From e68271385af87a7a32027445d855ebcf4cf6f229 Mon Sep 17 00:00:00 2001 From: art Date: Tue, 4 Apr 2000 12:35:47 +0000 Subject: [PATCH] remove accidentally comitted files --- sys/uvm/uvm_uio.c | 266 ---------------------------------------------- sys/uvm/uvm_uio.h | 66 ------------ 2 files changed, 332 deletions(-) delete mode 100644 sys/uvm/uvm_uio.c delete mode 100644 sys/uvm/uvm_uio.h diff --git a/sys/uvm/uvm_uio.c b/sys/uvm/uvm_uio.c deleted file mode 100644 index 84ef108b2b5..00000000000 --- a/sys/uvm/uvm_uio.c +++ /dev/null @@ -1,266 +0,0 @@ -/* - * Copyright (c) 1999 Artur Grabowski - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. Neither the name of the author nor the names of his contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHORS 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 -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include - -int uvm_uio_enable = 1; -int uvm_uio_num_try = 0; -int uvm_uio_num_success = 0; - -/* - * m_ext functions. - */ -void uvm_mbuf_free __P((struct mbuf *)); -void uvm_mbuf_ref __P((struct mbuf *)); - -/* - * returns the length of I/O, 0 on failure. - * - * Should not be called if UVM_UIO_TRY(uio) has been checked first. - */ -size_t -uvm_uio_to_mbuf(uio, mbuf) - struct uio *uio; - struct mbuf *mbuf; -{ - struct vm_map *map; - vaddr_t realbase, base, kva; - vsize_t reallen, len, offset; - struct vm_page **pages; - int npages; - struct iovec *iov; - struct uvm_mbuf *um; - struct mbuf *m; -#ifndef PMAP_NEW - int i; -#endif - - uvm_uio_num_try++; - - if ((mbuf->m_flags & M_EXT)) { - printf("uvm_uio_to_mbuf: fail 1\n"); - return 0; - } - - map = &uio->uio_procp->p_vmspace->vm_map; - iov = uio->uio_iov; - - /* - * XXX - check if iov_len is bigger than max vsize_t - */ - - reallen = (vsize_t)iov->iov_len; - realbase = (vaddr_t)iov->iov_base; - - /* - * Check alignment. - * - * What we really want is to somehow tell the caller how much the - * uios should be adjusted and try again. - */ - if ((realbase & (sizeof(long) - 1)) != 0) { - printf("uvm_uio_to_mbuf: not aligned\n"); - return 0; - } - - base = trunc_page(realbase); - offset = realbase - base; - - /* - * truncate reallen here so that we won't do a huge malloc. - * Subtract offset so that the next round will be page aligned. - */ - if (reallen > UVM_UIO_LIMIT) - reallen = UVM_UIO_LIMIT - offset; - - len = reallen + offset; - len = round_page(len); - npages = atop(len); - - if ((mbuf->m_flags & M_PKTHDR)) { - - MGET(m, M_WAIT, MT_DATA); - mbuf->m_len = 0; - mbuf->m_next = m; - } else { - m = mbuf; - m->m_next = NULL; - } - - MALLOC(um, struct uvm_mbuf *, sizeof(struct uvm_mbuf), M_TEMP, - M_WAITOK); - - /* - * If the pages we have less than UVM_UIO_SMALL_PAGES, we can fit - * them into the pages struct in uvm_uio. - */ - if (npages > UVM_UIO_SMALL_PAGES) - MALLOC(pages, struct vm_page **, - npages * sizeof(struct vm_page *), M_TEMP, M_WAITOK); - else - pages = um->um_pages_small; - - /* - * Loan the pages we want. - */ - if (uvm_loan(map, base, len, (void **)pages, UVM_LOAN_TOPAGE) != - KERN_SUCCESS) { - /* - * XXX - This is really ENOMEM or EFAULT. - */ - printf("uvm_uio_to_mbuf: loan failed\n"); - - goto fail; - } - - /* - * Allocate space to map pages. - */ - kva = vm_map_min(kernel_map); - if (uvm_map(kernel_map, &kva, len, NULL, UVM_UNKNOWN_OFFSET, - UVM_MAPFLAG(UVM_PROT_READ, UVM_PROT_READ, UVM_INH_NONE, - UVM_ADV_SEQUENTIAL, 0)) != KERN_SUCCESS) { - uvm_unloanpage(pages, npages); - goto fail; - } - - /* - * Initialize um. - */ - um->um_pages = pages; - um->um_npages = npages; - um->um_usecount = 1; - um->um_kva = kva; - - printf("mapping: 0x%x -> 0x%x\n", kva, kva + len); - /* - * Map pages. - */ -#ifdef PMAP_NEW - pmap_kenter_pgs(kva, pages, npages); -#else - for (i = 0; i < npages; i++, kva += PAGE_SIZE) - pmap_enter(pmap_kernel(), kva, VM_PAGE_TO_PHYS(pages[i]), - VM_PROT_READ, TRUE, VM_PROT_READ); -#endif - - /* - * Update mbuf. - */ - m->m_flags |= M_EXT | M_RONLY; - m->m_data = (caddr_t)(um->um_kva + offset); - m->m_len = reallen; - m->m_ext.ext_free = uvm_mbuf_free; - m->m_ext.ext_ref = uvm_mbuf_ref; - /* - * We lie about those two to avoid problems with someone trying - * to prepend data. - */ - m->m_ext.ext_buf = (caddr_t)(um->um_kva + offset); - m->m_ext.ext_size = reallen; - m->m_ext.ext_handle = um; - - /* - * Update uio. - */ - if ((iov->iov_len -= reallen) == 0) { - uio->uio_iov++; - uio->uio_iovcnt--; - } - uio->uio_resid -= reallen; - - uvm_uio_num_success++; - - return reallen; -fail: - if (npages > UVM_UIO_SMALL_PAGES) - FREE(pages, M_TEMP); - - if (m != mbuf) - m_freem(m); - - FREE(um, M_TEMP); - - return 0; -} - -void -uvm_mbuf_free(mb) - struct mbuf *mb; -{ - struct uvm_mbuf *um = (struct uvm_mbuf *)mb->m_ext.ext_handle; - vsize_t len; - - if (--um->um_usecount) - return; - - len = ptoa(um->um_npages); - - printf("unmapping: 0x%x -> 0x%x\n", um->um_kva, um->um_kva + len); -#ifdef PMAP_NEW - pmap_kremove(um->um_kva, len); -#else - pmap_remove(pmap_kernel(), um->um_kva, um->um_kva + len); -#endif - - uvm_unloanpage(um->um_pages, um->um_npages); - uvm_unmap(kernel_map, um->um_kva, um->um_kva + len); - uvm_km_free_wakeup(kernel_map, um->um_kva, len); - if (um->um_npages > UVM_UIO_SMALL_PAGES) - FREE(um->um_pages, M_TEMP); - - FREE(um, M_TEMP); -#ifdef DIAGNOSTIC - mb->m_data = NULL; - mb->m_ext.ext_handle = NULL; - mb->m_flags &= ~M_EXT; -#endif -} - -void -uvm_mbuf_ref(mb) - struct mbuf *mb; -{ - ((struct uvm_mbuf *)mb->m_ext.ext_handle)->um_usecount++; -} diff --git a/sys/uvm/uvm_uio.h b/sys/uvm/uvm_uio.h deleted file mode 100644 index 4a8ce974664..00000000000 --- a/sys/uvm/uvm_uio.h +++ /dev/null @@ -1,66 +0,0 @@ -/* - * Copyright (c) 1999 Artur Grabowski - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. Neither the name of the author nor the names of his contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHORS 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 /* for PAGE_SIZE */ - -/* - * If the number of pages we're about to transfer is smaller than this number - * we use the pre-allocated array. - */ -#define UVM_UIO_SMALL_PAGES 8 - -/* - * Limit transfers to this number to avoid running out of memory. - */ -#define UVM_UIO_LIMIT (256 * PAGE_SIZE) - -/* - * m_ext structure. - */ -struct uvm_mbuf { - struct vm_page **um_pages; /* The pages */ - int um_npages; /* number of pages */ - int um_usecount; /* ref cnt */ - vaddr_t um_kva; /* where the pages are mapped */ - struct vm_page *um_pages_small[UVM_UIO_SMALL_PAGES]; -}; - -extern int uvm_uio_enable; - -#define UVM_UIO_MINIO PAGE_SIZE /* XXX - tweak */ -#define UVM_UIO_TRY(uio) (uvm_uio_enable && \ - ((uio)->uio_iov->iov_len >= UVM_UIO_MINIO) && \ - ((uio)->uio_procp != NULL) && \ - ((uio)->uio_rw == UIO_WRITE) && \ - ((uio)->uio_segflg == UIO_USERSPACE)) - -size_t uvm_uio_to_mbuf __P((struct uio *, struct mbuf *)); -- 2.20.1