| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 1556 | 73.81% | 12 | 30.77% |
| Jaswinder Singh Rajput | 233 | 11.05% | 1 | 2.56% |
| Hanna V. Linder | 82 | 3.89% | 1 | 2.56% |
| Arnd Bergmann | 72 | 3.42% | 2 | 5.13% |
| Linus Torvalds | 48 | 2.28% | 4 | 10.26% |
| Al Viro | 44 | 2.09% | 5 | 12.82% |
| Jonathan Corbet | 23 | 1.09% | 1 | 2.56% |
| Alan Cox | 16 | 0.76% | 1 | 2.56% |
| Art Haas | 12 | 0.57% | 1 | 2.56% |
| Greg Kroah-Hartman | 12 | 0.57% | 5 | 12.82% |
| Geert Uytterhoeven | 5 | 0.24% | 2 | 5.13% |
| Kees Cook | 2 | 0.09% | 1 | 2.56% |
| Dan Carpenter | 1 | 0.05% | 1 | 2.56% |
| Arjan van de Ven | 1 | 0.05% | 1 | 2.56% |
| Tony Jones | 1 | 0.05% | 1 | 2.56% |
| Total | 2108 | 39 |
/* * The DSP56001 Device Driver, saviour of the Free World(tm) * * Authors: Fredrik Noring <noring@nocrew.org> * lars brinkhoff <lars@nocrew.org> * Tomas Berndtsson <tomas@nocrew.org> * * 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 <linux/module.h> #include <linux/major.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/delay.h> /* guess what */ #include <linux/fs.h> #include <linux/mm.h> #include <linux/init.h> #include <linux/device.h> #include <linux/mutex.h> #include <linux/firmware.h> #include <linux/platform_device.h> #include <linux/uaccess.h> /* For put_user and get_user */ #include <asm/atarihw.h> #include <asm/traps.h> #include <asm/dsp56k.h> /* 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");
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