diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c new file mode 100644 index 000000000000..f65af65efa66 --- /dev/null +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c @@ -0,0 +1,544 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Marvell OcteonTx2 RVU Admin Function driver + * + * Copyright (C) 2018 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/pci.h> +#include "rvu_struct.h" +#include "rvu_reg.h" +#include "mbox.h" +#include "rvu.h" + +/* CPT PF device id */ +#define PCI_DEVID_OTX2_CPT_PF 0xA0FD + +/* Maximum supported microcode groups */ +#define CPT_MAX_ENGINE_GROUPS 8 + +/* Invalid engine group */ +#define INVALID_ENGINE_GRP 0xFF + +/* Number of engine group for symmetric crypto */ +static int crypto_eng_grp = INVALID_ENGINE_GRP; + +/* CPT PF number */ +static int cpt_pf_num = -1; + +/* Fault interrupts names */ +static const char *cpt_flt_irq_name[2] = { "CPTAF FLT0", "CPTAF FLT1" }; + +static irqreturn_t rvu_cpt_af_flr_intr_handler(int irq, void *ptr) +{ + struct rvu *rvu = (struct rvu *) ptr; + u64 reg0, reg1; + int blkaddr; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return IRQ_NONE; + + reg0 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(0)); + reg1 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(1)); + dev_err(rvu->dev, "Received CPTAF FLT irq : 0x%llx, 0x%llx", + reg0, reg1); + + rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(0), reg0); + rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT(1), reg1); + return IRQ_HANDLED; +} + +static irqreturn_t rvu_cpt_af_rvu_intr_handler(int irq, void *ptr) +{ + struct rvu *rvu = (struct rvu *) ptr; + int blkaddr; + u64 reg; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return IRQ_NONE; + + reg = rvu_read64(rvu, blkaddr, CPT_AF_RVU_INT); + dev_err(rvu->dev, "Received CPTAF RVU irq : 0x%llx", reg); + + rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT, reg); + return IRQ_HANDLED; +} + +static irqreturn_t rvu_cpt_af_ras_intr_handler(int irq, void *ptr) +{ + struct rvu *rvu = (struct rvu *) ptr; + int blkaddr; + u64 reg; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return IRQ_NONE; + + reg = rvu_read64(rvu, blkaddr, CPT_AF_RAS_INT); + dev_err(rvu->dev, "Received CPTAF RAS irq : 0x%llx", reg); + + rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT, reg); + return IRQ_HANDLED; +} + +static int rvu_cpt_do_register_interrupt(struct rvu *rvu, int irq_offs, + irq_handler_t handler, + const char *name) +{ + int ret = 0; + + ret = request_irq(pci_irq_vector(rvu->pdev, irq_offs), handler, 0, + name, rvu); + if (ret) { + dev_err(rvu->dev, "RVUAF: %s irq registration failed", name); + goto err; + } + + WARN_ON(rvu->irq_allocated[irq_offs]); + rvu->irq_allocated[irq_offs] = true; +err: + return ret; +} + +void rvu_cpt_unregister_interrupts(struct rvu *rvu) +{ + int blkaddr, i, offs; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return; + + offs = rvu_read64(rvu, blkaddr, CPT_PRIV_AF_INT_CFG) & 0x7FF; + if (!offs) { + dev_warn(rvu->dev, + "Failed to get CPT_AF_INT vector offsets\n"); + return; + } + + /* Disable all CPT AF interrupts */ + for (i = 0; i < 2; i++) + rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1C(i), 0x1); + rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1C, 0x1); + rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1C, 0x1); + + for (i = 0; i < CPT_AF_INT_VEC_CNT; i++) + if (rvu->irq_allocated[offs + i]) { + free_irq(pci_irq_vector(rvu->pdev, offs + i), rvu); + rvu->irq_allocated[offs + i] = false; + } +} + +static bool is_cpt_pf(u16 pcifunc) +{ + if (rvu_get_pf(pcifunc) != cpt_pf_num) + return false; + if (pcifunc & RVU_PFVF_FUNC_MASK) + return false; + + return true; +} + +static bool is_cpt_vf(u16 pcifunc) +{ + if (rvu_get_pf(pcifunc) != cpt_pf_num) + return false; + if (!(pcifunc & RVU_PFVF_FUNC_MASK)) + return false; + + return true; +} + +int rvu_cpt_init(struct rvu *rvu) +{ + struct pci_dev *pdev; + int i; + + for (i = 0; i < rvu->hw->total_pfs; i++) { + pdev = pci_get_domain_bus_and_slot( + pci_domain_nr(rvu->pdev->bus), i + 1, 0); + if (!pdev) + continue; + + if (pdev->device == PCI_DEVID_OTX2_CPT_PF) { + cpt_pf_num = i; + put_device(&pdev->dev); + break; + } + + put_device(&pdev->dev); + } + + return 0; +} + +int rvu_cpt_register_interrupts(struct rvu *rvu) +{ + + int i, offs, blkaddr, ret = 0; + + if (!is_block_implemented(rvu->hw, BLKADDR_CPT0)) + return 0; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return blkaddr; + + offs = rvu_read64(rvu, blkaddr, CPT_PRIV_AF_INT_CFG) & 0x7FF; + if (!offs) { + dev_warn(rvu->dev, + "Failed to get CPT_AF_INT vector offsets\n"); + return 0; + } + + for (i = CPT_AF_INT_VEC_FLT0; i < CPT_AF_INT_VEC_RVU; i++) { + ret = rvu_cpt_do_register_interrupt(rvu, offs + i, + rvu_cpt_af_flr_intr_handler, + cpt_flt_irq_name[i]); + if (ret) + goto err; + rvu_write64(rvu, blkaddr, CPT_AF_FLTX_INT_ENA_W1S(i), 0x1); + } + + ret = rvu_cpt_do_register_interrupt(rvu, offs + CPT_AF_INT_VEC_RVU, + rvu_cpt_af_rvu_intr_handler, + "CPTAF RVU"); + if (ret) + goto err; + rvu_write64(rvu, blkaddr, CPT_AF_RVU_INT_ENA_W1S, 0x1); + + ret = rvu_cpt_do_register_interrupt(rvu, offs + CPT_AF_INT_VEC_RAS, + rvu_cpt_af_ras_intr_handler, + "CPTAF RAS"); + if (ret) + goto err; + rvu_write64(rvu, blkaddr, CPT_AF_RAS_INT_ENA_W1S, 0x1); + + return 0; +err: + rvu_cpt_unregister_interrupts(rvu); + return ret; +} + +int rvu_mbox_handler_cpt_lf_alloc(struct rvu *rvu, + struct cpt_lf_alloc_req_msg *req, + struct cpt_lf_alloc_rsp_msg *rsp) +{ + u16 pcifunc = req->hdr.pcifunc; + int num_lfs, slot, grp_mask; + struct rvu_block *block; + int cptlf, blkaddr; + u64 val; + + if (crypto_eng_grp == INVALID_ENGINE_GRP) + return CPT_AF_ERR_GRP_INVALID; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, pcifunc); + if (blkaddr < 0) + return blkaddr; + + block = &rvu->hw->block[blkaddr]; + num_lfs = rvu_get_rsrc_mapcount(rvu_get_pfvf(rvu, pcifunc), + block->type); + if (!num_lfs) + return CPT_AF_ERR_LF_INVALID; + + /* Check if requested 'CPTLF <=> NIXLF' mapping is valid */ + if (req->nix_pf_func) { + /* If default, use 'this' CPTLF's PFFUNC */ + if (req->nix_pf_func == RVU_DEFAULT_PF_FUNC) + req->nix_pf_func = pcifunc; + if (!is_pffunc_map_valid(rvu, req->nix_pf_func, BLKTYPE_NIX)) + return CPT_AF_ERR_NIX_PF_FUNC_INVALID; + } + + /* Check if requested 'CPTLF <=> SSOLF' mapping is valid */ + if (req->sso_pf_func) { + /* If default, use 'this' CPTLF's PFFUNC */ + if (req->sso_pf_func == RVU_DEFAULT_PF_FUNC) + req->sso_pf_func = pcifunc; + if (!is_pffunc_map_valid(rvu, req->sso_pf_func, BLKTYPE_SSO)) + return CPT_AF_ERR_SSO_PF_FUNC_INVALID; + } + + for (slot = 0; slot < num_lfs; slot++) { + cptlf = rvu_get_lf(rvu, block, pcifunc, slot); + if (cptlf < 0) + return CPT_AF_ERR_LF_INVALID; + + /* Set CPT LF group and priority */ + grp_mask = 1 << crypto_eng_grp; + val = (u64) grp_mask << 48 | 1; + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), val); + + /* Set CPT LF NIX_PF_FUNC and SSO_PF_FUNC */ + val = (u64) req->nix_pf_func << 48 | + (u64) req->sso_pf_func << 32; + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), val); + } + + /* Set SSO_PF_FUNC_OVRD for inline IPSec */ + rvu_write64(rvu, blkaddr, CPT_AF_ECO, 0x1); + + rsp->crypto_eng_grp = crypto_eng_grp; + return 0; +} + +int rvu_mbox_handler_cpt_lf_free(struct rvu *rvu, struct msg_req *req, + struct msg_rsp *rsp) +{ + u16 pcifunc = req->hdr.pcifunc; + struct rvu_block *block; + int cptlf, blkaddr; + int num_lfs, slot; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, pcifunc); + if (blkaddr < 0) + return blkaddr; + + block = &rvu->hw->block[blkaddr]; + num_lfs = rvu_get_rsrc_mapcount(rvu_get_pfvf(rvu, pcifunc), + block->type); + if (!num_lfs) + return CPT_AF_ERR_LF_INVALID; + + for (slot = 0; slot < num_lfs; slot++) { + cptlf = rvu_get_lf(rvu, block, pcifunc, slot); + if (cptlf < 0) + return CPT_AF_ERR_LF_INVALID; + + /* Reset CPT LF group and priority */ + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), 0x0); + /* Reset CPT LF NIX_PF_FUNC and SSO_PF_FUNC */ + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), 0x0); + } + + return 0; +} + +static int cpt_inline_ipsec_cfg_inbound(struct rvu *rvu, int blkaddr, u8 cptlf, + u8 enable, u16 sso_pf_func, + u16 nix_pf_func) +{ + u64 val; + + val = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf)); + if (enable && (val & BIT_ULL(16))) { + /* IPSec inline outbound path is already enabled for a given + * CPT LF, HRM states that inline inbound & outbound paths + * must not be enabled at the same time for a given CPT LF + */ + return CPT_AF_ERR_INLINE_IPSEC_INB_ENA; + } + /* Check if requested 'CPTLF <=> SSOLF' mapping is valid */ + if (sso_pf_func && !is_pffunc_map_valid(rvu, sso_pf_func, BLKTYPE_SSO)) + return CPT_AF_ERR_SSO_PF_FUNC_INVALID; + + /* Set PF_FUNC_INST */ + if (enable) + val |= BIT_ULL(9); + else + val &= ~BIT_ULL(9); + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), val); + + if (sso_pf_func) { + /* Set SSO_PF_FUNC */ + val = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf)); + val |= (u64)sso_pf_func << 32; + val |= (u64)nix_pf_func << 48; + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), val); + } + + return 0; +} + +static int cpt_inline_ipsec_cfg_outbound(struct rvu *rvu, int blkaddr, + u8 cptlf, u8 enable, + u16 nix_pf_func) +{ + u64 val; + + val = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf)); + if (enable && (val & BIT_ULL(9))) { + /* IPSec inline inbound path is already enabled for a given + * CPT LF, HRM states that inline inbound & outbound paths + * must not be enabled at the same time for a given CPT LF + */ + return CPT_AF_ERR_INLINE_IPSEC_OUT_ENA; + } + + /* Check if requested 'CPTLF <=> NIXLF' mapping is valid */ + if (nix_pf_func && !is_pffunc_map_valid(rvu, nix_pf_func, BLKTYPE_NIX)) + return CPT_AF_ERR_NIX_PF_FUNC_INVALID; + + /* Set PF_FUNC_INST */ + if (enable) + val |= BIT_ULL(16); + else + val &= ~BIT_ULL(16); + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), val); + + if (nix_pf_func) { + /* Set NIX_PF_FUNC */ + val = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf)); + val |= (u64)nix_pf_func << 48; + rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), val); + } + + return 0; +} + +int rvu_mbox_handler_cpt_inline_ipsec_cfg(struct rvu *rvu, + struct cpt_inline_ipsec_cfg_msg *req, + struct msg_rsp *rsp) +{ + u16 pcifunc = req->hdr.pcifunc; + struct rvu_block *block; + int cptlf, blkaddr; + int num_lfs, ret; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, pcifunc); + if (blkaddr < 0) + return CPT_AF_ERR_LF_INVALID; + + block = &rvu->hw->block[blkaddr]; + num_lfs = rvu_get_rsrc_mapcount(rvu_get_pfvf(rvu, pcifunc), + block->type); + if (req->slot >= num_lfs) + return CPT_AF_ERR_LF_INVALID; + + cptlf = rvu_get_lf(rvu, block, pcifunc, req->slot); + if (cptlf < 0) + return CPT_AF_ERR_LF_INVALID; + + switch (req->dir) { + case CPT_INLINE_INBOUND: + ret = cpt_inline_ipsec_cfg_inbound(rvu, blkaddr, cptlf, + req->enable, + req->sso_pf_func, + req->nix_pf_func); + break; + + case CPT_INLINE_OUTBOUND: + ret = cpt_inline_ipsec_cfg_outbound(rvu, blkaddr, cptlf, + req->enable, + req->nix_pf_func); + break; + + default: + + return CPT_AF_ERR_PARAM; + } + + return ret; +} + +int rvu_mbox_handler_cpt_set_crypto_grp(struct rvu *rvu, + struct cpt_set_crypto_grp_req_msg *req, + struct cpt_set_crypto_grp_req_msg *rsp) +{ + /* This message is accepted only if sent from CPT PF */ + if (!is_cpt_pf(req->hdr.pcifunc)) + return CPT_AF_ERR_ACCESS_DENIED; + + rsp->crypto_eng_grp = req->crypto_eng_grp; + + if (req->crypto_eng_grp != INVALID_ENGINE_GRP && + req->crypto_eng_grp >= CPT_MAX_ENGINE_GROUPS) + return CPT_AF_ERR_GRP_INVALID; + + crypto_eng_grp = req->crypto_eng_grp; + return 0; +} + +int rvu_mbox_handler_cpt_rd_wr_register(struct rvu *rvu, + struct cpt_rd_wr_reg_msg *req, + struct cpt_rd_wr_reg_msg *rsp) +{ + int blkaddr, num_lfs, offs, lf; + struct rvu_block *block; + + blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0); + if (blkaddr < 0) + return blkaddr; + + /* This message is accepted only if sent from CPT PF/VF */ + if (!is_cpt_pf(req->hdr.pcifunc) && + !is_cpt_vf(req->hdr.pcifunc)) + return CPT_AF_ERR_ACCESS_DENIED; + + rsp->reg_offset = req->reg_offset; + rsp->ret_val = req->ret_val; + rsp->is_write = req->is_write; + + if (req->hdr.pcifunc & RVU_PFVF_FUNC_MASK) { + /* Registers that can be accessed from VF */ + switch (req->reg_offset & 0xFF000) { + case CPT_AF_LFX_CTL(0): + offs = req->reg_offset & 0xFFF; + if (offs % 8) + goto error; + lf = offs >> 3; + break; + + default: + goto error; + } + + block = &rvu->hw->block[blkaddr]; + num_lfs = rvu_get_rsrc_mapcount( + rvu_get_pfvf(rvu, req->hdr.pcifunc), + block->type); + if (lf >= num_lfs) + /* Slot is not valid for that VF */ + goto error; + + /* Need to translate CPT LF slot to global number because + * VFs use local numbering from 0 to number of LFs - 1 + */ + lf = rvu_get_lf(rvu, &rvu->hw->block[blkaddr], + req->hdr.pcifunc, lf); + if (lf < 0) + goto error; + + req->reg_offset &= 0xFF000; + req->reg_offset += lf << 3; + rsp->reg_offset = req->reg_offset; + } else { + /* Registers that can be accessed from PF */ + switch (req->reg_offset & 0xFF000) { + case CPT_AF_PF_FUNC: + case CPT_AF_BLK_RST: + case CPT_AF_CONSTANTS1: + if (req->reg_offset & 0xFFF) + goto error; + break; + + case CPT_AF_EXEX_STS(0): + case CPT_AF_EXEX_CTL(0): + case CPT_AF_EXEX_CTL2(0): + case CPT_AF_EXEX_UCODE_BASE(0): + offs = req->reg_offset & 0xFFF; + if ((offs % 8) || (offs >> 3) > 127) + goto error; + break; + + default: + goto error; + } + } + + if (req->is_write) + rvu_write64(rvu, blkaddr, req->reg_offset, req->val); + else + rsp->val = rvu_read64(rvu, blkaddr, req->reg_offset); + + return 0; +error: + /* Access to register denied */ + return CPT_AF_ERR_ACCESS_DENIED; +} |