/****************************************************************************** * platform-pci.c * * Xen platform PCI device driver * * Authors: ssmith@xensource.com and stefano.stabellini@eu.citrix.com * * Copyright (c) 2005, Intel Corporation. * Copyright (c) 2007, XenSource Inc. * Copyright (c) 2010, Citrix * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 59 Temple * Place - Suite 330, Boston, MA 02111-1307 USA. * */ #include #include #include #include #include #include #include #include #include #include #define DRV_NAME "xen-platform-pci" static unsigned long platform_mmio; static unsigned long platform_mmio_alloc; static unsigned long platform_mmiolen; static uint64_t callback_via; static unsigned long alloc_xen_mmio(unsigned long len) { unsigned long addr; addr = platform_mmio + platform_mmio_alloc; platform_mmio_alloc += len; BUG_ON(platform_mmio_alloc > platform_mmiolen); return addr; } static uint64_t get_callback_via(struct pci_dev *pdev) { u8 pin; int irq; irq = pdev->irq; if (irq < 16) return irq; /* ISA IRQ */ pin = pdev->pin; /* We don't know the GSI. Specify the PCI INTx line instead. */ return ((uint64_t)0x01 << HVM_CALLBACK_VIA_TYPE_SHIFT) | /* PCI INTx identifier */ ((uint64_t)pci_domain_nr(pdev->bus) << 32) | ((uint64_t)pdev->bus->number << 16) | ((uint64_t)(pdev->devfn & 0xff) << 8) | ((uint64_t)(pin - 1) & 3); } static irqreturn_t do_hvm_evtchn_intr(int irq, void *dev_id) { xen_hvm_evtchn_do_upcall(); return IRQ_HANDLED; } static int xen_allocate_irq(struct pci_dev *pdev) { return request_irq(pdev->irq, do_hvm_evtchn_intr, IRQF_NOBALANCING | IRQF_TRIGGER_RISING, "xen-platform-pci", pdev); } static int platform_pci_resume(struct pci_dev *pdev) { int err; if (!xen_pv_domain()) return 0; err = xen_set_callback_via(callback_via); if (err) { dev_err(&pdev->dev, "platform_pci_resume failure!\n"); return err; } return 0; } static int platform_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { int i, ret; long ioaddr; long mmio_addr, mmio_len; unsigned int max_nr_gframes; unsigned long grant_frames; if (!xen_domain()) return -ENODEV; i = pci_enable_device(pdev); if (i) return i; ioaddr = pci_resource_start(pdev, 0); mmio_addr = pci_resource_start(pdev, 1); mmio_len = pci_resource_len(pdev, 1); if (mmio_addr == 0 || ioaddr == 0) { dev_err(&pdev->dev, "no resources found\n"); ret = -ENOENT; goto pci_out; } ret = pci_request_region(pdev, 1, DRV_NAME); if (ret < 0) goto pci_out; ret = pci_request_region(pdev, 0, DRV_NAME); if (ret < 0) goto mem_out; platform_mmio = mmio_addr; platform_mmiolen = mmio_len; /* * Xen HVM guests always use the vector callback mechanism. * L1 Dom0 in a nested Xen environment is a PV guest inside in an * HVM environment. It needs the platform-pci driver to get * notifications from L0 Xen, but it cannot use the vector callback * as it is not exported by L1 Xen. */ if (xen_pv_domain()) { ret = xen_allocate_irq(pdev); if (ret) { dev_warn(&pdev->dev, "request_irq failed err=%d\n", ret); goto out; } callback_via = get_callback_via(pdev); ret = xen_set_callback_via(callback_via); if (ret) { dev_warn(&pdev->dev, "Unable to set the evtchn callback " "err=%d\n", ret); goto out; } } max_nr_gframes = gnttab_max_grant_frames(); grant_frames = alloc_xen_mmio(PAGE_SIZE * max_nr_gframes); ret = gnttab_setup_auto_xlat_frames(grant_frames); if (ret) goto out; ret = gnttab_init(); if (ret) goto grant_out; xenbus_probe(NULL); return 0; grant_out: gnttab_free_auto_xlat_frames(); out: pci_release_region(pdev, 0); mem_out: pci_release_region(pdev, 1); pci_out: pci_disable_device(pdev); return ret; } static struct pci_device_id platform_pci_tbl[] = { {PCI_VENDOR_ID_XEN, PCI_DEVICE_ID_XEN_PLATFORM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {0,} }; static struct pci_driver platform_driver = { .name = DRV_NAME, .probe = platform_pci_probe, .id_table = platform_pci_tbl, #ifdef CONFIG_PM .resume_early = platform_pci_resume, #endif }; builtin_pci_driver(platform_driver); 'commit-info'> authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-17 13:46:29 +0000 committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:33 +0800 commit11e3b725cfc282efe9d4a354153e99d86a16af08 (patch) tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /net/batman-adv/log.h parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/batman-adv/log.h')