/* SPDX-License-Identifier: GPL-2.0 */ /* Driver for the PPA3 parallel port SCSI HBA embedded in * the Iomega ZIP drive * * (c) 1996 Grant R. Guenther [email protected] * David Campbell * * All comments to David. */ #ifndef _PPA_H #define _PPA_H #define PPA_VERSION … /* * this driver has been hacked by Matteo Frigo ([email protected]) * 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 <[email protected]> and * Tim Waugh <[email protected]> * [2.04] * * Fix kernel panic on scsi timeout, 2000-08-18 [2.05] * * Avoid io_request_lock problems. * John Cavan <[email protected]> [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 <[email protected]> and * Oleg Makarenko <[email protected]> * [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 … #define PPA_NIBBLE … #define PPA_PS2 … #define PPA_EPP_8 … #define PPA_EPP_16 … #define PPA_EPP_32 … #define PPA_UNKNOWN … static char *PPA_MODE_STRING[] = …; /* other options */ #define PPA_BURST_SIZE … #define PPA_SELECT_TMO … #define PPA_SPIN_TMO … #define PPA_RECON_TMO … #define PPA_DEBUG … #define IN_EPP_MODE(x) … /* args to ppa_connect */ #define CONNECT_EPP_MAYBE … #define CONNECT_NORMAL … #define r_dtr(x) … #define r_str(x) … #define r_ctr(x) … #define r_epp(x) … #define r_fifo(x) … /* On PCI is base+0x400 != base_hi */ #define r_ecr(x) … #define w_dtr(x,y) … #define w_str(x,y) … #define w_epp(x,y) … #define w_fifo(x,y) … #define w_ecr(x,y) … #ifdef CONFIG_SCSI_IZIP_SLOW_CTR #define w_ctr(x,y) … #else #define w_ctr … #endif static int ppa_engine(ppa_struct *, struct scsi_cmnd *); #endif /* _PPA_H */
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