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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/scsi/aic7xxx/aic7770.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'drivers/scsi/aic7xxx/aic7770.c')
-rw-r--r--drivers/scsi/aic7xxx/aic7770.c385
1 files changed, 385 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic7770.c b/drivers/scsi/aic7xxx/aic7770.c
new file mode 100644
index 000000000..176704b24
--- /dev/null
+++ b/drivers/scsi/aic7xxx/aic7770.c
@@ -0,0 +1,385 @@
+/*
+ * Product specific probe and attach routines for:
+ * 27/284X and aic7770 motherboard SCSI controllers
+ *
+ * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
+ * All rights reserved.
+ *
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ *
+ * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $
+ *
+ * $FreeBSD$
+ */
+
+#include "aic7xxx_osm.h"
+#include "aic7xxx_inline.h"
+#include "aic7xxx_93cx6.h"
+
+#define ID_AIC7770 0x04907770
+#define ID_AHA_274x 0x04907771
+#define ID_AHA_284xB 0x04907756 /* BIOS enabled */
+#define ID_AHA_284x 0x04907757 /* BIOS disabled*/
+#define ID_OLV_274x 0x04907782 /* Olivetti OEM */
+#define ID_OLV_274xD 0x04907783 /* Olivetti OEM (Differential) */
+
+static int aic7770_chip_init(struct ahc_softc *ahc);
+static int aha2840_load_seeprom(struct ahc_softc *ahc);
+static ahc_device_setup_t ahc_aic7770_VL_setup;
+static ahc_device_setup_t ahc_aic7770_EISA_setup;
+static ahc_device_setup_t ahc_aic7770_setup;
+
+struct aic7770_identity aic7770_ident_table[] =
+{
+ {
+ ID_AHA_274x,
+ 0xFFFFFFFF,
+ "Adaptec 274X SCSI adapter",
+ ahc_aic7770_EISA_setup
+ },
+ {
+ ID_AHA_284xB,
+ 0xFFFFFFFE,
+ "Adaptec 284X SCSI adapter",
+ ahc_aic7770_VL_setup
+ },
+ {
+ ID_AHA_284x,
+ 0xFFFFFFFE,
+ "Adaptec 284X SCSI adapter (BIOS Disabled)",
+ ahc_aic7770_VL_setup
+ },
+ {
+ ID_OLV_274x,
+ 0xFFFFFFFF,
+ "Adaptec (Olivetti OEM) 274X SCSI adapter",
+ ahc_aic7770_EISA_setup
+ },
+ {
+ ID_OLV_274xD,
+ 0xFFFFFFFF,
+ "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
+ ahc_aic7770_EISA_setup
+ },
+ /* Generic chip probes for devices we don't know 'exactly' */
+ {
+ ID_AIC7770,
+ 0xFFFFFFFF,
+ "Adaptec aic7770 SCSI adapter",
+ ahc_aic7770_EISA_setup
+ }
+};
+const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table);
+
+struct aic7770_identity *
+aic7770_find_device(uint32_t id)
+{
+ struct aic7770_identity *entry;
+ int i;
+
+ for (i = 0; i < ahc_num_aic7770_devs; i++) {
+ entry = &aic7770_ident_table[i];
+ if (entry->full_id == (id & entry->id_mask))
+ return (entry);
+ }
+ return (NULL);
+}
+
+int
+aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
+{
+ int error;
+ int have_seeprom;
+ u_int hostconf;
+ u_int irq;
+ u_int intdef;
+
+ error = entry->setup(ahc);
+ have_seeprom = 0;
+ if (error != 0)
+ return (error);
+
+ error = aic7770_map_registers(ahc, io);
+ if (error != 0)
+ return (error);
+
+ /*
+ * Before we continue probing the card, ensure that
+ * its interrupts are *disabled*. We don't want
+ * a misstep to hang the machine in an interrupt
+ * storm.
+ */
+ ahc_intr_enable(ahc, FALSE);
+
+ ahc->description = entry->name;
+ error = ahc_softc_init(ahc);
+ if (error != 0)
+ return (error);
+
+ ahc->bus_chip_init = aic7770_chip_init;
+
+ error = ahc_reset(ahc, /*reinit*/FALSE);
+ if (error != 0)
+ return (error);
+
+ /* Make sure we have a valid interrupt vector */
+ intdef = ahc_inb(ahc, INTDEF);
+ irq = intdef & VECTOR;
+ switch (irq) {
+ case 9:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ break;
+ default:
+ printk("aic7770_config: invalid irq setting %d\n", intdef);
+ return (ENXIO);
+ }
+
+ if ((intdef & EDGE_TRIG) != 0)
+ ahc->flags |= AHC_EDGE_INTERRUPT;
+
+ switch (ahc->chip & (AHC_EISA|AHC_VL)) {
+ case AHC_EISA:
+ {
+ u_int biosctrl;
+ u_int scsiconf;
+ u_int scsiconf1;
+
+ biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
+ scsiconf = ahc_inb(ahc, SCSICONF);
+ scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
+
+ /* Get the primary channel information */
+ if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
+ ahc->flags |= 1;
+
+ if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
+ ahc->flags |= AHC_USEDEFAULTS;
+ } else {
+ if ((ahc->features & AHC_WIDE) != 0) {
+ ahc->our_id = scsiconf1 & HWSCSIID;
+ if (scsiconf & TERM_ENB)
+ ahc->flags |= AHC_TERM_ENB_A;
+ } else {
+ ahc->our_id = scsiconf & HSCSIID;
+ ahc->our_id_b = scsiconf1 & HSCSIID;
+ if (scsiconf & TERM_ENB)
+ ahc->flags |= AHC_TERM_ENB_A;
+ if (scsiconf1 & TERM_ENB)
+ ahc->flags |= AHC_TERM_ENB_B;
+ }
+ }
+ if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
+ ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
+ break;
+ }
+ case AHC_VL:
+ {
+ have_seeprom = aha2840_load_seeprom(ahc);
+ break;
+ }
+ default:
+ break;
+ }
+ if (have_seeprom == 0) {
+ kfree(ahc->seep_config);
+ ahc->seep_config = NULL;
+ }
+
+ /*
+ * Ensure autoflush is enabled
+ */
+ ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
+
+ /* Setup the FIFO threshold and the bus off time */
+ hostconf = ahc_inb(ahc, HOSTCONF);
+ ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
+ ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
+
+ ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
+ ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
+
+ /*
+ * Generic aic7xxx initialization.
+ */
+ error = ahc_init(ahc);
+ if (error != 0)
+ return (error);
+
+ error = aic7770_map_int(ahc, irq);
+ if (error != 0)
+ return (error);
+
+ ahc->init_level++;
+
+ /*
+ * Enable the board's BUS drivers
+ */
+ ahc_outb(ahc, BCTL, ENABLE);
+ return (0);
+}
+
+static int
+aic7770_chip_init(struct ahc_softc *ahc)
+{
+ ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
+ ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
+ ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
+ ahc_outb(ahc, BCTL, ENABLE);
+ return (ahc_chip_init(ahc));
+}
+
+/*
+ * Read the 284x SEEPROM.
+ */
+static int
+aha2840_load_seeprom(struct ahc_softc *ahc)
+{
+ struct seeprom_descriptor sd;
+ struct seeprom_config *sc;
+ int have_seeprom;
+ uint8_t scsi_conf;
+
+ sd.sd_ahc = ahc;
+ sd.sd_control_offset = SEECTL_2840;
+ sd.sd_status_offset = STATUS_2840;
+ sd.sd_dataout_offset = STATUS_2840;
+ sd.sd_chip = C46;
+ sd.sd_MS = 0;
+ sd.sd_RDY = EEPROM_TF;
+ sd.sd_CS = CS_2840;
+ sd.sd_CK = CK_2840;
+ sd.sd_DO = DO_2840;
+ sd.sd_DI = DI_2840;
+ sc = ahc->seep_config;
+
+ if (bootverbose)
+ printk("%s: Reading SEEPROM...", ahc_name(ahc));
+ have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
+ /*start_addr*/0, sizeof(*sc)/2);
+
+ if (have_seeprom) {
+
+ if (ahc_verify_cksum(sc) == 0) {
+ if(bootverbose)
+ printk ("checksum error\n");
+ have_seeprom = 0;
+ } else if (bootverbose) {
+ printk("done.\n");
+ }
+ }
+
+ if (!have_seeprom) {
+ if (bootverbose)
+ printk("%s: No SEEPROM available\n", ahc_name(ahc));
+ ahc->flags |= AHC_USEDEFAULTS;
+ } else {
+ /*
+ * Put the data we've collected down into SRAM
+ * where ahc_init will find it.
+ */
+ int i;
+ int max_targ;
+ uint16_t discenable;
+
+ max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
+ discenable = 0;
+ for (i = 0; i < max_targ; i++){
+ uint8_t target_settings;
+
+ target_settings = (sc->device_flags[i] & CFXFER) << 4;
+ if (sc->device_flags[i] & CFSYNCH)
+ target_settings |= SOFS;
+ if (sc->device_flags[i] & CFWIDEB)
+ target_settings |= WIDEXFER;
+ if (sc->device_flags[i] & CFDISC)
+ discenable |= (0x01 << i);
+ ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
+ }
+ ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
+ ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
+
+ ahc->our_id = sc->brtime_id & CFSCSIID;
+
+ scsi_conf = (ahc->our_id & 0x7);
+ if (sc->adapter_control & CFSPARITY)
+ scsi_conf |= ENSPCHK;
+ if (sc->adapter_control & CFRESETB)
+ scsi_conf |= RESET_SCSI;
+
+ if (sc->bios_control & CF284XEXTEND)
+ ahc->flags |= AHC_EXTENDED_TRANS_A;
+ /* Set SCSICONF info */
+ ahc_outb(ahc, SCSICONF, scsi_conf);
+
+ if (sc->adapter_control & CF284XSTERM)
+ ahc->flags |= AHC_TERM_ENB_A;
+ }
+ return (have_seeprom);
+}
+
+static int
+ahc_aic7770_VL_setup(struct ahc_softc *ahc)
+{
+ int error;
+
+ error = ahc_aic7770_setup(ahc);
+ ahc->chip |= AHC_VL;
+ return (error);
+}
+
+static int
+ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
+{
+ int error;
+
+ error = ahc_aic7770_setup(ahc);
+ ahc->chip |= AHC_EISA;
+ return (error);
+}
+
+static int
+ahc_aic7770_setup(struct ahc_softc *ahc)
+{
+ ahc->channel = 'A';
+ ahc->channel_b = 'B';
+ ahc->chip = AHC_AIC7770;
+ ahc->features = AHC_AIC7770_FE;
+ ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
+ ahc->flags |= AHC_PAGESCBS;
+ ahc->instruction_ram_size = 448;
+ return (0);
+}