-/*
+/*
* File...........: linux/drivers/s390/block/dasd_eckd.c
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Horst Hummel <Horst.Hummel@de.ibm.com>
+ * Horst Hummel <Horst.Hummel@de.ibm.com>
* Carsten Otte <Cotte@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
+ * EMC Symmetrix ioctl Copyright EMC Corporation, 2008
+ * Author.........: Nigel Hislop <hislop_nigel@emc.com>
*
*/
-#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/todclk.h>
#include <asm/uaccess.h>
+#include <asm/cio.h>
#include <asm/ccwdev.h>
#include "dasd_int.h"
static struct dasd_discipline dasd_eckd_discipline;
-struct dasd_eckd_private {
- struct dasd_eckd_characteristics rdc_data;
- struct dasd_eckd_confdata conf_data;
- struct dasd_eckd_path path_data;
- struct eckd_count count_area[5];
- int init_cqr_status;
- int uses_cdl;
- struct attrib_data_t attrib; /* e.g. cache operations */
-};
-
/* The ccw bus type uses this table to find devices that it sends to
* dasd_eckd_probe */
static struct ccw_device_id dasd_eckd_ids[] = {
- { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), driver_info: 0x1},
- { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), driver_info: 0x2},
- { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), driver_info: 0x3},
- { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), driver_info: 0x4},
- { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), driver_info: 0x5},
- { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), driver_info: 0x6},
- { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), driver_info: 0x7},
- { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), driver_info: 0x8},
- { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), driver_info: 0x9},
- { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), driver_info: 0xa},
+ { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1},
+ { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2},
+ { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3},
+ { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4},
+ { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5},
+ { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6},
+ { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7},
+ { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8},
+ { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9},
+ { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa},
{ /* end of list */ },
};
{
int ret;
- ret = dasd_generic_probe (cdev, &dasd_eckd_discipline);
- if (ret)
+ /* set ECKD specific ccw-device options */
+ ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE);
+ if (ret) {
+ printk(KERN_WARNING
+ "dasd_eckd_probe: could not set ccw-device options "
+ "for %s\n", dev_name(&cdev->dev));
return ret;
- ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP | CCWDEV_ALLOW_FORCE);
- return 0;
+ }
+ ret = dasd_generic_probe(cdev, &dasd_eckd_discipline);
+ return ret;
}
static int
dasd_eckd_set_online(struct ccw_device *cdev)
{
- return dasd_generic_set_online (cdev, &dasd_eckd_discipline);
+ return dasd_generic_set_online(cdev, &dasd_eckd_discipline);
}
static struct ccw_driver dasd_eckd_driver = {
return (d1 + (d2 - 1)) / d2;
}
-static inline int
-bytes_per_record(struct dasd_eckd_characteristics *rdc, int kl, int dl)
-{
- unsigned int fl1, fl2, int1, int2;
- int bpr;
-
- switch (rdc->formula) {
- case 0x01:
- fl1 = round_up_multiple(ECKD_F2(rdc) + dl, ECKD_F1(rdc));
- fl2 = round_up_multiple(kl ? ECKD_F2(rdc) + kl : 0,
- ECKD_F1(rdc));
- bpr = fl1 + fl2;
- break;
- case 0x02:
- int1 = ceil_quot(dl + ECKD_F6(rdc), ECKD_F5(rdc) << 1);
- int2 = ceil_quot(kl + ECKD_F6(rdc), ECKD_F5(rdc) << 1);
- fl1 = round_up_multiple(ECKD_F1(rdc) * ECKD_F2(rdc) + dl +
- ECKD_F6(rdc) + ECKD_F4(rdc) * int1,
- ECKD_F1(rdc));
- fl2 = round_up_multiple(ECKD_F1(rdc) * ECKD_F3(rdc) + kl +
- ECKD_F6(rdc) + ECKD_F4(rdc) * int2,
- ECKD_F1(rdc));
- bpr = fl1 + fl2;
- break;
- default:
- bpr = 0;
- break;
- }
- return bpr;
-}
-
-static inline unsigned int
-bytes_per_track(struct dasd_eckd_characteristics *rdc)
-{
- return *(unsigned int *) (rdc->byte_per_track) >> 8;
-}
-
-static inline unsigned int
+static unsigned int
recs_per_track(struct dasd_eckd_characteristics * rdc,
unsigned int kl, unsigned int dl)
{
return 0;
}
-static inline void
+static int
check_XRC (struct ccw1 *de_ccw,
struct DE_eckd_data *data,
struct dasd_device *device)
{
struct dasd_eckd_private *private;
+ int rc;
private = (struct dasd_eckd_private *) device->private;
+ if (!private->rdc_data.facilities.XRC_supported)
+ return 0;
/* switch on System Time Stamp - needed for XRC Support */
- if (private->rdc_data.facilities.XRC_supported) {
-
- data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */
- data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */
-
- data->ep_sys_time = get_clock ();
-
- de_ccw->count = sizeof (struct DE_eckd_data);
- de_ccw->flags |= CCW_FLAG_SLI;
- }
-
- return;
-
-} /* end check_XRC */
-
-static inline void
+ data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */
+ data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */
+
+ rc = get_sync_clock(&data->ep_sys_time);
+ /* Ignore return code if sync clock is switched off. */
+ if (rc == -ENOSYS || rc == -EACCES)
+ rc = 0;
+
+ de_ccw->count = sizeof(struct DE_eckd_data);
+ de_ccw->flags |= CCW_FLAG_SLI;
+ return rc;
+}
+
+static int
define_extent(struct ccw1 * ccw, struct DE_eckd_data * data, int trk,
int totrk, int cmd, struct dasd_device * device)
{
struct dasd_eckd_private *private;
struct ch_t geo, beg, end;
+ int rc = 0;
private = (struct dasd_eckd_private *) device->private;
ccw->count = 16;
ccw->cda = (__u32) __pa(data);
- memset(data, 0, sizeof (struct DE_eckd_data));
+ memset(data, 0, sizeof(struct DE_eckd_data));
switch (cmd) {
case DASD_ECKD_CCW_READ_HOME_ADDRESS:
case DASD_ECKD_CCW_READ_RECORD_ZERO:
case DASD_ECKD_CCW_WRITE_KD_MT:
data->mask.perm = 0x02;
data->attributes.operation = private->attrib.operation;
- check_XRC (ccw, data, device);
+ rc = check_XRC (ccw, data, device);
break;
case DASD_ECKD_CCW_WRITE_CKD:
case DASD_ECKD_CCW_WRITE_CKD_MT:
data->attributes.operation = DASD_BYPASS_CACHE;
- check_XRC (ccw, data, device);
+ rc = check_XRC (ccw, data, device);
break;
case DASD_ECKD_CCW_ERASE:
case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
data->mask.perm = 0x3;
data->mask.auth = 0x1;
data->attributes.operation = DASD_BYPASS_CACHE;
- check_XRC (ccw, data, device);
+ rc = check_XRC (ccw, data, device);
break;
default:
DEV_MESSAGE(KERN_ERR, device, "unknown opcode 0x%x", cmd);
/* check for sequential prestage - enhance cylinder range */
if (data->attributes.operation == DASD_SEQ_PRESTAGE ||
data->attributes.operation == DASD_SEQ_ACCESS) {
-
- if (end.cyl + private->attrib.nr_cyl < geo.cyl)
+
+ if (end.cyl + private->attrib.nr_cyl < geo.cyl)
end.cyl += private->attrib.nr_cyl;
else
end.cyl = (geo.cyl - 1);
data->beg_ext.head = beg.head;
data->end_ext.cyl = end.cyl;
data->end_ext.head = end.head;
+ return rc;
+}
+
+static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata,
+ struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ int rc;
+
+ private = (struct dasd_eckd_private *) device->private;
+ if (!private->rdc_data.facilities.XRC_supported)
+ return 0;
+
+ /* switch on System Time Stamp - needed for XRC Support */
+ pfxdata->define_extend.ga_extended |= 0x08; /* 'Time Stamp Valid' */
+ pfxdata->define_extend.ga_extended |= 0x02; /* 'Extended Parameter' */
+ pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */
+
+ rc = get_sync_clock(&pfxdata->define_extend.ep_sys_time);
+ /* Ignore return code if sync clock is switched off. */
+ if (rc == -ENOSYS || rc == -EACCES)
+ rc = 0;
+ return rc;
+}
+
+static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, int trk,
+ int totrk, int cmd, struct dasd_device *basedev,
+ struct dasd_device *startdev)
+{
+ struct dasd_eckd_private *basepriv, *startpriv;
+ struct DE_eckd_data *data;
+ struct ch_t geo, beg, end;
+ int rc = 0;
+
+ basepriv = (struct dasd_eckd_private *) basedev->private;
+ startpriv = (struct dasd_eckd_private *) startdev->private;
+ data = &pfxdata->define_extend;
+
+ ccw->cmd_code = DASD_ECKD_CCW_PFX;
+ ccw->flags = 0;
+ ccw->count = sizeof(*pfxdata);
+ ccw->cda = (__u32) __pa(pfxdata);
+
+ memset(pfxdata, 0, sizeof(*pfxdata));
+ /* prefix data */
+ pfxdata->format = 0;
+ pfxdata->base_address = basepriv->ned->unit_addr;
+ pfxdata->base_lss = basepriv->ned->ID;
+ pfxdata->validity.define_extend = 1;
+
+ /* private uid is kept up to date, conf_data may be outdated */
+ if (startpriv->uid.type != UA_BASE_DEVICE) {
+ pfxdata->validity.verify_base = 1;
+ if (startpriv->uid.type == UA_HYPER_PAV_ALIAS)
+ pfxdata->validity.hyper_pav = 1;
+ }
+
+ /* define extend data (mostly)*/
+ switch (cmd) {
+ case DASD_ECKD_CCW_READ_HOME_ADDRESS:
+ case DASD_ECKD_CCW_READ_RECORD_ZERO:
+ case DASD_ECKD_CCW_READ:
+ case DASD_ECKD_CCW_READ_MT:
+ case DASD_ECKD_CCW_READ_CKD:
+ case DASD_ECKD_CCW_READ_CKD_MT:
+ case DASD_ECKD_CCW_READ_KD:
+ case DASD_ECKD_CCW_READ_KD_MT:
+ case DASD_ECKD_CCW_READ_COUNT:
+ data->mask.perm = 0x1;
+ data->attributes.operation = basepriv->attrib.operation;
+ break;
+ case DASD_ECKD_CCW_WRITE:
+ case DASD_ECKD_CCW_WRITE_MT:
+ case DASD_ECKD_CCW_WRITE_KD:
+ case DASD_ECKD_CCW_WRITE_KD_MT:
+ data->mask.perm = 0x02;
+ data->attributes.operation = basepriv->attrib.operation;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ case DASD_ECKD_CCW_WRITE_CKD:
+ case DASD_ECKD_CCW_WRITE_CKD_MT:
+ data->attributes.operation = DASD_BYPASS_CACHE;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ case DASD_ECKD_CCW_ERASE:
+ case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
+ case DASD_ECKD_CCW_WRITE_RECORD_ZERO:
+ data->mask.perm = 0x3;
+ data->mask.auth = 0x1;
+ data->attributes.operation = DASD_BYPASS_CACHE;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ default:
+ DEV_MESSAGE(KERN_ERR, basedev, "unknown opcode 0x%x", cmd);
+ break;
+ }
+
+ data->attributes.mode = 0x3; /* ECKD */
+
+ if ((basepriv->rdc_data.cu_type == 0x2105 ||
+ basepriv->rdc_data.cu_type == 0x2107 ||
+ basepriv->rdc_data.cu_type == 0x1750)
+ && !(basepriv->uses_cdl && trk < 2))
+ data->ga_extended |= 0x40; /* Regular Data Format Mode */
+
+ geo.cyl = basepriv->rdc_data.no_cyl;
+ geo.head = basepriv->rdc_data.trk_per_cyl;
+ beg.cyl = trk / geo.head;
+ beg.head = trk % geo.head;
+ end.cyl = totrk / geo.head;
+ end.head = totrk % geo.head;
+
+ /* check for sequential prestage - enhance cylinder range */
+ if (data->attributes.operation == DASD_SEQ_PRESTAGE ||
+ data->attributes.operation == DASD_SEQ_ACCESS) {
+
+ if (end.cyl + basepriv->attrib.nr_cyl < geo.cyl)
+ end.cyl += basepriv->attrib.nr_cyl;
+ else
+ end.cyl = (geo.cyl - 1);
+ }
+
+ data->beg_ext.cyl = beg.cyl;
+ data->beg_ext.head = beg.head;
+ data->end_ext.cyl = end.cyl;
+ data->end_ext.head = end.head;
+ return rc;
}
-static inline void
+static void
locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, int trk,
int rec_on_trk, int no_rec, int cmd,
struct dasd_device * device, int reclen)
struct dasd_eckd_private *private;
int sector;
int dn, d;
-
+
private = (struct dasd_eckd_private *) device->private;
DBF_DEV_EVENT(DBF_INFO, device,
ccw->count = 16;
ccw->cda = (__u32) __pa(data);
- memset(data, 0, sizeof (struct LO_eckd_data));
+ memset(data, 0, sizeof(struct LO_eckd_data));
sector = 0;
if (rec_on_trk) {
switch (private->rdc_data.dev_type) {
return LABEL_SIZE;
}
-static int
-dasd_eckd_read_conf(struct dasd_device *device)
+/*
+ * Generate device unique id that specifies the physical device.
+ */
+static int dasd_eckd_generate_uid(struct dasd_device *device,
+ struct dasd_uid *uid)
+{
+ struct dasd_eckd_private *private;
+ int count;
+
+ private = (struct dasd_eckd_private *) device->private;
+ if (!private)
+ return -ENODEV;
+ if (!private->ned || !private->gneq)
+ return -ENODEV;
+
+ memset(uid, 0, sizeof(struct dasd_uid));
+ memcpy(uid->vendor, private->ned->HDA_manufacturer,
+ sizeof(uid->vendor) - 1);
+ EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
+ memcpy(uid->serial, private->ned->HDA_location,
+ sizeof(uid->serial) - 1);
+ EBCASC(uid->serial, sizeof(uid->serial) - 1);
+ uid->ssid = private->gneq->subsystemID;
+ uid->real_unit_addr = private->ned->unit_addr;;
+ if (private->sneq) {
+ uid->type = private->sneq->sua_flags;
+ if (uid->type == UA_BASE_PAV_ALIAS)
+ uid->base_unit_addr = private->sneq->base_unit_addr;
+ } else {
+ uid->type = UA_BASE_DEVICE;
+ }
+ if (private->vdsneq) {
+ for (count = 0; count < 16; count++) {
+ sprintf(uid->vduit+2*count, "%02x",
+ private->vdsneq->uit[count]);
+ }
+ }
+ return 0;
+}
+
+static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device,
+ void *rcd_buffer,
+ struct ciw *ciw, __u8 lpm)
+{
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+
+ cqr = dasd_smalloc_request("ECKD", 1 /* RCD */, ciw->count, device);
+
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "Could not allocate RCD request");
+ return cqr;
+ }
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = ciw->cmd;
+ ccw->cda = (__u32)(addr_t)rcd_buffer;
+ ccw->count = ciw->count;
+
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ cqr->expires = 10*HZ;
+ cqr->lpm = lpm;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+ cqr->retries = 2;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ return cqr;
+}
+
+static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
+ void **rcd_buffer,
+ int *rcd_buffer_size, __u8 lpm)
+{
+ struct ciw *ciw;
+ char *rcd_buf = NULL;
+ int ret;
+ struct dasd_ccw_req *cqr;
+
+ /*
+ * scan for RCD command in extended SenseID data
+ */
+ ciw = ccw_device_get_ciw(device->cdev, CIW_TYPE_RCD);
+ if (!ciw || ciw->cmd == 0) {
+ ret = -EOPNOTSUPP;
+ goto out_error;
+ }
+ rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
+ if (!rcd_buf) {
+ ret = -ENOMEM;
+ goto out_error;
+ }
+
+ /*
+ * buffer has to start with EBCDIC "V1.0" to show
+ * support for virtual device SNEQ
+ */
+ rcd_buf[0] = 0xE5;
+ rcd_buf[1] = 0xF1;
+ rcd_buf[2] = 0x4B;
+ rcd_buf[3] = 0xF0;
+ cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm);
+ if (IS_ERR(cqr)) {
+ ret = PTR_ERR(cqr);
+ goto out_error;
+ }
+ ret = dasd_sleep_on(cqr);
+ /*
+ * on success we update the user input parms
+ */
+ dasd_sfree_request(cqr, cqr->memdev);
+ if (ret)
+ goto out_error;
+
+ *rcd_buffer_size = ciw->count;
+ *rcd_buffer = rcd_buf;
+ return 0;
+out_error:
+ kfree(rcd_buf);
+ *rcd_buffer = NULL;
+ *rcd_buffer_size = 0;
+ return ret;
+}
+
+static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private)
+{
+
+ struct dasd_sneq *sneq;
+ int i, count;
+
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ count = private->conf_len / sizeof(struct dasd_sneq);
+ sneq = (struct dasd_sneq *)private->conf_data;
+ for (i = 0; i < count; ++i) {
+ if (sneq->flags.identifier == 1 && sneq->format == 1)
+ private->sneq = sneq;
+ else if (sneq->flags.identifier == 1 && sneq->format == 4)
+ private->vdsneq = (struct vd_sneq *)sneq;
+ else if (sneq->flags.identifier == 2)
+ private->gneq = (struct dasd_gneq *)sneq;
+ else if (sneq->flags.identifier == 3 && sneq->res1 == 1)
+ private->ned = (struct dasd_ned *)sneq;
+ sneq++;
+ }
+ if (!private->ned || !private->gneq) {
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ return -EINVAL;
+ }
+ return 0;
+
+};
+
+static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len)
+{
+ struct dasd_gneq *gneq;
+ int i, count, found;
+
+ count = conf_len / sizeof(*gneq);
+ gneq = (struct dasd_gneq *)conf_data;
+ found = 0;
+ for (i = 0; i < count; ++i) {
+ if (gneq->flags.identifier == 2) {
+ found = 1;
+ break;
+ }
+ gneq++;
+ }
+ if (found)
+ return ((char *)gneq)[18] & 0x07;
+ else
+ return 0;
+}
+
+static int dasd_eckd_read_conf(struct dasd_device *device)
{
void *conf_data;
int conf_len, conf_data_saved;
path_data->opm = ccw_device_get_path_mask(device->cdev);
lpm = 0x80;
conf_data_saved = 0;
-
/* get configuration data per operational path */
for (lpm = 0x80; lpm; lpm>>= 1) {
if (lpm & path_data->opm){
- rc = read_conf_data_lpm(device->cdev, &conf_data,
- &conf_len, lpm);
+ rc = dasd_eckd_read_conf_lpm(device, &conf_data,
+ &conf_len, lpm);
if (rc && rc != -EOPNOTSUPP) { /* -EOPNOTSUPP is ok */
MESSAGE(KERN_WARNING,
"Read configuration data returned "
if (conf_data == NULL) {
MESSAGE(KERN_WARNING, "%s", "No configuration "
"data retrieved");
- continue; /* no errror */
- }
- if (conf_len != sizeof (struct dasd_eckd_confdata)) {
- MESSAGE(KERN_WARNING,
- "sizes of configuration data mismatch"
- "%d (read) vs %ld (expected)",
- conf_len,
- sizeof (struct dasd_eckd_confdata));
- kfree(conf_data);
- continue; /* no errror */
+ continue; /* no error */
}
/* save first valid configuration data */
- if (!conf_data_saved){
- memcpy(&private->conf_data, conf_data,
- sizeof (struct dasd_eckd_confdata));
+ if (!conf_data_saved) {
+ kfree(private->conf_data);
+ private->conf_data = conf_data;
+ private->conf_len = conf_len;
+ if (dasd_eckd_identify_conf_parts(private)) {
+ private->conf_data = NULL;
+ private->conf_len = 0;
+ kfree(conf_data);
+ continue;
+ }
conf_data_saved++;
}
- switch (((char *)conf_data)[242] & 0x07){
+ switch (dasd_eckd_path_access(conf_data, conf_len)) {
case 0x02:
path_data->npm |= lpm;
break;
path_data->ppm |= lpm;
break;
}
- kfree(conf_data);
+ if (conf_data != private->conf_data)
+ kfree(conf_data);
}
}
return 0;
}
+static int dasd_eckd_read_features(struct dasd_device *device)
+{
+ struct dasd_psf_prssd_data *prssdp;
+ struct dasd_rssd_features *features;
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+ int rc;
+ struct dasd_eckd_private *private;
+
+ private = (struct dasd_eckd_private *) device->private;
+ cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
+ 1 /* PSF */ + 1 /* RSSD */ ,
+ (sizeof(struct dasd_psf_prssd_data) +
+ sizeof(struct dasd_rssd_features)),
+ device);
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "Could not allocate initialization request");
+ return PTR_ERR(cqr);
+ }
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
+ cqr->retries = 5;
+ cqr->expires = 10 * HZ;
+
+ /* Prepare for Read Subsystem Data */
+ prssdp = (struct dasd_psf_prssd_data *) cqr->data;
+ memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data));
+ prssdp->order = PSF_ORDER_PRSSD;
+ prssdp->suborder = 0x41; /* Read Feature Codes */
+ /* all other bytes of prssdp must be zero */
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->count = sizeof(struct dasd_psf_prssd_data);
+ ccw->flags |= CCW_FLAG_CC;
+ ccw->cda = (__u32)(addr_t) prssdp;
+
+ /* Read Subsystem Data - feature codes */
+ features = (struct dasd_rssd_features *) (prssdp + 1);
+ memset(features, 0, sizeof(struct dasd_rssd_features));
+
+ ccw++;
+ ccw->cmd_code = DASD_ECKD_CCW_RSSD;
+ ccw->count = sizeof(struct dasd_rssd_features);
+ ccw->cda = (__u32)(addr_t) features;
+
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ rc = dasd_sleep_on(cqr);
+ if (rc == 0) {
+ prssdp = (struct dasd_psf_prssd_data *) cqr->data;
+ features = (struct dasd_rssd_features *) (prssdp + 1);
+ memcpy(&private->features, features,
+ sizeof(struct dasd_rssd_features));
+ }
+ dasd_sfree_request(cqr, cqr->memdev);
+ return rc;
+}
+
+
+/*
+ * Build CP for Perform Subsystem Function - SSC.
+ */
+static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device)
+{
+ struct dasd_ccw_req *cqr;
+ struct dasd_psf_ssc_data *psf_ssc_data;
+ struct ccw1 *ccw;
+ cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ ,
+ sizeof(struct dasd_psf_ssc_data),
+ device);
+
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "Could not allocate PSF-SSC request");
+ return cqr;
+ }
+ psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
+ psf_ssc_data->order = PSF_ORDER_SSC;
+ psf_ssc_data->suborder = 0x88;
+ psf_ssc_data->reserved[0] = 0x88;
+
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->cda = (__u32)(addr_t)psf_ssc_data;
+ ccw->count = 66;
+
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->block = NULL;
+ cqr->expires = 10*HZ;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ return cqr;
+}
+
+/*
+ * Perform Subsystem Function.
+ * It is necessary to trigger CIO for channel revalidation since this
+ * call might change behaviour of DASD devices.
+ */
+static int
+dasd_eckd_psf_ssc(struct dasd_device *device)
+{
+ struct dasd_ccw_req *cqr;
+ int rc;
+
+ cqr = dasd_eckd_build_psf_ssc(device);
+ if (IS_ERR(cqr))
+ return PTR_ERR(cqr);
+
+ rc = dasd_sleep_on(cqr);
+ if (!rc)
+ /* trigger CIO to reprobe devices */
+ css_schedule_reprobe();
+ dasd_sfree_request(cqr, cqr->memdev);
+ return rc;
+}
+
+/*
+ * Valide storage server of current device.
+ */
+static int dasd_eckd_validate_server(struct dasd_device *device)
+{
+ int rc;
+ struct dasd_eckd_private *private;
+
+ /* Currently PAV is the only reason to 'validate' server on LPAR */
+ if (dasd_nopav || MACHINE_IS_VM)
+ return 0;
+
+ rc = dasd_eckd_psf_ssc(device);
+ /* may be requested feature is not available on server,
+ * therefore just report error and go ahead */
+ private = (struct dasd_eckd_private *) device->private;
+ DEV_MESSAGE(KERN_INFO, device,
+ "PSF-SSC on storage subsystem %s.%s.%04x returned rc=%d",
+ private->uid.vendor, private->uid.serial,
+ private->uid.ssid, rc);
+ /* RE-Read Configuration Data */
+ return dasd_eckd_read_conf(device);
+}
+
+/*
+ * Check device characteristics.
+ * If the device is accessible using ECKD discipline, the device is enabled.
+ */
static int
dasd_eckd_check_characteristics(struct dasd_device *device)
{
struct dasd_eckd_private *private;
+ struct dasd_block *block;
void *rdc_data;
- int rc;
+ int is_known, rc;
private = (struct dasd_eckd_private *) device->private;
if (private == NULL) {
- private = kmalloc(sizeof(struct dasd_eckd_private),
+ private = kzalloc(sizeof(struct dasd_eckd_private),
GFP_KERNEL | GFP_DMA);
if (private == NULL) {
DEV_MESSAGE(KERN_WARNING, device, "%s",
"data");
return -ENOMEM;
}
- memset(private, 0, sizeof(struct dasd_eckd_private));
device->private = (void *) private;
}
/* Invalidate status of initial analysis. */
private->attrib.operation = DASD_NORMAL_CACHE;
private->attrib.nr_cyl = 0;
+ /* Read Configuration Data */
+ rc = dasd_eckd_read_conf(device);
+ if (rc)
+ goto out_err1;
+
+ /* Generate device unique id and register in devmap */
+ rc = dasd_eckd_generate_uid(device, &private->uid);
+ if (rc)
+ goto out_err1;
+ dasd_set_uid(device->cdev, &private->uid);
+
+ if (private->uid.type == UA_BASE_DEVICE) {
+ block = dasd_alloc_block();
+ if (IS_ERR(block)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "could not allocate dasd block structure");
+ rc = PTR_ERR(block);
+ goto out_err1;
+ }
+ device->block = block;
+ block->base = device;
+ }
+
+ /* register lcu with alias handling, enable PAV if this is a new lcu */
+ is_known = dasd_alias_make_device_known_to_lcu(device);
+ if (is_known < 0) {
+ rc = is_known;
+ goto out_err2;
+ }
+ if (!is_known) {
+ /* new lcu found */
+ rc = dasd_eckd_validate_server(device); /* will switch pav on */
+ if (rc)
+ goto out_err3;
+ }
+
+ /* Read Feature Codes */
+ rc = dasd_eckd_read_features(device);
+ if (rc)
+ goto out_err3;
+
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
- rc = read_dev_chars(device->cdev, &rdc_data, 64);
+ memset(rdc_data, 0, sizeof(rdc_data));
+ rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64);
if (rc) {
DEV_MESSAGE(KERN_WARNING, device,
- "Read device characteristics returned error %d",
- rc);
- return rc;
+ "Read device characteristics returned "
+ "rc=%d", rc);
+ goto out_err3;
}
-
DEV_MESSAGE(KERN_INFO, device,
"%04X/%02X(CU:%04X/%02X) Cyl:%d Head:%d Sec:%d",
private->rdc_data.dev_type,
private->rdc_data.no_cyl,
private->rdc_data.trk_per_cyl,
private->rdc_data.sec_per_trk);
+ return 0;
- /* Read Configuration Data */
- rc = dasd_eckd_read_conf (device);
+out_err3:
+ dasd_alias_disconnect_device_from_lcu(device);
+out_err2:
+ dasd_free_block(device->block);
+ device->block = NULL;
+out_err1:
+ kfree(private->conf_data);
+ kfree(device->private);
+ device->private = NULL;
return rc;
+}
+
+static void dasd_eckd_uncheck_device(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ private = (struct dasd_eckd_private *) device->private;
+ dasd_alias_disconnect_device_from_lcu(device);
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ private->conf_len = 0;
+ kfree(private->conf_data);
+ private->conf_data = NULL;
}
static struct dasd_ccw_req *
/* Define extent for the first 3 tracks. */
define_extent(ccw++, cqr->data, 0, 2,
DASD_ECKD_CCW_READ_COUNT, device);
- LO_data = cqr->data + sizeof (struct DE_eckd_data);
+ LO_data = cqr->data + sizeof(struct DE_eckd_data);
/* Locate record for the first 4 records on track 0. */
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++, 0, 0, 4,
ccw->count = 8;
ccw->cda = (__u32)(addr_t) count_data;
- cqr->device = device;
+ cqr->block = NULL;
+ cqr->startdev = device;
+ cqr->memdev = device;
cqr->retries = 0;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
struct dasd_eckd_private *private;
struct dasd_device *device;
- device = init_cqr->device;
+ device = init_cqr->startdev;
private = (struct dasd_eckd_private *) device->private;
private->init_cqr_status = init_cqr->status;
dasd_sfree_request(init_cqr, device);
}
static int
-dasd_eckd_start_analysis(struct dasd_device *device)
+dasd_eckd_start_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
struct dasd_ccw_req *init_cqr;
- private = (struct dasd_eckd_private *) device->private;
- init_cqr = dasd_eckd_analysis_ccw(device);
+ private = (struct dasd_eckd_private *) block->base->private;
+ init_cqr = dasd_eckd_analysis_ccw(block->base);
if (IS_ERR(init_cqr))
return PTR_ERR(init_cqr);
init_cqr->callback = dasd_eckd_analysis_callback;
}
static int
-dasd_eckd_end_analysis(struct dasd_device *device)
+dasd_eckd_end_analysis(struct dasd_block *block)
{
+ struct dasd_device *device;
struct dasd_eckd_private *private;
struct eckd_count *count_area;
unsigned int sb, blk_per_trk;
int status, i;
+ device = block->base;
private = (struct dasd_eckd_private *) device->private;
status = private->init_cqr_status;
private->init_cqr_status = -1;
private->uses_cdl = 1;
/* Calculate number of blocks/records per track. */
- blk_per_trk = recs_per_track(&private->rdc_data, 0, device->bp_block);
+ blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block);
/* Check Track 0 for Compatible Disk Layout */
count_area = NULL;
for (i = 0; i < 3; i++) {
if (count_area != NULL && count_area->kl == 0) {
/* we found notthing violating our disk layout */
if (dasd_check_blocksize(count_area->dl) == 0)
- device->bp_block = count_area->dl;
+ block->bp_block = count_area->dl;
}
- if (device->bp_block == 0) {
+ if (block->bp_block == 0) {
DEV_MESSAGE(KERN_WARNING, device, "%s",
"Volume has incompatible disk layout");
return -EMEDIUMTYPE;
}
- device->s2b_shift = 0; /* bits to shift 512 to get a block */
- for (sb = 512; sb < device->bp_block; sb = sb << 1)
- device->s2b_shift++;
+ block->s2b_shift = 0; /* bits to shift 512 to get a block */
+ for (sb = 512; sb < block->bp_block; sb = sb << 1)
+ block->s2b_shift++;
- blk_per_trk = recs_per_track(&private->rdc_data, 0, device->bp_block);
- device->blocks = (private->rdc_data.no_cyl *
+ blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block);
+ block->blocks = (private->rdc_data.no_cyl *
private->rdc_data.trk_per_cyl *
blk_per_trk);
DEV_MESSAGE(KERN_INFO, device,
"(%dkB blks): %dkB at %dkB/trk %s",
- (device->bp_block >> 10),
+ (block->bp_block >> 10),
((private->rdc_data.no_cyl *
private->rdc_data.trk_per_cyl *
- blk_per_trk * (device->bp_block >> 9)) >> 1),
- ((blk_per_trk * device->bp_block) >> 10),
+ blk_per_trk * (block->bp_block >> 9)) >> 1),
+ ((blk_per_trk * block->bp_block) >> 10),
private->uses_cdl ?
"compatible disk layout" : "linux disk layout");
return 0;
}
-static int
-dasd_eckd_do_analysis(struct dasd_device *device)
+static int dasd_eckd_do_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
- private = (struct dasd_eckd_private *) device->private;
+ private = (struct dasd_eckd_private *) block->base->private;
if (private->init_cqr_status < 0)
- return dasd_eckd_start_analysis(device);
+ return dasd_eckd_start_analysis(block);
else
- return dasd_eckd_end_analysis(device);
+ return dasd_eckd_end_analysis(block);
}
+static int dasd_eckd_ready_to_online(struct dasd_device *device)
+{
+ return dasd_alias_add_device(device);
+};
+
+static int dasd_eckd_online_to_ready(struct dasd_device *device)
+{
+ return dasd_alias_remove_device(device);
+};
+
static int
-dasd_eckd_fill_geometry(struct dasd_device *device, struct hd_geometry *geo)
+dasd_eckd_fill_geometry(struct dasd_block *block, struct hd_geometry *geo)
{
struct dasd_eckd_private *private;
- private = (struct dasd_eckd_private *) device->private;
- if (dasd_check_blocksize(device->bp_block) == 0) {
+ private = (struct dasd_eckd_private *) block->base->private;
+ if (dasd_check_blocksize(block->bp_block) == 0) {
geo->sectors = recs_per_track(&private->rdc_data,
- 0, device->bp_block);
+ 0, block->bp_block);
}
geo->cylinders = private->rdc_data.no_cyl;
geo->heads = private->rdc_data.trk_per_cyl;
locate_record(ccw++, (struct LO_eckd_data *) data,
fdata->start_unit, 0, rpt + 1,
DASD_ECKD_CCW_WRITE_RECORD_ZERO, device,
- device->bp_block);
+ device->block->bp_block);
data += sizeof(struct LO_eckd_data);
break;
case 0x04: /* Invalidate track. */
if (i < 3) {
ect->kl = 4;
ect->dl = sizes_trk0[i] - 4;
- }
+ }
}
if ((fdata->intensity & 0x08) &&
fdata->start_unit == 1) {
ccw++;
}
}
- fcp->device = device;
- fcp->retries = 2; /* set retry counter to enable ERP */
+ fcp->startdev = device;
+ fcp->memdev = device;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &fcp->flags);
+ fcp->retries = 5; /* set retry counter to enable default ERP */
fcp->buildclk = get_clock();
fcp->status = DASD_CQR_FILLED;
return fcp;
}
-static dasd_era_t
-dasd_eckd_examine_error(struct dasd_ccw_req * cqr, struct irb * irb)
+static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr)
{
- struct dasd_device *device = (struct dasd_device *) cqr->device;
- struct ccw_device *cdev = device->cdev;
-
- if (irb->scsw.cstat == 0x00 &&
- irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
- return dasd_era_none;
-
- switch (cdev->id.cu_type) {
- case 0x3990:
- case 0x2105:
- case 0x2107:
- case 0x1750:
- return dasd_3990_erp_examine(cqr, irb);
- case 0x9343:
- return dasd_9343_erp_examine(cqr, irb);
- case 0x3880:
- default:
- DEV_MESSAGE(KERN_WARNING, device, "%s",
- "default (unknown CU type) - RECOVERABLE return");
- return dasd_era_recover;
+ cqr->status = DASD_CQR_FILLED;
+ if (cqr->block && (cqr->startdev != cqr->block->base)) {
+ dasd_eckd_reset_ccw_to_base_io(cqr);
+ cqr->startdev = cqr->block->base;
}
-}
+};
static dasd_erp_fn_t
dasd_eckd_erp_action(struct dasd_ccw_req * cqr)
{
- struct dasd_device *device = (struct dasd_device *) cqr->device;
+ struct dasd_device *device = (struct dasd_device *) cqr->startdev;
struct ccw_device *cdev = device->cdev;
switch (cdev->id.cu_type) {
return dasd_default_erp_postaction;
}
-static struct dasd_ccw_req *
-dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
+
+static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device,
+ struct irb *irb)
+{
+ char mask;
+
+ /* first of all check for state change pending interrupt */
+ mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
+ if ((irb->scsw.cmd.dstat & mask) == mask) {
+ dasd_generic_handle_state_change(device);
+ return;
+ }
+
+ /* summary unit check */
+ if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) &&
+ (irb->ecw[7] == 0x0D)) {
+ dasd_alias_handle_summary_unit_check(device, irb);
+ return;
+ }
+
+
+ /* service information message SIM */
+ if (irb->esw.esw0.erw.cons && !(irb->ecw[27] & DASD_SENSE_BIT_0) &&
+ ((irb->ecw[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)) {
+ dasd_3990_erp_handle_sim(device, irb->ecw);
+ dasd_schedule_device_bh(device);
+ return;
+ }
+
+ if ((irb->scsw.cmd.cc == 1) &&
+ (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC) &&
+ (irb->scsw.cmd.actl & SCSW_ACTL_START_PEND) &&
+ (irb->scsw.cmd.stctl & SCSW_STCTL_STATUS_PEND)) {
+ /* fake irb do nothing, they are handled elsewhere */
+ dasd_schedule_device_bh(device);
+ return;
+ }
+
+ if (!(irb->esw.esw0.erw.cons)) {
+ /* just report other unsolicited interrupts */
+ DEV_MESSAGE(KERN_ERR, device, "%s",
+ "unsolicited interrupt received");
+ } else {
+ DEV_MESSAGE(KERN_ERR, device, "%s",
+ "unsolicited interrupt received "
+ "(sense available)");
+ device->discipline->dump_sense(device, NULL, irb);
+ }
+
+ dasd_schedule_device_bh(device);
+ return;
+};
+
+static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req)
{
struct dasd_eckd_private *private;
unsigned long *idaws;
struct LO_eckd_data *LO_data;
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
- struct bio *bio;
+ struct req_iterator iter;
struct bio_vec *bv;
char *dst;
unsigned int blksize, blk_per_trk, off;
sector_t first_trk, last_trk;
unsigned int first_offs, last_offs;
unsigned char cmd, rcmd;
- int i;
+ int use_prefix;
+ struct dasd_device *basedev;
- private = (struct dasd_eckd_private *) device->private;
+ basedev = block->base;
+ private = (struct dasd_eckd_private *) basedev->private;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_MT;
else if (rq_data_dir(req) == WRITE)
else
return ERR_PTR(-EINVAL);
/* Calculate number of blocks/records per track. */
- blksize = device->bp_block;
+ blksize = block->bp_block;
blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
/* Calculate record id of first and last block. */
- first_rec = first_trk = req->sector >> device->s2b_shift;
+ first_rec = first_trk = req->sector >> block->s2b_shift;
first_offs = sector_div(first_trk, blk_per_trk);
last_rec = last_trk =
- (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
+ (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
last_offs = sector_div(last_trk, blk_per_trk);
/* Check struct bio and count the number of blocks for the request. */
count = 0;
cidaw = 0;
- rq_for_each_bio(bio, req) {
- bio_for_each_segment(bv, bio, i) {
- if (bv->bv_len & (blksize - 1))
- /* Eckd can only do full blocks. */
- return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (device->s2b_shift + 9);
+ rq_for_each_segment(bv, req, iter) {
+ if (bv->bv_len & (blksize - 1))
+ /* Eckd can only do full blocks. */
+ return ERR_PTR(-EINVAL);
+ count += bv->bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
- if (idal_is_needed (page_address(bv->bv_page),
- bv->bv_len))
- cidaw += bv->bv_len >> (device->s2b_shift + 9);
+ if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
+ cidaw += bv->bv_len >> (block->s2b_shift + 9);
#endif
- }
}
/* Paranoia. */
if (count != last_rec - first_rec + 1)
return ERR_PTR(-EINVAL);
- /* 1x define extent + 1x locate record + number of blocks */
- cplength = 2 + count;
- /* 1x define extent + 1x locate record + cidaws*sizeof(long) */
- datasize = sizeof(struct DE_eckd_data) + sizeof(struct LO_eckd_data) +
- cidaw * sizeof(unsigned long);
+
+ /* use the prefix command if available */
+ use_prefix = private->features.feature[8] & 0x01;
+ if (use_prefix) {
+ /* 1x prefix + number of blocks */
+ cplength = 2 + count;
+ /* 1x prefix + cidaws*sizeof(long) */
+ datasize = sizeof(struct PFX_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ cidaw * sizeof(unsigned long);
+ } else {
+ /* 1x define extent + 1x locate record + number of blocks */
+ cplength = 2 + count;
+ /* 1x define extent + 1x locate record + cidaws*sizeof(long) */
+ datasize = sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ cidaw * sizeof(unsigned long);
+ }
/* Find out the number of additional locate record ccws for cdl. */
if (private->uses_cdl && first_rec < 2*blk_per_trk) {
if (last_rec >= 2*blk_per_trk)
}
/* Allocate the ccw request. */
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
- cplength, datasize, device);
+ cplength, datasize, startdev);
if (IS_ERR(cqr))
return cqr;
ccw = cqr->cpaddr;
- /* First ccw is define extent. */
- define_extent(ccw++, cqr->data, first_trk, last_trk, cmd, device);
+ /* First ccw is define extent or prefix. */
+ if (use_prefix) {
+ if (prefix(ccw++, cqr->data, first_trk,
+ last_trk, cmd, basedev, startdev) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+ idaws = (unsigned long *) (cqr->data +
+ sizeof(struct PFX_eckd_data));
+ } else {
+ if (define_extent(ccw++, cqr->data, first_trk,
+ last_trk, cmd, startdev) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+ idaws = (unsigned long *) (cqr->data +
+ sizeof(struct DE_eckd_data));
+ }
/* Build locate_record+read/write/ccws. */
- idaws = (unsigned long *) (cqr->data + sizeof(struct DE_eckd_data));
LO_data = (struct LO_eckd_data *) (idaws + cidaw);
recid = first_rec;
if (private->uses_cdl == 0 || recid > 2*blk_per_trk) {
/* Only standard blocks so there is just one locate record. */
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++, first_trk, first_offs + 1,
- last_rec - recid + 1, cmd, device, blksize);
+ last_rec - recid + 1, cmd, basedev, blksize);
}
- rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+ rq_for_each_segment(bv, req, iter) {
dst = page_address(bv->bv_page) + bv->bv_offset;
if (dasd_page_cache) {
char *copy = kmem_cache_alloc(dasd_page_cache,
- SLAB_DMA | __GFP_NOWARN);
+ GFP_DMA | __GFP_NOWARN);
if (copy && rq_data_dir(req) == WRITE)
memcpy(copy + bv->bv_offset, dst, bv->bv_len);
if (copy)
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, LO_data++,
trkid, recoffs + 1,
- 1, rcmd, device, count);
+ 1, rcmd, basedev, count);
}
/* Locate record for standard blocks ? */
if (private->uses_cdl && recid == 2*blk_per_trk) {
locate_record(ccw++, LO_data++,
trkid, recoffs + 1,
last_rec - recid + 1,
- cmd, device, count);
+ cmd, basedev, count);
}
/* Read/write ccw. */
ccw[-1].flags |= CCW_FLAG_CC;
recid++;
}
}
- if (req->flags & REQ_FAILFAST)
+ if (blk_noretry_request(req))
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->device = device;
+ cqr->startdev = startdev;
+ cqr->memdev = startdev;
+ cqr->block = block;
cqr->expires = 5 * 60 * HZ; /* 5 minutes */
cqr->lpm = private->path_data.ppm;
cqr->retries = 256;
{
struct dasd_eckd_private *private;
struct ccw1 *ccw;
- struct bio *bio;
+ struct req_iterator iter;
struct bio_vec *bv;
char *dst, *cda;
unsigned int blksize, blk_per_trk, off;
sector_t recid;
- int i, status;
+ int status;
if (!dasd_page_cache)
goto out;
- private = (struct dasd_eckd_private *) cqr->device->private;
- blksize = cqr->device->bp_block;
+ private = (struct dasd_eckd_private *) cqr->block->base->private;
+ blksize = cqr->block->bp_block;
blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
- recid = req->sector >> cqr->device->s2b_shift;
+ recid = req->sector >> cqr->block->s2b_shift;
ccw = cqr->cpaddr;
/* Skip over define extent & locate record. */
ccw++;
if (private->uses_cdl == 0 || recid > 2*blk_per_trk)
ccw++;
- rq_for_each_bio(bio, req) bio_for_each_segment(bv, bio, i) {
+ rq_for_each_segment(bv, req, iter) {
dst = page_address(bv->bv_page) + bv->bv_offset;
for (off = 0; off < bv->bv_len; off += blksize) {
/* Skip locate record. */
}
out:
status = cqr->status == DASD_CQR_DONE;
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return status;
}
+/*
+ * Modify ccw chain in cqr so it can be started on a base device.
+ *
+ * Note that this is not enough to restart the cqr!
+ * Either reset cqr->startdev as well (summary unit check handling)
+ * or restart via separate cqr (as in ERP handling).
+ */
+void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *cqr)
+{
+ struct ccw1 *ccw;
+ struct PFX_eckd_data *pfxdata;
+
+ ccw = cqr->cpaddr;
+ pfxdata = cqr->data;
+
+ if (ccw->cmd_code == DASD_ECKD_CCW_PFX) {
+ pfxdata->validity.verify_base = 0;
+ pfxdata->validity.hyper_pav = 0;
+ }
+}
+
+#define DASD_ECKD_CHANQ_MAX_SIZE 4
+
+static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base,
+ struct dasd_block *block,
+ struct request *req)
+{
+ struct dasd_eckd_private *private;
+ struct dasd_device *startdev;
+ unsigned long flags;
+ struct dasd_ccw_req *cqr;
+
+ startdev = dasd_alias_get_start_dev(base);
+ if (!startdev)
+ startdev = base;
+ private = (struct dasd_eckd_private *) startdev->private;
+ if (private->count >= DASD_ECKD_CHANQ_MAX_SIZE)
+ return ERR_PTR(-EBUSY);
+
+ spin_lock_irqsave(get_ccwdev_lock(startdev->cdev), flags);
+ private->count++;
+ cqr = dasd_eckd_build_cp(startdev, block, req);
+ if (IS_ERR(cqr))
+ private->count--;
+ spin_unlock_irqrestore(get_ccwdev_lock(startdev->cdev), flags);
+ return cqr;
+}
+
+static int dasd_eckd_free_alias_cp(struct dasd_ccw_req *cqr,
+ struct request *req)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+
+ spin_lock_irqsave(get_ccwdev_lock(cqr->memdev->cdev), flags);
+ private = (struct dasd_eckd_private *) cqr->memdev->private;
+ private->count--;
+ spin_unlock_irqrestore(get_ccwdev_lock(cqr->memdev->cdev), flags);
+ return dasd_eckd_free_cp(cqr, req);
+}
+
static int
dasd_eckd_fill_info(struct dasd_device * device,
struct dasd_information2_t * info)
info->characteristics_size = sizeof(struct dasd_eckd_characteristics);
memcpy(info->characteristics, &private->rdc_data,
sizeof(struct dasd_eckd_characteristics));
- info->confdata_size = sizeof (struct dasd_eckd_confdata);
- memcpy(info->configuration_data, &private->conf_data,
- sizeof (struct dasd_eckd_confdata));
+ info->confdata_size = min((unsigned long)private->conf_len,
+ sizeof(info->configuration_data));
+ memcpy(info->configuration_data, private->conf_data,
+ info->confdata_size);
return 0;
}
/*
* Release device ioctl.
- * Buils a channel programm to releases a prior reserved
+ * Buils a channel programm to releases a prior reserved
* (see dasd_eckd_reserve) device.
*/
static int
-dasd_eckd_release(struct block_device *bdev, int no, long args)
+dasd_eckd_release(struct dasd_device *device)
{
- struct dasd_device *device;
struct dasd_ccw_req *cqr;
int rc;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
1, 32, device);
if (IS_ERR(cqr)) {
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->retries = 0;
+ cqr->retries = 2; /* set retry counter to enable basic ERP */
cqr->expires = 2 * HZ;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
/*
* Reserve device ioctl.
* Options are set to 'synchronous wait for interrupt' and
- * 'timeout the request'. This leads to a terminate IO if
- * the interrupt is outstanding for a certain time.
+ * 'timeout the request'. This leads to a terminate IO if
+ * the interrupt is outstanding for a certain time.
*/
static int
-dasd_eckd_reserve(struct block_device *bdev, int no, long args)
+dasd_eckd_reserve(struct dasd_device *device)
{
- struct dasd_device *device;
struct dasd_ccw_req *cqr;
int rc;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
1, 32, device);
if (IS_ERR(cqr)) {
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->retries = 0;
+ cqr->retries = 2; /* set retry counter to enable basic ERP */
cqr->expires = 2 * HZ;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
/*
* Steal lock ioctl - unconditional reserve device.
- * Buils a channel programm to break a device's reservation.
+ * Buils a channel programm to break a device's reservation.
* (unconditional reserve)
*/
static int
-dasd_eckd_steal_lock(struct block_device *bdev, int no, long args)
+dasd_eckd_steal_lock(struct dasd_device *device)
{
- struct dasd_device *device;
struct dasd_ccw_req *cqr;
int rc;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
1, 32, device);
if (IS_ERR(cqr)) {
cqr->cpaddr->flags |= CCW_FLAG_SLI;
cqr->cpaddr->count = 32;
cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->retries = 0;
+ cqr->retries = 2; /* set retry counter to enable basic ERP */
cqr->expires = 2 * HZ;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
* Read performance statistics
*/
static int
-dasd_eckd_performance(struct block_device *bdev, int no, long args)
+dasd_eckd_performance(struct dasd_device *device, void __user *argp)
{
- struct dasd_device *device;
struct dasd_psf_prssd_data *prssdp;
struct dasd_rssd_perf_stats_t *stats;
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
int rc;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
1 /* PSF */ + 1 /* RSSD */ ,
- (sizeof (struct dasd_psf_prssd_data) +
- sizeof (struct dasd_rssd_perf_stats_t)),
+ (sizeof(struct dasd_psf_prssd_data) +
+ sizeof(struct dasd_rssd_perf_stats_t)),
device);
if (IS_ERR(cqr)) {
DEV_MESSAGE(KERN_WARNING, device, "%s",
"Could not allocate initialization request");
return PTR_ERR(cqr);
}
- cqr->device = device;
+ cqr->startdev = device;
+ cqr->memdev = device;
cqr->retries = 0;
cqr->expires = 10 * HZ;
/* Prepare for Read Subsystem Data */
prssdp = (struct dasd_psf_prssd_data *) cqr->data;
- memset(prssdp, 0, sizeof (struct dasd_psf_prssd_data));
+ memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data));
prssdp->order = PSF_ORDER_PRSSD;
- prssdp->suborder = 0x01; /* Perfomance Statistics */
+ prssdp->suborder = 0x01; /* Performance Statistics */
prssdp->varies[1] = 0x01; /* Perf Statistics for the Subsystem */
ccw = cqr->cpaddr;
ccw->cmd_code = DASD_ECKD_CCW_PSF;
- ccw->count = sizeof (struct dasd_psf_prssd_data);
+ ccw->count = sizeof(struct dasd_psf_prssd_data);
ccw->flags |= CCW_FLAG_CC;
ccw->cda = (__u32)(addr_t) prssdp;
/* Read Subsystem Data - Performance Statistics */
stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1);
- memset(stats, 0, sizeof (struct dasd_rssd_perf_stats_t));
+ memset(stats, 0, sizeof(struct dasd_rssd_perf_stats_t));
ccw++;
ccw->cmd_code = DASD_ECKD_CCW_RSSD;
- ccw->count = sizeof (struct dasd_rssd_perf_stats_t);
+ ccw->count = sizeof(struct dasd_rssd_perf_stats_t);
ccw->cda = (__u32)(addr_t) stats;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on(cqr);
if (rc == 0) {
- /* Prepare for Read Subsystem Data */
prssdp = (struct dasd_psf_prssd_data *) cqr->data;
stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1);
- rc = copy_to_user((long __user *) args, (long *) stats,
- sizeof(struct dasd_rssd_perf_stats_t));
+ if (copy_to_user(argp, stats,
+ sizeof(struct dasd_rssd_perf_stats_t)))
+ rc = -EFAULT;
}
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return rc;
}
* Returnes the cache attributes used in Define Extend (DE).
*/
static int
-dasd_eckd_get_attrib (struct block_device *bdev, int no, long args)
+dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp)
{
- struct dasd_device *device;
- struct dasd_eckd_private *private;
- struct attrib_data_t attrib;
+ struct dasd_eckd_private *private =
+ (struct dasd_eckd_private *)device->private;
+ struct attrib_data_t attrib = private->attrib;
int rc;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (!args)
+ if (!argp)
return -EINVAL;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
- private = (struct dasd_eckd_private *) device->private;
- attrib = private->attrib;
-
- rc = copy_to_user((long __user *) args, (long *) &attrib,
- sizeof (struct attrib_data_t));
+ rc = 0;
+ if (copy_to_user(argp, (long *) &attrib,
+ sizeof(struct attrib_data_t)))
+ rc = -EFAULT;
return rc;
}
* Stores the attributes for cache operation to be used in Define Extend (DE).
*/
static int
-dasd_eckd_set_attrib(struct block_device *bdev, int no, long args)
+dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp)
{
- struct dasd_device *device;
- struct dasd_eckd_private *private;
+ struct dasd_eckd_private *private =
+ (struct dasd_eckd_private *)device->private;
struct attrib_data_t attrib;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- if (!args)
+ if (!argp)
return -EINVAL;
- device = bdev->bd_disk->private_data;
- if (device == NULL)
- return -ENODEV;
-
- if (copy_from_user(&attrib, (void __user *) args,
- sizeof (struct attrib_data_t))) {
+ if (copy_from_user(&attrib, argp, sizeof(struct attrib_data_t)))
return -EFAULT;
- }
- private = (struct dasd_eckd_private *) device->private;
private->attrib = attrib;
DEV_MESSAGE(KERN_INFO, device,
}
/*
+ * Issue syscall I/O to EMC Symmetrix array.
+ * CCWs are PSF and RSSD
+ */
+static int dasd_symm_io(struct dasd_device *device, void __user *argp)
+{
+ struct dasd_symmio_parms usrparm;
+ char *psf_data, *rssd_result;
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+ int rc;
+
+ /* Copy parms from caller */
+ rc = -EFAULT;
+ if (copy_from_user(&usrparm, argp, sizeof(usrparm)))
+ goto out;
+#ifndef CONFIG_64BIT
+ /* Make sure pointers are sane even on 31 bit. */
+ if ((usrparm.psf_data >> 32) != 0 || (usrparm.rssd_result >> 32) != 0) {
+ rc = -EINVAL;
+ goto out;
+ }
+#endif
+ /* alloc I/O data area */
+ psf_data = kzalloc(usrparm.psf_data_len, GFP_KERNEL | GFP_DMA);
+ rssd_result = kzalloc(usrparm.rssd_result_len, GFP_KERNEL | GFP_DMA);
+ if (!psf_data || !rssd_result) {
+ rc = -ENOMEM;
+ goto out_free;
+ }
+
+ /* get syscall header from user space */
+ rc = -EFAULT;
+ if (copy_from_user(psf_data,
+ (void __user *)(unsigned long) usrparm.psf_data,
+ usrparm.psf_data_len))
+ goto out_free;
+
+ /* sanity check on syscall header */
+ if (psf_data[0] != 0x17 && psf_data[1] != 0xce) {
+ rc = -EINVAL;
+ goto out_free;
+ }
+
+ /* setup CCWs for PSF + RSSD */
+ cqr = dasd_smalloc_request("ECKD", 2 , 0, device);
+ if (IS_ERR(cqr)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "Could not allocate initialization request");
+ rc = PTR_ERR(cqr);
+ goto out_free;
+ }
+
+ cqr->startdev = device;
+ cqr->memdev = device;
+ cqr->retries = 3;
+ cqr->expires = 10 * HZ;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+
+ /* Build the ccws */
+ ccw = cqr->cpaddr;
+
+ /* PSF ccw */
+ ccw->cmd_code = DASD_ECKD_CCW_PSF;
+ ccw->count = usrparm.psf_data_len;
+ ccw->flags |= CCW_FLAG_CC;
+ ccw->cda = (__u32)(addr_t) psf_data;
+
+ ccw++;
+
+ /* RSSD ccw */
+ ccw->cmd_code = DASD_ECKD_CCW_RSSD;
+ ccw->count = usrparm.rssd_result_len;
+ ccw->flags = CCW_FLAG_SLI ;
+ ccw->cda = (__u32)(addr_t) rssd_result;
+
+ rc = dasd_sleep_on(cqr);
+ if (rc)
+ goto out_sfree;
+
+ rc = -EFAULT;
+ if (copy_to_user((void __user *)(unsigned long) usrparm.rssd_result,
+ rssd_result, usrparm.rssd_result_len))
+ goto out_sfree;
+ rc = 0;
+
+out_sfree:
+ dasd_sfree_request(cqr, cqr->memdev);
+out_free:
+ kfree(rssd_result);
+ kfree(psf_data);
+out:
+ DBF_DEV_EVENT(DBF_WARNING, device, "Symmetrix ioctl: rc=%d", rc);
+ return rc;
+}
+
+static int
+dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp)
+{
+ struct dasd_device *device = block->base;
+
+ switch (cmd) {
+ case BIODASDGATTR:
+ return dasd_eckd_get_attrib(device, argp);
+ case BIODASDSATTR:
+ return dasd_eckd_set_attrib(device, argp);
+ case BIODASDPSRD:
+ return dasd_eckd_performance(device, argp);
+ case BIODASDRLSE:
+ return dasd_eckd_release(device);
+ case BIODASDRSRV:
+ return dasd_eckd_reserve(device);
+ case BIODASDSLCK:
+ return dasd_eckd_steal_lock(device);
+ case BIODASDSYMMIO:
+ return dasd_symm_io(device, argp);
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+/*
+ * Dump the range of CCWs into 'page' buffer
+ * and return number of printed chars.
+ */
+static int
+dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page)
+{
+ int len, count;
+ char *datap;
+
+ len = 0;
+ while (from <= to) {
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " CCW %p: %08X %08X DAT:",
+ from, ((int *) from)[0], ((int *) from)[1]);
+
+ /* get pointer to data (consider IDALs) */
+ if (from->flags & CCW_FLAG_IDA)
+ datap = (char *) *((addr_t *) (addr_t) from->cda);
+ else
+ datap = (char *) ((addr_t) from->cda);
+
+ /* dump data (max 32 bytes) */
+ for (count = 0; count < from->count && count < 32; count++) {
+ if (count % 8 == 0) len += sprintf(page + len, " ");
+ if (count % 4 == 0) len += sprintf(page + len, " ");
+ len += sprintf(page + len, "%02x", datap[count]);
+ }
+ len += sprintf(page + len, "\n");
+ from++;
+ }
+ return len;
+}
+
+/*
* Print sense data and related channel program.
* Parts are printed because printk buffer is only 1024 bytes.
*/
-static void
-dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req,
- struct irb *irb)
+static void dasd_eckd_dump_sense(struct dasd_device *device,
+ struct dasd_ccw_req *req, struct irb *irb)
{
char *page;
- struct ccw1 *act, *end, *last;
- int len, sl, sct, count;
+ struct ccw1 *first, *last, *fail, *from, *to;
+ int len, sl, sct;
page = (char *) get_zeroed_page(GFP_ATOMIC);
if (page == NULL) {
"No memory to dump sense data");
return;
}
- len = sprintf(page, KERN_ERR PRINTK_HEADER
+ /* dump the sense data */
+ len = sprintf(page, KERN_ERR PRINTK_HEADER
" I/O status report for device %s:\n",
- device->cdev->dev.bus_id);
+ dev_name(&device->cdev->dev));
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" in req: %p CS: 0x%02X DS: 0x%02X\n", req,
- irb->scsw.cstat, irb->scsw.dstat);
+ irb->scsw.cmd.cstat, irb->scsw.cmd.dstat);
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" device %s: Failing CCW: %p\n",
- device->cdev->dev.bus_id,
- (void *) (addr_t) irb->scsw.cpa);
+ dev_name(&device->cdev->dev),
+ (void *) (addr_t) irb->scsw.cmd.cpa);
if (irb->esw.esw0.erw.cons) {
for (sl = 0; sl < 4; sl++) {
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
if (irb->ecw[27] & DASD_SENSE_BIT_0) {
/* 24 Byte Sense Data */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " 24 Byte: %x MSG %x, "
- "%s MSGb to SYSOP\n",
- irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
- irb->ecw[1] & 0x10 ? "" : "no");
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " 24 Byte: %x MSG %x, "
+ "%s MSGb to SYSOP\n",
+ irb->ecw[7] >> 4, irb->ecw[7] & 0x0f,
+ irb->ecw[1] & 0x10 ? "" : "no");
} else {
/* 32 Byte Sense Data */
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " 32 Byte: Format: %x "
- "Exception class %x\n",
- irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " 32 Byte: Format: %x "
+ "Exception class %x\n",
+ irb->ecw[6] & 0x0f, irb->ecw[22] >> 4);
}
} else {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " SORRY - NO VALID SENSE AVAILABLE\n");
- }
- MESSAGE_LOG(KERN_ERR, "%s",
- page + sizeof(KERN_ERR PRINTK_HEADER));
-
- /* dump the Channel Program */
- /* print first CCWs (maximum 8) */
- act = req->cpaddr;
- for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
- end = min(act + 8, last);
- len = sprintf(page, KERN_ERR PRINTK_HEADER
- " Related CP in req: %p\n", req);
- while (act <= end) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " CCW %p: %08X %08X DAT:",
- act, ((int *) act)[0], ((int *) act)[1]);
- for (count = 0; count < 32 && count < act->count;
- count += sizeof(int))
- len += sprintf(page + len, " %08X",
- ((int *) (addr_t) act->cda)
- [(count>>2)]);
- len += sprintf(page + len, "\n");
- act++;
- }
- MESSAGE_LOG(KERN_ERR, "%s",
- page + sizeof(KERN_ERR PRINTK_HEADER));
-
- /* print failing CCW area */
- len = 0;
- if (act < ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2) {
- act = ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2;
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
- }
- end = min((struct ccw1 *)(addr_t) irb->scsw.cpa + 2, last);
- while (act <= end) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " CCW %p: %08X %08X DAT:",
- act, ((int *) act)[0], ((int *) act)[1]);
- for (count = 0; count < 32 && count < act->count;
- count += sizeof(int))
- len += sprintf(page + len, " %08X",
- ((int *) (addr_t) act->cda)
- [(count>>2)]);
- len += sprintf(page + len, "\n");
- act++;
- }
-
- /* print last CCWs */
- if (act < last - 2) {
- act = last - 2;
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " SORRY - NO VALID SENSE AVAILABLE\n");
}
- while (act <= last) {
- len += sprintf(page + len, KERN_ERR PRINTK_HEADER
- " CCW %p: %08X %08X DAT:",
- act, ((int *) act)[0], ((int *) act)[1]);
- for (count = 0; count < 32 && count < act->count;
- count += sizeof(int))
- len += sprintf(page + len, " %08X",
- ((int *) (addr_t) act->cda)
- [(count>>2)]);
- len += sprintf(page + len, "\n");
- act++;
+ printk("%s", page);
+
+ if (req) {
+ /* req == NULL for unsolicited interrupts */
+ /* dump the Channel Program (max 140 Bytes per line) */
+ /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */
+ first = req->cpaddr;
+ for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++);
+ to = min(first + 6, last);
+ len = sprintf(page, KERN_ERR PRINTK_HEADER
+ " Related CP in req: %p\n", req);
+ dasd_eckd_dump_ccw_range(first, to, page + len);
+ printk("%s", page);
+
+ /* print failing CCW area (maximum 4) */
+ /* scsw->cda is either valid or zero */
+ len = 0;
+ from = ++to;
+ fail = (struct ccw1 *)(addr_t)
+ irb->scsw.cmd.cpa; /* failing CCW */
+ if (from < fail - 2) {
+ from = fail - 2; /* there is a gap - print header */
+ len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n");
+ }
+ to = min(fail + 1, last);
+ len += dasd_eckd_dump_ccw_range(from, to, page + len);
+
+ /* print last CCWs (maximum 2) */
+ from = max(from, ++to);
+ if (from < last - 1) {
+ from = last - 1; /* there is a gap - print header */
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
+ }
+ len += dasd_eckd_dump_ccw_range(from, last, page + len);
+ if (len > 0)
+ printk("%s", page);
}
- if (len > 0)
- MESSAGE_LOG(KERN_ERR, "%s",
- page + sizeof(KERN_ERR PRINTK_HEADER));
free_page((unsigned long) page);
}
.ebcname = "ECKD",
.max_blocks = 240,
.check_device = dasd_eckd_check_characteristics,
+ .uncheck_device = dasd_eckd_uncheck_device,
.do_analysis = dasd_eckd_do_analysis,
+ .ready_to_online = dasd_eckd_ready_to_online,
+ .online_to_ready = dasd_eckd_online_to_ready,
.fill_geometry = dasd_eckd_fill_geometry,
.start_IO = dasd_start_IO,
.term_IO = dasd_term_IO,
+ .handle_terminated_request = dasd_eckd_handle_terminated_request,
.format_device = dasd_eckd_format_device,
- .examine_error = dasd_eckd_examine_error,
.erp_action = dasd_eckd_erp_action,
.erp_postaction = dasd_eckd_erp_postaction,
- .build_cp = dasd_eckd_build_cp,
- .free_cp = dasd_eckd_free_cp,
+ .handle_unsolicited_interrupt = dasd_eckd_handle_unsolicited_interrupt,
+ .build_cp = dasd_eckd_build_alias_cp,
+ .free_cp = dasd_eckd_free_alias_cp,
.dump_sense = dasd_eckd_dump_sense,
.fill_info = dasd_eckd_fill_info,
+ .ioctl = dasd_eckd_ioctl,
};
static int __init
dasd_eckd_init(void)
{
- int ret;
-
- dasd_ioctl_no_register(THIS_MODULE, BIODASDGATTR,
- dasd_eckd_get_attrib);
- dasd_ioctl_no_register(THIS_MODULE, BIODASDSATTR,
- dasd_eckd_set_attrib);
- dasd_ioctl_no_register(THIS_MODULE, BIODASDPSRD,
- dasd_eckd_performance);
- dasd_ioctl_no_register(THIS_MODULE, BIODASDRLSE,
- dasd_eckd_release);
- dasd_ioctl_no_register(THIS_MODULE, BIODASDRSRV,
- dasd_eckd_reserve);
- dasd_ioctl_no_register(THIS_MODULE, BIODASDSLCK,
- dasd_eckd_steal_lock);
-
ASCEBC(dasd_eckd_discipline.ebcname, 4);
-
- ret = ccw_driver_register(&dasd_eckd_driver);
- if (ret) {
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDGATTR,
- dasd_eckd_get_attrib);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSATTR,
- dasd_eckd_set_attrib);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDPSRD,
- dasd_eckd_performance);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRLSE,
- dasd_eckd_release);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRSRV,
- dasd_eckd_reserve);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSLCK,
- dasd_eckd_steal_lock);
- return ret;
- }
-
- dasd_generic_auto_online(&dasd_eckd_driver);
- return 0;
+ return ccw_driver_register(&dasd_eckd_driver);
}
static void __exit
dasd_eckd_cleanup(void)
{
ccw_driver_unregister(&dasd_eckd_driver);
-
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDGATTR,
- dasd_eckd_get_attrib);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSATTR,
- dasd_eckd_set_attrib);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDPSRD,
- dasd_eckd_performance);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRLSE,
- dasd_eckd_release);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRSRV,
- dasd_eckd_reserve);
- dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSLCK,
- dasd_eckd_steal_lock);
}
module_init(dasd_eckd_init);
module_exit(dasd_eckd_cleanup);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff