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Commit f2afae46 authored by Corey Minyard's avatar Corey Minyard Committed by Linus Torvalds
Browse files

ipmi: add options to disable openfirmware and PCI scanning 



Add try...  parameters to disable pci and platform (openfirmware) device
scanning for IPMI.  Also add docs for all the try...  parameters.

Signed-off-by: default avatarCorey Minyard <cminyard@mvista.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d941aeae

Documentation/IPMI.txt

+12 −6
Original line number Diff line number Diff line
@@ -348,34 +348,40 @@ You can change this at module load time (for a module) with: 


  modprobe ipmi_si.o type=<type1>,<type2>....

       ports=<port1>,<port2>... addrs=<addr1>,<addr2>...

       irqs=<irq1>,<irq2>... trydefaults=[0|1]

       irqs=<irq1>,<irq2>...

       regspacings=<sp1>,<sp2>,... regsizes=<size1>,<size2>,...

       regshifts=<shift1>,<shift2>,...

       slave_addrs=<addr1>,<addr2>,...

       force_kipmid=<enable1>,<enable2>,...

       kipmid_max_busy_us=<ustime1>,<ustime2>,...

       unload_when_empty=[0|1]

       trydefaults=[0|1] trydmi=[0|1] tryacpi=[0|1]

       tryplatform=[0|1] trypci=[0|1]



Each of these except si_trydefaults is a list, the first item for the

Each of these except try... items is a list, the first item for the

first interface, second item for the second interface, etc.



The si_type may be either "kcs", "smic", or "bt".  If you leave it blank, it

defaults to "kcs".



If you specify si_addrs as non-zero for an interface, the driver will

If you specify addrs as non-zero for an interface, the driver will

use the memory address given as the address of the device.  This

overrides si_ports.



If you specify si_ports as non-zero for an interface, the driver will

If you specify ports as non-zero for an interface, the driver will

use the I/O port given as the device address.



If you specify si_irqs as non-zero for an interface, the driver will

If you specify irqs as non-zero for an interface, the driver will

attempt to use the given interrupt for the device.



si_trydefaults sets whether the standard IPMI interface at 0xca2 and

trydefaults sets whether the standard IPMI interface at 0xca2 and

any interfaces specified by ACPE are tried.  By default, the driver

tries it, set this value to zero to turn this off.



The other try... items disable discovery by their corresponding

names.  These are all enabled by default, set them to zero to disable

them.  The tryplatform disables openfirmware.



The next three parameters have to do with register layout.  The

registers used by the interfaces may not appear at successive

locations and they may not be in 8-bit registers.  These parameters

drivers/char/ipmi/ipmi_si_intf.c

+28 −10
Original line number Diff line number Diff line
@@ -1214,6 +1214,10 @@ static bool si_tryacpi = 1; 
#ifdef CONFIG_DMI

static bool          si_trydmi = 1;

#endif

static bool          si_tryplatform = 1;

#ifdef CONFIG_PCI

static bool          si_trypci = 1;

#endif

static bool          si_trydefaults = 1;

static char          *si_type[SI_MAX_PARMS];

#define MAX_SI_TYPE_STR 30
@@ -1254,6 +1258,15 @@ module_param_named(trydmi, si_trydmi, bool, 0); 
MODULE_PARM_DESC(trydmi, "Setting this to zero will disable the"

		 " default scan of the interfaces identified via DMI");

#endif

module_param_named(tryplatform, si_tryplatform, bool, 0);

MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the"

		 " default scan of the interfaces identified via platform"

		 " interfaces like openfirmware");

#ifdef CONFIG_PCI

module_param_named(trypci, si_trypci, bool, 0);

MODULE_PARM_DESC(tryacpi, "Setting this to zero will disable the"

		 " default scan of the interfaces identified via pci");

#endif

module_param_named(trydefaults, si_trydefaults, bool, 0);

MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the"

		 " default scan of the KCS and SMIC interface at the standard"
@@ -3387,12 +3400,14 @@ static int init_ipmi_si(void) 
		return 0;

	initialized = 1;



	if (si_tryplatform) {

		rv = platform_driver_register(&ipmi_driver);

		if (rv) {

		printk(KERN_ERR PFX "Unable to register driver: %d\n", rv);

			printk(KERN_ERR PFX "Unable to register "

			       "driver: %d\n", rv);

			return rv;

		}



	}



	/* Parse out the si_type string into its components. */

	str = si_type_str;
@@ -3416,11 +3431,14 @@ static int init_ipmi_si(void) 
		return 0;



#ifdef CONFIG_PCI

	if (si_trypci) {

		rv = pci_register_driver(&ipmi_pci_driver);

		if (rv)

		printk(KERN_ERR PFX "Unable to register PCI driver: %d\n", rv);

			printk(KERN_ERR PFX "Unable to register "

			       "PCI driver: %d\n", rv);

		else

			pci_registered = 1;

	}

#endif



#ifdef CONFIG_ACPI