forked from Minki/linux
firewire: fw-sbp2: add support for multiple logical units per target
Fixes "New firewire stack only recognizing half of a chain of drives", https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=242254 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter
parent
1b34e97441
commit
5a3c2be6c9
@ -102,11 +102,6 @@ fw_unit(struct device *dev)
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#define CSR_INSTANCE 0x18
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#define CSR_DIRECTORY_ID 0x20
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#define SBP2_COMMAND_SET_SPECIFIER 0x38
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#define SBP2_COMMAND_SET 0x39
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#define SBP2_COMMAND_SET_REVISION 0x3b
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#define SBP2_FIRMWARE_REVISION 0x3c
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struct fw_csr_iterator {
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u32 *p;
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u32 *end;
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@ -41,7 +41,6 @@
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_dbg.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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@ -66,31 +65,49 @@ typedef void (*scsi_done_fn_t)(struct scsi_cmnd *);
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static const char sbp2_driver_name[] = "sbp2";
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struct sbp2_device {
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struct kref kref;
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struct fw_unit *unit;
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/*
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* We create one struct sbp2_logical_unit per SBP-2 Logical Unit Number Entry
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* and one struct scsi_device per sbp2_logical_unit.
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*/
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struct sbp2_logical_unit {
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struct sbp2_target *tgt;
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struct list_head link;
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struct scsi_device *sdev;
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struct fw_address_handler address_handler;
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struct list_head orb_list;
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u64 management_agent_address;
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u64 command_block_agent_address;
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u32 workarounds;
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u16 lun;
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int login_id;
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/*
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* We cache these addresses and only update them once we've
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* logged in or reconnected to the sbp2 device. That way, any
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* IO to the device will automatically fail and get retried if
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* it happens in a window where the device is not ready to
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* handle it (e.g. after a bus reset but before we reconnect).
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* The generation is updated once we've logged in or reconnected
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* to the logical unit. Thus, I/O to the device will automatically
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* fail and get retried if it happens in a window where the device
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* is not ready, e.g. after a bus reset but before we reconnect.
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*/
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int node_id;
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int address_high;
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int generation;
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int retries;
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struct delayed_work work;
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};
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/*
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* We create one struct sbp2_target per IEEE 1212 Unit Directory
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* and one struct Scsi_Host per sbp2_target.
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*/
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struct sbp2_target {
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struct kref kref;
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struct fw_unit *unit;
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u64 management_agent_address;
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int directory_id;
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int node_id;
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int address_high;
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unsigned workarounds;
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struct list_head lu_list;
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};
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#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
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#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
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#define SBP2_ORB_TIMEOUT 2000 /* Timeout in ms */
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@ -101,10 +118,9 @@ struct sbp2_device {
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#define SBP2_DIRECTION_FROM_MEDIA 0x1
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/* Unit directory keys */
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#define SBP2_COMMAND_SET_SPECIFIER 0x38
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#define SBP2_COMMAND_SET 0x39
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#define SBP2_COMMAND_SET_REVISION 0x3b
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#define SBP2_FIRMWARE_REVISION 0x3c
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#define SBP2_CSR_FIRMWARE_REVISION 0x3c
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#define SBP2_CSR_LOGICAL_UNIT_NUMBER 0x14
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#define SBP2_CSR_LOGICAL_UNIT_DIRECTORY 0xd4
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/* Flags for detected oddities and brokeness */
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#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
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@ -219,7 +235,7 @@ struct sbp2_command_orb {
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} request;
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struct scsi_cmnd *cmd;
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scsi_done_fn_t done;
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struct fw_unit *unit;
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struct sbp2_logical_unit *lu;
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struct sbp2_pointer page_table[SG_ALL] __attribute__((aligned(8)));
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dma_addr_t page_table_bus;
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@ -295,7 +311,7 @@ sbp2_status_write(struct fw_card *card, struct fw_request *request,
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unsigned long long offset,
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void *payload, size_t length, void *callback_data)
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{
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struct sbp2_device *sd = callback_data;
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struct sbp2_logical_unit *lu = callback_data;
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struct sbp2_orb *orb;
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struct sbp2_status status;
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size_t header_size;
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@ -319,7 +335,7 @@ sbp2_status_write(struct fw_card *card, struct fw_request *request,
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/* Lookup the orb corresponding to this status write. */
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spin_lock_irqsave(&card->lock, flags);
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list_for_each_entry(orb, &sd->orb_list, link) {
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list_for_each_entry(orb, &lu->orb_list, link) {
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if (STATUS_GET_ORB_HIGH(status) == 0 &&
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STATUS_GET_ORB_LOW(status) == orb->request_bus) {
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orb->rcode = RCODE_COMPLETE;
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@ -329,7 +345,7 @@ sbp2_status_write(struct fw_card *card, struct fw_request *request,
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}
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spin_unlock_irqrestore(&card->lock, flags);
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if (&orb->link != &sd->orb_list)
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if (&orb->link != &lu->orb_list)
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orb->callback(orb, &status);
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else
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fw_error("status write for unknown orb\n");
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@ -371,11 +387,10 @@ complete_transaction(struct fw_card *card, int rcode,
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}
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static void
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sbp2_send_orb(struct sbp2_orb *orb, struct fw_unit *unit,
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sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
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int node_id, int generation, u64 offset)
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{
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struct fw_device *device = fw_device(unit->device.parent);
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struct sbp2_device *sd = unit->device.driver_data;
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struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
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unsigned long flags;
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orb->pointer.high = 0;
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@ -383,7 +398,7 @@ sbp2_send_orb(struct sbp2_orb *orb, struct fw_unit *unit,
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fw_memcpy_to_be32(&orb->pointer, &orb->pointer, sizeof(orb->pointer));
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spin_lock_irqsave(&device->card->lock, flags);
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list_add_tail(&orb->link, &sd->orb_list);
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list_add_tail(&orb->link, &lu->orb_list);
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spin_unlock_irqrestore(&device->card->lock, flags);
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/* Take a ref for the orb list and for the transaction callback. */
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@ -396,10 +411,9 @@ sbp2_send_orb(struct sbp2_orb *orb, struct fw_unit *unit,
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complete_transaction, orb);
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}
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static int sbp2_cancel_orbs(struct fw_unit *unit)
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static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu)
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{
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struct fw_device *device = fw_device(unit->device.parent);
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struct sbp2_device *sd = unit->device.driver_data;
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struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
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struct sbp2_orb *orb, *next;
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struct list_head list;
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unsigned long flags;
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@ -407,7 +421,7 @@ static int sbp2_cancel_orbs(struct fw_unit *unit)
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INIT_LIST_HEAD(&list);
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spin_lock_irqsave(&device->card->lock, flags);
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list_splice_init(&sd->orb_list, &list);
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list_splice_init(&lu->orb_list, &list);
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spin_unlock_irqrestore(&device->card->lock, flags);
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list_for_each_entry_safe(orb, next, &list, link) {
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@ -434,11 +448,11 @@ complete_management_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
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}
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static int
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sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation,
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int function, int lun, void *response)
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sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id,
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int generation, int function, int lun_or_login_id,
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void *response)
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{
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struct fw_device *device = fw_device(unit->device.parent);
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struct sbp2_device *sd = unit->device.driver_data;
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struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
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struct sbp2_management_orb *orb;
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int retval = -ENOMEM;
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@ -459,12 +473,12 @@ sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation,
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orb->request.misc =
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MANAGEMENT_ORB_NOTIFY |
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MANAGEMENT_ORB_FUNCTION(function) |
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MANAGEMENT_ORB_LUN(lun);
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MANAGEMENT_ORB_LUN(lun_or_login_id);
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orb->request.length =
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MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response));
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orb->request.status_fifo.high = sd->address_handler.offset >> 32;
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orb->request.status_fifo.low = sd->address_handler.offset;
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orb->request.status_fifo.high = lu->address_handler.offset >> 32;
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orb->request.status_fifo.low = lu->address_handler.offset;
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if (function == SBP2_LOGIN_REQUEST) {
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orb->request.misc |=
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@ -483,14 +497,14 @@ sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation,
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if (dma_mapping_error(orb->base.request_bus))
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goto fail_mapping_request;
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sbp2_send_orb(&orb->base, unit,
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node_id, generation, sd->management_agent_address);
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sbp2_send_orb(&orb->base, lu, node_id, generation,
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lu->tgt->management_agent_address);
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wait_for_completion_timeout(&orb->done,
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msecs_to_jiffies(SBP2_ORB_TIMEOUT));
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retval = -EIO;
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if (sbp2_cancel_orbs(unit) == 0) {
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if (sbp2_cancel_orbs(lu) == 0) {
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fw_error("orb reply timed out, rcode=0x%02x\n",
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orb->base.rcode);
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goto out;
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@ -535,10 +549,9 @@ complete_agent_reset_write(struct fw_card *card, int rcode,
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kfree(t);
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}
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static int sbp2_agent_reset(struct fw_unit *unit)
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static int sbp2_agent_reset(struct sbp2_logical_unit *lu)
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{
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struct fw_device *device = fw_device(unit->device.parent);
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struct sbp2_device *sd = unit->device.driver_data;
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struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
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struct fw_transaction *t;
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static u32 zero;
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@ -547,181 +560,261 @@ static int sbp2_agent_reset(struct fw_unit *unit)
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return -ENOMEM;
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fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST,
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sd->node_id, sd->generation, device->max_speed,
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sd->command_block_agent_address + SBP2_AGENT_RESET,
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lu->tgt->node_id, lu->generation, device->max_speed,
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lu->command_block_agent_address + SBP2_AGENT_RESET,
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&zero, sizeof(zero), complete_agent_reset_write, t);
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return 0;
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}
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static void sbp2_reconnect(struct work_struct *work);
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static struct scsi_host_template scsi_driver_template;
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static void release_sbp2_device(struct kref *kref)
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static void sbp2_release_target(struct kref *kref)
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{
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struct sbp2_device *sd = container_of(kref, struct sbp2_device, kref);
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struct Scsi_Host *host =
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container_of((void *)sd, struct Scsi_Host, hostdata[0]);
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struct sbp2_target *tgt = container_of(kref, struct sbp2_target, kref);
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struct sbp2_logical_unit *lu, *next;
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struct Scsi_Host *shost =
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container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
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scsi_remove_host(host);
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sbp2_send_management_orb(sd->unit, sd->node_id, sd->generation,
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SBP2_LOGOUT_REQUEST, sd->login_id, NULL);
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fw_core_remove_address_handler(&sd->address_handler);
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fw_notify("removed sbp2 unit %s\n", sd->unit->device.bus_id);
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put_device(&sd->unit->device);
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scsi_host_put(host);
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list_for_each_entry_safe(lu, next, &tgt->lu_list, link) {
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if (lu->sdev)
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scsi_remove_device(lu->sdev);
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sbp2_send_management_orb(lu, tgt->node_id, lu->generation,
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SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
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fw_core_remove_address_handler(&lu->address_handler);
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list_del(&lu->link);
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kfree(lu);
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}
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scsi_remove_host(shost);
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fw_notify("released %s\n", tgt->unit->device.bus_id);
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put_device(&tgt->unit->device);
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scsi_host_put(shost);
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}
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static void sbp2_reconnect(struct work_struct *work);
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static void sbp2_login(struct work_struct *work)
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{
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struct sbp2_device *sd =
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container_of(work, struct sbp2_device, work.work);
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struct Scsi_Host *host =
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container_of((void *)sd, struct Scsi_Host, hostdata[0]);
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struct fw_unit *unit = sd->unit;
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struct sbp2_logical_unit *lu =
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container_of(work, struct sbp2_logical_unit, work.work);
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struct Scsi_Host *shost =
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container_of((void *)lu->tgt, struct Scsi_Host, hostdata[0]);
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struct scsi_device *sdev;
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struct scsi_lun eight_bytes_lun;
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struct fw_unit *unit = lu->tgt->unit;
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struct fw_device *device = fw_device(unit->device.parent);
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struct sbp2_login_response response;
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int generation, node_id, local_node_id, lun, retval;
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/* FIXME: Make this work for multi-lun devices. */
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lun = 0;
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int generation, node_id, local_node_id;
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generation = device->card->generation;
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node_id = device->node->node_id;
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local_node_id = device->card->local_node->node_id;
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if (sbp2_send_management_orb(unit, node_id, generation,
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SBP2_LOGIN_REQUEST, lun, &response) < 0) {
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if (sd->retries++ < 5) {
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schedule_delayed_work(&sd->work, DIV_ROUND_UP(HZ, 5));
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if (sbp2_send_management_orb(lu, node_id, generation,
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SBP2_LOGIN_REQUEST, lu->lun, &response) < 0) {
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if (lu->retries++ < 5) {
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schedule_delayed_work(&lu->work, DIV_ROUND_UP(HZ, 5));
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} else {
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fw_error("failed to login to %s\n",
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unit->device.bus_id);
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kref_put(&sd->kref, release_sbp2_device);
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fw_error("failed to login to %s LUN %04x\n",
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unit->device.bus_id, lu->lun);
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kref_put(&lu->tgt->kref, sbp2_release_target);
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}
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return;
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}
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sd->generation = generation;
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sd->node_id = node_id;
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sd->address_high = local_node_id << 16;
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lu->generation = generation;
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lu->tgt->node_id = node_id;
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lu->tgt->address_high = local_node_id << 16;
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/* Get command block agent offset and login id. */
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sd->command_block_agent_address =
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lu->command_block_agent_address =
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((u64) (response.command_block_agent.high & 0xffff) << 32) |
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response.command_block_agent.low;
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sd->login_id = LOGIN_RESPONSE_GET_LOGIN_ID(response);
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lu->login_id = LOGIN_RESPONSE_GET_LOGIN_ID(response);
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fw_notify("logged in to sbp2 unit %s (%d retries)\n",
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unit->device.bus_id, sd->retries);
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fw_notify(" - management_agent_address: 0x%012llx\n",
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(unsigned long long) sd->management_agent_address);
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fw_notify(" - command_block_agent_address: 0x%012llx\n",
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(unsigned long long) sd->command_block_agent_address);
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fw_notify(" - status write address: 0x%012llx\n",
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(unsigned long long) sd->address_handler.offset);
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fw_notify("logged in to %s LUN %04x (%d retries)\n",
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unit->device.bus_id, lu->lun, lu->retries);
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#if 0
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/* FIXME: The linux1394 sbp2 does this last step. */
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sbp2_set_busy_timeout(scsi_id);
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#endif
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PREPARE_DELAYED_WORK(&sd->work, sbp2_reconnect);
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sbp2_agent_reset(unit);
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PREPARE_DELAYED_WORK(&lu->work, sbp2_reconnect);
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sbp2_agent_reset(lu);
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/* FIXME: Loop over luns here. */
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lun = 0;
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retval = scsi_add_device(host, 0, 0, lun);
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if (retval < 0) {
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sbp2_send_management_orb(unit, sd->node_id, sd->generation,
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SBP2_LOGOUT_REQUEST, sd->login_id,
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NULL);
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memset(&eight_bytes_lun, 0, sizeof(eight_bytes_lun));
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eight_bytes_lun.scsi_lun[0] = (lu->lun >> 8) & 0xff;
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eight_bytes_lun.scsi_lun[1] = lu->lun & 0xff;
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sdev = __scsi_add_device(shost, 0, 0,
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scsilun_to_int(&eight_bytes_lun), lu);
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if (IS_ERR(sdev)) {
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sbp2_send_management_orb(lu, node_id, generation,
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SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
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/*
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* Set this back to sbp2_login so we fall back and
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* retry login on bus reset.
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*/
|
||||
PREPARE_DELAYED_WORK(&sd->work, sbp2_login);
|
||||
PREPARE_DELAYED_WORK(&lu->work, sbp2_login);
|
||||
} else {
|
||||
lu->sdev = sdev;
|
||||
scsi_device_put(sdev);
|
||||
}
|
||||
kref_put(&sd->kref, release_sbp2_device);
|
||||
kref_put(&lu->tgt->kref, sbp2_release_target);
|
||||
}
|
||||
|
||||
static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry)
|
||||
{
|
||||
struct sbp2_logical_unit *lu;
|
||||
|
||||
lu = kmalloc(sizeof(*lu), GFP_KERNEL);
|
||||
if (!lu)
|
||||
return -ENOMEM;
|
||||
|
||||
lu->address_handler.length = 0x100;
|
||||
lu->address_handler.address_callback = sbp2_status_write;
|
||||
lu->address_handler.callback_data = lu;
|
||||
|
||||
if (fw_core_add_address_handler(&lu->address_handler,
|
||||
&fw_high_memory_region) < 0) {
|
||||
kfree(lu);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
lu->tgt = tgt;
|
||||
lu->sdev = NULL;
|
||||
lu->lun = lun_entry & 0xffff;
|
||||
lu->retries = 0;
|
||||
INIT_LIST_HEAD(&lu->orb_list);
|
||||
INIT_DELAYED_WORK(&lu->work, sbp2_login);
|
||||
|
||||
list_add_tail(&lu->link, &tgt->lu_list);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory)
|
||||
{
|
||||
struct fw_csr_iterator ci;
|
||||
int key, value;
|
||||
|
||||
fw_csr_iterator_init(&ci, directory);
|
||||
while (fw_csr_iterator_next(&ci, &key, &value))
|
||||
if (key == SBP2_CSR_LOGICAL_UNIT_NUMBER &&
|
||||
sbp2_add_logical_unit(tgt, value) < 0)
|
||||
return -ENOMEM;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
|
||||
u32 *model, u32 *firmware_revision)
|
||||
{
|
||||
struct fw_csr_iterator ci;
|
||||
int key, value;
|
||||
|
||||
fw_csr_iterator_init(&ci, directory);
|
||||
while (fw_csr_iterator_next(&ci, &key, &value)) {
|
||||
switch (key) {
|
||||
|
||||
case CSR_DEPENDENT_INFO | CSR_OFFSET:
|
||||
tgt->management_agent_address =
|
||||
CSR_REGISTER_BASE + 4 * value;
|
||||
break;
|
||||
|
||||
case CSR_DIRECTORY_ID:
|
||||
tgt->directory_id = value;
|
||||
break;
|
||||
|
||||
case CSR_MODEL:
|
||||
*model = value;
|
||||
break;
|
||||
|
||||
case SBP2_CSR_FIRMWARE_REVISION:
|
||||
*firmware_revision = value;
|
||||
break;
|
||||
|
||||
case SBP2_CSR_LOGICAL_UNIT_NUMBER:
|
||||
if (sbp2_add_logical_unit(tgt, value) < 0)
|
||||
return -ENOMEM;
|
||||
break;
|
||||
|
||||
case SBP2_CSR_LOGICAL_UNIT_DIRECTORY:
|
||||
if (sbp2_scan_logical_unit_dir(tgt, ci.p + value) < 0)
|
||||
return -ENOMEM;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void sbp2_init_workarounds(struct sbp2_target *tgt, u32 model,
|
||||
u32 firmware_revision)
|
||||
{
|
||||
int i;
|
||||
|
||||
tgt->workarounds = 0;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(sbp2_workarounds_table); i++) {
|
||||
|
||||
if (sbp2_workarounds_table[i].firmware_revision !=
|
||||
(firmware_revision & 0xffffff00))
|
||||
continue;
|
||||
|
||||
if (sbp2_workarounds_table[i].model != model &&
|
||||
sbp2_workarounds_table[i].model != ~0)
|
||||
continue;
|
||||
|
||||
tgt->workarounds |= sbp2_workarounds_table[i].workarounds;
|
||||
break;
|
||||
}
|
||||
|
||||
if (tgt->workarounds)
|
||||
fw_notify("Workarounds for %s: 0x%x "
|
||||
"(firmware_revision 0x%06x, model_id 0x%06x)\n",
|
||||
tgt->unit->device.bus_id,
|
||||
tgt->workarounds, firmware_revision, model);
|
||||
}
|
||||
|
||||
static struct scsi_host_template scsi_driver_template;
|
||||
|
||||
static int sbp2_probe(struct device *dev)
|
||||
{
|
||||
struct fw_unit *unit = fw_unit(dev);
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
struct sbp2_device *sd;
|
||||
struct fw_csr_iterator ci;
|
||||
struct Scsi_Host *host;
|
||||
int i, key, value, err;
|
||||
struct sbp2_target *tgt;
|
||||
struct sbp2_logical_unit *lu;
|
||||
struct Scsi_Host *shost;
|
||||
u32 model, firmware_revision;
|
||||
|
||||
err = -ENOMEM;
|
||||
host = scsi_host_alloc(&scsi_driver_template, sizeof(*sd));
|
||||
if (host == NULL)
|
||||
goto fail;
|
||||
shost = scsi_host_alloc(&scsi_driver_template, sizeof(*tgt));
|
||||
if (shost == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
sd = (struct sbp2_device *) host->hostdata;
|
||||
unit->device.driver_data = sd;
|
||||
sd->unit = unit;
|
||||
INIT_LIST_HEAD(&sd->orb_list);
|
||||
kref_init(&sd->kref);
|
||||
tgt = (struct sbp2_target *)shost->hostdata;
|
||||
unit->device.driver_data = tgt;
|
||||
tgt->unit = unit;
|
||||
kref_init(&tgt->kref);
|
||||
INIT_LIST_HEAD(&tgt->lu_list);
|
||||
|
||||
sd->address_handler.length = 0x100;
|
||||
sd->address_handler.address_callback = sbp2_status_write;
|
||||
sd->address_handler.callback_data = sd;
|
||||
if (fw_device_enable_phys_dma(device) < 0)
|
||||
goto fail_shost_put;
|
||||
|
||||
err = fw_core_add_address_handler(&sd->address_handler,
|
||||
&fw_high_memory_region);
|
||||
if (err < 0)
|
||||
goto fail_host;
|
||||
if (scsi_add_host(shost, &unit->device) < 0)
|
||||
goto fail_shost_put;
|
||||
|
||||
err = fw_device_enable_phys_dma(device);
|
||||
if (err < 0)
|
||||
goto fail_address_handler;
|
||||
|
||||
err = scsi_add_host(host, &unit->device);
|
||||
if (err < 0)
|
||||
goto fail_address_handler;
|
||||
|
||||
/*
|
||||
* Scan unit directory to get management agent address,
|
||||
* firmware revison and model. Initialize firmware_revision
|
||||
* and model to values that wont match anything in our table.
|
||||
*/
|
||||
/* Initialize to values that won't match anything in our table. */
|
||||
firmware_revision = 0xff000000;
|
||||
model = 0xff000000;
|
||||
fw_csr_iterator_init(&ci, unit->directory);
|
||||
while (fw_csr_iterator_next(&ci, &key, &value)) {
|
||||
switch (key) {
|
||||
case CSR_DEPENDENT_INFO | CSR_OFFSET:
|
||||
sd->management_agent_address =
|
||||
0xfffff0000000ULL + 4 * value;
|
||||
break;
|
||||
case SBP2_FIRMWARE_REVISION:
|
||||
firmware_revision = value;
|
||||
break;
|
||||
case CSR_MODEL:
|
||||
model = value;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(sbp2_workarounds_table); i++) {
|
||||
if (sbp2_workarounds_table[i].firmware_revision !=
|
||||
(firmware_revision & 0xffffff00))
|
||||
continue;
|
||||
if (sbp2_workarounds_table[i].model != model &&
|
||||
sbp2_workarounds_table[i].model != ~0)
|
||||
continue;
|
||||
sd->workarounds |= sbp2_workarounds_table[i].workarounds;
|
||||
break;
|
||||
}
|
||||
/* implicit directory ID */
|
||||
tgt->directory_id = ((unit->directory - device->config_rom) * 4
|
||||
+ CSR_CONFIG_ROM) & 0xffffff;
|
||||
|
||||
if (sd->workarounds)
|
||||
fw_notify("Workarounds for node %s: 0x%x "
|
||||
"(firmware_revision 0x%06x, model_id 0x%06x)\n",
|
||||
unit->device.bus_id,
|
||||
sd->workarounds, firmware_revision, model);
|
||||
if (sbp2_scan_unit_dir(tgt, unit->directory, &model,
|
||||
&firmware_revision) < 0)
|
||||
goto fail_tgt_put;
|
||||
|
||||
sbp2_init_workarounds(tgt, model, firmware_revision);
|
||||
|
||||
get_device(&unit->device);
|
||||
|
||||
@ -730,35 +823,34 @@ static int sbp2_probe(struct device *dev)
|
||||
* reschedule retries. Always get the ref before scheduling
|
||||
* work.
|
||||
*/
|
||||
INIT_DELAYED_WORK(&sd->work, sbp2_login);
|
||||
if (schedule_delayed_work(&sd->work, 0))
|
||||
kref_get(&sd->kref);
|
||||
|
||||
list_for_each_entry(lu, &tgt->lu_list, link)
|
||||
if (schedule_delayed_work(&lu->work, 0))
|
||||
kref_get(&tgt->kref);
|
||||
return 0;
|
||||
|
||||
fail_address_handler:
|
||||
fw_core_remove_address_handler(&sd->address_handler);
|
||||
fail_host:
|
||||
scsi_host_put(host);
|
||||
fail:
|
||||
return err;
|
||||
fail_tgt_put:
|
||||
kref_put(&tgt->kref, sbp2_release_target);
|
||||
return -ENOMEM;
|
||||
|
||||
fail_shost_put:
|
||||
scsi_host_put(shost);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
static int sbp2_remove(struct device *dev)
|
||||
{
|
||||
struct fw_unit *unit = fw_unit(dev);
|
||||
struct sbp2_device *sd = unit->device.driver_data;
|
||||
|
||||
kref_put(&sd->kref, release_sbp2_device);
|
||||
struct sbp2_target *tgt = unit->device.driver_data;
|
||||
|
||||
kref_put(&tgt->kref, sbp2_release_target);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void sbp2_reconnect(struct work_struct *work)
|
||||
{
|
||||
struct sbp2_device *sd =
|
||||
container_of(work, struct sbp2_device, work.work);
|
||||
struct fw_unit *unit = sd->unit;
|
||||
struct sbp2_logical_unit *lu =
|
||||
container_of(work, struct sbp2_logical_unit, work.work);
|
||||
struct fw_unit *unit = lu->tgt->unit;
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
int generation, node_id, local_node_id;
|
||||
|
||||
@ -766,40 +858,49 @@ static void sbp2_reconnect(struct work_struct *work)
|
||||
node_id = device->node->node_id;
|
||||
local_node_id = device->card->local_node->node_id;
|
||||
|
||||
if (sbp2_send_management_orb(unit, node_id, generation,
|
||||
if (sbp2_send_management_orb(lu, node_id, generation,
|
||||
SBP2_RECONNECT_REQUEST,
|
||||
sd->login_id, NULL) < 0) {
|
||||
if (sd->retries++ >= 5) {
|
||||
lu->login_id, NULL) < 0) {
|
||||
if (lu->retries++ >= 5) {
|
||||
fw_error("failed to reconnect to %s\n",
|
||||
unit->device.bus_id);
|
||||
/* Fall back and try to log in again. */
|
||||
sd->retries = 0;
|
||||
PREPARE_DELAYED_WORK(&sd->work, sbp2_login);
|
||||
lu->retries = 0;
|
||||
PREPARE_DELAYED_WORK(&lu->work, sbp2_login);
|
||||
}
|
||||
schedule_delayed_work(&sd->work, DIV_ROUND_UP(HZ, 5));
|
||||
schedule_delayed_work(&lu->work, DIV_ROUND_UP(HZ, 5));
|
||||
return;
|
||||
}
|
||||
|
||||
sd->generation = generation;
|
||||
sd->node_id = node_id;
|
||||
sd->address_high = local_node_id << 16;
|
||||
lu->generation = generation;
|
||||
lu->tgt->node_id = node_id;
|
||||
lu->tgt->address_high = local_node_id << 16;
|
||||
|
||||
fw_notify("reconnected to unit %s (%d retries)\n",
|
||||
unit->device.bus_id, sd->retries);
|
||||
sbp2_agent_reset(unit);
|
||||
sbp2_cancel_orbs(unit);
|
||||
kref_put(&sd->kref, release_sbp2_device);
|
||||
fw_notify("reconnected to %s LUN %04x (%d retries)\n",
|
||||
unit->device.bus_id, lu->lun, lu->retries);
|
||||
|
||||
sbp2_agent_reset(lu);
|
||||
sbp2_cancel_orbs(lu);
|
||||
|
||||
kref_put(&lu->tgt->kref, sbp2_release_target);
|
||||
}
|
||||
|
||||
static void sbp2_update(struct fw_unit *unit)
|
||||
{
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
struct sbp2_device *sd = unit->device.driver_data;
|
||||
struct sbp2_target *tgt = unit->device.driver_data;
|
||||
struct sbp2_logical_unit *lu;
|
||||
|
||||
sd->retries = 0;
|
||||
fw_device_enable_phys_dma(device);
|
||||
if (schedule_delayed_work(&sd->work, 0))
|
||||
kref_get(&sd->kref);
|
||||
fw_device_enable_phys_dma(fw_device(unit->device.parent));
|
||||
|
||||
/*
|
||||
* Fw-core serializes sbp2_update() against sbp2_remove().
|
||||
* Iteration over tgt->lu_list is therefore safe here.
|
||||
*/
|
||||
list_for_each_entry(lu, &tgt->lu_list, link) {
|
||||
lu->retries = 0;
|
||||
if (schedule_delayed_work(&lu->work, 0))
|
||||
kref_get(&tgt->kref);
|
||||
}
|
||||
}
|
||||
|
||||
#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
|
||||
@ -869,13 +970,12 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
|
||||
{
|
||||
struct sbp2_command_orb *orb =
|
||||
container_of(base_orb, struct sbp2_command_orb, base);
|
||||
struct fw_unit *unit = orb->unit;
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
struct fw_device *device = fw_device(orb->lu->tgt->unit->device.parent);
|
||||
int result;
|
||||
|
||||
if (status != NULL) {
|
||||
if (STATUS_GET_DEAD(*status))
|
||||
sbp2_agent_reset(unit);
|
||||
sbp2_agent_reset(orb->lu);
|
||||
|
||||
switch (STATUS_GET_RESPONSE(*status)) {
|
||||
case SBP2_STATUS_REQUEST_COMPLETE:
|
||||
@ -919,12 +1019,10 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status)
|
||||
orb->done(orb->cmd);
|
||||
}
|
||||
|
||||
static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
|
||||
static int
|
||||
sbp2_map_scatterlist(struct sbp2_command_orb *orb, struct fw_device *device,
|
||||
struct sbp2_logical_unit *lu)
|
||||
{
|
||||
struct sbp2_device *sd =
|
||||
(struct sbp2_device *)orb->cmd->device->host->hostdata;
|
||||
struct fw_unit *unit = sd->unit;
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
struct scatterlist *sg;
|
||||
int sg_len, l, i, j, count;
|
||||
dma_addr_t sg_addr;
|
||||
@ -943,10 +1041,9 @@ static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
|
||||
* tables.
|
||||
*/
|
||||
if (count == 1 && sg_dma_len(sg) < SBP2_MAX_SG_ELEMENT_LENGTH) {
|
||||
orb->request.data_descriptor.high = sd->address_high;
|
||||
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.misc |= COMMAND_ORB_DATA_SIZE(sg_dma_len(sg));
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -990,7 +1087,7 @@ static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
|
||||
* 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 = sd->address_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 |
|
||||
@ -1009,12 +1106,11 @@ static int sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb)
|
||||
|
||||
static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
|
||||
{
|
||||
struct sbp2_device *sd =
|
||||
(struct sbp2_device *)cmd->device->host->hostdata;
|
||||
struct fw_unit *unit = sd->unit;
|
||||
struct fw_device *device = fw_device(unit->device.parent);
|
||||
struct sbp2_logical_unit *lu = cmd->device->hostdata;
|
||||
struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
|
||||
struct sbp2_command_orb *orb;
|
||||
unsigned max_payload;
|
||||
int retval = SCSI_MLQUEUE_HOST_BUSY;
|
||||
|
||||
/*
|
||||
* Bidirectional commands are not yet implemented, and unknown
|
||||
@ -1030,14 +1126,14 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
|
||||
orb = kzalloc(sizeof(*orb), GFP_ATOMIC);
|
||||
if (orb == NULL) {
|
||||
fw_notify("failed to alloc orb\n");
|
||||
goto fail_alloc;
|
||||
return SCSI_MLQUEUE_HOST_BUSY;
|
||||
}
|
||||
|
||||
/* Initialize rcode to something not RCODE_COMPLETE. */
|
||||
orb->base.rcode = -1;
|
||||
kref_init(&orb->base.kref);
|
||||
|
||||
orb->unit = unit;
|
||||
orb->lu = lu;
|
||||
orb->done = done;
|
||||
orb->cmd = cmd;
|
||||
|
||||
@ -1063,8 +1159,8 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
|
||||
orb->request.misc |=
|
||||
COMMAND_ORB_DIRECTION(SBP2_DIRECTION_TO_MEDIA);
|
||||
|
||||
if (scsi_sg_count(cmd) && sbp2_command_orb_map_scatterlist(orb) < 0)
|
||||
goto fail_mapping;
|
||||
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));
|
||||
|
||||
@ -1077,49 +1173,47 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done)
|
||||
dma_map_single(device->card->device, &orb->request,
|
||||
sizeof(orb->request), DMA_TO_DEVICE);
|
||||
if (dma_mapping_error(orb->base.request_bus))
|
||||
goto fail_mapping;
|
||||
|
||||
sbp2_send_orb(&orb->base, unit, sd->node_id, sd->generation,
|
||||
sd->command_block_agent_address + SBP2_ORB_POINTER);
|
||||
goto out;
|
||||
|
||||
sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, lu->generation,
|
||||
lu->command_block_agent_address + SBP2_ORB_POINTER);
|
||||
retval = 0;
|
||||
out:
|
||||
kref_put(&orb->base.kref, free_orb);
|
||||
return 0;
|
||||
|
||||
fail_mapping:
|
||||
kref_put(&orb->base.kref, free_orb);
|
||||
fail_alloc:
|
||||
return SCSI_MLQUEUE_HOST_BUSY;
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int sbp2_scsi_slave_alloc(struct scsi_device *sdev)
|
||||
{
|
||||
struct sbp2_device *sd = (struct sbp2_device *)sdev->host->hostdata;
|
||||
struct sbp2_logical_unit *lu = sdev->hostdata;
|
||||
|
||||
sdev->allow_restart = 1;
|
||||
|
||||
if (sd->workarounds & SBP2_WORKAROUND_INQUIRY_36)
|
||||
if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36)
|
||||
sdev->inquiry_len = 36;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sbp2_scsi_slave_configure(struct scsi_device *sdev)
|
||||
{
|
||||
struct sbp2_device *sd = (struct sbp2_device *)sdev->host->hostdata;
|
||||
struct fw_unit *unit = sd->unit;
|
||||
struct sbp2_logical_unit *lu = sdev->hostdata;
|
||||
|
||||
sdev->use_10_for_rw = 1;
|
||||
|
||||
if (sdev->type == TYPE_ROM)
|
||||
sdev->use_10_for_ms = 1;
|
||||
|
||||
if (sdev->type == TYPE_DISK &&
|
||||
sd->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)
|
||||
lu->tgt->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)
|
||||
sdev->skip_ms_page_8 = 1;
|
||||
if (sd->workarounds & SBP2_WORKAROUND_FIX_CAPACITY) {
|
||||
fw_notify("setting fix_capacity for %s\n", unit->device.bus_id);
|
||||
|
||||
if (lu->tgt->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)
|
||||
sdev->fix_capacity = 1;
|
||||
}
|
||||
if (sd->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)
|
||||
|
||||
if (lu->tgt->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)
|
||||
blk_queue_max_sectors(sdev->request_queue, 128 * 1024 / 512);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1129,13 +1223,11 @@ static int sbp2_scsi_slave_configure(struct scsi_device *sdev)
|
||||
*/
|
||||
static int sbp2_scsi_abort(struct scsi_cmnd *cmd)
|
||||
{
|
||||
struct sbp2_device *sd =
|
||||
(struct sbp2_device *)cmd->device->host->hostdata;
|
||||
struct fw_unit *unit = sd->unit;
|
||||
struct sbp2_logical_unit *lu = cmd->device->hostdata;
|
||||
|
||||
fw_notify("sbp2_scsi_abort\n");
|
||||
sbp2_agent_reset(unit);
|
||||
sbp2_cancel_orbs(unit);
|
||||
sbp2_agent_reset(lu);
|
||||
sbp2_cancel_orbs(lu);
|
||||
|
||||
return SUCCESS;
|
||||
}
|
||||
@ -1152,37 +1244,18 @@ sbp2_sysfs_ieee1394_id_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct scsi_device *sdev = to_scsi_device(dev);
|
||||
struct sbp2_device *sd;
|
||||
struct fw_unit *unit;
|
||||
struct sbp2_logical_unit *lu;
|
||||
struct fw_device *device;
|
||||
u32 directory_id;
|
||||
struct fw_csr_iterator ci;
|
||||
int key, value, lun;
|
||||
|
||||
if (!sdev)
|
||||
return 0;
|
||||
sd = (struct sbp2_device *)sdev->host->hostdata;
|
||||
unit = sd->unit;
|
||||
device = fw_device(unit->device.parent);
|
||||
|
||||
/* implicit directory ID */
|
||||
directory_id = ((unit->directory - device->config_rom) * 4
|
||||
+ CSR_CONFIG_ROM) & 0xffffff;
|
||||
|
||||
/* explicit directory ID, overrides implicit ID if present */
|
||||
fw_csr_iterator_init(&ci, unit->directory);
|
||||
while (fw_csr_iterator_next(&ci, &key, &value))
|
||||
if (key == CSR_DIRECTORY_ID) {
|
||||
directory_id = value;
|
||||
break;
|
||||
}
|
||||
|
||||
/* FIXME: Make this work for multi-lun devices. */
|
||||
lun = 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],
|
||||
directory_id, lun);
|
||||
lu->tgt->directory_id, lu->lun);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user