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authorSebastian Ott <sebott@linux.vnet.ibm.com>2015-11-27 11:15:36 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-04-15 18:16:38 +0200
commit68dd13d6d58c145bbf6d295b8c430b4d38c943d9 (patch)
tree6bff4290da9b97b11f1cd6bc50fa660d5a28482c /drivers/s390
parent52c48c51e60c473ccedb4c8f428050041ca7076a (diff)
downloadlinux-68dd13d6d58c145bbf6d295b8c430b4d38c943d9.tar.bz2
s390/sclp: move pci related commands to separate file
sclp commands only used by the PCI code shouldn't be build for !CONFIG_PCI. Instead of adding more ifdefs to sclp_cmd.c just move them to a new file. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/Makefile2
-rw-r--r--drivers/s390/char/sclp_cmd.c61
-rw-r--r--drivers/s390/char/sclp_pci.c76
3 files changed, 78 insertions, 61 deletions
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index dd2f7c832e5e..41e28b23b26a 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -18,6 +18,8 @@ obj-$(CONFIG_SCLP_CONSOLE) += sclp_con.o
obj-$(CONFIG_SCLP_VT220_TTY) += sclp_vt220.o
obj-$(CONFIG_SCLP_ASYNC) += sclp_async.o
+obj-$(CONFIG_PCI) += sclp_pci.o
+
obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o
obj-$(CONFIG_VMCP) += vmcp.o
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index d3947ea3e351..e3fc7539116b 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -576,67 +576,6 @@ __initcall(sclp_detect_standby_memory);
#endif /* CONFIG_MEMORY_HOTPLUG */
/*
- * PCI I/O adapter configuration related functions.
- */
-#define SCLP_CMDW_CONFIGURE_PCI 0x001a0001
-#define SCLP_CMDW_DECONFIGURE_PCI 0x001b0001
-
-#define SCLP_RECONFIG_PCI_ATPYE 2
-
-struct pci_cfg_sccb {
- struct sccb_header header;
- u8 atype; /* adapter type */
- u8 reserved1;
- u16 reserved2;
- u32 aid; /* adapter identifier */
-} __packed;
-
-static int do_pci_configure(sclp_cmdw_t cmd, u32 fid)
-{
- struct pci_cfg_sccb *sccb;
- int rc;
-
- if (!SCLP_HAS_PCI_RECONFIG)
- return -EOPNOTSUPP;
-
- sccb = (struct pci_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!sccb)
- return -ENOMEM;
-
- sccb->header.length = PAGE_SIZE;
- sccb->atype = SCLP_RECONFIG_PCI_ATPYE;
- sccb->aid = fid;
- rc = sclp_sync_request(cmd, sccb);
- if (rc)
- goto out;
- switch (sccb->header.response_code) {
- case 0x0020:
- case 0x0120:
- break;
- default:
- pr_warn("configure PCI I/O adapter failed: cmd=0x%08x response=0x%04x\n",
- cmd, sccb->header.response_code);
- rc = -EIO;
- break;
- }
-out:
- free_page((unsigned long) sccb);
- return rc;
-}
-
-int sclp_pci_configure(u32 fid)
-{
- return do_pci_configure(SCLP_CMDW_CONFIGURE_PCI, fid);
-}
-EXPORT_SYMBOL(sclp_pci_configure);
-
-int sclp_pci_deconfigure(u32 fid)
-{
- return do_pci_configure(SCLP_CMDW_DECONFIGURE_PCI, fid);
-}
-EXPORT_SYMBOL(sclp_pci_deconfigure);
-
-/*
* Channel path configuration related functions.
*/
diff --git a/drivers/s390/char/sclp_pci.c b/drivers/s390/char/sclp_pci.c
new file mode 100644
index 000000000000..943e92539e65
--- /dev/null
+++ b/drivers/s390/char/sclp_pci.c
@@ -0,0 +1,76 @@
+/*
+ * PCI I/O adapter configuration related functions.
+ *
+ * Copyright IBM Corp. 2016
+ */
+#define KMSG_COMPONENT "sclp_cmd"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/completion.h>
+#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+#include <asm/sclp.h>
+
+#include "sclp.h"
+
+#define SCLP_CMDW_CONFIGURE_PCI 0x001a0001
+#define SCLP_CMDW_DECONFIGURE_PCI 0x001b0001
+
+#define SCLP_RECONFIG_PCI_ATPYE 2
+
+struct pci_cfg_sccb {
+ struct sccb_header header;
+ u8 atype; /* adapter type */
+ u8 reserved1;
+ u16 reserved2;
+ u32 aid; /* adapter identifier */
+} __packed;
+
+static int do_pci_configure(sclp_cmdw_t cmd, u32 fid)
+{
+ struct pci_cfg_sccb *sccb;
+ int rc;
+
+ if (!SCLP_HAS_PCI_RECONFIG)
+ return -EOPNOTSUPP;
+
+ sccb = (struct pci_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!sccb)
+ return -ENOMEM;
+
+ sccb->header.length = PAGE_SIZE;
+ sccb->atype = SCLP_RECONFIG_PCI_ATPYE;
+ sccb->aid = fid;
+ rc = sclp_sync_request(cmd, sccb);
+ if (rc)
+ goto out;
+ switch (sccb->header.response_code) {
+ case 0x0020:
+ case 0x0120:
+ break;
+ default:
+ pr_warn("configure PCI I/O adapter failed: cmd=0x%08x response=0x%04x\n",
+ cmd, sccb->header.response_code);
+ rc = -EIO;
+ break;
+ }
+out:
+ free_page((unsigned long) sccb);
+ return rc;
+}
+
+int sclp_pci_configure(u32 fid)
+{
+ return do_pci_configure(SCLP_CMDW_CONFIGURE_PCI, fid);
+}
+EXPORT_SYMBOL(sclp_pci_configure);
+
+int sclp_pci_deconfigure(u32 fid)
+{
+ return do_pci_configure(SCLP_CMDW_DECONFIGURE_PCI, fid);
+}
+EXPORT_SYMBOL(sclp_pci_deconfigure);