Module Name: src
Committed By: riz
Date: Sat Nov 20 00:26:52 UTC 2010
Modified Files:
src/distrib/notes/atari [netbsd-5]: hardware
src/share/man/man4 [netbsd-5]: we.4
src/sys/arch/atari/conf [netbsd-5]: GENERIC.in files.atari
Added Files:
src/sys/arch/atari/vme [netbsd-5]: if_we_vme.c
Log Message:
Pull up following revision(s) (requested by tsutsui in ticket #1366):
sys/arch/atari/vme/if_we_vme.c: revision 1.1
sys/arch/atari/vme/if_we_vme.c: revision 1.2
sys/arch/atari/conf/files.atari: revision 1.116
sys/arch/atari/conf/GENERIC.in: revision 1.84
share/man/man4/we.4: revision 1.17
distrib/notes/atari/hardware: revision 1.23
Add support for the SMC Elite Ultra Ethernet with the SMC_TT VME-ISA bridge.
The SMC_TT is the user designed "handmade" VME-ISA bridge circuit
for 16 bit VME slot on TT030 and the SMC Elite Ultra ISA Ethernet card.
More information about SMC_TT can be found in the following archive:
ftp://ftp.funet.fi/pub/atari/net/smc_tt1.zip
Demonstrated on the NetBSD booth in Open Source Conference 2010 kan...@kobe.
Check if mapped bus_space regions are actually valid
before trying to access them.
Fixes trap panic when SMC_TT board is not installed. (oops)
Note atari SMC_TT in SYNOPSIS.
- note SMC_TT to supported VME-bus devices
- capitalize Ethernet
To generate a diff of this commit:
cvs rdiff -u -r1.21.40.1 -r1.21.40.2 src/distrib/notes/atari/hardware
cvs rdiff -u -r1.16 -r1.16.4.1 src/share/man/man4/we.4
cvs rdiff -u -r1.73.4.5 -r1.73.4.6 src/sys/arch/atari/conf/GENERIC.in
cvs rdiff -u -r1.112.20.1 -r1.112.20.2 src/sys/arch/atari/conf/files.atari
cvs rdiff -u -r0 -r1.2.6.2 src/sys/arch/atari/vme/if_we_vme.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/distrib/notes/atari/hardware
diff -u src/distrib/notes/atari/hardware:1.21.40.1 src/distrib/notes/atari/hardware:1.21.40.2
--- src/distrib/notes/atari/hardware:1.21.40.1 Sat Apr 25 23:16:33 2009
+++ src/distrib/notes/atari/hardware Sat Nov 20 00:26:52 2010
@@ -1,4 +1,4 @@
-.\" $NetBSD: hardware,v 1.21.40.1 2009/04/25 23:16:33 snj Exp $
+.\" $NetBSD: hardware,v 1.21.40.2 2010/11/20 00:26:52 riz Exp $
.
.Nx*M
\*V runs on the TT030, Falcon, Hades and MilanI machines.
@@ -51,13 +51,15 @@
.It
VME-bus devices (TT030/Hades)
.(bullet -compact
-BVME410 ethernet
+BVME410 Ethernet
.It
Circad Leonardo 24-bit VME graphics adapter
.It
Crazy Dots VME et4000 graphics adapter
.It
-Riebl (and possibly PAM) ethernet cards on the VME bus.
+Riebl (and possibly PAM) Ethernet cards on the VME bus.
+.It
+SMC Elite Ultra ISA Ethernet with SMC_TT VME-ISA bridge
.bullet)
.It
PCI-bus devices (Hades and Milan only)
Index: src/share/man/man4/we.4
diff -u src/share/man/man4/we.4:1.16 src/share/man/man4/we.4:1.16.4.1
--- src/share/man/man4/we.4:1.16 Wed Apr 30 13:10:55 2008
+++ src/share/man/man4/we.4 Sat Nov 20 00:26:52 2010
@@ -1,4 +1,4 @@
-.\" $NetBSD: we.4,v 1.16 2008/04/30 13:10:55 martin Exp $
+.\" $NetBSD: we.4,v 1.16.4.1 2010/11/20 00:26:52 riz Exp $
.\"
.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -28,16 +28,20 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd October 20, 1997
+.Dd March 23, 2010
.Dt WE 4
.Os
.Sh NAME
.Nm we
.Nd "Western Digital/SMC WD80x3, SMC Elite Ultra, and SMC EtherEZ Ethernet cards device driver"
.Sh SYNOPSIS
+.Ss ISA boards
.Cd "we0 at isa? port 0x280 iomem 0xd0000 irq 9"
.Cd "we1 at isa? port 0x300 iomem 0xcc000 irq 10"
+.Ss MCA boards
.Cd "we* at mca? slot ?"
+.Ss atari
+.Cd "we0 at vme0 irq 4 # SMC Elite Ultra with SMC_TT VME-ISA bridge"
.Sh DESCRIPTION
The
.Nm
@@ -69,7 +73,8 @@
the on-board RAM for more receive buffers.
.El
.Pp
-Note that all supported MCA cards are 16bit.
+Note that all supported MCA cards are 16bit, and the SMC_TT VME-ISA bridge
+interface for atari supports only SMC Elite Ultra.
.Sh MEDIA SELECTION
The ability to select media from software is dependent on the particular
model of WD/SMC card. The following models support only manual configuration:
Index: src/sys/arch/atari/conf/GENERIC.in
diff -u src/sys/arch/atari/conf/GENERIC.in:1.73.4.5 src/sys/arch/atari/conf/GENERIC.in:1.73.4.6
--- src/sys/arch/atari/conf/GENERIC.in:1.73.4.5 Thu Mar 12 23:32:35 2009
+++ src/sys/arch/atari/conf/GENERIC.in Sat Nov 20 00:26:51 2010
@@ -1,5 +1,5 @@
#
-# $NetBSD: GENERIC.in,v 1.73.4.5 2009/03/12 23:32:35 snj Exp $
+# $NetBSD: GENERIC.in,v 1.73.4.6 2010/11/20 00:26:51 riz Exp $
#
# Generic atari
#
@@ -351,6 +351,7 @@
vme0 at avmebus0
le0 at vme0 irq 5 # Lance ethernet (Riebl/PAM).
le0 at vme0 irq 4 # Lance ethernet (BVME410).
+we0 at vme0 irq 4 # SMC Elite Ultra with SMC_TT VME-ISA bridge
et0 at vme0 # Crazy Dots II
#endif /* TT030_KERNEL */
#endif /* SMALL030_KERNEL */
Index: src/sys/arch/atari/conf/files.atari
diff -u src/sys/arch/atari/conf/files.atari:1.112.20.1 src/sys/arch/atari/conf/files.atari:1.112.20.2
--- src/sys/arch/atari/conf/files.atari:1.112.20.1 Thu Jan 8 22:45:30 2009
+++ src/sys/arch/atari/conf/files.atari Sat Nov 20 00:26:51 2010
@@ -1,5 +1,5 @@
#
-# $NetBSD: files.atari,v 1.112.20.1 2009/01/08 22:45:30 snj Exp $
+# $NetBSD: files.atari,v 1.112.20.2 2010/11/20 00:26:51 riz Exp $
maxpartitions 16
@@ -91,6 +91,10 @@
attach le at vme with le_vme: le24
file arch/atari/vme/if_le_vme.c le_vme
+# SMC Elite Ultra (8216) with SMC_TT VME-ISA bridge
+attach we at vme with we_vme
+file arch/atari/vme/if_we_vme.c we_vme
+
# Circad Leonardo 24-bit true color video
device leo
attach leo at vme
Added files:
Index: src/sys/arch/atari/vme/if_we_vme.c
diff -u /dev/null src/sys/arch/atari/vme/if_we_vme.c:1.2.6.2
--- /dev/null Sat Nov 20 00:26:52 2010
+++ src/sys/arch/atari/vme/if_we_vme.c Sat Nov 20 00:26:51 2010
@@ -0,0 +1,454 @@
+/* $NetBSD: if_we_vme.c,v 1.2.6.2 2010/11/20 00:26:51 riz Exp $ */
+
+/*-
+ * Copyright (c) 1997, 1998, 2010 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Device driver for National Semiconductor DS8390/WD83C690 based ethernet
+ * adapters.
+ *
+ * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
+ *
+ * Copyright (C) 1993, David Greenman. This software may be used, modified,
+ * copied, distributed, and sold, in both source and binary form provided that
+ * the above copyright and these terms are retained. Under no circumstances is
+ * the author responsible for the proper functioning of this software, nor does
+ * the author assume any responsibility for damages incurred with its use.
+ */
+
+/*
+ * Device driver for the SMC Elite Ultra (8216) with SMC_TT VME-ISA bridge.
+ * Based on:
+ * NetBSD: if_we_isa.c,v 1.20 2008/04/28 20:23:52 martin Exp
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: if_we_vme.c,v 1.2.6.2 2010/11/20 00:26:51 riz Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/socket.h>
+#include <sys/mbuf.h>
+#include <sys/syslog.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/if_media.h>
+
+#include <net/if_ether.h>
+
+#include <sys/bus.h>
+#include <sys/intr.h>
+
+#include <machine/cpu.h>
+#include <machine/iomap.h>
+#include <machine/scu.h>
+
+#include <atari/atari/intr.h>
+
+#include <atari/vme/vmevar.h>
+
+#include <dev/ic/dp8390reg.h>
+#include <dev/ic/dp8390var.h>
+#include <dev/ic/wereg.h>
+#include <dev/ic/wevar.h>
+
+/* #define WE_DEBUG */
+#ifdef WE_DEBUG
+#define DPRINTF(x) printf x
+#else
+#define DPRINTF(x) /**/
+#endif
+
+/* VME space mapped by SMC_TT VME-ISA bridge */
+#define SMCTT_MEM_BASE 0xFE000000 /* base for shared memory space */
+#define SMCTT_IOE_BASE 0xFE200000 /* base for I/O ports at even address */
+#define SMCTT_IOO_BASE 0xFE300000 /* base for I/O ports at odd address */
+
+#define SMCTT_IO_OFFSET (SMCTT_IOO_BASE - SMCTT_IOE_BASE)
+
+/* default SMC8216 settings for SMC_TT specified by a jumper switch at No.2 */
+#define SMCTT_MEM_ADDR 0xD0000
+#define SMCTT_IO_ADDR 0x280
+
+/* SMC_TT uses IRQ4 on VME, IRQ3 on ISA, and interrupt vector 0xAA */
+#define SMCTT_VME_IRQ 4
+#define SMCTT_ISA_IRQ 3
+#define SMCTT_VECTOR 0xAA
+
+static int we_vme_probe(device_t, cfdata_t , void *);
+static void we_vme_attach(device_t, device_t, void *);
+
+static uint8_t smctt_bus_space_read_1(bus_space_tag_t, bus_space_handle_t,
+ bus_size_t);
+static void smctt_bus_space_write_1(bus_space_tag_t, bus_space_handle_t,
+ bus_size_t, uint8_t);
+static int smctt_bus_space_peek_1(bus_space_tag_t, bus_space_handle_t,
+ bus_size_t);
+
+struct we_vme_softc {
+ struct we_softc sc_we;
+ struct atari_bus_space sc_bs;
+};
+
+CFATTACH_DECL_NEW(we_vme, sizeof(struct we_vme_softc),
+ we_vme_probe, we_vme_attach, NULL, NULL);
+
+static const int we_790_irq[] = {
+ -1, 9, 3, 5, 7, 10, 11, 15,
+};
+
+static int
+we_vme_probe(device_t parent, cfdata_t cf, void *aux)
+{
+ struct vme_attach_args *va = aux;
+ struct atari_bus_space t;
+ bus_space_tag_t asict, memt;
+ bus_space_handle_t asich, asich1, memh;
+ bus_size_t memsize;
+ bool asich_valid, asich1_valid, memh_valid;
+ int i, rv;
+ uint8_t sum, reg, type, hwr;
+
+ rv = 0;
+ asich_valid = false;
+ asich1_valid = false;
+ memh_valid = false;
+
+ if (va->va_iobase != IOBASEUNK &&
+ va->va_iobase != SMCTT_IOE_BASE + SMCTT_IO_ADDR)
+ return 0;
+ if (va->va_maddr != IOBASEUNK &&
+ va->va_maddr != SMCTT_MEM_BASE + SMCTT_MEM_ADDR)
+ return 0;
+ if (va->va_irq != IRQUNK &&
+ va->va_irq != SMCTT_VME_IRQ)
+ return 0;
+
+ /* SMC_TT has a bit weird I/O address mappings */
+ asict = beb_alloc_bus_space_tag(&t);
+ /* XXX setup only simple byte functions used in MI we(4) driver */
+ asict->abs_r_1 = smctt_bus_space_read_1;
+ asict->abs_w_1 = smctt_bus_space_write_1;
+ asict->abs_p_1 = smctt_bus_space_peek_1;
+
+ /*
+ * Only 16 bit accesses are allowed for memory space on SMC_TT,
+ * but MI we(4) uses them on 16 bit mode.
+ */
+ memt = va->va_memt;
+
+ /* Attempt to map the device. */
+ if (bus_space_map(asict, SMCTT_IOE_BASE + SMCTT_IO_ADDR, WE_NPORTS,
+ 0, &asich) != 0) {
+ DPRINTF(("%s: failed to map even I/O space", __func__));
+ goto out;
+ }
+ asich_valid = true;
+
+ if (bus_space_map(asict, SMCTT_IOO_BASE + SMCTT_IO_ADDR, WE_NPORTS,
+ 0, &asich1) != 0) {
+ DPRINTF(("%s: failed to map odd I/O space", __func__));
+ goto out;
+ }
+ asich1_valid = true;
+
+ /* XXX abuse stride for offset of odd ports from even ones */
+ asict->stride =
+ (vaddr_t)bus_space_vaddr(asict, asich1) -
+ (vaddr_t)bus_space_vaddr(asict, asich);
+
+ /* check if register regions are valid */
+ if (bus_space_peek_1(asict, asich, WE_PROM + 0) == 0 ||
+ bus_space_peek_1(asict, asich, WE_PROM + 1) == 0)
+ goto out;
+
+ /*
+ * Attempt to do a checksum over the station address PROM.
+ * If it fails, it's probably not an SMC_TT board.
+ */
+ DPRINTF(("%s: WE_PROM: ", __func__));
+ sum = 0;
+ for (i = 0; i < 8; i++) {
+ reg = bus_space_read_1(asict, asich, WE_PROM + i);
+ DPRINTF(("%02x ", reg));
+ sum += reg;
+ }
+ DPRINTF(("\n"));
+ DPRINTF(("%s: WE_ROM_SUM: 0x%02x\n", __func__, sum));
+
+ if (sum != WE_ROM_CHECKSUM_TOTAL)
+ goto out;
+
+ /*
+ * Reset the card to force it into a known state.
+ */
+ bus_space_write_1(asict, asich, WE_MSR, WE_MSR_RST);
+ delay(100);
+
+ bus_space_write_1(asict, asich, WE_MSR,
+ bus_space_read_1(asict, asich, WE_MSR) & ~WE_MSR_RST);
+
+ /* Wait in case the card is reading it's EEPROM. */
+ delay(5000);
+
+ /*
+ * Check card type.
+ */
+ type = bus_space_read_1(asict, asich, WE_CARD_ID);
+ /* Assume SMT_TT has only 8216 */
+ if (type != WE_TYPE_SMC8216C && type != WE_TYPE_SMC8216T)
+ goto out;
+
+ hwr = bus_space_read_1(asict, asich, WE790_HWR);
+ bus_space_write_1(asict, asich, WE790_HWR, hwr | WE790_HWR_SWH);
+ switch (bus_space_read_1(asict, asich, WE790_RAR) & WE790_RAR_SZ64) {
+ case WE790_RAR_SZ64:
+ memsize = 65536;
+ break;
+ case WE790_RAR_SZ32:
+ memsize = 32768;
+ break;
+ case WE790_RAR_SZ16:
+ memsize = 16384;
+ break;
+ case WE790_RAR_SZ8:
+ memsize = 8192;
+ break;
+ default:
+ memsize = 16384;
+ break;
+ }
+ bus_space_write_1(asict, asich, WE790_HWR, hwr);
+
+ /* Attempt to map the memory space. */
+ if (bus_space_map(memt, SMCTT_MEM_BASE + SMCTT_MEM_ADDR, memsize,
+ 0, &memh) != 0) {
+ DPRINTF(("%s: failed to map shared memory", __func__));
+ goto out;
+ }
+ memh_valid = true;
+
+ /* check if memory region is valid */
+ if (bus_space_peek_2(memt, memh, 0) == 0)
+ goto out;
+
+ /*
+ * Check the assigned interrupt number from the card.
+ */
+
+ /* Assemble together the encoded interrupt number. */
+ hwr = bus_space_read_1(asict, asich, WE790_HWR);
+ bus_space_write_1(asict, asich, WE790_HWR, hwr | WE790_HWR_SWH);
+
+ reg = bus_space_read_1(asict, asich, WE790_GCR);
+ i = ((reg & WE790_GCR_IR2) >> 4) |
+ ((reg & (WE790_GCR_IR1|WE790_GCR_IR0)) >> 2);
+ bus_space_write_1(asict, asich, WE790_HWR, hwr & ~WE790_HWR_SWH);
+
+ if (we_790_irq[i] != SMCTT_ISA_IRQ) {
+ DPRINTF(("%s: wrong IRQ (%d); check jumper settings\n",
+ __func__, we_790_irq[i]));
+ goto out;
+ }
+
+ /* So, we say we've found it! */
+ va->va_iobase = SMCTT_IOE_BASE + SMCTT_IO_ADDR;
+ va->va_iosize = WE_NPORTS;
+ va->va_maddr = SMCTT_MEM_BASE + SMCTT_MEM_ADDR;
+ va->va_msize = memsize;
+ va->va_irq = SMCTT_VME_IRQ;
+
+ rv = 1;
+
+ out:
+ if (asich_valid)
+ bus_space_unmap(asict, asich, WE_NPORTS);
+ if (asich1_valid)
+ bus_space_unmap(asict, asich1, WE_NPORTS);
+ if (memh_valid)
+ bus_space_unmap(memt, memh, memsize);
+ return rv;
+}
+
+void
+we_vme_attach(device_t parent, device_t self, void *aux)
+{
+ struct we_vme_softc *wvsc = device_private(self);
+ struct we_softc *wsc = &wvsc->sc_we;
+ struct dp8390_softc *sc = &wsc->sc_dp8390;
+ struct vme_attach_args *va = aux;
+ bus_space_tag_t nict, asict, memt;
+ bus_space_handle_t nich, asich, asich1, memh;
+ const char *typestr;
+
+ aprint_normal("\n");
+
+ sc->sc_dev = self;
+
+ /* See comments in the above probe function */
+ asict = beb_alloc_bus_space_tag(&wvsc->sc_bs);
+ asict->abs_r_1 = smctt_bus_space_read_1;
+ asict->abs_w_1 = smctt_bus_space_write_1;
+ nict = asict;
+
+ memt = va->va_memt;
+
+ /* Map the device. */
+ if (bus_space_map(asict, va->va_iobase, WE_NPORTS, 0, &asich) != 0) {
+ aprint_error_dev(self, "can't map even I/O space\n");
+ return;
+ }
+ if (bus_space_map(asict, va->va_iobase + SMCTT_IO_OFFSET, WE_NPORTS,
+ 0, &asich1) != 0) {
+ aprint_error_dev(self, "can't map odd I/O space\n");
+ goto out;
+ }
+ asict->stride =
+ (vaddr_t)bus_space_vaddr(asict, asich1) -
+ (vaddr_t)bus_space_vaddr(asict, asich);
+
+ if (bus_space_subregion(asict, asich, WE_NIC_OFFSET, WE_NIC_NPORTS,
+ &nich) != 0) {
+ aprint_error_dev(self, "can't subregion I/O space\n");
+ goto out1;
+ }
+
+ /* Map memory space. */
+ if (bus_space_map(memt, va->va_maddr, va->va_msize, 0, &memh) != 0) {
+ aprint_error_dev(self, "can't map shared memory\n");
+ goto out1;
+ }
+
+ wsc->sc_asict = asict;
+ wsc->sc_asich = asich;
+
+ sc->sc_regt = nict;
+ sc->sc_regh = nich;
+
+ sc->sc_buft = memt;
+ sc->sc_bufh = memh;
+
+ wsc->sc_maddr = va->va_maddr & 0xfffff;
+ sc->mem_size = va->va_msize;
+
+ /* Interface is always enabled. */
+ sc->sc_enabled = 1;
+
+ /* SMC_TT assumes SMC8216 */
+ sc->is790 = 1;
+
+ /* SMC_TT supports only 16 bit access for shared memory */
+ wsc->sc_flags |= WE_16BIT_ENABLE;
+
+ /* Appeal the Atari spirit :-) */
+ typestr = "SMC8216 with SMC_TT VME-ISA bridge";
+
+ if (we_config(self, wsc, typestr) != 0)
+ goto out2;
+
+ /*
+ * Enable the configured interrupt.
+ */
+ bus_space_write_1(asict, asich, WE790_ICR,
+ bus_space_read_1(asict, asich, WE790_ICR) | WE790_ICR_EIL);
+
+ /* Establish interrupt handler. */
+ wsc->sc_ih = intr_establish(SMCTT_VECTOR - 64, USER_VEC, 0,
+ (hw_ifun_t)dp8390_intr, sc);
+ if (wsc->sc_ih == NULL) {
+ aprint_error_dev(self, "can't establish interrupt\n");
+ goto out2;
+ }
+ /*
+ * Unmask the VME interrupt we're on.
+ */
+ if ((machineid & ATARI_TT) != 0)
+ SCU->vme_mask |= 1 << va->va_irq;
+
+ return;
+
+ out2:
+ bus_space_unmap(memt, memh, va->va_msize);
+ out1:
+ bus_space_unmap(asict, asich1, WE_NPORTS);
+ out:
+ bus_space_unmap(asict, asich, WE_NPORTS);
+}
+
+static uint8_t
+smctt_bus_space_read_1(bus_space_tag_t bt, bus_space_handle_t bh,
+ bus_size_t reg)
+{
+ uint8_t rv;
+
+ if ((reg & 0x01) != 0) {
+ /* odd address space */
+ rv = *(volatile uint8_t *)(bh + bt->stride + (reg & ~0x01));
+ } else {
+ /* even address space */
+ rv = *(volatile uint8_t *)(bh + reg);
+ }
+
+ return rv;
+}
+
+static void
+smctt_bus_space_write_1(bus_space_tag_t bt, bus_space_handle_t bh,
+ bus_size_t reg, uint8_t val)
+{
+
+ if ((reg & 0x01) != 0) {
+ /* odd address space */
+ *(volatile uint8_t *)(bh + bt->stride + (reg & ~0x01)) = val;
+ } else {
+ /* even address space */
+ *(volatile uint8_t *)(bh + reg) = val;
+ }
+}
+
+static int
+smctt_bus_space_peek_1(bus_space_tag_t bt, bus_space_handle_t bh,
+ bus_size_t reg)
+{
+ uint8_t *va;
+
+ if ((reg & 0x01) != 0) {
+ /* odd address space */
+ va = (uint8_t *)(bh + bt->stride + (reg & ~0x01));
+ } else {
+ /* even address space */
+ va = (uint8_t *)(bh + reg);
+ }
+
+ return !badbaddr(va, sizeof(uint8_t));
+}
