projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| f67539c2 TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright(C) 2019 Marvell International Ltd. | |
| 3 | */ | |
| 4 | ||
| 5 | #ifndef _DPI_MSG_H_ | |
| 6 | #define _DPI_MSG_H_ | |
| 7 | ||
| 8 | #include <dirent.h> | |
| 9 | #include <fcntl.h> | |
| 10 | #include <string.h> | |
| 11 | #include <unistd.h> | |
| 12 | ||
| 13 | #include "otx2_dpi_rawdev.h" | |
| 14 | ||
| 15 | /* DPI PF DBDF information macro's */ | |
| 16 | #define DPI_PF_DBDF_DOMAIN 0 | |
| 17 | #define DPI_PF_DBDF_BUS 5 | |
| 18 | #define DPI_PF_DBDF_DEVICE 0 | |
| 19 | #define DPI_PF_DBDF_FUNCTION 0 | |
| 20 | ||
| 21 | #define DPI_PF_MBOX_SYSFS_ENTRY "dpi_device_config" | |
| 22 | ||
| 23 | union dpi_mbox_message_u { | |
| 24 | uint64_t u[2]; | |
| 25 | struct dpi_mbox_message_s { | |
| 26 | /* VF ID to configure */ | |
| 27 | uint64_t vfid :4; | |
| 28 | /* Command code */ | |
| 29 | uint64_t cmd :4; | |
| 30 | /* Command buffer size in 8-byte words */ | |
| 31 | uint64_t csize :14; | |
| 32 | /* aura of the command buffer */ | |
| 33 | uint64_t aura :20; | |
| 34 | /* SSO PF function */ | |
| 35 | uint64_t sso_pf_func :16; | |
| 36 | /* NPA PF function */ | |
| 37 | uint64_t npa_pf_func :16; | |
| 38 | } s; | |
| 39 | }; | |
| 40 | ||
| 41 | static inline int | |
| 42 | send_msg_to_pf(const char *value, int size) | |
| 43 | { | |
| 44 | char buff[255] = { 0 }; | |
| 45 | int res, fd; | |
| 46 | ||
| 47 | res = snprintf(buff, sizeof(buff), "%s/" PCI_PRI_FMT "/%s", | |
| 48 | rte_pci_get_sysfs_path(), DPI_PF_DBDF_DOMAIN, | |
| 49 | DPI_PF_DBDF_BUS, DPI_PF_DBDF_DEVICE & 0x7, | |
| 50 | DPI_PF_DBDF_FUNCTION & 0x7, DPI_PF_MBOX_SYSFS_ENTRY); | |
| 51 | if ((res < 0) || ((size_t)res > sizeof(buff))) | |
| 52 | return -ERANGE; | |
| 53 | ||
| 54 | fd = open(buff, O_WRONLY); | |
| 55 | if (fd < 0) | |
| 56 | return -EACCES; | |
| 57 | res = write(fd, value, size); | |
| 58 | close(fd); | |
| 59 | if (res < 0) | |
| 60 | return -EACCES; | |
| 61 | ||
| 62 | return 0; | |
| 63 | } | |
| 64 | ||
| 65 | int | |
| 66 | otx2_dpi_queue_open(uint16_t vf_id, uint32_t size, uint32_t gaura) | |
| 67 | { | |
| 68 | union dpi_mbox_message_u mbox_msg; | |
| 69 | int ret = 0; | |
| 70 | ||
| 71 | /* DPI PF driver expects vfid starts from index 0 */ | |
| 72 | mbox_msg.s.vfid = vf_id; | |
| 73 | mbox_msg.s.cmd = DPI_QUEUE_OPEN; | |
| 74 | mbox_msg.s.csize = size; | |
| 75 | mbox_msg.s.aura = gaura; | |
| 76 | mbox_msg.s.sso_pf_func = otx2_sso_pf_func_get(); | |
| 77 | mbox_msg.s.npa_pf_func = otx2_npa_pf_func_get(); | |
| 78 | ||
| 79 | ret = send_msg_to_pf((const char *)&mbox_msg, | |
| 80 | sizeof(mbox_msg)); | |
| 81 | if (ret < 0) | |
| 82 | otx2_dpi_dbg("Failed to send mbox message to dpi pf"); | |
| 83 | ||
| 84 | return ret; | |
| 85 | } | |
| 86 | ||
| 87 | int | |
| 88 | otx2_dpi_queue_close(uint16_t vf_id) | |
| 89 | { | |
| 90 | union dpi_mbox_message_u mbox_msg; | |
| 91 | int ret = 0; | |
| 92 | ||
| 93 | /* DPI PF driver expects vfid starts from index 0 */ | |
| 94 | mbox_msg.s.vfid = vf_id; | |
| 95 | mbox_msg.s.cmd = DPI_QUEUE_CLOSE; | |
| 96 | ||
| 97 | ret = send_msg_to_pf((const char *)&mbox_msg, | |
| 98 | sizeof(mbox_msg)); | |
| 99 | if (ret < 0) | |
| 100 | otx2_dpi_dbg("Failed to send mbox message to dpi pf"); | |
| 101 | ||
| 102 | return ret; | |
| 103 | } | |
| 104 | ||
| 105 | #endif /* _DPI_MSG_H_ */ |