[POWERPC] iSeries: Move detection of virtual cdroms

[linux-2.6-omap-h63xx.git] / drivers / cdrom / viocd.c

diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index c081e5400ce00a47bd8077bfac96e3a1ee59dbe9..880b5dce3a62b8e1acfbd3a7aab8d98e837e8629 100644 (file)
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -56,30 +56,6 @@
 #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
  */
@@ -131,17 +107,13 @@ static struct capability_entry capability_table[] __initdata = {
 /* 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];
-};
-
 struct disk_info {
        struct gendisk                  *viocd_disk;
        struct cdrom_device_info        viocd_info;
        struct device                   *dev;
-       struct cdrom_info               unitinfo;
+       const char                      *rsrcname;
+       const char                      *type;
+       const char                      *model;
 };
 static struct disk_info viocd_diskinfo[VIOCD_MAX_CD];
 
@@ -159,9 +131,9 @@ static int proc_viocd_show(struct seq_file *m, void *v)
        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_diskinfo[i].unitinfo.rsrcname,
-                               viocd_diskinfo[i].unitinfo.type,
-                               viocd_diskinfo[i].unitinfo.model);
+                               i, viocd_diskinfo[i].rsrcname,
+                               viocd_diskinfo[i].type,
+                               viocd_diskinfo[i].model);
        }
        return 0;
 }
@@ -211,61 +183,6 @@ struct block_device_operations viocd_fops = {
        .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;
-       struct cdrom_info *viocd_unitinfo;
-       dma_addr_t unitinfo_dmaaddr;
-
-       viocd_unitinfo = iseries_hv_alloc(
-                       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_diskinfo[viocd_numdev].unitinfo = viocd_unitinfo[i];
-               viocd_numdev++;
-       }
-
-error_ret:
-       iseries_hv_free(sizeof(*viocd_unitinfo) * VIOCD_MAX_CD,
-                       viocd_unitinfo, unitinfo_dmaaddr);
-}
-
 static int viocd_open(struct cdrom_device_info *cdi, int purpose)
 {
         struct disk_info *diskinfo = cdi->handle;
@@ -576,7 +493,6 @@ static void vio_handle_cd_event(struct HvLpEvent *event)
                                        bevent->block_size / 512);
                }
                /* FALLTHROUGH !! */
-       case viocdgetinfo:
        case viocdlockdoor:
                pwe = (struct viocd_waitevent *)event->xCorrelationToken;
 return_complete:
@@ -660,22 +576,30 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id)
        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 = &d->unitinfo;
 
        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) {
@@ -685,7 +609,7 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id)
        }
        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",
@@ -794,8 +718,6 @@ static int __init viocd_init(void)
        /* 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);