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BMC support for PARISC machines

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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: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Bogendoerfer 2013-09-05 06:36:36 -05:00 • committed by Linus Torvalds
parent a798e2d2d7
commit fdbeb7de70
1 changed files with 75 additions and 0 deletions
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75
drivers/char/ipmi/ipmi_si_intf.c
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@ -71,6 +71,11 @@
#include <linux/of_address.h> #include <linux/of_address.h>
#include <linux/of_irq.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: " #define PFX "ipmi_si: "
/* Measure times between events in the driver. */ /* Measure times between events in the driver. */
@ -298,6 +303,9 @@ static int pci_registered;
#ifdef CONFIG_ACPI #ifdef CONFIG_ACPI
static int pnp_registered; static int pnp_registered;
#endif #endif
#ifdef CONFIG_PARISC
static int parisc_registered;
#endif
static unsigned int kipmid_max_busy_us[SI_MAX_PARMS]; static unsigned int kipmid_max_busy_us[SI_MAX_PARMS];
static int num_max_busy_us; static int num_max_busy_us;
@ -2699,6 +2707,62 @@ static struct platform_driver ipmi_driver = {
.remove = ipmi_remove, .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) static int wait_for_msg_done(struct smi_info *smi_info)
{ {
enum si_sm_result smi_result; enum si_sm_result smi_result;
@ -3464,6 +3528,13 @@ static int init_ipmi_si(void)
spmi_find_bmc(); spmi_find_bmc();
#endif #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 /* We prefer devices with interrupts, but in the case of a machine
with multiple BMCs we assume that there will be several instances 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 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) if (pnp_registered)
pnp_unregister_driver(&ipmi_pnp_driver); pnp_unregister_driver(&ipmi_pnp_driver);
#endif #endif
#ifdef CONFIG_PARISC
if (parisc_registered)
unregister_parisc_driver(&ipmi_parisc_driver);
#endif
platform_driver_unregister(&ipmi_driver); platform_driver_unregister(&ipmi_driver);