diff options
Diffstat (limited to 'include/pci.h')
| -rw-r--r-- | include/pci.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/include/pci.h b/include/pci.h new file mode 100644 index 0000000..27ecf44 --- /dev/null +++ b/include/pci.h @@ -0,0 +1,212 @@ +/* + * Copyright (c) 2019 Nutanix Inc. All rights reserved. + * + * Authors: Thanos Makatos <thanos@nutanix.com> + * Swapnil Ingle <swapnil.ingle@nutanix.com> + * Felipe Franciosi <felipe@nutanix.com> + * + * 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 Nutanix 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 <COPYRIGHT HOLDER> 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. + * + */ + +#ifndef LIBMUSER_PCI_H +#define LIBMUSER_PCI_H + +#include <stdint.h> +#include <stdbool.h> +#include <linux/pci_regs.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * These are already defined in include/uapi/linux/pci_regs.h, however that + * file doesn't seem to installed. + */ +#define PCI_CFG_SPACE_SIZE 256 +#define PCI_CFG_SPACE_EXP_SIZE 4096 + +/* + * TODO lots of the sizes of each member are defined in pci_regs.h, use those + * instead? + */ + +typedef union { + uint32_t raw; + struct { + uint16_t vid; + uint16_t sid; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_ss_t; +_Static_assert(sizeof(lm_pci_hdr_ss_t) == 0x4, "bad SS size"); + +typedef union { + uint8_t raw; +} __attribute__ ((packed)) lm_pci_hdr_bist_t; +_Static_assert(sizeof(lm_pci_hdr_bist_t) == 0x1, "bad BIST size"); + +typedef union { + uint32_t raw; + union { + struct { + unsigned int region_type:1; + unsigned int locatable:2; + unsigned int prefetchable:1; + unsigned int base_address:28; + } __attribute__ ((packed)) mem; + struct { + unsigned int region_type:1; + unsigned int reserved:1; + unsigned int base_address:30; + } __attribute__ ((packed)) io; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_bar_t; +_Static_assert(sizeof(lm_bar_t) == 0x4, "bad BAR size"); + +typedef union { + uint8_t raw; +} __attribute__ ((packed)) lm_pci_hdr_htype_t; +_Static_assert(sizeof(lm_pci_hdr_htype_t) == 0x1, "bad HTYPE size"); + +typedef union { + uint8_t raw[3]; + struct { + uint8_t pi; + uint8_t scc; + uint8_t bcc; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_cc_t; +_Static_assert(sizeof(lm_pci_hdr_cc_t) == 0x3, "bad CC size"); + +/* device status */ +typedef union { + uint16_t raw; + struct { + unsigned int res1:3; + unsigned int is:1; + unsigned int cl:1; + unsigned int c66:1; + unsigned int res2:1; + unsigned int fbc:1; + unsigned int dpd:1; + unsigned int devt:2; + unsigned int sta:1; + unsigned int rta:1; + unsigned int rma:1; + unsigned int sse:1; + unsigned int dpe:1; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_sts_t; +_Static_assert(sizeof(lm_pci_hdr_sts_t) == 0x2, "bad STS size"); + +typedef union { + uint16_t raw; + struct { + uint8_t iose:1; + uint8_t mse:1; + uint8_t bme:1; + uint8_t sce:1; + uint8_t mwie:1; + uint8_t vga:1; + uint8_t pee:1; + uint8_t zero:1; + uint8_t see:1; + uint8_t fbe:1; + uint8_t id:1; + uint8_t res1:5; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_cmd_t; +_Static_assert(sizeof(lm_pci_hdr_cmd_t) == 0x2, "bad CMD size"); + +typedef union { + uint32_t raw; + struct { + uint16_t vid; + uint16_t did; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_id_t; +_Static_assert(sizeof(lm_pci_hdr_id_t) == 0x4, "bad ID size"); + +typedef union { + uint16_t raw; + struct { + uint8_t iline; + uint8_t ipin; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_intr_t; +_Static_assert(sizeof(lm_pci_hdr_intr_t) == 0x2, "bad INTR size"); + +typedef union { + uint8_t raw[PCI_STD_HEADER_SIZEOF]; + struct { + lm_pci_hdr_id_t id; + lm_pci_hdr_cmd_t cmd; + lm_pci_hdr_sts_t sts; + uint8_t rid; + lm_pci_hdr_cc_t cc; + uint8_t cls; + uint8_t mlt; + lm_pci_hdr_htype_t htype; + lm_pci_hdr_bist_t bist; +#define PCI_BARS_NR 6 + lm_bar_t bars[PCI_BARS_NR]; + uint32_t ccptr; + lm_pci_hdr_ss_t ss; + uint32_t erom; + uint8_t cap; + uint8_t res1[7]; + lm_pci_hdr_intr_t intr; + uint8_t mgnt; + uint8_t mlat; + } __attribute__ ((packed)); +} __attribute__ ((packed)) lm_pci_hdr_t; +_Static_assert(sizeof(lm_pci_hdr_t) == 0x40, "bad PCI header size"); + +typedef struct { + uint8_t raw[PCI_CFG_SPACE_SIZE - PCI_STD_HEADER_SIZEOF]; +} __attribute__ ((packed)) lm_pci_non_std_config_space_t; +_Static_assert(sizeof(lm_pci_non_std_config_space_t) == 0xc0, + "bad non-standard PCI configuration space size"); + +typedef struct { + union { + uint8_t raw[PCI_CFG_SPACE_SIZE]; + struct { + lm_pci_hdr_t hdr; + lm_pci_non_std_config_space_t non_std; + } __attribute__ ((packed)); + } __attribute__ ((packed)); + uint8_t extended[]; +} __attribute__ ((packed)) lm_pci_config_space_t; +_Static_assert(sizeof(lm_pci_config_space_t) == 0x100, + "bad PCI configuration space size"); + +#ifdef __cplusplus +} +#endif + +#endif /* LIBMUSER_PCI_H */ + +/* ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: */ |