diff options
Diffstat (limited to 'driver/sysfs.c')
| -rw-r--r-- | driver/sysfs.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/driver/sysfs.c b/driver/sysfs.c deleted file mode 100644 index abc1c8a..0000000 --- a/driver/sysfs.c +++ /dev/null @@ -1,308 +0,0 @@ -/** - * - * @file sysfs.c - * @brief This file contains the functions providing the SysFS-interface. - * @author Guillermo Marcus - * @date 2010-03-01 - * - */ -#include <linux/version.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/cdev.h> -#include <linux/wait.h> -#include <linux/mm.h> -#include <linux/pagemap.h> -#include <linux/kernel.h> - -#include "compat.h" -#include "config.h" -#include "pciDriver.h" -#include "common.h" -#include "umem.h" -#include "kmem.h" -#include "sysfs.h" - -static SYSFS_GET_FUNCTION(pcidriver_show_kmem_entry); -static SYSFS_GET_FUNCTION(pcidriver_show_umem_entry); - -/** - * - * Initializes the sysfs attributes for an kmem/umem-entry - * - */ -static int _pcidriver_sysfs_initialize(pcidriver_privdata_t *privdata, - int id, - struct class_device_attribute *sysfs_attr, - const char *fmtstring, - SYSFS_GET_FUNCTION((*callback))) -{ - /* sysfs attributes for kmem buffers don’t make sense before 2.6.13, as - we have no mmap support before */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13) - char namebuffer[16]; - - /* allocate space for the name of the attribute */ - snprintf(namebuffer, sizeof(namebuffer), fmtstring, id); - - if ((sysfs_attr->attr.name = kstrdup(namebuffer, GFP_KERNEL)) == NULL) - return -ENOMEM; - - sysfs_attr->attr.mode = S_IRUGO; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24) - // DS: Shall we lock now while accessing driver data structures??? - sysfs_attr->attr.owner = THIS_MODULE; -#endif - sysfs_attr->show = callback; - sysfs_attr->store = NULL; - - /* name and add attribute */ - if (class_device_create_file(privdata->class_dev, sysfs_attr) != 0) - return -ENXIO; /* Device not configured. Not the really best choice, but hm. */ -#endif - - return 0; -} - -int pcidriver_sysfs_initialize_kmem(pcidriver_privdata_t *privdata, int id, struct class_device_attribute *sysfs_attr) -{ - return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "kbuf%d", pcidriver_show_kmem_entry); -} - -int pcidriver_sysfs_initialize_umem(pcidriver_privdata_t *privdata, int id, struct class_device_attribute *sysfs_attr) -{ - return _pcidriver_sysfs_initialize(privdata, id, sysfs_attr, "umem%d", pcidriver_show_umem_entry); -} - -/** - * - * Removes the file from sysfs and frees the allocated (kstrdup()) memory. - * - */ -void pcidriver_sysfs_remove(pcidriver_privdata_t *privdata, struct class_device_attribute *sysfs_attr) -{ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13) - class_device_remove_file(privdata->class_dev, sysfs_attr); - kfree(sysfs_attr->attr.name); -#endif -} - -static SYSFS_GET_FUNCTION(pcidriver_show_kmem_entry) -{ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13) - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - - /* As we can be sure that attr.name contains a filename which we - * created (see _pcidriver_sysfs_initialize), we do not need to have - * sanity checks but can directly call simple_strtol() */ - int id = simple_strtol(attr->attr.name + strlen("kbuf"), NULL, 10); - pcidriver_kmem_entry_t *entry = pcidriver_kmem_find_entry_id(privdata, id); - if (entry) { - unsigned long addr = entry->cpua; - unsigned long dma_addr = entry->dma_handle; - - if (entry->size >= 16) { - pcidriver_kmem_sync_entry(privdata, entry, PCILIB_KMEM_SYNC_FROMDEVICE); - return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\ndata: %8x %8x %8x %8x\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode, *(u32*)(entry->cpua), *(u32*)(entry->cpua + 4), *(u32*)(entry->cpua + 8), *(u32*)(entry->cpua + 12)); - } else - return snprintf(buf, PAGE_SIZE, "buffer: %d\naddr: %lx\nhw addr: %llx\nbus addr: %lx\ntype: %lx\nuse: 0x%lx\nitem: %lu\nsize: %lu\nrefs: %lu\nhw ref: %i\nmode: 0x%lx\n", id, addr, virt_to_phys((void*)addr), dma_addr, entry->type, entry->use, entry->item, entry->size, entry->refs&KMEM_REF_COUNT, (entry->refs&KMEM_REF_HW)?1:0, entry->mode); - } else - return snprintf(buf, PAGE_SIZE, "I am in the kmem_entry show function for buffer %d\n", id); -#else - return 0; -#endif -} - -static SYSFS_GET_FUNCTION(pcidriver_show_umem_entry) -{ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13) -#if 0 - pcidriver_privdata_t *privdata = (pcidriver_privdata_t *)cls->class_data; - - return snprintf(buf, PAGE_SIZE, "I am in the umem_entry show function, class_device_kobj_name: %s\n", cls->kobj.name); -#endif - return 0; -#else - return 0; -#endif -} - -#ifdef ENABLE_IRQ -SYSFS_GET_FUNCTION(pcidriver_show_irq_count) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - - return snprintf(buf, PAGE_SIZE, "%d\n", privdata->irq_count); -} - -SYSFS_GET_FUNCTION(pcidriver_show_irq_queues) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - int i, offset; - - /* output will be truncated to PAGE_SIZE */ - offset = snprintf(buf, PAGE_SIZE, "Queue\tOutstanding IRQs\n"); - for (i = 0; i < PCIDRIVER_INT_MAXSOURCES; i++) - offset += snprintf(buf+offset, PAGE_SIZE-offset, "%d\t%d\n", i, atomic_read(&(privdata->irq_outstanding[i])) ); - - return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1); -} -#endif - -SYSFS_GET_FUNCTION(pcidriver_show_mmap_mode) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - - return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_mode); -} - -SYSFS_SET_FUNCTION(pcidriver_store_mmap_mode) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - int mode = -1; - - /* Set the mmap-mode if it is either PCIDRIVER_MMAP_PCI or PCIDRIVER_MMAP_KMEM */ - if (sscanf(buf, "%d", &mode) == 1 && - (mode == PCIDRIVER_MMAP_PCI || mode == PCIDRIVER_MMAP_KMEM)) - privdata->mmap_mode = mode; - - return strlen(buf); -} - -SYSFS_GET_FUNCTION(pcidriver_show_mmap_area) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - - return snprintf(buf, PAGE_SIZE, "%d\n", privdata->mmap_area); -} - -SYSFS_SET_FUNCTION(pcidriver_store_mmap_area) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - int temp = -1; - - sscanf(buf, "%d", &temp); - - if ((temp >= PCIDRIVER_BAR0) && (temp <= PCIDRIVER_BAR5)) - privdata->mmap_area = temp; - - return strlen(buf); -} - -SYSFS_GET_FUNCTION(pcidriver_show_kmem_count) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - - return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&(privdata->kmem_count))); -} - -SYSFS_SET_FUNCTION(pcidriver_store_kmem_alloc) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - kmem_handle_t kmem_handle; - - /* FIXME: guillermo: is validation of parsing an unsigned int enough? */ - if (sscanf(buf, "%lu", &kmem_handle.size) == 1) - pcidriver_kmem_alloc(privdata, &kmem_handle); - - return strlen(buf); -} - -SYSFS_SET_FUNCTION(pcidriver_store_kmem_free) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - unsigned int id; - pcidriver_kmem_entry_t *kmem_entry; - - /* Parse the ID of the kernel memory to be freed, check bounds */ - if (sscanf(buf, "%u", &id) != 1 || - (id >= atomic_read(&(privdata->kmem_count)))) - goto err; - - if ((kmem_entry = pcidriver_kmem_find_entry_id(privdata,id)) == NULL) - goto err; - - pcidriver_kmem_free_entry(privdata, kmem_entry ); -err: - return strlen(buf); -} - -SYSFS_GET_FUNCTION(pcidriver_show_kbuffers) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - int offset = 0; - struct list_head *ptr; - pcidriver_kmem_entry_t *entry; - - /* print the header */ - offset += snprintf(buf, PAGE_SIZE, "kbuf#\tcpu addr\tsize\n"); - - spin_lock(&(privdata->kmemlist_lock)); - list_for_each(ptr, &(privdata->kmem_list)) { - entry = list_entry(ptr, pcidriver_kmem_entry_t, list); - - /* print entry info */ - if (offset > PAGE_SIZE) { - spin_unlock( &(privdata->kmemlist_lock) ); - return PAGE_SIZE; - } - - offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%08lx\t%lu\n", entry->id, (unsigned long)(entry->dma_handle), entry->size ); - } - - spin_unlock(&(privdata->kmemlist_lock)); - - /* output will be truncated to PAGE_SIZE */ - return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1); -} - -SYSFS_GET_FUNCTION(pcidriver_show_umappings) -{ - int offset = 0; - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - struct list_head *ptr; - pcidriver_umem_entry_t *entry; - - /* print the header */ - offset += snprintf(buf, PAGE_SIZE, "umap#\tn_pages\tsg_ents\n"); - - spin_lock( &(privdata->umemlist_lock) ); - list_for_each( ptr, &(privdata->umem_list) ) { - entry = list_entry(ptr, pcidriver_umem_entry_t, list ); - - /* print entry info */ - if (offset > PAGE_SIZE) { - spin_unlock( &(privdata->umemlist_lock) ); - return PAGE_SIZE; - } - - offset += snprintf(buf+offset, PAGE_SIZE-offset, "%3d\t%lu\t%lu\n", entry->id, - (unsigned long)(entry->nr_pages), (unsigned long)(entry->nents)); - } - - spin_unlock( &(privdata->umemlist_lock) ); - - /* output will be truncated to PAGE_SIZE */ - return (offset > PAGE_SIZE ? PAGE_SIZE : offset+1); -} - -SYSFS_SET_FUNCTION(pcidriver_store_umem_unmap) -{ - pcidriver_privdata_t *privdata = SYSFS_GET_PRIVDATA; - pcidriver_umem_entry_t *umem_entry; - unsigned int id; - - if (sscanf(buf, "%u", &id) != 1 || - (id >= atomic_read(&(privdata->umem_count)))) - goto err; - - if ((umem_entry = pcidriver_umem_find_entry_id(privdata, id)) == NULL) - goto err; - - pcidriver_umem_sgunmap(privdata, umem_entry); -err: - return strlen(buf); -} |