#include <linux/completion.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/scatterlist.h>
#include <asm/vio.h>
-#include <asm/scatterlist.h>
#include <asm/iseries/hv_types.h>
#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/vio.h>
#define VIOCD_KERN_WARNING KERN_WARNING "viocd: "
#define VIOCD_KERN_INFO KERN_INFO "viocd: "
-struct viocdlpevent {
- struct HvLpEvent event;
- u32 reserved;
- u16 version;
- u16 sub_result;
- u16 disk;
- u16 flags;
- u32 token;
- u64 offset; /* On open, max number of disks */
- u64 len; /* On open, size of the disk */
- u32 block_size; /* Only set on open */
- u32 media_size; /* Only set on open */
-};
-
-enum viocdsubtype {
- viocdopen = 0x0001,
- viocdclose = 0x0002,
- viocdread = 0x0003,
- viocdwrite = 0x0004,
- viocdlockdoor = 0x0005,
- viocdgetinfo = 0x0006,
- viocdcheck = 0x0007
-};
-
/*
* Should probably make this a module parameter....sigh
*/
/* These are our internal structures for keeping track of devices */
static int viocd_numdev;
-struct cdrom_info {
- char rsrcname[10];
- char type[4];
- char model[3];
-};
-/*
- * This needs to be allocated since it is passed to the
- * Hypervisor and we may be a module.
- */
-static struct cdrom_info *viocd_unitinfo;
-static dma_addr_t unitinfo_dmaaddr;
-
struct disk_info {
struct gendisk *viocd_disk;
struct cdrom_device_info viocd_info;
struct device *dev;
+ const char *rsrcname;
+ const char *type;
+ const char *model;
};
static struct disk_info viocd_diskinfo[VIOCD_MAX_CD];
for (i = 0; i < viocd_numdev; i++) {
seq_printf(m, "viocd device %d is iSeries resource %10.10s"
"type %4.4s, model %3.3s\n",
- i, viocd_unitinfo[i].rsrcname,
- viocd_unitinfo[i].type,
- viocd_unitinfo[i].model);
+ i, viocd_diskinfo[i].rsrcname,
+ viocd_diskinfo[i].type,
+ viocd_diskinfo[i].model);
}
return 0;
}
.media_changed = viocd_blk_media_changed,
};
-/* Get info on CD devices from OS/400 */
-static void __init get_viocd_info(void)
-{
- HvLpEvent_Rc hvrc;
- int i;
- struct viocd_waitevent we;
-
- viocd_unitinfo = dma_alloc_coherent(iSeries_vio_dev,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
- &unitinfo_dmaaddr, GFP_ATOMIC);
- if (viocd_unitinfo == NULL) {
- printk(VIOCD_KERN_WARNING "error allocating unitinfo\n");
- return;
- }
-
- memset(viocd_unitinfo, 0, sizeof(*viocd_unitinfo) * VIOCD_MAX_CD);
-
- init_completion(&we.com);
-
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdgetinfo,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)&we, VIOVERSION << 16, unitinfo_dmaaddr, 0,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD, 0);
- if (hvrc != HvLpEvent_Rc_Good) {
- printk(VIOCD_KERN_WARNING "cdrom error sending event. rc %d\n",
- (int)hvrc);
- goto error_ret;
- }
-
- wait_for_completion(&we.com);
-
- if (we.rc) {
- const struct vio_error_entry *err =
- vio_lookup_rc(viocd_err_table, we.sub_result);
- printk(VIOCD_KERN_WARNING "bad rc %d:0x%04X on getinfo: %s\n",
- we.rc, we.sub_result, err->msg);
- goto error_ret;
- }
-
- for (i = 0; (i < VIOCD_MAX_CD) && viocd_unitinfo[i].rsrcname[0]; i++)
- viocd_numdev++;
-
-error_ret:
- if (viocd_numdev == 0) {
- dma_free_coherent(iSeries_vio_dev,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
- viocd_unitinfo, unitinfo_dmaaddr);
- viocd_unitinfo = NULL;
- }
-}
-
static int viocd_open(struct cdrom_device_info *cdi, int purpose)
{
struct disk_info *diskinfo = cdi->handle;
cmd = viomajorsubtype_cdio | viocdwrite;
}
+ sg_init_table(&sg, 1);
if (blk_rq_map_sg(req->q, req, &sg) == 0) {
printk(VIOCD_KERN_WARNING
"error setting up scatter/gather list\n");
return 0;
}
-static void viocd_end_request(struct request *req, int uptodate)
+static void viocd_end_request(struct request *req, int error)
{
int nsectors = req->hard_nr_sectors;
if (!nsectors)
nsectors = 1;
- if (end_that_request_first(req, uptodate, nsectors))
+ if (__blk_end_request(req, error, nsectors << 9))
BUG();
- add_disk_randomness(req->rq_disk);
- blkdev_dequeue_request(req);
- end_that_request_last(req, uptodate);
}
static int rwreq;
-static void do_viocd_request(request_queue_t *q)
+static void do_viocd_request(struct request_queue *q)
{
struct request *req;
while ((rwreq == 0) && ((req = elv_next_request(q)) != NULL)) {
if (!blk_fs_request(req))
- viocd_end_request(req, 0);
+ viocd_end_request(req, -EIO);
else if (send_request(req) < 0) {
printk(VIOCD_KERN_WARNING
"unable to send message to OS/400!");
- viocd_end_request(req, 0);
+ viocd_end_request(req, -EIO);
} else
rwreq++;
}
bevent->block_size / 512);
}
/* FALLTHROUGH !! */
- case viocdgetinfo:
case viocdlockdoor:
pwe = (struct viocd_waitevent *)event->xCorrelationToken;
return_complete:
"with rc %d:0x%04X: %s\n",
req, event->xRc,
bevent->sub_result, err->msg);
- viocd_end_request(req, 0);
+ viocd_end_request(req, -EIO);
} else
- viocd_end_request(req, 1);
+ viocd_end_request(req, 0);
/* restart handling of incoming requests */
spin_unlock_irqrestore(&viocd_reqlock, flags);
.capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_GENERIC_PACKET | CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_RAM
};
-static int __init find_capability(const char *type)
+static int find_capability(const char *type)
{
struct capability_entry *entry;
int deviceno;
struct disk_info *d;
struct cdrom_device_info *c;
- struct cdrom_info *ci;
struct request_queue *q;
+ struct device_node *node = vdev->dev.archdata.of_node;
deviceno = vdev->unit_address;
- if (deviceno >= viocd_numdev)
+ if (deviceno > VIOCD_MAX_CD)
+ return -ENODEV;
+ if (!node)
return -ENODEV;
+ if (deviceno >= viocd_numdev)
+ viocd_numdev = deviceno + 1;
+
d = &viocd_diskinfo[deviceno];
+ d->rsrcname = of_get_property(node, "linux,vio_rsrcname", NULL);
+ d->type = of_get_property(node, "linux,vio_type", NULL);
+ d->model = of_get_property(node, "linux,vio_model", NULL);
+
c = &d->viocd_info;
- ci = &viocd_unitinfo[deviceno];
c->ops = &viocd_dops;
c->speed = 4;
c->capacity = 1;
c->handle = d;
- c->mask = ~find_capability(ci->type);
+ c->mask = ~find_capability(d->type);
sprintf(c->name, VIOCD_DEVICE "%c", 'a' + deviceno);
if (register_cdrom(c) != 0) {
}
printk(VIOCD_KERN_INFO "cd %s is iSeries resource %10.10s "
"type %4.4s, model %3.3s\n",
- c->name, ci->rsrcname, ci->type, ci->model);
+ c->name, d->rsrcname, d->type, d->model);
q = blk_init_queue(do_viocd_request, &viocd_reqlock);
if (q == NULL) {
printk(VIOCD_KERN_WARNING "Cannot allocate queue for %s!\n",
/* Initialize our request handler */
vio_setHandler(viomajorsubtype_cdio, vio_handle_cd_event);
- get_viocd_info();
-
spin_lock_init(&viocd_reqlock);
ret = vio_register_driver(&viocd_driver);
return 0;
out_free_info:
- dma_free_coherent(iSeries_vio_dev,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
- viocd_unitinfo, unitinfo_dmaaddr);
vio_clearHandler(viomajorsubtype_cdio);
viopath_close(viopath_hostLp, viomajorsubtype_cdio, MAX_CD_REQ + 2);
out_unregister:
{
remove_proc_entry("iSeries/viocd", NULL);
vio_unregister_driver(&viocd_driver);
- if (viocd_unitinfo != NULL)
- dma_free_coherent(iSeries_vio_dev,
- sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
- viocd_unitinfo, unitinfo_dmaaddr);
viopath_close(viopath_hostLp, viomajorsubtype_cdio, MAX_CD_REQ + 2);
vio_clearHandler(viomajorsubtype_cdio);
unregister_blkdev(VIOCD_MAJOR, VIOCD_DEVICE);