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Commit 168524d6 authored by Corey Minyard's avatar Corey Minyard Committed by Linus Torvalds
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[PATCH] ipmi: add hacks for IPMI chassis poweroff for certain Dell servers 



This patch allows Dell servers with IPMI controllers that predate IPMI 1.5
to use the standard poweroff or powercycle commands.  These systems
firmware don't set the chassis capability bit in the Get Device ID, but
they do implement the standard poweroff and powercycle commands.

Tested on RHEL3 kernel 2.4.21-20.ELsmp on a PowerEdge 2600.  The standard
ipmi_poweroff driver cannot drive these systems.  With this patch, they
power off or powercycle as expected.

Signed-off-by: default avatarMatt Domsch <Matt_Domsch@dell.com>
Signed-off-by: default avatarCorey Minyard <minyard@acm.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 56a55ec6

drivers/char/ipmi/ipmi_poweroff.c

+24 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ MODULE_PARM_DESC(poweroff_control, " Set to 2 to enable power cycle instead of p 
static unsigned int mfg_id;

static unsigned int prod_id;

static unsigned char capabilities;

static unsigned char ipmi_version;



/* We use our own messages for this operation, we don't let the system

   allocate them, since we may be in a panic situation.  The whole
@@ -336,6 +337,25 @@ static void ipmi_poweroff_cpi1 (ipmi_user_t user) 
	return;

}



/*

 * ipmi_dell_chassis_detect()

 * Dell systems with IPMI < 1.5 don't set the chassis capability bit

 * but they can handle a chassis poweroff or powercycle command.

 */



#define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00}

static int ipmi_dell_chassis_detect (ipmi_user_t user)

{

	const char ipmi_version_major = ipmi_version & 0xF;

	const char ipmi_version_minor = (ipmi_version >> 4) & 0xF;

	const char mfr[3]=DELL_IANA_MFR_ID;

	if (!memcmp(mfr, &mfg_id, sizeof(mfr)) &&

	    ipmi_version_major <= 1 &&

	    ipmi_version_minor < 5)

		return 1;

	return 0;

}



/*

 * Standard chassis support

 */
@@ -413,6 +433,9 @@ static struct poweroff_function poweroff_functions[] = { 
	{ .platform_type	= "CPI1",

	  .detect		= ipmi_cpi1_detect,

	  .poweroff_func	= ipmi_poweroff_cpi1 },

	{ .platform_type	= "chassis",

	  .detect		= ipmi_dell_chassis_detect,

	  .poweroff_func	= ipmi_poweroff_chassis },

	/* Chassis should generally be last, other things should override

	   it. */

	{ .platform_type	= "chassis",
@@ -498,6 +521,7 @@ static void ipmi_po_new_smi(int if_num) 
	prod_id = (halt_recv_msg.msg.data[10]

		   | (halt_recv_msg.msg.data[11] << 8));

	capabilities = halt_recv_msg.msg.data[6];

	ipmi_version = halt_recv_msg.msg.data[5];





	/* Scan for a poweroff method */