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
is_sdp_pfvf(u16 pcifunc)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
is_sdp_pf(u16 pcifunc)37 bool is_sdp_pf(u16 pcifunc)
38 {
39 return (is_sdp_pfvf(pcifunc) &&
40 !(pcifunc & RVU_PFVF_FUNC_MASK));
41 }
42
is_sdp_vf(u16 pcifunc)43 bool is_sdp_vf(u16 pcifunc)
44 {
45 return (is_sdp_pfvf(pcifunc) &&
46 !!(pcifunc & RVU_PFVF_FUNC_MASK));
47 }
48
rvu_sdp_init(struct rvu * rvu)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 pci_dev_put(pdev);
67 return -ENOMEM;
68 }
69
70 dev_info(rvu->dev, "SDP PF number:%d\n", sdp_pf_num[i]);
71
72 i++;
73 }
74
75 pci_dev_put(pdev);
76
77 return 0;
78 }
79
80 int
rvu_mbox_handler_set_sdp_chan_info(struct rvu * rvu,struct sdp_chan_info_msg * req,struct msg_rsp * rsp)81 rvu_mbox_handler_set_sdp_chan_info(struct rvu *rvu,
82 struct sdp_chan_info_msg *req,
83 struct msg_rsp *rsp)
84 {
85 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
86
87 memcpy(pfvf->sdp_info, &req->info, sizeof(struct sdp_node_info));
88 dev_info(rvu->dev, "AF: SDP%d max_vfs %d num_pf_rings %d pf_srn %d\n",
89 req->info.node_id, req->info.max_vfs, req->info.num_pf_rings,
90 req->info.pf_srn);
91 return 0;
92 }
93
94 int
rvu_mbox_handler_get_sdp_chan_info(struct rvu * rvu,struct msg_req * req,struct sdp_get_chan_info_msg * rsp)95 rvu_mbox_handler_get_sdp_chan_info(struct rvu *rvu, struct msg_req *req,
96 struct sdp_get_chan_info_msg *rsp)
97 {
98 struct rvu_hwinfo *hw = rvu->hw;
99 int blkaddr;
100
101 if (!hw->cap.programmable_chans) {
102 rsp->chan_base = NIX_CHAN_SDP_CH_START;
103 rsp->num_chan = NIX_CHAN_SDP_NUM_CHANS;
104 } else {
105 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, 0);
106 rsp->chan_base = hw->sdp_chan_base;
107 rsp->num_chan = rvu_read64(rvu, blkaddr, NIX_AF_CONST1) & 0xFFFUL;
108 }
109
110 return 0;
111 }
112