#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
-#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
continue;
/* do not map BARs with address 0 */
if (!bar_start || !bar_end) {
- printk(KERN_DEBUG "BAR #%d is not present?!\n", i);
+ printk(KERN_DEBUG "BAR #%d is not present?!\n", i);
rc = -1;
goto fail;
}
bar_length = bar_end - bar_start + 1;
/* BAR length is less than driver requires? */
if (bar_length < bar_min_len[i]) {
- printk(KERN_DEBUG "BAR #%d length = %lu bytes but driver "
- "requires at least %lu bytes\n", i, bar_length, bar_min_len[i]);
+ printk(KERN_DEBUG "BAR #%d length = %lu bytes but driver "
+ "requires at least %lu bytes\n",
+ i, bar_length, bar_min_len[i]);
rc = -1;
goto fail;
}
rc = -1;
goto fail;
}
- printk(KERN_DEBUG "BAR[%d] mapped at 0x%p with length %lu(/%lu).\n", i,
- ape->bar[i], bar_min_len[i], bar_length);
+ printk(KERN_DEBUG "BAR[%d] mapped at 0x%p with length %lu(/%lu).\n", i,
+ ape->bar[i], bar_min_len[i], bar_length);
}
/* succesfully mapped all required BAR regions */
rc = 0;
dma_addr_t next = sg_dma_address(&sgl[i + 1]);
/* length of this entry i */
len = sg_dma_len(&sgl[i]);
- printk(KERN_DEBUG "%04d: addr=0x%08x length=0x%08x\n", i, addr, len);
+ printk(KERN_DEBUG "%04d: addr=0x%Lx length=0x%08x\n", i,
+ (unsigned long long)addr, len);
/* entry i + 1 is non-contiguous with entry i? */
if (next != addr + len) {
/* TODO create entry here (we could overwrite i) */
- printk(KERN_DEBUG "%4d: cont_addr=0x%08x cont_len=0x%08x\n", j, cont_addr, cont_len);
+ printk(KERN_DEBUG "%4d: cont_addr=0x%Lx cont_len=0x%08x\n", j,
+ (unsigned long long)cont_addr, cont_len);
/* set descriptor for contiguous transfer */
ape_chdma_desc_set(&desc[j], cont_addr, ep_addr, cont_len);
/* next end point memory address */
addr = next;
}
/* TODO create entry here (we could overwrite i) */
- printk(KERN_DEBUG "%04d: addr=0x%08x length=0x%08x\n", i, addr, len);
- printk(KERN_DEBUG "%4d: cont_addr=0x%08x length=0x%08x\n", j, cont_addr, cont_len);
+ printk(KERN_DEBUG "%04d: addr=0x%Lx length=0x%08x\n", i,
+ (unsigned long long)addr, len);
+ printk(KERN_DEBUG "%4d: cont_addr=0x%Lx length=0x%08x\n", j,
+ (unsigned long long)cont_addr, cont_len);
j++;
return j;
}
} else {
fail++;
/* show the first few miscompares */
- if (fail < 10) {
- printk(KERN_DEBUG "[%p] = 0x%08x != [%p] = 0x%08x ?!\n", p, *p, q, *q);
- /* but stop after a while */
- } else if (fail == 10) {
- printk(KERN_DEBUG "---more errors follow! not printed---\n");
- } else {
+ if (fail < 10)
+ printk(KERN_DEBUG "[%p] = 0x%08x != [%p] = 0x%08x ?!\n", p, *p, q, *q);
+ /* but stop after a while */
+ else if (fail == 10)
+ printk(KERN_DEBUG "---more errors follow! not printed---\n");
+ else
/* stop compare after this many errors */
- break;
- }
+ break;
}
p++;
q++;
printk(KERN_DEBUG "ape->table_virt = 0x%p.\n", ape->table_virt);
if (!write_header || !read_header || !ape->table_virt)
- goto fail;
+ goto fail;
/* allocate and map coherently-cached memory for a DMA-able buffer */
/* @see Documentation/PCI/PCI-DMA-mapping.txt, near line 318 */
/* read 8192 bytes from RC buffer to EP address 4096 */
ape_chdma_desc_set(&ape->table_virt->desc[n], buffer_bus, 4096, 2 * PAGE_SIZE);
#if 1
- for (i = 0; i < 255; i++) {
+ for (i = 0; i < 255; i++)
ape_chdma_desc_set(&ape->table_virt->desc[i], buffer_bus, 4096, 2 * PAGE_SIZE);
- }
/* index of last descriptor */
n = i - 1;
#endif
printk(KERN_DEBUG "EPLAST = %u, n = %d\n", eplast, n);
if (eplast == n) {
printk(KERN_DEBUG "DONE\n");
- /* print IRQ count before the transfer */
+ /* print IRQ count before the transfer */
printk(KERN_DEBUG "#IRQs during transfer: %d\n", ape->irq_count - irq_count);
break;
}
n = 0;
ape_chdma_desc_set(&ape->table_virt->desc[n], buffer_bus + 8192, 4096, 2 * PAGE_SIZE);
#if 1
- for (i = 0; i < 255; i++) {
+ for (i = 0; i < 255; i++)
ape_chdma_desc_set(&ape->table_virt->desc[i], buffer_bus + 8192, 4096, 2 * PAGE_SIZE);
- }
+
/* index of last descriptor */
n = i - 1;
#endif
w = (u32)(n + 1);
/* enable updates of eplast for each descriptor completion */
w |= (u32)(1UL << 18)/*global EPLAST_EN*/;
-#if 0 // test variable, make a module option later
+#if 0 /* test variable, make a module option later */
/* enable MSI for each descriptor completion */
if (ape->msi_enabled)
w |= (1UL << 17)/*global MSI*/;
/** memory write barrier */
wmb();
/** dummy read to flush posted writes */
- //(void)ioread32();
+ /* (void) ioread32(); */
printk(KERN_DEBUG "POLL FOR WRITE:\n");
/* poll for completion, 1000 times 1 millisecond */
}
ape->got_regions = 1;
-#if 1 // @todo For now, disable 64-bit, because I do not understand the implications (DAC!)
+#if 1 /* @todo For now, disable 64-bit, because I do not understand the implications (DAC!) */
/* query for DMA transfer */
/* @see Documentation/PCI/PCI-DMA-mapping.txt */
- if (!pci_set_dma_mask(dev, DMA_64BIT_MASK)) {
- pci_set_consistent_dma_mask(dev, DMA_64BIT_MASK);
+ if (!pci_set_dma_mask(dev, DMA_BIT_MASK(64))) {
+ pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(64));
/* use 64-bit DMA */
printk(KERN_DEBUG "Using a 64-bit DMA mask.\n");
} else
#endif
- if (!pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
+ if (!pci_set_dma_mask(dev, DMA_BIT_MASK(32))) {
printk(KERN_DEBUG "Could not set 64-bit DMA mask.\n");
- pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK);
+ pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(32));
/* use 32-bit DMA */
printk(KERN_DEBUG "Using a 32-bit DMA mask.\n");
} else {
struct ape_dev *ape;
printk(KERN_DEBUG "remove(0x%p)\n", dev);
if ((dev == 0) || (dev->dev.driver_data == 0)) {
- printk(KERN_DEBUG "remove(dev = 0x%p) dev->dev.driver_data = 0x%p\n", dev, dev->dev.driver_data);
+ printk(KERN_DEBUG "remove(dev = 0x%p) dev->dev.driver_data = 0x%p\n",
+ dev, (dev? dev->dev.driver_data: NULL));
return;
}
ape = (struct ape_dev *)dev->dev.driver_data;
printk(KERN_DEBUG DRV_NAME "_write(buf=0x%p, count=%lld, pos=%llu)\n",
buf, (s64)count, (u64)*pos);
/* TODO transfer boundaries at PAGE_SIZE granularity */
- while (remaining > 0)
- {
+ while (remaining > 0) {
/* limit DMA transfer size */
- transfer_len = (remaining < APE_CHDMA_MAX_TRANSFER_LEN)? remaining:
+ transfer_len = (remaining < APE_CHDMA_MAX_TRANSFER_LEN) ? remaining :
APE_CHDMA_MAX_TRANSFER_LEN;
/* get all user space buffer pages and create a scattergather list */
sgm_map_user_pages(ape->sgm, transfer_addr, transfer_len, 0/*read from userspace*/);
/*
* character device file operations
*/
-static struct file_operations sg_fops = {
- .owner = THIS_MODULE,
- .open = sg_open,
- .release = sg_close,
- .read = sg_read,
- .write = sg_write,
+static const struct file_operations sg_fops = {
+ .owner = THIS_MODULE,
+ .open = sg_open,
+ .release = sg_close,
+ .read = sg_read,
+ .write = sg_write,
};
/* sg_init() - Initialize character device
*/
static int __init alterapciechdma_init(void)
{
- int rc = 0;
+ int rc = 0;
printk(KERN_DEBUG DRV_NAME " init(), built at " __DATE__ " " __TIME__ "\n");
/* register this driver with the PCI bus driver */
rc = pci_register_driver(&pci_driver);
if (rc < 0)
- return rc;
+ return rc;
return 0;
}
projects / linux-2.6-omap-h63xx.git / blobdiff