diff options
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/qlogic/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed.h | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_dev.c | 19 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_hw.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_hw.h | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_sriov.c | 366 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_sriov.h | 185 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_vf.h | 41 |
9 files changed, 650 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/Kconfig b/drivers/net/ethernet/qlogic/Kconfig index c0a11b5158e7..680d8c736d2b 100644 --- a/drivers/net/ethernet/qlogic/Kconfig +++ b/drivers/net/ethernet/qlogic/Kconfig @@ -98,6 +98,16 @@ config QED ---help--- This enables the support for ... +config QED_SRIOV + bool "QLogic QED 25/40/100Gb SR-IOV support" + depends on QED && PCI_IOV + default y + ---help--- + This configuration parameter enables Single Root Input Output + Virtualization support for QED devices. + This allows for virtual function acceleration in virtualized + environments. + config QEDE tristate "QLogic QED 25/40/100Gb Ethernet NIC" depends on QED diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile index aafa6692e62f..e11a809034ea 100644 --- a/drivers/net/ethernet/qlogic/qed/Makefile +++ b/drivers/net/ethernet/qlogic/qed/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_QED) := qed.o qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \ qed_int.o qed_main.o qed_mcp.o qed_sp_commands.o qed_spq.o qed_l2.o \ qed_selftest.o +qed-$(CONFIG_QED_SRIOV) += qed_sriov.o diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h index cceac3272cce..2e067c7e8f38 100644 --- a/drivers/net/ethernet/qlogic/qed/qed.h +++ b/drivers/net/ethernet/qlogic/qed/qed.h @@ -152,6 +152,7 @@ enum QED_RESOURCES { enum QED_FEATURE { QED_PF_L2_QUE, + QED_VF, QED_MAX_FEATURES, }; @@ -360,6 +361,7 @@ struct qed_hwfn { /* True if the driver requests for the link */ bool b_drv_link_init; + struct qed_pf_iov *pf_iov_info; struct qed_mcp_info *mcp_info; struct qed_hw_cid_data *p_tx_cids; @@ -484,6 +486,10 @@ struct qed_dev { u8 num_hwfns; struct qed_hwfn hwfns[MAX_HWFNS_PER_DEVICE]; + /* SRIOV */ + struct qed_hw_sriov_info *p_iov_info; +#define IS_QED_SRIOV(cdev) (!!(cdev)->p_iov_info) + unsigned long tunn_mode; u32 drv_type; @@ -514,6 +520,7 @@ struct qed_dev { const struct firmware *firmware; }; +#define NUM_OF_VFS(dev) MAX_NUM_VFS_BB #define NUM_OF_SBS(dev) MAX_SB_PER_PATH_BB #define NUM_OF_ENG_PFS(dev) MAX_NUM_PFS_BB diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index b500c86d7d06..7a359c45360f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -30,6 +30,7 @@ #include "qed_mcp.h" #include "qed_reg_addr.h" #include "qed_sp.h" +#include "qed_sriov.h" /* API common to all protocols */ enum BAR_ID { @@ -136,6 +137,7 @@ void qed_resc_free(struct qed_dev *cdev) qed_eq_free(p_hwfn, p_hwfn->p_eq); qed_consq_free(p_hwfn, p_hwfn->p_consq); qed_int_free(p_hwfn); + qed_iov_free(p_hwfn); qed_dmae_info_free(p_hwfn); } } @@ -316,6 +318,10 @@ int qed_resc_alloc(struct qed_dev *cdev) if (rc) goto alloc_err; + rc = qed_iov_alloc(p_hwfn); + if (rc) + goto alloc_err; + /* EQ */ p_eq = qed_eq_alloc(p_hwfn, 256); if (!p_eq) { @@ -373,6 +379,8 @@ void qed_resc_setup(struct qed_dev *cdev) p_hwfn->mcp_info->mfw_mb_length); qed_int_setup(p_hwfn, p_hwfn->p_main_ptt); + + qed_iov_setup(p_hwfn, p_hwfn->p_main_ptt); } } @@ -1238,6 +1246,13 @@ qed_get_hw_info(struct qed_hwfn *p_hwfn, u32 port_mode; int rc; + /* Since all information is common, only first hwfns should do this */ + if (IS_LEAD_HWFN(p_hwfn)) { + rc = qed_iov_hw_info(p_hwfn); + if (rc) + return rc; + } + /* Read the port mode */ port_mode = qed_rd(p_hwfn, p_ptt, CNIG_REG_NW_PORT_MODE_BB_B0); @@ -1397,6 +1412,8 @@ static int qed_hw_prepare_single(struct qed_hwfn *p_hwfn, return rc; err2: + if (IS_LEAD_HWFN(p_hwfn)) + qed_iov_free_hw_info(p_hwfn->cdev); qed_mcp_free(p_hwfn); err1: qed_hw_hwfn_free(p_hwfn); @@ -1463,6 +1480,8 @@ void qed_hw_remove(struct qed_dev *cdev) qed_hw_hwfn_free(p_hwfn); qed_mcp_free(p_hwfn); } + + qed_iov_free_hw_info(cdev); } int qed_chain_alloc(struct qed_dev *cdev, diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c b/drivers/net/ethernet/qlogic/qed/qed_hw.c index a95a3e4b3101..a8cf96c34bef 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hw.c +++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c @@ -338,6 +338,17 @@ void qed_port_unpretend(struct qed_hwfn *p_hwfn, *(u32 *)&p_ptt->pxp.pretend); } +u32 qed_vfid_to_concrete(struct qed_hwfn *p_hwfn, u8 vfid) +{ + u32 concrete_fid = 0; + + SET_FIELD(concrete_fid, PXP_CONCRETE_FID_PFID, p_hwfn->rel_pf_id); + SET_FIELD(concrete_fid, PXP_CONCRETE_FID_VFID, vfid); + SET_FIELD(concrete_fid, PXP_CONCRETE_FID_VFVALID, 1); + + return concrete_fid; +} + /* DMAE */ static void qed_dmae_opcode(struct qed_hwfn *p_hwfn, const u8 is_src_type_grc, diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.h b/drivers/net/ethernet/qlogic/qed/qed_hw.h index e56d433793be..4367363ade40 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hw.h +++ b/drivers/net/ethernet/qlogic/qed/qed_hw.h @@ -221,6 +221,16 @@ void qed_port_unpretend(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); /** + * @brief qed_vfid_to_concrete - build a concrete FID for a + * given VF ID + * + * @param p_hwfn + * @param p_ptt + * @param vfid + */ +u32 qed_vfid_to_concrete(struct qed_hwfn *p_hwfn, u8 vfid); + +/** * @brief qed_dmae_idx_to_go_cmd - map the idx to dmae cmd * this is declared here since other files will require it. * @param idx diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c new file mode 100644 index 000000000000..685e3fa7bc52 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c @@ -0,0 +1,366 @@ +/* QLogic qed NIC Driver + * Copyright (c) 2015 QLogic Corporation + * + * This software is available under the terms of the GNU General Public License + * (GPL) Version 2, available from the file COPYING in the main directory of + * this source tree. + */ + +#include "qed_hw.h" +#include "qed_int.h" +#include "qed_reg_addr.h" +#include "qed_sriov.h" +#include "qed_vf.h" + +bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn, + int rel_vf_id, bool b_enabled_only) +{ + if (!p_hwfn->pf_iov_info) { + DP_NOTICE(p_hwfn->cdev, "No iov info\n"); + return false; + } + + if ((rel_vf_id >= p_hwfn->cdev->p_iov_info->total_vfs) || + (rel_vf_id < 0)) + return false; + + if ((!p_hwfn->pf_iov_info->vfs_array[rel_vf_id].b_init) && + b_enabled_only) + return false; + + return true; +} + +static int qed_iov_pci_cfg_info(struct qed_dev *cdev) +{ + struct qed_hw_sriov_info *iov = cdev->p_iov_info; + int pos = iov->pos; + + DP_VERBOSE(cdev, QED_MSG_IOV, "sriov ext pos %d\n", pos); + pci_read_config_word(cdev->pdev, pos + PCI_SRIOV_CTRL, &iov->ctrl); + + pci_read_config_word(cdev->pdev, + pos + PCI_SRIOV_TOTAL_VF, &iov->total_vfs); + pci_read_config_word(cdev->pdev, + pos + PCI_SRIOV_INITIAL_VF, &iov->initial_vfs); + + pci_read_config_word(cdev->pdev, pos + PCI_SRIOV_NUM_VF, &iov->num_vfs); + if (iov->num_vfs) { + DP_VERBOSE(cdev, + QED_MSG_IOV, + "Number of VFs are already set to non-zero value. Ignoring PCI configuration value\n"); + iov->num_vfs = 0; + } + + pci_read_config_word(cdev->pdev, + pos + PCI_SRIOV_VF_OFFSET, &iov->offset); + + pci_read_config_word(cdev->pdev, + pos + PCI_SRIOV_VF_STRIDE, &iov->stride); + + pci_read_config_word(cdev->pdev, + pos + PCI_SRIOV_VF_DID, &iov->vf_device_id); + + pci_read_config_dword(cdev->pdev, + pos + PCI_SRIOV_SUP_PGSIZE, &iov->pgsz); + + pci_read_config_dword(cdev->pdev, pos + PCI_SRIOV_CAP, &iov->cap); + + pci_read_config_byte(cdev->pdev, pos + PCI_SRIOV_FUNC_LINK, &iov->link); + + DP_VERBOSE(cdev, + QED_MSG_IOV, + "IOV info: nres %d, cap 0x%x, ctrl 0x%x, total %d, initial %d, num vfs %d, offset %d, stride %d, page size 0x%x\n", + iov->nres, + iov->cap, + iov->ctrl, + iov->total_vfs, + iov->initial_vfs, + iov->nr_virtfn, iov->offset, iov->stride, iov->pgsz); + + /* Some sanity checks */ + if (iov->num_vfs > NUM_OF_VFS(cdev) || + iov->total_vfs > NUM_OF_VFS(cdev)) { + /* This can happen only due to a bug. In this case we set + * num_vfs to zero to avoid memory corruption in the code that + * assumes max number of vfs + */ + DP_NOTICE(cdev, + "IOV: Unexpected number of vfs set: %d setting num_vf to zero\n", + iov->num_vfs); + + iov->num_vfs = 0; + iov->total_vfs = 0; + } + + return 0; +} + +static void qed_iov_clear_vf_igu_blocks(struct qed_hwfn *p_hwfn, + struct qed_ptt *p_ptt) +{ + struct qed_igu_block *p_sb; + u16 sb_id; + u32 val; + + if (!p_hwfn->hw_info.p_igu_info) { + DP_ERR(p_hwfn, + "qed_iov_clear_vf_igu_blocks IGU Info not initialized\n"); + return; + } + + for (sb_id = 0; sb_id < QED_MAPPING_MEMORY_SIZE(p_hwfn->cdev); + sb_id++) { + p_sb = &p_hwfn->hw_info.p_igu_info->igu_map.igu_blocks[sb_id]; + if ((p_sb->status & QED_IGU_STATUS_FREE) && + !(p_sb->status & QED_IGU_STATUS_PF)) { + val = qed_rd(p_hwfn, p_ptt, + IGU_REG_MAPPING_MEMORY + sb_id * 4); + SET_FIELD(val, IGU_MAPPING_LINE_VALID, 0); + qed_wr(p_hwfn, p_ptt, + IGU_REG_MAPPING_MEMORY + 4 * sb_id, val); + } + } +} + +static void qed_iov_setup_vfdb(struct qed_hwfn *p_hwfn) +{ + struct qed_hw_sriov_info *p_iov = p_hwfn->cdev->p_iov_info; + struct qed_pf_iov *p_iov_info = p_hwfn->pf_iov_info; + struct qed_bulletin_content *p_bulletin_virt; + dma_addr_t req_p, rply_p, bulletin_p; + union pfvf_tlvs *p_reply_virt_addr; + union vfpf_tlvs *p_req_virt_addr; + u8 idx = 0; + + memset(p_iov_info->vfs_array, 0, sizeof(p_iov_info->vfs_array)); + + p_req_virt_addr = p_iov_info->mbx_msg_virt_addr; + req_p = p_iov_info->mbx_msg_phys_addr; + p_reply_virt_addr = p_iov_info->mbx_reply_virt_addr; + rply_p = p_iov_info->mbx_reply_phys_addr; + p_bulletin_virt = p_iov_info->p_bulletins; + bulletin_p = p_iov_info->bulletins_phys; + if (!p_req_virt_addr || !p_reply_virt_addr || !p_bulletin_virt) { + DP_ERR(p_hwfn, + "qed_iov_setup_vfdb called without allocating mem first\n"); + return; + } + + for (idx = 0; idx < p_iov->total_vfs; idx++) { + struct qed_vf_info *vf = &p_iov_info->vfs_array[idx]; + u32 concrete; + + vf->vf_mbx.req_virt = p_req_virt_addr + idx; + vf->vf_mbx.req_phys = req_p + idx * sizeof(union vfpf_tlvs); + vf->vf_mbx.reply_virt = p_reply_virt_addr + idx; + vf->vf_mbx.reply_phys = rply_p + idx * sizeof(union pfvf_tlvs); + + vf->state = VF_STOPPED; + vf->b_init = false; + + vf->bulletin.phys = idx * + sizeof(struct qed_bulletin_content) + + bulletin_p; + vf->bulletin.p_virt = p_bulletin_virt + idx; + vf->bulletin.size = sizeof(struct qed_bulletin_content); + + vf->relative_vf_id = idx; + vf->abs_vf_id = idx + p_iov->first_vf_in_pf; + concrete = qed_vfid_to_concrete(p_hwfn, vf->abs_vf_id); + vf->concrete_fid = concrete; + vf->opaque_fid = (p_hwfn->hw_info.opaque_fid & 0xff) | + (vf->abs_vf_id << 8); + vf->vport_id = idx + 1; + } +} + +static int qed_iov_allocate_vfdb(struct qed_hwfn *p_hwfn) +{ + struct qed_pf_iov *p_iov_info = p_hwfn->pf_iov_info; + void **p_v_addr; + u16 num_vfs = 0; + + num_vfs = p_hwfn->cdev->p_iov_info->total_vfs; + + DP_VERBOSE(p_hwfn, QED_MSG_IOV, + "qed_iov_allocate_vfdb for %d VFs\n", num_vfs); + + /* Allocate PF Mailbox buffer (per-VF) */ + p_iov_info->mbx_msg_size = sizeof(union vfpf_tlvs) * num_vfs; + p_v_addr = &p_iov_info->mbx_msg_virt_addr; + *p_v_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->mbx_msg_size, + &p_iov_info->mbx_msg_phys_addr, + GFP_KERNEL); + if (!*p_v_addr) + return -ENOMEM; + + /* Allocate PF Mailbox Reply buffer (per-VF) */ + p_iov_info->mbx_reply_size = sizeof(union pfvf_tlvs) * num_vfs; + p_v_addr = &p_iov_info->mbx_reply_virt_addr; + *p_v_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->mbx_reply_size, + &p_iov_info->mbx_reply_phys_addr, + GFP_KERNEL); + if (!*p_v_addr) + return -ENOMEM; + + p_iov_info->bulletins_size = sizeof(struct qed_bulletin_content) * + num_vfs; + p_v_addr = &p_iov_info->p_bulletins; + *p_v_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->bulletins_size, + &p_iov_info->bulletins_phys, + GFP_KERNEL); + if (!*p_v_addr) + return -ENOMEM; + + DP_VERBOSE(p_hwfn, + QED_MSG_IOV, + "PF's Requests mailbox [%p virt 0x%llx phys], Response mailbox [%p virt 0x%llx phys] Bulletins [%p virt 0x%llx phys]\n", + p_iov_info->mbx_msg_virt_addr, + (u64) p_iov_info->mbx_msg_phys_addr, + p_iov_info->mbx_reply_virt_addr, + (u64) p_iov_info->mbx_reply_phys_addr, + p_iov_info->p_bulletins, (u64) p_iov_info->bulletins_phys); + + return 0; +} + +static void qed_iov_free_vfdb(struct qed_hwfn *p_hwfn) +{ + struct qed_pf_iov *p_iov_info = p_hwfn->pf_iov_info; + + if (p_hwfn->pf_iov_info->mbx_msg_virt_addr) + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->mbx_msg_size, + p_iov_info->mbx_msg_virt_addr, + p_iov_info->mbx_msg_phys_addr); + + if (p_hwfn->pf_iov_info->mbx_reply_virt_addr) + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->mbx_reply_size, + p_iov_info->mbx_reply_virt_addr, + p_iov_info->mbx_reply_phys_addr); + + if (p_iov_info->p_bulletins) + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + p_iov_info->bulletins_size, + p_iov_info->p_bulletins, + p_iov_info->bulletins_phys); +} + +int qed_iov_alloc(struct qed_hwfn *p_hwfn) +{ + struct qed_pf_iov *p_sriov; + + if (!IS_PF_SRIOV(p_hwfn)) { + DP_VERBOSE(p_hwfn, QED_MSG_IOV, + "No SR-IOV - no need for IOV db\n"); + return 0; + } + + p_sriov = kzalloc(sizeof(*p_sriov), GFP_KERNEL); + if (!p_sriov) { + DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_sriov'\n"); + return -ENOMEM; + } + + p_hwfn->pf_iov_info = p_sriov; + + return qed_iov_allocate_vfdb(p_hwfn); +} + +void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + if (!IS_PF_SRIOV(p_hwfn) || !IS_PF_SRIOV_ALLOC(p_hwfn)) + return; + + qed_iov_setup_vfdb(p_hwfn); + qed_iov_clear_vf_igu_blocks(p_hwfn, p_ptt); +} + +void qed_iov_free(struct qed_hwfn *p_hwfn) +{ + if (IS_PF_SRIOV_ALLOC(p_hwfn)) { + qed_iov_free_vfdb(p_hwfn); + kfree(p_hwfn->pf_iov_info); + } +} + +void qed_iov_free_hw_info(struct qed_dev *cdev) +{ + kfree(cdev->p_iov_info); + cdev->p_iov_info = NULL; +} + +int qed_iov_hw_info(struct qed_hwfn *p_hwfn) +{ + struct qed_dev *cdev = p_hwfn->cdev; + int pos; + int rc; + + /* Learn the PCI configuration */ + pos = pci_find_ext_capability(p_hwfn->cdev->pdev, + PCI_EXT_CAP_ID_SRIOV); + if (!pos) { + DP_VERBOSE(p_hwfn, QED_MSG_IOV, "No PCIe IOV support\n"); + return 0; + } + + /* Allocate a new struct for IOV information */ + cdev->p_iov_info = kzalloc(sizeof(*cdev->p_iov_info), GFP_KERNEL); + if (!cdev->p_iov_info) { + DP_NOTICE(p_hwfn, "Can't support IOV due to lack of memory\n"); + return -ENOMEM; + } + cdev->p_iov_info->pos = pos; + + rc = qed_iov_pci_cfg_info(cdev); + if (rc) + return rc; + + /* We want PF IOV to be synonemous with the existance of p_iov_info; + * In case the capability is published but there are no VFs, simply + * de-allocate the struct. + */ + if (!cdev->p_iov_info->total_vfs) { + DP_VERBOSE(p_hwfn, QED_MSG_IOV, + "IOV capabilities, but no VFs are published\n"); + kfree(cdev->p_iov_info); + cdev->p_iov_info = NULL; + return 0; + } + + /* Calculate the first VF index - this is a bit tricky; Basically, + * VFs start at offset 16 relative to PF0, and 2nd engine VFs begin + * after the first engine's VFs. + */ + cdev->p_iov_info->first_vf_in_pf = p_hwfn->cdev->p_iov_info->offset + + p_hwfn->abs_pf_id - 16; + if (QED_PATH_ID(p_hwfn)) + cdev->p_iov_info->first_vf_in_pf -= MAX_NUM_VFS_BB; + + DP_VERBOSE(p_hwfn, QED_MSG_IOV, + "First VF in hwfn 0x%08x\n", + cdev->p_iov_info->first_vf_in_pf); + + return 0; +} + +u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id) +{ + struct qed_hw_sriov_info *p_iov = p_hwfn->cdev->p_iov_info; + u16 i; + + if (!p_iov) + goto out; + + for (i = rel_vf_id; i < p_iov->total_vfs; i++) + if (qed_iov_is_valid_vfid(p_hwfn, rel_vf_id, true)) + return i; + +out: + return MAX_NUM_VFS; +} diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.h b/drivers/net/ethernet/qlogic/qed/qed_sriov.h new file mode 100644 index 000000000000..0ac561916e2c --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.h @@ -0,0 +1,185 @@ +/* QLogic qed NIC Driver + * Copyright (c) 2015 QLogic Corporation + * + * This software is available under the terms of the GNU General Public License + * (GPL) Version 2, available from the file COPYING in the main directory of + * this source tree. + */ + +#ifndef _QED_SRIOV_H +#define _QED_SRIOV_H +#include <linux/types.h> +#include "qed_vf.h" +#define QED_VF_ARRAY_LENGTH (3) + +#define IS_VF(cdev) ((cdev)->b_is_vf) +#define IS_PF(cdev) (!((cdev)->b_is_vf)) +#ifdef CONFIG_QED_SRIOV +#define IS_PF_SRIOV(p_hwfn) (!!((p_hwfn)->cdev->p_iov_info)) +#else +#define IS_PF_SRIOV(p_hwfn) (0) +#endif +#define IS_PF_SRIOV_ALLOC(p_hwfn) (!!((p_hwfn)->pf_iov_info)) + +/* This struct is part of qed_dev and contains data relevant to all hwfns; + * Initialized only if SR-IOV cpabability is exposed in PCIe config space. + */ +struct qed_hw_sriov_info { + int pos; /* capability position */ + int nres; /* number of resources */ + u32 cap; /* SR-IOV Capabilities */ + u16 ctrl; /* SR-IOV Control */ + u16 total_vfs; /* total VFs associated with the PF */ + u16 num_vfs; /* number of vfs that have been started */ + u16 initial_vfs; /* initial VFs associated with the PF */ + u16 nr_virtfn; /* number of VFs available */ + u16 offset; /* first VF Routing ID offset */ + u16 stride; /* following VF stride */ + u16 vf_device_id; /* VF device id */ + u32 pgsz; /* page size for BAR alignment */ + u8 link; /* Function Dependency Link */ + + u32 first_vf_in_pf; +}; + +/* This mailbox is maintained per VF in its PF contains all information + * required for sending / receiving a message. + */ +struct qed_iov_vf_mbx { + union vfpf_tlvs *req_virt; + dma_addr_t req_phys; + union pfvf_tlvs *reply_virt; + dma_addr_t reply_phys; +}; + +enum vf_state { + VF_STOPPED /* VF, Stopped */ +}; + +/* PFs maintain an array of this structure, per VF */ +struct qed_vf_info { + struct qed_iov_vf_mbx vf_mbx; + enum vf_state state; + bool b_init; + + struct qed_bulletin bulletin; + dma_addr_t vf_bulletin; + + u32 concrete_fid; + u16 opaque_fid; + + u8 vport_id; + u8 relative_vf_id; + u8 abs_vf_id; +#define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \ + (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \ + (p_vf)->abs_vf_id) +}; + +/* This structure is part of qed_hwfn and used only for PFs that have sriov + * capability enabled. + */ +struct qed_pf_iov { + struct qed_vf_info vfs_array[MAX_NUM_VFS]; + u64 pending_events[QED_VF_ARRAY_LENGTH]; + u64 pending_flr[QED_VF_ARRAY_LENGTH]; + + /* Allocate message address continuosuly and split to each VF */ + void *mbx_msg_virt_addr; + dma_addr_t mbx_msg_phys_addr; + u32 mbx_msg_size; + void *mbx_reply_virt_addr; + dma_addr_t mbx_reply_phys_addr; + u32 mbx_reply_size; + void *p_bulletins; + dma_addr_t bulletins_phys; + u32 bulletins_size; +}; + +#ifdef CONFIG_QED_SRIOV +/** + * @brief - Given a VF index, return index of next [including that] active VF. + * + * @param p_hwfn + * @param rel_vf_id + * + * @return MAX_NUM_VFS in case no further active VFs, otherwise index. + */ +u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id); + +/** + * @brief Read sriov related information and allocated resources + * reads from configuraiton space, shmem, etc. + * + * @param p_hwfn + * + * @return int + */ +int qed_iov_hw_info(struct qed_hwfn *p_hwfn); + +/** + * @brief qed_iov_alloc - allocate sriov related resources + * + * @param p_hwfn + * + * @return int + */ +int qed_iov_alloc(struct qed_hwfn *p_hwfn); + +/** + * @brief qed_iov_setup - setup sriov related resources + * + * @param p_hwfn + * @param p_ptt + */ +void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); + +/** + * @brief qed_iov_free - free sriov related resources + * + * @param p_hwfn + */ +void qed_iov_free(struct qed_hwfn *p_hwfn); + +/** + * @brief free sriov related memory that was allocated during hw_prepare + * + * @param cdev + */ +void qed_iov_free_hw_info(struct qed_dev *cdev); +#else +static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, + u16 rel_vf_id) +{ + return MAX_NUM_VFS; +} + +static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn) +{ + return 0; +} + +static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn) +{ + return 0; +} + +static inline void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ +} + +static inline void qed_iov_free(struct qed_hwfn *p_hwfn) +{ +} + +static inline void qed_iov_free_hw_info(struct qed_dev *cdev) +{ +} +#endif + +#define qed_for_each_vf(_p_hwfn, _i) \ + for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \ + _i < MAX_NUM_VFS; \ + _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1)) + +#endif diff --git a/drivers/net/ethernet/qlogic/qed/qed_vf.h b/drivers/net/ethernet/qlogic/qed/qed_vf.h new file mode 100644 index 000000000000..52cfa4889d88 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_vf.h @@ -0,0 +1,41 @@ +/* QLogic qed NIC Driver + * Copyright (c) 2015 QLogic Corporation + * + * This software is available under the terms of the GNU General Public License + * (GPL) Version 2, available from the file COPYING in the main directory of + * this source tree. + */ + +#ifndef _QED_VF_H +#define _QED_VF_H + +#define TLV_BUFFER_SIZE 1024 +struct tlv_buffer_size { + u8 tlv_buffer[TLV_BUFFER_SIZE]; +}; + +union vfpf_tlvs { + struct tlv_buffer_size tlv_buf_size; +}; + +union pfvf_tlvs { + struct tlv_buffer_size tlv_buf_size; +}; + +struct qed_bulletin_content { + /* crc of structure to ensure is not in mid-update */ + u32 crc; + + u32 version; + + /* bitmap indicating which fields hold valid values */ + u64 valid_bitmap; +}; + +struct qed_bulletin { + dma_addr_t phys; + struct qed_bulletin_content *p_virt; + u32 size; +}; + +#endif |
