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@@ -381,15 +381,91 @@ static int storvsc_remove(struct hv_device *dev)
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return 0;
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}
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+
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+static int storvsc_get_chs(struct scsi_device *sdev, struct block_device * bdev,
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+ sector_t capacity, int *info)
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+{
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+ sector_t total_sectors = capacity;
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+ sector_t cylinder_times_heads = 0;
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+ sector_t temp = 0;
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+
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+ int sectors_per_track = 0;
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+ int heads = 0;
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+ int cylinders = 0;
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+ int rem = 0;
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+
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+ if (total_sectors > (65535 * 16 * 255))
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+ total_sectors = (65535 * 16 * 255);
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+
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+ if (total_sectors >= (65535 * 16 * 63)) {
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+ sectors_per_track = 255;
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+ heads = 16;
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+
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+ cylinder_times_heads = total_sectors;
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+ /* sector_div stores the quotient in cylinder_times_heads */
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+ rem = sector_div(cylinder_times_heads, sectors_per_track);
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+ } else {
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+ sectors_per_track = 17;
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+
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+ cylinder_times_heads = total_sectors;
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+ /* sector_div stores the quotient in cylinder_times_heads */
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+ rem = sector_div(cylinder_times_heads, sectors_per_track);
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+
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+ temp = cylinder_times_heads + 1023;
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+ /* sector_div stores the quotient in temp */
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+ rem = sector_div(temp, 1024);
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+
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+ heads = temp;
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+
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+ if (heads < 4)
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+ heads = 4;
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+
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+ if (cylinder_times_heads >= (heads * 1024) || (heads > 16)) {
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+ sectors_per_track = 31;
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+ heads = 16;
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+
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+ cylinder_times_heads = total_sectors;
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+ /*
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+ * sector_div stores the quotient in
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+ * cylinder_times_heads
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+ */
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+ rem = sector_div(cylinder_times_heads,
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+ sectors_per_track);
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+ }
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+
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+ if (cylinder_times_heads >= (heads * 1024)) {
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+ sectors_per_track = 63;
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+ heads = 16;
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+
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+ cylinder_times_heads = total_sectors;
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+ /*
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+ * sector_div stores the quotient in
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+ * cylinder_times_heads
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+ */
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+ rem = sector_div(cylinder_times_heads,
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+ sectors_per_track);
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+ }
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+ }
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+
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+ temp = cylinder_times_heads;
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+ /* sector_div stores the quotient in temp */
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+ rem = sector_div(temp, heads);
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+ cylinders = temp;
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+
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+ info[0] = heads;
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+ info[1] = sectors_per_track;
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+ info[2] = cylinders;
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+
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+ DPRINT_INFO(STORVSC_DRV, "CHS (%d, %d, %d)", cylinders, heads,
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+ sectors_per_track);
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+
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+ return 0;
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+}
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/* Static decl */
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static int storvsc_probe(struct hv_device *dev);
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static int storvsc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd);
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static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd);
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-static int storvsc_get_chs(struct scsi_device *sdev, struct block_device *bdev,
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- sector_t capacity, int *info);
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-
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-
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static int storvsc_ringbuffer_size = STORVSC_RING_BUFFER_SIZE;
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module_param(storvsc_ringbuffer_size, int, S_IRUGO);
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MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
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@@ -867,86 +943,6 @@ static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd)
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return ret;
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}
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-static int storvsc_get_chs(struct scsi_device *sdev, struct block_device * bdev,
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- sector_t capacity, int *info)
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-{
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- sector_t total_sectors = capacity;
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- sector_t cylinder_times_heads = 0;
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- sector_t temp = 0;
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-
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- int sectors_per_track = 0;
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- int heads = 0;
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- int cylinders = 0;
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- int rem = 0;
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-
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- if (total_sectors > (65535 * 16 * 255))
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- total_sectors = (65535 * 16 * 255);
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-
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- if (total_sectors >= (65535 * 16 * 63)) {
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- sectors_per_track = 255;
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- heads = 16;
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-
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- cylinder_times_heads = total_sectors;
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- /* sector_div stores the quotient in cylinder_times_heads */
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- rem = sector_div(cylinder_times_heads, sectors_per_track);
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- } else {
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- sectors_per_track = 17;
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-
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- cylinder_times_heads = total_sectors;
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- /* sector_div stores the quotient in cylinder_times_heads */
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- rem = sector_div(cylinder_times_heads, sectors_per_track);
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-
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- temp = cylinder_times_heads + 1023;
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- /* sector_div stores the quotient in temp */
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- rem = sector_div(temp, 1024);
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-
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- heads = temp;
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-
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- if (heads < 4)
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- heads = 4;
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-
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- if (cylinder_times_heads >= (heads * 1024) || (heads > 16)) {
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- sectors_per_track = 31;
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- heads = 16;
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-
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- cylinder_times_heads = total_sectors;
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- /*
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- * sector_div stores the quotient in
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- * cylinder_times_heads
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- */
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- rem = sector_div(cylinder_times_heads,
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- sectors_per_track);
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- }
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-
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- if (cylinder_times_heads >= (heads * 1024)) {
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- sectors_per_track = 63;
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- heads = 16;
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-
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- cylinder_times_heads = total_sectors;
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- /*
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- * sector_div stores the quotient in
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- * cylinder_times_heads
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- */
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- rem = sector_div(cylinder_times_heads,
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- sectors_per_track);
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- }
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- }
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-
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- temp = cylinder_times_heads;
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- /* sector_div stores the quotient in temp */
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- rem = sector_div(temp, heads);
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- cylinders = temp;
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-
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- info[0] = heads;
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- info[1] = sectors_per_track;
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- info[2] = cylinders;
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-
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- DPRINT_INFO(STORVSC_DRV, "CHS (%d, %d, %d)", cylinders, heads,
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- sectors_per_track);
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-
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- return 0;
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-}
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-
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static int __init storvsc_init(void)
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{
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int ret;
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