xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/sclp: Add SCLP character device driver

Browse Source 
Add a character misc device "sclp_ctl" that allows to run SCCBs
from user space using the SCLP_CTL_SCCB ioctl.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Michael Holzheu
2013-06-06 09:52:08 +02:00
committed by Martin Schwidefsky
parent e9a8f32a98
commit d475f942b1
8 changed files with 192 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/s390/char/sclp_cmd.c
View File

@@ -195,7 +195,7 @@ static void sclp_sync_callback(struct sclp_req *req, void *data)
complete(completion);
}
static int do_sync_request(sclp_cmdw_t cmd, void *sccb)
int sclp_sync_request(sclp_cmdw_t cmd, void *sccb)
{
struct completion completion;
struct sclp_req *request;
@@ -270,7 +270,7 @@ int sclp_get_cpu_info(struct sclp_cpu_info *info)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
rc = do_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb);
rc = sclp_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb);
if (rc)
goto out;
if (sccb->header.response_code != 0x0010) {
@@ -304,7 +304,7 @@ static int do_cpu_configure(sclp_cmdw_t cmd)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
rc = do_sync_request(cmd, sccb);
rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -374,7 +374,7 @@ static int do_assign_storage(sclp_cmdw_t cmd, u16 rn)
return -ENOMEM;
sccb->header.length = PAGE_SIZE;
sccb->rn = rn;
rc = do_sync_request(cmd, sccb);
rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -429,7 +429,7 @@ static int sclp_attach_storage(u8 id)
if (!sccb)
return -ENOMEM;
sccb->header.length = PAGE_SIZE;
rc = do_sync_request(0x00080001 | id << 8, sccb);
rc = sclp_sync_request(0x00080001 | id << 8, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -627,7 +627,7 @@ static int __init sclp_detect_standby_memory(void)
for (id = 0; id <= sclp_max_storage_id; id++) {
memset(sccb, 0, PAGE_SIZE);
sccb->header.length = PAGE_SIZE;
rc = do_sync_request(0x00040001 | id << 8, sccb);
rc = sclp_sync_request(0x00040001 | id << 8, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -714,7 +714,7 @@ static int do_pci_configure(sclp_cmdw_t cmd, u32 fid)
sccb->header.length = PAGE_SIZE;
sccb->atype = SCLP_RECONFIG_PCI_ATPYE;
sccb->aid = fid;
rc = do_sync_request(cmd, sccb);
rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -771,7 +771,7 @@ static int do_chp_configure(sclp_cmdw_t cmd)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
rc = do_sync_request(cmd, sccb);
rc = sclp_sync_request(cmd, sccb);
if (rc)
goto out;
switch (sccb->header.response_code) {
@@ -846,7 +846,7 @@ int sclp_chp_read_info(struct sclp_chp_info *info)
if (!sccb)
return -ENOMEM;
sccb->header.length = sizeof(*sccb);
rc = do_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
rc = sclp_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb);
if (rc)
goto out;
if (sccb->header.response_code != 0x0010) {