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-rw-r--r--drivers/block/aoe/aoeblk.c4
-rw-r--r--drivers/block/aoe/aoecmd.c5
-rw-r--r--drivers/block/aoe/aoedev.c4
-rw-r--r--drivers/block/aoe/aoenet.c4
-rw-r--r--drivers/block/cciss.c2
-rw-r--r--drivers/block/cpqarray.c2
-rw-r--r--drivers/block/floppy.c87
-rw-r--r--drivers/block/lguest_blk.c36
-rw-r--r--drivers/block/loop.c4
-rw-r--r--drivers/block/nbd.c59
-rw-r--r--drivers/block/pktcdvd.c25
-rw-r--r--drivers/block/ps3disk.c42
-rw-r--r--drivers/block/rd.c4
-rw-r--r--drivers/block/umem.c238
-rw-r--r--drivers/block/umem.h133
-rw-r--r--drivers/block/xen-blkfront.c32
-rw-r--r--drivers/block/xsysace.c274
17 files changed, 607 insertions, 348 deletions
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 007faaf008e..b1d00ef6659 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -138,7 +138,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
buf = mempool_alloc(d->bufpool, GFP_NOIO);
if (buf == NULL) {
printk(KERN_INFO "aoe: buf allocation failure\n");
- bio_endio(bio, bio->bi_size, -ENOMEM);
+ bio_endio(bio, -ENOMEM);
return 0;
}
memset(buf, 0, sizeof(*buf));
@@ -159,7 +159,7 @@ aoeblk_make_request(struct request_queue *q, struct bio *bio)
d->aoemajor, d->aoeminor);
spin_unlock_irqrestore(&d->lock, flags);
mempool_free(buf, d->bufpool);
- bio_endio(bio, bio->bi_size, -ENXIO);
+ bio_endio(bio, -ENXIO);
return 0;
}
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 01fbdd38e3b..99672017ca5 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -9,6 +9,7 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/genhd.h>
+#include <net/net_namespace.h>
#include <asm/unaligned.h>
#include "aoe.h"
@@ -194,7 +195,7 @@ aoecmd_cfg_pkts(ushort aoemajor, unsigned char aoeminor, struct sk_buff **tail)
sl = sl_tail = NULL;
read_lock(&dev_base_lock);
- for_each_netdev(ifp) {
+ for_each_netdev(&init_net, ifp) {
dev_hold(ifp);
if (!is_aoe_netif(ifp))
goto cont;
@@ -652,7 +653,7 @@ aoecmd_ata_rsp(struct sk_buff *skb)
disk_stat_add(disk, sectors[rw], n_sect);
disk_stat_add(disk, io_ticks, duration);
n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
- bio_endio(buf->bio, buf->bio->bi_size, n);
+ bio_endio(buf->bio, n);
mempool_free(buf, d->bufpool);
}
}
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 05a97197c91..51f50710e5f 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -119,7 +119,7 @@ aoedev_downdev(struct aoedev *d)
bio = buf->bio;
if (--buf->nframesout == 0) {
mempool_free(buf, d->bufpool);
- bio_endio(bio, bio->bi_size, -EIO);
+ bio_endio(bio, -EIO);
}
skb_shinfo(f->skb)->nr_frags = f->skb->data_len = 0;
}
@@ -130,7 +130,7 @@ aoedev_downdev(struct aoedev *d)
list_del(d->bufq.next);
bio = buf->bio;
mempool_free(buf, d->bufpool);
- bio_endio(bio, bio->bi_size, -EIO);
+ bio_endio(bio, -EIO);
}
if (d->gd)
diff --git a/drivers/block/aoe/aoenet.c b/drivers/block/aoe/aoenet.c
index f9ddfda4d9c..4dc0fb7da94 100644
--- a/drivers/block/aoe/aoenet.c
+++ b/drivers/block/aoe/aoenet.c
@@ -8,6 +8,7 @@
#include <linux/blkdev.h>
#include <linux/netdevice.h>
#include <linux/moduleparam.h>
+#include <net/net_namespace.h>
#include <asm/unaligned.h>
#include "aoe.h"
@@ -114,6 +115,9 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt,
struct aoe_hdr *h;
u32 n;
+ if (ifp->nd_net != &init_net)
+ goto exit;
+
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
return 0;
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 084358a828e..28d145756f6 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1194,7 +1194,7 @@ static inline void complete_buffers(struct bio *bio, int status)
int nr_sectors = bio_sectors(bio);
bio->bi_next = NULL;
- bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
+ bio_endio(bio, status ? 0 : -EIO);
bio = xbh;
}
}
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index eb9799acf65..3853c9a38d6 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -987,7 +987,7 @@ static inline void complete_buffers(struct bio *bio, int ok)
xbh = bio->bi_next;
bio->bi_next = NULL;
- bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO);
+ bio_endio(bio, ok ? 0 : -EIO);
bio = xbh;
}
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 085b7794fb3..80483aac4cc 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -2437,22 +2437,19 @@ static void rw_interrupt(void)
/* Compute maximal contiguous buffer size. */
static int buffer_chain_size(void)
{
- struct bio *bio;
struct bio_vec *bv;
- int size, i;
+ int size;
+ struct req_iterator iter;
char *base;
base = bio_data(current_req->bio);
size = 0;
- rq_for_each_bio(bio, current_req) {
- bio_for_each_segment(bv, bio, i) {
- if (page_address(bv->bv_page) + bv->bv_offset !=
- base + size)
- break;
+ rq_for_each_segment(bv, current_req, iter) {
+ if (page_address(bv->bv_page) + bv->bv_offset != base + size)
+ break;
- size += bv->bv_len;
- }
+ size += bv->bv_len;
}
return size >> 9;
@@ -2479,9 +2476,9 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
{
int remaining; /* number of transferred 512-byte sectors */
struct bio_vec *bv;
- struct bio *bio;
char *buffer, *dma_buffer;
- int size, i;
+ int size;
+ struct req_iterator iter;
max_sector = transfer_size(ssize,
min(max_sector, max_sector_2),
@@ -2514,43 +2511,41 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
size = current_req->current_nr_sectors << 9;
- rq_for_each_bio(bio, current_req) {
- bio_for_each_segment(bv, bio, i) {
- if (!remaining)
- break;
+ rq_for_each_segment(bv, current_req, iter) {
+ if (!remaining)
+ break;
- size = bv->bv_len;
- SUPBOUND(size, remaining);
+ size = bv->bv_len;
+ SUPBOUND(size, remaining);
- buffer = page_address(bv->bv_page) + bv->bv_offset;
+ buffer = page_address(bv->bv_page) + bv->bv_offset;
#ifdef FLOPPY_SANITY_CHECK
- if (dma_buffer + size >
- floppy_track_buffer + (max_buffer_sectors << 10) ||
- dma_buffer < floppy_track_buffer) {
- DPRINT("buffer overrun in copy buffer %d\n",
- (int)((floppy_track_buffer -
- dma_buffer) >> 9));
- printk("fsector_t=%d buffer_min=%d\n",
- fsector_t, buffer_min);
- printk("current_count_sectors=%ld\n",
- current_count_sectors);
- if (CT(COMMAND) == FD_READ)
- printk("read\n");
- if (CT(COMMAND) == FD_WRITE)
- printk("write\n");
- break;
- }
- if (((unsigned long)buffer) % 512)
- DPRINT("%p buffer not aligned\n", buffer);
-#endif
+ if (dma_buffer + size >
+ floppy_track_buffer + (max_buffer_sectors << 10) ||
+ dma_buffer < floppy_track_buffer) {
+ DPRINT("buffer overrun in copy buffer %d\n",
+ (int)((floppy_track_buffer -
+ dma_buffer) >> 9));
+ printk("fsector_t=%d buffer_min=%d\n",
+ fsector_t, buffer_min);
+ printk("current_count_sectors=%ld\n",
+ current_count_sectors);
if (CT(COMMAND) == FD_READ)
- memcpy(buffer, dma_buffer, size);
- else
- memcpy(dma_buffer, buffer, size);
-
- remaining -= size;
- dma_buffer += size;
+ printk("read\n");
+ if (CT(COMMAND) == FD_WRITE)
+ printk("write\n");
+ break;
}
+ if (((unsigned long)buffer) % 512)
+ DPRINT("%p buffer not aligned\n", buffer);
+#endif
+ if (CT(COMMAND) == FD_READ)
+ memcpy(buffer, dma_buffer, size);
+ else
+ memcpy(dma_buffer, buffer, size);
+
+ remaining -= size;
+ dma_buffer += size;
}
#ifdef FLOPPY_SANITY_CHECK
if (remaining) {
@@ -3815,14 +3810,10 @@ static int check_floppy_change(struct gendisk *disk)
* a disk in the drive, and whether that disk is writable.
*/
-static int floppy_rb0_complete(struct bio *bio, unsigned int bytes_done,
+static void floppy_rb0_complete(struct bio *bio,
int err)
{
- if (bio->bi_size)
- return 1;
-
complete((struct completion *)bio->bi_private);
- return 0;
}
static int __floppy_read_block_0(struct block_device *bdev)
diff --git a/drivers/block/lguest_blk.c b/drivers/block/lguest_blk.c
index 160cf14431a..fa8e42341b8 100644
--- a/drivers/block/lguest_blk.c
+++ b/drivers/block/lguest_blk.c
@@ -142,25 +142,23 @@ static irqreturn_t lgb_irq(int irq, void *_bd)
* return the total length. */
static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma)
{
- unsigned int i = 0, idx, len = 0;
- struct bio *bio;
-
- rq_for_each_bio(bio, req) {
- struct bio_vec *bvec;
- bio_for_each_segment(bvec, bio, idx) {
- /* We told the block layer not to give us too many. */
- BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
- /* If we had a zero-length segment, it would look like
- * the end of the data referred to by the "struct
- * lguest_dma", so make sure that doesn't happen. */
- BUG_ON(!bvec->bv_len);
- /* Convert page & offset to a physical address */
- dma->addr[i] = page_to_phys(bvec->bv_page)
- + bvec->bv_offset;
- dma->len[i] = bvec->bv_len;
- len += bvec->bv_len;
- i++;
- }
+ unsigned int i = 0, len = 0;
+ struct req_iterator iter;
+ struct bio_vec *bvec;
+
+ rq_for_each_segment(bvec, req, iter) {
+ /* We told the block layer not to give us too many. */
+ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
+ /* If we had a zero-length segment, it would look like
+ * the end of the data referred to by the "struct
+ * lguest_dma", so make sure that doesn't happen. */
+ BUG_ON(!bvec->bv_len);
+ /* Convert page & offset to a physical address */
+ dma->addr[i] = page_to_phys(bvec->bv_page)
+ + bvec->bv_offset;
+ dma->len[i] = bvec->bv_len;
+ len += bvec->bv_len;
+ i++;
}
/* If the array isn't full, we mark the end with a 0 length */
if (i < LGUEST_MAX_DMA_SECTIONS)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 9f015fce413..b9233a06934 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -551,7 +551,7 @@ static int loop_make_request(struct request_queue *q, struct bio *old_bio)
out:
spin_unlock_irq(&lo->lo_lock);
- bio_io_error(old_bio, old_bio->bi_size);
+ bio_io_error(old_bio);
return 0;
}
@@ -580,7 +580,7 @@ static inline void loop_handle_bio(struct loop_device *lo, struct bio *bio)
bio_put(bio);
} else {
int ret = do_bio_filebacked(lo, bio);
- bio_endio(bio, bio->bi_size, ret);
+ bio_endio(bio, ret);
}
}
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index be92c658f06..be5ec3a9b1f 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -180,7 +180,7 @@ static inline int sock_send_bvec(struct socket *sock, struct bio_vec *bvec,
static int nbd_send_req(struct nbd_device *lo, struct request *req)
{
- int result, i, flags;
+ int result, flags;
struct nbd_request request;
unsigned long size = req->nr_sectors << 9;
struct socket *sock = lo->sock;
@@ -205,27 +205,23 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req)
}
if (nbd_cmd(req) == NBD_CMD_WRITE) {
- struct bio *bio;
+ struct req_iterator iter;
+ struct bio_vec *bvec;
/*
* we are really probing at internals to determine
* whether to set MSG_MORE or not...
*/
- rq_for_each_bio(bio, req) {
- struct bio_vec *bvec;
- bio_for_each_segment(bvec, bio, i) {
- flags = 0;
- if ((i < (bio->bi_vcnt - 1)) || bio->bi_next)
- flags = MSG_MORE;
- dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n",
- lo->disk->disk_name, req,
- bvec->bv_len);
- result = sock_send_bvec(sock, bvec, flags);
- if (result <= 0) {
- printk(KERN_ERR "%s: Send data failed (result %d)\n",
- lo->disk->disk_name,
- result);
- goto error_out;
- }
+ rq_for_each_segment(bvec, req, iter) {
+ flags = 0;
+ if (!rq_iter_last(req, iter))
+ flags = MSG_MORE;
+ dprintk(DBG_TX, "%s: request %p: sending %d bytes data\n",
+ lo->disk->disk_name, req, bvec->bv_len);
+ result = sock_send_bvec(sock, bvec, flags);
+ if (result <= 0) {
+ printk(KERN_ERR "%s: Send data failed (result %d)\n",
+ lo->disk->disk_name, result);
+ goto error_out;
}
}
}
@@ -321,22 +317,19 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
dprintk(DBG_RX, "%s: request %p: got reply\n",
lo->disk->disk_name, req);
if (nbd_cmd(req) == NBD_CMD_READ) {
- int i;
- struct bio *bio;
- rq_for_each_bio(bio, req) {
- struct bio_vec *bvec;
- bio_for_each_segment(bvec, bio, i) {
- result = sock_recv_bvec(sock, bvec);
- if (result <= 0) {
- printk(KERN_ERR "%s: Receive data failed (result %d)\n",
- lo->disk->disk_name,
- result);
- req->errors++;
- return req;
- }
- dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
- lo->disk->disk_name, req, bvec->bv_len);
+ struct req_iterator iter;
+ struct bio_vec *bvec;
+
+ rq_for_each_segment(bvec, req, iter) {
+ result = sock_recv_bvec(sock, bvec);
+ if (result <= 0) {
+ printk(KERN_ERR "%s: Receive data failed (result %d)\n",
+ lo->disk->disk_name, result);
+ req->errors++;
+ return req;
}
+ dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
+ lo->disk->disk_name, req, bvec->bv_len);
}
}
return req;
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index fadbfd880ba..540bf367698 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1058,15 +1058,12 @@ static void pkt_make_local_copy(struct packet_data *pkt, struct bio_vec *bvec)
}
}
-static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_read(struct bio *bio, int err)
{
struct packet_data *pkt = bio->bi_private;
struct pktcdvd_device *pd = pkt->pd;
BUG_ON(!pd);
- if (bio->bi_size)
- return 1;
-
VPRINTK("pkt_end_io_read: bio=%p sec0=%llx sec=%llx err=%d\n", bio,
(unsigned long long)pkt->sector, (unsigned long long)bio->bi_sector, err);
@@ -1077,19 +1074,14 @@ static int pkt_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
wake_up(&pd->wqueue);
}
pkt_bio_finished(pd);
-
- return 0;
}
-static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_packet_write(struct bio *bio, int err)
{
struct packet_data *pkt = bio->bi_private;
struct pktcdvd_device *pd = pkt->pd;
BUG_ON(!pd);
- if (bio->bi_size)
- return 1;
-
VPRINTK("pkt_end_io_packet_write: id=%d, err=%d\n", pkt->id, err);
pd->stats.pkt_ended++;
@@ -1098,7 +1090,6 @@ static int pkt_end_io_packet_write(struct bio *bio, unsigned int bytes_done, int
atomic_dec(&pkt->io_wait);
atomic_inc(&pkt->run_sm);
wake_up(&pd->wqueue);
- return 0;
}
/*
@@ -1470,7 +1461,7 @@ static void pkt_finish_packet(struct packet_data *pkt, int uptodate)
while (bio) {
next = bio->bi_next;
bio->bi_next = NULL;
- bio_endio(bio, bio->bi_size, uptodate ? 0 : -EIO);
+ bio_endio(bio, uptodate ? 0 : -EIO);
bio = next;
}
pkt->orig_bios = pkt->orig_bios_tail = NULL;
@@ -2462,19 +2453,15 @@ static int pkt_close(struct inode *inode, struct file *file)
}
-static int pkt_end_io_read_cloned(struct bio *bio, unsigned int bytes_done, int err)
+static void pkt_end_io_read_cloned(struct bio *bio, int err)
{
struct packet_stacked_data *psd = bio->bi_private;
struct pktcdvd_device *pd = psd->pd;
- if (bio->bi_size)
- return 1;
-
bio_put(bio);
- bio_endio(psd->bio, psd->bio->bi_size, err);
+ bio_endio(psd->bio, err);
mempool_free(psd, psd_pool);
pkt_bio_finished(pd);
- return 0;
}
static int pkt_make_request(struct request_queue *q, struct bio *bio)
@@ -2620,7 +2607,7 @@ static int pkt_make_request(struct request_queue *q, struct bio *bio)
}
return 0;
end_io:
- bio_io_error(bio, bio->bi_size);
+ bio_io_error(bio);
return 0;
}
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index aa8b890c80d..06d0552cf49 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -91,30 +91,29 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
struct request *req, int gather)
{
unsigned int offset = 0;
- struct bio *bio;
- sector_t sector;
+ struct req_iterator iter;
struct bio_vec *bvec;
- unsigned int i = 0, j;
+ unsigned int i = 0;
size_t size;
void *buf;
- rq_for_each_bio(bio, req) {
- sector = bio->bi_sector;
+ rq_for_each_segment(bvec, req, iter) {
+ unsigned long flags;
dev_dbg(&dev->sbd.core,
"%s:%u: bio %u: %u segs %u sectors from %lu\n",
- __func__, __LINE__, i, bio_segments(bio),
- bio_sectors(bio), sector);
- bio_for_each_segment(bvec, bio, j) {
- size = bvec->bv_len;
- buf = __bio_kmap_atomic(bio, j, KM_IRQ0);
- if (gather)
- memcpy(dev->bounce_buf+offset, buf, size);
- else
- memcpy(buf, dev->bounce_buf+offset, size);
- offset += size;
- flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page);
- __bio_kunmap_atomic(bio, KM_IRQ0);
- }
+ __func__, __LINE__, i, bio_segments(iter.bio),
+ bio_sectors(iter.bio),
+ (unsigned long)iter.bio->bi_sector);
+
+ size = bvec->bv_len;
+ buf = bvec_kmap_irq(bvec, &flags);
+ if (gather)
+ memcpy(dev->bounce_buf+offset, buf, size);
+ else
+ memcpy(buf, dev->bounce_buf+offset, size);
+ offset += size;
+ flush_kernel_dcache_page(bvec->bv_page);
+ bvec_kunmap_irq(bvec, &flags);
i++;
}
}
@@ -130,12 +129,13 @@ static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
#ifdef DEBUG
unsigned int n = 0;
- struct bio *bio;
+ struct bio_vec *bv;
+ struct req_iterator iter;
- rq_for_each_bio(bio, req)
+ rq_for_each_segment(bv, req, iter)
n++;
dev_dbg(&dev->sbd.core,
- "%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n",
+ "%s:%u: %s req has %u bvecs for %lu sectors %lu hard sectors\n",
__func__, __LINE__, op, n, req->nr_sectors,
req->hard_nr_sectors);
#endif
diff --git a/drivers/block/rd.c b/drivers/block/rd.c
index 65150b548f3..701ea77f62e 100644
--- a/drivers/block/rd.c
+++ b/drivers/block/rd.c
@@ -287,10 +287,10 @@ static int rd_make_request(struct request_queue *q, struct bio *bio)
if (ret)
goto fail;
- bio_endio(bio, bio->bi_size, 0);
+ bio_endio(bio, 0);
return 0;
fail:
- bio_io_error(bio, bio->bi_size);
+ bio_io_error(bio);
return 0;
}
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 6b7c02d6360..99806f9ee4c 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -52,7 +52,7 @@
#include <linux/fcntl.h> /* O_ACCMODE */
#include <linux/hdreg.h> /* HDIO_GETGEO */
-#include <linux/umem.h>
+#include "umem.h"
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -67,9 +67,10 @@
* Version Information
*/
-#define DRIVER_VERSION "v2.3"
-#define DRIVER_AUTHOR "San Mehat, Johannes Erdfelt, NeilBrown"
-#define DRIVER_DESC "Micro Memory(tm) PCI memory board block driver"
+#define DRIVER_NAME "umem"
+#define DRIVER_VERSION "v2.3"
+#define DRIVER_AUTHOR "San Mehat, Johannes Erdfelt, NeilBrown"
+#define DRIVER_DESC "Micro Memory(tm) PCI memory board block driver"
static int debug;
/* #define HW_TRACE(x) writeb(x,cards[0].csr_remap + MEMCTRLSTATUS_MAGIC) */
@@ -97,15 +98,9 @@ static int major_nr;
#include <linux/blkpg.h>
struct cardinfo {
- int card_number;
struct pci_dev *dev;
- int irq;
-
- unsigned long csr_base;
unsigned char __iomem *csr_remap;
- unsigned long csr_len;
- unsigned int win_size; /* PCI window size */
unsigned int mm_size; /* size in kbytes */
unsigned int init_size; /* initial segment, in sectors,
@@ -113,6 +108,8 @@ struct cardinfo {
* have been written
*/
struct bio *bio, *currentbio, **biotail;
+ int current_idx;
+ sector_t current_sector;
struct request_queue *queue;
@@ -121,6 +118,7 @@ struct cardinfo {
struct mm_dma_desc *desc;
int cnt, headcnt;
struct bio *bio, **biotail;
+ int idx;
} mm_pages[2];
#define DESC_PER_PAGE ((PAGE_SIZE*2)/sizeof(struct mm_dma_desc))
@@ -233,7 +231,7 @@ static void dump_regs(struct cardinfo *card)
*/
static void dump_dmastat(struct cardinfo *card, unsigned int dmastat)
{
- printk(KERN_DEBUG "MM%d*: DMAstat - ", card->card_number);
+ dev_printk(KERN_DEBUG, &card->dev->dev, "DMAstat - ");
if (dmastat & DMASCR_ANY_ERR)
printk("ANY_ERR ");
if (dmastat & DMASCR_MBE_ERR)
@@ -295,7 +293,7 @@ static void mm_start_io(struct cardinfo *card)
desc->control_bits &= ~cpu_to_le32(DMASCR_CHAIN_EN);
desc->sem_control_bits = desc->control_bits;
-
+
if (debug & DEBUG_LED_ON_TRANSFER)
set_led(card, LED_REMOVE, LED_ON);
@@ -329,7 +327,7 @@ static int add_bio(struct cardinfo *card);
static void activate(struct cardinfo *card)
{
- /* if No page is Active, and Ready is
+ /* if No page is Active, and Ready is
* not empty, then switch Ready page
* to active and start IO.
* Then add any bh's that are available to Ready
@@ -368,7 +366,7 @@ static void mm_unplug_device(struct request_queue *q)
spin_unlock_irqrestore(&card->lock, flags);
}
-/*
+/*
* If there is room on Ready page, take
* one bh off list and add it.
* return 1 if there was room, else 0.
@@ -380,12 +378,16 @@ static int add_bio(struct cardinfo *card)
dma_addr_t dma_handle;
int offset;
struct bio *bio;
+ struct bio_vec *vec;
+ int idx;
int rw;
int len;
bio = card->currentbio;
if (!bio && card->bio) {
card->currentbio = card->bio;
+ card->current_idx = card->bio->bi_idx;
+ card->current_sector = card->bio->bi_sector;
card->bio = card->bio->bi_next;
if (card->bio == NULL)
card->biotail = &card->bio;
@@ -394,15 +396,17 @@ static int add_bio(struct cardinfo *card)
}
if (!bio)
return 0;
+ idx = card->current_idx;
rw = bio_rw(bio);
if (card->mm_pages[card->Ready].cnt >= DESC_PER_PAGE)
return 0;
- len = bio_iovec(bio)->bv_len;
- dma_handle = pci_map_page(card->dev,
- bio_page(bio),
- bio_offset(bio),
+ vec = bio_iovec_idx(bio, idx);
+ len = vec->bv_len;
+ dma_handle = pci_map_page(card->dev,
+ vec->bv_page,
+ vec->bv_offset,
len,
(rw==READ) ?
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
@@ -410,6 +414,8 @@ static int add_bio(struct cardinfo *card)
p = &card->mm_pages[card->Ready];
desc = &p->desc[p->cnt];
p->cnt++;
+ if (p->bio == NULL)
+ p->idx = idx;
if ((p->biotail) != &bio->bi_next) {
*(p->biotail) = bio;
p->biotail = &(bio->bi_next);
@@ -419,7 +425,7 @@ static int add_bio(struct cardinfo *card)
desc->data_dma_handle = dma_handle;
desc->pci_addr = cpu_to_le64((u64)desc->data_dma_handle);
- desc->local_addr= cpu_to_le64(bio->bi_sector << 9);
+ desc->local_addr = cpu_to_le64(card->current_sector << 9);
desc->transfer_size = cpu_to_le32(len);
offset = ( ((char*)&desc->sem_control_bits) - ((char*)p->desc));
desc->sem_addr = cpu_to_le64((u64)(p->page_dma+offset));
@@ -435,10 +441,10 @@ static int add_bio(struct cardinfo *card)
desc->control_bits |= cpu_to_le32(DMASCR_TRANSFER_READ);
desc->sem_control_bits = desc->control_bits;
- bio->bi_sector += (len>>9);
- bio->bi_size -= len;
- bio->bi_idx++;
- if (bio->bi_idx >= bio->bi_vcnt)
+ card->current_sector += (len >> 9);
+ idx++;
+ card->current_idx = idx;
+ if (idx >= bio->bi_vcnt)
card->currentbio = NULL;
return 1;
@@ -461,7 +467,7 @@ static void process_page(unsigned long data)
if (card->Active < 0)
goto out_unlock;
page = &card->mm_pages[card->Active];
-
+
while (page->headcnt < page->cnt) {
struct bio *bio = page->bio;
struct mm_dma_desc *desc = &page->desc[page->headcnt];
@@ -471,32 +477,34 @@ static void process_page(unsigned long data)
if (!(control & DMASCR_DMA_COMPLETE)) {
control = dma_status;
- last=1;
+ last=1;
}
page->headcnt++;
- idx = bio->bi_phys_segments;
- bio->bi_phys_segments++;
- if (bio->bi_phys_segments >= bio->bi_vcnt)
+ idx = page->idx;
+ page->idx++;
+ if (page->idx >= bio->bi_vcnt) {
page->bio = bio->bi_next;
+ page->idx = page->bio->bi_idx;
+ }
- pci_unmap_page(card->dev, desc->data_dma_handle,
+ pci_unmap_page(card->dev, desc->data_dma_handle,
bio_iovec_idx(bio,idx)->bv_len,
(control& DMASCR_TRANSFER_READ) ?
PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
if (control & DMASCR_HARD_ERROR) {
/* error */
clear_bit(BIO_UPTODATE, &bio->bi_flags);
- printk(KERN_WARNING "MM%d: I/O error on sector %d/%d\n",
- card->card_number,
- le32_to_cpu(desc->local_addr)>>9,
- le32_to_cpu(desc->transfer_size));
+ dev_printk(KERN_WARNING, &card->dev->dev,
+ "I/O error on sector %d/%d\n",
+ le32_to_cpu(desc->local_addr)>>9,
+ le32_to_cpu(desc->transfer_size));
dump_dmastat(card, control);
} else if (test_bit(BIO_RW, &bio->bi_rw) &&
le32_to_cpu(desc->local_addr)>>9 == card->init_size) {
card->init_size += le32_to_cpu(desc->transfer_size)>>9;
if (card->init_size>>1 >= card->mm_size) {
- printk(KERN_INFO "MM%d: memory now initialised\n",
- card->card_number);
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "memory now initialised\n");
set_userbit(card, MEMORY_INITIALIZED, 1);
}
}
@@ -532,7 +540,7 @@ static void process_page(unsigned long data)
return_bio = bio->bi_next;
bio->bi_next = NULL;
- bio_endio(bio, bio->bi_size, 0);
+ bio_endio(bio, 0);
}
}
@@ -547,7 +555,6 @@ static int mm_make_request(struct request_queue *q, struct bio *bio)
pr_debug("mm_make_request %llu %u\n",
(unsigned long long)bio->bi_sector, bio->bi_size);
- bio->bi_phys_segments = bio->bi_idx; /* count of completed segments*/
spin_lock_irq(&card->lock);
*card->biotail = bio;
bio->bi_next = NULL;
@@ -585,7 +592,7 @@ HW_TRACE(0x30);
else
writeb((DMASCR_DMA_COMPLETE|DMASCR_CHAIN_COMPLETE) >> 16,
card->csr_remap+ DMA_STATUS_CTRL + 2);
-
+
/* log errors and clear interrupt status */
if (dma_status & DMASCR_ANY_ERR) {
unsigned int data_log1, data_log2;
@@ -606,46 +613,51 @@ HW_TRACE(0x30);
dump_dmastat(card, dma_status);
if (stat & 0x01)
- printk(KERN_ERR "MM%d*: Memory access error detected (err count %d)\n",
- card->card_number, count);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Memory access error detected (err count %d)\n",
+ count);
if (stat & 0x02)
- printk(KERN_ERR "MM%d*: Multi-bit EDC error\n",
- card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Multi-bit EDC error\n");
- printk(KERN_ERR "MM%d*: Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n",
- card->card_number, addr_log2, addr_log1, data_log2, data_log1);
- printk(KERN_ERR "MM%d*: Fault Check 0x%02x, Fault Syndrome 0x%02x\n",
- card->card_number, check, syndrome);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Fault Address 0x%02x%08x, Fault Data 0x%08x%08x\n",
+ addr_log2, addr_log1, data_log2, data_log1);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Fault Check 0x%02x, Fault Syndrome 0x%02x\n",
+ check, syndrome);
writeb(0, card->csr_remap + ERROR_COUNT);
}
if (dma_status & DMASCR_PARITY_ERR_REP) {
- printk(KERN_ERR "MM%d*: PARITY ERROR REPORTED\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "PARITY ERROR REPORTED\n");
pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
}
if (dma_status & DMASCR_PARITY_ERR_DET) {
- printk(KERN_ERR "MM%d*: PARITY ERROR DETECTED\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "PARITY ERROR DETECTED\n");
pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
}
if (dma_status & DMASCR_SYSTEM_ERR_SIG) {
- printk(KERN_ERR "MM%d*: SYSTEM ERROR\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev, "SYSTEM ERROR\n");
pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
}
if (dma_status & DMASCR_TARGET_ABT) {
- printk(KERN_ERR "MM%d*: TARGET ABORT\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev, "TARGET ABORT\n");
pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
}
if (dma_status & DMASCR_MASTER_ABT) {
- printk(KERN_ERR "MM%d*: MASTER ABORT\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev, "MASTER ABORT\n");
pci_read_config_word(card->dev, PCI_STATUS, &cfg_status);
pci_write_config_word(card->dev, PCI_STATUS, cfg_status);
}
@@ -656,7 +668,7 @@ HW_TRACE(0x30);
HW_TRACE(0x36);
- return IRQ_HANDLED;
+ return IRQ_HANDLED;
}
/*
-----------------------------------------------------------------------------------
@@ -696,20 +708,20 @@ static int check_battery(struct cardinfo *card, int battery, int status)
card->battery[battery].last_change = jiffies;
if (card->battery[battery].good) {
- printk(KERN_ERR "MM%d: Battery %d now good\n",
- card->card_number, battery + 1);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Battery %d now good\n", battery + 1);
card->battery[battery].warned = 0;
} else
- printk(KERN_ERR "MM%d: Battery %d now FAILED\n",
- card->card_number, battery + 1);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Battery %d now FAILED\n", battery + 1);
return 1;
} else if (!card->battery[battery].good &&
!card->battery[battery].warned &&
time_after_eq(jiffies, card->battery[battery].last_change +
(HZ * 60 * 60 * 5))) {
- printk(KERN_ERR "MM%d: Battery %d still FAILED after 5 hours\n",
- card->card_number, battery + 1);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Battery %d still FAILED after 5 hours\n", battery + 1);
card->battery[battery].warned = 1;
return 1;
@@ -733,8 +745,8 @@ static void check_batteries(struct cardinfo *card)
status = readb(card->csr_remap + MEMCTRLSTATUS_BATTERY);
if (debug & DEBUG_BATTERY_POLLING)
- printk(KERN_DEBUG "MM%d: checking battery status, 1 = %s, 2 = %s\n",
- card->card_number,
+ dev_printk(KERN_DEBUG, &card->dev->dev,
+ "checking battery status, 1 = %s, 2 = %s\n",
(status & BATTERY_1_FAILURE) ? "FAILURE" : "OK",
(status & BATTERY_2_FAILURE) ? "FAILURE" : "OK");
@@ -749,7 +761,7 @@ static void check_all_batteries(unsigned long ptr)
{
int i;
- for (i = 0; i < num_cards; i++)
+ for (i = 0; i < num_cards; i++)
if (!(cards[i].flags & UM_FLAG_NO_BATT)) {
struct cardinfo *card = &cards[i];
spin_lock_bh(&card->lock);
@@ -853,45 +865,56 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
unsigned char mem_present;
unsigned char batt_status;
unsigned int saved_bar, data;
+ unsigned long csr_base;
+ unsigned long csr_len;
int magic_number;
+ static int printed_version;
- if (pci_enable_device(dev) < 0)
- return -ENODEV;
+ if (!printed_version++)
+ printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n");
+
+ ret = pci_enable_device(dev);
+ if (ret)
+ return ret;
pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF8);
pci_set_master(dev);
card->dev = dev;
- card->card_number = num_cards;
- card->csr_base = pci_resource_start(dev, 0);
- card->csr_len = pci_resource_len(dev, 0);
+ csr_base = pci_resource_start(dev, 0);
+ csr_len = pci_resource_len(dev, 0);
+ if (!csr_base || !csr_len)
+ return -ENODEV;
- printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n",
- card->card_number, dev->bus->number, dev->devfn);
+ dev_printk(KERN_INFO, &dev->dev,
+ "Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n");
if (pci_set_dma_mask(dev, DMA_64BIT_MASK) &&
pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
- printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards);
+ dev_printk(KERN_WARNING, &dev->dev, "NO suitable DMA found\n");
return -ENOMEM;
}
- if (!request_mem_region(card->csr_base, card->csr_len, "Micro Memory")) {
- printk(KERN_ERR "MM%d: Unable to request memory region\n", card->card_number);
- ret = -ENOMEM;
+ ret = pci_request_regions(dev, DRIVER_NAME);
+ if (ret) {
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Unable to request memory region\n");
goto failed_req_csr;
}
- card->csr_remap = ioremap_nocache(card->csr_base, card->csr_len);
+ card->csr_remap = ioremap_nocache(csr_base, csr_len);
if (!card->csr_remap) {
- printk(KERN_ERR "MM%d: Unable to remap memory region\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Unable to remap memory region\n");
ret = -ENOMEM;
goto failed_remap_csr;
}
- printk(KERN_INFO "MM%d: CSR 0x%08lx -> 0x%p (0x%lx)\n", card->card_number,
- card->csr_base, card->csr_remap, card->csr_len);
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "CSR 0x%08lx -> 0x%p (0x%lx)\n",
+ csr_base, card->csr_remap, csr_len);
switch(card->dev->device) {
case 0x5415:
@@ -915,7 +938,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
}
if (readb(card->csr_remap + MEMCTRLSTATUS_MAGIC) != magic_number) {
- printk(KERN_ERR "MM%d: Magic number invalid\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev, "Magic number invalid\n");
ret = -ENOMEM;
goto failed_magic;
}
@@ -928,7 +951,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
&card->mm_pages[1].page_dma);
if (card->mm_pages[0].desc == NULL ||
card->mm_pages[1].desc == NULL) {
- printk(KERN_ERR "MM%d: alloc failed\n", card->card_number);
+ dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n");
goto failed_alloc;
}
reset_page(&card->mm_pages[0]);
@@ -949,7 +972,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
tasklet_init(&card->tasklet, process_page, (unsigned long)card);
card->check_batteries = 0;
-
+
mem_present = readb(card->csr_remap + MEMCTRLSTATUS_MEMORY);
switch (mem_present) {
case MEM_128_MB:
@@ -982,12 +1005,13 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
card->battery[1].good = !(batt_status & BATTERY_2_FAILURE);
card->battery[0].last_change = card->battery[1].last_change = jiffies;
- if (card->flags & UM_FLAG_NO_BATT)
- printk(KERN_INFO "MM%d: Size %d KB\n",
- card->card_number, card->mm_size);
+ if (card->flags & UM_FLAG_NO_BATT)
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "Size %d KB\n", card->mm_size);
else {
- printk(KERN_INFO "MM%d: Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n",
- card->card_number, card->mm_size,
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n",
+ card->mm_size,
(batt_status & BATTERY_1_DISABLED ? "Disabled" : "Enabled"),
card->battery[0].good ? "OK" : "FAILURE",
(batt_status & BATTERY_2_DISABLED ? "Disabled" : "Enabled"),
@@ -1005,19 +1029,16 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
data = ~data;
data += 1;
- card->win_size = data;
-
-
- if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, "pci-umem", card)) {
- printk(KERN_ERR "MM%d: Unable to allocate IRQ\n", card->card_number);
+ if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, DRIVER_NAME, card)) {
+ dev_printk(KERN_ERR, &card->dev->dev,
+ "Unable to allocate IRQ\n");
ret = -ENODEV;
goto failed_req_irq;
}
- card->irq = dev->irq;
- printk(KERN_INFO "MM%d: Window size %d bytes, IRQ %d\n", card->card_number,
- card->win_size, card->irq);
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "Window size %d bytes, IRQ %d\n", data, dev->irq);
spin_lock_init(&card->lock);
@@ -1037,10 +1058,12 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
num_cards++;
if (!get_userbit(card, MEMORY_INITIALIZED)) {
- printk(KERN_INFO "MM%d: memory NOT initialized. Consider over-writing whole device.\n", card->card_number);
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "memory NOT initialized. Consider over-writing whole device.\n");
card->init_size = 0;
} else {
- printk(KERN_INFO "MM%d: memory already initialized\n", card->card_number);
+ dev_printk(KERN_INFO, &card->dev->dev,
+ "memory already initialized\n");
card->init_size = card->mm_size;
}
@@ -1062,7 +1085,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
failed_magic:
iounmap(card->csr_remap);
failed_remap_csr:
- release_mem_region(card->csr_base, card->csr_len);
+ pci_release_regions(dev);
failed_req_csr:
return ret;
@@ -1077,9 +1100,8 @@ static void mm_pci_remove(struct pci_dev *dev)
struct cardinfo *card = pci_get_drvdata(dev);
tasklet_kill(&card->tasklet);
+ free_irq(dev->irq, card);
iounmap(card->csr_remap);
- release_mem_region(card->csr_base, card->csr_len);
- free_irq(card->irq, card);
if (card->mm_pages[0].desc)
pci_free_consistent(card->dev, PAGE_SIZE*2,
@@ -1090,6 +1112,9 @@ static void mm_pci_remove(struct pci_dev *dev)
card->mm_pages[1].desc,
card->mm_pages[1].page_dma);
blk_cleanup_queue(card->queue);
+
+ pci_release_regions(dev);
+ pci_disable_device(dev);
}
static const struct pci_device_id mm_pci_ids[] = {
@@ -1109,11 +1134,12 @@ static const struct pci_device_id mm_pci_ids[] = {
MODULE_DEVICE_TABLE(pci, mm_pci_ids);
static struct pci_driver mm_pci_driver = {
- .name = "umem",
- .id_table = mm_pci_ids,
- .probe = mm_pci_probe,
- .remove = mm_pci_remove,
+ .name = DRIVER_NAME,
+ .id_table = mm_pci_ids,
+ .probe = mm_pci_probe,
+ .remove = mm_pci_remove,
};
+
/*
-----------------------------------------------------------------------------------
-- mm_init
@@ -1125,13 +1151,11 @@ static int __init mm_init(void)
int retval, i;
int err;
- printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n");
-
retval = pci_register_driver(&mm_pci_driver);
if (retval)
return -ENOMEM;
- err = major_nr = register_blkdev(0, "umem");
+ err = major_nr = register_blkdev(0, DRIVER_NAME);
if (err < 0) {
pci_unregister_driver(&mm_pci_driver);
return -EIO;
@@ -1157,13 +1181,13 @@ static int __init mm_init(void)
}
init_battery_timer();
- printk("MM: desc_per_page = %ld\n", DESC_PER_PAGE);
+ printk(KERN_INFO "MM: desc_per_page = %ld\n", DESC_PER_PAGE);
/* printk("mm_init: Done. 10-19-01 9:00\n"); */
return 0;
out:
pci_unregister_driver(&mm_pci_driver);
- unregister_blkdev(major_nr, "umem");
+ unregister_blkdev(major_nr, DRIVER_NAME);
while (i--)
put_disk(mm_gendisk[i]);
return -ENOMEM;
@@ -1186,7 +1210,7 @@ static void __exit mm_cleanup(void)
pci_unregister_driver(&mm_pci_driver);
- unregister_blkdev(major_nr, "umem");
+ unregister_blkdev(major_nr, DRIVER_NAME);
}
module_init(mm_init);
diff --git a/drivers/block/umem.h b/drivers/block/umem.h
new file mode 100644
index 00000000000..375c68974c9
--- /dev/null
+++ b/drivers/block/umem.h
@@ -0,0 +1,133 @@
+
+/*
+ * This file contains defines for the
+ * Micro Memory MM5415
+ * family PCI Memory Module with Battery Backup.
+ *
+ * Copyright Micro Memory INC 2001. All rights reserved.
+ * Release under the terms of the GNU GENERAL PUBLIC LICENSE version 2.
+ * See the file COPYING.
+ */
+
+#ifndef _DRIVERS_BLOCK_MM_H
+#define _DRIVERS_BLOCK_MM_H
+
+
+#define IRQ_TIMEOUT (1 * HZ)
+
+/* CSR register definition */
+#define MEMCTRLSTATUS_MAGIC 0x00
+#define MM_MAGIC_VALUE (unsigned char)0x59
+
+#define MEMCTRLSTATUS_BATTERY 0x04
+#define BATTERY_1_DISABLED 0x01
+#define BATTERY_1_FAILURE 0x02
+#define BATTERY_2_DISABLED 0x04
+#define BATTERY_2_FAILURE 0x08
+
+#define MEMCTRLSTATUS_MEMORY 0x07
+#define MEM_128_MB 0xfe
+#define MEM_256_MB 0xfc
+#define MEM_512_MB 0xf8
+#define MEM_1_GB 0xf0
+#define MEM_2_GB 0xe0
+
+#define MEMCTRLCMD_LEDCTRL 0x08
+#define LED_REMOVE 2
+#define LED_FAULT 4
+#define LED_POWER 6
+#define LED_FLIP 255
+#define LED_OFF 0x00
+#define LED_ON 0x01
+#define LED_FLASH_3_5 0x02
+#define LED_FLASH_7_0 0x03
+#define LED_POWER_ON 0x00
+#define LED_POWER_OFF 0x01
+#define USER_BIT1 0x01
+#define USER_BIT2 0x02
+
+#define MEMORY_INITIALIZED USER_BIT1
+
+#define MEMCTRLCMD_ERRCTRL 0x0C
+#define EDC_NONE_DEFAULT 0x00
+#define EDC_NONE 0x01
+#define EDC_STORE_READ 0x02
+#define EDC_STORE_CORRECT 0x03
+
+#define MEMCTRLCMD_ERRCNT 0x0D
+#define MEMCTRLCMD_ERRSTATUS 0x0E
+
+#define ERROR_DATA_LOG 0x20
+#define ERROR_ADDR_LOG 0x28
+#define ERROR_COUNT 0x3D
+#define ERROR_SYNDROME 0x3E
+#define ERROR_CHECK 0x3F
+
+#define DMA_PCI_ADDR 0x40
+#define DMA_LOCAL_ADDR 0x48
+#define DMA_TRANSFER_SIZE 0x50
+#define DMA_DESCRIPTOR_ADDR 0x58
+#define DMA_SEMAPHORE_ADDR 0x60
+#define DMA_STATUS_CTRL 0x68
+#define DMASCR_GO 0x00001
+#define DMASCR_TRANSFER_READ 0x00002
+#define DMASCR_CHAIN_EN 0x00004
+#define DMASCR_SEM_EN 0x00010
+#define DMASCR_DMA_COMP_EN 0x00020
+#define DMASCR_CHAIN_COMP_EN 0x00040
+#define DMASCR_ERR_INT_EN 0x00080
+#define DMASCR_PARITY_INT_EN 0x00100
+#define DMASCR_ANY_ERR 0x00800
+#define DMASCR_MBE_ERR 0x01000
+#define DMASCR_PARITY_ERR_REP 0x02000
+#define DMASCR_PARITY_ERR_DET 0x04000
+#define DMASCR_SYSTEM_ERR_SIG 0x08000
+#define DMASCR_TARGET_ABT 0x10000
+#define DMASCR_MASTER_ABT 0x20000
+#define DMASCR_DMA_COMPLETE 0x40000
+#define DMASCR_CHAIN_COMPLETE 0x80000
+
+/*
+3.SOME PCs HAVE HOST BRIDGES WHICH APPARENTLY DO NOT CORRECTLY HANDLE
+READ-LINE (0xE) OR READ-MULTIPLE (0xC) PCI COMMAND CODES DURING DMA
+TRANSFERS. IN OTHER SYSTEMS THESE COMMAND CODES WILL CAUSE THE HOST BRIDGE
+TO ALLOW LONGER BURSTS DURING DMA READ OPERATIONS. THE UPPER FOUR BITS
+(31..28) OF THE DMA CSR HAVE BEEN MADE PROGRAMMABLE, SO THAT EITHER A 0x6,
+AN 0xE OR A 0xC CAN BE WRITTEN TO THEM TO SET THE COMMAND CODE USED DURING
+DMA READ OPERATIONS.
+*/
+#define DMASCR_READ 0x60000000
+#define DMASCR_READLINE 0xE0000000
+#define DMASCR_READMULTI 0xC0000000
+
+
+#define DMASCR_ERROR_MASK (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR | DMASCR_ANY_ERR)
+#define DMASCR_HARD_ERROR (DMASCR_MASTER_ABT | DMASCR_TARGET_ABT | DMASCR_SYSTEM_ERR_SIG | DMASCR_PARITY_ERR_DET | DMASCR_MBE_ERR)
+
+#define WINDOWMAP_WINNUM 0x7B
+
+#define DMA_READ_FROM_HOST 0
+#define DMA_WRITE_TO_HOST 1
+
+struct mm_dma_desc {
+ __le64 pci_addr;
+ __le64 local_addr;
+ __le32 transfer_size;
+ u32 zero1;
+ __le64 next_desc_addr;
+ __le64 sem_addr;
+ __le32 control_bits;
+ u32 zero2;
+
+ dma_addr_t data_dma_handle;
+
+ /* Copy of the bits */
+ __le64 sem_control_bits;
+} __attribute__((aligned(8)));
+
+/* bits for card->flags */
+#define UM_FLAG_DMA_IN_REGS 1
+#define UM_FLAG_NO_BYTE_STATUS 2
+#define UM_FLAG_NO_BATTREG 4
+#define UM_FLAG_NO_BATT 8
+#endif
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 964e51634f2..2bdebcb3ff1 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -150,9 +150,8 @@ static int blkif_queue_request(struct request *req)
struct blkfront_info *info = req->rq_disk->private_data;
unsigned long buffer_mfn;
struct blkif_request *ring_req;
- struct bio *bio;
+ struct req_iterator iter;
struct bio_vec *bvec;
- int idx;
unsigned long id;
unsigned int fsect, lsect;
int ref;
@@ -186,34 +185,31 @@ static int blkif_queue_request(struct request *req)
ring_req->operation = BLKIF_OP_WRITE_BARRIER;
ring_req->nr_segments = 0;
- rq_for_each_bio (bio, req) {
- bio_for_each_segment (bvec, bio, idx) {
- BUG_ON(ring_req->nr_segments
- == BLKIF_MAX_SEGMENTS_PER_REQUEST);
- buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page));
- fsect = bvec->bv_offset >> 9;
- lsect = fsect + (bvec->bv_len >> 9) - 1;
- /* install a grant reference. */
- ref = gnttab_claim_grant_reference(&gref_head);
- BUG_ON(ref == -ENOSPC);
-
- gnttab_grant_foreign_access_ref(
+ rq_for_each_segment(bvec, req, iter) {
+ BUG_ON(ring_req->nr_segments == BLKIF_MAX_SEGMENTS_PER_REQUEST);
+ buffer_mfn = pfn_to_mfn(page_to_pfn(bvec->bv_page));
+ fsect = bvec->bv_offset >> 9;
+ lsect = fsect + (bvec->bv_len >> 9) - 1;
+ /* install a grant reference. */
+ ref = gnttab_claim_grant_reference(&gref_head);
+ BUG_ON(ref == -ENOSPC);
+
+ gnttab_grant_foreign_access_ref(
ref,
info->xbdev->otherend_id,
buffer_mfn,
rq_data_dir(req) );
- info->shadow[id].frame[ring_req->nr_segments] =
+ info->shadow[id].frame[ring_req->nr_segments] =
mfn_to_pfn(buffer_mfn);
- ring_req->seg[ring_req->nr_segments] =
+ ring_req->seg[ring_req->nr_segments] =
(struct blkif_request_segment) {
.gref = ref,
.first_sect = fsect,
.last_sect = lsect };
- ring_req->nr_segments++;
- }
+ ring_req->nr_segments++;
}
info->ring.req_prod_pvt++;
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 3ede0b63da1..9e7652dcde6 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -91,6 +91,10 @@
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/platform_device.h>
+#if defined(CONFIG_OF)
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#endif
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_DESCRIPTION("Xilinx SystemACE device driver");
@@ -158,6 +162,9 @@ MODULE_LICENSE("GPL");
#define ACE_FIFO_SIZE (32)
#define ACE_BUF_PER_SECTOR (ACE_SECTOR_SIZE / ACE_FIFO_SIZE)
+#define ACE_BUS_WIDTH_8 0
+#define ACE_BUS_WIDTH_16 1
+
struct ace_reg_ops;
struct ace_device {
@@ -188,7 +195,7 @@ struct ace_device {
/* Details of hardware device */
unsigned long physaddr;
- void *baseaddr;
+ void __iomem *baseaddr;
int irq;
int bus_width; /* 0 := 8 bit; 1 := 16 bit */
struct ace_reg_ops *reg_ops;
@@ -220,20 +227,20 @@ struct ace_reg_ops {
/* 8 Bit bus width */
static u16 ace_in_8(struct ace_device *ace, int reg)
{
- void *r = ace->baseaddr + reg;
+ void __iomem *r = ace->baseaddr + reg;
return in_8(r) | (in_8(r + 1) << 8);
}
static void ace_out_8(struct ace_device *ace, int reg, u16 val)
{
- void *r = ace->baseaddr + reg;
+ void __iomem *r = ace->baseaddr + reg;
out_8(r, val);
out_8(r + 1, val >> 8);
}
static void ace_datain_8(struct ace_device *ace)
{
- void *r = ace->baseaddr + 0x40;
+ void __iomem *r = ace->baseaddr + 0x40;
u8 *dst = ace->data_ptr;
int i = ACE_FIFO_SIZE;
while (i--)
@@ -243,7 +250,7 @@ static void ace_datain_8(struct ace_device *ace)
static void ace_dataout_8(struct ace_device *ace)
{
- void *r = ace->baseaddr + 0x40;
+ void __iomem *r = ace->baseaddr + 0x40;
u8 *src = ace->data_ptr;
int i = ACE_FIFO_SIZE;
while (i--)
@@ -931,9 +938,11 @@ static int __devinit ace_setup(struct ace_device *ace)
{
u16 version;
u16 val;
-
int rc;
+ dev_dbg(ace->dev, "ace_setup(ace=0x%p)\n", ace);
+ dev_dbg(ace->dev, "physaddr=0x%lx irq=%i\n", ace->physaddr, ace->irq);
+
spin_lock_init(&ace->lock);
init_completion(&ace->id_completion);
@@ -944,15 +953,6 @@ static int __devinit ace_setup(struct ace_device *ace)
if (!ace->baseaddr)
goto err_ioremap;
- if (ace->irq != NO_IRQ) {
- rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
- if (rc) {
- /* Failure - fall back to polled mode */
- dev_err(ace->dev, "request_irq failed\n");
- ace->irq = NO_IRQ;
- }
- }
-
/*
* Initialize the state machine tasklet and stall timer
*/
@@ -982,7 +982,7 @@ static int __devinit ace_setup(struct ace_device *ace)
snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');
/* set bus width */
- if (ace->bus_width == 1) {
+ if (ace->bus_width == ACE_BUS_WIDTH_16) {
/* 0x0101 should work regardless of endianess */
ace_out_le16(ace, ACE_BUSMODE, 0x0101);
@@ -1005,6 +1005,16 @@ static int __devinit ace_setup(struct ace_device *ace)
ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE |
ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ);
+ /* Now we can hook up the irq handler */
+ if (ace->irq != NO_IRQ) {
+ rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
+ if (rc) {
+ /* Failure - fall back to polled mode */
+ dev_err(ace->dev, "request_irq failed\n");
+ ace->irq = NO_IRQ;
+ }
+ }
+
/* Enable interrupts */
val = ace_in(ace, ACE_CTRL);
val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ;
@@ -1024,16 +1034,14 @@ static int __devinit ace_setup(struct ace_device *ace)
return 0;
- err_read:
+err_read:
put_disk(ace->gd);
- err_alloc_disk:
+err_alloc_disk:
blk_cleanup_queue(ace->queue);
- err_blk_initq:
+err_blk_initq:
iounmap(ace->baseaddr);
- if (ace->irq != NO_IRQ)
- free_irq(ace->irq, ace);
- err_ioremap:
- printk(KERN_INFO "xsysace: error initializing device at 0x%lx\n",
+err_ioremap:
+ dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n",
ace->physaddr);
return -ENOMEM;
}
@@ -1056,98 +1064,222 @@ static void __devexit ace_teardown(struct ace_device *ace)
iounmap(ace->baseaddr);
}
-/* ---------------------------------------------------------------------
- * Platform Bus Support
- */
-
-static int __devinit ace_probe(struct device *device)
+static int __devinit
+ace_alloc(struct device *dev, int id, unsigned long physaddr,
+ int irq, int bus_width)
{
- struct platform_device *dev = to_platform_device(device);
struct ace_device *ace;
- int i;
+ int rc;
+ dev_dbg(dev, "ace_alloc(%p)\n", dev);
- dev_dbg(device, "ace_probe(%p)\n", device);
+ if (!physaddr) {
+ rc = -ENODEV;
+ goto err_noreg;
+ }
- /*
- * Allocate the ace device structure
- */
+ /* Allocate and initialize the ace device structure */
ace = kzalloc(sizeof(struct ace_device), GFP_KERNEL);
- if (!ace)
+ if (!ace) {
+ rc = -ENOMEM;
goto err_alloc;
-
- ace->dev = device;
- ace->id = dev->id;
- ace->irq = NO_IRQ;
-
- for (i = 0; i < dev->num_resources; i++) {
- if (dev->resource[i].flags & IORESOURCE_MEM)
- ace->physaddr = dev->resource[i].start;
- if (dev->resource[i].flags & IORESOURCE_IRQ)
- ace->irq = dev->resource[i].start;
}
- /* FIXME: Should get bus_width from the platform_device struct */
- ace->bus_width = 1;
-
- dev_set_drvdata(&dev->dev, ace);
+ ace->dev = dev;
+ ace->id = id;
+ ace->physaddr = physaddr;
+ ace->irq = irq;
+ ace->bus_width = bus_width;
- /* Call the bus-independant setup code */
- if (ace_setup(ace) != 0)
+ /* Call the setup code */
+ rc = ace_setup(ace);
+ if (rc)
goto err_setup;
+ dev_set_drvdata(dev, ace);
return 0;
- err_setup:
- dev_set_drvdata(&dev->dev, NULL);
+err_setup:
+ dev_set_drvdata(dev, NULL);
kfree(ace);
- err_alloc:
- printk(KERN_ERR "xsysace: could not initialize device\n");
- return -ENOMEM;
+err_alloc:
+err_noreg:
+ dev_err(dev, "could not initialize device, err=%i\n", rc);
+ return rc;
}
-/*
- * Platform bus remove() method
- */
-static int __devexit ace_remove(struct device *device)
+static void __devexit ace_free(struct device *dev)
{
- struct ace_device *ace = dev_get_drvdata(device);
-
- dev_dbg(device, "ace_remove(%p)\n", device);
+ struct ace_device *ace = dev_get_drvdata(dev);
+ dev_dbg(dev, "ace_free(%p)\n", dev);
if (ace) {
ace_teardown(ace);
+ dev_set_drvdata(dev, NULL);
kfree(ace);
}
+}
+
+/* ---------------------------------------------------------------------
+ * Platform Bus Support
+ */
+
+static int __devinit ace_probe(struct platform_device *dev)
+{
+ unsigned long physaddr = 0;
+ int bus_width = ACE_BUS_WIDTH_16; /* FIXME: should not be hard coded */
+ int id = dev->id;
+ int irq = NO_IRQ;
+ int i;
+ dev_dbg(&dev->dev, "ace_probe(%p)\n", dev);
+
+ for (i = 0; i < dev->num_resources; i++) {
+ if (dev->resource[i].flags & IORESOURCE_MEM)
+ physaddr = dev->resource[i].start;
+ if (dev->resource[i].flags & IORESOURCE_IRQ)
+ irq = dev->resource[i].start;
+ }
+
+ /* Call the bus-independant setup code */
+ return ace_alloc(&dev->dev, id, physaddr, irq, bus_width);
+}
+
+/*
+ * Platform bus remove() method
+ */
+static int __devexit ace_remove(struct platform_device *dev)
+{
+ ace_free(&dev->dev);
return 0;
}
-static struct device_driver ace_driver = {
- .name = "xsysace",
- .bus = &platform_bus_type,
+static struct platform_driver ace_platform_driver = {
.probe = ace_probe,
.remove = __devexit_p(ace_remove),
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "xsysace",
+ },
+};
+
+/* ---------------------------------------------------------------------
+ * OF_Platform Bus Support
+ */
+
+#if defined(CONFIG_OF)
+static int __devinit
+ace_of_probe(struct of_device *op, const struct of_device_id *match)
+{
+ struct resource res;
+ unsigned long physaddr;
+ const u32 *id;
+ int irq, bus_width, rc;
+
+ dev_dbg(&op->dev, "ace_of_probe(%p, %p)\n", op, match);
+
+ /* device id */
+ id = of_get_property(op->node, "port-number", NULL);
+
+ /* physaddr */
+ rc = of_address_to_resource(op->node, 0, &res);
+ if (rc) {
+ dev_err(&op->dev, "invalid address\n");
+ return rc;
+ }
+ physaddr = res.start;
+
+ /* irq */
+ irq = irq_of_parse_and_map(op->node, 0);
+
+ /* bus width */
+ bus_width = ACE_BUS_WIDTH_16;
+ if (of_find_property(op->node, "8-bit", NULL))
+ bus_width = ACE_BUS_WIDTH_8;
+
+ /* Call the bus-independant setup code */
+ return ace_alloc(&op->dev, id ? *id : 0, physaddr, irq, bus_width);
+}
+
+static int __devexit ace_of_remove(struct of_device *op)
+{
+ ace_free(&op->dev);
+ return 0;
+}
+
+/* Match table for of_platform binding */
+static struct of_device_id __devinit ace_of_match[] = {
+ { .compatible = "xilinx,xsysace", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ace_of_match);
+
+static struct of_platform_driver ace_of_driver = {
+ .owner = THIS_MODULE,
+ .name = "xsysace",
+ .match_table = ace_of_match,
+ .probe = ace_of_probe,
+ .remove = __devexit_p(ace_of_remove),
+ .driver = {
+ .name = "xsysace",
+ },
};
+/* Registration helpers to keep the number of #ifdefs to a minimum */
+static inline int __init ace_of_register(void)
+{
+ pr_debug("xsysace: registering OF binding\n");
+ return of_register_platform_driver(&ace_of_driver);
+}
+
+static inline void __exit ace_of_unregister(void)
+{
+ of_unregister_platform_driver(&ace_of_driver);
+}
+#else /* CONFIG_OF */
+/* CONFIG_OF not enabled; do nothing helpers */
+static inline int __init ace_of_register(void) { return 0; }
+static inline void __exit ace_of_unregister(void) { }
+#endif /* CONFIG_OF */
+
/* ---------------------------------------------------------------------
* Module init/exit routines
*/
static int __init ace_init(void)
{
+ int rc;
+
ace_major = register_blkdev(ace_major, "xsysace");
if (ace_major <= 0) {
- printk(KERN_WARNING "xsysace: register_blkdev() failed\n");
- return ace_major;
+ rc = -ENOMEM;
+ goto err_blk;
}
- pr_debug("Registering Xilinx SystemACE driver, major=%i\n", ace_major);
- return driver_register(&ace_driver);
+ rc = ace_of_register();
+ if (rc)
+ goto err_of;
+
+ pr_debug("xsysace: registering platform binding\n");
+ rc = platform_driver_register(&ace_platform_driver);
+ if (rc)
+ goto err_plat;
+
+ pr_info("Xilinx SystemACE device driver, major=%i\n", ace_major);
+ return 0;
+
+err_plat:
+ ace_of_unregister();
+err_of:
+ unregister_blkdev(ace_major, "xsysace");
+err_blk:
+ printk(KERN_ERR "xsysace: registration failed; err=%i\n", rc);
+ return rc;
}
static void __exit ace_exit(void)
{
pr_debug("Unregistering Xilinx SystemACE driver\n");
- driver_unregister(&ace_driver);
+ platform_driver_unregister(&ace_platform_driver);
+ ace_of_unregister();
unregister_blkdev(ace_major, "xsysace");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 09:53:19 +0000