18d59ecb2SHans Petter Selasky /*- 28d59ecb2SHans Petter Selasky * Copyright (c) 2010 Isilon Systems, Inc. 38d59ecb2SHans Petter Selasky * Copyright (c) 2010 iX Systems, Inc. 48d59ecb2SHans Petter Selasky * Copyright (c) 2010 Panasas, Inc. 58d59ecb2SHans Petter Selasky * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 68d59ecb2SHans Petter Selasky * All rights reserved. 78d59ecb2SHans Petter Selasky * 88d59ecb2SHans Petter Selasky * Redistribution and use in source and binary forms, with or without 98d59ecb2SHans Petter Selasky * modification, are permitted provided that the following conditions 108d59ecb2SHans Petter Selasky * are met: 118d59ecb2SHans Petter Selasky * 1. Redistributions of source code must retain the above copyright 128d59ecb2SHans Petter Selasky * notice unmodified, this list of conditions, and the following 138d59ecb2SHans Petter Selasky * disclaimer. 148d59ecb2SHans Petter Selasky * 2. Redistributions in binary form must reproduce the above copyright 158d59ecb2SHans Petter Selasky * notice, this list of conditions and the following disclaimer in the 168d59ecb2SHans Petter Selasky * documentation and/or other materials provided with the distribution. 178d59ecb2SHans Petter Selasky * 188d59ecb2SHans Petter Selasky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 198d59ecb2SHans Petter Selasky * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 208d59ecb2SHans Petter Selasky * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 218d59ecb2SHans Petter Selasky * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 228d59ecb2SHans Petter Selasky * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 238d59ecb2SHans Petter Selasky * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 248d59ecb2SHans Petter Selasky * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 258d59ecb2SHans Petter Selasky * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 268d59ecb2SHans Petter Selasky * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 278d59ecb2SHans Petter Selasky * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 288d59ecb2SHans Petter Selasky * 298d59ecb2SHans Petter Selasky * $FreeBSD$ 308d59ecb2SHans Petter Selasky */ 318d59ecb2SHans Petter Selasky #ifndef _LINUX_PCI_H_ 328d59ecb2SHans Petter Selasky #define _LINUX_PCI_H_ 338d59ecb2SHans Petter Selasky 348d59ecb2SHans Petter Selasky #define CONFIG_PCI_MSI 358d59ecb2SHans Petter Selasky 368d59ecb2SHans Petter Selasky #include <linux/types.h> 378d59ecb2SHans Petter Selasky 388d59ecb2SHans Petter Selasky #include <sys/param.h> 398d59ecb2SHans Petter Selasky #include <sys/bus.h> 408d59ecb2SHans Petter Selasky #include <sys/pciio.h> 418d59ecb2SHans Petter Selasky #include <sys/rman.h> 428d59ecb2SHans Petter Selasky #include <dev/pci/pcivar.h> 438d59ecb2SHans Petter Selasky #include <dev/pci/pcireg.h> 448d59ecb2SHans Petter Selasky #include <dev/pci/pci_private.h> 458d59ecb2SHans Petter Selasky 468d59ecb2SHans Petter Selasky #include <machine/resource.h> 478d59ecb2SHans Petter Selasky 488d59ecb2SHans Petter Selasky #include <linux/list.h> 498d59ecb2SHans Petter Selasky #include <linux/dmapool.h> 508d59ecb2SHans Petter Selasky #include <linux/dma-mapping.h> 518d59ecb2SHans Petter Selasky #include <linux/compiler.h> 528d59ecb2SHans Petter Selasky #include <linux/errno.h> 538d59ecb2SHans Petter Selasky #include <asm/atomic.h> 548d59ecb2SHans Petter Selasky #include <linux/device.h> 558d59ecb2SHans Petter Selasky 568d59ecb2SHans Petter Selasky struct pci_device_id { 578d59ecb2SHans Petter Selasky uint32_t vendor; 588d59ecb2SHans Petter Selasky uint32_t device; 598d59ecb2SHans Petter Selasky uint32_t subvendor; 608d59ecb2SHans Petter Selasky uint32_t subdevice; 618d59ecb2SHans Petter Selasky uint32_t class_mask; 628d59ecb2SHans Petter Selasky uintptr_t driver_data; 638d59ecb2SHans Petter Selasky }; 648d59ecb2SHans Petter Selasky 658d59ecb2SHans Petter Selasky #define MODULE_DEVICE_TABLE(bus, table) 668d59ecb2SHans Petter Selasky #define PCI_ANY_ID (-1) 678d59ecb2SHans Petter Selasky #define PCI_VENDOR_ID_MELLANOX 0x15b3 688d59ecb2SHans Petter Selasky #define PCI_VENDOR_ID_TOPSPIN 0x1867 698d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44 708d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE 0x5a46 718d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278 728d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282 738d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c 748d59ecb2SHans Petter Selasky #define PCI_DEVICE_ID_MELLANOX_SINAI 0x6274 758d59ecb2SHans Petter Selasky 768d59ecb2SHans Petter Selasky #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 778d59ecb2SHans Petter Selasky #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 788d59ecb2SHans Petter Selasky #define PCI_FUNC(devfn) ((devfn) & 0x07) 798d59ecb2SHans Petter Selasky 808d59ecb2SHans Petter Selasky #define PCI_VDEVICE(_vendor, _device) \ 818d59ecb2SHans Petter Selasky .vendor = PCI_VENDOR_ID_##_vendor, .device = (_device), \ 828d59ecb2SHans Petter Selasky .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 838d59ecb2SHans Petter Selasky #define PCI_DEVICE(_vendor, _device) \ 848d59ecb2SHans Petter Selasky .vendor = (_vendor), .device = (_device), \ 858d59ecb2SHans Petter Selasky .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 868d59ecb2SHans Petter Selasky 878d59ecb2SHans Petter Selasky #define to_pci_dev(n) container_of(n, struct pci_dev, dev) 888d59ecb2SHans Petter Selasky 898d59ecb2SHans Petter Selasky #define PCI_VENDOR_ID PCIR_DEVVENDOR 908d59ecb2SHans Petter Selasky #define PCI_COMMAND PCIR_COMMAND 918d59ecb2SHans Petter Selasky #define PCI_EXP_DEVCTL PCIER_DEVICE_CTL /* Device Control */ 928d59ecb2SHans Petter Selasky #define PCI_EXP_LNKCTL PCIER_LINK_CTL /* Link Control */ 938d59ecb2SHans Petter Selasky #define PCI_EXP_FLAGS_TYPE PCIEM_FLAGS_TYPE /* Device/Port type */ 948d59ecb2SHans Petter Selasky #define PCI_EXP_DEVCAP PCIER_DEVICE_CAP /* Device capabilities */ 958d59ecb2SHans Petter Selasky #define PCI_EXP_DEVSTA PCIER_DEVICE_STA /* Device Status */ 968d59ecb2SHans Petter Selasky #define PCI_EXP_LNKCAP PCIER_LINK_CAP /* Link Capabilities */ 978d59ecb2SHans Petter Selasky #define PCI_EXP_LNKSTA PCIER_LINK_STA /* Link Status */ 988d59ecb2SHans Petter Selasky #define PCI_EXP_SLTCAP PCIER_SLOT_CAP /* Slot Capabilities */ 998d59ecb2SHans Petter Selasky #define PCI_EXP_SLTCTL PCIER_SLOT_CTL /* Slot Control */ 1008d59ecb2SHans Petter Selasky #define PCI_EXP_SLTSTA PCIER_SLOT_STA /* Slot Status */ 1018d59ecb2SHans Petter Selasky #define PCI_EXP_RTCTL PCIER_ROOT_CTL /* Root Control */ 1028d59ecb2SHans Petter Selasky #define PCI_EXP_RTCAP PCIER_ROOT_CAP /* Root Capabilities */ 1038d59ecb2SHans Petter Selasky #define PCI_EXP_RTSTA PCIER_ROOT_STA /* Root Status */ 1048d59ecb2SHans Petter Selasky #define PCI_EXP_DEVCAP2 PCIER_DEVICE_CAP2 /* Device Capabilities 2 */ 1058d59ecb2SHans Petter Selasky #define PCI_EXP_DEVCTL2 PCIER_DEVICE_CTL2 /* Device Control 2 */ 1068d59ecb2SHans Petter Selasky #define PCI_EXP_LNKCAP2 PCIER_LINK_CAP2 /* Link Capabilities 2 */ 1078d59ecb2SHans Petter Selasky #define PCI_EXP_LNKCTL2 PCIER_LINK_CTL2 /* Link Control 2 */ 1088d59ecb2SHans Petter Selasky #define PCI_EXP_LNKSTA2 PCIER_LINK_STA2 /* Link Status 2 */ 1098d59ecb2SHans Petter Selasky #define PCI_EXP_FLAGS PCIER_FLAGS /* Capabilities register */ 1108d59ecb2SHans Petter Selasky #define PCI_EXP_FLAGS_VERS PCIEM_FLAGS_VERSION /* Capability version */ 1118d59ecb2SHans Petter Selasky #define PCI_EXP_TYPE_ROOT_PORT PCIEM_TYPE_ROOT_PORT /* Root Port */ 1128d59ecb2SHans Petter Selasky #define PCI_EXP_TYPE_ENDPOINT PCIEM_TYPE_ENDPOINT /* Express Endpoint */ 1138d59ecb2SHans Petter Selasky #define PCI_EXP_TYPE_LEG_END PCIEM_TYPE_LEGACY_ENDPOINT /* Legacy Endpoint */ 1148d59ecb2SHans Petter Selasky #define PCI_EXP_TYPE_DOWNSTREAM PCIEM_TYPE_DOWNSTREAM_PORT /* Downstream Port */ 1158d59ecb2SHans Petter Selasky #define PCI_EXP_FLAGS_SLOT PCIEM_FLAGS_SLOT /* Slot implemented */ 1168d59ecb2SHans Petter Selasky #define PCI_EXP_TYPE_RC_EC PCIEM_TYPE_ROOT_EC /* Root Complex Event Collector */ 1178d59ecb2SHans Petter Selasky 1188d59ecb2SHans Petter Selasky 1198d59ecb2SHans Petter Selasky #define IORESOURCE_MEM SYS_RES_MEMORY 1208d59ecb2SHans Petter Selasky #define IORESOURCE_IO SYS_RES_IOPORT 1218d59ecb2SHans Petter Selasky #define IORESOURCE_IRQ SYS_RES_IRQ 1228d59ecb2SHans Petter Selasky 1238d59ecb2SHans Petter Selasky struct pci_dev; 1248d59ecb2SHans Petter Selasky 1258d59ecb2SHans Petter Selasky 1268d59ecb2SHans Petter Selasky struct pci_driver { 1278d59ecb2SHans Petter Selasky struct list_head links; 1288d59ecb2SHans Petter Selasky char *name; 1298d59ecb2SHans Petter Selasky const struct pci_device_id *id_table; 1308d59ecb2SHans Petter Selasky int (*probe)(struct pci_dev *dev, const struct pci_device_id *id); 1318d59ecb2SHans Petter Selasky void (*remove)(struct pci_dev *dev); 1328d59ecb2SHans Petter Selasky int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ 1338d59ecb2SHans Petter Selasky int (*resume) (struct pci_dev *dev); /* Device woken up */ 1347d133393SHans Petter Selasky void (*shutdown) (struct pci_dev *dev); /* Device shutdown */ 1358d59ecb2SHans Petter Selasky driver_t driver; 1368d59ecb2SHans Petter Selasky devclass_t bsdclass; 1378d59ecb2SHans Petter Selasky const struct pci_error_handlers *err_handler; 1388d59ecb2SHans Petter Selasky }; 1398d59ecb2SHans Petter Selasky 1408d59ecb2SHans Petter Selasky extern struct list_head pci_drivers; 1418d59ecb2SHans Petter Selasky extern struct list_head pci_devices; 1428d59ecb2SHans Petter Selasky extern spinlock_t pci_lock; 1438d59ecb2SHans Petter Selasky 1448d59ecb2SHans Petter Selasky #define __devexit_p(x) x 1458d59ecb2SHans Petter Selasky 1468d59ecb2SHans Petter Selasky struct pci_dev { 1478d59ecb2SHans Petter Selasky struct device dev; 1488d59ecb2SHans Petter Selasky struct list_head links; 1498d59ecb2SHans Petter Selasky struct pci_driver *pdrv; 1508d59ecb2SHans Petter Selasky uint64_t dma_mask; 1518d59ecb2SHans Petter Selasky uint16_t device; 1528d59ecb2SHans Petter Selasky uint16_t vendor; 1538d59ecb2SHans Petter Selasky unsigned int irq; 1548d59ecb2SHans Petter Selasky unsigned int devfn; 1558d59ecb2SHans Petter Selasky u8 revision; 1568d59ecb2SHans Petter Selasky }; 1578d59ecb2SHans Petter Selasky 1588d59ecb2SHans Petter Selasky static inline struct resource_list_entry * 1598d59ecb2SHans Petter Selasky _pci_get_rle(struct pci_dev *pdev, int type, int rid) 1608d59ecb2SHans Petter Selasky { 1618d59ecb2SHans Petter Selasky struct pci_devinfo *dinfo; 1628d59ecb2SHans Petter Selasky struct resource_list *rl; 1638d59ecb2SHans Petter Selasky 1648d59ecb2SHans Petter Selasky dinfo = device_get_ivars(pdev->dev.bsddev); 1658d59ecb2SHans Petter Selasky rl = &dinfo->resources; 1668d59ecb2SHans Petter Selasky return resource_list_find(rl, type, rid); 1678d59ecb2SHans Petter Selasky } 1688d59ecb2SHans Petter Selasky 1698d59ecb2SHans Petter Selasky static inline struct resource_list_entry * 1708d59ecb2SHans Petter Selasky _pci_get_bar(struct pci_dev *pdev, int bar) 1718d59ecb2SHans Petter Selasky { 1728d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 1738d59ecb2SHans Petter Selasky 1748d59ecb2SHans Petter Selasky bar = PCIR_BAR(bar); 1758d59ecb2SHans Petter Selasky if ((rle = _pci_get_rle(pdev, SYS_RES_MEMORY, bar)) == NULL) 1768d59ecb2SHans Petter Selasky rle = _pci_get_rle(pdev, SYS_RES_IOPORT, bar); 1778d59ecb2SHans Petter Selasky return (rle); 1788d59ecb2SHans Petter Selasky } 1798d59ecb2SHans Petter Selasky 1808d59ecb2SHans Petter Selasky static inline struct device * 1818d59ecb2SHans Petter Selasky _pci_find_irq_dev(unsigned int irq) 1828d59ecb2SHans Petter Selasky { 1838d59ecb2SHans Petter Selasky struct pci_dev *pdev; 1848d59ecb2SHans Petter Selasky 1858d59ecb2SHans Petter Selasky spin_lock(&pci_lock); 1868d59ecb2SHans Petter Selasky list_for_each_entry(pdev, &pci_devices, links) { 1878d59ecb2SHans Petter Selasky if (irq == pdev->dev.irq) 1888d59ecb2SHans Petter Selasky break; 1898d59ecb2SHans Petter Selasky if (irq >= pdev->dev.msix && irq < pdev->dev.msix_max) 1908d59ecb2SHans Petter Selasky break; 1918d59ecb2SHans Petter Selasky } 1928d59ecb2SHans Petter Selasky spin_unlock(&pci_lock); 1938d59ecb2SHans Petter Selasky if (pdev) 1948d59ecb2SHans Petter Selasky return &pdev->dev; 1958d59ecb2SHans Petter Selasky return (NULL); 1968d59ecb2SHans Petter Selasky } 1978d59ecb2SHans Petter Selasky 1988d59ecb2SHans Petter Selasky static inline unsigned long 1998d59ecb2SHans Petter Selasky pci_resource_start(struct pci_dev *pdev, int bar) 2008d59ecb2SHans Petter Selasky { 2018d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 2028d59ecb2SHans Petter Selasky 2038d59ecb2SHans Petter Selasky if ((rle = _pci_get_bar(pdev, bar)) == NULL) 2048d59ecb2SHans Petter Selasky return (0); 2058d59ecb2SHans Petter Selasky return rle->start; 2068d59ecb2SHans Petter Selasky } 2078d59ecb2SHans Petter Selasky 2088d59ecb2SHans Petter Selasky static inline unsigned long 2098d59ecb2SHans Petter Selasky pci_resource_len(struct pci_dev *pdev, int bar) 2108d59ecb2SHans Petter Selasky { 2118d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 2128d59ecb2SHans Petter Selasky 2138d59ecb2SHans Petter Selasky if ((rle = _pci_get_bar(pdev, bar)) == NULL) 2148d59ecb2SHans Petter Selasky return (0); 2158d59ecb2SHans Petter Selasky return rle->count; 2168d59ecb2SHans Petter Selasky } 2178d59ecb2SHans Petter Selasky 2188d59ecb2SHans Petter Selasky /* 2198d59ecb2SHans Petter Selasky * All drivers just seem to want to inspect the type not flags. 2208d59ecb2SHans Petter Selasky */ 2218d59ecb2SHans Petter Selasky static inline int 2228d59ecb2SHans Petter Selasky pci_resource_flags(struct pci_dev *pdev, int bar) 2238d59ecb2SHans Petter Selasky { 2248d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 2258d59ecb2SHans Petter Selasky 2268d59ecb2SHans Petter Selasky if ((rle = _pci_get_bar(pdev, bar)) == NULL) 2278d59ecb2SHans Petter Selasky return (0); 2288d59ecb2SHans Petter Selasky return rle->type; 2298d59ecb2SHans Petter Selasky } 2308d59ecb2SHans Petter Selasky 2318d59ecb2SHans Petter Selasky static inline const char * 2328d59ecb2SHans Petter Selasky pci_name(struct pci_dev *d) 2338d59ecb2SHans Petter Selasky { 2348d59ecb2SHans Petter Selasky 2358d59ecb2SHans Petter Selasky return device_get_desc(d->dev.bsddev); 2368d59ecb2SHans Petter Selasky } 2378d59ecb2SHans Petter Selasky 2388d59ecb2SHans Petter Selasky static inline void * 2398d59ecb2SHans Petter Selasky pci_get_drvdata(struct pci_dev *pdev) 2408d59ecb2SHans Petter Selasky { 2418d59ecb2SHans Petter Selasky 2428d59ecb2SHans Petter Selasky return dev_get_drvdata(&pdev->dev); 2438d59ecb2SHans Petter Selasky } 2448d59ecb2SHans Petter Selasky 2458d59ecb2SHans Petter Selasky static inline void 2468d59ecb2SHans Petter Selasky pci_set_drvdata(struct pci_dev *pdev, void *data) 2478d59ecb2SHans Petter Selasky { 2488d59ecb2SHans Petter Selasky 2498d59ecb2SHans Petter Selasky dev_set_drvdata(&pdev->dev, data); 2508d59ecb2SHans Petter Selasky } 2518d59ecb2SHans Petter Selasky 2528d59ecb2SHans Petter Selasky static inline int 2538d59ecb2SHans Petter Selasky pci_enable_device(struct pci_dev *pdev) 2548d59ecb2SHans Petter Selasky { 2558d59ecb2SHans Petter Selasky 2568d59ecb2SHans Petter Selasky pci_enable_io(pdev->dev.bsddev, SYS_RES_IOPORT); 2578d59ecb2SHans Petter Selasky pci_enable_io(pdev->dev.bsddev, SYS_RES_MEMORY); 2588d59ecb2SHans Petter Selasky return (0); 2598d59ecb2SHans Petter Selasky } 2608d59ecb2SHans Petter Selasky 2618d59ecb2SHans Petter Selasky static inline void 2628d59ecb2SHans Petter Selasky pci_disable_device(struct pci_dev *pdev) 2638d59ecb2SHans Petter Selasky { 2648d59ecb2SHans Petter Selasky } 2658d59ecb2SHans Petter Selasky 2668d59ecb2SHans Petter Selasky static inline int 2678d59ecb2SHans Petter Selasky pci_set_master(struct pci_dev *pdev) 2688d59ecb2SHans Petter Selasky { 2698d59ecb2SHans Petter Selasky 2708d59ecb2SHans Petter Selasky pci_enable_busmaster(pdev->dev.bsddev); 2718d59ecb2SHans Petter Selasky return (0); 2728d59ecb2SHans Petter Selasky } 2738d59ecb2SHans Petter Selasky 2748d59ecb2SHans Petter Selasky static inline int 2758d59ecb2SHans Petter Selasky pci_clear_master(struct pci_dev *pdev) 2768d59ecb2SHans Petter Selasky { 2778d59ecb2SHans Petter Selasky 2788d59ecb2SHans Petter Selasky pci_disable_busmaster(pdev->dev.bsddev); 2798d59ecb2SHans Petter Selasky return (0); 2808d59ecb2SHans Petter Selasky } 2818d59ecb2SHans Petter Selasky 2828d59ecb2SHans Petter Selasky static inline int 2838d59ecb2SHans Petter Selasky pci_request_region(struct pci_dev *pdev, int bar, const char *res_name) 2848d59ecb2SHans Petter Selasky { 2858d59ecb2SHans Petter Selasky int rid; 2868d59ecb2SHans Petter Selasky int type; 2878d59ecb2SHans Petter Selasky 2888d59ecb2SHans Petter Selasky type = pci_resource_flags(pdev, bar); 2898d59ecb2SHans Petter Selasky if (type == 0) 2908d59ecb2SHans Petter Selasky return (-ENODEV); 2918d59ecb2SHans Petter Selasky rid = PCIR_BAR(bar); 2928d59ecb2SHans Petter Selasky if (bus_alloc_resource_any(pdev->dev.bsddev, type, &rid, 2938d59ecb2SHans Petter Selasky RF_ACTIVE) == NULL) 2948d59ecb2SHans Petter Selasky return (-EINVAL); 2958d59ecb2SHans Petter Selasky return (0); 2968d59ecb2SHans Petter Selasky } 2978d59ecb2SHans Petter Selasky 2988d59ecb2SHans Petter Selasky static inline void 2998d59ecb2SHans Petter Selasky pci_release_region(struct pci_dev *pdev, int bar) 3008d59ecb2SHans Petter Selasky { 3018d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 3028d59ecb2SHans Petter Selasky 3038d59ecb2SHans Petter Selasky if ((rle = _pci_get_bar(pdev, bar)) == NULL) 3048d59ecb2SHans Petter Selasky return; 3058d59ecb2SHans Petter Selasky bus_release_resource(pdev->dev.bsddev, rle->type, rle->rid, rle->res); 3068d59ecb2SHans Petter Selasky } 3078d59ecb2SHans Petter Selasky 3088d59ecb2SHans Petter Selasky static inline void 3098d59ecb2SHans Petter Selasky pci_release_regions(struct pci_dev *pdev) 3108d59ecb2SHans Petter Selasky { 3118d59ecb2SHans Petter Selasky int i; 3128d59ecb2SHans Petter Selasky 3138d59ecb2SHans Petter Selasky for (i = 0; i <= PCIR_MAX_BAR_0; i++) 3148d59ecb2SHans Petter Selasky pci_release_region(pdev, i); 3158d59ecb2SHans Petter Selasky } 3168d59ecb2SHans Petter Selasky 3178d59ecb2SHans Petter Selasky static inline int 3188d59ecb2SHans Petter Selasky pci_request_regions(struct pci_dev *pdev, const char *res_name) 3198d59ecb2SHans Petter Selasky { 3208d59ecb2SHans Petter Selasky int error; 3218d59ecb2SHans Petter Selasky int i; 3228d59ecb2SHans Petter Selasky 3238d59ecb2SHans Petter Selasky for (i = 0; i <= PCIR_MAX_BAR_0; i++) { 3248d59ecb2SHans Petter Selasky error = pci_request_region(pdev, i, res_name); 3258d59ecb2SHans Petter Selasky if (error && error != -ENODEV) { 3268d59ecb2SHans Petter Selasky pci_release_regions(pdev); 3278d59ecb2SHans Petter Selasky return (error); 3288d59ecb2SHans Petter Selasky } 3298d59ecb2SHans Petter Selasky } 3308d59ecb2SHans Petter Selasky return (0); 3318d59ecb2SHans Petter Selasky } 3328d59ecb2SHans Petter Selasky 3338d59ecb2SHans Petter Selasky static inline void 3348d59ecb2SHans Petter Selasky pci_disable_msix(struct pci_dev *pdev) 3358d59ecb2SHans Petter Selasky { 3368d59ecb2SHans Petter Selasky 3378d59ecb2SHans Petter Selasky pci_release_msi(pdev->dev.bsddev); 3388d59ecb2SHans Petter Selasky } 3398d59ecb2SHans Petter Selasky 3408d59ecb2SHans Petter Selasky #define PCI_CAP_ID_EXP PCIY_EXPRESS 3418d59ecb2SHans Petter Selasky #define PCI_CAP_ID_PCIX PCIY_PCIX 3428d59ecb2SHans Petter Selasky 3438d59ecb2SHans Petter Selasky 3448d59ecb2SHans Petter Selasky static inline int 3458d59ecb2SHans Petter Selasky pci_find_capability(struct pci_dev *pdev, int capid) 3468d59ecb2SHans Petter Selasky { 3478d59ecb2SHans Petter Selasky int reg; 3488d59ecb2SHans Petter Selasky 3498d59ecb2SHans Petter Selasky if (pci_find_cap(pdev->dev.bsddev, capid, ®)) 3508d59ecb2SHans Petter Selasky return (0); 3518d59ecb2SHans Petter Selasky return (reg); 3528d59ecb2SHans Petter Selasky } 3538d59ecb2SHans Petter Selasky 3548d59ecb2SHans Petter Selasky 3558d59ecb2SHans Petter Selasky 3568d59ecb2SHans Petter Selasky 3578d59ecb2SHans Petter Selasky /** 3588d59ecb2SHans Petter Selasky * pci_pcie_cap - get the saved PCIe capability offset 3598d59ecb2SHans Petter Selasky * @dev: PCI device 3608d59ecb2SHans Petter Selasky * 3618d59ecb2SHans Petter Selasky * PCIe capability offset is calculated at PCI device initialization 3628d59ecb2SHans Petter Selasky * time and saved in the data structure. This function returns saved 3638d59ecb2SHans Petter Selasky * PCIe capability offset. Using this instead of pci_find_capability() 3648d59ecb2SHans Petter Selasky * reduces unnecessary search in the PCI configuration space. If you 3658d59ecb2SHans Petter Selasky * need to calculate PCIe capability offset from raw device for some 3668d59ecb2SHans Petter Selasky * reasons, please use pci_find_capability() instead. 3678d59ecb2SHans Petter Selasky */ 3688d59ecb2SHans Petter Selasky static inline int pci_pcie_cap(struct pci_dev *dev) 3698d59ecb2SHans Petter Selasky { 3708d59ecb2SHans Petter Selasky return pci_find_capability(dev, PCI_CAP_ID_EXP); 3718d59ecb2SHans Petter Selasky } 3728d59ecb2SHans Petter Selasky 3738d59ecb2SHans Petter Selasky 3748d59ecb2SHans Petter Selasky static inline int 3758d59ecb2SHans Petter Selasky pci_read_config_byte(struct pci_dev *pdev, int where, u8 *val) 3768d59ecb2SHans Petter Selasky { 3778d59ecb2SHans Petter Selasky 3788d59ecb2SHans Petter Selasky *val = (u8)pci_read_config(pdev->dev.bsddev, where, 1); 3798d59ecb2SHans Petter Selasky return (0); 3808d59ecb2SHans Petter Selasky } 3818d59ecb2SHans Petter Selasky 3828d59ecb2SHans Petter Selasky static inline int 3838d59ecb2SHans Petter Selasky pci_read_config_word(struct pci_dev *pdev, int where, u16 *val) 3848d59ecb2SHans Petter Selasky { 3858d59ecb2SHans Petter Selasky 3868d59ecb2SHans Petter Selasky *val = (u16)pci_read_config(pdev->dev.bsddev, where, 2); 3878d59ecb2SHans Petter Selasky return (0); 3888d59ecb2SHans Petter Selasky } 3898d59ecb2SHans Petter Selasky 3908d59ecb2SHans Petter Selasky static inline int 3918d59ecb2SHans Petter Selasky pci_read_config_dword(struct pci_dev *pdev, int where, u32 *val) 3928d59ecb2SHans Petter Selasky { 3938d59ecb2SHans Petter Selasky 3948d59ecb2SHans Petter Selasky *val = (u32)pci_read_config(pdev->dev.bsddev, where, 4); 3958d59ecb2SHans Petter Selasky return (0); 3968d59ecb2SHans Petter Selasky } 3978d59ecb2SHans Petter Selasky 3988d59ecb2SHans Petter Selasky static inline int 3998d59ecb2SHans Petter Selasky pci_write_config_byte(struct pci_dev *pdev, int where, u8 val) 4008d59ecb2SHans Petter Selasky { 4018d59ecb2SHans Petter Selasky 4028d59ecb2SHans Petter Selasky pci_write_config(pdev->dev.bsddev, where, val, 1); 4038d59ecb2SHans Petter Selasky return (0); 4048d59ecb2SHans Petter Selasky } 4058d59ecb2SHans Petter Selasky 4068d59ecb2SHans Petter Selasky static inline int 4078d59ecb2SHans Petter Selasky pci_write_config_word(struct pci_dev *pdev, int where, u16 val) 4088d59ecb2SHans Petter Selasky { 4098d59ecb2SHans Petter Selasky 4108d59ecb2SHans Petter Selasky pci_write_config(pdev->dev.bsddev, where, val, 2); 4118d59ecb2SHans Petter Selasky return (0); 4128d59ecb2SHans Petter Selasky } 4138d59ecb2SHans Petter Selasky 4148d59ecb2SHans Petter Selasky static inline int 4158d59ecb2SHans Petter Selasky pci_write_config_dword(struct pci_dev *pdev, int where, u32 val) 4168d59ecb2SHans Petter Selasky { 4178d59ecb2SHans Petter Selasky 4188d59ecb2SHans Petter Selasky pci_write_config(pdev->dev.bsddev, where, val, 4); 4198d59ecb2SHans Petter Selasky return (0); 4208d59ecb2SHans Petter Selasky } 4218d59ecb2SHans Petter Selasky 4228d59ecb2SHans Petter Selasky extern int pci_register_driver(struct pci_driver *pdrv); 4238d59ecb2SHans Petter Selasky extern void pci_unregister_driver(struct pci_driver *pdrv); 4248d59ecb2SHans Petter Selasky 4258d59ecb2SHans Petter Selasky struct msix_entry { 4268d59ecb2SHans Petter Selasky int entry; 4278d59ecb2SHans Petter Selasky int vector; 4288d59ecb2SHans Petter Selasky }; 4298d59ecb2SHans Petter Selasky 4308d59ecb2SHans Petter Selasky /* 4318d59ecb2SHans Petter Selasky * Enable msix, positive errors indicate actual number of available 4328d59ecb2SHans Petter Selasky * vectors. Negative errors are failures. 4338d59ecb2SHans Petter Selasky * 4348d59ecb2SHans Petter Selasky * NB: define added to prevent this definition of pci_enable_msix from 4358d59ecb2SHans Petter Selasky * clashing with the native FreeBSD version. 4368d59ecb2SHans Petter Selasky */ 4378d59ecb2SHans Petter Selasky #define pci_enable_msix linux_pci_enable_msix 4388d59ecb2SHans Petter Selasky static inline int 4398d59ecb2SHans Petter Selasky pci_enable_msix(struct pci_dev *pdev, struct msix_entry *entries, int nreq) 4408d59ecb2SHans Petter Selasky { 4418d59ecb2SHans Petter Selasky struct resource_list_entry *rle; 4428d59ecb2SHans Petter Selasky int error; 4438d59ecb2SHans Petter Selasky int avail; 4448d59ecb2SHans Petter Selasky int i; 4458d59ecb2SHans Petter Selasky 4468d59ecb2SHans Petter Selasky avail = pci_msix_count(pdev->dev.bsddev); 4478d59ecb2SHans Petter Selasky if (avail < nreq) { 4488d59ecb2SHans Petter Selasky if (avail == 0) 4498d59ecb2SHans Petter Selasky return -EINVAL; 4508d59ecb2SHans Petter Selasky return avail; 4518d59ecb2SHans Petter Selasky } 4528d59ecb2SHans Petter Selasky avail = nreq; 4538d59ecb2SHans Petter Selasky if ((error = -pci_alloc_msix(pdev->dev.bsddev, &avail)) != 0) 4548d59ecb2SHans Petter Selasky return error; 4558d59ecb2SHans Petter Selasky /* 4568d59ecb2SHans Petter Selasky * Handle case where "pci_alloc_msix()" may allocate less 4578d59ecb2SHans Petter Selasky * interrupts than available and return with no error: 4588d59ecb2SHans Petter Selasky */ 4598d59ecb2SHans Petter Selasky if (avail < nreq) { 4608d59ecb2SHans Petter Selasky pci_release_msi(pdev->dev.bsddev); 4618d59ecb2SHans Petter Selasky return avail; 4628d59ecb2SHans Petter Selasky } 4638d59ecb2SHans Petter Selasky rle = _pci_get_rle(pdev, SYS_RES_IRQ, 1); 4648d59ecb2SHans Petter Selasky pdev->dev.msix = rle->start; 4658d59ecb2SHans Petter Selasky pdev->dev.msix_max = rle->start + avail; 4668d59ecb2SHans Petter Selasky for (i = 0; i < nreq; i++) 4678d59ecb2SHans Petter Selasky entries[i].vector = pdev->dev.msix + i; 4688d59ecb2SHans Petter Selasky return (0); 4698d59ecb2SHans Petter Selasky } 4708d59ecb2SHans Petter Selasky 4718d59ecb2SHans Petter Selasky #define pci_enable_msix_range linux_pci_enable_msix_range 4728d59ecb2SHans Petter Selasky static inline int 4738d59ecb2SHans Petter Selasky pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, 4748d59ecb2SHans Petter Selasky int minvec, int maxvec) 4758d59ecb2SHans Petter Selasky { 4768d59ecb2SHans Petter Selasky int nvec = maxvec; 4778d59ecb2SHans Petter Selasky int rc; 4788d59ecb2SHans Petter Selasky 4798d59ecb2SHans Petter Selasky if (maxvec < minvec) 4808d59ecb2SHans Petter Selasky return (-ERANGE); 4818d59ecb2SHans Petter Selasky 4828d59ecb2SHans Petter Selasky do { 4838d59ecb2SHans Petter Selasky rc = pci_enable_msix(dev, entries, nvec); 4848d59ecb2SHans Petter Selasky if (rc < 0) { 4858d59ecb2SHans Petter Selasky return (rc); 4868d59ecb2SHans Petter Selasky } else if (rc > 0) { 4878d59ecb2SHans Petter Selasky if (rc < minvec) 4888d59ecb2SHans Petter Selasky return (-ENOSPC); 4898d59ecb2SHans Petter Selasky nvec = rc; 4908d59ecb2SHans Petter Selasky } 4918d59ecb2SHans Petter Selasky } while (rc); 4928d59ecb2SHans Petter Selasky return (nvec); 4938d59ecb2SHans Petter Selasky } 4948d59ecb2SHans Petter Selasky 4958d59ecb2SHans Petter Selasky static inline int pci_channel_offline(struct pci_dev *pdev) 4968d59ecb2SHans Petter Selasky { 4978d59ecb2SHans Petter Selasky return false; 4988d59ecb2SHans Petter Selasky } 4998d59ecb2SHans Petter Selasky 5008d59ecb2SHans Petter Selasky static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) 5018d59ecb2SHans Petter Selasky { 5028d59ecb2SHans Petter Selasky return -ENODEV; 5038d59ecb2SHans Petter Selasky } 5048d59ecb2SHans Petter Selasky static inline void pci_disable_sriov(struct pci_dev *dev) 5058d59ecb2SHans Petter Selasky { 5068d59ecb2SHans Petter Selasky } 5078d59ecb2SHans Petter Selasky 5088d59ecb2SHans Petter Selasky /** 5098d59ecb2SHans Petter Selasky * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table 5108d59ecb2SHans Petter Selasky * @_table: device table name 5118d59ecb2SHans Petter Selasky * 5128d59ecb2SHans Petter Selasky * This macro is used to create a struct pci_device_id array (a device table) 5138d59ecb2SHans Petter Selasky * in a generic manner. 5148d59ecb2SHans Petter Selasky */ 5158d59ecb2SHans Petter Selasky #define DEFINE_PCI_DEVICE_TABLE(_table) \ 5168d59ecb2SHans Petter Selasky const struct pci_device_id _table[] __devinitdata 5178d59ecb2SHans Petter Selasky 5188d59ecb2SHans Petter Selasky 5198d59ecb2SHans Petter Selasky /* XXX This should not be necessary. */ 5208d59ecb2SHans Petter Selasky #define pcix_set_mmrbc(d, v) 0 5218d59ecb2SHans Petter Selasky #define pcix_get_max_mmrbc(d) 0 5228d59ecb2SHans Petter Selasky #define pcie_set_readrq(d, v) 0 5238d59ecb2SHans Petter Selasky 5248d59ecb2SHans Petter Selasky #define PCI_DMA_BIDIRECTIONAL 0 5258d59ecb2SHans Petter Selasky #define PCI_DMA_TODEVICE 1 5268d59ecb2SHans Petter Selasky #define PCI_DMA_FROMDEVICE 2 5278d59ecb2SHans Petter Selasky #define PCI_DMA_NONE 3 5288d59ecb2SHans Petter Selasky 5298d59ecb2SHans Petter Selasky #define pci_pool dma_pool 5308d59ecb2SHans Petter Selasky #define pci_pool_destroy dma_pool_destroy 5318d59ecb2SHans Petter Selasky #define pci_pool_alloc dma_pool_alloc 5328d59ecb2SHans Petter Selasky #define pci_pool_free dma_pool_free 5338d59ecb2SHans Petter Selasky #define pci_pool_create(_name, _pdev, _size, _align, _alloc) \ 5348d59ecb2SHans Petter Selasky dma_pool_create(_name, &(_pdev)->dev, _size, _align, _alloc) 5358d59ecb2SHans Petter Selasky #define pci_free_consistent(_hwdev, _size, _vaddr, _dma_handle) \ 5368d59ecb2SHans Petter Selasky dma_free_coherent((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 5378d59ecb2SHans Petter Selasky _size, _vaddr, _dma_handle) 5388d59ecb2SHans Petter Selasky #define pci_map_sg(_hwdev, _sg, _nents, _dir) \ 5398d59ecb2SHans Petter Selasky dma_map_sg((_hwdev) == NULL ? NULL : &(_hwdev->dev), \ 5408d59ecb2SHans Petter Selasky _sg, _nents, (enum dma_data_direction)_dir) 5418d59ecb2SHans Petter Selasky #define pci_map_single(_hwdev, _ptr, _size, _dir) \ 5428d59ecb2SHans Petter Selasky dma_map_single((_hwdev) == NULL ? NULL : &(_hwdev->dev), \ 5438d59ecb2SHans Petter Selasky (_ptr), (_size), (enum dma_data_direction)_dir) 5448d59ecb2SHans Petter Selasky #define pci_unmap_single(_hwdev, _addr, _size, _dir) \ 5458d59ecb2SHans Petter Selasky dma_unmap_single((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 5468d59ecb2SHans Petter Selasky _addr, _size, (enum dma_data_direction)_dir) 5478d59ecb2SHans Petter Selasky #define pci_unmap_sg(_hwdev, _sg, _nents, _dir) \ 5488d59ecb2SHans Petter Selasky dma_unmap_sg((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 5498d59ecb2SHans Petter Selasky _sg, _nents, (enum dma_data_direction)_dir) 5508d59ecb2SHans Petter Selasky #define pci_map_page(_hwdev, _page, _offset, _size, _dir) \ 5518d59ecb2SHans Petter Selasky dma_map_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, _page,\ 5528d59ecb2SHans Petter Selasky _offset, _size, (enum dma_data_direction)_dir) 5538d59ecb2SHans Petter Selasky #define pci_unmap_page(_hwdev, _dma_address, _size, _dir) \ 5548d59ecb2SHans Petter Selasky dma_unmap_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \ 5558d59ecb2SHans Petter Selasky _dma_address, _size, (enum dma_data_direction)_dir) 5568d59ecb2SHans Petter Selasky #define pci_set_dma_mask(_pdev, mask) dma_set_mask(&(_pdev)->dev, (mask)) 5578d59ecb2SHans Petter Selasky #define pci_dma_mapping_error(_pdev, _dma_addr) \ 5588d59ecb2SHans Petter Selasky dma_mapping_error(&(_pdev)->dev, _dma_addr) 5598d59ecb2SHans Petter Selasky #define pci_set_consistent_dma_mask(_pdev, _mask) \ 5608d59ecb2SHans Petter Selasky dma_set_coherent_mask(&(_pdev)->dev, (_mask)) 5618d59ecb2SHans Petter Selasky #define DECLARE_PCI_UNMAP_ADDR(x) DEFINE_DMA_UNMAP_ADDR(x); 5628d59ecb2SHans Petter Selasky #define DECLARE_PCI_UNMAP_LEN(x) DEFINE_DMA_UNMAP_LEN(x); 5638d59ecb2SHans Petter Selasky #define pci_unmap_addr dma_unmap_addr 5648d59ecb2SHans Petter Selasky #define pci_unmap_addr_set dma_unmap_addr_set 5658d59ecb2SHans Petter Selasky #define pci_unmap_len dma_unmap_len 5668d59ecb2SHans Petter Selasky #define pci_unmap_len_set dma_unmap_len_set 5678d59ecb2SHans Petter Selasky 5688d59ecb2SHans Petter Selasky typedef unsigned int __bitwise pci_channel_state_t; 5698d59ecb2SHans Petter Selasky typedef unsigned int __bitwise pci_ers_result_t; 5708d59ecb2SHans Petter Selasky 5718d59ecb2SHans Petter Selasky enum pci_channel_state { 5728d59ecb2SHans Petter Selasky /* I/O channel is in normal state */ 5738d59ecb2SHans Petter Selasky pci_channel_io_normal = (__force pci_channel_state_t) 1, 5748d59ecb2SHans Petter Selasky 5758d59ecb2SHans Petter Selasky /* I/O to channel is blocked */ 5768d59ecb2SHans Petter Selasky pci_channel_io_frozen = (__force pci_channel_state_t) 2, 5778d59ecb2SHans Petter Selasky 5788d59ecb2SHans Petter Selasky /* PCI card is dead */ 5798d59ecb2SHans Petter Selasky pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, 5808d59ecb2SHans Petter Selasky }; 5818d59ecb2SHans Petter Selasky 5828d59ecb2SHans Petter Selasky enum pci_ers_result { 5838d59ecb2SHans Petter Selasky /* no result/none/not supported in device driver */ 5848d59ecb2SHans Petter Selasky PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, 5858d59ecb2SHans Petter Selasky 5868d59ecb2SHans Petter Selasky /* Device driver can recover without slot reset */ 5878d59ecb2SHans Petter Selasky PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, 5888d59ecb2SHans Petter Selasky 5898d59ecb2SHans Petter Selasky /* Device driver wants slot to be reset. */ 5908d59ecb2SHans Petter Selasky PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, 5918d59ecb2SHans Petter Selasky 5928d59ecb2SHans Petter Selasky /* Device has completely failed, is unrecoverable */ 5938d59ecb2SHans Petter Selasky PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, 5948d59ecb2SHans Petter Selasky 5958d59ecb2SHans Petter Selasky /* Device driver is fully recovered and operational */ 5968d59ecb2SHans Petter Selasky PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, 5978d59ecb2SHans Petter Selasky }; 5988d59ecb2SHans Petter Selasky 5998d59ecb2SHans Petter Selasky 6008d59ecb2SHans Petter Selasky /* PCI bus error event callbacks */ 6018d59ecb2SHans Petter Selasky struct pci_error_handlers { 6028d59ecb2SHans Petter Selasky /* PCI bus error detected on this device */ 6038d59ecb2SHans Petter Selasky pci_ers_result_t (*error_detected)(struct pci_dev *dev, 6048d59ecb2SHans Petter Selasky enum pci_channel_state error); 6058d59ecb2SHans Petter Selasky 6068d59ecb2SHans Petter Selasky /* MMIO has been re-enabled, but not DMA */ 6078d59ecb2SHans Petter Selasky pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); 6088d59ecb2SHans Petter Selasky 6098d59ecb2SHans Petter Selasky /* PCI Express link has been reset */ 6108d59ecb2SHans Petter Selasky pci_ers_result_t (*link_reset)(struct pci_dev *dev); 6118d59ecb2SHans Petter Selasky 6128d59ecb2SHans Petter Selasky /* PCI slot has been reset */ 6138d59ecb2SHans Petter Selasky pci_ers_result_t (*slot_reset)(struct pci_dev *dev); 6148d59ecb2SHans Petter Selasky 6158d59ecb2SHans Petter Selasky /* Device driver may resume normal operations */ 6168d59ecb2SHans Petter Selasky void (*resume)(struct pci_dev *dev); 6178d59ecb2SHans Petter Selasky }; 6188d59ecb2SHans Petter Selasky 6198d59ecb2SHans Petter Selasky /* freeBSD does not support SRIOV - yet */ 6208d59ecb2SHans Petter Selasky static inline struct pci_dev *pci_physfn(struct pci_dev *dev) 6218d59ecb2SHans Petter Selasky { 6228d59ecb2SHans Petter Selasky return dev; 6238d59ecb2SHans Petter Selasky } 6248d59ecb2SHans Petter Selasky 6258d59ecb2SHans Petter Selasky static inline bool pci_is_pcie(struct pci_dev *dev) 6268d59ecb2SHans Petter Selasky { 6278d59ecb2SHans Petter Selasky return !!pci_pcie_cap(dev); 6288d59ecb2SHans Petter Selasky } 6298d59ecb2SHans Petter Selasky 6308d59ecb2SHans Petter Selasky static inline u16 pcie_flags_reg(struct pci_dev *dev) 6318d59ecb2SHans Petter Selasky { 6328d59ecb2SHans Petter Selasky int pos; 6338d59ecb2SHans Petter Selasky u16 reg16; 6348d59ecb2SHans Petter Selasky 6358d59ecb2SHans Petter Selasky pos = pci_find_capability(dev, PCI_CAP_ID_EXP); 6368d59ecb2SHans Petter Selasky if (!pos) 6378d59ecb2SHans Petter Selasky return 0; 6388d59ecb2SHans Petter Selasky 6398d59ecb2SHans Petter Selasky pci_read_config_word(dev, pos + PCI_EXP_FLAGS, ®16); 6408d59ecb2SHans Petter Selasky 6418d59ecb2SHans Petter Selasky return reg16; 6428d59ecb2SHans Petter Selasky } 6438d59ecb2SHans Petter Selasky 6448d59ecb2SHans Petter Selasky 6458d59ecb2SHans Petter Selasky static inline int pci_pcie_type(struct pci_dev *dev) 6468d59ecb2SHans Petter Selasky { 6478d59ecb2SHans Petter Selasky return (pcie_flags_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; 6488d59ecb2SHans Petter Selasky } 6498d59ecb2SHans Petter Selasky 6508d59ecb2SHans Petter Selasky static inline int pcie_cap_version(struct pci_dev *dev) 6518d59ecb2SHans Petter Selasky { 6528d59ecb2SHans Petter Selasky return pcie_flags_reg(dev) & PCI_EXP_FLAGS_VERS; 6538d59ecb2SHans Petter Selasky } 6548d59ecb2SHans Petter Selasky 6558d59ecb2SHans Petter Selasky static inline bool pcie_cap_has_lnkctl(struct pci_dev *dev) 6568d59ecb2SHans Petter Selasky { 6578d59ecb2SHans Petter Selasky int type = pci_pcie_type(dev); 6588d59ecb2SHans Petter Selasky 6598d59ecb2SHans Petter Selasky return pcie_cap_version(dev) > 1 || 6608d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_ROOT_PORT || 6618d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_ENDPOINT || 6628d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_LEG_END; 6638d59ecb2SHans Petter Selasky } 6648d59ecb2SHans Petter Selasky 6658d59ecb2SHans Petter Selasky static inline bool pcie_cap_has_devctl(const struct pci_dev *dev) 6668d59ecb2SHans Petter Selasky { 6678d59ecb2SHans Petter Selasky return true; 6688d59ecb2SHans Petter Selasky } 6698d59ecb2SHans Petter Selasky 6708d59ecb2SHans Petter Selasky static inline bool pcie_cap_has_sltctl(struct pci_dev *dev) 6718d59ecb2SHans Petter Selasky { 6728d59ecb2SHans Petter Selasky int type = pci_pcie_type(dev); 6738d59ecb2SHans Petter Selasky 6748d59ecb2SHans Petter Selasky return pcie_cap_version(dev) > 1 || 6758d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_ROOT_PORT || 6768d59ecb2SHans Petter Selasky (type == PCI_EXP_TYPE_DOWNSTREAM && 6778d59ecb2SHans Petter Selasky pcie_flags_reg(dev) & PCI_EXP_FLAGS_SLOT); 6788d59ecb2SHans Petter Selasky } 6798d59ecb2SHans Petter Selasky 6808d59ecb2SHans Petter Selasky static inline bool pcie_cap_has_rtctl(struct pci_dev *dev) 6818d59ecb2SHans Petter Selasky { 6828d59ecb2SHans Petter Selasky int type = pci_pcie_type(dev); 6838d59ecb2SHans Petter Selasky 6848d59ecb2SHans Petter Selasky return pcie_cap_version(dev) > 1 || 6858d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_ROOT_PORT || 6868d59ecb2SHans Petter Selasky type == PCI_EXP_TYPE_RC_EC; 6878d59ecb2SHans Petter Selasky } 6888d59ecb2SHans Petter Selasky 6898d59ecb2SHans Petter Selasky static bool pcie_capability_reg_implemented(struct pci_dev *dev, int pos) 6908d59ecb2SHans Petter Selasky { 6918d59ecb2SHans Petter Selasky if (!pci_is_pcie(dev)) 6928d59ecb2SHans Petter Selasky return false; 6938d59ecb2SHans Petter Selasky 6948d59ecb2SHans Petter Selasky switch (pos) { 6958d59ecb2SHans Petter Selasky case PCI_EXP_FLAGS_TYPE: 6968d59ecb2SHans Petter Selasky return true; 6978d59ecb2SHans Petter Selasky case PCI_EXP_DEVCAP: 6988d59ecb2SHans Petter Selasky case PCI_EXP_DEVCTL: 6998d59ecb2SHans Petter Selasky case PCI_EXP_DEVSTA: 7008d59ecb2SHans Petter Selasky return pcie_cap_has_devctl(dev); 7018d59ecb2SHans Petter Selasky case PCI_EXP_LNKCAP: 7028d59ecb2SHans Petter Selasky case PCI_EXP_LNKCTL: 7038d59ecb2SHans Petter Selasky case PCI_EXP_LNKSTA: 7048d59ecb2SHans Petter Selasky return pcie_cap_has_lnkctl(dev); 7058d59ecb2SHans Petter Selasky case PCI_EXP_SLTCAP: 7068d59ecb2SHans Petter Selasky case PCI_EXP_SLTCTL: 7078d59ecb2SHans Petter Selasky case PCI_EXP_SLTSTA: 7088d59ecb2SHans Petter Selasky return pcie_cap_has_sltctl(dev); 7098d59ecb2SHans Petter Selasky case PCI_EXP_RTCTL: 7108d59ecb2SHans Petter Selasky case PCI_EXP_RTCAP: 7118d59ecb2SHans Petter Selasky case PCI_EXP_RTSTA: 7128d59ecb2SHans Petter Selasky return pcie_cap_has_rtctl(dev); 7138d59ecb2SHans Petter Selasky case PCI_EXP_DEVCAP2: 7148d59ecb2SHans Petter Selasky case PCI_EXP_DEVCTL2: 7158d59ecb2SHans Petter Selasky case PCI_EXP_LNKCAP2: 7168d59ecb2SHans Petter Selasky case PCI_EXP_LNKCTL2: 7178d59ecb2SHans Petter Selasky case PCI_EXP_LNKSTA2: 7188d59ecb2SHans Petter Selasky return pcie_cap_version(dev) > 1; 7198d59ecb2SHans Petter Selasky default: 7208d59ecb2SHans Petter Selasky return false; 7218d59ecb2SHans Petter Selasky } 7228d59ecb2SHans Petter Selasky } 7238d59ecb2SHans Petter Selasky 7248d59ecb2SHans Petter Selasky 7258d59ecb2SHans Petter Selasky static inline int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val) 7268d59ecb2SHans Petter Selasky { 7278d59ecb2SHans Petter Selasky if (pos & 1) 7288d59ecb2SHans Petter Selasky return -EINVAL; 7298d59ecb2SHans Petter Selasky 7308d59ecb2SHans Petter Selasky if (!pcie_capability_reg_implemented(dev, pos)) 7318d59ecb2SHans Petter Selasky return 0; 7328d59ecb2SHans Petter Selasky 7338d59ecb2SHans Petter Selasky return pci_write_config_word(dev, pci_pcie_cap(dev) + pos, val); 7348d59ecb2SHans Petter Selasky } 7358d59ecb2SHans Petter Selasky 7368d59ecb2SHans Petter Selasky #endif /* _LINUX_PCI_H_ */ 737