#include <linux/mm.h>
#include <linux/init.h>
#include <linux/device.h>
+#include <linux/smp_lock.h>
+#include <linux/firmware.h>
+#include <linux/platform_device.h>
#include <asm/atarihw.h>
#include <asm/traps.h>
} \
}
-/* DSP56001 bootstrap code */
-static char bootstrap[] = {
- 0x0c, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x60, 0xf4, 0x00, 0x00, 0x00, 0x4f, 0x61, 0xf4,
- 0x00, 0x00, 0x7e, 0xa9, 0x06, 0x2e, 0x80, 0x00, 0x00, 0x47,
- 0x07, 0xd8, 0x84, 0x07, 0x59, 0x84, 0x08, 0xf4, 0xa8, 0x00,
- 0x00, 0x04, 0x08, 0xf4, 0xbf, 0x00, 0x0c, 0x00, 0x00, 0xfe,
- 0xb8, 0x0a, 0xf0, 0x80, 0x00, 0x7e, 0xa9, 0x08, 0xf4, 0xa0,
- 0x00, 0x00, 0x01, 0x08, 0xf4, 0xbe, 0x00, 0x00, 0x00, 0x0a,
- 0xa9, 0x80, 0x00, 0x7e, 0xad, 0x08, 0x4e, 0x2b, 0x44, 0xf4,
- 0x00, 0x00, 0x00, 0x03, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x01,
- 0x0e, 0xa0, 0x00, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb5, 0x08,
- 0x50, 0x2b, 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xb8, 0x08, 0x46,
- 0x2b, 0x44, 0xf4, 0x45, 0x00, 0x00, 0x02, 0x0a, 0xf0, 0xaa,
- 0x00, 0x7e, 0xc9, 0x20, 0x00, 0x45, 0x0a, 0xf0, 0xaa, 0x00,
- 0x7e, 0xd0, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xc6, 0x0a, 0xa9,
- 0x80, 0x00, 0x7e, 0xc4, 0x08, 0x58, 0x6b, 0x0a, 0xf0, 0x80,
- 0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xcd, 0x0a,
- 0xa9, 0x80, 0x00, 0x7e, 0xcb, 0x08, 0x58, 0xab, 0x0a, 0xf0,
- 0x80, 0x00, 0x7e, 0xad, 0x06, 0xc6, 0x00, 0x00, 0x7e, 0xd4,
- 0x0a, 0xa9, 0x80, 0x00, 0x7e, 0xd2, 0x08, 0x58, 0xeb, 0x0a,
- 0xf0, 0x80, 0x00, 0x7e, 0xad};
-static int sizeof_bootstrap = 375;
-
-
static struct dsp56k_device {
- long in_use;
+ unsigned long in_use;
long maxio, timeout;
int tx_wsize, rx_wsize;
} dsp56k;
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;
- u_char *p;
-
+
dsp56k_reset();
-
- p = bootstrap;
- for (i = 0; i < sizeof_bootstrap/3; i++) {
+
+ 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] = *p++;
- dsp56k_host_interface.data.b[2] = *p++;
- dsp56k_host_interface.data.b[3] = *p++;
+ 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;
static int dsp56k_open(struct inode *inode, struct file *file)
{
int dev = iminor(inode) & 0x0f;
+ int ret = 0;
+ lock_kernel();
switch(dev)
{
case DSP56K_DEV_56001:
- if (test_and_set_bit(0, &dsp56k.in_use))
- return -EBUSY;
+ if (test_and_set_bit(0, &dsp56k.in_use)) {
+ ret = -EBUSY;
+ goto out;
+ }
dsp56k.timeout = TIMEOUT;
dsp56k.maxio = MAXIO;
break;
default:
- return -ENODEV;
+ ret = -ENODEV;
}
-
- return 0;
+out:
+ unlock_kernel();
+ return ret;
}
static int dsp56k_release(struct inode *inode, struct file *file)
err = PTR_ERR(dsp56k_class);
goto out_chrdev;
}
- class_device_create(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k");
+ device_create_drvdata(dsp56k_class, NULL, MKDEV(DSP56K_MAJOR, 0),
+ NULL, "dsp56k");
printk(banner);
goto out;
static void __exit dsp56k_cleanup_driver(void)
{
- class_device_destroy(dsp56k_class, MKDEV(DSP56K_MAJOR, 0));
+ 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");