[POWERPC] PS3: Add logical performance monitor device support

Add PS3 logical performance monitor device support to the
PS3 system-bus and platform device registration routines.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c
index 05c7c1c..9d251d0 100644 (file)
--- a/arch/powerpc/platforms/ps3/device-init.c
+++ b/arch/powerpc/platforms/ps3/device-init.c
@@ -31,6 +31,89 @@
 
 #include "platform.h"
 
+static int __init ps3_register_lpm_devices(void)
+{
+       int result;
+       u64 tmp1;
+       u64 tmp2;
+       struct ps3_system_bus_device *dev;
+
+       pr_debug(" -> %s:%d\n", __func__, __LINE__);
+
+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+       if (!dev)
+               return -ENOMEM;
+
+       dev->match_id = PS3_MATCH_ID_LPM;
+       dev->dev_type = PS3_DEVICE_TYPE_LPM;
+
+       /* The current lpm driver only supports a single BE processor. */
+
+       result = ps3_repository_read_be_node_id(0, &dev->lpm.node_id);
+
+       if (result) {
+               pr_debug("%s:%d: ps3_repository_read_be_node_id failed \n",
+                       __func__, __LINE__);
+               goto fail_read_repo;
+       }
+
+       result = ps3_repository_read_lpm_privileges(dev->lpm.node_id, &tmp1,
+               &dev->lpm.rights);
+
+       if (result) {
+               pr_debug("%s:%d: ps3_repository_read_lpm_privleges failed \n",
+                       __func__, __LINE__);
+               goto fail_read_repo;
+       }
+
+       lv1_get_logical_partition_id(&tmp2);
+
+       if (tmp1 != tmp2) {
+               pr_debug("%s:%d: wrong lpar\n",
+                       __func__, __LINE__);
+               result = -ENODEV;
+               goto fail_rights;
+       }
+
+       if (!(dev->lpm.rights & PS3_LPM_RIGHTS_USE_LPM)) {
+               pr_debug("%s:%d: don't have rights to use lpm\n",
+                       __func__, __LINE__);
+               result = -EPERM;
+               goto fail_rights;
+       }
+
+       pr_debug("%s:%d: pu_id %lu, rights %lu(%lxh)\n",
+               __func__, __LINE__, dev->lpm.pu_id, dev->lpm.rights,
+               dev->lpm.rights);
+
+       result = ps3_repository_read_pu_id(0, &dev->lpm.pu_id);
+
+       if (result) {
+               pr_debug("%s:%d: ps3_repository_read_pu_id failed \n",
+                       __func__, __LINE__);
+               goto fail_read_repo;
+       }
+
+       result = ps3_system_bus_device_register(dev);
+
+       if (result) {
+               pr_debug("%s:%d ps3_system_bus_device_register failed\n",
+                       __func__, __LINE__);
+               goto fail_register;
+       }
+
+       pr_debug(" <- %s:%d\n", __func__, __LINE__);
+       return 0;
+
+
+fail_register:
+fail_rights:
+fail_read_repo:
+       kfree(dev);
+       pr_debug(" <- %s:%d: failed\n", __func__, __LINE__);
+       return result;
+}
+
 /**
  * ps3_setup_gelic_device - Setup and register a gelic device instance.
  *
@@ -827,6 +910,8 @@ static int __init ps3_register_devices(void)
 
        ps3_register_sound_devices();
 
+       ps3_register_lpm_devices();
+
        pr_debug(" <- %s:%d\n", __func__, __LINE__);
        return 0;
 }

diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index 872d688..43c493f 100644 (file)
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -715,6 +715,7 @@ int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
        static unsigned int dev_ioc0_count;
        static unsigned int dev_sb_count;
        static unsigned int dev_vuart_count;
+       static unsigned int dev_lpm_count;
 
        if (!dev->core.parent)
                dev->core.parent = &ps3_system_bus;
@@ -737,6 +738,10 @@ int ps3_system_bus_device_register(struct ps3_system_bus_device *dev)
                snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
                        "vuart_%02x", ++dev_vuart_count);
                break;
+       case PS3_DEVICE_TYPE_LPM:
+               snprintf(dev->core.bus_id, sizeof(dev->core.bus_id),
+                       "lpm_%02x", ++dev_lpm_count);
+               break;
        default:
                BUG();
        };

diff --git a/include/asm-powerpc/ps3.h b/include/asm-powerpc/ps3.h
index 4ff07db..001121b 100644 (file)
--- a/include/asm-powerpc/ps3.h
+++ b/include/asm-powerpc/ps3.h
@@ -317,6 +317,7 @@ enum ps3_match_id {
        PS3_MATCH_ID_STOR_FLASH     = 8,
        PS3_MATCH_ID_SOUND          = 9,
        PS3_MATCH_ID_GRAPHICS       = 10,
+       PS3_MATCH_ID_LPM            = 11,
 };
 
 #define PS3_MODULE_ALIAS_EHCI           "ps3:1"
@@ -329,11 +330,13 @@ enum ps3_match_id {
 #define PS3_MODULE_ALIAS_STOR_FLASH     "ps3:8"
 #define PS3_MODULE_ALIAS_SOUND          "ps3:9"
 #define PS3_MODULE_ALIAS_GRAPHICS       "ps3:10"
+#define PS3_MODULE_ALIAS_LPM            "ps3:11"
 
 enum ps3_system_bus_device_type {
        PS3_DEVICE_TYPE_IOC0 = 1,
        PS3_DEVICE_TYPE_SB,
        PS3_DEVICE_TYPE_VUART,
+       PS3_DEVICE_TYPE_LPM,
 };
 
 /**
@@ -350,6 +353,11 @@ struct ps3_system_bus_device {
        struct ps3_dma_region *d_region;  /* SB, IOC0 */
        struct ps3_mmio_region *m_region; /* SB, IOC0*/
        unsigned int port_number;         /* VUART */
+       struct {                          /* LPM */
+               u64 node_id;
+               u64 pu_id;
+               u64 rights;
+       } lpm;
 
 /*     struct iommu_table *iommu_table; -- waiting for BenH's cleanups */
        struct device core;