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-rw-r--r--chips/lance_mapped.c417
1 files changed, 0 insertions, 417 deletions
diff --git a/chips/lance_mapped.c b/chips/lance_mapped.c
deleted file mode 100644
index 26096bd9..00000000
--- a/chips/lance_mapped.c
+++ /dev/null
@@ -1,417 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1993,1992,1991,1990 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: if_se_mapped.c
- * Author: Alessandro Forin, Carnegie Mellon University
- * Date: 8/90
- *
- * In-kernel side of the user-mapped ethernet driver.
- */
-
-#include <ln.h>
-#if NLN > 0
-#include <platforms.h>
-
-#include <mach/machine/vm_types.h>
-#include <machine/machspl.h> /* spl definitions */
-#include <chips/lance.h>
-#include <chips/busses.h>
-
-#include <device/device_types.h>
-#include <device/errno.h>
-#include <device/io_req.h>
-#include <device/net_status.h>
-#include <device/net_io.h>
-#include <device/if_hdr.h>
-#include <device/if_ether.h>
-
-#include <vm/vm_kern.h>
-#include <kern/eventcount.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 */
- /* remap from k2 to k0 */
-#define kvirt(v) ((phystokvc(pmap_extract(pmap_kernel(),v))))
-
-#include <mips/mips_cpu.h>
-/*
- * Wired addresses and sizes
- */
-#define SE0_REG_EMRG (se_reg_t)(0xb8000000)
-
-#define REGBASE(unit) (((u_int)SE_statii[unit].registers) - se_sw->regspace)
-
-#define SE_REG_PHYS(unit) kvutophys(REGBASE(unit)+se_sw->regspace)
-#define SE_REG_SIZE PAGE_SIZE
-
-#define SE_BUF_PHYS(unit) kvutophys(REGBASE(unit)+se_sw->bufspace)
-#define SE_BUF_SIZE (128*1024)
-
-#define SE_ADR_PHYS(unit) kvutophys(REGBASE(unit)+se_sw->romspace)
-#define SE_ADR_SIZE PAGE_SIZE
-#endif /*DECSTATION*/
-
-#ifdef VAXSTATION
-#define machine_btop vax_btop
-#endif /*VAXSTATION*/
-
-#ifdef LUNA88K
-# define machine_btop m88k_btop
-# define kvirt(v) (v)
-# define kvctophys(v) pmap_extract(pmap_kernel(),(v))
-# define SE0_REG_EMRG ((se_reg_t)0xF1000000U)
-# define REGBASE(unit) (((u_int)SE_statii[unit].registers) - se_sw->regspace)
-# define SE_REG_PHYS(unit) (REGBASE(unit) + se_sw->regspace)
-# define SE_REG_SIZE PAGE_SIZE
-# define SE_BUF_PHYS(unit) (REGBASE(unit) + se_sw->bufspace)
-# define SE_BUF_SIZE (64*1024)
-# define SE_ADR_PHYS(unit) kvctophys(REGBASE(unit) + se_sw->romspace)
-# define SE_ADR_SIZE PAGE_SIZE
-# define wbflush() /*empty*/
-#endif /*LUNA88K*/
-
-/*
- * Autoconf info
- */
-
-static vm_offset_t SEstd[NLN] = { 0 };
-static struct bus_device *SEinfo[NLN];
- void SE_attach();
- int SE_probe();
-
-struct bus_driver SEdriver =
- { SE_probe, 0, SE_attach, 0, SEstd, "SE", SEinfo, };
-
-/*
- * Externally visible functions
- */
-int SE_probe(); /* Kernel */
-void SE_intr(), SE_portdeath();
- /* User */
-int SE_open(), SE_close();
-vm_offset_t SE_mmap();
-
-
-/* forward declarations */
-
-static void SE_stop(unsigned int unit);
-
-/*
- * Status information for all interfaces
- */
-/*static*/ struct SE_status {
- se_reg_t registers;
- mapped_ether_info_t info;
- struct evc eventcounter;
-} SE_statii[NLN];
-
-
-/*
- * Probe the Lance to see (if) that it's there
- */
-int
-SE_probe(regbase, ui)
- vm_offset_t regbase;
- register struct bus_device *ui;
-{
- int unit = ui->unit;
- se_reg_t regs;
- vm_offset_t addr;
- mapped_ether_info_t info;
- struct SE_status *self;
-
-
- if (unit >= NLN)
- return 0;
-
- self = &SE_statii[unit];
-
- printf("[mappable] ");
-
- regs = (se_reg_t) (regbase + se_sw->regspace);
- self->registers = regs;
-
- /*
- * Reset the interface
- */
- SE_stop(unit);
-
- /*
- * Grab a page to be mapped later to users
- */
- (void) kmem_alloc_wired(kernel_map, &addr, PAGE_SIZE);
- /*
- on the decstation, kmem_alloc_wired returns virtual addresses
- in the k2 seg. Since this page is going to get mapped in
- user space, we need to transform it to a better understood
- virtual address. The kvirt function does this.
- */
- bzero(addr, PAGE_SIZE);
- info = (mapped_ether_info_t) kvirt(addr);
- self->info = info;
-
- /*
- * Set permanent info
- */
- info->rom_stride = se_sw->romstride;
- info->ram_stride = se_sw->ramstride;
- info->buffer_size = se_sw->ramsize;
- info->buffer_physaddr = se_sw->ln_bufspace;
-
- /*
- * Synch setup
- */
- evc_init(&self->eventcounter);
- info->wait_event = self->eventcounter.ev_id;
-
- return 1;
-}
-
-void
-SE_attach(ui)
- register struct bus_device *ui;
-{
-}
-
-
-/*
- * Shut off the lance
- */
-static void SE_stop(unsigned int unit)
-{
- register se_reg_t regs = SE_statii[unit].registers;
-
- if (regs == 0)
- /* Stray interrupt */
- regs = SE0_REG_EMRG;
-
- regs[2] = CSR0_SELECT; /* XXXX rap XXXX */
- wbflush();
- regs[0] = LN_CSR0_STOP;
- wbflush();
-}
-
-
-/*
- * Ethernet interface interrupt routine
- */
-void SE_intr(unit,spllevel)
- int unit;
- spl_t spllevel;
-{
- register struct SE_status *self = &SE_statii[unit];
- register se_reg_t regs = self->registers;
- register csr;
-
- if (regs == 0) { /* stray */
- SE_stop(unit);
- return;
- }
-
- /* Acknowledge interrupt request, drop spurious intr */
- csr = regs[0];
- if ((csr & LN_CSR0_INTR) == 0)
- return;
- regs[0] = csr & LN_CSR0_WTC; /* silence it */
-
- splx(spllevel); /* drop priority now */
-
- /* Pass csr state up to user thread */
- if (self->info) {
- self->info->interrupt_count++; /* total interrupts */
- self->info->saved_csr0 = csr;
- }
-
- /* Awake user thread */
- evc_signal(&self->eventcounter);
-}
-
-
-extern boolean_t se_use_mapped_interface[NLN];
-
-/*
- * Device open procedure
- */
-int SE_open(dev, flag, ior)
- io_req_t ior;
-{
- int unit = dev;
- register struct SE_status *self = &SE_statii[unit];
-
- if (unit >= NLN)
- return EINVAL;
-
- /*
- * Silence interface, just in case
- */
- SE_stop(unit);
-
- /*
- * Reset eventcounter
- */
- evc_signal(&self->eventcounter);
-
- se_use_mapped_interface[unit] = 1;
-
- /*
- * Do not turn Ether interrupts on. The user can do it when ready
- * to take them.
- */
-
- return 0;
-}
-
-/*
- * Device close procedure
- */
-int SE_close(dev, flag)
-{
- int unit = dev;
- register struct SE_status *self = &SE_statii[unit];
-
- if (unit >= NLN)
- return EINVAL;
-
- /*
- * Silence interface, in case user forgot
- */
- SE_stop(unit);
- evc_signal(&self->eventcounter);
-
- se_normal(unit);
-
- return 0;
-}
-
-
-/*
- * Get status procedure.
- * We need to tell that we are mappable.
- */
-io_return_t
-SE_get_status(ifp, flavor, status, status_count)
-/* struct ifnet *ifp; not really..*/
- int flavor;
- dev_status_t status; /* pointer to OUT array */
- unsigned int *status_count; /* OUT */
-{
- switch (flavor) {
- case NET_STATUS:
- {
- register struct net_status *ns = (struct net_status *)status;
-
- ns->min_packet_size = sizeof(struct ether_header);
- ns->max_packet_size = sizeof(struct ether_header) + ETHERMTU;
- ns->header_format = HDR_ETHERNET;
- ns->header_size = sizeof(struct ether_header);
- ns->address_size = 6;
- ns->flags = IFF_BROADCAST;
- ns->mapped_size = SE_BUF_SIZE + (3 * PAGE_SIZE);
-
- *status_count = NET_STATUS_COUNT;
- break;
- }
-/* case NET_ADDRESS: find it yourself */
- default:
- return (D_INVALID_OPERATION);
- }
- return (D_SUCCESS);
-}
-
-/*
- * Should not refuse this either
- */
-int SE_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
- */
-void SE_portdeath(dev, dead_port)
-{
-}
-
-
-/*
- * Virtual->physical mapping routine.
- */
-vm_offset_t
-SE_mmap(dev, off, prot)
- int dev;
- vm_offset_t off;
- vm_prot_t prot;
-{
- vm_offset_t page;
- vm_offset_t addr;
- int unit = dev;
-
- /*
- * The offset (into the VM object) defines the following layout
- *
- * off size what
- * 0 1pg mapping information (csr & #interrupts)
- * 1pg 1pg lance registers
- * 2pg 1pg lance station address (ROM)
- * 3pg 128k lance buffers
- */
-#define S0 PAGE_SIZE
-#define S1 (S0+SE_REG_SIZE)
-#define S2 (S1+SE_ADR_SIZE)
-#define S3 (S2+SE_BUF_SIZE)
-
- if (off < S0) {
- addr = kvctophys (SE_statii[unit].info);
- } else if (off < S1) {
- addr = (vm_offset_t) SE_REG_PHYS(unit);
- off -= S0;
- } else if (off < S2) {
- addr = (vm_offset_t) SE_ADR_PHYS(unit);
- off -= S1;
- } else if (off < S3) {
- addr = (vm_offset_t) SE_BUF_PHYS(unit);
- off -= S2;
- } else
- return (EINVAL);
-
- page = machine_btop(addr + off);
- return (page);
-}
-
-#endif NLN > 0
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