diff options
Diffstat (limited to 'drivers/scsi/hosts.h')
| -rw-r--r-- | drivers/scsi/hosts.h | 65 |
1 files changed, 58 insertions, 7 deletions
diff --git a/drivers/scsi/hosts.h b/drivers/scsi/hosts.h index 26b4e1c9f..01b5f29c1 100644 --- a/drivers/scsi/hosts.h +++ b/drivers/scsi/hosts.h @@ -228,8 +228,6 @@ typedef struct SHT be two Scsi_Host entries, but only 1 Scsi_Host_Template entries. */ -#define SCSI_HOST_BLOCK 0x800 - struct Scsi_Host { struct Scsi_Host * next; @@ -245,25 +243,36 @@ struct Scsi_Host that should be locked out of performing I/O while we have an active command on this host. */ struct Scsi_Host * block; + unsigned wish_block:1; /* These parameters should be set by the detect routine */ unsigned char *base; - short unsigned int io_port; + unsigned int io_port; unsigned char n_io_port; unsigned char irq; unsigned char dma_channel; + + /* + Set these if there are conflicts between memory + in the < 1mb region and regions at 16mb multiples. + The address must be on a page boundary. + */ + unsigned long forbidden_addr; + unsigned long forbidden_size; + /* The rest can be copied from the template, or specifically initialized, as required. - */ + */ int this_id; int can_queue; + short cmd_per_lun; short unsigned int sg_tablesize; unsigned unchecked_isa_dma:1; /* True if this host was loaded as a loadable module - */ + */ unsigned loaded_as_module:1; int hostdata[0]; /* Used for storage of host specific stuff */ @@ -284,14 +293,18 @@ extern Scsi_Host_Template * scsi_hosts; looks normal. Also, it makes it possible to use the same code for a loadable module. */ -extern void * scsi_init_malloc(unsigned int size); +extern void * scsi_init_malloc(unsigned int size, int priority); extern void scsi_init_free(char * ptr, unsigned int size); +void scan_scsis (struct Scsi_Host * shpnt); + +extern int next_scsi_host; extern int scsi_loadable_module_flag; unsigned int scsi_init(void); extern struct Scsi_Host * scsi_register(Scsi_Host_Template *, int j); extern void scsi_unregister(struct Scsi_Host * i); +extern int scsicam_bios_param (Disk *, int, int *); #define BLANK_HOST {"", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} @@ -309,7 +322,7 @@ struct Scsi_Device_Template int (*detect)(Scsi_Device *); /* Returns 1 if we can attach this device */ void (*init)(void); /* Sizes arrays based upon number of devices detected */ void (*finish)(void); /* Perform initialization after attachment */ - void (*attach)(Scsi_Device *); /* Attach devices to arrays */ + int (*attach)(Scsi_Device *); /* Attach devices to arrays */ void (*detach)(Scsi_Device *); }; @@ -320,4 +333,42 @@ extern struct Scsi_Device_Template sg_template; int scsi_register_device(struct Scsi_Device_Template * sdpnt); +/* These are used by loadable modules */ +extern int scsi_register_module(int, void *); +extern void scsi_unregister_module(int, void *); + +/* The different types of modules that we can load and unload */ +#define MODULE_SCSI_HA 1 +#define MODULE_SCSI_CONST 2 +#define MODULE_SCSI_IOCTL 3 +#define MODULE_SCSI_DEV 4 + + +/* + * This is an ugly hack. If we expect to be able to load devices at run time, we need + * to leave extra room in some of the data structures. Doing a realloc to enlarge + * the structures would be riddled with race conditions, so until a better solution + * is discovered, we use this crude approach + */ +#define SD_EXTRA_DEVS 2 +#define ST_EXTRA_DEVS 2 +#define SR_EXTRA_DEVS 2 +#define SG_EXTRA_DEVS (SD_EXTRA_DEVS + SR_EXTRA_DEVS + ST_EXTRA_DEVS) + #endif +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-indent-level: 8 + * c-brace-imaginary-offset: 0 + * c-brace-offset: -8 + * c-argdecl-indent: 8 + * c-label-offset: -8 + * c-continued-statement-offset: 8 + * c-continued-brace-offset: 0 + * End: + */ |