diff options
Diffstat (limited to 'chips/atm.c')
-rw-r--r-- | chips/atm.c | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/chips/atm.c b/chips/atm.c deleted file mode 100644 index 165cd23..0000000 --- a/chips/atm.c +++ /dev/null @@ -1,302 +0,0 @@ -/* - * Mach Operating System - * Copyright (c) 1992 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. - */ - -#include <atm.h> - -#if NATM > 0 - -#include <vm/vm_kern.h> -#include <machine/machspl.h> /* spl definitions */ -#include <kern/time_out.h> /* ? maybe */ -#include <device/errno.h> -#include <device/io_req.h> -#include <device/net_status.h> - -#include <chips/busses.h> -#include <chips/atmreg.h> - -#include <kern/eventcount.h> - -#include <mips/mips_cpu.h> - - -struct bus_device *atm_info[NATM]; -int atm_probe(); -static void atm_attach(); - -struct bus_driver atm_driver = - { atm_probe, 0, atm_attach, 0, /* csr */ 0, "atm", atm_info, - "", 0, /* flags */ 0 }; /* ENABLED BUS INTR? */ - -/* XX "", 0, BUS_INTR_DISABLED}; */ - -typedef struct atm_softc { - struct atm_device *atm_dev; - struct evc atm_eventcounter; - mapped_atm_info_t atm_mapped_info; -} atm_softc_t; - - -natural_t atm_nintrs = 0; - -atm_softc_t atm_softc[NATM]; - -atm_probe(reg, ui) - vm_offset_t reg; - register struct bus_device *ui; -{ - register atm_softc_t *atm; - mapped_atm_info_t info; /* info struct to hand to users */ - vm_offset_t addr; - int unit = ui->unit; - - if (check_memory(reg, 0)) { - return 0; - } - - atm_info[unit] = ui; - atm = &atm_softc[unit]; - atm->atm_dev = (struct atm_device *) reg; /* k1 address */ - - evc_init(&atm->atm_eventcounter); - -printf("evc_init of atm: event counter id is %d\n", atm->atm_eventcounter.ev_id); - - /* initialize the interface to deliver. No interrupts by default */ - atm->atm_dev->sreg = 0; - atm->atm_dev->creg = (CR_RX_RESET | CR_TX_RESET); - atm->atm_dev->creg = 0; - atm->atm_dev->creg_set = (CR_RX_ENABLE | CR_TX_ENABLE); -#ifdef notdef - atm->atm_dev->rxthresh = 0; - atm->atm_dev->rxtimerv = 0; - atm->atm_dev->creg_s = RX_EOM_INTR; /* enable interrupt on end of message */ -#endif - - /* - * 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_atm_info_t) PHYS_TO_K0SEG(addr); - atm->atm_mapped_info = info; - - /* - * Set some permanent info - */ - info->hello_world = 0xdeadbeef; - info->interrupt_count = 0; - info->wait_event = atm->atm_eventcounter.ev_id; - info->saved_status_reg = 0; - - return 1; -} - -static void -atm_attach(ui) -register struct bus_device *ui; -{ -} - -int atm_disable_interrupts_after_each = 1; - - -#define ATM_INTERRUPTS (RX_COUNT_INTR | RX_EOM_INTR | RX_TIME_INTR) - -atm_intr(unit, spllevel) -int unit; -int spllevel; -{ - register struct atm_softc *atm = &atm_softc[unit]; - struct atm_device *atm_dev = atm->atm_dev; - unsigned int intr; - - if (atm_dev == 0) { - printf("atm: stray interrupt\n"); - return; - } - - /* Acknowledge interrupt request */ - intr = ATM_READ_REG(atm_dev->sreg); - atm_dev->sreg = ~(intr & ATM_INTERRUPTS); - - /* clear the reason for the interrupt */ - if (atm_disable_interrupts_after_each) - atm_dev->creg &= ~intr; - - splx(spllevel); /* drop priority now */ - - atm_intr_occurred(); - - - /* Pass status info up to user */ - if (atm->atm_mapped_info) { - atm->atm_mapped_info->interrupt_count++; - atm->atm_mapped_info->saved_status_reg = intr; - } - - /* Awake user thread */ - - evc_signal(&atm->atm_eventcounter); - - /* NOTE: INTERRUPTS ARE DISABLED. */ -} - -atm_intr_occurred() -{ - atm_nintrs++; -} - - -atm_output(dev, ior) -int dev; -io_req_t ior; -{ -} - -atm_start(unit) -int unit; -{ -} - -atm_open(dev, flag, ior) - int dev; - int flag; - io_req_t ior; -{ - register int unit = dev; - register atm_softc_t *atm = &atm_softc[unit]; - - if (unit >= NATM) - return EINVAL; - if (!atm->atm_dev) - return ENXIO; - - return KERN_SUCCESS; -} - -atm_close(dev, flag) -int dev; -{ -} - -atm_read(dev, ior) -int dev; -io_req_t ior; -{ -} - -atm_write(dev, ior) -int dev; -io_req_t ior; -{ -} - -atm_get_status(dev, flavor, status, status_count) - int dev; - int flavor; - dev_status_t status; /* pointer to OUT array */ - natural_t *status_count; /* out */ -{ - switch (flavor) { - case NET_STATUS: - { - register struct net_status *ns = (struct net_status *)status; - - ns->min_packet_size = sizeof(struct sar_data); - ns->max_packet_size = sizeof(struct sar_data); - ns->header_format = 999; /* XX */ - ns->header_size = sizeof(int); /* XX */ - ns->address_size = 0; - ns->flags = 0; - ns->mapped_size = sizeof(struct atm_device) + PAGE_SIZE; - *status_count = NET_STATUS_COUNT; - break; - } - case NET_ADDRESS: - /* This would be a good place for it */ - default: - return (D_INVALID_OPERATION); - } - return (D_SUCCESS); -} - -atm_set_status(dev, flavor, status, status_count) - int dev; - int flavor; - dev_status_t status; - natural_t status_count; -{ -} - -atm_mmap(dev, off, prot) - int dev; - vm_offset_t off; - int prot; -{ - int unit = dev; - vm_offset_t addr; - - /* - * Layout of mapped area is: - * 000 -- FA_END: DEVICE - * FA_END -- FA_END + PAGE_SIZE: SHARED STATE - */ - if (off < sizeof(struct atm_device)) { - addr = K1SEG_TO_PHYS((vm_offset_t)(atm_softc[unit].atm_dev)) + off; - } else if (off < sizeof(struct atm_device) + PAGE_SIZE) { - addr = K0SEG_TO_PHYS(atm_softc[unit].atm_mapped_info); - } else return -1; - return mips_btop(addr); -} - -atm_setinput(dev, receive_port, priority, filter, filter_count) - int dev; - ipc_port_t receive_port; - int priority; - /*filter_t *filter;*/ - natural_t filter_count; -{ -} - -atm_restart(ifp) -/* register struct ifnet *ifp; */ -{ -} - -atm_portdeath(dev, port) - int dev; - mach_port_t port; -{ -} - -#endif NATM > 0 - - - - - |