struct list_head lu_list;
u64 management_agent_address;
+ u64 guid;
int directory_id;
int node_id;
int address_high;
#define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
#define SBP2_ORB_NULL 0x80000000
#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
-#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
-
-#define SBP2_DIRECTION_TO_MEDIA 0x0
-#define SBP2_DIRECTION_FROM_MEDIA 0x1
+#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
+#define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */
/* Unit directory keys */
#define SBP2_CSR_UNIT_CHARACTERISTICS 0x3a
};
struct sbp2_pointer {
- u32 high;
- u32 low;
+ __be32 high;
+ __be32 low;
};
struct sbp2_orb {
struct {
struct sbp2_pointer password;
struct sbp2_pointer response;
- u32 misc;
- u32 length;
+ __be32 misc;
+ __be32 length;
struct sbp2_pointer status_fifo;
} request;
__be32 response[4];
struct sbp2_status status;
};
-#define LOGIN_RESPONSE_GET_LOGIN_ID(v) ((v).misc & 0xffff)
-#define LOGIN_RESPONSE_GET_LENGTH(v) (((v).misc >> 16) & 0xffff)
-
struct sbp2_login_response {
- u32 misc;
+ __be32 misc;
struct sbp2_pointer command_block_agent;
- u32 reconnect_hold;
+ __be32 reconnect_hold;
};
#define COMMAND_ORB_DATA_SIZE(v) ((v))
#define COMMAND_ORB_PAGE_SIZE(v) ((v) << 16)
#define COMMAND_ORB_PAGE_TABLE_PRESENT ((1) << 19)
#define COMMAND_ORB_MAX_PAYLOAD(v) ((v) << 20)
#define COMMAND_ORB_SPEED(v) ((v) << 24)
-#define COMMAND_ORB_DIRECTION(v) ((v) << 27)
+#define COMMAND_ORB_DIRECTION ((1) << 27)
#define COMMAND_ORB_REQUEST_FORMAT(v) ((v) << 29)
#define COMMAND_ORB_NOTIFY ((1) << 31)
struct {
struct sbp2_pointer next;
struct sbp2_pointer data_descriptor;
- u32 misc;
+ __be32 misc;
u8 command_block[12];
} request;
struct scsi_cmnd *cmd;
unsigned long flags;
orb->pointer.high = 0;
- orb->pointer.low = orb->request_bus;
- fw_memcpy_to_be32(&orb->pointer, &orb->pointer, sizeof(orb->pointer));
+ orb->pointer.low = cpu_to_be32(orb->request_bus);
spin_lock_irqsave(&device->card->lock, flags);
list_add_tail(&orb->link, &lu->orb_list);
if (dma_mapping_error(orb->response_bus))
goto fail_mapping_response;
- orb->request.response.high = 0;
- orb->request.response.low = orb->response_bus;
+ orb->request.response.high = 0;
+ orb->request.response.low = cpu_to_be32(orb->response_bus);
- orb->request.misc =
+ orb->request.misc = cpu_to_be32(
MANAGEMENT_ORB_NOTIFY |
MANAGEMENT_ORB_FUNCTION(function) |
- MANAGEMENT_ORB_LUN(lun_or_login_id);
- orb->request.length =
- MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response));
+ MANAGEMENT_ORB_LUN(lun_or_login_id));
+ orb->request.length = cpu_to_be32(
+ MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response)));
- orb->request.status_fifo.high = lu->address_handler.offset >> 32;
- orb->request.status_fifo.low = lu->address_handler.offset;
+ orb->request.status_fifo.high =
+ cpu_to_be32(lu->address_handler.offset >> 32);
+ orb->request.status_fifo.low =
+ cpu_to_be32(lu->address_handler.offset);
if (function == SBP2_LOGIN_REQUEST) {
/* Ask for 2^2 == 4 seconds reconnect grace period */
- orb->request.misc |=
+ orb->request.misc |= cpu_to_be32(
MANAGEMENT_ORB_RECONNECT(2) |
- MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login);
+ MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login));
timeout = lu->tgt->mgt_orb_timeout;
} else {
timeout = SBP2_ORB_TIMEOUT;
}
- fw_memcpy_to_be32(&orb->request, &orb->request, sizeof(orb->request));
-
init_completion(&orb->done);
orb->base.callback = complete_management_orb;
sizeof(orb->response), DMA_FROM_DEVICE);
fail_mapping_response:
if (response)
- fw_memcpy_from_be32(response,
- orb->response, sizeof(orb->response));
+ memcpy(response, orb->response, sizeof(orb->response));
kref_put(&orb->base.kref, free_orb);
return retval;
if (!tgt->dont_block && !lu->blocked &&
lu->generation != card->generation) {
lu->blocked = true;
- if (++tgt->blocked == 1) {
+ if (++tgt->blocked == 1)
scsi_block_requests(shost);
- fw_notify("blocked %s\n", lu->tgt->bus_id);
- }
}
spin_unlock_irqrestore(&card->lock, flags);
}
}
spin_unlock_irqrestore(&card->lock, flags);
- if (unblock) {
+ if (unblock)
scsi_unblock_requests(shost);
- fw_notify("unblocked %s\n", lu->tgt->bus_id);
- }
}
/*
kfree(lu);
}
scsi_remove_host(shost);
- fw_notify("released %s\n", tgt->bus_id);
+ fw_notify("released %s, target %d:0:0\n", tgt->bus_id, shost->host_no);
- put_device(&tgt->unit->device);
+ fw_unit_put(tgt->unit);
scsi_host_put(shost);
fw_device_put(device);
}
complete(done);
}
+/*
+ * Write retransmit retry values into the BUSY_TIMEOUT register.
+ * - The single-phase retry protocol is supported by all SBP-2 devices, but the
+ * default retry_limit value is 0 (i.e. never retry transmission). We write a
+ * saner value after logging into the device.
+ * - The dual-phase retry protocol is optional to implement, and if not
+ * supported, writes to the dual-phase portion of the register will be
+ * ignored. We try to write the original 1394-1995 default here.
+ * - In the case of devices that are also SBP-3-compliant, all writes are
+ * ignored, as the register is read-only, but contains single-phase retry of
+ * 15, which is what we're trying to set for all SBP-2 device anyway, so this
+ * write attempt is safe and yields more consistent behavior for all devices.
+ *
+ * See section 8.3.2.3.5 of the 1394-1995 spec, section 6.2 of the SBP-2 spec,
+ * and section 6.4 of the SBP-3 spec for further details.
+ */
static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
{
struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
struct fw_transaction t;
static __be32 busy_timeout;
- /* FIXME: we should try to set dual-phase cycle_limit too */
- busy_timeout = cpu_to_be32(SBP2_RETRY_LIMIT);
+ busy_timeout = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
tgt->address_high = local_node_id << 16;
sbp2_set_generation(lu, generation);
- /* Get command block agent offset and login id. */
lu->command_block_agent_address =
- ((u64) (response.command_block_agent.high & 0xffff) << 32) |
- response.command_block_agent.low;
- lu->login_id = LOGIN_RESPONSE_GET_LOGIN_ID(response);
+ ((u64)(be32_to_cpu(response.command_block_agent.high) & 0xffff)
+ << 32) | be32_to_cpu(response.command_block_agent.low);
+ lu->login_id = be32_to_cpu(response.misc) & 0xffff;
fw_notify("%s: logged in to LUN %04x (%d retries)\n",
tgt->bus_id, lu->lun, lu->retries);
kref_init(&tgt->kref);
INIT_LIST_HEAD(&tgt->lu_list);
tgt->bus_id = unit->device.bus_id;
+ tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
if (fw_device_enable_phys_dma(device) < 0)
goto fail_shost_put;
goto fail_shost_put;
fw_device_get(device);
- get_device(&unit->device);
+ fw_unit_get(unit);
/* Initialize to values that won't match anything in our table. */
firmware_revision = 0xff000000;
* tables.
*/
if (count == 1 && sg_dma_len(sg) < SBP2_MAX_SG_ELEMENT_LENGTH) {
- orb->request.data_descriptor.high = lu->tgt->address_high;
- orb->request.data_descriptor.low = sg_dma_address(sg);
- orb->request.misc |= COMMAND_ORB_DATA_SIZE(sg_dma_len(sg));
+ orb->request.data_descriptor.high =
+ cpu_to_be32(lu->tgt->address_high);
+ orb->request.data_descriptor.low =
+ cpu_to_be32(sg_dma_address(sg));
+ orb->request.misc |=
+ cpu_to_be32(COMMAND_ORB_DATA_SIZE(sg_dma_len(sg)));
return 0;
}
goto fail_page_table;
}
l = min(sg_len, SBP2_MAX_SG_ELEMENT_LENGTH);
- orb->page_table[j].low = sg_addr;
- orb->page_table[j].high = (l << 16);
+ orb->page_table[j].low = cpu_to_be32(sg_addr);
+ orb->page_table[j].high = cpu_to_be32(l << 16);
sg_addr += l;
sg_len -= l;
j++;
}
}
- fw_memcpy_to_be32(orb->page_table, orb->page_table,
- sizeof(orb->page_table[0]) * j);
orb->page_table_bus =
dma_map_single(device->card->device, orb->page_table,
sizeof(orb->page_table), DMA_TO_DEVICE);
* initiator (i.e. us), but data_descriptor can refer to data
* on other nodes so we need to put our ID in descriptor.high.
*/
- orb->request.data_descriptor.high = lu->tgt->address_high;
- orb->request.data_descriptor.low = orb->page_table_bus;
- orb->request.misc |=
- COMMAND_ORB_PAGE_TABLE_PRESENT |
- COMMAND_ORB_DATA_SIZE(j);
+ orb->request.data_descriptor.high = cpu_to_be32(lu->tgt->address_high);
+ orb->request.data_descriptor.low = cpu_to_be32(orb->page_table_bus);
+ orb->request.misc |= cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT |
+ COMMAND_ORB_DATA_SIZE(j));
return 0;
orb->done = done;
orb->cmd = cmd;
- orb->request.next.high = SBP2_ORB_NULL;
- orb->request.next.low = 0x0;
+ orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
/*
* At speed 100 we can do 512 bytes per packet, at speed 200,
* 1024 bytes per packet etc. The SBP-2 max_payload field
*/
max_payload = min(device->max_speed + 7,
device->card->max_receive - 1);
- orb->request.misc =
+ orb->request.misc = cpu_to_be32(
COMMAND_ORB_MAX_PAYLOAD(max_payload) |
COMMAND_ORB_SPEED(device->max_speed) |
- COMMAND_ORB_NOTIFY;
+ COMMAND_ORB_NOTIFY);
if (cmd->sc_data_direction == DMA_FROM_DEVICE)
- orb->request.misc |=
- COMMAND_ORB_DIRECTION(SBP2_DIRECTION_FROM_MEDIA);
- else if (cmd->sc_data_direction == DMA_TO_DEVICE)
- orb->request.misc |=
- COMMAND_ORB_DIRECTION(SBP2_DIRECTION_TO_MEDIA);
+ orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION);
if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0)
goto out;
- fw_memcpy_to_be32(&orb->request, &orb->request, sizeof(orb->request));
-
- memset(orb->request.command_block,
- 0, sizeof(orb->request.command_block));
- memcpy(orb->request.command_block, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
+ memcpy(orb->request.command_block, cmd->cmnd, cmd->cmd_len);
orb->base.callback = complete_command_orb;
orb->base.request_bus =
sdev->allow_restart = 1;
- /*
- * Update the dma alignment (minimum alignment requirements for
- * start and end of DMA transfers) to be a sector
- */
- blk_queue_update_dma_alignment(sdev->request_queue, 511);
+ /* SBP-2 requires quadlet alignment of the data buffers. */
+ blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36)
sdev->inquiry_len = 36;
{
struct scsi_device *sdev = to_scsi_device(dev);
struct sbp2_logical_unit *lu;
- struct fw_device *device;
if (!sdev)
return 0;
lu = sdev->hostdata;
- device = fw_device(lu->tgt->unit->device.parent);
- return sprintf(buf, "%08x%08x:%06x:%04x\n",
- device->config_rom[3], device->config_rom[4],
+ return sprintf(buf, "%016llx:%06x:%04x\n",
+ (unsigned long long)lu->tgt->guid,
lu->tgt->directory_id, lu->lun);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff