Resent-Date: Thu, 28 Jan 1999 19:20:18 +0100 (MET) Date: Thu, 28 Jan 1999 19:18:08 +0100 From: Kars de Jong To: Andreas Schmitz Cc: linux-m68k@lists.linux-m68k.org Subject: Re: Oktagon patch (NCR53C9x) Mail-Followup-To: Andreas Schmitz , linux-m68k@lists.linux-m68k.org References: <2rsyYMD46BaUz1@otter.chessy.aworld.de> In-Reply-To: <2rsyYMD46BaUz1@otter.chessy.aworld.de>; from Andreas Schmitz on Wed, Jan 27, 1999 at 07:21:44AM +0000 Resent-From: linux-m68k@phil.uni-sb.de On Wed, Jan 27, 1999 at 07:21:44AM +0000, Andreas Schmitz wrote: > PS: Why has the outb macro arguments changed relatively to x86? I think this is my fault, I accidentally reversed them in NCR53C9x.h. So they haven't changed. Anyway, here is the Oktagon diff the way I like it. This means that it uses esp_read()/esp_write() now. I also fixed some compiler warnings for oktagon_esp.c, and made it work as a module. This diff replaces the one sent by Andreas. I have a problem though: What if people have one ESP based SCSI adapter compiled into the kernel, and another one as a module? You can configure the kernel like this, but it goes weird when compiling. First NCR53C9x.c is compiled into the kernel, and then during "make modules" it is recompiled as a module, and installed. The modular ESP driver then loads the NCR53C9x.c module, even when it is already built into the kernel! This gives weird problems, with the /proc filesystem for instance. When NCR53C9x is built into the kernel, the modular host adapter should use the NCR53C9x built into the kernel, in this case there shouldn't even be a NCR53C9x module. Does anyone have some clever ideas I could use in the Makefile or something? Kars. -- ------------------------------------------------------------------------------ Kars de Jong Signaalkamp rules the waves! Turrican@Discworld --------======]**-----| jongk@cs.utwente.nl |-----**[======--------- Index: arch/m68k/config.in =================================================================== RCS file: /usr/src/CVS/linux/arch/m68k/config.in,v retrieving revision 1.2 diff -u -r1.2 config.in --- config.in 1999/01/18 19:38:07 1.2 +++ config.in 1999/01/28 15:11:22 @@ -147,6 +147,7 @@ bool 'A4091 SCSI support' CONFIG_A4091_SCSI bool 'WarpEngine SCSI support' CONFIG_WARPENGINE_SCSI bool 'Blizzard PowerUP 603e+ SCSI' CONFIG_BLZ603EPLUS_SCSI + dep_tristate 'BSC Oktagon SCSI support' CONFIG_OKTAGON_SCSI $CONFIG_SCSI # bool 'Cyberstorm Mk III SCSI support' CONFIG_CYBERSTORMIII_SCSI # bool 'GVP Turbo 040/060 SCSI support' CONFIG_GVP_TURBO_SCSI fi Index: drivers/scsi/Makefile =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/Makefile,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 Makefile --- Makefile 1999/01/18 16:20:45 1.1.1.1 +++ Makefile 1999/01/28 14:09:56 @@ -18,7 +18,10 @@ CFLAGS_seagate.o = -DARBITRATE -DPARITY -DSEAGATE_USE_ASM .SUFFIXES: -.SUFFIXES: .c .o .h .a +.SUFFIXES: .c .o .h .a .S + +.S.o: + $(CC) -D__ASSEMBLY__ -c $< -o $*.o ifeq (${CFLAGS},) CFLAGS = -D__KERNEL__=1 \ @@ -254,6 +257,14 @@ else ifeq ($(CONFIG_FASTLANE_SCSI),m) M_OBJS += NCR53C9x.o fastlane.o + endif +endif + +ifeq ($(CONFIG_OKTAGON_SCSI),y) +L_OBJS += NCR53C9x.o oktagon_esp.o oktagon_io.o +else + ifeq ($(CONFIG_OKTAGON_SCSI),m) + M_OBJS += NCR53C9x.o oktagon_esp.o oktagon_io.o endif endif Index: drivers/scsi/NCR53C9x.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/NCR53C9x.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 NCR53C9x.c --- NCR53C9x.c 1999/01/18 16:21:03 1.1.1.1 +++ NCR53C9x.c 1999/01/28 17:52:24 @@ -6,6 +6,9 @@ * * Most DMA dependencies put in driver specific files by * Jesper Skov (jskov@cygnus.co.uk) + * + * Set up to use esp_read/esp_write (preprocessor macros in NCR53c9x.h) by + * Tymm Twillman (tymm@coe.missouri.edu) */ /* TODO: @@ -508,7 +511,7 @@ } /* This places the ESP into a known state at boot time. */ -static void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs) +void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs) { volatile unchar trash; @@ -547,6 +550,9 @@ esp->edev = esp_dev; esp->esp_id = nesps++; + /* Set bitshift value (only used on Amiga with multiple ESPs) */ + esp->shift = 2; + /* Put into the chain of esp chips detected */ if(espchain) { elink = espchain; @@ -560,6 +566,20 @@ return esp; } +void esp_deallocate(struct NCR_ESP *esp) +{ + struct NCR_ESP *elink; + + if(espchain == esp) { + espchain = 0; + } else { + for(elink = espchain; elink && (elink->next != esp); elink = elink->next); + if(elink) + elink->next = esp->next; + } + nesps--; +} + /* Complete initialization of ESP structure and device * Caller must have initialized appropriate parts of the ESP structure * between the call to esp_allocate and this function. @@ -1794,7 +1814,7 @@ int oldphase, i = 0; /* or where we left off last time ?? esp->current_data ?? */ int fifocnt = 0; - oldphase = eregs->esp_status & ESP_STAT_PMASK; + oldphase = esp_read(eregs->esp_status) & ESP_STAT_PMASK; /* * polled transfer; ugly, can we make this happen in a DRQ @@ -3395,7 +3415,7 @@ esp->sreg = esp_read(eregs->esp_status); esp->sreg &= (~ESP_STAT_INTR); esp->seqreg = (esp_read(eregs->esp_sstep) & ESP_STEP_VBITS); - esp->ireg = eregs->esp_intrpt; /* Unlatch intr and stat regs */ + esp->ireg = esp_read(eregs->esp_intrpt); /* Unlatch intr and stat regs */ ESPIRQ(("handle_irq: [sreg<%02x> sstep<%02x> ireg<%02x>]\n", esp->sreg, esp->seqreg, esp->ireg)); if(esp->sreg & (ESP_STAT_SPAM)) { @@ -3596,5 +3616,7 @@ void esp_release(void) { MOD_DEC_USE_COUNT; + esps_in_use--; + esps_running = esps_in_use; } #endif Index: drivers/scsi/NCR53C9x.h =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/NCR53C9x.h,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 NCR53C9x.h --- NCR53C9x.h 1999/01/18 16:21:03 1.1.1.1 +++ NCR53C9x.h 1999/01/28 17:54:31 @@ -6,6 +6,8 @@ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) * * Generalization by Jesper Skov (jskov@cygnus.co.uk) + * + * More generalization (for i386 stuff) by Tymm Twillman (tymm@computer.org) */ #ifndef NCR53C9X_H @@ -20,6 +22,22 @@ #define PAD_SIZE 3 #endif +/* Handle multiple hostadapters on Amiga + * generally PAD_SIZE = 3 + * but there is one exception: Oktagon (PAD_SIZE = 1) */ +#if defined(CONFIG_OKTAGON_SCSI) || defined(CONFIG_OKTAGON_SCSI_MODULE) +#undef PAD_SIZE +#if defined(CONFIG_BLZ1230_SCSI) || defined(CONFIG_BLZ1230_SCSI_MODULE) || \ + defined(CONFIG_BLZ2060_SCSI) || defined(CONFIG_BLZ2060_SCSI_MODULE) || \ + defined(CONFIG_CYBERSTORM_SCSI) || defined(CONFIG_CYBERSTORM_SCSI_MODULE) || \ + defined(CONFIG_CYBERSTORMII_SCSI) || defined(CONFIG_CYBERSTORMII_SCSI_MODULE) || \ + defined(CONFIG_FASTLANE_SCSI) || defined(CONFIG_FASTLANE_SCSI_MODULE) +#define MULTIPLE_PAD_SIZES +#else +#define PAD_SIZE 1 +#endif +#endif + /* Macros for debugging messages */ #define DEBUG_ESP @@ -107,8 +125,10 @@ #ifdef CONFIG_JAZZ_ESP #define EREGS_PAD(n) #else +#ifndef MULTIPLE_PAD_SIZES #define EREGS_PAD(n) unchar n[PAD_SIZE]; #endif +#endif /* The ESP SCSI controllers have their register sets in three * "classes": @@ -120,12 +140,10 @@ * Yet, they all live within the same IO space. */ -/* All the ESP registers are one byte each and are accessed longwords - * apart with a big-endian ordering to the bytes. - */ - #ifndef __i386__ +#ifndef MULTIPLE_PAD_SIZES + #define esp_write(__reg, __val) ((__reg) = (__val)) #define esp_read(__reg) (__reg) @@ -172,14 +190,51 @@ volatile unchar esp_fgrnd; /* rw Data base for fifo 0x3c */ }; +#else /* MULTIPLE_PAD_SIZES */ + +#define esp_write(__reg, __val) (*(__reg) = (__val)) +#define esp_read(__reg) (*(__reg)) + +struct ESP_regs { + unsigned char io_addr[64]; /* dummy */ + /* Access Description Offset */ +#define esp_tclow io_addr /* rw Low bits of the transfer count 0x00 */ +#define esp_tcmed io_addr + (1<<(esp->shift)) /* rw Mid bits of the transfer count 0x04 */ +#define esp_fdata io_addr + (2<<(esp->shift)) /* rw FIFO data bits 0x08 */ +#define esp_cmnd io_addr + (3<<(esp->shift)) /* rw SCSI command bits 0x0c */ +#define esp_status io_addr + (4<<(esp->shift)) /* ro ESP status register 0x10 */ +#define esp_busid esp_status /* wo Bus ID for select/reselect 0x10 */ +#define esp_intrpt io_addr + (5<<(esp->shift)) /* ro Kind of interrupt 0x14 */ +#define esp_timeo esp_intrpt /* wo Timeout value for select/resel 0x14 */ +#define esp_sstep io_addr + (6<<(esp->shift)) /* ro Sequence step register 0x18 */ +#define esp_stp esp_sstep /* wo Transfer period per sync 0x18 */ +#define esp_fflags io_addr + (7<<(esp->shift)) /* ro Bits of current FIFO info 0x1c */ +#define esp_soff esp_fflags /* wo Sync offset 0x1c */ +#define esp_cfg1 io_addr + (8<<(esp->shift)) /* rw First configuration register 0x20 */ +#define esp_cfact io_addr + (9<<(esp->shift)) /* wo Clock conversion factor 0x24 */ +#define esp_ctest io_addr + (10<<(esp->shift)) /* wo Chip test register 0x28 */ +#define esp_cfg2 io_addr + (11<<(esp->shift)) /* rw Second configuration register 0x2c */ + + /* The following is only found on the 53C9X series SCSI chips */ +#define esp_cfg3 io_addr + (12<<(esp->shift)) /* rw Third configuration register 0x30 */ +#define esp_cfg4 io_addr + (13<<(esp->shift)) /* rw Fourth configuration register 0x34 */ + + /* The following is found on all chips except the NCR53C90 (ESP100) */ +#define esp_tchi io_addr + (14<<(esp->shift)) /* rw High bits of transfer count 0x38 */ +#define esp_uid esp_tchi /* ro Unique ID code 0x38 */ +#define esp_fgrnd io_addr + (15<<(esp->shift)) /* rw Data base for fifo 0x3c */ +}; + +#endif + #else /* !defined __i386__ */ -#define esp_write(__reg, __val) outb((__reg), (__val)) +#define esp_write(__reg, __val) outb((__val), (__reg)) #define esp_read(__reg) inb((__reg)) struct ESP_regs { unsigned int io_addr; - /* Access Description Offset */ + /* Access Description Offset */ #define esp_tclow io_addr /* rw Low bits of the transfer count 0x00 */ #define esp_tcmed io_addr + 1 /* rw Mid bits of the transfer count 0x04 */ #define esp_fdata io_addr + 2 /* rw FIFO data bits 0x08 */ @@ -339,6 +394,9 @@ unchar do_pio_cmds; /* Do command transfer with pio */ + /* How much bits do we have to shift the registers */ + unsigned char shift; + /* Functions handling DMA */ /* Required functions */ @@ -581,6 +639,7 @@ extern inline void esp_cmd(struct NCR_ESP *esp, struct ESP_regs *eregs, unchar cmd); extern struct NCR_ESP *esp_allocate(Scsi_Host_Template *, void *); +extern void esp_deallocate(struct NCR_ESP *); extern void esp_release(void); extern void esp_initialize(struct NCR_ESP *); extern void esp_intr(int, void *, struct pt_regs *); Index: drivers/scsi/blz1230.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/blz1230.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 blz1230.c --- blz1230.c 1999/01/18 16:21:03 1.1.1.1 +++ blz1230.c 1999/01/28 17:50:50 @@ -82,12 +82,15 @@ eregs = (struct ESP_regs *)(address + BLZ1230II_ESP_ADDR); #endif - eregs->esp_cfg1 = (ESP_CONFIG1_PENABLE | 7); + esp = esp_allocate(tpnt, (void *) esp_dev); + + esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7)); udelay(5); - if(eregs->esp_cfg1 != (ESP_CONFIG1_PENABLE | 7)) + if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7)){ + esp_deallocate(esp); + scsi_unregister(esp->ehost); return 0; /* Bail out if address did not hold data */ - - esp = esp_allocate(tpnt, (void *) esp_dev); + } /* Do command transfer with programmed I/O */ esp->do_pio_cmds = 1; @@ -251,7 +254,7 @@ static int dma_irq_p(struct NCR_ESP *esp) { - return (esp->eregs->esp_status & ESP_STAT_INTR); + return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR); } static int dma_ports_p(struct NCR_ESP *esp) @@ -289,6 +292,7 @@ unsigned int key; key = ((struct NCR_ESP *)instance->hostdata)->slot; + esp_deallocate((struct NCR_ESP *)instance->hostdata); esp_release(); zorro_unconfig_board(key, 0); free_irq(IRQ_AMIGA_PORTS, esp_intr); Index: drivers/scsi/blz2060.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/blz2060.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 blz2060.c --- blz2060.c 1999/01/18 16:21:04 1.1.1.1 +++ blz2060.c 1999/01/28 17:51:10 @@ -203,7 +203,7 @@ static int dma_irq_p(struct NCR_ESP *esp) { - return (esp->eregs->esp_status & ESP_STAT_INTR); + return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR); } static void dma_led_off(struct NCR_ESP *esp) @@ -252,6 +252,7 @@ unsigned int key; key = ((struct NCR_ESP *)instance->hostdata)->slot; + esp_deallocate((struct NCR_ESP *)instance->hostdata); esp_release(); zorro_unconfig_board(key, 0); free_irq(IRQ_AMIGA_PORTS, esp_intr); Index: drivers/scsi/cyberstorm.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/cyberstorm.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 cyberstorm.c --- cyberstorm.c 1999/01/18 16:21:04 1.1.1.1 +++ cyberstorm.c 1999/01/28 16:12:41 @@ -265,7 +265,7 @@ static int dma_irq_p(struct NCR_ESP *esp) { /* It's important to check the DMA IRQ bit in the correct way! */ - return ((esp->eregs->esp_status & ESP_STAT_INTR) && + return ((esp_read(esp->eregs->esp_status) & ESP_STAT_INTR) && ((((struct cyber_dma_registers *)(esp->dregs))->cond_reg) & CYBER_DMA_HNDL_INTR)); } @@ -317,6 +317,7 @@ unsigned int key; key = ((struct NCR_ESP *)instance->hostdata)->slot; + esp_deallocate((struct NCR_ESP *)instance->hostdata); esp_release(); zorro_unconfig_board(key, 0); free_irq(IRQ_AMIGA_PORTS, esp_intr); Index: drivers/scsi/cyberstormII.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/cyberstormII.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 cyberstormII.c --- cyberstormII.c 1999/01/18 16:21:04 1.1.1.1 +++ cyberstormII.c 1999/01/28 16:16:13 @@ -73,12 +73,15 @@ address = (unsigned long)ZTWO_VADDR(esp_dev->cd_BoardAddr); eregs = (struct ESP_regs *)(address + CYBERII_ESP_ADDR); - eregs->esp_cfg1 = (ESP_CONFIG1_PENABLE | 7); + esp = esp_allocate(tpnt, (void *) esp_dev); + + esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7)); udelay(5); - if(eregs->esp_cfg1 != (ESP_CONFIG1_PENABLE | 7)) + if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7)) { + esp_deallocate(esp); + scsi_unregister(esp->ehost); return 0; /* Bail out if address did not hold data */ - - esp = esp_allocate(tpnt, (void *) esp_dev); + } /* Do command transfer with programmed I/O */ esp->do_pio_cmds = 1; @@ -216,7 +219,7 @@ static int dma_irq_p(struct NCR_ESP *esp) { /* It's important to check the DMA IRQ bit in the correct way! */ - return (esp->eregs->esp_status & ESP_STAT_INTR); + return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR); } static void dma_led_off(struct NCR_ESP *esp) @@ -264,6 +267,7 @@ unsigned int key; key = ((struct NCR_ESP *)instance->hostdata)->slot; + esp_deallocate((struct NCR_ESP *)instance->hostdata); esp_release(); zorro_unconfig_board(key, 0); free_irq(IRQ_AMIGA_PORTS, esp_intr); Index: drivers/scsi/fastlane.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/fastlane.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 fastlane.c --- fastlane.c 1999/01/18 16:21:04 1.1.1.1 +++ fastlane.c 1999/01/28 16:17:00 @@ -313,7 +313,7 @@ (dma_status & FASTLANE_DMA_CREQ) && #endif (!(dma_status & FASTLANE_DMA_MINT)) && - ((((struct ESP_regs *) (esp->eregs))->esp_status) & ESP_STAT_INTR)); + (esp_read(((struct ESP_regs *) (esp->eregs))->esp_status) & ESP_STAT_INTR)); } static void dma_led_off(struct NCR_ESP *esp) @@ -363,6 +363,7 @@ unsigned int key; key = ((struct NCR_ESP *)instance->hostdata)->slot; + esp_deallocate((struct NCR_ESP *)instance->hostdata); esp_release(); zorro_unconfig_board(key, 0); free_irq(IRQ_AMIGA_PORTS, esp_intr); Index: drivers/scsi/hosts.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/hosts.c,v retrieving revision 1.1.1.2 diff -u -r1.1.1.2 hosts.c --- hosts.c 1999/01/18 20:27:43 1.1.1.2 +++ hosts.c 1999/01/28 14:09:57 @@ -95,6 +95,10 @@ #include "fastlane.h" #endif +#ifdef CONFIG_OKTAGON_SCSI +#include "oktagon_esp.h" +#endif + #ifdef CONFIG_ATARI_SCSI #include "atari_scsi.h" #endif @@ -389,6 +393,9 @@ #endif #ifdef CONFIG_FASTLANE_SCSI SCSI_FASTLANE, +#endif +#ifdef CONFIG_OKTAGON_SCSI + SCSI_OKTAGON_ESP, #endif #endif Index: drivers/scsi/jazz_esp.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/jazz_esp.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 jazz_esp.c --- jazz_esp.c 1999/01/18 16:21:05 1.1.1.1 +++ jazz_esp.c 1999/01/28 14:58:27 @@ -196,7 +196,7 @@ static int dma_irq_p(struct NCR_ESP *esp) { - return (esp->eregs->esp_status & ESP_STAT_INTR); + return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR); } static int dma_ports_p(struct NCR_ESP *esp) Index: drivers/scsi/mac_esp.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/mac_esp.c,v retrieving revision 1.1.1.2 diff -u -r1.1.1.2 mac_esp.c --- mac_esp.c 1999/01/18 20:27:51 1.1.1.2 +++ mac_esp.c 1999/01/28 14:58:03 @@ -480,7 +480,7 @@ static int esp_dafb_dma_irq_p(struct NCR_ESP * esp) { unsigned int ret; - int sreg = esp->eregs->esp_status; + int sreg = esp_read(esp->eregs->esp_status); #ifdef DEBUG_MAC_ESP printk("mac_esp: esp_dafb_dma_irq_p dafb %d irq %d\n", @@ -521,7 +521,7 @@ static int esp_iosb_dma_irq_p(struct NCR_ESP * esp) { int ret = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ); - int sreg = esp->eregs->esp_status; + int sreg = esp_read(esp->eregs->esp_status); #ifdef DEBUG_MAC_ESP printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", @@ -625,7 +625,7 @@ static int dma_irq_p(struct NCR_ESP * esp) { - int i = esp->eregs->esp_status; + int i = esp_read(esp->eregs->esp_status); #ifdef DEBUG_MAC_ESP printk("mac_esp: dma_irq_p status %d\n", i); @@ -640,7 +640,7 @@ * Copied from iosb_dma_irq_p() */ int ret = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ); - int sreg = esp->eregs->esp_status; + int sreg = esp_read(esp->eregs->esp_status); #ifdef DEBUG_MAC_ESP printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", Index: drivers/scsi/mca_53c9x.c =================================================================== RCS file: /usr/src/CVS/linux/drivers/scsi/mca_53c9x.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 mca_53c9x.c --- mca_53c9x.c 1999/01/18 16:21:06 1.1.1.1 +++ mca_53c9x.c 1999/01/28 16:22:30 @@ -156,6 +156,8 @@ "NCR 53c9x SCSI", esp_intr)) { printk("Unable to request IRQ %d.\n", esp->irq); + esp_deallocate(esp); + unregister_scsi(esp->ehost); return 0; } @@ -163,6 +165,8 @@ printk("Unable to request DMA channel %d.\n", esp->dma); free_irq(esp->irq, esp_intr); + esp_deallocate(esp); + unregister_scsi(esp->ehost); return 0; } @@ -259,7 +263,7 @@ struct NCR_ESP *esp = (struct NCR_ESP *)host->hostdata; unsigned char tmp_byte; - + esp_deallocate(esp); /* * Tell the 86C01 to stop sending interrupts */