/* 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 #include #include #include #include #include #include #include #include #include #include #include #include "qed.h" #include "qed_hsi.h" #include "qed_hw.h" #include "qed_init_ops.h" #include "qed_int.h" #include "qed_mcp.h" #include "qed_reg_addr.h" #include "qed_sp.h" struct qed_pi_info { qed_int_comp_cb_t comp_cb; void *cookie; }; struct qed_sb_sp_info { struct qed_sb_info sb_info; /* per protocol index data */ struct qed_pi_info pi_info_arr[PIS_PER_SB]; }; #define SB_ATTN_ALIGNED_SIZE(p_hwfn) \ ALIGNED_TYPE_SIZE(struct atten_status_block, p_hwfn) #define ATTN_STATE_BITS (0xfff) #define ATTN_BITS_MASKABLE (0x3ff) struct qed_sb_attn_info { /* Virtual & Physical address of the SB */ struct atten_status_block *sb_attn; dma_addr_t sb_phys; /* Last seen running index */ u16 index; /* Previously asserted attentions, which are still unasserted */ u16 known_attn; /* Cleanup address for the link's general hw attention */ u32 mfw_attn_addr; }; static inline u16 qed_attn_update_idx(struct qed_hwfn *p_hwfn, struct qed_sb_attn_info *p_sb_desc) { u16 rc = 0; u16 index; /* Make certain HW write took affect */ mmiowb(); index = le16_to_cpu(p_sb_desc->sb_attn->sb_index); if (p_sb_desc->index != index) { p_sb_desc->index = index; rc = QED_SB_ATT_IDX; } /* Make certain we got a consistent view with HW */ mmiowb(); return rc; } /** * @brief qed_int_assertion - handles asserted attention bits * * @param p_hwfn * @param asserted_bits newly asserted bits * @return int */ static int qed_int_assertion(struct qed_hwfn *p_hwfn, u16 asserted_bits) { struct qed_sb_attn_info *sb_attn_sw = p_hwfn->p_sb_attn; u32 igu_mask; /* Mask the source of the attention in the IGU */ igu_mask = qed_rd(p_hwfn, p_hwfn->p_dpc_ptt, IGU_REG_ATTENTION_ENABLE); DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "IGU mask: 0x%08x --> 0x%08x\n", igu_mask, igu_mask & ~(asserted_bits & ATTN_BITS_MASKABLE)); igu_mask &= ~(asserted_bits & ATTN_BITS_MASKABLE); qed_wr(p_hwfn, p_hwfn->p_dpc_ptt, IGU_REG_ATTENTION_ENABLE, igu_mask); DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "inner known ATTN state: 0x%04x --> 0x%04x\n", sb_attn_sw->known_attn, sb_attn_sw->known_attn | asserted_bits); sb_attn_sw->known_attn |= asserted_bits; /* Handle MCP events */ if (asserted_bits & 0x100) { qed_mcp_handle_events(p_hwfn, p_hwfn->p_dpc_ptt); /* Clean the MCP attention */ qed_wr(p_hwfn, p_hwfn->p_dpc_ptt, sb_attn_sw->mfw_attn_addr, 0); } DIRECT_REG_WR((u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_IGU_CMD + ((IGU_CMD_ATTN_BIT_SET_UPPER - IGU_CMD_INT_ACK_BASE) << 3), (u32)asserted_bits); DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "set cmd IGU: 0x%04x\n", asserted_bits); return 0; } /** * @brief - handles deassertion of previously asserted attentions. * * @param p_hwfn * @param deasserted_bits - newly deasserted bits * @return int * */ static int qed_int_deassertion(struct qed_hwfn *p_hwfn, u16 deasserted_bits) { struct qed_sb_attn_info *sb_attn_sw = p_hwfn->p_sb_attn; u32 aeu_mask; if (deasserted_bits != 0x100) DP_ERR(p_hwfn, "Unexpected - non-link deassertion\n"); /* Clear IGU indication for the deasserted bits */ DIRECT_REG_WR((u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_IGU_CMD + ((IGU_CMD_ATTN_BIT_CLR_UPPER - IGU_CMD_INT_ACK_BASE) << 3), ~((u32)deasserted_bits)); /* Unmask deasserted attentions in IGU */ aeu_mask = qed_rd(p_hwfn, p_hwfn->p_dpc_ptt, IGU_REG_ATTENTION_ENABLE); aeu_mask |= (deasserted_bits & ATTN_BITS_MASKABLE); qed_wr(p_hwfn, p_hwfn->p_dpc_ptt, IGU_REG_ATTENTION_ENABLE, aeu_mask); /* Clear deassertion from inner state */ sb_attn_sw->known_attn &= ~deasserted_bits; return 0; } static int qed_int_attentions(struct qed_hwfn *p_hwfn) { struct qed_sb_attn_info *p_sb_attn_sw = p_hwfn->p_sb_attn; struct atten_status_block *p_sb_attn = p_sb_attn_sw->sb_attn; u32 attn_bits = 0, attn_acks = 0; u16 asserted_bits, deasserted_bits; __le16 index; int rc = 0; /* Read current attention bits/acks - safeguard against attentions * by guaranting work on a synchronized timeframe */ do { index = p_sb_attn->sb_index; attn_bits = le32_to_cpu(p_sb_attn->atten_bits); attn_acks = le32_to_cpu(p_sb_attn->atten_ack); } while (index != p_sb_attn->sb_index); p_sb_attn->sb_index = index; /* Attention / Deassertion are meaningful (and in correct state) * only when they differ and consistent with known state - deassertion * when previous attention & current ack, and assertion when current * attention with no previous attention */ asserted_bits = (attn_bits & ~attn_acks & ATTN_STATE_BITS) & ~p_sb_attn_sw->known_attn; deasserted_bits = (~attn_bits & attn_acks & ATTN_STATE_BITS) & p_sb_attn_sw->known_attn; if ((asserted_bits & ~0x100) || (deasserted_bits & ~0x100)) { DP_INFO(p_hwfn, "Attention: Index: 0x%04x, Bits: 0x%08x, Acks: 0x%08x, asserted: 0x%04x, De-asserted 0x%04x [Prev. known: 0x%04x]\n", index, attn_bits, attn_acks, asserted_bits, deasserted_bits, p_sb_attn_sw->known_attn); } else if (asserted_bits == 0x100) { DP_INFO(p_hwfn, "MFW indication via attention\n"); } else { DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "MFW indication [deassertion]\n"); } if (asserted_bits) { rc = qed_int_assertion(p_hwfn, asserted_bits); if (rc) return rc; } if (deasserted_bits) { rc = qed_int_deassertion(p_hwfn, deasserted_bits); if (rc) return rc; } return rc; } static void qed_sb_ack_attn(struct qed_hwfn *p_hwfn, void __iomem *igu_addr, u32 ack_cons) { struct igu_prod_cons_update igu_ack = { 0 }; igu_ack.sb_id_and_flags = ((ack_cons << IGU_PROD_CONS_UPDATE_SB_INDEX_SHIFT) | (1 << IGU_PROD_CONS_UPDATE_UPDATE_FLAG_SHIFT) | (IGU_INT_NOP << IGU_PROD_CONS_UPDATE_ENABLE_INT_SHIFT) | (IGU_SEG_ACCESS_ATTN << IGU_PROD_CONS_UPDATE_SEGMENT_ACCESS_SHIFT)); DIRECT_REG_WR(igu_addr, igu_ack.sb_id_and_flags); /* Both segments (interrupts & acks) are written to same place address; * Need to guarantee all commands will be received (in-order) by HW. */ mmiowb(); barrier(); } void qed_int_sp_dpc(unsigned long hwfn_cookie) { struct qed_hwfn *p_hwfn = (struct qed_hwfn *)hwfn_cookie; struct qed_pi_info *pi_info = NULL; struct qed_sb_attn_info *sb_attn; struct qed_sb_info *sb_info; int arr_size; u16 rc = 0; if (!p_hwfn->p_sp_sb) { DP_ERR(p_hwfn->cdev, "DPC called - no p_sp_sb\n"); return; } sb_info = &p_hwfn->p_sp_sb->sb_info; arr_size = ARRAY_SIZE(p_hwfn->p_sp_sb->pi_info_arr); if (!sb_info) { DP_ERR(p_hwfn->cdev, "Status block is NULL - cannot ack interrupts\n"); return; } if (!p_hwfn->p_sb_attn) { DP_ERR(p_hwfn->cdev, "DPC called - no p_sb_attn"); return; } sb_attn = p_hwfn->p_sb_attn; DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "DPC Called! (hwfn %p %d)\n", p_hwfn, p_hwfn->my_id); /* Disable ack for def status block. Required both for msix + * inta in non-mask mode, in inta does no harm. */ qed_sb_ack(sb_info, IGU_INT_DISABLE, 0); /* Gather Interrupts/Attentions information */ if (!sb_info->sb_virt) { DP_ERR( p_hwfn->cdev, "Interrupt Status block is NULL - cannot check for new interrupts!\n"); } else { u32 tmp_index = sb_info->sb_ack; rc = qed_sb_update_sb_idx(sb_info); DP_VERBOSE(p_hwfn->cdev, NETIF_MSG_INTR, "Interrupt indices: 0x%08x --> 0x%08x\n", tmp_index, sb_info->sb_ack); } if (!sb_attn || !sb_attn->sb_attn) { DP_ERR( p_hwfn->cdev, "Attentions Status block is NULL - cannot check for new attentions!\n"); } else { u16 tmp_index = sb_attn->index; rc |= qed_attn_update_idx(p_hwfn, sb_attn); DP_VERBOSE(p_hwfn->cdev, NETIF_MSG_INTR, "Attention indices: 0x%08x --> 0x%08x\n", tmp_index, sb_attn->index); } /* Check if we expect interrupts at this time. if not just ack them */ if (!(rc & QED_SB_EVENT_MASK)) { qed_sb_ack(sb_info, IGU_INT_ENABLE, 1); return; } /* Check the validity of the DPC ptt. If not ack interrupts and fail */ if (!p_hwfn->p_dpc_ptt) { DP_NOTICE(p_hwfn->cdev, "Failed to allocate PTT\n"); qed_sb_ack(sb_info, IGU_INT_ENABLE, 1); return; } if (rc & QED_SB_ATT_IDX) qed_int_attentions(p_hwfn); if (rc & QED_SB_IDX) { int pi; /* Look for a free index */ for (pi = 0; pi < arr_size; pi++) { pi_info = &p_hwfn->p_sp_sb->pi_info_arr[pi]; if (pi_info->comp_cb) pi_info->comp_cb(p_hwfn, pi_info->cookie); } } if (sb_attn && (rc & QED_SB_ATT_IDX)) /* This should be done before the interrupts are enabled, * since otherwise a new attention will be generated. */ qed_sb_ack_attn(p_hwfn, sb_info->igu_addr, sb_attn->index); qed_sb_ack(sb_info, IGU_INT_ENABLE, 1); } static void qed_int_sb_attn_free(struct qed_hwfn *p_hwfn) { struct qed_dev *cdev = p_hwfn->cdev; struct qed_sb_attn_info *p_sb = p_hwfn->p_sb_attn; if (p_sb) { if (p_sb->sb_attn) dma_free_coherent(&cdev->pdev->dev, SB_ATTN_ALIGNED_SIZE(p_hwfn), p_sb->sb_attn, p_sb->sb_phys); kfree(p_sb); } } static void qed_int_sb_attn_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { struct qed_sb_attn_info *sb_info = p_hwfn->p_sb_attn; memset(sb_info->sb_attn, 0, sizeof(*sb_info->sb_attn)); sb_info->index = 0; sb_info->known_attn = 0; /* Configure Attention Status Block in IGU */ qed_wr(p_hwfn, p_ptt, IGU_REG_ATTN_MSG_ADDR_L, lower_32_bits(p_hwfn->p_sb_attn->sb_phys)); qed_wr(p_hwfn, p_ptt, IGU_REG_ATTN_MSG_ADDR_H, upper_32_bits(p_hwfn->p_sb_attn->sb_phys)); } static void qed_int_sb_attn_init(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, void *sb_virt_addr, dma_addr_t sb_phy_addr) { struct qed_sb_attn_info *sb_info = p_hwfn->p_sb_attn; sb_info->sb_attn = sb_virt_addr; sb_info->sb_phys = sb_phy_addr; /* Set the address of cleanup for the mcp attention */ sb_info->mfw_attn_addr = (p_hwfn->rel_pf_id << 3) + MISC_REG_AEU_GENERAL_ATTN_0; qed_int_sb_attn_setup(p_hwfn, p_ptt); } static int qed_int_sb_attn_alloc(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { struct qed_dev *cdev = p_hwfn->cdev; struct qed_sb_attn_info *p_sb; void *p_virt; dma_addr_t p_phys = 0; /* SB struct */ p_sb = kmalloc(sizeof(*p_sb), GFP_ATOMIC); if (!p_sb) { DP_NOTICE(cdev, "Failed to allocate `struct qed_sb_attn_info'\n"); return -ENOMEM; } /* SB ring */ p_virt = dma_alloc_coherent(&cdev->pdev->dev, SB_ATTN_ALIGNED_SIZE(p_hwfn), &p_phys, GFP_KERNEL); if (!p_virt) { DP_NOTICE(cdev, "Failed to allocate status block (attentions)\n"); kfree(p_sb); return -ENOMEM; } /* Attention setup */ p_hwfn->p_sb_attn = p_sb; qed_int_sb_attn_init(p_hwfn, p_ptt, p_virt, p_phys); return 0; } /* coalescing timeout = timeset << (timer_res + 1) */ #define QED_CAU_DEF_RX_USECS 24 #define QED_CAU_DEF_TX_USECS 48 void qed_init_cau_sb_entry(struct qed_hwfn *p_hwfn, struct cau_sb_entry *p_sb_entry, u8 pf_id, u16 vf_number, u8 vf_valid) { u32 cau_state; memset(p_sb_entry, 0, sizeof(*p_sb_entry)); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_PF_NUMBER, pf_id); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_VF_NUMBER, vf_number); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_VF_VALID, vf_valid); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_SB_TIMESET0, 0x7F); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_SB_TIMESET1, 0x7F); /* setting the time resultion to a fixed value ( = 1) */ SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_TIMER_RES0, QED_CAU_DEF_RX_TIMER_RES); SET_FIELD(p_sb_entry->params, CAU_SB_ENTRY_TIMER_RES1, QED_CAU_DEF_TX_TIMER_RES); cau_state = CAU_HC_DISABLE_STATE; if (p_hwfn->cdev->int_coalescing_mode == QED_COAL_MODE_ENABLE) { cau_state = CAU_HC_ENABLE_STATE; if (!p_hwfn->cdev->rx_coalesce_usecs) p_hwfn->cdev->rx_coalesce_usecs = QED_CAU_DEF_RX_USECS; if (!p_hwfn->cdev->tx_coalesce_usecs) p_hwfn->cdev->tx_coalesce_usecs = QED_CAU_DEF_TX_USECS; } SET_FIELD(p_sb_entry->data, CAU_SB_ENTRY_STATE0, cau_state); SET_FIELD(p_sb_entry->data, CAU_SB_ENTRY_STATE1, cau_state); } void qed_int_cau_conf_sb(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, dma_addr_t sb_phys, u16 igu_sb_id, u16 vf_number, u8 vf_valid) { struct cau_sb_entry sb_entry; u32 val; qed_init_cau_sb_entry(p_hwfn, &sb_entry, p_hwfn->rel_pf_id, vf_number, vf_valid); if (p_hwfn->hw_init_done) { val = CAU_REG_SB_ADDR_MEMORY + igu_sb_id * sizeof(u64); qed_wr(p_hwfn, p_ptt, val, lower_32_bits(sb_phys)); qed_wr(p_hwfn, p_ptt, val + sizeof(u32), upper_32_bits(sb_phys)); val = CAU_REG_SB_VAR_MEMORY + igu_sb_id * sizeof(u64); qed_wr(p_hwfn, p_ptt, val, sb_entry.data); qed_wr(p_hwfn, p_ptt, val + sizeof(u32), sb_entry.params); } else { /* Initialize Status Block Address */ STORE_RT_REG_AGG(p_hwfn, CAU_REG_SB_ADDR_MEMORY_RT_OFFSET + igu_sb_id * 2, sb_phys); STORE_RT_REG_AGG(p_hwfn, CAU_REG_SB_VAR_MEMORY_RT_OFFSET + igu_sb_id * 2, sb_entry); } /* Configure pi coalescing if set */ if (p_hwfn->cdev->int_coalescing_mode == QED_COAL_MODE_ENABLE) { u8 timeset = p_hwfn->cdev->rx_coalesce_usecs >> (QED_CAU_DEF_RX_TIMER_RES + 1); u8 num_tc = 1, i; qed_int_cau_conf_pi(p_hwfn, p_ptt, igu_sb_id, RX_PI, QED_COAL_RX_STATE_MACHINE, timeset); timeset = p_hwfn->cdev->tx_coalesce_usecs >> (QED_CAU_DEF_TX_TIMER_RES + 1); for (i = 0; i < num_tc; i++) { qed_int_cau_conf_pi(p_hwfn, p_ptt, igu_sb_id, TX_PI(i), QED_COAL_TX_STATE_MACHINE, timeset); } } } void qed_int_cau_conf_pi(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, u16 igu_sb_id, u32 pi_index, enum qed_coalescing_fsm coalescing_fsm, u8 timeset) { struct cau_pi_entry pi_entry; u32 sb_offset; u32 pi_offset; sb_offset = igu_sb_id * PIS_PER_SB; memset(&pi_entry, 0, sizeof(struct cau_pi_entry)); SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_PI_TIMESET, timeset); if (coalescing_fsm == QED_COAL_RX_STATE_MACHINE) SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 0); else SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 1); pi_offset = sb_offset + pi_index; if (p_hwfn->hw_init_done) { qed_wr(p_hwfn, p_ptt, CAU_REG_PI_MEMORY + pi_offset * sizeof(u32), *((u32 *)&(pi_entry))); } else { STORE_RT_REG(p_hwfn, CAU_REG_PI_MEMORY_RT_OFFSET + pi_offset, *((u32 *)&(pi_entry))); } } void qed_int_sb_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, struct qed_sb_info *sb_info) { /* zero status block and ack counter */ sb_info->sb_ack = 0; memset(sb_info->sb_virt, 0, sizeof(*sb_info->sb_virt)); qed_int_cau_conf_sb(p_hwfn, p_ptt, sb_info->sb_phys, sb_info->igu_sb_id, 0, 0); } /** * @brief qed_get_igu_sb_id - given a sw sb_id return the * igu_sb_id * * @param p_hwfn * @param sb_id * * @return u16 */ static u16 qed_get_igu_sb_id(struct qed_hwfn *p_hwfn, u16 sb_id) { u16 igu_sb_id; /* Assuming continuous set of IGU SBs dedicated for given PF */ if (sb_id == QED_SP_SB_ID) igu_sb_id = p_hwfn->hw_info.p_igu_info->igu_dsb_id; else igu_sb_id = sb_id + p_hwfn->hw_info.p_igu_info->igu_base_sb; DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "SB [%s] index is 0x%04x\n", (sb_id == QED_SP_SB_ID) ? "DSB" : "non-DSB", igu_sb_id); return igu_sb_id; } int qed_int_sb_init(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, struct qed_sb_info *sb_info, void *sb_virt_addr, dma_addr_t sb_phy_addr, u16 sb_id) { sb_info->sb_virt = sb_virt_addr; sb_info->sb_phys = sb_phy_addr; sb_info->igu_sb_id = qed_get_igu_sb_id(p_hwfn, sb_id); if (sb_id != QED_SP_SB_ID) { p_hwfn->sbs_info[sb_id] = sb_info; p_hwfn->num_sbs++; } sb_info->cdev = p_hwfn->cdev; /* The igu address will hold the absolute address that needs to be * written to for a specific status block */ sb_info->igu_addr = (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_IGU_CMD + (sb_info->igu_sb_id << 3); sb_info->flags |= QED_SB_INFO_INIT; qed_int_sb_setup(p_hwfn, p_ptt, sb_info); return 0; } int qed_int_sb_release(struct qed_hwfn *p_hwfn, struct qed_sb_info *sb_info, u16 sb_id) { if (sb_id == QED_SP_SB_ID) { DP_ERR(p_hwfn, "Do Not free sp sb using this function"); return -EINVAL; } /* zero status block and ack counter */ sb_info->sb_ack = 0; memset(sb_info->sb_virt, 0, sizeof(*sb_info->sb_virt)); p_hwfn->sbs_info[sb_id] = NULL; p_hwfn->num_sbs--; return 0; } static void qed_int_sp_sb_free(struct qed_hwfn *p_hwfn) { struct qed_sb_sp_info *p_sb = p_hwfn->p_sp_sb; if (p_sb) { if (p_sb->sb_info.sb_virt) dma_free_coherent(&p_hwfn->cdev->pdev->dev, SB_ALIGNED_SIZE(p_hwfn), p_sb->sb_info.sb_virt, p_sb->sb_info.sb_phys); kfree(p_sb); } } static int qed_int_sp_sb_alloc(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { struct qed_sb_sp_info *p_sb; dma_addr_t p_phys = 0; void *p_virt; /* SB struct */ p_sb = kmalloc(sizeof(*p_sb), GFP_ATOMIC); if (!p_sb) { DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_sb_info'\n"); return -ENOMEM; } /* SB ring */ p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, SB_ALIGNED_SIZE(p_hwfn), &p_phys, GFP_KERNEL); if (!p_virt) { DP_NOTICE(p_hwfn, "Failed to allocate status block\n"); kfree(p_sb); return -ENOMEM; } /* Status Block setup */ p_hwfn->p_sp_sb = p_sb; qed_int_sb_init(p_hwfn, p_ptt, &p_sb->sb_info, p_virt, p_phys, QED_SP_SB_ID); memset(p_sb->pi_info_arr, 0, sizeof(p_sb->pi_info_arr)); return 0; } static void qed_int_sp_sb_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { if (!p_hwfn) return; if (p_hwfn->p_sp_sb) qed_int_sb_setup(p_hwfn, p_ptt, &p_hwfn->p_sp_sb->sb_info); else DP_NOTICE(p_hwfn->cdev, "Failed to setup Slow path status block - NULL pointer\n"); if (p_hwfn->p_sb_attn) qed_int_sb_attn_setup(p_hwfn, p_ptt); else DP_NOTICE(p_hwfn->cdev, "Failed to setup attentions status block - NULL pointer\n"); } int qed_int_register_cb(struct qed_hwfn *p_hwfn, qed_int_comp_cb_t comp_cb, void *cookie, u8 *sb_idx, __le16 **p_fw_cons) { struct qed_sb_sp_info *p_sp_sb = p_hwfn->p_sp_sb; int qed_status = -ENOMEM; u8 pi; /* Look for a free index */ for (pi = 0; pi < ARRAY_SIZE(p_sp_sb->pi_info_arr); pi++) { if (!p_sp_sb->pi_info_arr[pi].comp_cb) { p_sp_sb->pi_info_arr[pi].comp_cb = comp_cb; p_sp_sb->pi_info_arr[pi].cookie = cookie; *sb_idx = pi; *p_fw_cons = &p_sp_sb->sb_info.sb_virt->pi_array[pi]; qed_status = 0; break; } } return qed_status; } int qed_int_unregister_cb(struct qed_hwfn *p_hwfn, u8 pi) { struct qed_sb_sp_info *p_sp_sb = p_hwfn->p_sp_sb; int qed_status = -ENOMEM; if (p_sp_sb->pi_info_arr[pi].comp_cb) { p_sp_sb->pi_info_arr[pi].comp_cb = NULL; p_sp_sb->pi_info_arr[pi].cookie = NULL; qed_status = 0; } return qed_status; } u16 qed_int_get_sp_sb_id(struct qed_hwfn *p_hwfn) { return p_hwfn->p_sp_sb->sb_info.igu_sb_id; } void qed_int_igu_enable_int(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, enum qed_int_mode int_mode) { u32 igu_pf_conf = IGU_PF_CONF_FUNC_EN | IGU_PF_CONF_ATTN_BIT_EN; p_hwfn->cdev->int_mode = int_mode; switch (p_hwfn->cdev->int_mode) { case QED_INT_MODE_INTA: igu_pf_conf |= IGU_PF_CONF_INT_LINE_EN; igu_pf_conf |= IGU_PF_CONF_SINGLE_ISR_EN; break; case QED_INT_MODE_MSI: igu_pf_conf |= IGU_PF_CONF_MSI_MSIX_EN; igu_pf_conf |= IGU_PF_CONF_SINGLE_ISR_EN; break; case QED_INT_MODE_MSIX: igu_pf_conf |= IGU_PF_CONF_MSI_MSIX_EN; break; case QED_INT_MODE_POLL: break; } qed_wr(p_hwfn, p_ptt, IGU_REG_PF_CONFIGURATION, igu_pf_conf); } int qed_int_igu_enable(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, enum qed_int_mode int_mode) { int rc, i; /* Mask non-link attentions */ for (i = 0; i < 9; i++) qed_wr(p_hwfn, p_ptt, MISC_REG_AEU_ENABLE1_IGU_OUT_0 + (i << 2), 0); /* Configure AEU signal change to produce attentions for link */ qed_wr(p_hwfn, p_ptt, IGU_REG_LEADING_EDGE_LATCH, 0xfff); qed_wr(p_hwfn, p_ptt, IGU_REG_TRAILING_EDGE_LATCH, 0xfff); /* Flush the writes to IGU */ mmiowb(); /* Unmask AEU signals toward IGU */ qed_wr(p_hwfn, p_ptt, MISC_REG_AEU_MASK_ATTN_IGU, 0xff); if ((int_mode != QED_INT_MODE_INTA) || IS_LEAD_HWFN(p_hwfn)) { rc = qed_slowpath_irq_req(p_hwfn); if (rc != 0) { DP_NOTICE(p_hwfn, "Slowpath IRQ request failed\n"); return -EINVAL; } p_hwfn->b_int_requested = true; } /* Enable interrupt Generation */ qed_int_igu_enable_int(p_hwfn, p_ptt, int_mode); p_hwfn->b_int_enabled = 1; return rc; } void qed_int_igu_disable_int(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { p_hwfn->b_int_enabled = 0; qed_wr(p_hwfn, p_ptt, IGU_REG_PF_CONFIGURATION, 0); } #define IGU_CLEANUP_SLEEP_LENGTH (1000) void qed_int_igu_cleanup_sb(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, u32 sb_id, bool cleanup_set, u16 opaque_fid ) { u32 pxp_addr = IGU_CMD_INT_ACK_BASE + sb_id; u32 sleep_cnt = IGU_CLEANUP_SLEEP_LENGTH; u32 data = 0; u32 cmd_ctrl = 0; u32 val = 0; u32 sb_bit = 0; u32 sb_bit_addr = 0; /* Set the data field */ SET_FIELD(data, IGU_CLEANUP_CLEANUP_SET, cleanup_set ? 1 : 0); SET_FIELD(data, IGU_CLEANUP_CLEANUP_TYPE, 0); SET_FIELD(data, IGU_CLEANUP_COMMAND_TYPE, IGU_COMMAND_TYPE_SET); /* Set the control register */ SET_FIELD(cmd_ctrl, IGU_CTRL_REG_PXP_ADDR, pxp_addr); SET_FIELD(cmd_ctrl, IGU_CTRL_REG_FID, opaque_fid); SET_FIELD(cmd_ctrl, IGU_CTRL_REG_TYPE, IGU_CTRL_CMD_TYPE_WR); qed_wr(p_hwfn, p_ptt, IGU_REG_COMMAND_REG_32LSB_DATA, data); barrier(); qed_wr(p_hwfn, p_ptt, IGU_REG_COMMAND_REG_CTRL, cmd_ctrl); /* Flush the write to IGU */ mmiowb(); /* calculate where to read the status bit from */ sb_bit = 1 << (sb_id % 32); sb_bit_addr = sb_id / 32 * sizeof(u32); sb_bit_addr += IGU_REG_CLEANUP_STATUS_0; /* Now wait for the command to complete */ do { val = qed_rd(p_hwfn, p_ptt, sb_bit_addr); if ((val & sb_bit) == (cleanup_set ? sb_bit : 0)) break; usleep_range(5000, 10000); } while (--sleep_cnt); if (!sleep_cnt) DP_NOTICE(p_hwfn, "Timeout waiting for clear status 0x%08x [for sb %d]\n", val, sb_id); } void qed_int_igu_init_pure_rt_single(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, u32 sb_id, u16 opaque, bool b_set) { int pi; /* Set */ if (b_set) qed_int_igu_cleanup_sb(p_hwfn, p_ptt, sb_id, 1, opaque); /* Clear */ qed_int_igu_cleanup_sb(p_hwfn, p_ptt, sb_id, 0, opaque); /* Clear the CAU for the SB */ for (pi = 0; pi < 12; pi++) qed_wr(p_hwfn, p_ptt, CAU_REG_PI_MEMORY + (sb_id * 12 + pi) * 4, 0); } void qed_int_igu_init_pure_rt(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, bool b_set, bool b_slowpath) { u32 igu_base_sb = p_hwfn->hw_info.p_igu_info->igu_base_sb; u32 igu_sb_cnt = p_hwfn->hw_info.p_igu_info->igu_sb_cnt; u32 sb_id = 0; u32 val = 0; val = qed_rd(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION); val |= IGU_REG_BLOCK_CONFIGURATION_VF_CLEANUP_EN; val &= ~IGU_REG_BLOCK_CONFIGURATION_PXP_TPH_INTERFACE_EN; qed_wr(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION, val); DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "IGU cleaning SBs [%d,...,%d]\n", igu_base_sb, igu_base_sb + igu_sb_cnt - 1); for (sb_id = igu_base_sb; sb_id < igu_base_sb + igu_sb_cnt; sb_id++) qed_int_igu_init_pure_rt_single(p_hwfn, p_ptt, sb_id, p_hwfn->hw_info.opaque_fid, b_set); if (b_slowpath) { sb_id = p_hwfn->hw_info.p_igu_info->igu_dsb_id; DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "IGU cleaning slowpath SB [%d]\n", sb_id); qed_int_igu_init_pure_rt_single(p_hwfn, p_ptt, sb_id, p_hwfn->hw_info.opaque_fid, b_set); } } int qed_int_igu_read_cam(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { struct qed_igu_info *p_igu_info; struct qed_igu_block *blk; u32 val; u16 sb_id; u16 prev_sb_id = 0xFF; p_hwfn->hw_info.p_igu_info = kzalloc(sizeof(*p_igu_info), GFP_ATOMIC); if (!p_hwfn->hw_info.p_igu_info) return -ENOMEM; p_igu_info = p_hwfn->hw_info.p_igu_info; /* Initialize base sb / sb cnt for PFs */ p_igu_info->igu_base_sb = 0xffff; p_igu_info->igu_sb_cnt = 0; p_igu_info->igu_dsb_id = 0xffff; p_igu_info->igu_base_sb_iov = 0xffff; for (sb_id = 0; sb_id < QED_MAPPING_MEMORY_SIZE(p_hwfn->cdev); sb_id++) { blk = &p_igu_info->igu_map.igu_blocks[sb_id]; val = qed_rd(p_hwfn, p_ptt, IGU_REG_MAPPING_MEMORY + sizeof(u32) * sb_id); /* stop scanning when hit first invalid PF entry */ if (!GET_FIELD(val, IGU_MAPPING_LINE_VALID) && GET_FIELD(val, IGU_MAPPING_LINE_PF_VALID)) break; blk->status = QED_IGU_STATUS_VALID; blk->function_id = GET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER); blk->is_pf = GET_FIELD(val, IGU_MAPPING_LINE_PF_VALID); blk->vector_number = GET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER); DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "IGU_BLOCK[sb_id]:%x:func_id = %d is_pf = %d vector_num = 0x%x\n", val, blk->function_id, blk->is_pf, blk->vector_number); if (blk->is_pf) { if (blk->function_id == p_hwfn->rel_pf_id) { blk->status |= QED_IGU_STATUS_PF; if (blk->vector_number == 0) { if (p_igu_info->igu_dsb_id == 0xffff) p_igu_info->igu_dsb_id = sb_id; } else { if (p_igu_info->igu_base_sb == 0xffff) { p_igu_info->igu_base_sb = sb_id; } else if (prev_sb_id != sb_id - 1) { DP_NOTICE(p_hwfn->cdev, "consecutive igu vectors for HWFN %x broken", p_hwfn->rel_pf_id); break; } prev_sb_id = sb_id; /* we don't count the default */ (p_igu_info->igu_sb_cnt)++; } } } } DP_VERBOSE(p_hwfn, NETIF_MSG_INTR, "IGU igu_base_sb=0x%x igu_sb_cnt=%d igu_dsb_id=0x%x\n", p_igu_info->igu_base_sb, p_igu_info->igu_sb_cnt, p_igu_info->igu_dsb_id); if (p_igu_info->igu_base_sb == 0xffff || p_igu_info->igu_dsb_id == 0xffff || p_igu_info->igu_sb_cnt == 0) { DP_NOTICE(p_hwfn, "IGU CAM returned invalid values igu_base_sb=0x%x igu_sb_cnt=%d igu_dsb_id=0x%x\n", p_igu_info->igu_base_sb, p_igu_info->igu_sb_cnt, p_igu_info->igu_dsb_id); return -EINVAL; } return 0; } /** * @brief Initialize igu runtime registers * * @param p_hwfn */ void qed_int_igu_init_rt(struct qed_hwfn *p_hwfn) { u32 igu_pf_conf = 0; igu_pf_conf |= IGU_PF_CONF_FUNC_EN; STORE_RT_REG(p_hwfn, IGU_REG_PF_CONFIGURATION_RT_OFFSET, igu_pf_conf); } u64 qed_int_igu_read_sisr_reg(struct qed_hwfn *p_hwfn) { u64 intr_status = 0; u32 intr_status_lo = 0; u32 intr_status_hi = 0; u32 lsb_igu_cmd_addr = IGU_REG_SISR_MDPC_WMASK_LSB_UPPER - IGU_CMD_INT_ACK_BASE; u32 msb_igu_cmd_addr = IGU_REG_SISR_MDPC_WMASK_MSB_UPPER - IGU_CMD_INT_ACK_BASE; intr_status_lo = REG_RD(p_hwfn, GTT_BAR0_MAP_REG_IGU_CMD + lsb_igu_cmd_addr * 8); intr_status_hi = REG_RD(p_hwfn, GTT_BAR0_MAP_REG_IGU_CMD + msb_igu_cmd_addr * 8); intr_status = ((u64)intr_status_hi << 32) + (u64)intr_status_lo; return intr_status; } static void qed_int_sp_dpc_setup(struct qed_hwfn *p_hwfn) { tasklet_init(p_hwfn->sp_dpc, qed_int_sp_dpc, (unsigned long)p_hwfn); p_hwfn->b_sp_dpc_enabled = true; } static int qed_int_sp_dpc_alloc(struct qed_hwfn *p_hwfn) { p_hwfn->sp_dpc = kmalloc(sizeof(*p_hwfn->sp_dpc), GFP_ATOMIC); if (!p_hwfn->sp_dpc) return -ENOMEM; return 0; } static void qed_int_sp_dpc_free(struct qed_hwfn *p_hwfn) { kfree(p_hwfn->sp_dpc); } int qed_int_alloc(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { int rc = 0; rc = qed_int_sp_dpc_alloc(p_hwfn); if (rc) { DP_ERR(p_hwfn->cdev, "Failed to allocate sp dpc mem\n"); return rc; } rc = qed_int_sp_sb_alloc(p_hwfn, p_ptt); if (rc) { DP_ERR(p_hwfn->cdev, "Failed to allocate sp sb mem\n"); return rc; } rc = qed_int_sb_attn_alloc(p_hwfn, p_ptt); if (rc) { DP_ERR(p_hwfn->cdev, "Failed to allocate sb attn mem\n"); return rc; } return rc; } void qed_int_free(struct qed_hwfn *p_hwfn) { qed_int_sp_sb_free(p_hwfn); qed_int_sb_attn_free(p_hwfn); qed_int_sp_dpc_free(p_hwfn); } void qed_int_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { qed_int_sp_sb_setup(p_hwfn, p_ptt); qed_int_sp_dpc_setup(p_hwfn); } int qed_int_get_num_sbs(struct qed_hwfn *p_hwfn, int *p_iov_blks) { struct qed_igu_info *info = p_hwfn->hw_info.p_igu_info; if (!info) return 0; if (p_iov_blks) *p_iov_blks = info->free_blks; return info->igu_sb_cnt; } void qed_int_disable_post_isr_release(struct qed_dev *cdev) { int i; for_each_hwfn(cdev, i) cdev->hwfns[i].b_int_requested = false; }