1 // SPDX-License-Identifier: GPL-2.0 2 /* Marvell RVU Admin Function driver 3 * 4 * Copyright (C) 2021 Marvell. 5 * 6 */ 7 8 #include <linux/pci.h> 9 #include "rvu.h" 10 11 /* SDP PF device id */ 12 #define PCI_DEVID_OTX2_SDP_PF 0xA0F6 13 14 /* Maximum SDP blocks in a chip */ 15 #define MAX_SDP 2 16 17 /* SDP PF number */ 18 static int sdp_pf_num[MAX_SDP] = {-1, -1}; 19 20 bool is_sdp_pfvf(u16 pcifunc) 21 { 22 u16 pf = rvu_get_pf(pcifunc); 23 u32 found = 0, i = 0; 24 25 while (i < MAX_SDP) { 26 if (pf == sdp_pf_num[i]) 27 found = 1; 28 i++; 29 } 30 31 if (!found) 32 return false; 33 34 return true; 35 } 36 37 bool is_sdp_pf(u16 pcifunc) 38 { 39 return (is_sdp_pfvf(pcifunc) && 40 !(pcifunc & RVU_PFVF_FUNC_MASK)); 41 } 42 43 bool is_sdp_vf(u16 pcifunc) 44 { 45 return (is_sdp_pfvf(pcifunc) && 46 !!(pcifunc & RVU_PFVF_FUNC_MASK)); 47 } 48 49 int rvu_sdp_init(struct rvu *rvu) 50 { 51 struct pci_dev *pdev = NULL; 52 struct rvu_pfvf *pfvf; 53 u32 i = 0; 54 55 while ((i < MAX_SDP) && (pdev = pci_get_device(PCI_VENDOR_ID_CAVIUM, 56 PCI_DEVID_OTX2_SDP_PF, 57 pdev)) != NULL) { 58 /* The RVU PF number is one less than bus number */ 59 sdp_pf_num[i] = pdev->bus->number - 1; 60 pfvf = &rvu->pf[sdp_pf_num[i]]; 61 62 pfvf->sdp_info = devm_kzalloc(rvu->dev, 63 sizeof(struct sdp_node_info), 64 GFP_KERNEL); 65 if (!pfvf->sdp_info) 66 return -ENOMEM; 67 68 dev_info(rvu->dev, "SDP PF number:%d\n", sdp_pf_num[i]); 69 70 put_device(&pdev->dev); 71 i++; 72 } 73 74 return 0; 75 } 76 77 int 78 rvu_mbox_handler_set_sdp_chan_info(struct rvu *rvu, 79 struct sdp_chan_info_msg *req, 80 struct msg_rsp *rsp) 81 { 82 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc); 83 84 memcpy(pfvf->sdp_info, &req->info, sizeof(struct sdp_node_info)); 85 dev_info(rvu->dev, "AF: SDP%d max_vfs %d num_pf_rings %d pf_srn %d\n", 86 req->info.node_id, req->info.max_vfs, req->info.num_pf_rings, 87 req->info.pf_srn); 88 return 0; 89 } 90 91 int 92 rvu_mbox_handler_get_sdp_chan_info(struct rvu *rvu, struct msg_req *req, 93 struct sdp_get_chan_info_msg *rsp) 94 { 95 struct rvu_hwinfo *hw = rvu->hw; 96 int blkaddr; 97 98 if (!hw->cap.programmable_chans) { 99 rsp->chan_base = NIX_CHAN_SDP_CH_START; 100 rsp->num_chan = NIX_CHAN_SDP_NUM_CHANS; 101 } else { 102 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0); 103 rsp->chan_base = hw->sdp_chan_base; 104 rsp->num_chan = rvu_read64(rvu, blkaddr, NIX_AF_CONST1) & 0xFFFUL; 105 } 106 107 return 0; 108 } 109