| /* Driver for the PPA3 parallel port SCSI HBA embedded in | |
| * the Iomega ZIP drive | |
| * | |
| * (c) 1996 Grant R. Guenther grant@torque.net | |
| * David Campbell | |
| * | |
| * All comments to David. | |
| */ | |
| #ifndef _PPA_H | |
| #define _PPA_H | |
| #define PPA_VERSION "2.07 (for Linux 2.4.x)" | |
| /* | |
| * this driver has been hacked by Matteo Frigo (athena@theory.lcs.mit.edu) | |
| * to support EPP and scatter-gather. [0.26-athena] | |
| * | |
| * additional hacks by David Campbell | |
| * in response to this driver "mis-behaving" on his machine. | |
| * Fixed EPP to handle "software" changing of EPP port data direction. | |
| * Chased down EPP timeouts | |
| * Made this driver "kernel version friendly" [0.28-athena] | |
| * | |
| * [ Stuff removed ] | |
| * | |
| * Corrected ppa.h for 2.1.x kernels (>=2.1.85) | |
| * Modified "Nat Semi Kludge" for extended chipsets | |
| * [1.41] | |
| * | |
| * Fixed id_probe for EPP 1.9 chipsets (misdetected as EPP 1.7) | |
| * [1.42] | |
| * | |
| * Development solely for 2.1.x kernels from now on! | |
| * [2.00] | |
| * | |
| * Hack and slash at the init code (EPP device check routine) | |
| * Added INSANE option. | |
| * [2.01] | |
| * | |
| * Patch applied to sync against the 2.1.x kernel code | |
| * Included qboot_zip.sh | |
| * [2.02] | |
| * | |
| * Cleaned up the mess left by someone else trying to fix the | |
| * asm section to keep egcc happy. The asm section no longer | |
| * exists, the nibble code is *almost* as fast as the asm code | |
| * providing it is compiled with egcc. | |
| * | |
| * Other clean ups include the follow changes: | |
| * CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP16 | |
| * added CONFIG_SCSI_IZIP_SLOW_CTR option | |
| * [2.03] | |
| * | |
| * Use ppa_wait() to check for ready AND connected status bits | |
| * Add ppa_wait() calls to ppa_completion() | |
| * by Peter Cherriman <pjc@ecs.soton.ac.uk> and | |
| * Tim Waugh <twaugh@redhat.com> | |
| * [2.04] | |
| * | |
| * Fix kernel panic on scsi timeout, 2000-08-18 [2.05] | |
| * | |
| * Avoid io_request_lock problems. | |
| * John Cavan <johncavan@home.com> [2.06] | |
| * | |
| * Busy wait for connected status bit in ppa_completion() | |
| * in order to cope with some hardware that has this bit low | |
| * for short periods of time. | |
| * Add udelay() to ppa_select() | |
| * by Peter Cherriman <pjc@ecs.soton.ac.uk> and | |
| * Oleg Makarenko <omakarenko@cyberplat.ru> | |
| * [2.07] | |
| */ | |
| /* ------ END OF USER CONFIGURABLE PARAMETERS ----- */ | |
| #include <linux/stddef.h> | |
| #include <linux/module.h> | |
| #include <linux/kernel.h> | |
| #include <linux/ioport.h> | |
| #include <linux/delay.h> | |
| #include <linux/proc_fs.h> | |
| #include <linux/stat.h> | |
| #include <linux/blkdev.h> | |
| #include <linux/sched.h> | |
| #include <linux/interrupt.h> | |
| #include <asm/io.h> | |
| #include <scsi/scsi_host.h> | |
| /* batteries not included :-) */ | |
| /* | |
| * modes in which the driver can operate | |
| */ | |
| #define PPA_AUTODETECT 0 /* Autodetect mode */ | |
| #define PPA_NIBBLE 1 /* work in standard 4 bit mode */ | |
| #define PPA_PS2 2 /* PS/2 byte mode */ | |
| #define PPA_EPP_8 3 /* EPP mode, 8 bit */ | |
| #define PPA_EPP_16 4 /* EPP mode, 16 bit */ | |
| #define PPA_EPP_32 5 /* EPP mode, 32 bit */ | |
| #define PPA_UNKNOWN 6 /* Just in case... */ | |
| static char *PPA_MODE_STRING[] = | |
| { | |
| "Autodetect", | |
| "SPP", | |
| "PS/2", | |
| "EPP 8 bit", | |
| "EPP 16 bit", | |
| #ifdef CONFIG_SCSI_IZIP_EPP16 | |
| "EPP 16 bit", | |
| #else | |
| "EPP 32 bit", | |
| #endif | |
| "Unknown"}; | |
| /* other options */ | |
| #define PPA_BURST_SIZE 512 /* data burst size */ | |
| #define PPA_SELECT_TMO 5000 /* how long to wait for target ? */ | |
| #define PPA_SPIN_TMO 50000 /* ppa_wait loop limiter */ | |
| #define PPA_RECON_TMO 500 /* scsi reconnection loop limiter */ | |
| #define PPA_DEBUG 0 /* debugging option */ | |
| #define IN_EPP_MODE(x) (x == PPA_EPP_8 || x == PPA_EPP_16 || x == PPA_EPP_32) | |
| /* args to ppa_connect */ | |
| #define CONNECT_EPP_MAYBE 1 | |
| #define CONNECT_NORMAL 0 | |
| #define r_dtr(x) (unsigned char)inb((x)) | |
| #define r_str(x) (unsigned char)inb((x)+1) | |
| #define r_ctr(x) (unsigned char)inb((x)+2) | |
| #define r_epp(x) (unsigned char)inb((x)+4) | |
| #define r_fifo(x) (unsigned char)inb((x)) /* x must be base_hi */ | |
| /* On PCI is base+0x400 != base_hi */ | |
| #define r_ecr(x) (unsigned char)inb((x)+0x2) /* x must be base_hi */ | |
| #define w_dtr(x,y) outb(y, (x)) | |
| #define w_str(x,y) outb(y, (x)+1) | |
| #define w_epp(x,y) outb(y, (x)+4) | |
| #define w_fifo(x,y) outb(y, (x)) /* x must be base_hi */ | |
| #define w_ecr(x,y) outb(y, (x)+0x2)/* x must be base_hi */ | |
| #ifdef CONFIG_SCSI_IZIP_SLOW_CTR | |
| #define w_ctr(x,y) outb_p(y, (x)+2) | |
| #else | |
| #define w_ctr(x,y) outb(y, (x)+2) | |
| #endif | |
| static int ppa_engine(ppa_struct *, struct scsi_cmnd *); | |
| #endif /* _PPA_H */ |