmi_device { 
struct ipmi_driver_data {

	struct list_head ipmi_devices;

	struct ipmi_smi_watcher bmc_events;

	struct ipmi_user_hndl ipmi_hndlrs;

	const struct ipmi_user_hndl ipmi_hndlrs;

	struct mutex ipmi_lock;



	/*

drivers/char/ipmi/Kconfig

+2 −1
Original line number Diff line number Diff line
@@ -78,7 +78,8 @@ config IPMI_POWEROFF 
endif # IPMI_HANDLER



config ASPEED_BT_IPMI_BMC

	depends on ARCH_ASPEED

	depends on ARCH_ASPEED || COMPILE_TEST

       depends on REGMAP && REGMAP_MMIO && MFD_SYSCON

	tristate "BT IPMI bmc driver"

	help

	  Provides a driver for the BT (Block Transfer) IPMI interface

drivers/char/ipmi/bt-bmc.c

+59 −21
Original line number Diff line number Diff line
@@ -12,10 +12,13 @@ 
#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/mfd/syscon.h>

#include <linux/miscdevice.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/poll.h>

#include <linux/regmap.h>

#include <linux/sched.h>

#include <linux/timer.h>
@@ -60,7 +63,8 @@ 
struct bt_bmc {

	struct device		dev;

	struct miscdevice	miscdev;

	void __iomem		*base;

	struct regmap		*map;

	int			offset;

	int			irq;

	wait_queue_head_t	queue;

	struct timer_list	poll_timer;
@@ -69,14 +73,29 @@ struct bt_bmc { 


static atomic_t open_count = ATOMIC_INIT(0);



static const struct regmap_config bt_regmap_cfg = {

	.reg_bits = 32,

	.val_bits = 32,

	.reg_stride = 4,

};



static u8 bt_inb(struct bt_bmc *bt_bmc, int reg)

{

	return ioread8(bt_bmc->base + reg);

	uint32_t val = 0;

	int rc;



	rc = regmap_read(bt_bmc->map, bt_bmc->offset + reg, &val);

	WARN(rc != 0, "regmap_read() failed: %d\n", rc);



	return rc == 0 ? (u8) val : 0;

}



static void bt_outb(struct bt_bmc *bt_bmc, u8 data, int reg)

{

	iowrite8(data, bt_bmc->base + reg);

	int rc;



	rc = regmap_write(bt_bmc->map, bt_bmc->offset + reg, data);

	WARN(rc != 0, "regmap_write() failed: %d\n", rc);

}



static void clr_rd_ptr(struct bt_bmc *bt_bmc)
@@ -367,14 +386,18 @@ static irqreturn_t bt_bmc_irq(int irq, void *arg) 
{

	struct bt_bmc *bt_bmc = arg;

	u32 reg;

	int rc;



	rc = regmap_read(bt_bmc->map, bt_bmc->offset + BT_CR2, &reg);

	if (rc)

		return IRQ_NONE;



	reg = ioread32(bt_bmc->base + BT_CR2);

	reg &= BT_CR2_IRQ_H2B | BT_CR2_IRQ_HBUSY;

	if (!reg)

		return IRQ_NONE;



	/* ack pending IRQs */

	iowrite32(reg, bt_bmc->base + BT_CR2);

	regmap_write(bt_bmc->map, bt_bmc->offset + BT_CR2, reg);



	wake_up(&bt_bmc->queue);

	return IRQ_HANDLED;
@@ -384,7 +407,6 @@ static int bt_bmc_config_irq(struct bt_bmc *bt_bmc, 
			     struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	u32 reg;

	int rc;



	bt_bmc->irq = platform_get_irq(pdev, 0);
@@ -405,18 +427,17 @@ static int bt_bmc_config_irq(struct bt_bmc *bt_bmc, 
	 * will be cleared (along with B2H) when we can write the next

	 * message to the BT buffer

	 */

	reg = ioread32(bt_bmc->base + BT_CR1);

	reg |= BT_CR1_IRQ_H2B | BT_CR1_IRQ_HBUSY;

	iowrite32(reg, bt_bmc->base + BT_CR1);

	rc = regmap_update_bits(bt_bmc->map, bt_bmc->offset + BT_CR1,

				(BT_CR1_IRQ_H2B | BT_CR1_IRQ_HBUSY),

				(BT_CR1_IRQ_H2B | BT_CR1_IRQ_HBUSY));



	return 0;

	return rc;

}



static int bt_bmc_probe(struct platform_device *pdev)

{

	struct bt_bmc *bt_bmc;

	struct device *dev;

	struct resource *res;

	int rc;



	if (!pdev || !pdev->dev.of_node)
@@ -431,10 +452,27 @@ static int bt_bmc_probe(struct platform_device *pdev) 


	dev_set_drvdata(&pdev->dev, bt_bmc);



	bt_bmc->map = syscon_node_to_regmap(pdev->dev.parent->of_node);

	if (IS_ERR(bt_bmc->map)) {

		struct resource *res;

		void __iomem *base;



		/*

		 * Assume it's not the MFD-based devicetree description, in

		 * which case generate a regmap ourselves

		 */

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	bt_bmc->base = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(bt_bmc->base))

		return PTR_ERR(bt_bmc->base);

		base = devm_ioremap_resource(&pdev->dev, res);

		if (IS_ERR(base))

			return PTR_ERR(base);



		bt_bmc->map = devm_regmap_init_mmio(dev, base, &bt_regmap_cfg);

		bt_bmc->offset = 0;

	} else {

		rc = of_property_read_u32(dev->of_node, "reg", &bt_bmc->offset);

		if (rc)

			return rc;

	}



	mutex_init(&bt_bmc->mutex);

	init_waitqueue_head(&bt_bmc->queue);
@@ -461,12 +499,12 @@ static int bt_bmc_probe(struct platform_device *pdev) 
		add_timer(&bt_bmc->poll_timer);

	}



	iowrite32((BT_IO_BASE << BT_CR0_IO_BASE) |

	regmap_write(bt_bmc->map, bt_bmc->offset + BT_CR0,

		     (BT_IO_BASE << BT_CR0_IO_BASE) |

		     (BT_IRQ << BT_CR0_IRQ) |

		     BT_CR0_EN_CLR_SLV_RDP |

		     BT_CR0_EN_CLR_SLV_WRP |

		  BT_CR0_ENABLE_IBT,

		  bt_bmc->base + BT_CR0);

		     BT_CR0_ENABLE_IBT);



	clr_b_busy(bt_bmc);

drivers/char/ipmi/ipmi_devintf.c

+1 −1
Original line number Diff line number Diff line
@@ -108,7 +108,7 @@ static int ipmi_fasync(int fd, struct file *file, int on) 
	return (result);

}



static struct ipmi_user_hndl ipmi_hndlrs =

static const struct ipmi_user_hndl ipmi_hndlrs =

{

	.ipmi_recv_hndl	= file_receive_handler,

};

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