[PATCH] IPMI: add pigeonpoint poweroff

X86 boards generally use ACPI for the power management interactions with the
BMC.  However, non-x86 boards need some help.  This patch adds the help for
the Motorola PigeonPoint-based IPMCs.

Signed-off-by: Joseph Barnett <jbarnett@motorola.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 51 insertions, 1 deletions

diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c
index 85f8071be1b5..8ce447ab6de5 100644
--- a/drivers/char/ipmi/ipmi_poweroff.c
+++ b/drivers/char/ipmi/ipmi_poweroff.c
@@ -176,6 +176,42 @@ static int ipmi_request_in_rc_mode(ipmi_user_t            user,
 #define IPMI_ATCA_GET_ADDR_INFO_CMD     0x01
 #define IPMI_PICMG_ID                   0
 
+#define IPMI_NETFN_OEM                          0x2e
+#define IPMI_ATCA_PPS_GRACEFUL_RESTART          0x11
+#define IPMI_ATCA_PPS_IANA                      "\x00\x40\x0A"
+#define IPMI_MOTOROLA_MANUFACTURER_ID           0x0000A1
+#define IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID       0x0051
+
+static void (*atca_oem_poweroff_hook)(ipmi_user_t user) = NULL;
+
+static void pps_poweroff_atca (ipmi_user_t user)
+{
+        struct ipmi_system_interface_addr smi_addr;
+        struct kernel_ipmi_msg            send_msg;
+        int                               rv;
+        /*
+         * Configure IPMI address for local access
+         */
+        smi_addr.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE;
+        smi_addr.channel = IPMI_BMC_CHANNEL;
+        smi_addr.lun = 0;
+
+        printk(KERN_INFO PFX "PPS powerdown hook used");
+
+        send_msg.netfn = IPMI_NETFN_OEM;
+        send_msg.cmd = IPMI_ATCA_PPS_GRACEFUL_RESTART;
+        send_msg.data = IPMI_ATCA_PPS_IANA;
+        send_msg.data_len = 3;
+        rv = ipmi_request_in_rc_mode(user,
+                                  (struct ipmi_addr *) &smi_addr,
+                                   &send_msg);
+        if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) {
+                printk(KERN_ERR PFX "Unable to send ATCA ,"
+                       " IPMI error 0x%x\n", rv);
+        }
+        return;
+}
+
 static int ipmi_atca_detect (ipmi_user_t user)
 {
         struct ipmi_system_interface_addr smi_addr;
@@ -201,6 +237,13 @@ static int ipmi_atca_detect (ipmi_user_t user)
         rv = ipmi_request_wait_for_response(user,
                                             (struct ipmi_addr *) &smi_addr,
                                             &send_msg);
+
+        printk(KERN_INFO PFX "ATCA Detect mfg 0x%X prod 0x%X\n", mfg_id, prod_id);
+        if((mfg_id == IPMI_MOTOROLA_MANUFACTURER_ID)
+            && (prod_id == IPMI_MOTOROLA_PPS_IPMC_PRODUCT_ID)) {
+                printk(KERN_INFO PFX "Installing Pigeon Point Systems Poweroff Hook\n");
+                atca_oem_poweroff_hook = pps_poweroff_atca;
+        }
         return !rv;
 }
 
@@ -234,12 +277,19 @@ static void ipmi_poweroff_atca (ipmi_user_t user)
         rv = ipmi_request_in_rc_mode(user,
                                      (struct ipmi_addr *) &smi_addr,
                                      &send_msg);
-        if (rv) {
+        /** At this point, the system may be shutting down, and most
+         ** serial drivers (if used) will have interrupts turned off
+         ** it may be better to ignore IPMI_UNKNOWN_ERR_COMPLETION_CODE
+         ** return code
+         **/
+        if (rv && rv != IPMI_UNKNOWN_ERR_COMPLETION_CODE) {
                 printk(KERN_ERR PFX "Unable to send ATCA powerdown message,"
                        " IPMI error 0x%x\n", rv);
                 goto out;
         }
 
+        if(atca_oem_poweroff_hook)
+                return atca_oem_poweroff_hook(user);
  out:
         return;
 }