From patchwork Wed Aug 27 09:13:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tiejun Chen X-Patchwork-Id: 383383 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id AFD9A14009C for ; Wed, 27 Aug 2014 19:17:16 +1000 (EST) Received: from localhost ([::1]:58373 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XMZLu-0006kQ-Mg for incoming@patchwork.ozlabs.org; Wed, 27 Aug 2014 05:17:14 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45986) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XMZLO-0006Ah-Vu for qemu-devel@nongnu.org; Wed, 27 Aug 2014 05:16:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XMZLJ-0006no-1T for qemu-devel@nongnu.org; Wed, 27 Aug 2014 05:16:42 -0400 Received: from mga14.intel.com ([192.55.52.115]:61014) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XMZLI-0006nP-Kx for qemu-devel@nongnu.org; Wed, 27 Aug 2014 05:16:36 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 27 Aug 2014 02:08:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,409,1406617200"; d="scan'208";a="582279852" Received: from tchen0-linux.bj.intel.com ([10.238.154.58]) by fmsmga001.fm.intel.com with ESMTP; 27 Aug 2014 02:16:33 -0700 From: Tiejun Chen To: aliguori@amazon.com, mst@redhat.com, lcapitulino@redhat.com, lersek@redhat.com, eblake@redhat.com, alex.williamson@redhat.com, pbonzini@redhat.com Date: Wed, 27 Aug 2014 17:13:07 +0800 Message-Id: <1409130787-625-2-git-send-email-tiejun.chen@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409130787-625-1-git-send-email-tiejun.chen@intel.com> References: <1409130787-625-1-git-send-email-tiejun.chen@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.115 Cc: qemu-devel@nongnu.org Subject: [Qemu-devel] [PATCH 1/1] hw/pci-assign: split pci-assign.c X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org We will try to reuse assign_dev_load_option_rom in xen side, and especially its a good beginning to unify pci assign codes both on kvm and xen in the future. Signed-off-by: Tiejun Chen --- hw/i386/kvm/pci-assign.c | 170 +----------------------------------- include/hw/pci/pci_assign.h | 204 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 207 insertions(+), 167 deletions(-) create mode 100644 include/hw/pci/pci_assign.h diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c index 17c7d6dc..a4fe2d6 100644 --- a/hw/i386/kvm/pci-assign.c +++ b/hw/i386/kvm/pci-assign.c @@ -37,109 +37,7 @@ #include "hw/pci/pci.h" #include "hw/pci/msi.h" #include "kvm_i386.h" - -#define MSIX_PAGE_SIZE 0x1000 - -/* From linux/ioport.h */ -#define IORESOURCE_IO 0x00000100 /* Resource type */ -#define IORESOURCE_MEM 0x00000200 -#define IORESOURCE_IRQ 0x00000400 -#define IORESOURCE_DMA 0x00000800 -#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */ -#define IORESOURCE_MEM_64 0x00100000 - -//#define DEVICE_ASSIGNMENT_DEBUG - -#ifdef DEVICE_ASSIGNMENT_DEBUG -#define DEBUG(fmt, ...) \ - do { \ - fprintf(stderr, "%s: " fmt, __func__ , __VA_ARGS__); \ - } while (0) -#else -#define DEBUG(fmt, ...) -#endif - -typedef struct PCIRegion { - int type; /* Memory or port I/O */ - int valid; - uint64_t base_addr; - uint64_t size; /* size of the region */ - int resource_fd; -} PCIRegion; - -typedef struct PCIDevRegions { - uint8_t bus, dev, func; /* Bus inside domain, device and function */ - int irq; /* IRQ number */ - uint16_t region_number; /* number of active regions */ - - /* Port I/O or MMIO Regions */ - PCIRegion regions[PCI_NUM_REGIONS - 1]; - int config_fd; -} PCIDevRegions; - -typedef struct AssignedDevRegion { - MemoryRegion container; - MemoryRegion real_iomem; - union { - uint8_t *r_virtbase; /* mmapped access address for memory regions */ - uint32_t r_baseport; /* the base guest port for I/O regions */ - } u; - pcibus_t e_size; /* emulated size of region in bytes */ - pcibus_t r_size; /* real size of region in bytes */ - PCIRegion *region; -} AssignedDevRegion; - -#define ASSIGNED_DEVICE_PREFER_MSI_BIT 0 -#define ASSIGNED_DEVICE_SHARE_INTX_BIT 1 - -#define ASSIGNED_DEVICE_PREFER_MSI_MASK (1 << ASSIGNED_DEVICE_PREFER_MSI_BIT) -#define ASSIGNED_DEVICE_SHARE_INTX_MASK (1 << ASSIGNED_DEVICE_SHARE_INTX_BIT) - -typedef struct MSIXTableEntry { - uint32_t addr_lo; - uint32_t addr_hi; - uint32_t data; - uint32_t ctrl; -} MSIXTableEntry; - -typedef enum AssignedIRQType { - ASSIGNED_IRQ_NONE = 0, - ASSIGNED_IRQ_INTX_HOST_INTX, - ASSIGNED_IRQ_INTX_HOST_MSI, - ASSIGNED_IRQ_MSI, - ASSIGNED_IRQ_MSIX -} AssignedIRQType; - -typedef struct AssignedDevice { - PCIDevice dev; - PCIHostDeviceAddress host; - uint32_t dev_id; - uint32_t features; - int intpin; - AssignedDevRegion v_addrs[PCI_NUM_REGIONS - 1]; - PCIDevRegions real_device; - PCIINTxRoute intx_route; - AssignedIRQType assigned_irq_type; - struct { -#define ASSIGNED_DEVICE_CAP_MSI (1 << 0) -#define ASSIGNED_DEVICE_CAP_MSIX (1 << 1) - uint32_t available; -#define ASSIGNED_DEVICE_MSI_ENABLED (1 << 0) -#define ASSIGNED_DEVICE_MSIX_ENABLED (1 << 1) -#define ASSIGNED_DEVICE_MSIX_MASKED (1 << 2) - uint32_t state; - } cap; - uint8_t emulate_config_read[PCI_CONFIG_SPACE_SIZE]; - uint8_t emulate_config_write[PCI_CONFIG_SPACE_SIZE]; - int msi_virq_nr; - int *msi_virq; - MSIXTableEntry *msix_table; - hwaddr msix_table_addr; - uint16_t msix_max; - MemoryRegion mmio; - char *configfd_name; - int32_t bootindex; -} AssignedDevice; +#include "hw/pci/pci_assign.h" static void assigned_dev_update_irq_routing(PCIDevice *dev); @@ -1891,72 +1789,10 @@ static void assign_register_types(void) type_init(assign_register_types) -/* - * Scan the assigned devices for the devices that have an option ROM, and then - * load the corresponding ROM data to RAM. If an error occurs while loading an - * option ROM, we just ignore that option ROM and continue with the next one. - */ static void assigned_dev_load_option_rom(AssignedDevice *dev) { - char name[32], rom_file[64]; - FILE *fp; - uint8_t val; - struct stat st; void *ptr; - /* If loading ROM from file, pci handles it */ - if (dev->dev.romfile || !dev->dev.rom_bar) { - return; - } - - snprintf(rom_file, sizeof(rom_file), - "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom", - dev->host.domain, dev->host.bus, dev->host.slot, - dev->host.function); - - if (stat(rom_file, &st)) { - return; - } - - if (access(rom_file, F_OK)) { - error_report("pci-assign: Insufficient privileges for %s", rom_file); - return; - } - - /* Write "1" to the ROM file to enable it */ - fp = fopen(rom_file, "r+"); - if (fp == NULL) { - return; - } - val = 1; - if (fwrite(&val, 1, 1, fp) != 1) { - goto close_rom; - } - fseek(fp, 0, SEEK_SET); - - snprintf(name, sizeof(name), "%s.rom", - object_get_typename(OBJECT(dev))); - memory_region_init_ram(&dev->dev.rom, OBJECT(dev), name, st.st_size); - vmstate_register_ram(&dev->dev.rom, &dev->dev.qdev); - ptr = memory_region_get_ram_ptr(&dev->dev.rom); - memset(ptr, 0xff, st.st_size); - - if (!fread(ptr, 1, st.st_size, fp)) { - error_report("pci-assign: Cannot read from host %s", rom_file); - error_printf("Device option ROM contents are probably invalid " - "(check dmesg).\nSkip option ROM probe with rombar=0, " - "or load from file with romfile=\n"); - goto close_rom; - } - - pci_register_bar(&dev->dev, PCI_ROM_SLOT, 0, &dev->dev.rom); - dev->dev.has_rom = true; -close_rom: - /* Write "0" to disable ROM */ - fseek(fp, 0, SEEK_SET); - val = 0; - if (!fwrite(&val, 1, 1, fp)) { - DEBUG("%s\n", "Failed to disable pci-sysfs rom file"); - } - fclose(fp); + dev_load_option_rom(&dev->dev, OBJECT(dev), ptr, dev->host.domain, + dev->host.bus, dev->host.slot, dev->host.function); } diff --git a/include/hw/pci/pci_assign.h b/include/hw/pci/pci_assign.h new file mode 100644 index 0000000..b146fcd --- /dev/null +++ b/include/hw/pci/pci_assign.h @@ -0,0 +1,204 @@ +/* + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Just split from hw/i386/kvm/pci-assign.c. + */ +#ifndef PCI_ASSIGN_H +#define PCI_ASSIGN_H + +#include +#include +#include +#include +#include +#include +#include "hw/hw.h" +#include "hw/i386/pc.h" +#include "qemu/error-report.h" +#include "ui/console.h" +#include "hw/loader.h" +#include "monitor/monitor.h" +#include "qemu/range.h" +#include "sysemu/sysemu.h" +#include "hw/pci/pci.h" +#include "hw/pci/msi.h" +#include "kvm_i386.h" + +#define MSIX_PAGE_SIZE 0x1000 + +/* From linux/ioport.h */ +#define IORESOURCE_IO 0x00000100 /* Resource type */ +#define IORESOURCE_MEM 0x00000200 +#define IORESOURCE_IRQ 0x00000400 +#define IORESOURCE_DMA 0x00000800 +#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */ +#define IORESOURCE_MEM_64 0x00100000 + +//#define DEVICE_ASSIGNMENT_DEBUG + +#ifdef DEVICE_ASSIGNMENT_DEBUG +#define DEBUG(fmt, ...) \ + do { \ + fprintf(stderr, "%s: " fmt, __func__ , __VA_ARGS__); \ + } while (0) +#else +#define DEBUG(fmt, ...) +#endif + +typedef struct PCIRegion { + int type; /* Memory or port I/O */ + int valid; + uint64_t base_addr; + uint64_t size; /* size of the region */ + int resource_fd; +} PCIRegion; + +typedef struct PCIDevRegions { + uint8_t bus, dev, func; /* Bus inside domain, device and function */ + int irq; /* IRQ number */ + uint16_t region_number; /* number of active regions */ + + /* Port I/O or MMIO Regions */ + PCIRegion regions[PCI_NUM_REGIONS - 1]; + int config_fd; +} PCIDevRegions; + +typedef struct AssignedDevRegion { + MemoryRegion container; + MemoryRegion real_iomem; + union { + uint8_t *r_virtbase; /* mmapped access address for memory regions */ + uint32_t r_baseport; /* the base guest port for I/O regions */ + } u; + pcibus_t e_size; /* emulated size of region in bytes */ + pcibus_t r_size; /* real size of region in bytes */ + PCIRegion *region; +} AssignedDevRegion; + +#define ASSIGNED_DEVICE_PREFER_MSI_BIT 0 +#define ASSIGNED_DEVICE_SHARE_INTX_BIT 1 + +#define ASSIGNED_DEVICE_PREFER_MSI_MASK (1 << ASSIGNED_DEVICE_PREFER_MSI_BIT) +#define ASSIGNED_DEVICE_SHARE_INTX_MASK (1 << ASSIGNED_DEVICE_SHARE_INTX_BIT) + +typedef struct MSIXTableEntry { + uint32_t addr_lo; + uint32_t addr_hi; + uint32_t data; + uint32_t ctrl; +} MSIXTableEntry; + +typedef enum AssignedIRQType { + ASSIGNED_IRQ_NONE = 0, + ASSIGNED_IRQ_INTX_HOST_INTX, + ASSIGNED_IRQ_INTX_HOST_MSI, + ASSIGNED_IRQ_MSI, + ASSIGNED_IRQ_MSIX +} AssignedIRQType; + +typedef struct AssignedDevice { + PCIDevice dev; + PCIHostDeviceAddress host; + uint32_t dev_id; + uint32_t features; + int intpin; + AssignedDevRegion v_addrs[PCI_NUM_REGIONS - 1]; + PCIDevRegions real_device; + PCIINTxRoute intx_route; + AssignedIRQType assigned_irq_type; + struct { +#define ASSIGNED_DEVICE_CAP_MSI (1 << 0) +#define ASSIGNED_DEVICE_CAP_MSIX (1 << 1) + uint32_t available; +#define ASSIGNED_DEVICE_MSI_ENABLED (1 << 0) +#define ASSIGNED_DEVICE_MSIX_ENABLED (1 << 1) +#define ASSIGNED_DEVICE_MSIX_MASKED (1 << 2) + uint32_t state; + } cap; + uint8_t emulate_config_read[PCI_CONFIG_SPACE_SIZE]; + uint8_t emulate_config_write[PCI_CONFIG_SPACE_SIZE]; + int msi_virq_nr; + int *msi_virq; + MSIXTableEntry *msix_table; + hwaddr msix_table_addr; + uint16_t msix_max; + MemoryRegion mmio; + char *configfd_name; + int32_t bootindex; +} AssignedDevice; + +/* + * Scan the assigned devices for the devices that have an option ROM, and then + * load the corresponding ROM data to RAM. If an error occurs while loading an + * option ROM, we just ignore that option ROM and continue with the next one. + */ +static int dev_load_option_rom(PCIDevice *dev, struct Object *owner, + void *ptr, unsigned int domain, + unsigned int bus, unsigned int slot, + unsigned int function) +{ + char name[32], rom_file[64]; + FILE *fp; + uint8_t val; + struct stat st; + int size = 0; + + /* If loading ROM from file, pci handles it */ + if (dev->romfile || !dev->rom_bar) { + return -1; + } + + snprintf(rom_file, sizeof(rom_file), + "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom", + domain, bus, slot, function); + + if (stat(rom_file, &st)) { + return -1; + } + + if (access(rom_file, F_OK)) { + error_report("pci-assign: Insufficient privileges for %s", rom_file); + return -1; + } + + /* Write "1" to the ROM file to enable it */ + fp = fopen(rom_file, "r+"); + if (fp == NULL) { + return -1; + } + val = 1; + if (fwrite(&val, 1, 1, fp) != 1) { + goto close_rom; + } + fseek(fp, 0, SEEK_SET); + + snprintf(name, sizeof(name), "%s.rom", object_get_typename(owner)); + memory_region_init_ram(&dev->rom, owner, name, st.st_size); + vmstate_register_ram(&dev->rom, &dev->qdev); + ptr = memory_region_get_ram_ptr(&dev->rom); + memset(ptr, 0xff, st.st_size); + + if (!fread(ptr, 1, st.st_size, fp)) { + error_report("pci-assign: Cannot read from host %s", rom_file); + error_printf("Device option ROM contents are probably invalid " + "(check dmesg).\nSkip option ROM probe with rombar=0, " + "or load from file with romfile=\n"); + goto close_rom; + } + + pci_register_bar(dev, PCI_ROM_SLOT, 0, &dev->rom); + dev->has_rom = true; + size = st.st_size; +close_rom: + /* Write "0" to disable ROM */ + fseek(fp, 0, SEEK_SET); + val = 0; + if (!fwrite(&val, 1, 1, fp)) { + DEBUG("%s\n", "Failed to disable pci-sysfs rom file"); + } + fclose(fp); + + return size; +} +#endif /* PCI_ASSIGN_H */