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-rw-r--r--drivers/staging/poch/README136
1 files changed, 0 insertions, 136 deletions
diff --git a/drivers/staging/poch/README b/drivers/staging/poch/README
deleted file mode 100644
index ac76ff9..0000000
--- a/drivers/staging/poch/README
+++ /dev/null
@@ -1,136 +0,0 @@
-TODO:
- - Rx block size is limited to < 2048, hardware bug?
- - Group size is limited to < page size, kernel alloc/mmap API issues
- - test whether Tx is transmitting data from provided buffers
- - handle device unplug case
- - handle temperature above threshold
- - use bus address instead of physical address for DMA
- - support for snapshot mode
- - audit userspace interfaces
- - get reserved major/minor if needed
-
-Sample Code:
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-#include <poll.h>
-#include <stdio.h>
-#include <error.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-
-#include <sysfs/libsysfs.h>
-
-#include <poch.h>
-
-struct pconsume {
- uint32_t * offsets;
- uint32_t nfetch;
- uint32_t nflush;
-};
-
-uint32_t offsets[10];
-
-void process_group(unsigned char *buf, uint32_t size)
-{
- uint16_t *buf16 = (uint16_t *)buf;
-
- printf("RX: %p %u %04x %04x %04x %04x %04x %04x\n", buf, size,
- buf16[0], buf16[1], buf16[2], buf16[3], buf16[4], buf16[5]);
-}
-
-int main()
-{
- struct sysfs_attribute *attr;
- char *path;
- int ret;
- unsigned long mmap_size;
- int fd;
- unsigned char *cbuf;
-
- uint32_t nflush;
- struct pollfd poll_fds;
- int count = 0;
- int i;
-
- path = "/sys/class/pocketchange/poch0/ch0/block_size";
- attr = sysfs_open_attribute(path);
- ret = sysfs_write_attribute(attr, "256", strlen("256"));
- if (ret == -1)
- error(1, errno, "error writing attribute %s", path);
- sysfs_close_attribute(attr);
-
- path = "/sys/class/pocketchange/poch0/ch0/group_size";
- attr = sysfs_open_attribute(path);
- ret = sysfs_write_attribute(attr, "4096", strlen("4096"));
- if (ret == -1)
- error(1, errno, "error writing attribute %s", path);
- sysfs_close_attribute(attr);
-
- path = "/sys/class/pocketchange/poch0/ch0/group_count";
- attr = sysfs_open_attribute(path);
- ret = sysfs_write_attribute(attr, "64", strlen("64"));
- if (ret == -1)
- error(1, errno, "error writing attribute %s", path);
- sysfs_close_attribute(attr);
-
- fd = open("/dev/ch0", O_RDWR);
- if (fd == -1)
- error(1, errno, "error opening device node");
-
- path = "/sys/class/pocketchange/poch0/ch0/mmap_size";
- attr = sysfs_open_attribute(path);
- ret = sysfs_read_attribute(attr);
- if (ret == -1)
- error(1, errno, "error reading attribute %s", path);
- printf("%s", attr->value);
- sscanf(attr->value, "%lu", &mmap_size);
- sysfs_close_attribute(attr);
-
- cbuf = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
- MAP_PRIVATE, fd, 0);
- if (cbuf == MAP_FAILED)
- error(1, errno, "error mapping DMA buffers");
-
- ret = ioctl(fd, POCH_IOC_TRANSFER_START, 0);
- if (ret == -1)
- error(1, errno, "error starting transfer");
-
- nflush = 0;
- while (1) {
- struct pconsume consume;
-
- consume.offsets = offsets;
- consume.nfetch = 10;
- consume.nflush = nflush;
-
- ret = ioctl(fd, POCH_IOC_CONSUME, &consume);
- if (ret == -1)
- error(1, errno, "error consuming groups");
-
- nflush = consume.nfetch;
-
- for (i = 0; i < nflush; i++) {
- process_group(cbuf + consume.offsets[i], 4096);
-
- count++;
- if (count == 1000)
- break;
- }
-
- if (count == 1000)
- break;
- }
-
- ret = ioctl(fd, POCH_IOC_TRANSFER_STOP, 0);
- if (ret == -1)
- error(1, errno, "error starting transfer");
-
- return 0;
-}
-
-Please send patches to Greg Kroah-Hartman <greg@kroah.com> and
-Vijay Kumar <vijaykumar@bravegnu.org> and Jaya Kumar <jayakumar.lkml@gmail.com>
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