14863dea3SSunil Goutham /* 24863dea3SSunil Goutham * Copyright (C) 2015 Cavium, Inc. 34863dea3SSunil Goutham * 44863dea3SSunil Goutham * This program is free software; you can redistribute it and/or modify it 54863dea3SSunil Goutham * under the terms of version 2 of the GNU General Public License 64863dea3SSunil Goutham * as published by the Free Software Foundation. 74863dea3SSunil Goutham */ 84863dea3SSunil Goutham 946b903a0SDavid Daney #include <linux/acpi.h> 104863dea3SSunil Goutham #include <linux/module.h> 114863dea3SSunil Goutham #include <linux/interrupt.h> 124863dea3SSunil Goutham #include <linux/pci.h> 134863dea3SSunil Goutham #include <linux/netdevice.h> 144863dea3SSunil Goutham #include <linux/etherdevice.h> 154863dea3SSunil Goutham #include <linux/phy.h> 164863dea3SSunil Goutham #include <linux/of.h> 174863dea3SSunil Goutham #include <linux/of_mdio.h> 184863dea3SSunil Goutham #include <linux/of_net.h> 194863dea3SSunil Goutham 204863dea3SSunil Goutham #include "nic_reg.h" 214863dea3SSunil Goutham #include "nic.h" 224863dea3SSunil Goutham #include "thunder_bgx.h" 234863dea3SSunil Goutham 246b9e6547SVadim Lomovtsev #define DRV_NAME "thunder_bgx" 254863dea3SSunil Goutham #define DRV_VERSION "1.0" 264863dea3SSunil Goutham 27f8ad1f3fSVadim Lomovtsev /* RX_DMAC_CTL configuration */ 28f8ad1f3fSVadim Lomovtsev enum MCAST_MODE { 29f8ad1f3fSVadim Lomovtsev MCAST_MODE_REJECT = 0x0, 30f8ad1f3fSVadim Lomovtsev MCAST_MODE_ACCEPT = 0x1, 31f8ad1f3fSVadim Lomovtsev MCAST_MODE_CAM_FILTER = 0x2, 32f8ad1f3fSVadim Lomovtsev RSVD = 0x3 33f8ad1f3fSVadim Lomovtsev }; 34f8ad1f3fSVadim Lomovtsev 35f8ad1f3fSVadim Lomovtsev #define BCAST_ACCEPT BIT(0) 36f8ad1f3fSVadim Lomovtsev #define CAM_ACCEPT BIT(3) 37f8ad1f3fSVadim Lomovtsev #define MCAST_MODE_MASK 0x3 38f8ad1f3fSVadim Lomovtsev #define BGX_MCAST_MODE(x) (x << 1) 39f8ad1f3fSVadim Lomovtsev 403a34ecfdSVadim Lomovtsev struct dmac_map { 413a34ecfdSVadim Lomovtsev u64 vf_map; 423a34ecfdSVadim Lomovtsev u64 dmac; 433a34ecfdSVadim Lomovtsev }; 443a34ecfdSVadim Lomovtsev 454863dea3SSunil Goutham struct lmac { 464863dea3SSunil Goutham struct bgx *bgx; 473a34ecfdSVadim Lomovtsev /* actual number of DMACs configured */ 483a34ecfdSVadim Lomovtsev u8 dmacs_cfg; 493a34ecfdSVadim Lomovtsev /* overal number of possible DMACs could be configured per LMAC */ 503a34ecfdSVadim Lomovtsev u8 dmacs_count; 513a34ecfdSVadim Lomovtsev struct dmac_map *dmacs; /* DMAC:VFs tracking filter array */ 5246b903a0SDavid Daney u8 mac[ETH_ALEN]; 530bcb7d51SSunil Goutham u8 lmac_type; 540bcb7d51SSunil Goutham u8 lane_to_sds; 550bcb7d51SSunil Goutham bool use_training; 56075ad765SThanneeru Srinivasulu bool autoneg; 574863dea3SSunil Goutham bool link_up; 584863dea3SSunil Goutham int lmacid; /* ID within BGX */ 594863dea3SSunil Goutham int lmacid_bd; /* ID on board */ 604863dea3SSunil Goutham struct net_device netdev; 614863dea3SSunil Goutham struct phy_device *phydev; 624863dea3SSunil Goutham unsigned int last_duplex; 634863dea3SSunil Goutham unsigned int last_link; 644863dea3SSunil Goutham unsigned int last_speed; 654863dea3SSunil Goutham bool is_sgmii; 664863dea3SSunil Goutham struct delayed_work dwork; 674863dea3SSunil Goutham struct workqueue_struct *check_link; 680c886a1dSAleksey Makarov }; 694863dea3SSunil Goutham 704863dea3SSunil Goutham struct bgx { 714863dea3SSunil Goutham u8 bgx_id; 724863dea3SSunil Goutham struct lmac lmac[MAX_LMAC_PER_BGX]; 737aa48655SVadim Lomovtsev u8 lmac_count; 746465859aSSunil Goutham u8 max_lmac; 757aa48655SVadim Lomovtsev u8 acpi_lmac_idx; 764863dea3SSunil Goutham void __iomem *reg_base; 774863dea3SSunil Goutham struct pci_dev *pdev; 7809de3917SSunil Goutham bool is_dlm; 796465859aSSunil Goutham bool is_rgx; 800c886a1dSAleksey Makarov }; 814863dea3SSunil Goutham 82fd7ec062SAleksey Makarov static struct bgx *bgx_vnic[MAX_BGX_THUNDER]; 834863dea3SSunil Goutham static int lmac_count; /* Total no of LMACs in system */ 844863dea3SSunil Goutham 854863dea3SSunil Goutham static int bgx_xaui_check_link(struct lmac *lmac); 864863dea3SSunil Goutham 874863dea3SSunil Goutham /* Supported devices */ 884863dea3SSunil Goutham static const struct pci_device_id bgx_id_table[] = { 894863dea3SSunil Goutham { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_BGX) }, 906465859aSSunil Goutham { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_RGX) }, 914863dea3SSunil Goutham { 0, } /* end of table */ 924863dea3SSunil Goutham }; 934863dea3SSunil Goutham 944863dea3SSunil Goutham MODULE_AUTHOR("Cavium Inc"); 954863dea3SSunil Goutham MODULE_DESCRIPTION("Cavium Thunder BGX/MAC Driver"); 964863dea3SSunil Goutham MODULE_LICENSE("GPL v2"); 974863dea3SSunil Goutham MODULE_VERSION(DRV_VERSION); 984863dea3SSunil Goutham MODULE_DEVICE_TABLE(pci, bgx_id_table); 994863dea3SSunil Goutham 1004863dea3SSunil Goutham /* The Cavium ThunderX network controller can *only* be found in SoCs 1014863dea3SSunil Goutham * containing the ThunderX ARM64 CPU implementation. All accesses to the device 1024863dea3SSunil Goutham * registers on this platform are implicitly strongly ordered with respect 1034863dea3SSunil Goutham * to memory accesses. So writeq_relaxed() and readq_relaxed() are safe to use 1044863dea3SSunil Goutham * with no memory barriers in this driver. The readq()/writeq() functions add 1054863dea3SSunil Goutham * explicit ordering operation which in this case are redundant, and only 1064863dea3SSunil Goutham * add overhead. 1074863dea3SSunil Goutham */ 1084863dea3SSunil Goutham 1094863dea3SSunil Goutham /* Register read/write APIs */ 1104863dea3SSunil Goutham static u64 bgx_reg_read(struct bgx *bgx, u8 lmac, u64 offset) 1114863dea3SSunil Goutham { 1124863dea3SSunil Goutham void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 1134863dea3SSunil Goutham 1144863dea3SSunil Goutham return readq_relaxed(addr); 1154863dea3SSunil Goutham } 1164863dea3SSunil Goutham 1174863dea3SSunil Goutham static void bgx_reg_write(struct bgx *bgx, u8 lmac, u64 offset, u64 val) 1184863dea3SSunil Goutham { 1194863dea3SSunil Goutham void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 1204863dea3SSunil Goutham 1214863dea3SSunil Goutham writeq_relaxed(val, addr); 1224863dea3SSunil Goutham } 1234863dea3SSunil Goutham 1244863dea3SSunil Goutham static void bgx_reg_modify(struct bgx *bgx, u8 lmac, u64 offset, u64 val) 1254863dea3SSunil Goutham { 1264863dea3SSunil Goutham void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 1274863dea3SSunil Goutham 1284863dea3SSunil Goutham writeq_relaxed(val | readq_relaxed(addr), addr); 1294863dea3SSunil Goutham } 1304863dea3SSunil Goutham 1314863dea3SSunil Goutham static int bgx_poll_reg(struct bgx *bgx, u8 lmac, u64 reg, u64 mask, bool zero) 1324863dea3SSunil Goutham { 1334863dea3SSunil Goutham int timeout = 100; 1344863dea3SSunil Goutham u64 reg_val; 1354863dea3SSunil Goutham 1364863dea3SSunil Goutham while (timeout) { 1374863dea3SSunil Goutham reg_val = bgx_reg_read(bgx, lmac, reg); 1384863dea3SSunil Goutham if (zero && !(reg_val & mask)) 1394863dea3SSunil Goutham return 0; 1404863dea3SSunil Goutham if (!zero && (reg_val & mask)) 1414863dea3SSunil Goutham return 0; 1424863dea3SSunil Goutham usleep_range(1000, 2000); 1434863dea3SSunil Goutham timeout--; 1444863dea3SSunil Goutham } 1454863dea3SSunil Goutham return 1; 1464863dea3SSunil Goutham } 1474863dea3SSunil Goutham 14878aacb6fSSunil Goutham static int max_bgx_per_node; 14978aacb6fSSunil Goutham static void set_max_bgx_per_node(struct pci_dev *pdev) 15078aacb6fSSunil Goutham { 15178aacb6fSSunil Goutham u16 sdevid; 15278aacb6fSSunil Goutham 15378aacb6fSSunil Goutham if (max_bgx_per_node) 15478aacb6fSSunil Goutham return; 15578aacb6fSSunil Goutham 15678aacb6fSSunil Goutham pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &sdevid); 15778aacb6fSSunil Goutham switch (sdevid) { 15878aacb6fSSunil Goutham case PCI_SUBSYS_DEVID_81XX_BGX: 159b47a57a2SGeorge Cherian case PCI_SUBSYS_DEVID_81XX_RGX: 16078aacb6fSSunil Goutham max_bgx_per_node = MAX_BGX_PER_CN81XX; 16178aacb6fSSunil Goutham break; 16278aacb6fSSunil Goutham case PCI_SUBSYS_DEVID_83XX_BGX: 16378aacb6fSSunil Goutham max_bgx_per_node = MAX_BGX_PER_CN83XX; 16478aacb6fSSunil Goutham break; 16578aacb6fSSunil Goutham case PCI_SUBSYS_DEVID_88XX_BGX: 16678aacb6fSSunil Goutham default: 16778aacb6fSSunil Goutham max_bgx_per_node = MAX_BGX_PER_CN88XX; 16878aacb6fSSunil Goutham break; 16978aacb6fSSunil Goutham } 17078aacb6fSSunil Goutham } 17178aacb6fSSunil Goutham 17278aacb6fSSunil Goutham static struct bgx *get_bgx(int node, int bgx_idx) 17378aacb6fSSunil Goutham { 17478aacb6fSSunil Goutham int idx = (node * max_bgx_per_node) + bgx_idx; 17578aacb6fSSunil Goutham 17678aacb6fSSunil Goutham return bgx_vnic[idx]; 17778aacb6fSSunil Goutham } 17878aacb6fSSunil Goutham 1794863dea3SSunil Goutham /* Return number of BGX present in HW */ 1804863dea3SSunil Goutham unsigned bgx_get_map(int node) 1814863dea3SSunil Goutham { 1824863dea3SSunil Goutham int i; 1834863dea3SSunil Goutham unsigned map = 0; 1844863dea3SSunil Goutham 18578aacb6fSSunil Goutham for (i = 0; i < max_bgx_per_node; i++) { 18678aacb6fSSunil Goutham if (bgx_vnic[(node * max_bgx_per_node) + i]) 1874863dea3SSunil Goutham map |= (1 << i); 1884863dea3SSunil Goutham } 1894863dea3SSunil Goutham 1904863dea3SSunil Goutham return map; 1914863dea3SSunil Goutham } 1924863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_map); 1934863dea3SSunil Goutham 1944863dea3SSunil Goutham /* Return number of LMAC configured for this BGX */ 1954863dea3SSunil Goutham int bgx_get_lmac_count(int node, int bgx_idx) 1964863dea3SSunil Goutham { 1974863dea3SSunil Goutham struct bgx *bgx; 1984863dea3SSunil Goutham 19978aacb6fSSunil Goutham bgx = get_bgx(node, bgx_idx); 2004863dea3SSunil Goutham if (bgx) 2014863dea3SSunil Goutham return bgx->lmac_count; 2024863dea3SSunil Goutham 2034863dea3SSunil Goutham return 0; 2044863dea3SSunil Goutham } 2054863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_lmac_count); 2064863dea3SSunil Goutham 2074863dea3SSunil Goutham /* Returns the current link status of LMAC */ 2084863dea3SSunil Goutham void bgx_get_lmac_link_state(int node, int bgx_idx, int lmacid, void *status) 2094863dea3SSunil Goutham { 2104863dea3SSunil Goutham struct bgx_link_status *link = (struct bgx_link_status *)status; 2114863dea3SSunil Goutham struct bgx *bgx; 2124863dea3SSunil Goutham struct lmac *lmac; 2134863dea3SSunil Goutham 21478aacb6fSSunil Goutham bgx = get_bgx(node, bgx_idx); 2154863dea3SSunil Goutham if (!bgx) 2164863dea3SSunil Goutham return; 2174863dea3SSunil Goutham 2184863dea3SSunil Goutham lmac = &bgx->lmac[lmacid]; 2191cc70259SThanneeru Srinivasulu link->mac_type = lmac->lmac_type; 2204863dea3SSunil Goutham link->link_up = lmac->link_up; 2214863dea3SSunil Goutham link->duplex = lmac->last_duplex; 2224863dea3SSunil Goutham link->speed = lmac->last_speed; 2234863dea3SSunil Goutham } 2244863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_lmac_link_state); 2254863dea3SSunil Goutham 226e610cb32SAleksey Makarov const u8 *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid) 2274863dea3SSunil Goutham { 22878aacb6fSSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 2294863dea3SSunil Goutham 2304863dea3SSunil Goutham if (bgx) 2314863dea3SSunil Goutham return bgx->lmac[lmacid].mac; 2324863dea3SSunil Goutham 2334863dea3SSunil Goutham return NULL; 2344863dea3SSunil Goutham } 2354863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_lmac_mac); 2364863dea3SSunil Goutham 237e610cb32SAleksey Makarov void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const u8 *mac) 2384863dea3SSunil Goutham { 23978aacb6fSSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 2404863dea3SSunil Goutham 2414863dea3SSunil Goutham if (!bgx) 2424863dea3SSunil Goutham return; 2434863dea3SSunil Goutham 2444863dea3SSunil Goutham ether_addr_copy(bgx->lmac[lmacid].mac, mac); 2454863dea3SSunil Goutham } 2464863dea3SSunil Goutham EXPORT_SYMBOL(bgx_set_lmac_mac); 2474863dea3SSunil Goutham 2483a34ecfdSVadim Lomovtsev static void bgx_flush_dmac_cam_filter(struct bgx *bgx, int lmacid) 2493a34ecfdSVadim Lomovtsev { 2503a34ecfdSVadim Lomovtsev struct lmac *lmac = NULL; 2513a34ecfdSVadim Lomovtsev u8 idx = 0; 2523a34ecfdSVadim Lomovtsev 2533a34ecfdSVadim Lomovtsev lmac = &bgx->lmac[lmacid]; 2543a34ecfdSVadim Lomovtsev /* reset CAM filters */ 2553a34ecfdSVadim Lomovtsev for (idx = 0; idx < lmac->dmacs_count; idx++) 2563a34ecfdSVadim Lomovtsev bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + 2573a34ecfdSVadim Lomovtsev ((lmacid * lmac->dmacs_count) + idx) * 2583a34ecfdSVadim Lomovtsev sizeof(u64), 0); 2593a34ecfdSVadim Lomovtsev } 2603a34ecfdSVadim Lomovtsev 261ceb9ea21SVadim Lomovtsev static void bgx_lmac_remove_filters(struct lmac *lmac, u8 vf_id) 262ceb9ea21SVadim Lomovtsev { 263ceb9ea21SVadim Lomovtsev int i = 0; 264ceb9ea21SVadim Lomovtsev 265ceb9ea21SVadim Lomovtsev if (!lmac) 266ceb9ea21SVadim Lomovtsev return; 267ceb9ea21SVadim Lomovtsev 268ceb9ea21SVadim Lomovtsev /* We've got reset filters request from some of attached VF, while the 269ceb9ea21SVadim Lomovtsev * others might want to keep their configuration. So in this case lets 270ceb9ea21SVadim Lomovtsev * iterate over all of configured filters and decrease number of 271ceb9ea21SVadim Lomovtsev * referencies. if some addresses get zero refs remove them from list 272ceb9ea21SVadim Lomovtsev */ 273ceb9ea21SVadim Lomovtsev for (i = lmac->dmacs_cfg - 1; i >= 0; i--) { 274ceb9ea21SVadim Lomovtsev lmac->dmacs[i].vf_map &= ~BIT_ULL(vf_id); 275ceb9ea21SVadim Lomovtsev if (!lmac->dmacs[i].vf_map) { 276ceb9ea21SVadim Lomovtsev lmac->dmacs_cfg--; 277ceb9ea21SVadim Lomovtsev lmac->dmacs[i].dmac = 0; 278ceb9ea21SVadim Lomovtsev lmac->dmacs[i].vf_map = 0; 279ceb9ea21SVadim Lomovtsev } 280ceb9ea21SVadim Lomovtsev } 281ceb9ea21SVadim Lomovtsev } 282ceb9ea21SVadim Lomovtsev 283ceb9ea21SVadim Lomovtsev static int bgx_lmac_save_filter(struct lmac *lmac, u64 dmac, u8 vf_id) 284ceb9ea21SVadim Lomovtsev { 285ceb9ea21SVadim Lomovtsev u8 i = 0; 286ceb9ea21SVadim Lomovtsev 287ceb9ea21SVadim Lomovtsev if (!lmac) 288ceb9ea21SVadim Lomovtsev return -1; 289ceb9ea21SVadim Lomovtsev 290ceb9ea21SVadim Lomovtsev /* At the same time we could have several VFs 'attached' to some 291ceb9ea21SVadim Lomovtsev * particular LMAC, and each VF is represented as network interface 292ceb9ea21SVadim Lomovtsev * for kernel. So from user perspective it should be possible to 293ceb9ea21SVadim Lomovtsev * manipulate with its' (VF) receive modes. However from PF 294ceb9ea21SVadim Lomovtsev * driver perspective we need to keep track of filter configurations 295ceb9ea21SVadim Lomovtsev * for different VFs to prevent filter values dupes 296ceb9ea21SVadim Lomovtsev */ 297ceb9ea21SVadim Lomovtsev for (i = 0; i < lmac->dmacs_cfg; i++) { 298ceb9ea21SVadim Lomovtsev if (lmac->dmacs[i].dmac == dmac) { 299ceb9ea21SVadim Lomovtsev lmac->dmacs[i].vf_map |= BIT_ULL(vf_id); 300ceb9ea21SVadim Lomovtsev return -1; 301ceb9ea21SVadim Lomovtsev } 302ceb9ea21SVadim Lomovtsev } 303ceb9ea21SVadim Lomovtsev 304ceb9ea21SVadim Lomovtsev if (!(lmac->dmacs_cfg < lmac->dmacs_count)) 305ceb9ea21SVadim Lomovtsev return -1; 306ceb9ea21SVadim Lomovtsev 307ceb9ea21SVadim Lomovtsev /* keep it for further tracking */ 308ceb9ea21SVadim Lomovtsev lmac->dmacs[lmac->dmacs_cfg].dmac = dmac; 309ceb9ea21SVadim Lomovtsev lmac->dmacs[lmac->dmacs_cfg].vf_map = BIT_ULL(vf_id); 310ceb9ea21SVadim Lomovtsev lmac->dmacs_cfg++; 311ceb9ea21SVadim Lomovtsev return 0; 312ceb9ea21SVadim Lomovtsev } 313ceb9ea21SVadim Lomovtsev 314ceb9ea21SVadim Lomovtsev static int bgx_set_dmac_cam_filter_mac(struct bgx *bgx, int lmacid, 315ceb9ea21SVadim Lomovtsev u64 cam_dmac, u8 idx) 316ceb9ea21SVadim Lomovtsev { 317ceb9ea21SVadim Lomovtsev struct lmac *lmac = NULL; 318ceb9ea21SVadim Lomovtsev u64 cfg = 0; 319ceb9ea21SVadim Lomovtsev 320ceb9ea21SVadim Lomovtsev /* skip zero addresses as meaningless */ 321ceb9ea21SVadim Lomovtsev if (!cam_dmac || !bgx) 322ceb9ea21SVadim Lomovtsev return -1; 323ceb9ea21SVadim Lomovtsev 324ceb9ea21SVadim Lomovtsev lmac = &bgx->lmac[lmacid]; 325ceb9ea21SVadim Lomovtsev 326ceb9ea21SVadim Lomovtsev /* configure DCAM filtering for designated LMAC */ 327ceb9ea21SVadim Lomovtsev cfg = RX_DMACX_CAM_LMACID(lmacid & LMAC_ID_MASK) | 328ceb9ea21SVadim Lomovtsev RX_DMACX_CAM_EN | cam_dmac; 329ceb9ea21SVadim Lomovtsev bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + 330ceb9ea21SVadim Lomovtsev ((lmacid * lmac->dmacs_count) + idx) * sizeof(u64), cfg); 331ceb9ea21SVadim Lomovtsev return 0; 332ceb9ea21SVadim Lomovtsev } 333ceb9ea21SVadim Lomovtsev 334ceb9ea21SVadim Lomovtsev void bgx_set_dmac_cam_filter(int node, int bgx_idx, int lmacid, 335ceb9ea21SVadim Lomovtsev u64 cam_dmac, u8 vf_id) 336ceb9ea21SVadim Lomovtsev { 337ceb9ea21SVadim Lomovtsev struct bgx *bgx = get_bgx(node, bgx_idx); 338ceb9ea21SVadim Lomovtsev struct lmac *lmac = NULL; 339ceb9ea21SVadim Lomovtsev 340ceb9ea21SVadim Lomovtsev if (!bgx) 341ceb9ea21SVadim Lomovtsev return; 342ceb9ea21SVadim Lomovtsev 343ceb9ea21SVadim Lomovtsev lmac = &bgx->lmac[lmacid]; 344ceb9ea21SVadim Lomovtsev 345ceb9ea21SVadim Lomovtsev if (!cam_dmac) 346ceb9ea21SVadim Lomovtsev cam_dmac = ether_addr_to_u64(lmac->mac); 347ceb9ea21SVadim Lomovtsev 348ceb9ea21SVadim Lomovtsev /* since we might have several VFs attached to particular LMAC 349ceb9ea21SVadim Lomovtsev * and kernel could call mcast config for each of them with the 350ceb9ea21SVadim Lomovtsev * same MAC, check if requested MAC is already in filtering list and 351ceb9ea21SVadim Lomovtsev * updare/prepare list of MACs to be applied later to HW filters 352ceb9ea21SVadim Lomovtsev */ 353ceb9ea21SVadim Lomovtsev bgx_lmac_save_filter(lmac, cam_dmac, vf_id); 354ceb9ea21SVadim Lomovtsev } 355ceb9ea21SVadim Lomovtsev EXPORT_SYMBOL(bgx_set_dmac_cam_filter); 356ceb9ea21SVadim Lomovtsev 357ceb9ea21SVadim Lomovtsev void bgx_set_xcast_mode(int node, int bgx_idx, int lmacid, u8 mode) 358ceb9ea21SVadim Lomovtsev { 359ceb9ea21SVadim Lomovtsev struct bgx *bgx = get_bgx(node, bgx_idx); 360ceb9ea21SVadim Lomovtsev struct lmac *lmac = NULL; 361ceb9ea21SVadim Lomovtsev u64 cfg = 0; 362ceb9ea21SVadim Lomovtsev u8 i = 0; 363ceb9ea21SVadim Lomovtsev 364ceb9ea21SVadim Lomovtsev if (!bgx) 365ceb9ea21SVadim Lomovtsev return; 366ceb9ea21SVadim Lomovtsev 367ceb9ea21SVadim Lomovtsev lmac = &bgx->lmac[lmacid]; 368ceb9ea21SVadim Lomovtsev 369ceb9ea21SVadim Lomovtsev cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL); 370ceb9ea21SVadim Lomovtsev if (mode & BGX_XCAST_BCAST_ACCEPT) 371ceb9ea21SVadim Lomovtsev cfg |= BCAST_ACCEPT; 372ceb9ea21SVadim Lomovtsev else 373ceb9ea21SVadim Lomovtsev cfg &= ~BCAST_ACCEPT; 374ceb9ea21SVadim Lomovtsev 375ceb9ea21SVadim Lomovtsev /* disable all MCASTs and DMAC filtering */ 376ceb9ea21SVadim Lomovtsev cfg &= ~(CAM_ACCEPT | BGX_MCAST_MODE(MCAST_MODE_MASK)); 377ceb9ea21SVadim Lomovtsev 378ceb9ea21SVadim Lomovtsev /* check requested bits and set filtergin mode appropriately */ 379ceb9ea21SVadim Lomovtsev if (mode & (BGX_XCAST_MCAST_ACCEPT)) { 380ceb9ea21SVadim Lomovtsev cfg |= (BGX_MCAST_MODE(MCAST_MODE_ACCEPT)); 381ceb9ea21SVadim Lomovtsev } else if (mode & BGX_XCAST_MCAST_FILTER) { 382ceb9ea21SVadim Lomovtsev cfg |= (BGX_MCAST_MODE(MCAST_MODE_CAM_FILTER) | CAM_ACCEPT); 383ceb9ea21SVadim Lomovtsev for (i = 0; i < lmac->dmacs_cfg; i++) 384ceb9ea21SVadim Lomovtsev bgx_set_dmac_cam_filter_mac(bgx, lmacid, 385ceb9ea21SVadim Lomovtsev lmac->dmacs[i].dmac, i); 386ceb9ea21SVadim Lomovtsev } 387ceb9ea21SVadim Lomovtsev bgx_reg_write(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL, cfg); 388ceb9ea21SVadim Lomovtsev } 389ceb9ea21SVadim Lomovtsev EXPORT_SYMBOL(bgx_set_xcast_mode); 390ceb9ea21SVadim Lomovtsev 391ceb9ea21SVadim Lomovtsev void bgx_reset_xcast_mode(int node, int bgx_idx, int lmacid, u8 vf_id) 392ceb9ea21SVadim Lomovtsev { 393ceb9ea21SVadim Lomovtsev struct bgx *bgx = get_bgx(node, bgx_idx); 394ceb9ea21SVadim Lomovtsev 395ceb9ea21SVadim Lomovtsev if (!bgx) 396ceb9ea21SVadim Lomovtsev return; 397ceb9ea21SVadim Lomovtsev 398ceb9ea21SVadim Lomovtsev bgx_lmac_remove_filters(&bgx->lmac[lmacid], vf_id); 399ceb9ea21SVadim Lomovtsev bgx_flush_dmac_cam_filter(bgx, lmacid); 400ceb9ea21SVadim Lomovtsev bgx_set_xcast_mode(node, bgx_idx, lmacid, 401ceb9ea21SVadim Lomovtsev (BGX_XCAST_BCAST_ACCEPT | BGX_XCAST_MCAST_ACCEPT)); 402ceb9ea21SVadim Lomovtsev } 403ceb9ea21SVadim Lomovtsev EXPORT_SYMBOL(bgx_reset_xcast_mode); 404ceb9ea21SVadim Lomovtsev 405bc69fdfcSSunil Goutham void bgx_lmac_rx_tx_enable(int node, int bgx_idx, int lmacid, bool enable) 406bc69fdfcSSunil Goutham { 40778aacb6fSSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 4086465859aSSunil Goutham struct lmac *lmac; 409bc69fdfcSSunil Goutham u64 cfg; 410bc69fdfcSSunil Goutham 411bc69fdfcSSunil Goutham if (!bgx) 412bc69fdfcSSunil Goutham return; 4136465859aSSunil Goutham lmac = &bgx->lmac[lmacid]; 414bc69fdfcSSunil Goutham 415bc69fdfcSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 416bc69fdfcSSunil Goutham if (enable) 417bc69fdfcSSunil Goutham cfg |= CMR_PKT_RX_EN | CMR_PKT_TX_EN; 418bc69fdfcSSunil Goutham else 419bc69fdfcSSunil Goutham cfg &= ~(CMR_PKT_RX_EN | CMR_PKT_TX_EN); 420bc69fdfcSSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 4216465859aSSunil Goutham 4226465859aSSunil Goutham if (bgx->is_rgx) 4236465859aSSunil Goutham xcv_setup_link(enable ? lmac->link_up : 0, lmac->last_speed); 424bc69fdfcSSunil Goutham } 425bc69fdfcSSunil Goutham EXPORT_SYMBOL(bgx_lmac_rx_tx_enable); 426bc69fdfcSSunil Goutham 4274a875509SSunil Goutham /* Enables or disables timestamp insertion by BGX for Rx packets */ 4284a875509SSunil Goutham void bgx_config_timestamping(int node, int bgx_idx, int lmacid, bool enable) 4294a875509SSunil Goutham { 4304a875509SSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 4314a875509SSunil Goutham struct lmac *lmac; 4324a875509SSunil Goutham u64 csr_offset, cfg; 4334a875509SSunil Goutham 4344a875509SSunil Goutham if (!bgx) 4354a875509SSunil Goutham return; 4364a875509SSunil Goutham 4374a875509SSunil Goutham lmac = &bgx->lmac[lmacid]; 4384a875509SSunil Goutham 4394a875509SSunil Goutham if (lmac->lmac_type == BGX_MODE_SGMII || 4404a875509SSunil Goutham lmac->lmac_type == BGX_MODE_QSGMII || 4414a875509SSunil Goutham lmac->lmac_type == BGX_MODE_RGMII) 4424a875509SSunil Goutham csr_offset = BGX_GMP_GMI_RXX_FRM_CTL; 4434a875509SSunil Goutham else 4444a875509SSunil Goutham csr_offset = BGX_SMUX_RX_FRM_CTL; 4454a875509SSunil Goutham 4464a875509SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, csr_offset); 4474a875509SSunil Goutham 4484a875509SSunil Goutham if (enable) 4494a875509SSunil Goutham cfg |= BGX_PKT_RX_PTP_EN; 4504a875509SSunil Goutham else 4514a875509SSunil Goutham cfg &= ~BGX_PKT_RX_PTP_EN; 4524a875509SSunil Goutham bgx_reg_write(bgx, lmacid, csr_offset, cfg); 4534a875509SSunil Goutham } 4544a875509SSunil Goutham EXPORT_SYMBOL(bgx_config_timestamping); 4554a875509SSunil Goutham 456430da208SSunil Goutham void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause) 457430da208SSunil Goutham { 458430da208SSunil Goutham struct pfc *pfc = (struct pfc *)pause; 45978aacb6fSSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 460430da208SSunil Goutham struct lmac *lmac; 461430da208SSunil Goutham u64 cfg; 462430da208SSunil Goutham 463430da208SSunil Goutham if (!bgx) 464430da208SSunil Goutham return; 465430da208SSunil Goutham lmac = &bgx->lmac[lmacid]; 466430da208SSunil Goutham if (lmac->is_sgmii) 467430da208SSunil Goutham return; 468430da208SSunil Goutham 469430da208SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL); 470430da208SSunil Goutham pfc->fc_rx = cfg & RX_EN; 471430da208SSunil Goutham pfc->fc_tx = cfg & TX_EN; 472430da208SSunil Goutham pfc->autoneg = 0; 473430da208SSunil Goutham } 474430da208SSunil Goutham EXPORT_SYMBOL(bgx_lmac_get_pfc); 475430da208SSunil Goutham 476430da208SSunil Goutham void bgx_lmac_set_pfc(int node, int bgx_idx, int lmacid, void *pause) 477430da208SSunil Goutham { 478430da208SSunil Goutham struct pfc *pfc = (struct pfc *)pause; 47978aacb6fSSunil Goutham struct bgx *bgx = get_bgx(node, bgx_idx); 480430da208SSunil Goutham struct lmac *lmac; 481430da208SSunil Goutham u64 cfg; 482430da208SSunil Goutham 483430da208SSunil Goutham if (!bgx) 484430da208SSunil Goutham return; 485430da208SSunil Goutham lmac = &bgx->lmac[lmacid]; 486430da208SSunil Goutham if (lmac->is_sgmii) 487430da208SSunil Goutham return; 488430da208SSunil Goutham 489430da208SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL); 490430da208SSunil Goutham cfg &= ~(RX_EN | TX_EN); 491430da208SSunil Goutham cfg |= (pfc->fc_rx ? RX_EN : 0x00); 492430da208SSunil Goutham cfg |= (pfc->fc_tx ? TX_EN : 0x00); 493430da208SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, cfg); 494430da208SSunil Goutham } 495430da208SSunil Goutham EXPORT_SYMBOL(bgx_lmac_set_pfc); 496430da208SSunil Goutham 4974863dea3SSunil Goutham static void bgx_sgmii_change_link_state(struct lmac *lmac) 4984863dea3SSunil Goutham { 4994863dea3SSunil Goutham struct bgx *bgx = lmac->bgx; 5004863dea3SSunil Goutham u64 cmr_cfg; 5014863dea3SSunil Goutham u64 port_cfg = 0; 5024863dea3SSunil Goutham u64 misc_ctl = 0; 503500268e9SSunil Goutham bool tx_en, rx_en; 5044863dea3SSunil Goutham 5054863dea3SSunil Goutham cmr_cfg = bgx_reg_read(bgx, lmac->lmacid, BGX_CMRX_CFG); 506500268e9SSunil Goutham tx_en = cmr_cfg & CMR_PKT_TX_EN; 507500268e9SSunil Goutham rx_en = cmr_cfg & CMR_PKT_RX_EN; 508500268e9SSunil Goutham cmr_cfg &= ~(CMR_PKT_RX_EN | CMR_PKT_TX_EN); 5094863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_CMRX_CFG, cmr_cfg); 5104863dea3SSunil Goutham 511500268e9SSunil Goutham /* Wait for BGX RX to be idle */ 512500268e9SSunil Goutham if (bgx_poll_reg(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, 513500268e9SSunil Goutham GMI_PORT_CFG_RX_IDLE, false)) { 514500268e9SSunil Goutham dev_err(&bgx->pdev->dev, "BGX%d LMAC%d GMI RX not idle\n", 515500268e9SSunil Goutham bgx->bgx_id, lmac->lmacid); 516500268e9SSunil Goutham return; 517500268e9SSunil Goutham } 518500268e9SSunil Goutham 519500268e9SSunil Goutham /* Wait for BGX TX to be idle */ 520500268e9SSunil Goutham if (bgx_poll_reg(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, 521500268e9SSunil Goutham GMI_PORT_CFG_TX_IDLE, false)) { 522500268e9SSunil Goutham dev_err(&bgx->pdev->dev, "BGX%d LMAC%d GMI TX not idle\n", 523500268e9SSunil Goutham bgx->bgx_id, lmac->lmacid); 524500268e9SSunil Goutham return; 525500268e9SSunil Goutham } 526500268e9SSunil Goutham 5274863dea3SSunil Goutham port_cfg = bgx_reg_read(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG); 5284863dea3SSunil Goutham misc_ctl = bgx_reg_read(bgx, lmac->lmacid, BGX_GMP_PCS_MISCX_CTL); 5294863dea3SSunil Goutham 5304863dea3SSunil Goutham if (lmac->link_up) { 5314863dea3SSunil Goutham misc_ctl &= ~PCS_MISC_CTL_GMX_ENO; 5324863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_DUPLEX; 5334863dea3SSunil Goutham port_cfg |= (lmac->last_duplex << 2); 5344863dea3SSunil Goutham } else { 5354863dea3SSunil Goutham misc_ctl |= PCS_MISC_CTL_GMX_ENO; 5364863dea3SSunil Goutham } 5374863dea3SSunil Goutham 5384863dea3SSunil Goutham switch (lmac->last_speed) { 5394863dea3SSunil Goutham case 10: 5404863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SPEED; /* speed 0 */ 5414863dea3SSunil Goutham port_cfg |= GMI_PORT_CFG_SPEED_MSB; /* speed_msb 1 */ 5424863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SLOT_TIME; /* slottime 0 */ 5434863dea3SSunil Goutham misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 5444863dea3SSunil Goutham misc_ctl |= 50; /* samp_pt */ 5454863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 64); 5464863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_BURST, 0); 5474863dea3SSunil Goutham break; 5484863dea3SSunil Goutham case 100: 5494863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SPEED; /* speed 0 */ 5504863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SPEED_MSB; /* speed_msb 0 */ 5514863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SLOT_TIME; /* slottime 0 */ 5524863dea3SSunil Goutham misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 5534863dea3SSunil Goutham misc_ctl |= 5; /* samp_pt */ 5544863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 64); 5554863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_BURST, 0); 5564863dea3SSunil Goutham break; 5574863dea3SSunil Goutham case 1000: 5584863dea3SSunil Goutham port_cfg |= GMI_PORT_CFG_SPEED; /* speed 1 */ 5594863dea3SSunil Goutham port_cfg &= ~GMI_PORT_CFG_SPEED_MSB; /* speed_msb 0 */ 5604863dea3SSunil Goutham port_cfg |= GMI_PORT_CFG_SLOT_TIME; /* slottime 1 */ 5614863dea3SSunil Goutham misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 5624863dea3SSunil Goutham misc_ctl |= 1; /* samp_pt */ 5634863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 512); 5644863dea3SSunil Goutham if (lmac->last_duplex) 5654863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, 5664863dea3SSunil Goutham BGX_GMP_GMI_TXX_BURST, 0); 5674863dea3SSunil Goutham else 5684863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, 5694863dea3SSunil Goutham BGX_GMP_GMI_TXX_BURST, 8192); 5704863dea3SSunil Goutham break; 5714863dea3SSunil Goutham default: 5724863dea3SSunil Goutham break; 5734863dea3SSunil Goutham } 5744863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_PCS_MISCX_CTL, misc_ctl); 5754863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, port_cfg); 5764863dea3SSunil Goutham 577500268e9SSunil Goutham /* Restore CMR config settings */ 578500268e9SSunil Goutham cmr_cfg |= (rx_en ? CMR_PKT_RX_EN : 0) | (tx_en ? CMR_PKT_TX_EN : 0); 5794863dea3SSunil Goutham bgx_reg_write(bgx, lmac->lmacid, BGX_CMRX_CFG, cmr_cfg); 5806465859aSSunil Goutham 5816465859aSSunil Goutham if (bgx->is_rgx && (cmr_cfg & (CMR_PKT_RX_EN | CMR_PKT_TX_EN))) 5826465859aSSunil Goutham xcv_setup_link(lmac->link_up, lmac->last_speed); 5834863dea3SSunil Goutham } 5844863dea3SSunil Goutham 585fd7ec062SAleksey Makarov static void bgx_lmac_handler(struct net_device *netdev) 5864863dea3SSunil Goutham { 5874863dea3SSunil Goutham struct lmac *lmac = container_of(netdev, struct lmac, netdev); 588099a728dSxypron.glpk@gmx.de struct phy_device *phydev; 5894863dea3SSunil Goutham int link_changed = 0; 5904863dea3SSunil Goutham 5914863dea3SSunil Goutham if (!lmac) 5924863dea3SSunil Goutham return; 5934863dea3SSunil Goutham 594099a728dSxypron.glpk@gmx.de phydev = lmac->phydev; 595099a728dSxypron.glpk@gmx.de 5964863dea3SSunil Goutham if (!phydev->link && lmac->last_link) 5974863dea3SSunil Goutham link_changed = -1; 5984863dea3SSunil Goutham 5994863dea3SSunil Goutham if (phydev->link && 6004863dea3SSunil Goutham (lmac->last_duplex != phydev->duplex || 6014863dea3SSunil Goutham lmac->last_link != phydev->link || 6024863dea3SSunil Goutham lmac->last_speed != phydev->speed)) { 6034863dea3SSunil Goutham link_changed = 1; 6044863dea3SSunil Goutham } 6054863dea3SSunil Goutham 6064863dea3SSunil Goutham lmac->last_link = phydev->link; 6074863dea3SSunil Goutham lmac->last_speed = phydev->speed; 6084863dea3SSunil Goutham lmac->last_duplex = phydev->duplex; 6094863dea3SSunil Goutham 6104863dea3SSunil Goutham if (!link_changed) 6114863dea3SSunil Goutham return; 6124863dea3SSunil Goutham 6134863dea3SSunil Goutham if (link_changed > 0) 6144863dea3SSunil Goutham lmac->link_up = true; 6154863dea3SSunil Goutham else 6164863dea3SSunil Goutham lmac->link_up = false; 6174863dea3SSunil Goutham 6184863dea3SSunil Goutham if (lmac->is_sgmii) 6194863dea3SSunil Goutham bgx_sgmii_change_link_state(lmac); 6204863dea3SSunil Goutham else 6214863dea3SSunil Goutham bgx_xaui_check_link(lmac); 6224863dea3SSunil Goutham } 6234863dea3SSunil Goutham 6244863dea3SSunil Goutham u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx) 6254863dea3SSunil Goutham { 6264863dea3SSunil Goutham struct bgx *bgx; 6274863dea3SSunil Goutham 62878aacb6fSSunil Goutham bgx = get_bgx(node, bgx_idx); 6294863dea3SSunil Goutham if (!bgx) 6304863dea3SSunil Goutham return 0; 6314863dea3SSunil Goutham 6324863dea3SSunil Goutham if (idx > 8) 6334863dea3SSunil Goutham lmac = 0; 6344863dea3SSunil Goutham return bgx_reg_read(bgx, lmac, BGX_CMRX_RX_STAT0 + (idx * 8)); 6354863dea3SSunil Goutham } 6364863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_rx_stats); 6374863dea3SSunil Goutham 6384863dea3SSunil Goutham u64 bgx_get_tx_stats(int node, int bgx_idx, int lmac, int idx) 6394863dea3SSunil Goutham { 6404863dea3SSunil Goutham struct bgx *bgx; 6414863dea3SSunil Goutham 64278aacb6fSSunil Goutham bgx = get_bgx(node, bgx_idx); 6434863dea3SSunil Goutham if (!bgx) 6444863dea3SSunil Goutham return 0; 6454863dea3SSunil Goutham 6464863dea3SSunil Goutham return bgx_reg_read(bgx, lmac, BGX_CMRX_TX_STAT0 + (idx * 8)); 6474863dea3SSunil Goutham } 6484863dea3SSunil Goutham EXPORT_SYMBOL(bgx_get_tx_stats); 6494863dea3SSunil Goutham 650d77a2384SSunil Goutham /* Configure BGX LMAC in internal loopback mode */ 651d77a2384SSunil Goutham void bgx_lmac_internal_loopback(int node, int bgx_idx, 652d77a2384SSunil Goutham int lmac_idx, bool enable) 653d77a2384SSunil Goutham { 654d77a2384SSunil Goutham struct bgx *bgx; 655d77a2384SSunil Goutham struct lmac *lmac; 656d77a2384SSunil Goutham u64 cfg; 657d77a2384SSunil Goutham 65878aacb6fSSunil Goutham bgx = get_bgx(node, bgx_idx); 659d77a2384SSunil Goutham if (!bgx) 660d77a2384SSunil Goutham return; 661d77a2384SSunil Goutham 662d77a2384SSunil Goutham lmac = &bgx->lmac[lmac_idx]; 663d77a2384SSunil Goutham if (lmac->is_sgmii) { 664d77a2384SSunil Goutham cfg = bgx_reg_read(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL); 665d77a2384SSunil Goutham if (enable) 666d77a2384SSunil Goutham cfg |= PCS_MRX_CTL_LOOPBACK1; 667d77a2384SSunil Goutham else 668d77a2384SSunil Goutham cfg &= ~PCS_MRX_CTL_LOOPBACK1; 669d77a2384SSunil Goutham bgx_reg_write(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL, cfg); 670d77a2384SSunil Goutham } else { 671d77a2384SSunil Goutham cfg = bgx_reg_read(bgx, lmac_idx, BGX_SPUX_CONTROL1); 672d77a2384SSunil Goutham if (enable) 673d77a2384SSunil Goutham cfg |= SPU_CTL_LOOPBACK; 674d77a2384SSunil Goutham else 675d77a2384SSunil Goutham cfg &= ~SPU_CTL_LOOPBACK; 676d77a2384SSunil Goutham bgx_reg_write(bgx, lmac_idx, BGX_SPUX_CONTROL1, cfg); 677d77a2384SSunil Goutham } 678d77a2384SSunil Goutham } 679d77a2384SSunil Goutham EXPORT_SYMBOL(bgx_lmac_internal_loopback); 680d77a2384SSunil Goutham 6813f8057cfSSunil Goutham static int bgx_lmac_sgmii_init(struct bgx *bgx, struct lmac *lmac) 6824863dea3SSunil Goutham { 6833f8057cfSSunil Goutham int lmacid = lmac->lmacid; 6844863dea3SSunil Goutham u64 cfg; 6854863dea3SSunil Goutham 6864863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_THRESH, 0x30); 6874863dea3SSunil Goutham /* max packet size */ 6884863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_RXX_JABBER, MAX_FRAME_SIZE); 6894863dea3SSunil Goutham 6904863dea3SSunil Goutham /* Disable frame alignment if using preamble */ 6914863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND); 6924863dea3SSunil Goutham if (cfg & 1) 6934863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_GMP_GMI_TXX_SGMII_CTL, 0); 6944863dea3SSunil Goutham 6954863dea3SSunil Goutham /* Enable lmac */ 6964863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 6974863dea3SSunil Goutham 6984863dea3SSunil Goutham /* PCS reset */ 6994863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, PCS_MRX_CTL_RESET); 7004863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, 7014863dea3SSunil Goutham PCS_MRX_CTL_RESET, true)) { 7024863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "BGX PCS reset not completed\n"); 7034863dea3SSunil Goutham return -1; 7044863dea3SSunil Goutham } 7054863dea3SSunil Goutham 7064863dea3SSunil Goutham /* power down, reset autoneg, autoneg enable */ 7074863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_PCS_MRX_CTL); 7084863dea3SSunil Goutham cfg &= ~PCS_MRX_CTL_PWR_DN; 709075ad765SThanneeru Srinivasulu cfg |= PCS_MRX_CTL_RST_AN; 710075ad765SThanneeru Srinivasulu if (lmac->phydev) { 711075ad765SThanneeru Srinivasulu cfg |= PCS_MRX_CTL_AN_EN; 712075ad765SThanneeru Srinivasulu } else { 713075ad765SThanneeru Srinivasulu /* In scenarios where PHY driver is not present or it's a 714075ad765SThanneeru Srinivasulu * non-standard PHY, FW sets AN_EN to inform Linux driver 715075ad765SThanneeru Srinivasulu * to do auto-neg and link polling or not. 716075ad765SThanneeru Srinivasulu */ 717075ad765SThanneeru Srinivasulu if (cfg & PCS_MRX_CTL_AN_EN) 718075ad765SThanneeru Srinivasulu lmac->autoneg = true; 719075ad765SThanneeru Srinivasulu } 7204863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, cfg); 7214863dea3SSunil Goutham 7223f8057cfSSunil Goutham if (lmac->lmac_type == BGX_MODE_QSGMII) { 7233f8057cfSSunil Goutham /* Disable disparity check for QSGMII */ 7243f8057cfSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_PCS_MISCX_CTL); 7253f8057cfSSunil Goutham cfg &= ~PCS_MISC_CTL_DISP_EN; 7263f8057cfSSunil Goutham bgx_reg_write(bgx, lmacid, BGX_GMP_PCS_MISCX_CTL, cfg); 7273f8057cfSSunil Goutham return 0; 7283f8057cfSSunil Goutham } 7293f8057cfSSunil Goutham 730075ad765SThanneeru Srinivasulu if ((lmac->lmac_type == BGX_MODE_SGMII) && lmac->phydev) { 7314863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_GMP_PCS_MRX_STATUS, 7324863dea3SSunil Goutham PCS_MRX_STATUS_AN_CPT, false)) { 7334863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "BGX AN_CPT not completed\n"); 7344863dea3SSunil Goutham return -1; 7354863dea3SSunil Goutham } 7366465859aSSunil Goutham } 7374863dea3SSunil Goutham 7384863dea3SSunil Goutham return 0; 7394863dea3SSunil Goutham } 7404863dea3SSunil Goutham 7410bcb7d51SSunil Goutham static int bgx_lmac_xaui_init(struct bgx *bgx, struct lmac *lmac) 7424863dea3SSunil Goutham { 7434863dea3SSunil Goutham u64 cfg; 7440bcb7d51SSunil Goutham int lmacid = lmac->lmacid; 7454863dea3SSunil Goutham 7464863dea3SSunil Goutham /* Reset SPU */ 7474863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET); 7484863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET, true)) { 7494863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "BGX SPU reset not completed\n"); 7504863dea3SSunil Goutham return -1; 7514863dea3SSunil Goutham } 7524863dea3SSunil Goutham 7534863dea3SSunil Goutham /* Disable LMAC */ 7544863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 7554863dea3SSunil Goutham cfg &= ~CMR_EN; 7564863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 7574863dea3SSunil Goutham 7584863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_LOW_POWER); 7594863dea3SSunil Goutham /* Set interleaved running disparity for RXAUI */ 76093db2cf8SSunil Goutham if (lmac->lmac_type == BGX_MODE_RXAUI) 7614863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SPUX_MISC_CONTROL, 76293db2cf8SSunil Goutham SPU_MISC_CTL_INTLV_RDISP); 76393db2cf8SSunil Goutham 76493db2cf8SSunil Goutham /* Clear receive packet disable */ 76593db2cf8SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_MISC_CONTROL); 76693db2cf8SSunil Goutham cfg &= ~SPU_MISC_CTL_RX_DIS; 76793db2cf8SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_MISC_CONTROL, cfg); 7684863dea3SSunil Goutham 7694863dea3SSunil Goutham /* clear all interrupts */ 7704863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_RX_INT); 7714863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_RX_INT, cfg); 7724863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_INT); 7734863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_INT, cfg); 7744863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 7754863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 7764863dea3SSunil Goutham 7770bcb7d51SSunil Goutham if (lmac->use_training) { 7784863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LP_CUP, 0x00); 7794863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LD_CUP, 0x00); 7804863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LD_REP, 0x00); 7814863dea3SSunil Goutham /* training enable */ 7824863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, 7834863dea3SSunil Goutham BGX_SPUX_BR_PMD_CRTL, SPU_PMD_CRTL_TRAIN_EN); 7844863dea3SSunil Goutham } 7854863dea3SSunil Goutham 7864863dea3SSunil Goutham /* Append FCS to each packet */ 7874863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_APPEND, SMU_TX_APPEND_FCS_D); 7884863dea3SSunil Goutham 7894863dea3SSunil Goutham /* Disable forward error correction */ 7904863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_FEC_CONTROL); 7914863dea3SSunil Goutham cfg &= ~SPU_FEC_CTL_FEC_EN; 7924863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_FEC_CONTROL, cfg); 7934863dea3SSunil Goutham 7944863dea3SSunil Goutham /* Disable autoneg */ 7954863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_AN_CONTROL); 7964863dea3SSunil Goutham cfg = cfg & ~(SPU_AN_CTL_AN_EN | SPU_AN_CTL_XNP_EN); 7974863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_AN_CONTROL, cfg); 7984863dea3SSunil Goutham 7994863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_AN_ADV); 8000bcb7d51SSunil Goutham if (lmac->lmac_type == BGX_MODE_10G_KR) 8014863dea3SSunil Goutham cfg |= (1 << 23); 8020bcb7d51SSunil Goutham else if (lmac->lmac_type == BGX_MODE_40G_KR) 8034863dea3SSunil Goutham cfg |= (1 << 24); 8044863dea3SSunil Goutham else 8054863dea3SSunil Goutham cfg &= ~((1 << 23) | (1 << 24)); 8064863dea3SSunil Goutham cfg = cfg & (~((1ULL << 25) | (1ULL << 22) | (1ULL << 12))); 8074863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_AN_ADV, cfg); 8084863dea3SSunil Goutham 8094863dea3SSunil Goutham cfg = bgx_reg_read(bgx, 0, BGX_SPU_DBG_CONTROL); 8104863dea3SSunil Goutham cfg &= ~SPU_DBG_CTL_AN_ARB_LINK_CHK_EN; 8114863dea3SSunil Goutham bgx_reg_write(bgx, 0, BGX_SPU_DBG_CONTROL, cfg); 8124863dea3SSunil Goutham 8134863dea3SSunil Goutham /* Enable lmac */ 8144863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 8154863dea3SSunil Goutham 8164863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_CONTROL1); 8174863dea3SSunil Goutham cfg &= ~SPU_CTL_LOW_POWER; 8184863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_CONTROL1, cfg); 8194863dea3SSunil Goutham 8204863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_CTL); 8214863dea3SSunil Goutham cfg &= ~SMU_TX_CTL_UNI_EN; 8224863dea3SSunil Goutham cfg |= SMU_TX_CTL_DIC_EN; 8234863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_CTL, cfg); 8244863dea3SSunil Goutham 825430da208SSunil Goutham /* Enable receive and transmission of pause frames */ 826430da208SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, ((0xffffULL << 32) | 827430da208SSunil Goutham BCK_EN | DRP_EN | TX_EN | RX_EN)); 828430da208SSunil Goutham /* Configure pause time and interval */ 829430da208SSunil Goutham bgx_reg_write(bgx, lmacid, 830430da208SSunil Goutham BGX_SMUX_TX_PAUSE_PKT_TIME, DEFAULT_PAUSE_TIME); 831430da208SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_PAUSE_PKT_INTERVAL); 832430da208SSunil Goutham cfg &= ~0xFFFFull; 833430da208SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_PAUSE_PKT_INTERVAL, 834430da208SSunil Goutham cfg | (DEFAULT_PAUSE_TIME - 0x1000)); 835430da208SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_PAUSE_ZERO, 0x01); 836430da208SSunil Goutham 8374863dea3SSunil Goutham /* take lmac_count into account */ 8384863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_THRESH, (0x100 - 1)); 8394863dea3SSunil Goutham /* max packet size */ 8404863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SMUX_RX_JABBER, MAX_FRAME_SIZE); 8414863dea3SSunil Goutham 8424863dea3SSunil Goutham return 0; 8434863dea3SSunil Goutham } 8444863dea3SSunil Goutham 8454863dea3SSunil Goutham static int bgx_xaui_check_link(struct lmac *lmac) 8464863dea3SSunil Goutham { 8474863dea3SSunil Goutham struct bgx *bgx = lmac->bgx; 8484863dea3SSunil Goutham int lmacid = lmac->lmacid; 8490bcb7d51SSunil Goutham int lmac_type = lmac->lmac_type; 8504863dea3SSunil Goutham u64 cfg; 8514863dea3SSunil Goutham 8520bcb7d51SSunil Goutham if (lmac->use_training) { 8534863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 8544863dea3SSunil Goutham if (!(cfg & (1ull << 13))) { 8554863dea3SSunil Goutham cfg = (1ull << 13) | (1ull << 14); 8564863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 8574863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL); 8584863dea3SSunil Goutham cfg |= (1ull << 0); 8594863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL, cfg); 8604863dea3SSunil Goutham return -1; 8614863dea3SSunil Goutham } 8624863dea3SSunil Goutham } 8634863dea3SSunil Goutham 8644863dea3SSunil Goutham /* wait for PCS to come out of reset */ 8654863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET, true)) { 8664863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "BGX SPU reset not completed\n"); 8674863dea3SSunil Goutham return -1; 8684863dea3SSunil Goutham } 8694863dea3SSunil Goutham 8704863dea3SSunil Goutham if ((lmac_type == BGX_MODE_10G_KR) || (lmac_type == BGX_MODE_XFI) || 8714863dea3SSunil Goutham (lmac_type == BGX_MODE_40G_KR) || (lmac_type == BGX_MODE_XLAUI)) { 8724863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_BR_STATUS1, 8734863dea3SSunil Goutham SPU_BR_STATUS_BLK_LOCK, false)) { 8744863dea3SSunil Goutham dev_err(&bgx->pdev->dev, 8754863dea3SSunil Goutham "SPU_BR_STATUS_BLK_LOCK not completed\n"); 8764863dea3SSunil Goutham return -1; 8774863dea3SSunil Goutham } 8784863dea3SSunil Goutham } else { 8794863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_BX_STATUS, 8804863dea3SSunil Goutham SPU_BX_STATUS_RX_ALIGN, false)) { 8814863dea3SSunil Goutham dev_err(&bgx->pdev->dev, 8824863dea3SSunil Goutham "SPU_BX_STATUS_RX_ALIGN not completed\n"); 8834863dea3SSunil Goutham return -1; 8844863dea3SSunil Goutham } 8854863dea3SSunil Goutham } 8864863dea3SSunil Goutham 8874863dea3SSunil Goutham /* Clear rcvflt bit (latching high) and read it back */ 8883f4c68cfSSunil Goutham if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) 8893f4c68cfSSunil Goutham bgx_reg_modify(bgx, lmacid, 8903f4c68cfSSunil Goutham BGX_SPUX_STATUS2, SPU_STATUS2_RCVFLT); 8914863dea3SSunil Goutham if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) { 8924863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "Receive fault, retry training\n"); 8930bcb7d51SSunil Goutham if (lmac->use_training) { 8944863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 8954863dea3SSunil Goutham if (!(cfg & (1ull << 13))) { 8964863dea3SSunil Goutham cfg = (1ull << 13) | (1ull << 14); 8974863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 8984863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, 8994863dea3SSunil Goutham BGX_SPUX_BR_PMD_CRTL); 9004863dea3SSunil Goutham cfg |= (1ull << 0); 9014863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, 9024863dea3SSunil Goutham BGX_SPUX_BR_PMD_CRTL, cfg); 9034863dea3SSunil Goutham return -1; 9044863dea3SSunil Goutham } 9054863dea3SSunil Goutham } 9064863dea3SSunil Goutham return -1; 9074863dea3SSunil Goutham } 9084863dea3SSunil Goutham 9094863dea3SSunil Goutham /* Wait for BGX RX to be idle */ 9104863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_CTL, SMU_CTL_RX_IDLE, false)) { 9114863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "SMU RX not idle\n"); 9124863dea3SSunil Goutham return -1; 9134863dea3SSunil Goutham } 9144863dea3SSunil Goutham 9154863dea3SSunil Goutham /* Wait for BGX TX to be idle */ 9164863dea3SSunil Goutham if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_CTL, SMU_CTL_TX_IDLE, false)) { 9174863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "SMU TX not idle\n"); 9184863dea3SSunil Goutham return -1; 9194863dea3SSunil Goutham } 9204863dea3SSunil Goutham 9213f4c68cfSSunil Goutham /* Check for MAC RX faults */ 9223f4c68cfSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_RX_CTL); 9233f4c68cfSSunil Goutham /* 0 - Link is okay, 1 - Local fault, 2 - Remote fault */ 9243f4c68cfSSunil Goutham cfg &= SMU_RX_CTL_STATUS; 9253f4c68cfSSunil Goutham if (!cfg) 9264863dea3SSunil Goutham return 0; 9273f4c68cfSSunil Goutham 9283f4c68cfSSunil Goutham /* Rx local/remote fault seen. 9293f4c68cfSSunil Goutham * Do lmac reinit to see if condition recovers 9303f4c68cfSSunil Goutham */ 9310bcb7d51SSunil Goutham bgx_lmac_xaui_init(bgx, lmac); 9323f4c68cfSSunil Goutham 9333f4c68cfSSunil Goutham return -1; 9344863dea3SSunil Goutham } 9354863dea3SSunil Goutham 936075ad765SThanneeru Srinivasulu static void bgx_poll_for_sgmii_link(struct lmac *lmac) 937075ad765SThanneeru Srinivasulu { 938075ad765SThanneeru Srinivasulu u64 pcs_link, an_result; 939075ad765SThanneeru Srinivasulu u8 speed; 940075ad765SThanneeru Srinivasulu 941075ad765SThanneeru Srinivasulu pcs_link = bgx_reg_read(lmac->bgx, lmac->lmacid, 942075ad765SThanneeru Srinivasulu BGX_GMP_PCS_MRX_STATUS); 943075ad765SThanneeru Srinivasulu 944075ad765SThanneeru Srinivasulu /*Link state bit is sticky, read it again*/ 945075ad765SThanneeru Srinivasulu if (!(pcs_link & PCS_MRX_STATUS_LINK)) 946075ad765SThanneeru Srinivasulu pcs_link = bgx_reg_read(lmac->bgx, lmac->lmacid, 947075ad765SThanneeru Srinivasulu BGX_GMP_PCS_MRX_STATUS); 948075ad765SThanneeru Srinivasulu 949075ad765SThanneeru Srinivasulu if (bgx_poll_reg(lmac->bgx, lmac->lmacid, BGX_GMP_PCS_MRX_STATUS, 950075ad765SThanneeru Srinivasulu PCS_MRX_STATUS_AN_CPT, false)) { 951075ad765SThanneeru Srinivasulu lmac->link_up = false; 952075ad765SThanneeru Srinivasulu lmac->last_speed = SPEED_UNKNOWN; 953075ad765SThanneeru Srinivasulu lmac->last_duplex = DUPLEX_UNKNOWN; 954075ad765SThanneeru Srinivasulu goto next_poll; 955075ad765SThanneeru Srinivasulu } 956075ad765SThanneeru Srinivasulu 957075ad765SThanneeru Srinivasulu lmac->link_up = ((pcs_link & PCS_MRX_STATUS_LINK) != 0) ? true : false; 958075ad765SThanneeru Srinivasulu an_result = bgx_reg_read(lmac->bgx, lmac->lmacid, 959075ad765SThanneeru Srinivasulu BGX_GMP_PCS_ANX_AN_RESULTS); 960075ad765SThanneeru Srinivasulu 961075ad765SThanneeru Srinivasulu speed = (an_result >> 3) & 0x3; 962075ad765SThanneeru Srinivasulu lmac->last_duplex = (an_result >> 1) & 0x1; 963075ad765SThanneeru Srinivasulu switch (speed) { 964075ad765SThanneeru Srinivasulu case 0: 965075ad765SThanneeru Srinivasulu lmac->last_speed = 10; 966075ad765SThanneeru Srinivasulu break; 967075ad765SThanneeru Srinivasulu case 1: 968075ad765SThanneeru Srinivasulu lmac->last_speed = 100; 969075ad765SThanneeru Srinivasulu break; 970075ad765SThanneeru Srinivasulu case 2: 971075ad765SThanneeru Srinivasulu lmac->last_speed = 1000; 972075ad765SThanneeru Srinivasulu break; 973075ad765SThanneeru Srinivasulu default: 974075ad765SThanneeru Srinivasulu lmac->link_up = false; 975075ad765SThanneeru Srinivasulu lmac->last_speed = SPEED_UNKNOWN; 976075ad765SThanneeru Srinivasulu lmac->last_duplex = DUPLEX_UNKNOWN; 977075ad765SThanneeru Srinivasulu break; 978075ad765SThanneeru Srinivasulu } 979075ad765SThanneeru Srinivasulu 980075ad765SThanneeru Srinivasulu next_poll: 981075ad765SThanneeru Srinivasulu 982075ad765SThanneeru Srinivasulu if (lmac->last_link != lmac->link_up) { 983075ad765SThanneeru Srinivasulu if (lmac->link_up) 984075ad765SThanneeru Srinivasulu bgx_sgmii_change_link_state(lmac); 985075ad765SThanneeru Srinivasulu lmac->last_link = lmac->link_up; 986075ad765SThanneeru Srinivasulu } 987075ad765SThanneeru Srinivasulu 988075ad765SThanneeru Srinivasulu queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 3); 989075ad765SThanneeru Srinivasulu } 990075ad765SThanneeru Srinivasulu 9914863dea3SSunil Goutham static void bgx_poll_for_link(struct work_struct *work) 9924863dea3SSunil Goutham { 9934863dea3SSunil Goutham struct lmac *lmac; 9943f4c68cfSSunil Goutham u64 spu_link, smu_link; 9954863dea3SSunil Goutham 9964863dea3SSunil Goutham lmac = container_of(work, struct lmac, dwork.work); 997075ad765SThanneeru Srinivasulu if (lmac->is_sgmii) { 998075ad765SThanneeru Srinivasulu bgx_poll_for_sgmii_link(lmac); 999075ad765SThanneeru Srinivasulu return; 1000075ad765SThanneeru Srinivasulu } 10014863dea3SSunil Goutham 10024863dea3SSunil Goutham /* Receive link is latching low. Force it high and verify it */ 10034863dea3SSunil Goutham bgx_reg_modify(lmac->bgx, lmac->lmacid, 10044863dea3SSunil Goutham BGX_SPUX_STATUS1, SPU_STATUS1_RCV_LNK); 10054863dea3SSunil Goutham bgx_poll_reg(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1, 10064863dea3SSunil Goutham SPU_STATUS1_RCV_LNK, false); 10074863dea3SSunil Goutham 10083f4c68cfSSunil Goutham spu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1); 10093f4c68cfSSunil Goutham smu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SMUX_RX_CTL); 10103f4c68cfSSunil Goutham 10113f4c68cfSSunil Goutham if ((spu_link & SPU_STATUS1_RCV_LNK) && 10123f4c68cfSSunil Goutham !(smu_link & SMU_RX_CTL_STATUS)) { 10134863dea3SSunil Goutham lmac->link_up = 1; 10140bcb7d51SSunil Goutham if (lmac->lmac_type == BGX_MODE_XLAUI) 10154863dea3SSunil Goutham lmac->last_speed = 40000; 10164863dea3SSunil Goutham else 10174863dea3SSunil Goutham lmac->last_speed = 10000; 10184863dea3SSunil Goutham lmac->last_duplex = 1; 10194863dea3SSunil Goutham } else { 10204863dea3SSunil Goutham lmac->link_up = 0; 10210b72a9a1SSunil Goutham lmac->last_speed = SPEED_UNKNOWN; 10220b72a9a1SSunil Goutham lmac->last_duplex = DUPLEX_UNKNOWN; 10234863dea3SSunil Goutham } 10244863dea3SSunil Goutham 10254863dea3SSunil Goutham if (lmac->last_link != lmac->link_up) { 10263f4c68cfSSunil Goutham if (lmac->link_up) { 10273f4c68cfSSunil Goutham if (bgx_xaui_check_link(lmac)) { 10283f4c68cfSSunil Goutham /* Errors, clear link_up state */ 10293f4c68cfSSunil Goutham lmac->link_up = 0; 10303f4c68cfSSunil Goutham lmac->last_speed = SPEED_UNKNOWN; 10313f4c68cfSSunil Goutham lmac->last_duplex = DUPLEX_UNKNOWN; 10323f4c68cfSSunil Goutham } 10333f4c68cfSSunil Goutham } 10344863dea3SSunil Goutham lmac->last_link = lmac->link_up; 10354863dea3SSunil Goutham } 10364863dea3SSunil Goutham 10374863dea3SSunil Goutham queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 2); 10384863dea3SSunil Goutham } 10394863dea3SSunil Goutham 10403f8057cfSSunil Goutham static int phy_interface_mode(u8 lmac_type) 10413f8057cfSSunil Goutham { 10423f8057cfSSunil Goutham if (lmac_type == BGX_MODE_QSGMII) 10433f8057cfSSunil Goutham return PHY_INTERFACE_MODE_QSGMII; 10446465859aSSunil Goutham if (lmac_type == BGX_MODE_RGMII) 10456465859aSSunil Goutham return PHY_INTERFACE_MODE_RGMII; 10463f8057cfSSunil Goutham 10473f8057cfSSunil Goutham return PHY_INTERFACE_MODE_SGMII; 10483f8057cfSSunil Goutham } 10493f8057cfSSunil Goutham 10504863dea3SSunil Goutham static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid) 10514863dea3SSunil Goutham { 10524863dea3SSunil Goutham struct lmac *lmac; 10534863dea3SSunil Goutham u64 cfg; 10544863dea3SSunil Goutham 10554863dea3SSunil Goutham lmac = &bgx->lmac[lmacid]; 10564863dea3SSunil Goutham lmac->bgx = bgx; 10574863dea3SSunil Goutham 10583f8057cfSSunil Goutham if ((lmac->lmac_type == BGX_MODE_SGMII) || 10596465859aSSunil Goutham (lmac->lmac_type == BGX_MODE_QSGMII) || 10606465859aSSunil Goutham (lmac->lmac_type == BGX_MODE_RGMII)) { 10614863dea3SSunil Goutham lmac->is_sgmii = 1; 10623f8057cfSSunil Goutham if (bgx_lmac_sgmii_init(bgx, lmac)) 10634863dea3SSunil Goutham return -1; 10644863dea3SSunil Goutham } else { 10654863dea3SSunil Goutham lmac->is_sgmii = 0; 10660bcb7d51SSunil Goutham if (bgx_lmac_xaui_init(bgx, lmac)) 10674863dea3SSunil Goutham return -1; 10684863dea3SSunil Goutham } 10694863dea3SSunil Goutham 10704863dea3SSunil Goutham if (lmac->is_sgmii) { 10714863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND); 10724863dea3SSunil Goutham cfg |= ((1ull << 2) | (1ull << 1)); /* FCS and PAD */ 10734863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND, cfg); 10744863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_GMP_GMI_TXX_MIN_PKT, 60 - 1); 10754863dea3SSunil Goutham } else { 10764863dea3SSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_APPEND); 10774863dea3SSunil Goutham cfg |= ((1ull << 2) | (1ull << 1)); /* FCS and PAD */ 10784863dea3SSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_APPEND, cfg); 10794863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_MIN_PKT, 60 + 4); 10804863dea3SSunil Goutham } 10814863dea3SSunil Goutham 10823a34ecfdSVadim Lomovtsev /* actual number of filters available to exact LMAC */ 10833a34ecfdSVadim Lomovtsev lmac->dmacs_count = (RX_DMAC_COUNT / bgx->lmac_count); 10843a34ecfdSVadim Lomovtsev lmac->dmacs = kcalloc(lmac->dmacs_count, sizeof(*lmac->dmacs), 10853a34ecfdSVadim Lomovtsev GFP_KERNEL); 1086a94cead7SColin Ian King if (!lmac->dmacs) 1087a94cead7SColin Ian King return -ENOMEM; 10883a34ecfdSVadim Lomovtsev 10894863dea3SSunil Goutham /* Enable lmac */ 1090bc69fdfcSSunil Goutham bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 10914863dea3SSunil Goutham 10924863dea3SSunil Goutham /* Restore default cfg, incase low level firmware changed it */ 10934863dea3SSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL, 0x03); 10944863dea3SSunil Goutham 10950bcb7d51SSunil Goutham if ((lmac->lmac_type != BGX_MODE_XFI) && 10960bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_XLAUI) && 10970bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_40G_KR) && 10980bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_10G_KR)) { 1099075ad765SThanneeru Srinivasulu if (!lmac->phydev) { 1100075ad765SThanneeru Srinivasulu if (lmac->autoneg) { 1101075ad765SThanneeru Srinivasulu bgx_reg_write(bgx, lmacid, 1102075ad765SThanneeru Srinivasulu BGX_GMP_PCS_LINKX_TIMER, 1103075ad765SThanneeru Srinivasulu PCS_LINKX_TIMER_COUNT); 1104075ad765SThanneeru Srinivasulu goto poll; 1105075ad765SThanneeru Srinivasulu } else { 1106075ad765SThanneeru Srinivasulu /* Default to below link speed and duplex */ 1107075ad765SThanneeru Srinivasulu lmac->link_up = true; 1108075ad765SThanneeru Srinivasulu lmac->last_speed = 1000; 1109075ad765SThanneeru Srinivasulu lmac->last_duplex = 1; 1110075ad765SThanneeru Srinivasulu bgx_sgmii_change_link_state(lmac); 1111075ad765SThanneeru Srinivasulu return 0; 1112075ad765SThanneeru Srinivasulu } 1113075ad765SThanneeru Srinivasulu } 11144863dea3SSunil Goutham lmac->phydev->dev_flags = 0; 11154863dea3SSunil Goutham 11164863dea3SSunil Goutham if (phy_connect_direct(&lmac->netdev, lmac->phydev, 11174863dea3SSunil Goutham bgx_lmac_handler, 11183f8057cfSSunil Goutham phy_interface_mode(lmac->lmac_type))) 11194863dea3SSunil Goutham return -ENODEV; 11204863dea3SSunil Goutham 11214863dea3SSunil Goutham phy_start_aneg(lmac->phydev); 1122075ad765SThanneeru Srinivasulu return 0; 1123075ad765SThanneeru Srinivasulu } 1124075ad765SThanneeru Srinivasulu 1125075ad765SThanneeru Srinivasulu poll: 11264863dea3SSunil Goutham lmac->check_link = alloc_workqueue("check_link", WQ_UNBOUND | 11274863dea3SSunil Goutham WQ_MEM_RECLAIM, 1); 11284863dea3SSunil Goutham if (!lmac->check_link) 11294863dea3SSunil Goutham return -ENOMEM; 11304863dea3SSunil Goutham INIT_DELAYED_WORK(&lmac->dwork, bgx_poll_for_link); 11314863dea3SSunil Goutham queue_delayed_work(lmac->check_link, &lmac->dwork, 0); 11324863dea3SSunil Goutham 11334863dea3SSunil Goutham return 0; 11344863dea3SSunil Goutham } 11354863dea3SSunil Goutham 1136fd7ec062SAleksey Makarov static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid) 11374863dea3SSunil Goutham { 11384863dea3SSunil Goutham struct lmac *lmac; 11393f4c68cfSSunil Goutham u64 cfg; 11404863dea3SSunil Goutham 11414863dea3SSunil Goutham lmac = &bgx->lmac[lmacid]; 11424863dea3SSunil Goutham if (lmac->check_link) { 11434863dea3SSunil Goutham /* Destroy work queue */ 1144a7b1f535SThanneeru Srinivasulu cancel_delayed_work_sync(&lmac->dwork); 11454863dea3SSunil Goutham destroy_workqueue(lmac->check_link); 11464863dea3SSunil Goutham } 11474863dea3SSunil Goutham 11483f4c68cfSSunil Goutham /* Disable packet reception */ 11493f4c68cfSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 11503f4c68cfSSunil Goutham cfg &= ~CMR_PKT_RX_EN; 11513f4c68cfSSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 11523f4c68cfSSunil Goutham 11533f4c68cfSSunil Goutham /* Give chance for Rx/Tx FIFO to get drained */ 11543f4c68cfSSunil Goutham bgx_poll_reg(bgx, lmacid, BGX_CMRX_RX_FIFO_LEN, (u64)0x1FFF, true); 11553f4c68cfSSunil Goutham bgx_poll_reg(bgx, lmacid, BGX_CMRX_TX_FIFO_LEN, (u64)0x3FFF, true); 11563f4c68cfSSunil Goutham 11573f4c68cfSSunil Goutham /* Disable packet transmission */ 11583f4c68cfSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 11593f4c68cfSSunil Goutham cfg &= ~CMR_PKT_TX_EN; 11603f4c68cfSSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 11613f4c68cfSSunil Goutham 11623f4c68cfSSunil Goutham /* Disable serdes lanes */ 11633f4c68cfSSunil Goutham if (!lmac->is_sgmii) 11643f4c68cfSSunil Goutham bgx_reg_modify(bgx, lmacid, 11653f4c68cfSSunil Goutham BGX_SPUX_CONTROL1, SPU_CTL_LOW_POWER); 11663f4c68cfSSunil Goutham else 11673f4c68cfSSunil Goutham bgx_reg_modify(bgx, lmacid, 11683f4c68cfSSunil Goutham BGX_GMP_PCS_MRX_CTL, PCS_MRX_CTL_PWR_DN); 11693f4c68cfSSunil Goutham 11703f4c68cfSSunil Goutham /* Disable LMAC */ 11713f4c68cfSSunil Goutham cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 11723f4c68cfSSunil Goutham cfg &= ~CMR_EN; 11733f4c68cfSSunil Goutham bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 11743f4c68cfSSunil Goutham 11753a34ecfdSVadim Lomovtsev bgx_flush_dmac_cam_filter(bgx, lmacid); 11763a34ecfdSVadim Lomovtsev kfree(lmac->dmacs); 11774863dea3SSunil Goutham 11780bcb7d51SSunil Goutham if ((lmac->lmac_type != BGX_MODE_XFI) && 11790bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_XLAUI) && 11800bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_40G_KR) && 11810bcb7d51SSunil Goutham (lmac->lmac_type != BGX_MODE_10G_KR) && lmac->phydev) 11824863dea3SSunil Goutham phy_disconnect(lmac->phydev); 11834863dea3SSunil Goutham 11844863dea3SSunil Goutham lmac->phydev = NULL; 11854863dea3SSunil Goutham } 11864863dea3SSunil Goutham 11874863dea3SSunil Goutham static void bgx_init_hw(struct bgx *bgx) 11884863dea3SSunil Goutham { 11894863dea3SSunil Goutham int i; 11900bcb7d51SSunil Goutham struct lmac *lmac; 11914863dea3SSunil Goutham 11924863dea3SSunil Goutham bgx_reg_modify(bgx, 0, BGX_CMR_GLOBAL_CFG, CMR_GLOBAL_CFG_FCS_STRIP); 11934863dea3SSunil Goutham if (bgx_reg_read(bgx, 0, BGX_CMR_BIST_STATUS)) 11944863dea3SSunil Goutham dev_err(&bgx->pdev->dev, "BGX%d BIST failed\n", bgx->bgx_id); 11954863dea3SSunil Goutham 11964863dea3SSunil Goutham /* Set lmac type and lane2serdes mapping */ 11974863dea3SSunil Goutham for (i = 0; i < bgx->lmac_count; i++) { 11980bcb7d51SSunil Goutham lmac = &bgx->lmac[i]; 11994863dea3SSunil Goutham bgx_reg_write(bgx, i, BGX_CMRX_CFG, 12000bcb7d51SSunil Goutham (lmac->lmac_type << 8) | lmac->lane_to_sds); 12014863dea3SSunil Goutham bgx->lmac[i].lmacid_bd = lmac_count; 12024863dea3SSunil Goutham lmac_count++; 12034863dea3SSunil Goutham } 12044863dea3SSunil Goutham 12054863dea3SSunil Goutham bgx_reg_write(bgx, 0, BGX_CMR_TX_LMACS, bgx->lmac_count); 12064863dea3SSunil Goutham bgx_reg_write(bgx, 0, BGX_CMR_RX_LMACS, bgx->lmac_count); 12074863dea3SSunil Goutham 12084863dea3SSunil Goutham /* Set the backpressure AND mask */ 12094863dea3SSunil Goutham for (i = 0; i < bgx->lmac_count; i++) 12104863dea3SSunil Goutham bgx_reg_modify(bgx, 0, BGX_CMR_CHAN_MSK_AND, 12114863dea3SSunil Goutham ((1ULL << MAX_BGX_CHANS_PER_LMAC) - 1) << 12124863dea3SSunil Goutham (i * MAX_BGX_CHANS_PER_LMAC)); 12134863dea3SSunil Goutham 12144863dea3SSunil Goutham /* Disable all MAC filtering */ 12154863dea3SSunil Goutham for (i = 0; i < RX_DMAC_COUNT; i++) 12164863dea3SSunil Goutham bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + (i * 8), 0x00); 12174863dea3SSunil Goutham 12184863dea3SSunil Goutham /* Disable MAC steering (NCSI traffic) */ 12194863dea3SSunil Goutham for (i = 0; i < RX_TRAFFIC_STEER_RULE_COUNT; i++) 1220f6d25acaSVadim Lomovtsev bgx_reg_write(bgx, 0, BGX_CMR_RX_STEERING + (i * 8), 0x00); 12214863dea3SSunil Goutham } 12224863dea3SSunil Goutham 12233f8057cfSSunil Goutham static u8 bgx_get_lane2sds_cfg(struct bgx *bgx, struct lmac *lmac) 12243f8057cfSSunil Goutham { 12253f8057cfSSunil Goutham return (u8)(bgx_reg_read(bgx, lmac->lmacid, BGX_CMRX_CFG) & 0xFF); 12263f8057cfSSunil Goutham } 12273f8057cfSSunil Goutham 12280bcb7d51SSunil Goutham static void bgx_print_qlm_mode(struct bgx *bgx, u8 lmacid) 12294863dea3SSunil Goutham { 12304863dea3SSunil Goutham struct device *dev = &bgx->pdev->dev; 12310bcb7d51SSunil Goutham struct lmac *lmac; 1232c41626ceSArnd Bergmann char str[27]; 123357aaf63cSSunil Goutham 1234fff37fdaSSunil Goutham if (!bgx->is_dlm && lmacid) 123557aaf63cSSunil Goutham return; 12360bcb7d51SSunil Goutham 12370bcb7d51SSunil Goutham lmac = &bgx->lmac[lmacid]; 123809de3917SSunil Goutham if (!bgx->is_dlm) 12390bcb7d51SSunil Goutham sprintf(str, "BGX%d QLM mode", bgx->bgx_id); 124057aaf63cSSunil Goutham else 1241fff37fdaSSunil Goutham sprintf(str, "BGX%d LMAC%d mode", bgx->bgx_id, lmacid); 12420bcb7d51SSunil Goutham 12430bcb7d51SSunil Goutham switch (lmac->lmac_type) { 12440bcb7d51SSunil Goutham case BGX_MODE_SGMII: 12450bcb7d51SSunil Goutham dev_info(dev, "%s: SGMII\n", (char *)str); 12460bcb7d51SSunil Goutham break; 12470bcb7d51SSunil Goutham case BGX_MODE_XAUI: 12480bcb7d51SSunil Goutham dev_info(dev, "%s: XAUI\n", (char *)str); 12490bcb7d51SSunil Goutham break; 12500bcb7d51SSunil Goutham case BGX_MODE_RXAUI: 12510bcb7d51SSunil Goutham dev_info(dev, "%s: RXAUI\n", (char *)str); 12520bcb7d51SSunil Goutham break; 12530bcb7d51SSunil Goutham case BGX_MODE_XFI: 12540bcb7d51SSunil Goutham if (!lmac->use_training) 12550bcb7d51SSunil Goutham dev_info(dev, "%s: XFI\n", (char *)str); 12560bcb7d51SSunil Goutham else 12570bcb7d51SSunil Goutham dev_info(dev, "%s: 10G_KR\n", (char *)str); 12580bcb7d51SSunil Goutham break; 12590bcb7d51SSunil Goutham case BGX_MODE_XLAUI: 12600bcb7d51SSunil Goutham if (!lmac->use_training) 12610bcb7d51SSunil Goutham dev_info(dev, "%s: XLAUI\n", (char *)str); 12620bcb7d51SSunil Goutham else 12630bcb7d51SSunil Goutham dev_info(dev, "%s: 40G_KR4\n", (char *)str); 12640bcb7d51SSunil Goutham break; 12653f8057cfSSunil Goutham case BGX_MODE_QSGMII: 12663f8057cfSSunil Goutham dev_info(dev, "%s: QSGMII\n", (char *)str); 12673f8057cfSSunil Goutham break; 12686465859aSSunil Goutham case BGX_MODE_RGMII: 12696465859aSSunil Goutham dev_info(dev, "%s: RGMII\n", (char *)str); 12706465859aSSunil Goutham break; 12713f8057cfSSunil Goutham case BGX_MODE_INVALID: 12723f8057cfSSunil Goutham /* Nothing to do */ 12733f8057cfSSunil Goutham break; 12740bcb7d51SSunil Goutham } 12750bcb7d51SSunil Goutham } 12760bcb7d51SSunil Goutham 12773f8057cfSSunil Goutham static void lmac_set_lane2sds(struct bgx *bgx, struct lmac *lmac) 12780bcb7d51SSunil Goutham { 12790bcb7d51SSunil Goutham switch (lmac->lmac_type) { 12800bcb7d51SSunil Goutham case BGX_MODE_SGMII: 12810bcb7d51SSunil Goutham case BGX_MODE_XFI: 12820bcb7d51SSunil Goutham lmac->lane_to_sds = lmac->lmacid; 12830bcb7d51SSunil Goutham break; 12840bcb7d51SSunil Goutham case BGX_MODE_XAUI: 12850bcb7d51SSunil Goutham case BGX_MODE_XLAUI: 12866465859aSSunil Goutham case BGX_MODE_RGMII: 12870bcb7d51SSunil Goutham lmac->lane_to_sds = 0xE4; 12880bcb7d51SSunil Goutham break; 12890bcb7d51SSunil Goutham case BGX_MODE_RXAUI: 12900bcb7d51SSunil Goutham lmac->lane_to_sds = (lmac->lmacid) ? 0xE : 0x4; 12910bcb7d51SSunil Goutham break; 12923f8057cfSSunil Goutham case BGX_MODE_QSGMII: 12933f8057cfSSunil Goutham /* There is no way to determine if DLM0/2 is QSGMII or 12943f8057cfSSunil Goutham * DLM1/3 is configured to QSGMII as bootloader will 12953f8057cfSSunil Goutham * configure all LMACs, so take whatever is configured 12963f8057cfSSunil Goutham * by low level firmware. 12973f8057cfSSunil Goutham */ 12983f8057cfSSunil Goutham lmac->lane_to_sds = bgx_get_lane2sds_cfg(bgx, lmac); 12993f8057cfSSunil Goutham break; 13000bcb7d51SSunil Goutham default: 13010bcb7d51SSunil Goutham lmac->lane_to_sds = 0; 13020bcb7d51SSunil Goutham break; 13030bcb7d51SSunil Goutham } 13040bcb7d51SSunil Goutham } 13050bcb7d51SSunil Goutham 13066465859aSSunil Goutham static void lmac_set_training(struct bgx *bgx, struct lmac *lmac, int lmacid) 13076465859aSSunil Goutham { 13086465859aSSunil Goutham if ((lmac->lmac_type != BGX_MODE_10G_KR) && 13096465859aSSunil Goutham (lmac->lmac_type != BGX_MODE_40G_KR)) { 13106465859aSSunil Goutham lmac->use_training = 0; 13116465859aSSunil Goutham return; 13126465859aSSunil Goutham } 13136465859aSSunil Goutham 13146465859aSSunil Goutham lmac->use_training = bgx_reg_read(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL) & 13156465859aSSunil Goutham SPU_PMD_CRTL_TRAIN_EN; 13166465859aSSunil Goutham } 13176465859aSSunil Goutham 13180bcb7d51SSunil Goutham static void bgx_set_lmac_config(struct bgx *bgx, u8 idx) 13190bcb7d51SSunil Goutham { 13200bcb7d51SSunil Goutham struct lmac *lmac; 13210bcb7d51SSunil Goutham u64 cmr_cfg; 132257aaf63cSSunil Goutham u8 lmac_type; 132357aaf63cSSunil Goutham u8 lane_to_sds; 13240bcb7d51SSunil Goutham 13250bcb7d51SSunil Goutham lmac = &bgx->lmac[idx]; 13264863dea3SSunil Goutham 132709de3917SSunil Goutham if (!bgx->is_dlm || bgx->is_rgx) { 13284863dea3SSunil Goutham /* Read LMAC0 type to figure out QLM mode 13294863dea3SSunil Goutham * This is configured by low level firmware 13304863dea3SSunil Goutham */ 13310bcb7d51SSunil Goutham cmr_cfg = bgx_reg_read(bgx, 0, BGX_CMRX_CFG); 13320bcb7d51SSunil Goutham lmac->lmac_type = (cmr_cfg >> 8) & 0x07; 13336465859aSSunil Goutham if (bgx->is_rgx) 13346465859aSSunil Goutham lmac->lmac_type = BGX_MODE_RGMII; 13356465859aSSunil Goutham lmac_set_training(bgx, lmac, 0); 13363f8057cfSSunil Goutham lmac_set_lane2sds(bgx, lmac); 133757aaf63cSSunil Goutham return; 133857aaf63cSSunil Goutham } 133957aaf63cSSunil Goutham 1340fff37fdaSSunil Goutham /* For DLMs or SLMs on 80/81/83xx so many lane configurations 1341fff37fdaSSunil Goutham * are possible and vary across boards. Also Kernel doesn't have 1342fff37fdaSSunil Goutham * any way to identify board type/info and since firmware does, 1343fff37fdaSSunil Goutham * just take lmac type and serdes lane config as is. 134457aaf63cSSunil Goutham */ 134557aaf63cSSunil Goutham cmr_cfg = bgx_reg_read(bgx, idx, BGX_CMRX_CFG); 134657aaf63cSSunil Goutham lmac_type = (u8)((cmr_cfg >> 8) & 0x07); 134757aaf63cSSunil Goutham lane_to_sds = (u8)(cmr_cfg & 0xFF); 1348fff37fdaSSunil Goutham /* Check if config is reset value */ 134957aaf63cSSunil Goutham if ((lmac_type == 0) && (lane_to_sds == 0xE4)) 135057aaf63cSSunil Goutham lmac->lmac_type = BGX_MODE_INVALID; 135157aaf63cSSunil Goutham else 135257aaf63cSSunil Goutham lmac->lmac_type = lmac_type; 1353fff37fdaSSunil Goutham lmac->lane_to_sds = lane_to_sds; 13546465859aSSunil Goutham lmac_set_training(bgx, lmac, lmac->lmacid); 13550bcb7d51SSunil Goutham } 13564863dea3SSunil Goutham 13570bcb7d51SSunil Goutham static void bgx_get_qlm_mode(struct bgx *bgx) 13580bcb7d51SSunil Goutham { 135957aaf63cSSunil Goutham struct lmac *lmac; 13600bcb7d51SSunil Goutham u8 idx; 13610bcb7d51SSunil Goutham 136257aaf63cSSunil Goutham /* Init all LMAC's type to invalid */ 13636465859aSSunil Goutham for (idx = 0; idx < bgx->max_lmac; idx++) { 136457aaf63cSSunil Goutham lmac = &bgx->lmac[idx]; 136557aaf63cSSunil Goutham lmac->lmacid = idx; 13666465859aSSunil Goutham lmac->lmac_type = BGX_MODE_INVALID; 13676465859aSSunil Goutham lmac->use_training = false; 136857aaf63cSSunil Goutham } 136957aaf63cSSunil Goutham 13700bcb7d51SSunil Goutham /* It is assumed that low level firmware sets this value */ 13710bcb7d51SSunil Goutham bgx->lmac_count = bgx_reg_read(bgx, 0, BGX_CMR_RX_LMACS) & 0x7; 13726465859aSSunil Goutham if (bgx->lmac_count > bgx->max_lmac) 13736465859aSSunil Goutham bgx->lmac_count = bgx->max_lmac; 13740bcb7d51SSunil Goutham 137557aaf63cSSunil Goutham for (idx = 0; idx < bgx->lmac_count; idx++) { 1376fff37fdaSSunil Goutham bgx_set_lmac_config(bgx, idx); 1377fff37fdaSSunil Goutham bgx_print_qlm_mode(bgx, idx); 137857aaf63cSSunil Goutham } 13794863dea3SSunil Goutham } 13804863dea3SSunil Goutham 138146b903a0SDavid Daney #ifdef CONFIG_ACPI 138246b903a0SDavid Daney 13831d82efacSRobert Richter static int acpi_get_mac_address(struct device *dev, struct acpi_device *adev, 13841d82efacSRobert Richter u8 *dst) 138546b903a0SDavid Daney { 138646b903a0SDavid Daney u8 mac[ETH_ALEN]; 138746b903a0SDavid Daney int ret; 138846b903a0SDavid Daney 138946b903a0SDavid Daney ret = fwnode_property_read_u8_array(acpi_fwnode_handle(adev), 139046b903a0SDavid Daney "mac-address", mac, ETH_ALEN); 139146b903a0SDavid Daney if (ret) 139246b903a0SDavid Daney goto out; 139346b903a0SDavid Daney 139446b903a0SDavid Daney if (!is_valid_ether_addr(mac)) { 13951d82efacSRobert Richter dev_err(dev, "MAC address invalid: %pM\n", mac); 139646b903a0SDavid Daney ret = -EINVAL; 139746b903a0SDavid Daney goto out; 139846b903a0SDavid Daney } 139946b903a0SDavid Daney 14001d82efacSRobert Richter dev_info(dev, "MAC address set to: %pM\n", mac); 14011d82efacSRobert Richter 140246b903a0SDavid Daney memcpy(dst, mac, ETH_ALEN); 140346b903a0SDavid Daney out: 140446b903a0SDavid Daney return ret; 140546b903a0SDavid Daney } 140646b903a0SDavid Daney 140746b903a0SDavid Daney /* Currently only sets the MAC address. */ 140846b903a0SDavid Daney static acpi_status bgx_acpi_register_phy(acpi_handle handle, 140946b903a0SDavid Daney u32 lvl, void *context, void **rv) 141046b903a0SDavid Daney { 141146b903a0SDavid Daney struct bgx *bgx = context; 14121d82efacSRobert Richter struct device *dev = &bgx->pdev->dev; 141346b903a0SDavid Daney struct acpi_device *adev; 141446b903a0SDavid Daney 141546b903a0SDavid Daney if (acpi_bus_get_device(handle, &adev)) 141646b903a0SDavid Daney goto out; 141746b903a0SDavid Daney 14187aa48655SVadim Lomovtsev acpi_get_mac_address(dev, adev, bgx->lmac[bgx->acpi_lmac_idx].mac); 141946b903a0SDavid Daney 14207aa48655SVadim Lomovtsev SET_NETDEV_DEV(&bgx->lmac[bgx->acpi_lmac_idx].netdev, dev); 142146b903a0SDavid Daney 14227aa48655SVadim Lomovtsev bgx->lmac[bgx->acpi_lmac_idx].lmacid = bgx->acpi_lmac_idx; 14237aa48655SVadim Lomovtsev bgx->acpi_lmac_idx++; /* move to next LMAC */ 142446b903a0SDavid Daney out: 142546b903a0SDavid Daney return AE_OK; 142646b903a0SDavid Daney } 142746b903a0SDavid Daney 142846b903a0SDavid Daney static acpi_status bgx_acpi_match_id(acpi_handle handle, u32 lvl, 142946b903a0SDavid Daney void *context, void **ret_val) 143046b903a0SDavid Daney { 143146b903a0SDavid Daney struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL }; 143246b903a0SDavid Daney struct bgx *bgx = context; 143346b903a0SDavid Daney char bgx_sel[5]; 143446b903a0SDavid Daney 143546b903a0SDavid Daney snprintf(bgx_sel, 5, "BGX%d", bgx->bgx_id); 143646b903a0SDavid Daney if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &string))) { 143746b903a0SDavid Daney pr_warn("Invalid link device\n"); 143846b903a0SDavid Daney return AE_OK; 143946b903a0SDavid Daney } 144046b903a0SDavid Daney 144146b903a0SDavid Daney if (strncmp(string.pointer, bgx_sel, 4)) 144246b903a0SDavid Daney return AE_OK; 144346b903a0SDavid Daney 144446b903a0SDavid Daney acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, 144546b903a0SDavid Daney bgx_acpi_register_phy, NULL, bgx, NULL); 144646b903a0SDavid Daney 144746b903a0SDavid Daney kfree(string.pointer); 144846b903a0SDavid Daney return AE_CTRL_TERMINATE; 144946b903a0SDavid Daney } 145046b903a0SDavid Daney 145146b903a0SDavid Daney static int bgx_init_acpi_phy(struct bgx *bgx) 145246b903a0SDavid Daney { 145346b903a0SDavid Daney acpi_get_devices(NULL, bgx_acpi_match_id, bgx, (void **)NULL); 145446b903a0SDavid Daney return 0; 145546b903a0SDavid Daney } 145646b903a0SDavid Daney 145746b903a0SDavid Daney #else 145846b903a0SDavid Daney 145946b903a0SDavid Daney static int bgx_init_acpi_phy(struct bgx *bgx) 146046b903a0SDavid Daney { 146146b903a0SDavid Daney return -ENODEV; 146246b903a0SDavid Daney } 146346b903a0SDavid Daney 146446b903a0SDavid Daney #endif /* CONFIG_ACPI */ 146546b903a0SDavid Daney 1466de387e11SRobert Richter #if IS_ENABLED(CONFIG_OF_MDIO) 1467de387e11SRobert Richter 1468de387e11SRobert Richter static int bgx_init_of_phy(struct bgx *bgx) 14694863dea3SSunil Goutham { 1470eee326fdSDavid Daney struct fwnode_handle *fwn; 1471b7d3e3d3SDavid Daney struct device_node *node = NULL; 14724863dea3SSunil Goutham u8 lmac = 0; 14734863dea3SSunil Goutham 1474eee326fdSDavid Daney device_for_each_child_node(&bgx->pdev->dev, fwn) { 14755fc7cf17SDavid Daney struct phy_device *pd; 1476eee326fdSDavid Daney struct device_node *phy_np; 1477b7d3e3d3SDavid Daney const char *mac; 1478de387e11SRobert Richter 14795fc7cf17SDavid Daney /* Should always be an OF node. But if it is not, we 14805fc7cf17SDavid Daney * cannot handle it, so exit the loop. 1481eee326fdSDavid Daney */ 1482b7d3e3d3SDavid Daney node = to_of_node(fwn); 1483eee326fdSDavid Daney if (!node) 1484eee326fdSDavid Daney break; 1485eee326fdSDavid Daney 1486eee326fdSDavid Daney mac = of_get_mac_address(node); 14874863dea3SSunil Goutham if (mac) 14884863dea3SSunil Goutham ether_addr_copy(bgx->lmac[lmac].mac, mac); 14894863dea3SSunil Goutham 14904863dea3SSunil Goutham SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev); 14914863dea3SSunil Goutham bgx->lmac[lmac].lmacid = lmac; 14925fc7cf17SDavid Daney 14935fc7cf17SDavid Daney phy_np = of_parse_phandle(node, "phy-handle", 0); 14945fc7cf17SDavid Daney /* If there is no phy or defective firmware presents 14955fc7cf17SDavid Daney * this cortina phy, for which there is no driver 14965fc7cf17SDavid Daney * support, ignore it. 14975fc7cf17SDavid Daney */ 14985fc7cf17SDavid Daney if (phy_np && 14995fc7cf17SDavid Daney !of_device_is_compatible(phy_np, "cortina,cs4223-slice")) { 15005fc7cf17SDavid Daney /* Wait until the phy drivers are available */ 15015fc7cf17SDavid Daney pd = of_phy_find_device(phy_np); 15025fc7cf17SDavid Daney if (!pd) 1503b7d3e3d3SDavid Daney goto defer; 15045fc7cf17SDavid Daney bgx->lmac[lmac].phydev = pd; 15055fc7cf17SDavid Daney } 15065fc7cf17SDavid Daney 15074863dea3SSunil Goutham lmac++; 15086465859aSSunil Goutham if (lmac == bgx->max_lmac) { 150965c66af6SDavid Daney of_node_put(node); 15104863dea3SSunil Goutham break; 15114863dea3SSunil Goutham } 151265c66af6SDavid Daney } 1513de387e11SRobert Richter return 0; 1514b7d3e3d3SDavid Daney 1515b7d3e3d3SDavid Daney defer: 1516b7d3e3d3SDavid Daney /* We are bailing out, try not to leak device reference counts 1517b7d3e3d3SDavid Daney * for phy devices we may have already found. 1518b7d3e3d3SDavid Daney */ 1519b7d3e3d3SDavid Daney while (lmac) { 1520b7d3e3d3SDavid Daney if (bgx->lmac[lmac].phydev) { 1521b7d3e3d3SDavid Daney put_device(&bgx->lmac[lmac].phydev->mdio.dev); 1522b7d3e3d3SDavid Daney bgx->lmac[lmac].phydev = NULL; 1523b7d3e3d3SDavid Daney } 1524b7d3e3d3SDavid Daney lmac--; 1525b7d3e3d3SDavid Daney } 1526b7d3e3d3SDavid Daney of_node_put(node); 1527b7d3e3d3SDavid Daney return -EPROBE_DEFER; 1528de387e11SRobert Richter } 1529de387e11SRobert Richter 1530de387e11SRobert Richter #else 1531de387e11SRobert Richter 1532de387e11SRobert Richter static int bgx_init_of_phy(struct bgx *bgx) 1533de387e11SRobert Richter { 1534de387e11SRobert Richter return -ENODEV; 1535de387e11SRobert Richter } 1536de387e11SRobert Richter 1537de387e11SRobert Richter #endif /* CONFIG_OF_MDIO */ 1538de387e11SRobert Richter 1539de387e11SRobert Richter static int bgx_init_phy(struct bgx *bgx) 1540de387e11SRobert Richter { 154146b903a0SDavid Daney if (!acpi_disabled) 154246b903a0SDavid Daney return bgx_init_acpi_phy(bgx); 154346b903a0SDavid Daney 1544de387e11SRobert Richter return bgx_init_of_phy(bgx); 15454863dea3SSunil Goutham } 15464863dea3SSunil Goutham 15474863dea3SSunil Goutham static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 15484863dea3SSunil Goutham { 15494863dea3SSunil Goutham int err; 15504863dea3SSunil Goutham struct device *dev = &pdev->dev; 15514863dea3SSunil Goutham struct bgx *bgx = NULL; 15524863dea3SSunil Goutham u8 lmac; 155357aaf63cSSunil Goutham u16 sdevid; 15544863dea3SSunil Goutham 15554863dea3SSunil Goutham bgx = devm_kzalloc(dev, sizeof(*bgx), GFP_KERNEL); 15564863dea3SSunil Goutham if (!bgx) 15574863dea3SSunil Goutham return -ENOMEM; 15584863dea3SSunil Goutham bgx->pdev = pdev; 15594863dea3SSunil Goutham 15604863dea3SSunil Goutham pci_set_drvdata(pdev, bgx); 15614863dea3SSunil Goutham 15624863dea3SSunil Goutham err = pci_enable_device(pdev); 15634863dea3SSunil Goutham if (err) { 15644863dea3SSunil Goutham dev_err(dev, "Failed to enable PCI device\n"); 15654863dea3SSunil Goutham pci_set_drvdata(pdev, NULL); 15664863dea3SSunil Goutham return err; 15674863dea3SSunil Goutham } 15684863dea3SSunil Goutham 15694863dea3SSunil Goutham err = pci_request_regions(pdev, DRV_NAME); 15704863dea3SSunil Goutham if (err) { 15714863dea3SSunil Goutham dev_err(dev, "PCI request regions failed 0x%x\n", err); 15724863dea3SSunil Goutham goto err_disable_device; 15734863dea3SSunil Goutham } 15744863dea3SSunil Goutham 15754863dea3SSunil Goutham /* MAP configuration registers */ 15764863dea3SSunil Goutham bgx->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); 15774863dea3SSunil Goutham if (!bgx->reg_base) { 15784863dea3SSunil Goutham dev_err(dev, "BGX: Cannot map CSR memory space, aborting\n"); 15794863dea3SSunil Goutham err = -ENOMEM; 15804863dea3SSunil Goutham goto err_release_regions; 15814863dea3SSunil Goutham } 1582d768b678SRobert Richter 158378aacb6fSSunil Goutham set_max_bgx_per_node(pdev); 158478aacb6fSSunil Goutham 15856465859aSSunil Goutham pci_read_config_word(pdev, PCI_DEVICE_ID, &sdevid); 15866465859aSSunil Goutham if (sdevid != PCI_DEVICE_ID_THUNDER_RGX) { 1587612e94bdSRadha Mohan Chintakuntla bgx->bgx_id = (pci_resource_start(pdev, 1588612e94bdSRadha Mohan Chintakuntla PCI_CFG_REG_BAR_NUM) >> 24) & BGX_ID_MASK; 158978aacb6fSSunil Goutham bgx->bgx_id += nic_get_node_id(pdev) * max_bgx_per_node; 15906465859aSSunil Goutham bgx->max_lmac = MAX_LMAC_PER_BGX; 15914863dea3SSunil Goutham bgx_vnic[bgx->bgx_id] = bgx; 15926465859aSSunil Goutham } else { 15936465859aSSunil Goutham bgx->is_rgx = true; 15946465859aSSunil Goutham bgx->max_lmac = 1; 15956465859aSSunil Goutham bgx->bgx_id = MAX_BGX_PER_CN81XX - 1; 15966465859aSSunil Goutham bgx_vnic[bgx->bgx_id] = bgx; 15976465859aSSunil Goutham xcv_init_hw(); 15986465859aSSunil Goutham } 15996465859aSSunil Goutham 160009de3917SSunil Goutham /* On 81xx all are DLMs and on 83xx there are 3 BGX QLMs and one 160109de3917SSunil Goutham * BGX i.e BGX2 can be split across 2 DLMs. 160209de3917SSunil Goutham */ 160309de3917SSunil Goutham pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &sdevid); 160409de3917SSunil Goutham if ((sdevid == PCI_SUBSYS_DEVID_81XX_BGX) || 160509de3917SSunil Goutham ((sdevid == PCI_SUBSYS_DEVID_83XX_BGX) && (bgx->bgx_id == 2))) 160609de3917SSunil Goutham bgx->is_dlm = true; 160709de3917SSunil Goutham 16084863dea3SSunil Goutham bgx_get_qlm_mode(bgx); 16094863dea3SSunil Goutham 1610de387e11SRobert Richter err = bgx_init_phy(bgx); 1611de387e11SRobert Richter if (err) 1612de387e11SRobert Richter goto err_enable; 16134863dea3SSunil Goutham 16144863dea3SSunil Goutham bgx_init_hw(bgx); 16154863dea3SSunil Goutham 16164863dea3SSunil Goutham /* Enable all LMACs */ 16174863dea3SSunil Goutham for (lmac = 0; lmac < bgx->lmac_count; lmac++) { 16184863dea3SSunil Goutham err = bgx_lmac_enable(bgx, lmac); 16194863dea3SSunil Goutham if (err) { 16204863dea3SSunil Goutham dev_err(dev, "BGX%d failed to enable lmac%d\n", 16214863dea3SSunil Goutham bgx->bgx_id, lmac); 162257aaf63cSSunil Goutham while (lmac) 162357aaf63cSSunil Goutham bgx_lmac_disable(bgx, --lmac); 16244863dea3SSunil Goutham goto err_enable; 16254863dea3SSunil Goutham } 16264863dea3SSunil Goutham } 16274863dea3SSunil Goutham 16284863dea3SSunil Goutham return 0; 16294863dea3SSunil Goutham 16304863dea3SSunil Goutham err_enable: 16314863dea3SSunil Goutham bgx_vnic[bgx->bgx_id] = NULL; 16324863dea3SSunil Goutham err_release_regions: 16334863dea3SSunil Goutham pci_release_regions(pdev); 16344863dea3SSunil Goutham err_disable_device: 16354863dea3SSunil Goutham pci_disable_device(pdev); 16364863dea3SSunil Goutham pci_set_drvdata(pdev, NULL); 16374863dea3SSunil Goutham return err; 16384863dea3SSunil Goutham } 16394863dea3SSunil Goutham 16404863dea3SSunil Goutham static void bgx_remove(struct pci_dev *pdev) 16414863dea3SSunil Goutham { 16424863dea3SSunil Goutham struct bgx *bgx = pci_get_drvdata(pdev); 16434863dea3SSunil Goutham u8 lmac; 16444863dea3SSunil Goutham 16454863dea3SSunil Goutham /* Disable all LMACs */ 16464863dea3SSunil Goutham for (lmac = 0; lmac < bgx->lmac_count; lmac++) 16474863dea3SSunil Goutham bgx_lmac_disable(bgx, lmac); 16484863dea3SSunil Goutham 16494863dea3SSunil Goutham bgx_vnic[bgx->bgx_id] = NULL; 16504863dea3SSunil Goutham pci_release_regions(pdev); 16514863dea3SSunil Goutham pci_disable_device(pdev); 16524863dea3SSunil Goutham pci_set_drvdata(pdev, NULL); 16534863dea3SSunil Goutham } 16544863dea3SSunil Goutham 16554863dea3SSunil Goutham static struct pci_driver bgx_driver = { 16564863dea3SSunil Goutham .name = DRV_NAME, 16574863dea3SSunil Goutham .id_table = bgx_id_table, 16584863dea3SSunil Goutham .probe = bgx_probe, 16594863dea3SSunil Goutham .remove = bgx_remove, 16604863dea3SSunil Goutham }; 16614863dea3SSunil Goutham 16624863dea3SSunil Goutham static int __init bgx_init_module(void) 16634863dea3SSunil Goutham { 16644863dea3SSunil Goutham pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION); 16654863dea3SSunil Goutham 16664863dea3SSunil Goutham return pci_register_driver(&bgx_driver); 16674863dea3SSunil Goutham } 16684863dea3SSunil Goutham 16694863dea3SSunil Goutham static void __exit bgx_cleanup_module(void) 16704863dea3SSunil Goutham { 16714863dea3SSunil Goutham pci_unregister_driver(&bgx_driver); 16724863dea3SSunil Goutham } 16734863dea3SSunil Goutham 16744863dea3SSunil Goutham module_init(bgx_init_module); 16754863dea3SSunil Goutham module_exit(bgx_cleanup_module); 1676