aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/char/sclp_chp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/char/sclp_chp.c')
-rw-r--r--drivers/s390/char/sclp_chp.c200
1 files changed, 0 insertions, 200 deletions
diff --git a/drivers/s390/char/sclp_chp.c b/drivers/s390/char/sclp_chp.c
deleted file mode 100644
index c68f5e7e63a..00000000000
--- a/drivers/s390/char/sclp_chp.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * drivers/s390/char/sclp_chp.c
- *
- * Copyright IBM Corp. 2007
- * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
- */
-
-#include <linux/types.h>
-#include <linux/gfp.h>
-#include <linux/errno.h>
-#include <linux/completion.h>
-#include <asm/sclp.h>
-#include <asm/chpid.h>
-
-#include "sclp.h"
-
-#define TAG "sclp_chp: "
-
-#define SCLP_CMDW_CONFIGURE_CHANNEL_PATH 0x000f0001
-#define SCLP_CMDW_DECONFIGURE_CHANNEL_PATH 0x000e0001
-#define SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION 0x00030001
-
-static inline sclp_cmdw_t get_configure_cmdw(struct chp_id chpid)
-{
- return SCLP_CMDW_CONFIGURE_CHANNEL_PATH | chpid.id << 8;
-}
-
-static inline sclp_cmdw_t get_deconfigure_cmdw(struct chp_id chpid)
-{
- return SCLP_CMDW_DECONFIGURE_CHANNEL_PATH | chpid.id << 8;
-}
-
-static void chp_callback(struct sclp_req *req, void *data)
-{
- struct completion *completion = data;
-
- complete(completion);
-}
-
-struct chp_cfg_sccb {
- struct sccb_header header;
- u8 ccm;
- u8 reserved[6];
- u8 cssid;
-} __attribute__((packed));
-
-struct chp_cfg_data {
- struct chp_cfg_sccb sccb;
- struct sclp_req req;
- struct completion completion;
-} __attribute__((packed));
-
-static int do_configure(sclp_cmdw_t cmd)
-{
- struct chp_cfg_data *data;
- int rc;
-
- if (!SCLP_HAS_CHP_RECONFIG)
- return -EOPNOTSUPP;
- /* Prepare sccb. */
- data = (struct chp_cfg_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!data)
- return -ENOMEM;
- data->sccb.header.length = sizeof(struct chp_cfg_sccb);
- data->req.command = cmd;
- data->req.sccb = &(data->sccb);
- data->req.status = SCLP_REQ_FILLED;
- data->req.callback = chp_callback;
- data->req.callback_data = &(data->completion);
- init_completion(&data->completion);
-
- /* Perform sclp request. */
- rc = sclp_add_request(&(data->req));
- if (rc)
- goto out;
- wait_for_completion(&data->completion);
-
- /* Check response .*/
- if (data->req.status != SCLP_REQ_DONE) {
- printk(KERN_WARNING TAG "configure channel-path request failed "
- "(status=0x%02x)\n", data->req.status);
- rc = -EIO;
- goto out;
- }
- switch (data->sccb.header.response_code) {
- case 0x0020:
- case 0x0120:
- case 0x0440:
- case 0x0450:
- break;
- default:
- printk(KERN_WARNING TAG "configure channel-path failed "
- "(cmd=0x%08x, response=0x%04x)\n", cmd,
- data->sccb.header.response_code);
- rc = -EIO;
- break;
- }
-out:
- free_page((unsigned long) data);
-
- return rc;
-}
-
-/**
- * sclp_chp_configure - perform configure channel-path sclp command
- * @chpid: channel-path ID
- *
- * Perform configure channel-path command sclp command for specified chpid.
- * Return 0 after command successfully finished, non-zero otherwise.
- */
-int sclp_chp_configure(struct chp_id chpid)
-{
- return do_configure(get_configure_cmdw(chpid));
-}
-
-/**
- * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
- * @chpid: channel-path ID
- *
- * Perform deconfigure channel-path command sclp command for specified chpid
- * and wait for completion. On success return 0. Return non-zero otherwise.
- */
-int sclp_chp_deconfigure(struct chp_id chpid)
-{
- return do_configure(get_deconfigure_cmdw(chpid));
-}
-
-struct chp_info_sccb {
- struct sccb_header header;
- u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
- u8 standby[SCLP_CHP_INFO_MASK_SIZE];
- u8 configured[SCLP_CHP_INFO_MASK_SIZE];
- u8 ccm;
- u8 reserved[6];
- u8 cssid;
-} __attribute__((packed));
-
-struct chp_info_data {
- struct chp_info_sccb sccb;
- struct sclp_req req;
- struct completion completion;
-} __attribute__((packed));
-
-/**
- * sclp_chp_read_info - perform read channel-path information sclp command
- * @info: resulting channel-path information data
- *
- * Perform read channel-path information sclp command and wait for completion.
- * On success, store channel-path information in @info and return 0. Return
- * non-zero otherwise.
- */
-int sclp_chp_read_info(struct sclp_chp_info *info)
-{
- struct chp_info_data *data;
- int rc;
-
- if (!SCLP_HAS_CHP_INFO)
- return -EOPNOTSUPP;
- /* Prepare sccb. */
- data = (struct chp_info_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
- if (!data)
- return -ENOMEM;
- data->sccb.header.length = sizeof(struct chp_info_sccb);
- data->req.command = SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION;
- data->req.sccb = &(data->sccb);
- data->req.status = SCLP_REQ_FILLED;
- data->req.callback = chp_callback;
- data->req.callback_data = &(data->completion);
- init_completion(&data->completion);
-
- /* Perform sclp request. */
- rc = sclp_add_request(&(data->req));
- if (rc)
- goto out;
- wait_for_completion(&data->completion);
-
- /* Check response .*/
- if (data->req.status != SCLP_REQ_DONE) {
- printk(KERN_WARNING TAG "read channel-path info request failed "
- "(status=0x%02x)\n", data->req.status);
- rc = -EIO;
- goto out;
- }
- if (data->sccb.header.response_code != 0x0010) {
- printk(KERN_WARNING TAG "read channel-path info failed "
- "(response=0x%04x)\n", data->sccb.header.response_code);
- rc = -EIO;
- goto out;
- }
- memcpy(info->recognized, data->sccb.recognized,
- SCLP_CHP_INFO_MASK_SIZE);
- memcpy(info->standby, data->sccb.standby,
- SCLP_CHP_INFO_MASK_SIZE);
- memcpy(info->configured, data->sccb.configured,
- SCLP_CHP_INFO_MASK_SIZE);
-out:
- free_page((unsigned long) data);
-
- return rc;
-}