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ieee1394: sbp2: remove superfluous comments 

And update and reformat remaining comments.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2006-11-02 21:16:08 +01:00
parent d19c776414
commit e8ca5668f1
2 changed files with 109 additions and 355 deletions
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384
drivers/ieee1394/sbp2.c
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File diff suppressed because it is too large Load Diff

80
drivers/ieee1394/sbp2.h
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@ -25,7 +25,7 @@
#define SBP2_DEVICE_NAME "sbp2" #define SBP2_DEVICE_NAME "sbp2"
/* /*
* SBP2 specific structures and defines * SBP-2 specific definitions
*/ */
#define ORB_DIRECTION_WRITE_TO_MEDIA 0x0 #define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
@ -185,8 +185,9 @@ struct sbp2_status_block {
u8 command_set_dependent[24]; u8 command_set_dependent[24];
} __attribute__((packed)); } __attribute__((packed));
/* /*
* Miscellaneous SBP2 related config rom defines * SBP2 related configuration ROM definitions
*/ */
#define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1 #define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
@ -207,19 +208,17 @@ struct sbp2_status_block {
#define SBP2_UNSOLICITED_STATUS_VALUE 0xf #define SBP2_UNSOLICITED_STATUS_VALUE 0xf
#define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL #define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
/* biggest possible value for Single Phase Retry count is 0xf */
#define SBP2_BUSY_TIMEOUT_VALUE 0xf #define SBP2_BUSY_TIMEOUT_VALUE 0xf
#define SBP2_AGENT_RESET_DATA 0xf #define SBP2_AGENT_RESET_DATA 0xf
/*
* Unit spec id and sw version entry for SBP-2 devices
*/
#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e #define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
#define SBP2_SW_VERSION_ENTRY 0x00010483 #define SBP2_SW_VERSION_ENTRY 0x00010483
/* /*
* SCSI specific stuff * SCSI specific definitions
*/ */
#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000 #define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
@ -237,18 +236,19 @@ struct sbp2_status_block {
#define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22 #define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff #define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
/* This is the two dma types we use for cmd_dma below */
/*
* Representations of commands and devices
*/
enum cmd_dma_types { enum cmd_dma_types {
CMD_DMA_NONE, CMD_DMA_NONE,
CMD_DMA_PAGE, CMD_DMA_PAGE,
CMD_DMA_SINGLE CMD_DMA_SINGLE
}; };
/* /* Per SCSI command */
* Encapsulates all the info necessary for an outstanding command.
*/
struct sbp2_command_info { struct sbp2_command_info {
struct list_head list; struct list_head list;
struct sbp2_command_orb command_orb ____cacheline_aligned; struct sbp2_command_orb command_orb ____cacheline_aligned;
dma_addr_t command_orb_dma ____cacheline_aligned; dma_addr_t command_orb_dma ____cacheline_aligned;
@ -263,18 +263,17 @@ struct sbp2_command_info {
enum cmd_dma_types dma_type; enum cmd_dma_types dma_type;
unsigned long dma_size; unsigned long dma_size;
int dma_dir; int dma_dir;
}; };
struct sbp2scsi_host_info; /* Per FireWire host */
struct sbp2scsi_host_info {
struct hpsb_host *host;
struct list_head scsi_ids;
};
/* /* Per logical unit */
* Information needed on a per scsi id basis (one for each sbp2 device)
*/
struct scsi_id_instance_data { struct scsi_id_instance_data {
/* /* Operation request blocks */
* Various sbp2 specific structures
*/
struct sbp2_command_orb *last_orb; struct sbp2_command_orb *last_orb;
dma_addr_t last_orb_dma; dma_addr_t last_orb_dma;
struct sbp2_login_orb *login_orb; struct sbp2_login_orb *login_orb;
@ -291,57 +290,49 @@ struct scsi_id_instance_data {
dma_addr_t logout_orb_dma; dma_addr_t logout_orb_dma;
struct sbp2_status_block status_block; struct sbp2_status_block status_block;
/* /* How to talk to the unit */
* Stuff we need to know about the sbp2 device itself
*/
u64 sbp2_management_agent_addr; u64 sbp2_management_agent_addr;
u64 sbp2_command_block_agent_addr; u64 sbp2_command_block_agent_addr;
u32 speed_code; u32 speed_code;
u32 max_payload_size; u32 max_payload_size;
/* /* Pulled from the device's unit directory */
* Values pulled from the device's unit directory
*/
u32 sbp2_command_set_spec_id; u32 sbp2_command_set_spec_id;
u32 sbp2_command_set; u32 sbp2_command_set;
u32 sbp2_unit_characteristics; u32 sbp2_unit_characteristics;
u32 sbp2_lun; u32 sbp2_lun;
u32 sbp2_firmware_revision; u32 sbp2_firmware_revision;
/* /* Address for the unit to write status blocks to */
* Address for the device to write status blocks to
*/
u64 status_fifo_addr; u64 status_fifo_addr;
/* /* Waitqueue flag for logins, reconnects, logouts, query logins */
* Waitqueue flag for logins, reconnects, logouts, query logins
*/
int access_complete:1; int access_complete:1;
/* /* Pool of command ORBs for this logical unit */
* Pool of command orbs, so we can have more than overlapped command per id
*/
spinlock_t sbp2_command_orb_lock; spinlock_t sbp2_command_orb_lock;
struct list_head sbp2_command_orb_inuse; struct list_head sbp2_command_orb_inuse;
struct list_head sbp2_command_orb_completed; struct list_head sbp2_command_orb_completed;
/* Backlink to FireWire host; list of units attached to the host */
struct sbp2scsi_host_info *hi;
struct list_head scsi_list; struct list_head scsi_list;
/* Node entry, as retrieved from NodeMgr entries */ /* IEEE 1394 core's device representations */
struct node_entry *ne; struct node_entry *ne;
struct unit_directory *ud; struct unit_directory *ud;
/* A backlink to our host_info */ /* SCSI core's device representations */
struct sbp2scsi_host_info *hi;
/* SCSI related pointers */
struct scsi_device *sdev; struct scsi_device *sdev;
struct Scsi_Host *scsi_host; struct Scsi_Host *scsi_host;
/* Device specific workarounds/brokeness */ /* Device specific workarounds/brokeness */
unsigned workarounds; unsigned workarounds;
/* Connection state */
atomic_t state; atomic_t state;
/* For deferred requests to the fetch agent */
struct work_struct protocol_work; struct work_struct protocol_work;
}; };
@ -352,13 +343,8 @@ enum sbp2lu_state_types {
SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */ SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */
}; };
/* Sbp2 host data structure (one per IEEE1394 host) */ /* For use in scsi_id_instance_data.workarounds and in the corresponding
struct sbp2scsi_host_info { * module load parameter */
struct hpsb_host *host; /* IEEE1394 host */
struct list_head scsi_ids; /* List of scsi ids on this host */
};
/* Flags for detected oddities and brokeness */
#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1 #define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
#define SBP2_WORKAROUND_INQUIRY_36 0x2 #define SBP2_WORKAROUND_INQUIRY_36 0x2
#define SBP2_WORKAROUND_MODE_SENSE_8 0x4 #define SBP2_WORKAROUND_MODE_SENSE_8 0x4