Commit fdbeb7de authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Linus Torvalds
Browse files

BMC support for PARISC machines 



The last line of PARISC machines (C8000, RP34x0, etc.) have a BMC for
controlling temperature, fan speed and other stuff.  The BMC is
connected via a special bus and listed in the firmware device tree.
This change adds support for these BMCs to the IPMI driver.

Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarCorey Minyard <cminyard@mvista.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a798e2d2

drivers/char/ipmi/ipmi_si_intf.c

+75 −0
Original line number Diff line number Diff line
@@ -71,6 +71,11 @@ 
#include <linux/of_address.h>

#include <linux/of_irq.h>



#ifdef CONFIG_PARISC

#include <asm/hardware.h>	/* for register_parisc_driver() stuff */

#include <asm/parisc-device.h>

#endif



#define PFX "ipmi_si: "



/* Measure times between events in the driver. */
@@ -298,6 +303,9 @@ static int pci_registered; 
#ifdef CONFIG_ACPI

static int pnp_registered;

#endif

#ifdef CONFIG_PARISC

static int parisc_registered;

#endif



static unsigned int kipmid_max_busy_us[SI_MAX_PARMS];

static int num_max_busy_us;
@@ -2699,6 +2707,62 @@ static struct platform_driver ipmi_driver = { 
	.remove		= ipmi_remove,

};



#ifdef CONFIG_PARISC

static int ipmi_parisc_probe(struct parisc_device *dev)

{

	struct smi_info *info;



	info = smi_info_alloc();



	if (!info) {

		dev_err(&dev->dev,

			"could not allocate memory for PARISC probe\n");

		return -ENOMEM;

	}



	info->si_type		= SI_KCS;

	info->addr_source	= SI_DEVICETREE;

	info->io_setup		= mem_setup;

	info->io.addr_type	= IPMI_MEM_ADDR_SPACE;

	info->io.addr_data	= dev->hpa.start;

	info->io.regsize	= 1;

	info->io.regspacing	= 1;

	info->io.regshift	= 0;

	info->irq		= 0; /* no interrupt */

	info->irq_setup		= NULL;

	info->dev		= &dev->dev;



	dev_dbg(&dev->dev, "addr 0x%lx\n", info->io.addr_data);



	dev_set_drvdata(&dev->dev, info);



	if (add_smi(info)) {

		kfree(info);

		return -EBUSY;

	}



	return 0;

}



static int ipmi_parisc_remove(struct parisc_device *dev)

{

	cleanup_one_si(dev_get_drvdata(&dev->dev));

	return 0;

}



static struct parisc_device_id ipmi_parisc_tbl[] = {

	{ HPHW_MC, HVERSION_REV_ANY_ID, 0x004, 0xC0 },

	{ 0, }

};



static struct parisc_driver ipmi_parisc_driver = {

	.name =		"ipmi",

	.id_table =	ipmi_parisc_tbl,

	.probe =	ipmi_parisc_probe,

	.remove =	ipmi_parisc_remove,

};

#endif /* CONFIG_PARISC */



static int wait_for_msg_done(struct smi_info *smi_info)

{

	enum si_sm_result     smi_result;
@@ -3464,6 +3528,13 @@ static int init_ipmi_si(void) 
		spmi_find_bmc();

#endif



#ifdef CONFIG_PARISC

	register_parisc_driver(&ipmi_parisc_driver);

	parisc_registered = 1;

	/* poking PC IO addresses will crash machine, don't do it */

	si_trydefaults = 0;

#endif



	/* We prefer devices with interrupts, but in the case of a machine

	   with multiple BMCs we assume that there will be several instances

	   of a given type so if we succeed in registering a type then also
@@ -3610,6 +3681,10 @@ static void cleanup_ipmi_si(void) 
	if (pnp_registered)

		pnp_unregister_driver(&ipmi_pnp_driver);

#endif

#ifdef CONFIG_PARISC

	if (parisc_registered)

		unregister_parisc_driver(&ipmi_parisc_driver);

#endif



	platform_driver_unregister(&ipmi_driver);

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