From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/usb/storage/freecom.c | 578 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 578 insertions(+) create mode 100644 drivers/usb/storage/freecom.c (limited to 'drivers/usb/storage/freecom.c') diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c new file mode 100644 index 000000000..2b098b55c --- /dev/null +++ b/drivers/usb/storage/freecom.c @@ -0,0 +1,578 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Freecom USB/IDE adaptor + * + * Freecom v0.1: + * + * First release + * + * Current development and maintenance by: + * (C) 2000 David Brown + * + * This driver was developed with information provided in FREECOM's USB + * Programmers Reference Guide. For further information contact Freecom + * (https://www.freecom.de/) + */ + +#include +#include +#include + +#include "usb.h" +#include "transport.h" +#include "protocol.h" +#include "debug.h" +#include "scsiglue.h" + +#define DRV_NAME "ums-freecom" + +MODULE_DESCRIPTION("Driver for Freecom USB/IDE adaptor"); +MODULE_AUTHOR("David Brown "); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(USB_STORAGE); + +#ifdef CONFIG_USB_STORAGE_DEBUG +static void pdump(struct us_data *us, void *ibuffer, int length); +#endif + +/* Bits of HD_STATUS */ +#define ERR_STAT 0x01 +#define DRQ_STAT 0x08 + +/* All of the outgoing packets are 64 bytes long. */ +struct freecom_cb_wrap { + u8 Type; /* Command type. */ + u8 Timeout; /* Timeout in seconds. */ + u8 Atapi[12]; /* An ATAPI packet. */ + u8 Filler[50]; /* Padding Data. */ +}; + +struct freecom_xfer_wrap { + u8 Type; /* Command type. */ + u8 Timeout; /* Timeout in seconds. */ + __le32 Count; /* Number of bytes to transfer. */ + u8 Pad[58]; +} __attribute__ ((packed)); + +struct freecom_ide_out { + u8 Type; /* Type + IDE register. */ + u8 Pad; + __le16 Value; /* Value to write. */ + u8 Pad2[60]; +}; + +struct freecom_ide_in { + u8 Type; /* Type | IDE register. */ + u8 Pad[63]; +}; + +struct freecom_status { + u8 Status; + u8 Reason; + __le16 Count; + u8 Pad[60]; +}; + +/* + * Freecom stuffs the interrupt status in the INDEX_STAT bit of the ide + * register. + */ +#define FCM_INT_STATUS 0x02 /* INDEX_STAT */ +#define FCM_STATUS_BUSY 0x80 + +/* + * These are the packet types. The low bit indicates that this command + * should wait for an interrupt. + */ +#define FCM_PACKET_ATAPI 0x21 +#define FCM_PACKET_STATUS 0x20 + +/* + * Receive data from the IDE interface. The ATAPI packet has already + * waited, so the data should be immediately available. + */ +#define FCM_PACKET_INPUT 0x81 + +/* Send data to the IDE interface. */ +#define FCM_PACKET_OUTPUT 0x01 + +/* + * Write a value to an ide register. Or the ide register to write after + * munging the address a bit. + */ +#define FCM_PACKET_IDE_WRITE 0x40 +#define FCM_PACKET_IDE_READ 0xC0 + +/* All packets (except for status) are 64 bytes long. */ +#define FCM_PACKET_LENGTH 64 +#define FCM_STATUS_PACKET_LENGTH 4 + +static int init_freecom(struct us_data *us); + + +/* + * The table of devices + */ +#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ + vendorName, productName, useProtocol, useTransport, \ + initFunction, flags) \ +{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ + .driver_info = (flags) } + +static struct usb_device_id freecom_usb_ids[] = { +# include "unusual_freecom.h" + { } /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, freecom_usb_ids); + +#undef UNUSUAL_DEV + +/* + * The flags table + */ +#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ + vendor_name, product_name, use_protocol, use_transport, \ + init_function, Flags) \ +{ \ + .vendorName = vendor_name, \ + .productName = product_name, \ + .useProtocol = use_protocol, \ + .useTransport = use_transport, \ + .initFunction = init_function, \ +} + +static struct us_unusual_dev freecom_unusual_dev_list[] = { +# include "unusual_freecom.h" + { } /* Terminating entry */ +}; + +#undef UNUSUAL_DEV + +static int +freecom_readdata (struct scsi_cmnd *srb, struct us_data *us, + unsigned int ipipe, unsigned int opipe, int count) +{ + struct freecom_xfer_wrap *fxfr = + (struct freecom_xfer_wrap *) us->iobuf; + int result; + + fxfr->Type = FCM_PACKET_INPUT | 0x00; + fxfr->Timeout = 0; /* Short timeout for debugging. */ + fxfr->Count = cpu_to_le32 (count); + memset (fxfr->Pad, 0, sizeof (fxfr->Pad)); + + usb_stor_dbg(us, "Read data Freecom! (c=%d)\n", count); + + /* Issue the transfer command. */ + result = usb_stor_bulk_transfer_buf (us, opipe, fxfr, + FCM_PACKET_LENGTH, NULL); + if (result != USB_STOR_XFER_GOOD) { + usb_stor_dbg(us, "Freecom readdata transport error\n"); + return USB_STOR_TRANSPORT_ERROR; + } + + /* Now transfer all of our blocks. */ + usb_stor_dbg(us, "Start of read\n"); + result = usb_stor_bulk_srb(us, ipipe, srb); + usb_stor_dbg(us, "freecom_readdata done!\n"); + + if (result > USB_STOR_XFER_SHORT) + return USB_STOR_TRANSPORT_ERROR; + return USB_STOR_TRANSPORT_GOOD; +} + +static int +freecom_writedata (struct scsi_cmnd *srb, struct us_data *us, + int unsigned ipipe, unsigned int opipe, int count) +{ + struct freecom_xfer_wrap *fxfr = + (struct freecom_xfer_wrap *) us->iobuf; + int result; + + fxfr->Type = FCM_PACKET_OUTPUT | 0x00; + fxfr->Timeout = 0; /* Short timeout for debugging. */ + fxfr->Count = cpu_to_le32 (count); + memset (fxfr->Pad, 0, sizeof (fxfr->Pad)); + + usb_stor_dbg(us, "Write data Freecom! (c=%d)\n", count); + + /* Issue the transfer command. */ + result = usb_stor_bulk_transfer_buf (us, opipe, fxfr, + FCM_PACKET_LENGTH, NULL); + if (result != USB_STOR_XFER_GOOD) { + usb_stor_dbg(us, "Freecom writedata transport error\n"); + return USB_STOR_TRANSPORT_ERROR; + } + + /* Now transfer all of our blocks. */ + usb_stor_dbg(us, "Start of write\n"); + result = usb_stor_bulk_srb(us, opipe, srb); + + usb_stor_dbg(us, "freecom_writedata done!\n"); + if (result > USB_STOR_XFER_SHORT) + return USB_STOR_TRANSPORT_ERROR; + return USB_STOR_TRANSPORT_GOOD; +} + +/* + * Transport for the Freecom USB/IDE adaptor. + * + */ +static int freecom_transport(struct scsi_cmnd *srb, struct us_data *us) +{ + struct freecom_cb_wrap *fcb; + struct freecom_status *fst; + unsigned int ipipe, opipe; /* We need both pipes. */ + int result; + unsigned int partial; + int length; + + fcb = (struct freecom_cb_wrap *) us->iobuf; + fst = (struct freecom_status *) us->iobuf; + + usb_stor_dbg(us, "Freecom TRANSPORT STARTED\n"); + + /* Get handles for both transports. */ + opipe = us->send_bulk_pipe; + ipipe = us->recv_bulk_pipe; + + /* The ATAPI Command always goes out first. */ + fcb->Type = FCM_PACKET_ATAPI | 0x00; + fcb->Timeout = 0; + memcpy (fcb->Atapi, srb->cmnd, 12); + memset (fcb->Filler, 0, sizeof (fcb->Filler)); + + US_DEBUG(pdump(us, srb->cmnd, 12)); + + /* Send it out. */ + result = usb_stor_bulk_transfer_buf (us, opipe, fcb, + FCM_PACKET_LENGTH, NULL); + + /* + * The Freecom device will only fail if there is something wrong in + * USB land. It returns the status in its own registers, which + * come back in the bulk pipe. + */ + if (result != USB_STOR_XFER_GOOD) { + usb_stor_dbg(us, "freecom transport error\n"); + return USB_STOR_TRANSPORT_ERROR; + } + + /* + * There are times we can optimize out this status read, but it + * doesn't hurt us to always do it now. + */ + result = usb_stor_bulk_transfer_buf (us, ipipe, fst, + FCM_STATUS_PACKET_LENGTH, &partial); + usb_stor_dbg(us, "foo Status result %d %u\n", result, partial); + if (result != USB_STOR_XFER_GOOD) + return USB_STOR_TRANSPORT_ERROR; + + US_DEBUG(pdump(us, (void *)fst, partial)); + + /* + * The firmware will time-out commands after 20 seconds. Some commands + * can legitimately take longer than this, so we use a different + * command that only waits for the interrupt and then sends status, + * without having to send a new ATAPI command to the device. + * + * NOTE: There is some indication that a data transfer after a timeout + * may not work, but that is a condition that should never happen. + */ + while (fst->Status & FCM_STATUS_BUSY) { + usb_stor_dbg(us, "20 second USB/ATAPI bridge TIMEOUT occurred!\n"); + usb_stor_dbg(us, "fst->Status is %x\n", fst->Status); + + /* Get the status again */ + fcb->Type = FCM_PACKET_STATUS; + fcb->Timeout = 0; + memset (fcb->Atapi, 0, sizeof(fcb->Atapi)); + memset (fcb->Filler, 0, sizeof (fcb->Filler)); + + /* Send it out. */ + result = usb_stor_bulk_transfer_buf (us, opipe, fcb, + FCM_PACKET_LENGTH, NULL); + + /* + * The Freecom device will only fail if there is something + * wrong in USB land. It returns the status in its own + * registers, which come back in the bulk pipe. + */ + if (result != USB_STOR_XFER_GOOD) { + usb_stor_dbg(us, "freecom transport error\n"); + return USB_STOR_TRANSPORT_ERROR; + } + + /* get the data */ + result = usb_stor_bulk_transfer_buf (us, ipipe, fst, + FCM_STATUS_PACKET_LENGTH, &partial); + + usb_stor_dbg(us, "bar Status result %d %u\n", result, partial); + if (result != USB_STOR_XFER_GOOD) + return USB_STOR_TRANSPORT_ERROR; + + US_DEBUG(pdump(us, (void *)fst, partial)); + } + + if (partial != 4) + return USB_STOR_TRANSPORT_ERROR; + if ((fst->Status & 1) != 0) { + usb_stor_dbg(us, "operation failed\n"); + return USB_STOR_TRANSPORT_FAILED; + } + + /* + * The device might not have as much data available as we + * requested. If you ask for more than the device has, this reads + * and such will hang. + */ + usb_stor_dbg(us, "Device indicates that it has %d bytes available\n", + le16_to_cpu(fst->Count)); + usb_stor_dbg(us, "SCSI requested %d\n", scsi_bufflen(srb)); + + /* Find the length we desire to read. */ + switch (srb->cmnd[0]) { + case INQUIRY: + case REQUEST_SENSE: /* 16 or 18 bytes? spec says 18, lots of devices only have 16 */ + case MODE_SENSE: + case MODE_SENSE_10: + length = le16_to_cpu(fst->Count); + break; + default: + length = scsi_bufflen(srb); + } + + /* verify that this amount is legal */ + if (length > scsi_bufflen(srb)) { + length = scsi_bufflen(srb); + usb_stor_dbg(us, "Truncating request to match buffer length: %d\n", + length); + } + + /* + * What we do now depends on what direction the data is supposed to + * move in. + */ + + switch (us->srb->sc_data_direction) { + case DMA_FROM_DEVICE: + /* catch bogus "read 0 length" case */ + if (!length) + break; + /* + * Make sure that the status indicates that the device + * wants data as well. + */ + if ((fst->Status & DRQ_STAT) == 0 || (fst->Reason & 3) != 2) { + usb_stor_dbg(us, "SCSI wants data, drive doesn't have any\n"); + return USB_STOR_TRANSPORT_FAILED; + } + result = freecom_readdata (srb, us, ipipe, opipe, length); + if (result != USB_STOR_TRANSPORT_GOOD) + return result; + + usb_stor_dbg(us, "Waiting for status\n"); + result = usb_stor_bulk_transfer_buf (us, ipipe, fst, + FCM_PACKET_LENGTH, &partial); + US_DEBUG(pdump(us, (void *)fst, partial)); + + if (partial != 4 || result > USB_STOR_XFER_SHORT) + return USB_STOR_TRANSPORT_ERROR; + if ((fst->Status & ERR_STAT) != 0) { + usb_stor_dbg(us, "operation failed\n"); + return USB_STOR_TRANSPORT_FAILED; + } + if ((fst->Reason & 3) != 3) { + usb_stor_dbg(us, "Drive seems still hungry\n"); + return USB_STOR_TRANSPORT_FAILED; + } + usb_stor_dbg(us, "Transfer happy\n"); + break; + + case DMA_TO_DEVICE: + /* catch bogus "write 0 length" case */ + if (!length) + break; + /* + * Make sure the status indicates that the device wants to + * send us data. + */ + /* !!IMPLEMENT!! */ + result = freecom_writedata (srb, us, ipipe, opipe, length); + if (result != USB_STOR_TRANSPORT_GOOD) + return result; + + usb_stor_dbg(us, "Waiting for status\n"); + result = usb_stor_bulk_transfer_buf (us, ipipe, fst, + FCM_PACKET_LENGTH, &partial); + + if (partial != 4 || result > USB_STOR_XFER_SHORT) + return USB_STOR_TRANSPORT_ERROR; + if ((fst->Status & ERR_STAT) != 0) { + usb_stor_dbg(us, "operation failed\n"); + return USB_STOR_TRANSPORT_FAILED; + } + if ((fst->Reason & 3) != 3) { + usb_stor_dbg(us, "Drive seems still hungry\n"); + return USB_STOR_TRANSPORT_FAILED; + } + + usb_stor_dbg(us, "Transfer happy\n"); + break; + + + case DMA_NONE: + /* Easy, do nothing. */ + break; + + default: + /* should never hit here -- filtered in usb.c */ + usb_stor_dbg(us, "freecom unimplemented direction: %d\n", + us->srb->sc_data_direction); + /* Return fail, SCSI seems to handle this better. */ + return USB_STOR_TRANSPORT_FAILED; + } + + return USB_STOR_TRANSPORT_GOOD; +} + +static int init_freecom(struct us_data *us) +{ + int result; + char *buffer = us->iobuf; + + /* + * The DMA-mapped I/O buffer is 64 bytes long, just right for + * all our packets. No need to allocate any extra buffer space. + */ + + result = usb_stor_control_msg(us, us->recv_ctrl_pipe, + 0x4c, 0xc0, 0x4346, 0x0, buffer, 0x20, 3*HZ); + buffer[32] = '\0'; + usb_stor_dbg(us, "String returned from FC init is: %s\n", buffer); + + /* + * Special thanks to the people at Freecom for providing me with + * this "magic sequence", which they use in their Windows and MacOS + * drivers to make sure that all the attached perhiperals are + * properly reset. + */ + + /* send reset */ + result = usb_stor_control_msg(us, us->send_ctrl_pipe, + 0x4d, 0x40, 0x24d8, 0x0, NULL, 0x0, 3*HZ); + usb_stor_dbg(us, "result from activate reset is %d\n", result); + + /* wait 250ms */ + msleep(250); + + /* clear reset */ + result = usb_stor_control_msg(us, us->send_ctrl_pipe, + 0x4d, 0x40, 0x24f8, 0x0, NULL, 0x0, 3*HZ); + usb_stor_dbg(us, "result from clear reset is %d\n", result); + + /* wait 3 seconds */ + msleep(3 * 1000); + + return USB_STOR_TRANSPORT_GOOD; +} + +static int usb_stor_freecom_reset(struct us_data *us) +{ + printk (KERN_CRIT "freecom reset called\n"); + + /* We don't really have this feature. */ + return FAILED; +} + +#ifdef CONFIG_USB_STORAGE_DEBUG +static void pdump(struct us_data *us, void *ibuffer, int length) +{ + static char line[80]; + int offset = 0; + unsigned char *buffer = (unsigned char *) ibuffer; + int i, j; + int from, base; + + offset = 0; + for (i = 0; i < length; i++) { + if ((i & 15) == 0) { + if (i > 0) { + offset += sprintf (line+offset, " - "); + for (j = i - 16; j < i; j++) { + if (buffer[j] >= 32 && buffer[j] <= 126) + line[offset++] = buffer[j]; + else + line[offset++] = '.'; + } + line[offset] = 0; + usb_stor_dbg(us, "%s\n", line); + offset = 0; + } + offset += sprintf (line+offset, "%08x:", i); + } else if ((i & 7) == 0) { + offset += sprintf (line+offset, " -"); + } + offset += sprintf (line+offset, " %02x", buffer[i] & 0xff); + } + + /* Add the last "chunk" of data. */ + from = (length - 1) % 16; + base = ((length - 1) / 16) * 16; + + for (i = from + 1; i < 16; i++) + offset += sprintf (line+offset, " "); + if (from < 8) + offset += sprintf (line+offset, " "); + offset += sprintf (line+offset, " - "); + + for (i = 0; i <= from; i++) { + if (buffer[base+i] >= 32 && buffer[base+i] <= 126) + line[offset++] = buffer[base+i]; + else + line[offset++] = '.'; + } + line[offset] = 0; + usb_stor_dbg(us, "%s\n", line); + offset = 0; +} +#endif + +static struct scsi_host_template freecom_host_template; + +static int freecom_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct us_data *us; + int result; + + result = usb_stor_probe1(&us, intf, id, + (id - freecom_usb_ids) + freecom_unusual_dev_list, + &freecom_host_template); + if (result) + return result; + + us->transport_name = "Freecom"; + us->transport = freecom_transport; + us->transport_reset = usb_stor_freecom_reset; + us->max_lun = 0; + + result = usb_stor_probe2(us); + return result; +} + +static struct usb_driver freecom_driver = { + .name = DRV_NAME, + .probe = freecom_probe, + .disconnect = usb_stor_disconnect, + .suspend = usb_stor_suspend, + .resume = usb_stor_resume, + .reset_resume = usb_stor_reset_resume, + .pre_reset = usb_stor_pre_reset, + .post_reset = usb_stor_post_reset, + .id_table = freecom_usb_ids, + .soft_unbind = 1, + .no_dynamic_id = 1, +}; + +module_usb_stor_driver(freecom_driver, freecom_host_template, DRV_NAME); -- cgit v1.2.3