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().
  ...

1 files changed, 882 insertions, 0 deletions

diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
new file mode 100644
index 000000000..5d7dfefd6
--- /dev/null
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -0,0 +1,882 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+*  sym53c500_cs.c	Bob Tracy (rct@frus.com)
+*
+*  A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
+*  New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
+*  53c500 controller: intended for use with 2.6 and later kernels.
+*  The pcmcia-cs add-on version of this driver is not supported
+*  beyond 2.4.  It consisted of three files with history/copyright
+*  information as follows:
+*
+*  SYM53C500.h
+*	Bob Tracy (rct@frus.com)
+*	Original by Tom Corner (tcorner@via.at).
+*	Adapted from NCR53c406a.h which is Copyrighted (C) 1994
+*	Normunds Saumanis (normunds@rx.tech.swh.lv)
+*
+*  SYM53C500.c
+*	Bob Tracy (rct@frus.com)
+*	Original driver by Tom Corner (tcorner@via.at) was adapted
+*	from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 
+*	Normunds Saumanis (normunds@fi.ibm.com)
+*
+*  sym53c500.c
+*	Bob Tracy (rct@frus.com)
+*	Original by Tom Corner (tcorner@via.at) was adapted from a
+*	driver for the Qlogic SCSI card written by
+*	David Hinds (dhinds@allegro.stanford.edu).
+*/
+
+#define SYM53C500_DEBUG 0
+#define VERBOSE_SYM53C500_DEBUG 0
+
+/*
+*  Set this to 0 if you encounter kernel lockups while transferring 
+*  data in PIO mode.  Note this can be changed via "sysfs".
+*/
+#define USE_FAST_PIO 1
+
+/* =============== End of user configurable parameters ============== */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/blkdev.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+
+#include <scsi/scsi_ioctl.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/ciscode.h>
+
+
+/* ================================================================== */
+
+#define SYNC_MODE 0 		/* Synchronous transfer mode */
+
+/* Default configuration */
+#define C1_IMG   0x07		/* ID=7 */
+#define C2_IMG   0x48		/* FE SCSI2 */
+#define C3_IMG   0x20		/* CDB */
+#define C4_IMG   0x04		/* ANE */
+#define C5_IMG   0xa4		/* ? changed from b6= AA PI SIE POL */
+#define C7_IMG   0x80		/* added for SYM53C500 t. corner */
+
+/* Hardware Registers: offsets from io_port (base) */
+
+/* Control Register Set 0 */
+#define TC_LSB		0x00		/* transfer counter lsb */
+#define TC_MSB		0x01		/* transfer counter msb */
+#define SCSI_FIFO	0x02		/* scsi fifo register */
+#define CMD_REG		0x03		/* command register */
+#define STAT_REG	0x04		/* status register */
+#define DEST_ID		0x04		/* selection/reselection bus id */
+#define INT_REG		0x05		/* interrupt status register */
+#define SRTIMOUT	0x05		/* select/reselect timeout reg */
+#define SEQ_REG		0x06		/* sequence step register */
+#define SYNCPRD		0x06		/* synchronous transfer period */
+#define FIFO_FLAGS	0x07		/* indicates # of bytes in fifo */
+#define SYNCOFF		0x07		/* synchronous offset register */
+#define CONFIG1		0x08		/* configuration register */
+#define CLKCONV		0x09		/* clock conversion register */
+/* #define TESTREG	0x0A */		/* test mode register */
+#define CONFIG2		0x0B		/* configuration 2 register */
+#define CONFIG3		0x0C		/* configuration 3 register */
+#define CONFIG4		0x0D		/* configuration 4 register */
+#define TC_HIGH		0x0E		/* transfer counter high */
+/* #define FIFO_BOTTOM	0x0F */		/* reserve FIFO byte register */
+
+/* Control Register Set 1 */
+/* #define JUMPER_SENSE	0x00 */		/* jumper sense port reg (r/w) */
+/* #define SRAM_PTR	0x01 */		/* SRAM address pointer reg (r/w) */
+/* #define SRAM_DATA	0x02 */		/* SRAM data register (r/w) */
+#define PIO_FIFO	0x04		/* PIO FIFO registers (r/w) */
+/* #define PIO_FIFO1	0x05 */		/*  */
+/* #define PIO_FIFO2	0x06 */		/*  */
+/* #define PIO_FIFO3	0x07 */		/*  */
+#define PIO_STATUS	0x08		/* PIO status (r/w) */
+/* #define ATA_CMD	0x09 */		/* ATA command/status reg (r/w) */
+/* #define ATA_ERR	0x0A */		/* ATA features/error reg (r/w) */
+#define PIO_FLAG	0x0B		/* PIO flag interrupt enable (r/w) */
+#define CONFIG5		0x09		/* configuration 5 register */
+/* #define SIGNATURE	0x0E */		/* signature register (r) */
+/* #define CONFIG6	0x0F */		/* configuration 6 register (r) */
+#define CONFIG7		0x0d
+
+/* select register set 0 */
+#define REG0(x)		(outb(C4_IMG, (x) + CONFIG4))
+/* select register set 1 */
+#define REG1(x)		outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
+
+#if SYM53C500_DEBUG
+#define DEB(x) x
+#else
+#define DEB(x)
+#endif
+
+#if VERBOSE_SYM53C500_DEBUG
+#define VDEB(x) x
+#else
+#define VDEB(x)
+#endif
+
+#define LOAD_DMA_COUNT(x, count) \
+  outb(count & 0xff, (x) + TC_LSB); \
+  outb((count >> 8) & 0xff, (x) + TC_MSB); \
+  outb((count >> 16) & 0xff, (x) + TC_HIGH);
+
+/* Chip commands */
+#define DMA_OP               0x80
+
+#define SCSI_NOP             0x00
+#define FLUSH_FIFO           0x01
+#define CHIP_RESET           0x02
+#define SCSI_RESET           0x03
+#define RESELECT             0x40
+#define SELECT_NO_ATN        0x41
+#define SELECT_ATN           0x42
+#define SELECT_ATN_STOP      0x43
+#define ENABLE_SEL           0x44
+#define DISABLE_SEL          0x45
+#define SELECT_ATN3          0x46
+#define RESELECT3            0x47
+#define TRANSFER_INFO        0x10
+#define INIT_CMD_COMPLETE    0x11
+#define MSG_ACCEPT           0x12
+#define TRANSFER_PAD         0x18
+#define SET_ATN              0x1a
+#define RESET_ATN            0x1b
+#define SEND_MSG             0x20
+#define SEND_STATUS          0x21
+#define SEND_DATA            0x22
+#define DISCONN_SEQ          0x23
+#define TERMINATE_SEQ        0x24
+#define TARG_CMD_COMPLETE    0x25
+#define DISCONN              0x27
+#define RECV_MSG             0x28
+#define RECV_CMD             0x29
+#define RECV_DATA            0x2a
+#define RECV_CMD_SEQ         0x2b
+#define TARGET_ABORT_DMA     0x04
+
+/* ================================================================== */
+
+struct scsi_info_t {
+	struct pcmcia_device	*p_dev;
+	struct Scsi_Host *host;
+	unsigned short manf_id;
+};
+
+/*
+*  Repository for per-instance host data.
+*/
+struct sym53c500_data {
+	struct scsi_cmnd *current_SC;
+	int fast_pio;
+};
+
+struct sym53c500_cmd_priv {
+	int status;
+	int message;
+	int phase;
+};
+
+enum Phase {
+    idle,
+    data_out,
+    data_in,
+    command_ph,
+    status_ph,
+    message_out,
+    message_in
+};
+
+/* ================================================================== */
+
+static void
+chip_init(int io_port)
+{
+	REG1(io_port);
+	outb(0x01, io_port + PIO_STATUS);
+	outb(0x00, io_port + PIO_FLAG);
+
+	outb(C4_IMG, io_port + CONFIG4);	/* REG0(io_port); */
+	outb(C3_IMG, io_port + CONFIG3);
+	outb(C2_IMG, io_port + CONFIG2);
+	outb(C1_IMG, io_port + CONFIG1);
+
+	outb(0x05, io_port + CLKCONV);	/* clock conversion factor */
+	outb(0x9C, io_port + SRTIMOUT);	/* Selection timeout */
+	outb(0x05, io_port + SYNCPRD);	/* Synchronous transfer period */
+	outb(SYNC_MODE, io_port + SYNCOFF);	/* synchronous mode */  
+}
+
+static void
+SYM53C500_int_host_reset(int io_port)
+{
+	outb(C4_IMG, io_port + CONFIG4);	/* REG0(io_port); */
+	outb(CHIP_RESET, io_port + CMD_REG);
+	outb(SCSI_NOP, io_port + CMD_REG);	/* required after reset */
+	outb(SCSI_RESET, io_port + CMD_REG);
+	chip_init(io_port);
+}
+
+static __inline__ int
+SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
+{
+	int i;
+	int len;	/* current scsi fifo size */
+
+	REG1(base);
+	while (reqlen) {
+		i = inb(base + PIO_STATUS);
+		/* VDEB(printk("pio_status=%x\n", i)); */
+		if (i & 0x80) 
+			return 0;
+
+		switch (i & 0x1e) {
+		default:
+		case 0x10:	/* fifo empty */
+			len = 0;
+			break;
+		case 0x0:
+			len = 1;
+			break; 
+		case 0x8:	/* fifo 1/3 full */
+			len = 42;
+			break;
+		case 0xc:	/* fifo 2/3 full */
+			len = 84;
+			break;
+		case 0xe:	/* fifo full */
+			len = 128;
+			break;
+		}
+
+		if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
+			return 0;
+		}
+
+		if (len) {
+			if (len > reqlen) 
+				len = reqlen;
+
+			if (fast_pio && len > 3) {
+				insl(base + PIO_FIFO, request, len >> 2);
+				request += len & 0xfc; 
+				reqlen -= len & 0xfc; 
+			} else {
+				while (len--) {
+					*request++ = inb(base + PIO_FIFO);
+					reqlen--;
+				}
+			} 
+		}
+	}
+	return 0;
+}
+
+static __inline__ int
+SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
+{
+	int i = 0;
+	int len;	/* current scsi fifo size */
+
+	REG1(base);
+	while (reqlen && !(i & 0x40)) {
+		i = inb(base + PIO_STATUS);
+		/* VDEB(printk("pio_status=%x\n", i)); */
+		if (i & 0x80)	/* error */
+			return 0;
+
+		switch (i & 0x1e) {
+		case 0x10:
+			len = 128;
+			break;
+		case 0x0:
+			len = 84;
+			break;
+		case 0x8:
+			len = 42;
+			break;
+		case 0xc:
+			len = 1;
+			break;
+		default:
+		case 0xe:
+			len = 0;
+			break;
+		}
+
+		if (len) {
+			if (len > reqlen)
+				len = reqlen;
+
+			if (fast_pio && len > 3) {
+				outsl(base + PIO_FIFO, request, len >> 2);
+				request += len & 0xfc;
+				reqlen -= len & 0xfc;
+			} else {
+				while (len--) {
+					outb(*request++, base + PIO_FIFO);
+					reqlen--;
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+static irqreturn_t
+SYM53C500_intr(int irq, void *dev_id)
+{
+	unsigned long flags;
+	struct Scsi_Host *dev = dev_id;
+	DEB(unsigned char fifo_size;)
+	DEB(unsigned char seq_reg;)
+	unsigned char status, int_reg;
+	unsigned char pio_status;
+	int port_base = dev->io_port;
+	struct sym53c500_data *data =
+	    (struct sym53c500_data *)dev->hostdata;
+	struct scsi_cmnd *curSC = data->current_SC;
+	struct sym53c500_cmd_priv *scp = scsi_cmd_priv(curSC);
+	int fast_pio = data->fast_pio;
+
+	spin_lock_irqsave(dev->host_lock, flags);
+
+	VDEB(printk("SYM53C500_intr called\n"));
+
+	REG1(port_base);
+	pio_status = inb(port_base + PIO_STATUS);
+	REG0(port_base);
+	status = inb(port_base + STAT_REG);
+	DEB(seq_reg = inb(port_base + SEQ_REG));
+	int_reg = inb(port_base + INT_REG);
+	DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
+
+#if SYM53C500_DEBUG
+	printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 
+	    status, seq_reg, int_reg, fifo_size);
+	printk(", pio=%02x\n", pio_status);
+#endif /* SYM53C500_DEBUG */
+
+	if (int_reg & 0x80) {	/* SCSI reset intr */
+		DEB(printk("SYM53C500: reset intr received\n"));
+		curSC->result = DID_RESET << 16;
+		goto idle_out;
+	}
+
+	if (pio_status & 0x80) {
+		printk("SYM53C500: Warning: PIO error!\n");
+		curSC->result = DID_ERROR << 16;
+		goto idle_out;
+	}
+
+	if (status & 0x20) {		/* Parity error */
+		printk("SYM53C500: Warning: parity error!\n");
+		curSC->result = DID_PARITY << 16;
+		goto idle_out;
+	}
+
+	if (status & 0x40) {		/* Gross error */
+		printk("SYM53C500: Warning: gross error!\n");
+		curSC->result = DID_ERROR << 16;
+		goto idle_out;
+	}
+
+	if (int_reg & 0x20) {		/* Disconnect */
+		DEB(printk("SYM53C500: disconnect intr received\n"));
+		if (scp->phase != message_in) {	/* Unexpected disconnect */
+			curSC->result = DID_NO_CONNECT << 16;
+		} else {	/* Command complete, return status and message */
+			curSC->result = (scp->status & 0xff) |
+				((scp->message & 0xff) << 8) | (DID_OK << 16);
+		}
+		goto idle_out;
+	}
+
+	switch (status & 0x07) {	/* scsi phase */
+	case 0x00:			/* DATA-OUT */
+		if (int_reg & 0x10) {	/* Target requesting info transfer */
+			struct scatterlist *sg;
+			int i;
+
+			scp->phase = data_out;
+			VDEB(printk("SYM53C500: Data-Out phase\n"));
+			outb(FLUSH_FIFO, port_base + CMD_REG);
+			LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC));	/* Max transfer size */
+			outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
+
+			scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
+				SYM53C500_pio_write(fast_pio, port_base,
+				    sg_virt(sg), sg->length);
+			}
+			REG0(port_base);
+		}
+		break;
+
+	case 0x01:		/* DATA-IN */
+		if (int_reg & 0x10) {	/* Target requesting info transfer */
+			struct scatterlist *sg;
+			int i;
+
+			scp->phase = data_in;
+			VDEB(printk("SYM53C500: Data-In phase\n"));
+			outb(FLUSH_FIFO, port_base + CMD_REG);
+			LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC));	/* Max transfer size */
+			outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
+
+			scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
+				SYM53C500_pio_read(fast_pio, port_base,
+					sg_virt(sg), sg->length);
+			}
+			REG0(port_base);
+		}
+		break;
+
+	case 0x02:		/* COMMAND */
+		scp->phase = command_ph;
+		printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
+		break;
+
+	case 0x03:		/* STATUS */
+		scp->phase = status_ph;
+		VDEB(printk("SYM53C500: Status phase\n"));
+		outb(FLUSH_FIFO, port_base + CMD_REG);
+		outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
+		break;
+
+	case 0x04:		/* Reserved */
+	case 0x05:		/* Reserved */
+		printk("SYM53C500: WARNING: Reserved phase!!!\n");
+		break;
+
+	case 0x06:		/* MESSAGE-OUT */
+		DEB(printk("SYM53C500: Message-Out phase\n"));
+		scp->phase = message_out;
+		outb(SET_ATN, port_base + CMD_REG);	/* Reject the message */
+		outb(MSG_ACCEPT, port_base + CMD_REG);
+		break;
+
+	case 0x07:		/* MESSAGE-IN */
+		VDEB(printk("SYM53C500: Message-In phase\n"));
+		scp->phase = message_in;
+
+		scp->status = inb(port_base + SCSI_FIFO);
+		scp->message = inb(port_base + SCSI_FIFO);
+
+		VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
+		DEB(printk("Status = %02x  Message = %02x\n", scp->status, scp->message));
+
+		if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) {
+			outb(SET_ATN, port_base + CMD_REG);	/* Reject message */
+			DEB(printk("Discarding SAVE_POINTERS message\n"));
+		}
+		outb(MSG_ACCEPT, port_base + CMD_REG);
+		break;
+	}
+out:
+	spin_unlock_irqrestore(dev->host_lock, flags);
+	return IRQ_HANDLED;
+
+idle_out:
+	scp->phase = idle;
+	scsi_done(curSC);
+	goto out;
+}
+
+static void
+SYM53C500_release(struct pcmcia_device *link)
+{
+	struct scsi_info_t *info = link->priv;
+	struct Scsi_Host *shost = info->host;
+
+	dev_dbg(&link->dev, "SYM53C500_release\n");
+
+	/*
+	*  Do this before releasing/freeing resources.
+	*/
+	scsi_remove_host(shost);
+
+	/*
+	*  Interrupts getting hosed on card removal.  Try
+	*  the following code, mostly from qlogicfas.c.
+	*/
+	if (shost->irq)
+		free_irq(shost->irq, shost);
+	if (shost->io_port && shost->n_io_port)
+		release_region(shost->io_port, shost->n_io_port);
+
+	pcmcia_disable_device(link);
+
+	scsi_host_put(shost);
+} /* SYM53C500_release */
+
+static const char*
+SYM53C500_info(struct Scsi_Host *SChost)
+{
+	static char info_msg[256];
+	struct sym53c500_data *data =
+	    (struct sym53c500_data *)SChost->hostdata;
+
+	DEB(printk("SYM53C500_info called\n"));
+	(void)snprintf(info_msg, sizeof(info_msg),
+	    "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 
+	    SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
+	return (info_msg);
+}
+
+static int SYM53C500_queue_lck(struct scsi_cmnd *SCpnt)
+{
+	struct sym53c500_cmd_priv *scp = scsi_cmd_priv(SCpnt);
+	int i;
+	int port_base = SCpnt->device->host->io_port;
+	struct sym53c500_data *data =
+	    (struct sym53c500_data *)SCpnt->device->host->hostdata;
+
+	VDEB(printk("SYM53C500_queue called\n"));
+
+	DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 
+	    SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 
+		   (u8)SCpnt->device->lun,  scsi_bufflen(SCpnt)));
+
+	VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
+	    printk("cmd[%d]=%02x  ", i, SCpnt->cmnd[i]));
+	VDEB(printk("\n"));
+
+	data->current_SC = SCpnt;
+	scp->phase = command_ph;
+	scp->status = 0;
+	scp->message = 0;
+
+	/* We are locked here already by the mid layer */
+	REG0(port_base);
+	outb(scmd_id(SCpnt), port_base + DEST_ID);	/* set destination */
+	outb(FLUSH_FIFO, port_base + CMD_REG);	/* reset the fifos */
+
+	for (i = 0; i < SCpnt->cmd_len; i++) {
+		outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
+	}
+	outb(SELECT_NO_ATN, port_base + CMD_REG);
+
+	return 0;
+}
+
+static DEF_SCSI_QCMD(SYM53C500_queue)
+
+static int 
+SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
+{
+	int port_base = SCpnt->device->host->io_port;
+
+	DEB(printk("SYM53C500_host_reset called\n"));
+	spin_lock_irq(SCpnt->device->host->host_lock);
+	SYM53C500_int_host_reset(port_base);
+	spin_unlock_irq(SCpnt->device->host->host_lock);
+
+	return SUCCESS;
+}
+
+static int 
+SYM53C500_biosparm(struct scsi_device *disk,
+    struct block_device *dev,
+    sector_t capacity, int *info_array)
+{
+	int size;
+
+	DEB(printk("SYM53C500_biosparm called\n"));
+
+	size = capacity;
+	info_array[0] = 64;		/* heads */
+	info_array[1] = 32;		/* sectors */
+	info_array[2] = size >> 11;	/* cylinders */
+	if (info_array[2] > 1024) {	/* big disk */
+		info_array[0] = 255;
+		info_array[1] = 63;
+		info_array[2] = size / (255 * 63);
+	}
+	return 0;
+}
+
+static ssize_t
+SYM53C500_show_pio(struct device *dev, struct device_attribute *attr,
+		   char *buf)
+{
+	struct Scsi_Host *SHp = class_to_shost(dev);
+	struct sym53c500_data *data =
+	    (struct sym53c500_data *)SHp->hostdata;
+
+	return snprintf(buf, 4, "%d\n", data->fast_pio);
+}
+
+static ssize_t
+SYM53C500_store_pio(struct device *dev, struct device_attribute *attr,
+		    const char *buf, size_t count)
+{
+	int pio;
+	struct Scsi_Host *SHp = class_to_shost(dev);
+	struct sym53c500_data *data =
+	    (struct sym53c500_data *)SHp->hostdata;
+
+	pio = simple_strtoul(buf, NULL, 0);
+	if (pio == 0 || pio == 1) {
+		data->fast_pio = pio;
+		return count;
+	}
+	else
+		return -EINVAL;
+}
+
+/*
+*  SCSI HBA device attributes we want to
+*  make available via sysfs.
+*/
+static struct device_attribute SYM53C500_pio_attr = {
+	.attr = {
+		.name = "fast_pio",
+		.mode = (S_IRUGO | S_IWUSR),
+	},
+	.show = SYM53C500_show_pio,
+	.store = SYM53C500_store_pio,
+};
+
+static struct attribute *SYM53C500_shost_attrs[] = {
+	&SYM53C500_pio_attr.attr,
+	NULL,
+};
+
+ATTRIBUTE_GROUPS(SYM53C500_shost);
+
+/*
+*  scsi_host_template initializer
+*/
+static struct scsi_host_template sym53c500_driver_template = {
+     .module			= THIS_MODULE,
+     .name			= "SYM53C500",
+     .info			= SYM53C500_info,
+     .queuecommand		= SYM53C500_queue,
+     .eh_host_reset_handler	= SYM53C500_host_reset,
+     .bios_param		= SYM53C500_biosparm,
+     .proc_name			= "SYM53C500",
+     .can_queue			= 1,
+     .this_id			= 7,
+     .sg_tablesize		= 32,
+     .shost_groups		= SYM53C500_shost_groups,
+     .cmd_size			= sizeof(struct sym53c500_cmd_priv),
+};
+
+static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data)
+{
+	p_dev->io_lines = 10;
+	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
+
+	if (p_dev->resource[0]->start == 0)
+		return -ENODEV;
+
+	return pcmcia_request_io(p_dev);
+}
+
+static int
+SYM53C500_config(struct pcmcia_device *link)
+{
+	struct scsi_info_t *info = link->priv;
+	int ret;
+	int irq_level, port_base;
+	struct Scsi_Host *host;
+	struct scsi_host_template *tpnt = &sym53c500_driver_template;
+	struct sym53c500_data *data;
+
+	dev_dbg(&link->dev, "SYM53C500_config\n");
+
+	info->manf_id = link->manf_id;
+
+	ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL);
+	if (ret)
+		goto failed;
+
+	if (!link->irq)
+		goto failed;
+
+	ret = pcmcia_enable_device(link);
+	if (ret)
+		goto failed;
+
+	/*
+	*  That's the trouble with copying liberally from another driver.
+	*  Some things probably aren't relevant, and I suspect this entire
+	*  section dealing with manufacturer IDs can be scrapped.	--rct
+	*/
+	if ((info->manf_id == MANFID_MACNICA) ||
+	    (info->manf_id == MANFID_PIONEER) ||
+	    (info->manf_id == 0x0098)) {
+		/* set ATAcmd */
+		outb(0xb4, link->resource[0]->start + 0xd);
+		outb(0x24, link->resource[0]->start + 0x9);
+		outb(0x04, link->resource[0]->start + 0xd);
+	}
+
+	/*
+	*  irq_level == 0 implies tpnt->can_queue == 0, which
+	*  is not supported in 2.6.  Thus, only irq_level > 0
+	*  will be allowed.
+	*
+	*  Possible port_base values are as follows:
+	*
+	*	0x130, 0x230, 0x280, 0x290,
+	*	0x320, 0x330, 0x340, 0x350
+	*/
+	port_base = link->resource[0]->start;
+	irq_level = link->irq;
+
+	DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
+	    port_base, irq_level, USE_FAST_PIO);)
+
+	chip_init(port_base);
+
+	host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
+	if (!host) {
+		printk("SYM53C500: Unable to register host, giving up.\n");
+		goto err_release;
+	}
+
+	data = (struct sym53c500_data *)host->hostdata;
+
+	if (irq_level > 0) {
+		if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) {
+			printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
+			goto err_free_scsi;
+		}
+		DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
+	} else if (irq_level == 0) {
+		DEB(printk("SYM53C500: No interrupts detected\n"));
+		goto err_free_scsi;
+	} else {
+		DEB(printk("SYM53C500: Shouldn't get here!\n"));
+		goto err_free_scsi;
+	}
+
+	host->unique_id = port_base;
+	host->irq = irq_level;
+	host->io_port = port_base;
+	host->n_io_port = 0x10;
+	host->dma_channel = -1;
+
+	/*
+	*  Note fast_pio is set to USE_FAST_PIO by
+	*  default, but can be changed via "sysfs".
+	*/
+	data->fast_pio = USE_FAST_PIO;
+
+	info->host = host;
+
+	if (scsi_add_host(host, NULL))
+		goto err_free_irq;
+
+	scsi_scan_host(host);
+
+	return 0;
+
+err_free_irq:
+	free_irq(irq_level, host);
+err_free_scsi:
+	scsi_host_put(host);
+err_release:
+	release_region(port_base, 0x10);
+	printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
+	return -ENODEV;
+
+failed:
+	SYM53C500_release(link);
+	return -ENODEV;
+} /* SYM53C500_config */
+
+static int sym53c500_resume(struct pcmcia_device *link)
+{
+	struct scsi_info_t *info = link->priv;
+
+	/* See earlier comment about manufacturer IDs. */
+	if ((info->manf_id == MANFID_MACNICA) ||
+	    (info->manf_id == MANFID_PIONEER) ||
+	    (info->manf_id == 0x0098)) {
+		outb(0x80, link->resource[0]->start + 0xd);
+		outb(0x24, link->resource[0]->start + 0x9);
+		outb(0x04, link->resource[0]->start + 0xd);
+	}
+	/*
+	 *  If things don't work after a "resume",
+	 *  this is a good place to start looking.
+	 */
+	SYM53C500_int_host_reset(link->resource[0]->start);
+
+	return 0;
+}
+
+static void
+SYM53C500_detach(struct pcmcia_device *link)
+{
+	dev_dbg(&link->dev, "SYM53C500_detach\n");
+
+	SYM53C500_release(link);
+
+	kfree(link->priv);
+	link->priv = NULL;
+} /* SYM53C500_detach */
+
+static int
+SYM53C500_probe(struct pcmcia_device *link)
+{
+	struct scsi_info_t *info;
+
+	dev_dbg(&link->dev, "SYM53C500_attach()\n");
+
+	/* Create new SCSI device */
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+	info->p_dev = link;
+	link->priv = info;
+	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+
+	return SYM53C500_config(link);
+} /* SYM53C500_attach */
+
+MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
+MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
+MODULE_LICENSE("GPL");
+
+static const struct pcmcia_device_id sym53c500_ids[] = {
+	PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7),
+	PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8),
+	PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44),
+	PCMCIA_DEVICE_NULL,
+};
+MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids);
+
+static struct pcmcia_driver sym53c500_cs_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "sym53c500_cs",
+	.probe		= SYM53C500_probe,
+	.remove		= SYM53C500_detach,
+	.id_table       = sym53c500_ids,
+	.resume		= sym53c500_resume,
+};
+module_pcmcia_driver(sym53c500_cs_driver);