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Diffstat (limited to 'arch/s390/kernel/ipl.c')
-rw-r--r--arch/s390/kernel/ipl.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 4a71061974fd..ccea9a245867 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -39,6 +39,7 @@
#define IPL_CCW_STR "ccw"
#define IPL_FCP_STR "fcp"
#define IPL_FCP_DUMP_STR "fcp_dump"
+#define IPL_NVME_STR "nvme"
#define IPL_NSS_STR "nss"
#define DUMP_CCW_STR "ccw"
@@ -93,6 +94,8 @@ static char *ipl_type_str(enum ipl_type type)
return IPL_FCP_DUMP_STR;
case IPL_TYPE_NSS:
return IPL_NSS_STR;
+ case IPL_TYPE_NVME:
+ return IPL_NVME_STR;
case IPL_TYPE_UNKNOWN:
default:
return IPL_UNKNOWN_STR;
@@ -133,6 +136,7 @@ static int reipl_capabilities = IPL_TYPE_UNKNOWN;
static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
static struct ipl_parameter_block *reipl_block_fcp;
+static struct ipl_parameter_block *reipl_block_nvme;
static struct ipl_parameter_block *reipl_block_ccw;
static struct ipl_parameter_block *reipl_block_nss;
static struct ipl_parameter_block *reipl_block_actual;
@@ -261,6 +265,8 @@ static __init enum ipl_type get_ipl_type(void)
return IPL_TYPE_FCP_DUMP;
else
return IPL_TYPE_FCP;
+ case IPL_PBT_NVME:
+ return IPL_TYPE_NVME;
}
return IPL_TYPE_UNKNOWN;
}
@@ -317,6 +323,8 @@ static ssize_t sys_ipl_device_show(struct kobject *kobj,
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
+ case IPL_TYPE_NVME:
+ return sprintf(page, "%08ux\n", ipl_block.nvme.fid);
default:
return 0;
}
@@ -345,15 +353,35 @@ static ssize_t ipl_scp_data_read(struct file *filp, struct kobject *kobj,
return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
+
+static ssize_t ipl_nvme_scp_data_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ unsigned int size = ipl_block.nvme.scp_data_len;
+ void *scp_data = &ipl_block.nvme.scp_data;
+
+ return memory_read_from_buffer(buf, count, &off, scp_data, size);
+}
+
static struct bin_attribute ipl_scp_data_attr =
__BIN_ATTR(scp_data, S_IRUGO, ipl_scp_data_read, NULL, PAGE_SIZE);
+static struct bin_attribute ipl_nvme_scp_data_attr =
+ __BIN_ATTR(scp_data, S_IRUGO, ipl_nvme_scp_data_read, NULL, PAGE_SIZE);
+
static struct bin_attribute *ipl_fcp_bin_attrs[] = {
&ipl_parameter_attr,
&ipl_scp_data_attr,
NULL,
};
+static struct bin_attribute *ipl_nvme_bin_attrs[] = {
+ &ipl_parameter_attr,
+ &ipl_nvme_scp_data_attr,
+ NULL,
+};
+
/* FCP ipl device attributes */
DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
@@ -365,6 +393,16 @@ DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
(unsigned long long)ipl_block.fcp.br_lba);
+/* NVMe ipl device attributes */
+DEFINE_IPL_ATTR_RO(ipl_nvme, fid, "0x%08llx\n",
+ (unsigned long long)ipl_block.nvme.fid);
+DEFINE_IPL_ATTR_RO(ipl_nvme, nsid, "0x%08llx\n",
+ (unsigned long long)ipl_block.nvme.nsid);
+DEFINE_IPL_ATTR_RO(ipl_nvme, bootprog, "%lld\n",
+ (unsigned long long)ipl_block.nvme.bootprog);
+DEFINE_IPL_ATTR_RO(ipl_nvme, br_lba, "%lld\n",
+ (unsigned long long)ipl_block.nvme.br_lba);
+
static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
@@ -399,6 +437,24 @@ static struct attribute_group ipl_fcp_attr_group = {
.bin_attrs = ipl_fcp_bin_attrs,
};
+static struct attribute *ipl_nvme_attrs[] = {
+ &sys_ipl_type_attr.attr,
+ &sys_ipl_nvme_fid_attr.attr,
+ &sys_ipl_nvme_nsid_attr.attr,
+ &sys_ipl_nvme_bootprog_attr.attr,
+ &sys_ipl_nvme_br_lba_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
+ &sys_ipl_secure_attr.attr,
+ &sys_ipl_has_secure_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_nvme_attr_group = {
+ .attrs = ipl_nvme_attrs,
+ .bin_attrs = ipl_nvme_bin_attrs,
+};
+
+
/* CCW ipl device attributes */
static struct attribute *ipl_ccw_attrs_vm[] = {
@@ -474,6 +530,9 @@ static int __init ipl_init(void)
case IPL_TYPE_FCP_DUMP:
rc = sysfs_create_group(&ipl_kset->kobj, &ipl_fcp_attr_group);
break;
+ case IPL_TYPE_NVME:
+ rc = sysfs_create_group(&ipl_kset->kobj, &ipl_nvme_attr_group);
+ break;
default:
rc = sysfs_create_group(&ipl_kset->kobj,
&ipl_unknown_attr_group);
@@ -727,6 +786,93 @@ static struct attribute_group reipl_fcp_attr_group = {
static struct kobj_attribute sys_reipl_fcp_clear_attr =
__ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store);
+/* NVME reipl device attributes */
+
+static ssize_t reipl_nvme_scpdata_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buf, loff_t off, size_t count)
+{
+ size_t size = reipl_block_nvme->nvme.scp_data_len;
+ void *scp_data = reipl_block_nvme->nvme.scp_data;
+
+ return memory_read_from_buffer(buf, count, &off, scp_data, size);
+}
+
+static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ char *buf, loff_t off, size_t count)
+{
+ size_t scpdata_len = count;
+ size_t padding;
+
+ if (off)
+ return -EINVAL;
+
+ memcpy(reipl_block_nvme->nvme.scp_data, buf, count);
+ if (scpdata_len % 8) {
+ padding = 8 - (scpdata_len % 8);
+ memset(reipl_block_nvme->nvme.scp_data + scpdata_len,
+ 0, padding);
+ scpdata_len += padding;
+ }
+
+ reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
+ reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len;
+ reipl_block_nvme->nvme.scp_data_len = scpdata_len;
+
+ return count;
+}
+
+static struct bin_attribute sys_reipl_nvme_scp_data_attr =
+ __BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_nvme_scpdata_read,
+ reipl_nvme_scpdata_write, DIAG308_SCPDATA_SIZE);
+
+static struct bin_attribute *reipl_nvme_bin_attrs[] = {
+ &sys_reipl_nvme_scp_data_attr,
+ NULL,
+};
+
+DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n",
+ reipl_block_nvme->nvme.fid);
+DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n",
+ reipl_block_nvme->nvme.nsid);
+DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
+ reipl_block_nvme->nvme.bootprog);
+DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n",
+ reipl_block_nvme->nvme.br_lba);
+
+/* nvme wrapper */
+static ssize_t reipl_nvme_loadparm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return reipl_generic_loadparm_show(reipl_block_nvme, page);
+}
+
+static ssize_t reipl_nvme_loadparm_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ return reipl_generic_loadparm_store(reipl_block_nvme, buf, len);
+}
+
+static struct kobj_attribute sys_reipl_nvme_loadparm_attr =
+ __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nvme_loadparm_show,
+ reipl_nvme_loadparm_store);
+
+static struct attribute *reipl_nvme_attrs[] = {
+ &sys_reipl_nvme_fid_attr.attr,
+ &sys_reipl_nvme_nsid_attr.attr,
+ &sys_reipl_nvme_bootprog_attr.attr,
+ &sys_reipl_nvme_br_lba_attr.attr,
+ &sys_reipl_nvme_loadparm_attr.attr,
+ NULL,
+};
+
+static struct attribute_group reipl_nvme_attr_group = {
+ .attrs = reipl_nvme_attrs,
+ .bin_attrs = reipl_nvme_bin_attrs
+};
+
/* CCW reipl device attributes */
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
@@ -891,6 +1037,9 @@ static int reipl_set_type(enum ipl_type type)
case IPL_TYPE_FCP:
reipl_block_actual = reipl_block_fcp;
break;
+ case IPL_TYPE_NVME:
+ reipl_block_actual = reipl_block_nvme;
+ break;
case IPL_TYPE_NSS:
reipl_block_actual = reipl_block_nss;
break;
@@ -917,6 +1066,8 @@ static ssize_t reipl_type_store(struct kobject *kobj,
rc = reipl_set_type(IPL_TYPE_CCW);
else if (strncmp(buf, IPL_FCP_STR, strlen(IPL_FCP_STR)) == 0)
rc = reipl_set_type(IPL_TYPE_FCP);
+ else if (strncmp(buf, IPL_NVME_STR, strlen(IPL_NVME_STR)) == 0)
+ rc = reipl_set_type(IPL_TYPE_NVME);
else if (strncmp(buf, IPL_NSS_STR, strlen(IPL_NSS_STR)) == 0)
rc = reipl_set_type(IPL_TYPE_NSS);
return (rc != 0) ? rc : len;
@@ -927,6 +1078,7 @@ static struct kobj_attribute reipl_type_attr =
static struct kset *reipl_kset;
static struct kset *reipl_fcp_kset;
+static struct kset *reipl_nvme_kset;
static void __reipl_run(void *unused)
{
@@ -945,6 +1097,10 @@ static void __reipl_run(void *unused)
else
diag308(DIAG308_LOAD_NORMAL, NULL);
break;
+ case IPL_TYPE_NVME:
+ diag308(DIAG308_SET, reipl_block_nvme);
+ diag308(DIAG308_LOAD_CLEAR, NULL);
+ break;
case IPL_TYPE_NSS:
diag308(DIAG308_SET, reipl_block_nss);
diag308(DIAG308_LOAD_CLEAR, NULL);
@@ -1093,6 +1249,49 @@ out1:
return rc;
}
+static int __init reipl_nvme_init(void)
+{
+ int rc;
+
+ reipl_block_nvme = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reipl_block_nvme)
+ return -ENOMEM;
+
+ /* sysfs: create kset for mixing attr group and bin attrs */
+ reipl_nvme_kset = kset_create_and_add(IPL_NVME_STR, NULL,
+ &reipl_kset->kobj);
+ if (!reipl_nvme_kset) {
+ free_page((unsigned long) reipl_block_nvme);
+ return -ENOMEM;
+ }
+
+ rc = sysfs_create_group(&reipl_nvme_kset->kobj, &reipl_nvme_attr_group);
+ if (rc) {
+ kset_unregister(reipl_nvme_kset);
+ free_page((unsigned long) reipl_block_nvme);
+ return rc;
+ }
+
+ if (ipl_info.type == IPL_TYPE_NVME) {
+ memcpy(reipl_block_nvme, &ipl_block, sizeof(ipl_block));
+ /*
+ * Fix loadparm: There are systems where the (SCSI) LOADPARM
+ * is invalid in the IPL parameter block, so take it
+ * always from sclp_ipl_info.
+ */
+ memcpy(reipl_block_nvme->nvme.loadparm, sclp_ipl_info.loadparm,
+ LOADPARM_LEN);
+ } else {
+ reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN;
+ reipl_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
+ reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN;
+ reipl_block_nvme->nvme.pbt = IPL_PBT_NVME;
+ reipl_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_IPL;
+ }
+ reipl_capabilities |= IPL_TYPE_NVME;
+ return 0;
+}
+
static int __init reipl_type_init(void)
{
enum ipl_type reipl_type = ipl_info.type;
@@ -1108,6 +1307,9 @@ static int __init reipl_type_init(void)
if (reipl_block->pb0_hdr.pbt == IPL_PBT_FCP) {
memcpy(reipl_block_fcp, reipl_block, size);
reipl_type = IPL_TYPE_FCP;
+ } else if (reipl_block->pb0_hdr.pbt == IPL_PBT_NVME) {
+ memcpy(reipl_block_nvme, reipl_block, size);
+ reipl_type = IPL_TYPE_NVME;
} else if (reipl_block->pb0_hdr.pbt == IPL_PBT_CCW) {
memcpy(reipl_block_ccw, reipl_block, size);
reipl_type = IPL_TYPE_CCW;
@@ -1134,6 +1336,9 @@ static int __init reipl_init(void)
rc = reipl_fcp_init();
if (rc)
return rc;
+ rc = reipl_nvme_init();
+ if (rc)
+ return rc;
rc = reipl_nss_init();
if (rc)
return rc;
@@ -1750,6 +1955,10 @@ void __init setup_ipl(void)
ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn;
ipl_info.data.fcp.lun = ipl_block.fcp.lun;
break;
+ case IPL_TYPE_NVME:
+ ipl_info.data.nvme.fid = ipl_block.nvme.fid;
+ ipl_info.data.nvme.nsid = ipl_block.nvme.nsid;
+ break;
case IPL_TYPE_NSS:
case IPL_TYPE_UNKNOWN:
/* We have no info to copy */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.