diff options
Diffstat (limited to 'src/dpdk_lib18/librte_eal/bsdapp/contigmem/contigmem.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_eal/bsdapp/contigmem/contigmem.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/src/dpdk_lib18/librte_eal/bsdapp/contigmem/contigmem.c b/src/dpdk_lib18/librte_eal/bsdapp/contigmem/contigmem.c deleted file mode 100755 index b1a23fa6..00000000 --- a/src/dpdk_lib18/librte_eal/bsdapp/contigmem/contigmem.c +++ /dev/null @@ -1,233 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/bio.h> -#include <sys/bus.h> -#include <sys/conf.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/module.h> -#include <sys/proc.h> -#include <sys/rwlock.h> -#include <sys/systm.h> -#include <sys/sysctl.h> - -#include <machine/bus.h> - -#include <vm/vm.h> -#include <vm/pmap.h> -#include <vm/vm_object.h> -#include <vm/vm_page.h> -#include <vm/vm_pager.h> - -static int contigmem_load(void); -static int contigmem_unload(void); -static int contigmem_physaddr(SYSCTL_HANDLER_ARGS); - -static d_mmap_t contigmem_mmap; -static d_mmap_single_t contigmem_mmap_single; -static d_open_t contigmem_open; - -static int contigmem_num_buffers = RTE_CONTIGMEM_DEFAULT_NUM_BUFS; -static int contigmem_buffer_size = RTE_CONTIGMEM_DEFAULT_BUF_SIZE; - -static eventhandler_tag contigmem_eh_tag; -static void *contigmem_buffers[RTE_CONTIGMEM_MAX_NUM_BUFS]; -static struct cdev *contigmem_cdev = NULL; - -TUNABLE_INT("hw.contigmem.num_buffers", &contigmem_num_buffers); -TUNABLE_INT("hw.contigmem.buffer_size", &contigmem_buffer_size); - -static SYSCTL_NODE(_hw, OID_AUTO, contigmem, CTLFLAG_RD, 0, "contigmem"); - -SYSCTL_INT(_hw_contigmem, OID_AUTO, num_buffers, CTLFLAG_RD, - &contigmem_num_buffers, 0, "Number of contigmem buffers allocated"); -SYSCTL_INT(_hw_contigmem, OID_AUTO, buffer_size, CTLFLAG_RD, - &contigmem_buffer_size, 0, "Size of each contiguous buffer"); - -static SYSCTL_NODE(_hw_contigmem, OID_AUTO, physaddr, CTLFLAG_RD, 0, - "physaddr"); - -MALLOC_DEFINE(M_CONTIGMEM, "contigmem", "contigmem(4) allocations"); - -static int contigmem_modevent(module_t mod, int type, void *arg) -{ - int error = 0; - - switch (type) { - case MOD_LOAD: - error = contigmem_load(); - break; - case MOD_UNLOAD: - error = contigmem_unload(); - break; - default: - break; - } - - return (error); -} - -moduledata_t contigmem_mod = { - "contigmem", - (modeventhand_t)contigmem_modevent, - 0 -}; - -DECLARE_MODULE(contigmem, contigmem_mod, SI_SUB_DRIVERS, SI_ORDER_ANY); -MODULE_VERSION(contigmem, 1); - -static struct cdevsw contigmem_ops = { - .d_name = "contigmem", - .d_version = D_VERSION, - .d_mmap = contigmem_mmap, - .d_mmap_single = contigmem_mmap_single, - .d_open = contigmem_open, -}; - -static int -contigmem_load() -{ - char index_string[8], description[32]; - int i; - - if (contigmem_num_buffers > RTE_CONTIGMEM_MAX_NUM_BUFS) { - printf("%d buffers requested is greater than %d allowed\n", - contigmem_num_buffers, RTE_CONTIGMEM_MAX_NUM_BUFS); - return (EINVAL); - } - - if (contigmem_buffer_size < PAGE_SIZE || - (contigmem_buffer_size & (contigmem_buffer_size - 1)) != 0) { - printf("buffer size 0x%x is not greater than PAGE_SIZE and " - "power of two\n", contigmem_buffer_size); - return (EINVAL); - } - - for (i = 0; i < contigmem_num_buffers; i++) { - contigmem_buffers[i] = - contigmalloc(contigmem_buffer_size, M_CONTIGMEM, M_ZERO, 0, - BUS_SPACE_MAXADDR, contigmem_buffer_size, 0); - - if (contigmem_buffers[i] == NULL) { - printf("contigmalloc failed for buffer %d\n", i); - return (ENOMEM); - } - - printf("%2u: virt=%p phys=%p\n", i, contigmem_buffers[i], - (void *)pmap_kextract((vm_offset_t)contigmem_buffers[i])); - - snprintf(index_string, sizeof(index_string), "%d", i); - snprintf(description, sizeof(description), - "phys addr for buffer %d", i); - SYSCTL_ADD_PROC(NULL, - &SYSCTL_NODE_CHILDREN(_hw_contigmem, physaddr), OID_AUTO, - index_string, CTLTYPE_U64 | CTLFLAG_RD, - (void *)(uintptr_t)i, 0, contigmem_physaddr, "LU", - description); - } - - contigmem_cdev = make_dev_credf(0, &contigmem_ops, 0, NULL, UID_ROOT, - GID_WHEEL, 0600, "contigmem"); - - return (0); -} - -static int -contigmem_unload() -{ - int i; - - if (contigmem_cdev != NULL) - destroy_dev(contigmem_cdev); - - if (contigmem_eh_tag != NULL) - EVENTHANDLER_DEREGISTER(process_exit, contigmem_eh_tag); - - for (i = 0; i < RTE_CONTIGMEM_MAX_NUM_BUFS; i++) - if (contigmem_buffers[i] != NULL) - contigfree(contigmem_buffers[i], contigmem_buffer_size, - M_CONTIGMEM); - - return (0); -} - -static int -contigmem_physaddr(SYSCTL_HANDLER_ARGS) -{ - uint64_t physaddr; - int index = (int)(uintptr_t)arg1; - - physaddr = (uint64_t)vtophys(contigmem_buffers[index]); - return (sysctl_handle_64(oidp, &physaddr, 0, req)); -} - -static int -contigmem_open(struct cdev *cdev, int fflags, int devtype, - struct thread *td) -{ - return (0); -} - -static int -contigmem_mmap(struct cdev *cdev, vm_ooffset_t offset, vm_paddr_t *paddr, - int prot, vm_memattr_t *memattr) -{ - - *paddr = offset; - return (0); -} - -static int -contigmem_mmap_single(struct cdev *cdev, vm_ooffset_t *offset, vm_size_t size, - struct vm_object **obj, int nprot) -{ - /* - * The buffer index is encoded in the offset. Divide the offset by - * PAGE_SIZE to get the index of the buffer requested by the user - * app. - */ - if ((*offset/PAGE_SIZE) >= contigmem_num_buffers) - return (EINVAL); - - *offset = (vm_ooffset_t)vtophys(contigmem_buffers[*offset/PAGE_SIZE]); - *obj = vm_pager_allocate(OBJT_DEVICE, cdev, size, nprot, *offset, - curthread->td_ucred); - - return (0); -} - |