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Diffstat (limited to 'scsi/mapped_scsi.c')
| -rw-r--r-- | scsi/mapped_scsi.c | 586 |
1 files changed, 0 insertions, 586 deletions
diff --git a/scsi/mapped_scsi.c b/scsi/mapped_scsi.c deleted file mode 100644 index fe3dd77..0000000 --- a/scsi/mapped_scsi.c +++ /dev/null @@ -1,586 +0,0 @@ -/* - * Mach Operating System - * Copyright (c) 1991,1990 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ -/* - * File: mapped_scsi.c - * Author: Alessandro Forin, Carnegie Mellon University - * Date: 9/90 - * - * In-kernel side of the user-mapped SCSI driver. - */ - -#include <asc.h> -#include <sii.h> -#define NRZ (NASC+NSII) -#if NRZ > 0 -#include <platforms.h> - -#include <machine/machspl.h> /* spl definitions */ - -#include <device/device_types.h> -#include <device/io_req.h> -#include <chips/busses.h> - -#include <vm/vm_kern.h> -#include <kern/eventcount.h> - -#include <scsi/mapped_scsi.h> - -#include <machine/machspl.h> - -#ifdef DECSTATION - -#define machine_btop mips_btop - -#define kvctophys(v) K0SEG_TO_PHYS((v)) /* kernel virtual cached */ -#define phystokvc(p) PHYS_TO_K0SEG((p)) /* and back */ -#define kvutophys(v) K1SEG_TO_PHYS((v)) /* kernel virtual uncached */ -#define phystokvu(p) PHYS_TO_K1SEG((p)) /* and back */ - -#include <mips/mips_cpu.h> -#include <mips/PMAX/kn01.h> -#include <mips/PMAX/pmaz_aa.h> - -#define SII_REG_PHYS(self) kvutophys(self->registers.any) -#define SII_RAM_PHYS(self) (SII_REG_PHYS((self))+(KN01_SYS_SII_B_START-KN01_SYS_SII)) -#define SII_RAM_SIZE (KN01_SYS_SII_B_END-KN01_SYS_SII_B_START) - -#define ASC_REG_PHYS(self) kvutophys(self->registers.any) -#define ASC_DMAR_PHYS(self) (ASC_REG_PHYS((self))+ ASC_OFFSET_DMAR) -#define ASC_RAM_PHYS(self) (ASC_REG_PHYS((self))+ ASC_OFFSET_RAM) - -#define PAD_7061(n) short n -#define PAD_53C94(n) char n[3] - -#endif /*DECSTATION*/ - -#ifdef VAXSTATION -#define machine_btop vax_btop -#endif /*VAXSTATION*/ - -#ifdef P40 - -#define machine_btop mips_btop - -#define kvctophys(v) K0SEG_TO_PHYS((v)) /* kernel virtual cached */ -#define phystokvc(p) PHYS_TO_K0SEG((p)) /* and back */ -#define kvutophys(v) K1SEG_TO_PHYS((v)) /* kernel virtual uncached */ -#define phystokvu(p) PHYS_TO_K1SEG((p)) /* and back */ - -#include <mips/mips_cpu.h> - -#define ASC_RAM_SIZE 0 -#define ASC_OFFSET_DMAR 0 -#define ASC_OFFSET_RAM 0 - -#define ASC_REG_PHYS(self) kvutophys(self->registers.any) -#define ASC_DMAR_PHYS(self) (ASC_REG_PHYS((self))+ ASC_OFFSET_DMAR) -#define ASC_RAM_PHYS(self) (ASC_REG_PHYS((self))+ ASC_OFFSET_RAM) -#endif /* P40 */ - -/* - * Phys defines for the various supported HBAs - */ - -/* DEC7061 */ -#include <scsi/adapters/scsi_7061.h> - -#ifdef PAD_7061 - -typedef struct { - volatile unsigned short sii_sdb; /* rw: Data bus and parity */ - PAD_7061(pad0); - volatile unsigned short sii_sc1; /* rw: scsi signals 1 */ - PAD_7061(pad1); - volatile unsigned short sii_sc2; /* rw: scsi signals 2 */ - PAD_7061(pad2); - volatile unsigned short sii_csr; /* rw: control and status */ - PAD_7061(pad3); - volatile unsigned short sii_id; /* rw: scsi bus ID */ - PAD_7061(pad4); - volatile unsigned short sii_sel_csr; /* rw: selection status */ - PAD_7061(pad5); - volatile unsigned short sii_destat; /* ro: selection detector status */ - PAD_7061(pad6); - volatile unsigned short sii_dstmo; /* unsupp: dssi timeout */ - PAD_7061(pad7); - volatile unsigned short sii_data; /* rw: data register */ - PAD_7061(pad8); - volatile unsigned short sii_dma_ctrl; /* rw: dma control reg */ - PAD_7061(pad9); - volatile unsigned short sii_dma_len; /* rw: length of transfer */ - PAD_7061(pad10); - volatile unsigned short sii_dma_adr_low;/* rw: low address */ - PAD_7061(pad11); - volatile unsigned short sii_dma_adr_hi; /* rw: high address */ - PAD_7061(pad12); - volatile unsigned short sii_dma_1st_byte;/* rw: initial byte */ - PAD_7061(pad13); - volatile unsigned short sii_stlp; /* unsupp: dssi short trgt list ptr */ - PAD_7061(pad14); - volatile unsigned short sii_ltlp; /* unsupp: dssi long " " " */ - PAD_7061(pad15); - volatile unsigned short sii_ilp; /* unsupp: dssi initiator list ptr */ - PAD_7061(pad16); - volatile unsigned short sii_dssi_csr; /* unsupp: dssi control */ - PAD_7061(pad17); - volatile unsigned short sii_conn_csr; /* rc: connection interrupt control */ - PAD_7061(pad18); - volatile unsigned short sii_data_csr; /* rc: data interrupt control */ - PAD_7061(pad19); - volatile unsigned short sii_cmd; /* rw: command register */ - PAD_7061(pad20); - volatile unsigned short sii_diag_csr; /* rw: disgnostic status */ - PAD_7061(pad21); -} sii_padded_regmap_t; - -#else /*!PAD_7061*/ - -typedef sii_regmap_t sii_padded_regmap_t; - -#endif /*!PAD_7061*/ - -/* NCR 53C94 */ -#include <scsi/adapters/scsi_53C94.h> - -#ifdef PAD_53C94 -typedef struct { - volatile unsigned char asc_tc_lsb; /* rw: Transfer Counter LSB */ - PAD_53C94(pad0); - volatile unsigned char asc_tc_msb; /* rw: Transfer Counter MSB */ - PAD_53C94(pad1); - volatile unsigned char asc_fifo; /* rw: FIFO top */ - PAD_53C94(pad2); - volatile unsigned char asc_cmd; /* rw: Command */ - PAD_53C94(pad3); - volatile unsigned char asc_csr; /* r: Status */ -/*#define asc_dbus_id asc_csr /* w: Destination Bus ID */ - PAD_53C94(pad4); - volatile unsigned char asc_intr; /* r: Interrupt */ -/*#define asc_sel_timo asc_intr /* w: (re)select timeout */ - PAD_53C94(pad5); - volatile unsigned char asc_ss; /* r: Sequence Step */ -/*#define asc_syn_p asc_ss /* w: synchronous period */ - PAD_53C94(pad6); - volatile unsigned char asc_flags; /* r: FIFO flags + seq step */ -/*#define asc_syn_o asc_flags /* w: synchronous offset */ - PAD_53C94(pad7); - volatile unsigned char asc_cnfg1; /* rw: Configuration 1 */ - PAD_53C94(pad8); - volatile unsigned char asc_ccf; /* w: Clock Conv. Factor */ - PAD_53C94(pad9); - volatile unsigned char asc_test; /* w: Test Mode */ - PAD_53C94(pad10); - volatile unsigned char asc_cnfg2; /* rw: Configuration 2 */ - PAD_53C94(pad11); - volatile unsigned char asc_cnfg3; /* rw: Configuration 3 */ - PAD_53C94(pad12); - volatile unsigned char asc_rfb; /* w: Reserve FIFO byte */ - PAD_53C94(pad13); -} asc_padded_regmap_t; - -#else /* !PAD_53C94 */ - -typedef asc_regmap_t asc_padded_regmap_t; - -#endif /* !PAD_53C94 */ - -/* - * Co-existency with in-kernel drivers - */ -boolean_t rz_use_mapped_interface = FALSE; - -/* - * Status information for all HBAs - */ -/*static*/ struct RZ_status { - union { - unsigned long any; - asc_padded_regmap_t *asc; - sii_padded_regmap_t *sii; - } registers; - int (*stop)(); - vm_offset_t (*mmap)(); - mapped_scsi_info_t info; - struct evc eventcounter; -} RZ_statii[NRZ]; - -typedef struct RZ_status *RZ_status_t; - - -/* - * Probe routine for all HBAs - */ -RZ_probe(regbase, ui, hba) - unsigned long regbase; - register struct bus_device *ui; -{ - int unit = ui->unit; - vm_offset_t addr; - mapped_scsi_info_t info; - struct RZ_status *self; - - printf("[mappable] "); - - self = &RZ_statii[unit]; - - self->registers.any = regbase; - - /* - * Grab a page to be mapped later to users - */ - (void) kmem_alloc_wired(kernel_map, &addr, PAGE_SIZE); /* kseg2 */ - bzero(addr, PAGE_SIZE); - addr = pmap_extract(pmap_kernel(), addr); /* phys */ - info = (mapped_scsi_info_t) (phystokvc(addr)); - self->info = info; - - /* - * Set permanent info - */ - info->interrupt_count = 0; -/*XXX*/ info->ram_size = ASC_RAM_SIZE; - info->hba_type = hba; - - evc_init(&self->eventcounter); - info->wait_event = self->eventcounter.ev_id; - - return 1; -} - -/* - * Device open procedure - */ -RZ_open(dev, flag, ior) - io_req_t ior; -{ - int unit = dev; - register RZ_status_t self = &RZ_statii[unit]; - - - if (unit >= NRZ) - return D_NO_SUCH_DEVICE; - - /* - * Silence interface, just in case - */ - (*self->stop)(unit); - - /* - * Reset eventcounter - */ - evc_signal(&self->eventcounter); - - rz_use_mapped_interface = TRUE; - - /* - * Do not turn interrupts on. The user can do it when ready - * to take them. - */ - - return 0; -} - -/* - * Device close procedure - */ -RZ_close(dev, flag) -{ - int unit = dev; - register RZ_status_t self = &RZ_statii[unit]; - - if (unit >= NRZ) - return D_NO_SUCH_DEVICE; - - /* - * Silence interface, in case user forgot - */ - (*self->stop)(unit); - - evc_signal(&self->eventcounter); - - rz_use_mapped_interface = FALSE; - - /* XXX rz_kernel_mode(); XXX */ - - return 0; -} - - -/* - * Get status procedure. - * We need to tell that we are mappable. - */ -io_return_t -RZ_get_status(dev, flavor, status, status_count) - int dev; - int flavor; - dev_status_t status; - unsigned int status_count; -{ - return (D_SUCCESS); -} - -/* - * Should not refuse this either - */ -RZ_set_status(dev, flavor, status, status_count) - int dev; - int flavor; - dev_status_t status; - unsigned int status_count; -{ - return (D_SUCCESS); -} - -/* - * Port death notification routine - */ -RZ_portdeath(dev, dead_port) -{ -} - -/* - * Page mapping, switch off to HBA-specific for regs&ram - */ -vm_offset_t -RZ_mmap(dev, off, prot) - int dev; -{ - int unit = dev; - register RZ_status_t self = &RZ_statii[unit]; - vm_offset_t page; - vm_offset_t addr; - io_return_t ret; - - if (off < SCSI_INFO_SIZE) { - addr = kvctophys (self->info) + off; - ret = D_SUCCESS; - } else - ret = (*self->mmap)(self, off, prot, &addr); - - if (ret != D_SUCCESS) - return ret; - - page = machine_btop(addr); - - return (page); -} - - -/* - *--------------------------------------------------------------- - * The rest of the file contains HBA-specific routines - *--------------------------------------------------------------- - */ - -#if NASC > 0 -/* - * Routines for the NCR 53C94 - */ -static -ASC_stop(unit) -{ - register RZ_status_t self = &RZ_statii[unit]; - register asc_padded_regmap_t *regs = self->registers.asc; - int ack; - - ack = regs->asc_intr; /* Just acknowledge pending interrupts */ -} - -ASC_probe(reg, ui) - unsigned long reg; - register struct bus_device *ui; -{ - register RZ_status_t self = &RZ_statii[ui->unit]; - static vm_offset_t ASC_mmap(); - - self->stop = ASC_stop; - self->mmap = ASC_mmap; - return RZ_probe(reg, ui, HBA_NCR_53c94); -} - - -ASC_intr(unit,spllevel) - spl_t spllevel; -{ - register RZ_status_t self = &RZ_statii[unit]; - register asc_padded_regmap_t *regs = self->registers.asc; - register csr, intr, seq_step, cmd; - - /* - * Acknowledge interrupt request - * - * This clobbers some two other registers, therefore - * we read them beforehand. It also clears the intr - * request bit, silencing the interface for now. - */ - csr = regs->asc_csr; - - /* drop spurious interrupts */ - if ((csr & ASC_CSR_INT) == 0) - return; - seq_step = regs->asc_ss; - cmd = regs->asc_cmd; - - intr = regs->asc_intr; /* ack */ - - splx(spllevel); /* drop priority */ - - if (self->info) { - self->info->interrupt_count++; /* total interrupts */ - self->info->saved_regs.asc.csr = csr; - self->info->saved_regs.asc.isr = intr; - self->info->saved_regs.asc.seq = seq_step; - self->info->saved_regs.asc.cmd = cmd; - } - - /* Awake user thread */ - evc_signal(&self->eventcounter); -} - -/* - * Virtual->physical mapping routine for PMAZ-AA - */ -static vm_offset_t -ASC_mmap(self, off, prot, addr) - RZ_status_t self; - vm_offset_t off; - vm_prot_t prot; - vm_offset_t *addr; -{ - /* - * The offset (into the VM object) defines the following layout - * - * off size what - * 0 1pg mapping information (csr & #interrupts) - * 1pg 1pg ASC registers - * 2pg 1pg ASC dma - * 3pg 128k ASC ram buffers - */ - -#define ASC_END (ASC_RAM_BASE+ASC_RAM_SIZE) - - if (off < ASC_DMAR_BASE) - *addr = (vm_offset_t) ASC_REG_PHYS(self) + (off - SCSI_INFO_SIZE); - else if (off < ASC_RAM_BASE) - *addr = (vm_offset_t) ASC_DMAR_PHYS(self) + (off - ASC_REGS_BASE); - else if (off < ASC_END) - *addr = (vm_offset_t) ASC_RAM_PHYS(self) + (off - ASC_RAM_BASE); - else - return D_INVALID_SIZE; - - return D_SUCCESS; -} -#endif NASC > 0 - -#if NSII > 0 -SII_stop(unit) -{ - register RZ_status_t self = &RZ_statii[unit]; - register sii_padded_regmap_t *regs = self->registers.sii; - - regs->sii_csr &= ~SII_CSR_IE; /* disable interrupts */ - /* clear all wtc bits */ - regs->sii_conn_csr = regs->sii_conn_csr; - regs->sii_data_csr = regs->sii_data_csr; -} - -SII_probe(reg, ui) - unsigned long reg; - register struct bus_device *ui; -{ - register RZ_status_t self = &RZ_statii[ui->unit]; - static vm_offset_t SII_mmap(); - - self->stop = SII_stop; - self->mmap = SII_mmap; - return RZ_probe(reg, ui, HBA_DEC_7061); -} - -SII_intr(unit,spllevel) - spl_t spllevel; -{ - register RZ_status_t self = &RZ_statii[unit]; - register sii_padded_regmap_t *regs = self->registers.sii; - register unsigned short conn, data; - - /* - * Disable interrupts, saving cause(s) first. - */ - conn = regs->sii_conn_csr; - data = regs->sii_data_csr; - - /* drop spurious calls */ - if (((conn|data) & (SII_DTR_DI|SII_DTR_CI)) == 0) - return; - - regs->sii_csr &= ~SII_CSR_IE; - - regs->sii_conn_csr = conn; - regs->sii_data_csr = data; - - splx(spllevel); - - if (self->info) { - self->info->interrupt_count++; /* total interrupts */ - self->info->saved_regs.sii.sii_conn_csr = conn; - self->info->saved_regs.sii.sii_data_csr = data; - } - - /* Awake user thread */ - evc_signal(&self->eventcounter); -} - -static vm_offset_t -SII_mmap(self, off, prot, addr) - RZ_status_t self; - vm_offset_t off; - vm_prot_t prot; - vm_offset_t *addr; -{ - /* - * The offset (into the VM object) defines the following layout - * - * off size what - * 0 1pg mapping information (csr & #interrupts) - * 1pg 1pg SII registers - * 2pg 128k SII ram buffer - */ - -#define SII_END (SII_RAM_BASE+SII_RAM_SIZE) - - if (off < SII_RAM_BASE) - *addr = (vm_offset_t) SII_REG_PHYS(self) + (off - SCSI_INFO_SIZE); - else if (off < SII_END) - *addr = (vm_offset_t) SII_RAM_PHYS(self) + (off - SII_RAM_BASE); - else - return D_INVALID_SIZE; - - return D_SUCCESS; -} -#endif NSII > 0 - -#endif NRZ > 0 |