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/char/dsp56k.c | 534 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 534 insertions(+) create mode 100644 drivers/char/dsp56k.c (limited to 'drivers/char/dsp56k.c') diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c new file mode 100644 index 000000000..06749e295 --- /dev/null +++ b/drivers/char/dsp56k.c @@ -0,0 +1,534 @@ +/* + * The DSP56001 Device Driver, saviour of the Free World(tm) + * + * Authors: Fredrik Noring + * lars brinkhoff + * Tomas Berndtsson + * + * First version May 1996 + * + * History: + * 97-01-29 Tomas Berndtsson, + * Integrated with Linux 2.1.21 kernel sources. + * 97-02-15 Tomas Berndtsson, + * Fixed for kernel 2.1.26 + * + * BUGS: + * Hmm... there must be something here :) + * + * Copyright (C) 1996,1997 Fredrik Noring, lars brinkhoff & Tomas Berndtsson + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include +#include +#include +#include +#include /* guess what */ +#include +#include +#include +#include +#include +#include +#include +#include /* For put_user and get_user */ + +#include +#include + +#include + +/* minor devices */ +#define DSP56K_DEV_56001 0 /* The only device so far */ + +#define TIMEOUT 10 /* Host port timeout in number of tries */ +#define MAXIO 2048 /* Maximum number of words before sleep */ +#define DSP56K_MAX_BINARY_LENGTH (3*64*1024) + +#define DSP56K_TX_INT_ON dsp56k_host_interface.icr |= DSP56K_ICR_TREQ +#define DSP56K_RX_INT_ON dsp56k_host_interface.icr |= DSP56K_ICR_RREQ +#define DSP56K_TX_INT_OFF dsp56k_host_interface.icr &= ~DSP56K_ICR_TREQ +#define DSP56K_RX_INT_OFF dsp56k_host_interface.icr &= ~DSP56K_ICR_RREQ + +#define DSP56K_TRANSMIT (dsp56k_host_interface.isr & DSP56K_ISR_TXDE) +#define DSP56K_RECEIVE (dsp56k_host_interface.isr & DSP56K_ISR_RXDF) + +#define handshake(count, maxio, timeout, ENABLE, f) \ +{ \ + long i, t, m; \ + while (count > 0) { \ + m = min_t(unsigned long, count, maxio); \ + for (i = 0; i < m; i++) { \ + for (t = 0; t < timeout && !ENABLE; t++) \ + msleep(20); \ + if(!ENABLE) \ + return -EIO; \ + f; \ + } \ + count -= m; \ + if (m == maxio) msleep(20); \ + } \ +} + +#define tx_wait(n) \ +{ \ + int t; \ + for(t = 0; t < n && !DSP56K_TRANSMIT; t++) \ + msleep(10); \ + if(!DSP56K_TRANSMIT) { \ + return -EIO; \ + } \ +} + +#define rx_wait(n) \ +{ \ + int t; \ + for(t = 0; t < n && !DSP56K_RECEIVE; t++) \ + msleep(10); \ + if(!DSP56K_RECEIVE) { \ + return -EIO; \ + } \ +} + +static DEFINE_MUTEX(dsp56k_mutex); +static struct dsp56k_device { + unsigned long in_use; + long maxio, timeout; + int tx_wsize, rx_wsize; +} dsp56k; + +static struct class *dsp56k_class; + +static int dsp56k_reset(void) +{ + u_char status; + + /* Power down the DSP */ + sound_ym.rd_data_reg_sel = 14; + status = sound_ym.rd_data_reg_sel & 0xef; + sound_ym.wd_data = status; + sound_ym.wd_data = status | 0x10; + + udelay(10); + + /* Power up the DSP */ + sound_ym.rd_data_reg_sel = 14; + sound_ym.wd_data = sound_ym.rd_data_reg_sel & 0xef; + + return 0; +} + +static int dsp56k_upload(u_char __user *bin, int len) +{ + struct platform_device *pdev; + const struct firmware *fw; + const char fw_name[] = "dsp56k/bootstrap.bin"; + int err; + int i; + + dsp56k_reset(); + + pdev = platform_device_register_simple("dsp56k", 0, NULL, 0); + if (IS_ERR(pdev)) { + printk(KERN_ERR "Failed to register device for \"%s\"\n", + fw_name); + return -EINVAL; + } + err = request_firmware(&fw, fw_name, &pdev->dev); + platform_device_unregister(pdev); + if (err) { + printk(KERN_ERR "Failed to load image \"%s\" err %d\n", + fw_name, err); + return err; + } + if (fw->size % 3) { + printk(KERN_ERR "Bogus length %d in image \"%s\"\n", + fw->size, fw_name); + release_firmware(fw); + return -EINVAL; + } + for (i = 0; i < fw->size; i = i + 3) { + /* tx_wait(10); */ + dsp56k_host_interface.data.b[1] = fw->data[i]; + dsp56k_host_interface.data.b[2] = fw->data[i + 1]; + dsp56k_host_interface.data.b[3] = fw->data[i + 2]; + } + release_firmware(fw); + for (; i < 512; i++) { + /* tx_wait(10); */ + dsp56k_host_interface.data.b[1] = 0; + dsp56k_host_interface.data.b[2] = 0; + dsp56k_host_interface.data.b[3] = 0; + } + + for (i = 0; i < len; i++) { + tx_wait(10); + get_user(dsp56k_host_interface.data.b[1], bin++); + get_user(dsp56k_host_interface.data.b[2], bin++); + get_user(dsp56k_host_interface.data.b[3], bin++); + } + + tx_wait(10); + dsp56k_host_interface.data.l = 3; /* Magic execute */ + + return 0; +} + +static ssize_t dsp56k_read(struct file *file, char __user *buf, size_t count, + loff_t *ppos) +{ + struct inode *inode = file_inode(file); + int dev = iminor(inode) & 0x0f; + + switch(dev) + { + case DSP56K_DEV_56001: + { + + long n; + + /* Don't do anything if nothing is to be done */ + if (!count) return 0; + + n = 0; + switch (dsp56k.rx_wsize) { + case 1: /* 8 bit */ + { + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE, + put_user(dsp56k_host_interface.data.b[3], buf+n++)); + return n; + } + case 2: /* 16 bit */ + { + short __user *data; + + count /= 2; + data = (short __user *) buf; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE, + put_user(dsp56k_host_interface.data.w[1], data+n++)); + return 2*n; + } + case 3: /* 24 bit */ + { + count /= 3; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE, + put_user(dsp56k_host_interface.data.b[1], buf+n++); + put_user(dsp56k_host_interface.data.b[2], buf+n++); + put_user(dsp56k_host_interface.data.b[3], buf+n++)); + return 3*n; + } + case 4: /* 32 bit */ + { + long __user *data; + + count /= 4; + data = (long __user *) buf; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_RECEIVE, + put_user(dsp56k_host_interface.data.l, data+n++)); + return 4*n; + } + } + return -EFAULT; + } + + default: + printk(KERN_ERR "DSP56k driver: Unknown minor device: %d\n", dev); + return -ENXIO; + } +} + +static ssize_t dsp56k_write(struct file *file, const char __user *buf, size_t count, + loff_t *ppos) +{ + struct inode *inode = file_inode(file); + int dev = iminor(inode) & 0x0f; + + switch(dev) + { + case DSP56K_DEV_56001: + { + long n; + + /* Don't do anything if nothing is to be done */ + if (!count) return 0; + + n = 0; + switch (dsp56k.tx_wsize) { + case 1: /* 8 bit */ + { + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT, + get_user(dsp56k_host_interface.data.b[3], buf+n++)); + return n; + } + case 2: /* 16 bit */ + { + const short __user *data; + + count /= 2; + data = (const short __user *)buf; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT, + get_user(dsp56k_host_interface.data.w[1], data+n++)); + return 2*n; + } + case 3: /* 24 bit */ + { + count /= 3; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT, + get_user(dsp56k_host_interface.data.b[1], buf+n++); + get_user(dsp56k_host_interface.data.b[2], buf+n++); + get_user(dsp56k_host_interface.data.b[3], buf+n++)); + return 3*n; + } + case 4: /* 32 bit */ + { + const long __user *data; + + count /= 4; + data = (const long __user *)buf; + handshake(count, dsp56k.maxio, dsp56k.timeout, DSP56K_TRANSMIT, + get_user(dsp56k_host_interface.data.l, data+n++)); + return 4*n; + } + } + + return -EFAULT; + } + default: + printk(KERN_ERR "DSP56k driver: Unknown minor device: %d\n", dev); + return -ENXIO; + } +} + +static long dsp56k_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + int dev = iminor(file_inode(file)) & 0x0f; + void __user *argp = (void __user *)arg; + + switch(dev) + { + case DSP56K_DEV_56001: + + switch(cmd) { + case DSP56K_UPLOAD: + { + char __user *bin; + int r, len; + struct dsp56k_upload __user *binary = argp; + + if(get_user(len, &binary->len) < 0) + return -EFAULT; + if(get_user(bin, &binary->bin) < 0) + return -EFAULT; + + if (len <= 0) { + return -EINVAL; /* nothing to upload?!? */ + } + if (len > DSP56K_MAX_BINARY_LENGTH) { + return -EINVAL; + } + mutex_lock(&dsp56k_mutex); + r = dsp56k_upload(bin, len); + mutex_unlock(&dsp56k_mutex); + if (r < 0) { + return r; + } + + break; + } + case DSP56K_SET_TX_WSIZE: + if (arg > 4 || arg < 1) + return -EINVAL; + mutex_lock(&dsp56k_mutex); + dsp56k.tx_wsize = (int) arg; + mutex_unlock(&dsp56k_mutex); + break; + case DSP56K_SET_RX_WSIZE: + if (arg > 4 || arg < 1) + return -EINVAL; + mutex_lock(&dsp56k_mutex); + dsp56k.rx_wsize = (int) arg; + mutex_unlock(&dsp56k_mutex); + break; + case DSP56K_HOST_FLAGS: + { + int dir, out, status; + struct dsp56k_host_flags __user *hf = argp; + + if(get_user(dir, &hf->dir) < 0) + return -EFAULT; + if(get_user(out, &hf->out) < 0) + return -EFAULT; + + mutex_lock(&dsp56k_mutex); + if ((dir & 0x1) && (out & 0x1)) + dsp56k_host_interface.icr |= DSP56K_ICR_HF0; + else if (dir & 0x1) + dsp56k_host_interface.icr &= ~DSP56K_ICR_HF0; + if ((dir & 0x2) && (out & 0x2)) + dsp56k_host_interface.icr |= DSP56K_ICR_HF1; + else if (dir & 0x2) + dsp56k_host_interface.icr &= ~DSP56K_ICR_HF1; + + status = 0; + if (dsp56k_host_interface.icr & DSP56K_ICR_HF0) status |= 0x1; + if (dsp56k_host_interface.icr & DSP56K_ICR_HF1) status |= 0x2; + if (dsp56k_host_interface.isr & DSP56K_ISR_HF2) status |= 0x4; + if (dsp56k_host_interface.isr & DSP56K_ISR_HF3) status |= 0x8; + mutex_unlock(&dsp56k_mutex); + return put_user(status, &hf->status); + } + case DSP56K_HOST_CMD: + if (arg > 31) + return -EINVAL; + mutex_lock(&dsp56k_mutex); + dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) | + DSP56K_CVR_HC); + mutex_unlock(&dsp56k_mutex); + break; + default: + return -EINVAL; + } + return 0; + + default: + printk(KERN_ERR "DSP56k driver: Unknown minor device: %d\n", dev); + return -ENXIO; + } +} + +/* As of 2.1.26 this should be dsp56k_poll, + * but how do I then check device minor number? + * Do I need this function at all??? + */ +#if 0 +static __poll_t dsp56k_poll(struct file *file, poll_table *wait) +{ + int dev = iminor(file_inode(file)) & 0x0f; + + switch(dev) + { + case DSP56K_DEV_56001: + /* poll_wait(file, ???, wait); */ + return EPOLLIN | EPOLLRDNORM | EPOLLOUT; + + default: + printk("DSP56k driver: Unknown minor device: %d\n", dev); + return 0; + } +} +#endif + +static int dsp56k_open(struct inode *inode, struct file *file) +{ + int dev = iminor(inode) & 0x0f; + int ret = 0; + + mutex_lock(&dsp56k_mutex); + switch(dev) + { + case DSP56K_DEV_56001: + + if (test_and_set_bit(0, &dsp56k.in_use)) { + ret = -EBUSY; + goto out; + } + + dsp56k.timeout = TIMEOUT; + dsp56k.maxio = MAXIO; + dsp56k.rx_wsize = dsp56k.tx_wsize = 4; + + DSP56K_TX_INT_OFF; + DSP56K_RX_INT_OFF; + + /* Zero host flags */ + dsp56k_host_interface.icr &= ~DSP56K_ICR_HF0; + dsp56k_host_interface.icr &= ~DSP56K_ICR_HF1; + + break; + + default: + ret = -ENODEV; + } +out: + mutex_unlock(&dsp56k_mutex); + return ret; +} + +static int dsp56k_release(struct inode *inode, struct file *file) +{ + int dev = iminor(inode) & 0x0f; + + switch(dev) + { + case DSP56K_DEV_56001: + clear_bit(0, &dsp56k.in_use); + break; + default: + printk(KERN_ERR "DSP56k driver: Unknown minor device: %d\n", dev); + return -ENXIO; + } + + return 0; +} + +static const struct file_operations dsp56k_fops = { + .owner = THIS_MODULE, + .read = dsp56k_read, + .write = dsp56k_write, + .unlocked_ioctl = dsp56k_ioctl, + .open = dsp56k_open, + .release = dsp56k_release, + .llseek = noop_llseek, +}; + + +/****** Init and module functions ******/ + +static const char banner[] __initconst = KERN_INFO "DSP56k driver installed\n"; + +static int __init dsp56k_init_driver(void) +{ + int err = 0; + + if(!MACH_IS_ATARI || !ATARIHW_PRESENT(DSP56K)) { + printk("DSP56k driver: Hardware not present\n"); + return -ENODEV; + } + + if(register_chrdev(DSP56K_MAJOR, "dsp56k", &dsp56k_fops)) { + printk("DSP56k driver: Unable to register driver\n"); + return -ENODEV; + } + dsp56k_class = class_create(THIS_MODULE, "dsp56k"); + if (IS_ERR(dsp56k_class)) { + err = PTR_ERR(dsp56k_class); + goto out_chrdev; + } + device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, + "dsp56k"); + + printk(banner); + goto out; + +out_chrdev: + unregister_chrdev(DSP56K_MAJOR, "dsp56k"); +out: + return err; +} +module_init(dsp56k_init_driver); + +static void __exit dsp56k_cleanup_driver(void) +{ + device_destroy(dsp56k_class, MKDEV(DSP56K_MAJOR, 0)); + class_destroy(dsp56k_class); + unregister_chrdev(DSP56K_MAJOR, "dsp56k"); +} +module_exit(dsp56k_cleanup_driver); + +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("dsp56k/bootstrap.bin"); -- cgit v1.2.3