diff options
Diffstat (limited to 'ANDROID_3.4.5/include/scsi/scsi_cmnd.h')
| -rw-r--r-- | ANDROID_3.4.5/include/scsi/scsi_cmnd.h | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/ANDROID_3.4.5/include/scsi/scsi_cmnd.h b/ANDROID_3.4.5/include/scsi/scsi_cmnd.h deleted file mode 100644 index ac06cc59..00000000 --- a/ANDROID_3.4.5/include/scsi/scsi_cmnd.h +++ /dev/null @@ -1,320 +0,0 @@ -#ifndef _SCSI_SCSI_CMND_H -#define _SCSI_SCSI_CMND_H - -#include <linux/dma-mapping.h> -#include <linux/blkdev.h> -#include <linux/list.h> -#include <linux/types.h> -#include <linux/timer.h> -#include <linux/scatterlist.h> - -struct Scsi_Host; -struct scsi_device; -struct scsi_driver; - -/* - * MAX_COMMAND_SIZE is: - * The longest fixed-length SCSI CDB as per the SCSI standard. - * fixed-length means: commands that their size can be determined - * by their opcode and the CDB does not carry a length specifier, (unlike - * the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly - * true and the SCSI standard also defines extended commands and - * vendor specific commands that can be bigger than 16 bytes. The kernel - * will support these using the same infrastructure used for VARLEN CDB's. - * So in effect MAX_COMMAND_SIZE means the maximum size command scsi-ml - * supports without specifying a cmd_len by ULD's - */ -#define MAX_COMMAND_SIZE 16 -#if (MAX_COMMAND_SIZE > BLK_MAX_CDB) -# error MAX_COMMAND_SIZE can not be bigger than BLK_MAX_CDB -#endif - -struct scsi_data_buffer { - struct sg_table table; - unsigned length; - int resid; -}; - -/* embedded in scsi_cmnd */ -struct scsi_pointer { - char *ptr; /* data pointer */ - int this_residual; /* left in this buffer */ - struct scatterlist *buffer; /* which buffer */ - int buffers_residual; /* how many buffers left */ - - dma_addr_t dma_handle; - - volatile int Status; - volatile int Message; - volatile int have_data_in; - volatile int sent_command; - volatile int phase; -}; - -struct scsi_cmnd { - struct scsi_device *device; - struct list_head list; /* scsi_cmnd participates in queue lists */ - struct list_head eh_entry; /* entry for the host eh_cmd_q */ - int eh_eflags; /* Used by error handlr */ - - /* - * A SCSI Command is assigned a nonzero serial_number before passed - * to the driver's queue command function. The serial_number is - * cleared when scsi_done is entered indicating that the command - * has been completed. It is a bug for LLDDs to use this number - * for purposes other than printk (and even that is only useful - * for debugging). - */ - unsigned long serial_number; - - /* - * This is set to jiffies as it was when the command was first - * allocated. It is used to time how long the command has - * been outstanding - */ - unsigned long jiffies_at_alloc; - - int retries; - int allowed; - - unsigned char prot_op; - unsigned char prot_type; - - unsigned short cmd_len; - enum dma_data_direction sc_data_direction; - - /* These elements define the operation we are about to perform */ - unsigned char *cmnd; - - - /* These elements define the operation we ultimately want to perform */ - struct scsi_data_buffer sdb; - struct scsi_data_buffer *prot_sdb; - - unsigned underflow; /* Return error if less than - this amount is transferred */ - - unsigned transfersize; /* How much we are guaranteed to - transfer with each SCSI transfer - (ie, between disconnect / - reconnects. Probably == sector - size */ - - struct request *request; /* The command we are - working on */ - -#define SCSI_SENSE_BUFFERSIZE 96 - unsigned char *sense_buffer; - /* obtained by REQUEST SENSE when - * CHECK CONDITION is received on original - * command (auto-sense) */ - - /* Low-level done function - can be used by low-level driver to point - * to completion function. Not used by mid/upper level code. */ - void (*scsi_done) (struct scsi_cmnd *); - - /* - * The following fields can be written to by the host specific code. - * Everything else should be left alone. - */ - struct scsi_pointer SCp; /* Scratchpad used by some host adapters */ - - unsigned char *host_scribble; /* The host adapter is allowed to - * call scsi_malloc and get some memory - * and hang it here. The host adapter - * is also expected to call scsi_free - * to release this memory. (The memory - * obtained by scsi_malloc is guaranteed - * to be at an address < 16Mb). */ - - int result; /* Status code from lower level driver */ - - unsigned char tag; /* SCSI-II queued command tag */ -}; - -static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd) -{ - struct scsi_driver **sdp; - - if (!cmd->request->rq_disk) - return NULL; - - sdp = (struct scsi_driver **)cmd->request->rq_disk->private_data; - if (!sdp) - return NULL; - - return *sdp; -} - -extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t); -extern struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *, gfp_t); -extern void scsi_put_command(struct scsi_cmnd *); -extern void __scsi_put_command(struct Scsi_Host *, struct scsi_cmnd *, - struct device *); -extern void scsi_finish_command(struct scsi_cmnd *cmd); - -extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count, - size_t *offset, size_t *len); -extern void scsi_kunmap_atomic_sg(void *virt); - -extern int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask); -extern void scsi_release_buffers(struct scsi_cmnd *cmd); - -extern int scsi_dma_map(struct scsi_cmnd *cmd); -extern void scsi_dma_unmap(struct scsi_cmnd *cmd); - -struct scsi_cmnd *scsi_allocate_command(gfp_t gfp_mask); -void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd); - -static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd) -{ - return cmd->sdb.table.nents; -} - -static inline struct scatterlist *scsi_sglist(struct scsi_cmnd *cmd) -{ - return cmd->sdb.table.sgl; -} - -static inline unsigned scsi_bufflen(struct scsi_cmnd *cmd) -{ - return cmd->sdb.length; -} - -static inline void scsi_set_resid(struct scsi_cmnd *cmd, int resid) -{ - cmd->sdb.resid = resid; -} - -static inline int scsi_get_resid(struct scsi_cmnd *cmd) -{ - return cmd->sdb.resid; -} - -#define scsi_for_each_sg(cmd, sg, nseg, __i) \ - for_each_sg(scsi_sglist(cmd), sg, nseg, __i) - -static inline int scsi_bidi_cmnd(struct scsi_cmnd *cmd) -{ - return blk_bidi_rq(cmd->request) && - (cmd->request->next_rq->special != NULL); -} - -static inline struct scsi_data_buffer *scsi_in(struct scsi_cmnd *cmd) -{ - return scsi_bidi_cmnd(cmd) ? - cmd->request->next_rq->special : &cmd->sdb; -} - -static inline struct scsi_data_buffer *scsi_out(struct scsi_cmnd *cmd) -{ - return &cmd->sdb; -} - -static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd, - void *buf, int buflen) -{ - return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), - buf, buflen); -} - -static inline int scsi_sg_copy_to_buffer(struct scsi_cmnd *cmd, - void *buf, int buflen) -{ - return sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), - buf, buflen); -} - -/* - * The operations below are hints that tell the controller driver how - * to handle I/Os with DIF or similar types of protection information. - */ -enum scsi_prot_operations { - /* Normal I/O */ - SCSI_PROT_NORMAL = 0, - - /* OS-HBA: Protected, HBA-Target: Unprotected */ - SCSI_PROT_READ_INSERT, - SCSI_PROT_WRITE_STRIP, - - /* OS-HBA: Unprotected, HBA-Target: Protected */ - SCSI_PROT_READ_STRIP, - SCSI_PROT_WRITE_INSERT, - - /* OS-HBA: Protected, HBA-Target: Protected */ - SCSI_PROT_READ_PASS, - SCSI_PROT_WRITE_PASS, -}; - -static inline void scsi_set_prot_op(struct scsi_cmnd *scmd, unsigned char op) -{ - scmd->prot_op = op; -} - -static inline unsigned char scsi_get_prot_op(struct scsi_cmnd *scmd) -{ - return scmd->prot_op; -} - -/* - * The controller usually does not know anything about the target it - * is communicating with. However, when DIX is enabled the controller - * must be know target type so it can verify the protection - * information passed along with the I/O. - */ -enum scsi_prot_target_type { - SCSI_PROT_DIF_TYPE0 = 0, - SCSI_PROT_DIF_TYPE1, - SCSI_PROT_DIF_TYPE2, - SCSI_PROT_DIF_TYPE3, -}; - -static inline void scsi_set_prot_type(struct scsi_cmnd *scmd, unsigned char type) -{ - scmd->prot_type = type; -} - -static inline unsigned char scsi_get_prot_type(struct scsi_cmnd *scmd) -{ - return scmd->prot_type; -} - -static inline sector_t scsi_get_lba(struct scsi_cmnd *scmd) -{ - return blk_rq_pos(scmd->request); -} - -static inline unsigned scsi_prot_sg_count(struct scsi_cmnd *cmd) -{ - return cmd->prot_sdb ? cmd->prot_sdb->table.nents : 0; -} - -static inline struct scatterlist *scsi_prot_sglist(struct scsi_cmnd *cmd) -{ - return cmd->prot_sdb ? cmd->prot_sdb->table.sgl : NULL; -} - -static inline struct scsi_data_buffer *scsi_prot(struct scsi_cmnd *cmd) -{ - return cmd->prot_sdb; -} - -#define scsi_for_each_prot_sg(cmd, sg, nseg, __i) \ - for_each_sg(scsi_prot_sglist(cmd), sg, nseg, __i) - -static inline void set_msg_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0xffff00ff) | (status << 8); -} - -static inline void set_host_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0xff00ffff) | (status << 16); -} - -static inline void set_driver_byte(struct scsi_cmnd *cmd, char status) -{ - cmd->result = (cmd->result & 0x00ffffff) | (status << 24); -} - -#endif /* _SCSI_SCSI_CMND_H */ |