diff options
| -rw-r--r-- | arch/powerpc/platforms/pseries/htmdump.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/htmdump.c b/arch/powerpc/platforms/pseries/htmdump.c index 3ba1114d3d19..39657e8655cb 100644 --- a/arch/powerpc/platforms/pseries/htmdump.c +++ b/arch/powerpc/platforms/pseries/htmdump.c @@ -20,6 +20,8 @@ static u32 coreindexonchip; static u32 htmtype; static u32 htmconfigure; static u32 htmstart; +static u32 htmsetup; + static struct dentry *htmdump_debugfs_dir; #define HTM_ENABLE 1 #define HTM_DISABLE 0 @@ -296,8 +298,43 @@ static const struct file_operations htminfo_fops = { .open = simple_open, }; +static int htmsetup_set(void *data, u64 val) +{ + long rc, ret; + + /* + * Input value: HTM buffer size in the power of 2 + * example: hex value 0x21 ( decimal: 33 ) is for + * 8GB + * Invoke H_HTM call with: + * - operation as htm start (H_HTM_OP_SETUP) + * - parameter 1 set to input value. + * - last two values are unused, hence set to zero + */ + rc = htm_hcall_wrapper(nodeindex, nodalchipindex, coreindexonchip, + htmtype, H_HTM_OP_SETUP, val, 0, 0); + + ret = htm_return_check(rc); + if (ret <= 0) { + pr_debug("H_HTM hcall failed for op: H_HTM_OP_SETUP, returning %ld\n", ret); + return ret; + } + + /* Set htmsetup if H_HTM_OP_SETUP operation succeeds */ + htmsetup = val; + + return 0; +} + +static int htmsetup_get(void *data, u64 *val) +{ + *val = htmsetup; + return 0; +} + DEFINE_SIMPLE_ATTRIBUTE(htmconfigure_fops, htmconfigure_get, htmconfigure_set, "%llu\n"); DEFINE_SIMPLE_ATTRIBUTE(htmstart_fops, htmstart_get, htmstart_set, "%llu\n"); +DEFINE_SIMPLE_ATTRIBUTE(htmsetup_fops, htmsetup_get, htmsetup_set, "%llu\n"); static int htmdump_init_debugfs(void) { @@ -325,6 +362,7 @@ static int htmdump_init_debugfs(void) */ debugfs_create_file("htmconfigure", 0600, htmdump_debugfs_dir, NULL, &htmconfigure_fops); debugfs_create_file("htmstart", 0600, htmdump_debugfs_dir, NULL, &htmstart_fops); + debugfs_create_file("htmsetup", 0600, htmdump_debugfs_dir, NULL, &htmsetup_fops); /* Debugfs interface file to present status of HTM */ htm_status_buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |