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s390/ipl: make ipl_info less confusing
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The ipl_info union in struct ipl_parameter_block has the same name as
the struct ipl_info. This does not help while reading the code and the
union in struct ipl_parameter_block does not need to be named. Drop
the name from the union.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Martin Schwidefsky committed Apr 26, 2019
1 parent a8fd616 commit 86c74d8
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Showing 4 changed files with 66 additions and 68 deletions.
14 changes: 7 additions & 7 deletions arch/s390/boot/ipl_parm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -71,26 +71,26 @@ static size_t ipl_block_get_ascii_scpdata(char *dest, size_t size,
size_t i;
int has_lowercase;

count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data,
ipb->ipl_info.fcp.scp_data_len));
count = min(size - 1, scpdata_length(ipb->fcp.scp_data,
ipb->fcp.scp_data_len));
if (!count)
goto out;

has_lowercase = 0;
for (i = 0; i < count; i++) {
if (!isascii(ipb->ipl_info.fcp.scp_data[i])) {
if (!isascii(ipb->fcp.scp_data[i])) {
count = 0;
goto out;
}
if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i]))
if (!has_lowercase && islower(ipb->fcp.scp_data[i]))
has_lowercase = 1;
}

if (has_lowercase)
memcpy(dest, ipb->ipl_info.fcp.scp_data, count);
memcpy(dest, ipb->fcp.scp_data, count);
else
for (i = 0; i < count; i++)
dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]);
dest[i] = tolower(ipb->fcp.scp_data[i]);
out:
dest[count] = '\0';
return count;
Expand Down Expand Up @@ -239,7 +239,7 @@ void setup_memory_end(void)
#ifdef CONFIG_CRASH_DUMP
if (!OLDMEM_BASE && ipl_block_valid &&
ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP &&
ipl_block.ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP) {
ipl_block.fcp.opt == DIAG308_IPL_OPT_DUMP) {
if (!sclp_early_get_hsa_size(&memory_end) && memory_end)
memory_end_set = 1;
}
Expand Down
2 changes: 1 addition & 1 deletion arch/s390/include/asm/ipl.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,7 @@ struct ipl_parameter_block {
struct ipl_block_fcp fcp;
struct ipl_block_ccw ccw;
char raw[PAGE_SIZE - sizeof(struct ipl_list_hdr)];
} ipl_info;
};
} __packed __aligned(PAGE_SIZE);

struct save_area;
Expand Down
110 changes: 54 additions & 56 deletions arch/s390/kernel/ipl.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -248,7 +248,7 @@ static __init enum ipl_type get_ipl_type(void)
case DIAG308_IPL_TYPE_CCW:
return IPL_TYPE_CCW;
case DIAG308_IPL_TYPE_FCP:
if (ipl_block.ipl_info.fcp.opt == DIAG308_IPL_OPT_DUMP)
if (ipl_block.fcp.opt == DIAG308_IPL_OPT_DUMP)
return IPL_TYPE_FCP_DUMP;
else
return IPL_TYPE_FCP;
Expand Down Expand Up @@ -285,12 +285,11 @@ static ssize_t sys_ipl_device_show(struct kobject *kobj,
{
switch (ipl_info.type) {
case IPL_TYPE_CCW:
return sprintf(page, "0.%x.%04x\n", ipl_block.ipl_info.ccw.ssid,
ipl_block.ipl_info.ccw.devno);
return sprintf(page, "0.%x.%04x\n", ipl_block.ccw.ssid,
ipl_block.ccw.devno);
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
return sprintf(page, "0.0.%04x\n",
ipl_block.ipl_info.fcp.devno);
return sprintf(page, "0.0.%04x\n", ipl_block.fcp.devno);
default:
return 0;
}
Expand All @@ -314,8 +313,8 @@ static ssize_t ipl_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.ipl_info.fcp.scp_data_len;
void *scp_data = &ipl_block.ipl_info.fcp.scp_data;
unsigned int size = ipl_block.fcp.scp_data_len;
void *scp_data = &ipl_block.fcp.scp_data;

return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
Expand All @@ -331,13 +330,13 @@ static struct bin_attribute *ipl_fcp_bin_attrs[] = {
/* FCP ipl device attributes */

DEFINE_IPL_ATTR_RO(ipl_fcp, wwpn, "0x%016llx\n",
(unsigned long long)ipl_block.ipl_info.fcp.wwpn);
(unsigned long long)ipl_block.fcp.wwpn);
DEFINE_IPL_ATTR_RO(ipl_fcp, lun, "0x%016llx\n",
(unsigned long long)ipl_block.ipl_info.fcp.lun);
(unsigned long long)ipl_block.fcp.lun);
DEFINE_IPL_ATTR_RO(ipl_fcp, bootprog, "%lld\n",
(unsigned long long)ipl_block.ipl_info.fcp.bootprog);
(unsigned long long)ipl_block.fcp.bootprog);
DEFINE_IPL_ATTR_RO(ipl_fcp, br_lba, "%lld\n",
(unsigned long long)ipl_block.ipl_info.fcp.br_lba);
(unsigned long long)ipl_block.fcp.br_lba);

static ssize_t ipl_ccw_loadparm_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
Expand Down Expand Up @@ -493,14 +492,14 @@ static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
return -EINVAL;

memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
ipb->ipl_info.ccw.vm_parm_len = ip_len;
memset(ipb->ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
ipb->ccw.vm_parm_len = ip_len;
if (ip_len > 0) {
ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len);
ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len);
ipb->ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
memcpy(ipb->ccw.vm_parm, buf, ip_len);
ASCEBC(ipb->ccw.vm_parm, ip_len);
} else {
ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID;
ipb->ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID;
}

return len;
Expand Down Expand Up @@ -547,8 +546,8 @@ static ssize_t reipl_fcp_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_fcp->ipl_info.fcp.scp_data_len;
void *scp_data = reipl_block_fcp->ipl_info.fcp.scp_data;
size_t size = reipl_block_fcp->fcp.scp_data_len;
void *scp_data = reipl_block_fcp->fcp.scp_data;

return memory_read_from_buffer(buf, count, &off, scp_data, size);
}
Expand All @@ -564,15 +563,15 @@ static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
if (off)
return -EINVAL;

memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf, count);
memcpy(reipl_block_fcp->fcp.scp_data, buf, count);
if (scpdata_len % 8) {
padding = 8 - (scpdata_len % 8);
memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len,
memset(reipl_block_fcp->fcp.scp_data + scpdata_len,
0, padding);
scpdata_len += padding;
}

reipl_block_fcp->ipl_info.fcp.scp_data_len = scpdata_len;
reipl_block_fcp->fcp.scp_data_len = scpdata_len;
reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN + scpdata_len;
reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN + scpdata_len;

Expand All @@ -588,15 +587,15 @@ static struct bin_attribute *reipl_fcp_bin_attrs[] = {
};

DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
reipl_block_fcp->ipl_info.fcp.wwpn);
reipl_block_fcp->fcp.wwpn);
DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
reipl_block_fcp->ipl_info.fcp.lun);
reipl_block_fcp->fcp.lun);
DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
reipl_block_fcp->ipl_info.fcp.bootprog);
reipl_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
reipl_block_fcp->ipl_info.fcp.br_lba);
reipl_block_fcp->fcp.br_lba);
DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_fcp->ipl_info.fcp.devno);
reipl_block_fcp->fcp.devno);

static void reipl_get_ascii_loadparm(char *loadparm,
struct ipl_parameter_block *ibp)
Expand Down Expand Up @@ -678,7 +677,7 @@ static struct attribute_group reipl_fcp_attr_group = {
};

/* CCW reipl device attributes */
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ipl_info.ccw);
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);

/* NSS wrapper */
static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
Expand Down Expand Up @@ -740,7 +739,7 @@ static struct attribute_group reipl_ccw_attr_group_lpar = {
static void reipl_get_ascii_nss_name(char *dst,
struct ipl_parameter_block *ipb)
{
memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE);
memcpy(dst, ipb->ccw.nss_name, NSS_NAME_SIZE);
EBCASC(dst, NSS_NAME_SIZE);
dst[NSS_NAME_SIZE] = 0;
}
Expand Down Expand Up @@ -768,15 +767,15 @@ static ssize_t reipl_nss_name_store(struct kobject *kobj,
if (nss_len > NSS_NAME_SIZE)
return -EINVAL;

memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE);
memset(reipl_block_nss->ccw.nss_name, 0x40, NSS_NAME_SIZE);
if (nss_len > 0) {
reipl_block_nss->ipl_info.ccw.vm_flags |=
reipl_block_nss->ccw.vm_flags |=
DIAG308_VM_FLAGS_NSS_VALID;
memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len);
ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
memcpy(reipl_block_nss->ccw.nss_name, buf, nss_len);
ASCEBC(reipl_block_nss->ccw.nss_name, nss_len);
EBC_TOUPPER(reipl_block_nss->ccw.nss_name, nss_len);
} else {
reipl_block_nss->ipl_info.ccw.vm_flags &=
reipl_block_nss->ccw.vm_flags &=
~DIAG308_VM_FLAGS_NSS_VALID;
}

Expand Down Expand Up @@ -916,13 +915,12 @@ static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)

/* VM PARM */
if (MACHINE_IS_VM && ipl_block_valid &&
(ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) {
(ipl_block.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) {

ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
ipb->ipl_info.ccw.vm_parm_len =
ipl_block.ipl_info.ccw.vm_parm_len;
memcpy(ipb->ipl_info.ccw.vm_parm,
ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE);
ipb->ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
ipb->ccw.vm_parm_len = ipl_block.ccw.vm_parm_len;
memcpy(ipb->ccw.vm_parm,
ipl_block.ccw.vm_parm, DIAG308_VMPARM_SIZE);
}
}

Expand Down Expand Up @@ -962,8 +960,8 @@ static int __init reipl_ccw_init(void)

reipl_block_ccw_init(reipl_block_ccw);
if (ipl_info.type == IPL_TYPE_CCW) {
reipl_block_ccw->ipl_info.ccw.ssid = ipl_block.ipl_info.ccw.ssid;
reipl_block_ccw->ipl_info.ccw.devno = ipl_block.ipl_info.ccw.devno;
reipl_block_ccw->ccw.ssid = ipl_block.ccw.ssid;
reipl_block_ccw->ccw.devno = ipl_block.ccw.devno;
reipl_block_ccw_fill_parms(reipl_block_ccw);
}

Expand Down Expand Up @@ -1008,7 +1006,7 @@ static int __init reipl_fcp_init(void)
reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN;
reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL;
reipl_block_fcp->fcp.opt = DIAG308_IPL_OPT_IPL;
}
reipl_capabilities |= IPL_TYPE_FCP;
return 0;
Expand Down Expand Up @@ -1074,15 +1072,15 @@ static struct shutdown_action __refdata reipl_action = {
/* FCP dump device attributes */

DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n",
dump_block_fcp->ipl_info.fcp.wwpn);
dump_block_fcp->fcp.wwpn);
DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n",
dump_block_fcp->ipl_info.fcp.lun);
dump_block_fcp->fcp.lun);
DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
dump_block_fcp->ipl_info.fcp.bootprog);
dump_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
dump_block_fcp->ipl_info.fcp.br_lba);
dump_block_fcp->fcp.br_lba);
DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
dump_block_fcp->ipl_info.fcp.devno);
dump_block_fcp->fcp.devno);

static struct attribute *dump_fcp_attrs[] = {
&sys_dump_fcp_device_attr.attr,
Expand All @@ -1099,7 +1097,7 @@ static struct attribute_group dump_fcp_attr_group = {
};

/* CCW dump device attributes */
DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ipl_info.ccw);
DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ccw);

static struct attribute *dump_ccw_attrs[] = {
&sys_dump_ccw_device_attr.attr,
Expand Down Expand Up @@ -1219,7 +1217,7 @@ static int __init dump_fcp_init(void)
dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN;
dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP;
dump_block_fcp->fcp.opt = DIAG308_IPL_OPT_DUMP;
dump_capabilities |= DUMP_TYPE_FCP;
return 0;
}
Expand Down Expand Up @@ -1663,15 +1661,15 @@ void __init setup_ipl(void)
ipl_info.type = get_ipl_type();
switch (ipl_info.type) {
case IPL_TYPE_CCW:
ipl_info.data.ccw.dev_id.ssid = ipl_block.ipl_info.ccw.ssid;
ipl_info.data.ccw.dev_id.devno = ipl_block.ipl_info.ccw.devno;
ipl_info.data.ccw.dev_id.ssid = ipl_block.ccw.ssid;
ipl_info.data.ccw.dev_id.devno = ipl_block.ccw.devno;
break;
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
ipl_info.data.fcp.dev_id.ssid = 0;
ipl_info.data.fcp.dev_id.devno = ipl_block.ipl_info.fcp.devno;
ipl_info.data.fcp.wwpn = ipl_block.ipl_info.fcp.wwpn;
ipl_info.data.fcp.lun = ipl_block.ipl_info.fcp.lun;
ipl_info.data.fcp.dev_id.devno = ipl_block.fcp.devno;
ipl_info.data.fcp.wwpn = ipl_block.fcp.wwpn;
ipl_info.data.fcp.lun = ipl_block.fcp.lun;
break;
case IPL_TYPE_NSS:
case IPL_TYPE_UNKNOWN:
Expand Down
8 changes: 4 additions & 4 deletions arch/s390/kernel/ipl_vmparm.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -11,11 +11,11 @@ size_t ipl_block_get_ascii_vmparm(char *dest, size_t size,
char has_lowercase = 0;

len = 0;
if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) &&
(ipb->ipl_info.ccw.vm_parm_len > 0)) {
if ((ipb->ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) &&
(ipb->ccw.vm_parm_len > 0)) {

len = min_t(size_t, size - 1, ipb->ipl_info.ccw.vm_parm_len);
memcpy(dest, ipb->ipl_info.ccw.vm_parm, len);
len = min_t(size_t, size - 1, ipb->ccw.vm_parm_len);
memcpy(dest, ipb->ccw.vm_parm, len);
/* If at least one character is lowercase, we assume mixed
* case; otherwise we convert everything to lowercase.
*/
Expand Down

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