This introduces support for the NC-SI protocol, modelled as a phy driver for other ethernet drivers to consume.

NC-SI (Network Controller Sideband Interface) is a protocol to manage a sideband connection to a proper network interface, for example a BMC (Baseboard Management Controller) sharing the NIC of the host system. Probing and configuration occurs by communicating with the "remote" NIC via NC-SI control frames (Ethernet header 0x88f8).

This implementation is roughly based on the upstream Linux implementation[0], with a reduced feature set and an emphasis on getting a link up as fast as possible rather than probing the full possible topology of the bus. The current phy model relies on the network being "up", sending NC-SI command frames via net_send_packet() and receiving them from the net_loop() loop (added in a following patch).

The ncsi-pkt.h header[1] is copied from the Linux kernel for consistent field definitions.

[0]: https://github.com/torvalds/linux/tree/master/net/ncsi [1]: https://github.com/torvalds/linux/blob/master/net/ncsi/ncsi-pkt.h

Signed-off-by: Samuel Mendoza-Jonas sam@mendozajonas.com --- v2: - Fix endianess issue when setting MAC address - Make checksum offsets easier to read - Instantiate per-phy ncsi_priv structures - Used update ncsi-pkt.h version to include SPDX header

drivers/net/phy/Kconfig | 4 + drivers/net/phy/Makefile | 1 + drivers/net/phy/ncsi.c | 896 +++++++++++++++++++++++++++++++++++++++ include/net.h | 1 + include/net/ncsi-pkt.h | 442 +++++++++++++++++++ include/net/ncsi.h | 14 + include/phy.h | 1 + 7 files changed, 1359 insertions(+) create mode 100644 drivers/net/phy/ncsi.c create mode 100644 include/net/ncsi-pkt.h create mode 100644 include/net/ncsi.h

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 2a3da068c9..35d96ab34b 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -238,4 +238,8 @@ config PHY_FIXED on, the link is always up with fixed speed and fixed duplex-setting. More information: doc/device-tree-bindings/net/fixed-link.txt

+config PHY_NCSI + bool "NC-SI based PHY" + depends on DM_ETH + endif #PHYLIB diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 555da83630..32a8409a85 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -30,3 +30,4 @@ obj-$(CONFIG_PHY_XILINX) += xilinx_phy.o obj-$(CONFIG_PHY_VITESSE) += vitesse.o obj-$(CONFIG_PHY_MSCC) += mscc.o obj-$(CONFIG_PHY_FIXED) += fixed.o +obj-$(CONFIG_PHY_NCSI) += ncsi.o diff --git a/drivers/net/phy/ncsi.c b/drivers/net/phy/ncsi.c new file mode 100644 index 0000000000..4d0ea48b04 --- /dev/null +++ b/drivers/net/phy/ncsi.c @@ -0,0 +1,896 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * NC-SI protocol configuration + * + * Copyright (C) 2019, IBM Corporation. + */ + +#include <common.h> +#include <malloc.h> +#include <phy.h> +#include <net/ncsi.h> +#include <net/ncsi-pkt.h> +#include <asm/unaligned.h> + +#define NCSI_PACKAGE_MAX 8 +#define NCSI_CHANNEL_MAX 31 + +#define NCSI_PACKAGE_SHIFT 5 +#define NCSI_PACKAGE_INDEX(c) (((c) >> NCSI_PACKAGE_SHIFT) & 0x7) +#define NCSI_RESERVED_CHANNEL 0x1f +#define NCSI_CHANNEL_INDEX(c) ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1)) +#define NCSI_TO_CHANNEL(p, c) (((p) << NCSI_PACKAGE_SHIFT) | (c)) + +#define NCSI_PKT_REVISION 0x01 + +#define NCSI_CAP_GENERIC_MASK 0x7f +#define NCSI_CAP_BC_MASK 0x0f +#define NCSI_CAP_MC_MASK 0x3f +#define NCSI_CAP_AEN_MASK 0x07 +#define NCSI_CAP_VLAN_MASK 0x07 + +static void ncsi_send_ebf(unsigned int np, unsigned int nc); +static void ncsi_send_ae(unsigned int np, unsigned int nc); +static void ncsi_send_gls(unsigned int np, unsigned int nc); +static int ncsi_send_command(unsigned int np, unsigned int nc, unsigned int cmd, + uchar *payload, int len, bool wait); + +struct ncsi_channel { + unsigned int id; + bool has_link; + + /* capabilities */ + u32 cap_generic; + u32 cap_bc; + u32 cap_mc; + u32 cap_buffer; + u32 cap_aen; + u32 cap_vlan; + + /* version information */ + struct { + u32 version; /* Supported BCD encoded NCSI version */ + u32 alpha2; /* Supported BCD encoded NCSI version */ + u8 fw_name[12]; /* Firmware name string */ + u32 fw_version; /* Firmware version */ + u16 pci_ids[4]; /* PCI identification */ + u32 mf_id; /* Manufacture ID */ + } version; + +}; + +struct ncsi_package { + unsigned int id; + unsigned int n_channels; + struct ncsi_channel *channels; +}; + +struct ncsi { + enum { + NCSI_PROBE_PACKAGE_SP, + NCSI_PROBE_PACKAGE_DP, + NCSI_PROBE_CHANNEL_SP, + NCSI_PROBE_CHANNEL, + NCSI_CONFIG, + } state; + + unsigned int pending_requests; + unsigned int requests[256]; + unsigned int last_request; + + unsigned int current_package; + unsigned int current_channel; + + unsigned int n_packages; + struct ncsi_package *packages; +}; + +struct ncsi *ncsi_priv; + +bool ncsi_active(void) +{ + unsigned int np, nc; + + if (!ncsi_priv) + return false; + + np = ncsi_priv->current_package; + nc = ncsi_priv->current_channel; + + if (ncsi_priv->state != NCSI_CONFIG) + return false; + + return np < NCSI_PACKAGE_MAX && nc < NCSI_CHANNEL_MAX && + ncsi_priv->packages[np].channels[nc].has_link; +} + +static unsigned int cmd_payload(int cmd) +{ + switch (cmd) { + case NCSI_PKT_CMD_CIS: + return 0; + case NCSI_PKT_CMD_SP: + return 4; + case NCSI_PKT_CMD_DP: + return 0; + case NCSI_PKT_CMD_EC: + return 0; + case NCSI_PKT_CMD_DC: + return 4; + case NCSI_PKT_CMD_RC: + return 4; + case NCSI_PKT_CMD_ECNT: + return 0; + case NCSI_PKT_CMD_DCNT: + return 0; + case NCSI_PKT_CMD_AE: + return 8; + case NCSI_PKT_CMD_SL: + return 8; + case NCSI_PKT_CMD_GLS: + return 0; + case NCSI_PKT_CMD_SVF: + return 8; + case NCSI_PKT_CMD_EV: + return 4; + case NCSI_PKT_CMD_DV: + return 0; + case NCSI_PKT_CMD_SMA: + return 8; + case NCSI_PKT_CMD_EBF: + return 4; + case NCSI_PKT_CMD_DBF: + return 0; + case NCSI_PKT_CMD_EGMF: + return 4; + case NCSI_PKT_CMD_DGMF: + return 0; + case NCSI_PKT_CMD_SNFC: + return 4; + case NCSI_PKT_CMD_GVI: + return 0; + case NCSI_PKT_CMD_GC: + return 0; + case NCSI_PKT_CMD_GP: + return 0; + case NCSI_PKT_CMD_GCPS: + return 0; + case NCSI_PKT_CMD_GNS: + return 0; + case NCSI_PKT_CMD_GNPTS: + return 0; + case NCSI_PKT_CMD_GPS: + return 0; + default: + printf("NCSI: Unknown command 0x%02x\n", cmd); + return 0; + } +} + +static u32 ncsi_calculate_checksum(unsigned char *data, int len) +{ + u32 checksum = 0; + int i; + + for (i = 0; i < len; i += 2) + checksum += (((u32)data[i] << 8) | data[i + 1]); + + checksum = (~checksum + 1); + return checksum; +} + +static int ncsi_validate_rsp(struct ncsi_rsp_pkt *pkt, int payload) +{ + struct ncsi_rsp_pkt_hdr *hdr = &pkt->rsp; + u32 checksum, c_offset; + __be32 pchecksum; + + if (hdr->common.revision != 1) { + printf("NCSI: 0x%02x response has unsupported revision 0x%x\n", + hdr->common.type, hdr->common.revision); + return -1; + } + + if (hdr->code != 0) { + printf("NCSI: 0x%02x response returns error %d\n", + hdr->common.type, __be16_to_cpu(hdr->code)); + if (ntohs(hdr->reason) == 0x05) + printf("(Invalid command length)\n"); + return -1; + } + + if (ntohs(hdr->common.length) != payload) { + printf("NCSI: 0x%02x response has incorrect length %d\n", + hdr->common.type, hdr->common.length); + return -1; + } + + c_offset = sizeof(struct ncsi_rsp_pkt_hdr) + payload - sizeof(checksum); + pchecksum = get_unaligned_be32((void *)hdr + c_offset); + if (pchecksum != 0) { + checksum = ncsi_calculate_checksum((unsigned char *)hdr, + c_offset); + if (pchecksum != checksum) { + printf("NCSI: 0x%02x response has invalid checksum\n", + hdr->common.type); + return -1; + } + } + + return 0; +} + +static void ncsi_rsp_ec(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + if (ncsi_priv->packages[np].channels[nc].cap_aen != 0) + ncsi_send_ae(np, nc); + /* else, done */ +} + +static void ncsi_rsp_ecnt(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + ncsi_send_command(np, nc, NCSI_PKT_CMD_EC, NULL, 0, true); +} + +static void ncsi_rsp_ebf(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + ncsi_send_command(np, nc, NCSI_PKT_CMD_ECNT, NULL, 0, true); +} + +static void ncsi_rsp_sma(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + ncsi_send_ebf(np, nc); +} + +static void ncsi_rsp_gc(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_gc_pkt *gc = (struct ncsi_rsp_gc_pkt *)pkt; + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gc->rsp; + struct ncsi_channel *c; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + if (np >= ncsi_priv->n_packages || + nc >= ncsi_priv->packages[np].n_channels) { + printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n", + np, nc); + return; + } + + c = &ncsi_priv->packages[np].channels[nc]; + c->cap_generic = ntohl(gc->cap) & NCSI_CAP_GENERIC_MASK; + c->cap_bc = ntohl(gc->bc_cap) & NCSI_CAP_BC_MASK; + c->cap_mc = ntohl(gc->mc_cap) & NCSI_CAP_MC_MASK; + c->cap_aen = ntohl(gc->aen_cap) & NCSI_CAP_AEN_MASK; + c->cap_vlan = ntohl(gc->vlan_mode) & NCSI_CAP_VLAN_MASK; + + /* End of probe for this channel */ +} + +static void ncsi_rsp_gvi(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_gvi_pkt *gvi = (struct ncsi_rsp_gvi_pkt *)pkt; + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gvi->rsp; + struct ncsi_channel *c; + unsigned int np, nc, i; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + if (np >= ncsi_priv->n_packages || + nc >= ncsi_priv->packages[np].n_channels) { + printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n", + np, nc); + return; + } + + c = &ncsi_priv->packages[np].channels[nc]; + c->version.version = get_unaligned_be32(&gvi->ncsi_version); + c->version.alpha2 = gvi->alpha2; + memcpy(c->version.fw_name, gvi->fw_name, sizeof(c->version.fw_name)); + c->version.fw_version = get_unaligned_be32(&gvi->fw_version); + for (i = 0; i < ARRAY_SIZE(c->version.pci_ids); i++) + c->version.pci_ids[i] = get_unaligned_be16(gvi->pci_ids + i); + c->version.mf_id = get_unaligned_be32(&gvi->mf_id); + + if (ncsi_priv->state == NCSI_PROBE_CHANNEL) + ncsi_send_command(np, nc, NCSI_PKT_CMD_GC, NULL, 0, true); +} + +static void ncsi_rsp_gls(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_gls_pkt *gls = (struct ncsi_rsp_gls_pkt *)pkt; + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)&gls->rsp; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + if (np >= ncsi_priv->n_packages || + nc >= ncsi_priv->packages[np].n_channels) { + printf("NCSI: Invalid package / channel (0x%02x, 0x%02x)\n", + np, nc); + return; + } + + ncsi_priv->packages[np].channels[nc].has_link = + !!(get_unaligned_be32(&gls->status)); + + if (ncsi_priv->state == NCSI_PROBE_CHANNEL) + ncsi_send_command(np, nc, NCSI_PKT_CMD_GVI, NULL, 0, true); +} + +static void ncsi_rsp_cis(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt; + struct ncsi_package *package; + unsigned int np, nc; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + nc = NCSI_CHANNEL_INDEX(rsp->common.channel); + + if (np >= ncsi_priv->n_packages) { + printf("NCSI: Mystery package 0x%02x from CIS\n", np); + return; + } + + package = &ncsi_priv->packages[np]; + + if (nc < package->n_channels) { + /* + * This is fine in general but in the current design we + * don't send CIS commands to known channels. + */ + debug("NCSI: Duplicate channel 0x%02x\n", nc); + return; + } + + package->channels = realloc(package->channels, + sizeof(struct ncsi_channel) * + (package->n_channels + 1)); + if (!package->channels) { + printf("NCSI: Could not allocate memory for new channel\n"); + return; + } + + debug("NCSI: New channel 0x%02x\n", nc); + + package->channels[nc].id = nc; + package->channels[nc].has_link = false; + package->n_channels++; + + ncsi_send_gls(np, nc); +} + +static void ncsi_rsp_dp(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt; + unsigned int np; + + /* No action needed */ + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + if (np >= ncsi_priv->n_packages) + debug("NCSI: DP response from unknown package %d\n", np); +} + +static void ncsi_rsp_sp(struct ncsi_rsp_pkt *pkt) +{ + struct ncsi_rsp_pkt_hdr *rsp = (struct ncsi_rsp_pkt_hdr *)pkt; + unsigned int np; + + np = NCSI_PACKAGE_INDEX(rsp->common.channel); + + if (np < ncsi_priv->n_packages) { + /* Already know about this package */ + debug("NCSI: package 0x%02x selected\n", np); + return; + } + + debug("NCSI: adding new package %d\n", np); + + ncsi_priv->packages = realloc(ncsi_priv->packages, + sizeof(struct ncsi_package) * + (ncsi_priv->n_packages + 1)); + if (!ncsi_priv->packages) { + printf("NCSI: could not allocate memory for new package\n"); + return; + } + + ncsi_priv->packages[np].id = np; + ncsi_priv->packages[np].n_channels = 0; + ncsi_priv->packages[np].channels = NULL; + ncsi_priv->n_packages++; +} + +static void ncsi_update_state(struct ncsi_rsp_pkt_hdr *nh) +{ + bool timeout = !nh; + int np, nc; + + switch (ncsi_priv->state) { + case NCSI_PROBE_PACKAGE_SP: + if (!timeout && + ncsi_priv->current_package + 1 < NCSI_PACKAGE_MAX) { + ncsi_priv->current_package++; + } else { + ncsi_priv->state = NCSI_PROBE_PACKAGE_DP; + ncsi_priv->current_package = 0; + } + return ncsi_probe_packages(); + case NCSI_PROBE_PACKAGE_DP: + if (ncsi_priv->current_package + 1 < ncsi_priv->n_packages && + !timeout) { + ncsi_priv->current_package++; + } else { + if (!ncsi_priv->n_packages) { + printf("NCSI: no packages found\n"); + net_set_state(NETLOOP_FAIL); + return; + } + printf("NCSI: probing channels\n"); + ncsi_priv->state = NCSI_PROBE_CHANNEL_SP; + ncsi_priv->current_package = 0; + ncsi_priv->current_channel = 0; + } + return ncsi_probe_packages(); + case NCSI_PROBE_CHANNEL_SP: + if (!timeout && nh->common.type == NCSI_PKT_RSP_SP) { + ncsi_priv->state = NCSI_PROBE_CHANNEL; + return ncsi_probe_packages(); + } + printf("NCSI: failed to select package 0x%0x2 or timeout\n", + ncsi_priv->current_package); + net_set_state(NETLOOP_FAIL); + break; + case NCSI_PROBE_CHANNEL: + // TODO only does package 0 for now + if (ncsi_priv->pending_requests == 0) { + np = ncsi_priv->current_package; + nc = ncsi_priv->current_channel; + + /* Configure first channel that has link */ + if (ncsi_priv->packages[np].channels[nc].has_link) { + ncsi_priv->state = NCSI_CONFIG; + } else if (ncsi_priv->current_channel + 1 < + NCSI_CHANNEL_MAX) { + ncsi_priv->current_channel++; + } else { + // XXX As above only package 0 + printf("NCSI: no channel found with link\n"); + net_set_state(NETLOOP_FAIL); + return; + } + return ncsi_probe_packages(); + } + break; + case NCSI_CONFIG: + if (ncsi_priv->pending_requests == 0) { + printf("NCSI: configuration done!\n"); + net_set_state(NETLOOP_SUCCESS); + } else if (timeout) { + printf("NCSI: timeout during configure\n"); + net_set_state(NETLOOP_FAIL); + } + break; + default: + printf("NCSI: something went very wrong, nevermind\n"); + net_set_state(NETLOOP_FAIL); + break; + } +} + +static void ncsi_timeout_handler(void) +{ + if (ncsi_priv->pending_requests) + ncsi_priv->pending_requests--; + + ncsi_update_state(NULL); +} + +static int ncsi_send_command(unsigned int np, unsigned int nc, unsigned int cmd, + uchar *payload, int len, bool wait) +{ + struct ncsi_pkt_hdr *hdr; + __be32 *pchecksum; + int eth_hdr_size; + u32 checksum; + uchar *pkt, *start; + int final_len; + + pkt = calloc(1, PKTSIZE_ALIGN + PKTALIGN); + if (!pkt) + return -ENOMEM; + start = pkt; + + eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_NCSI); + pkt += eth_hdr_size; + + /* Set NCSI command header fields */ + hdr = (struct ncsi_pkt_hdr *)pkt; + hdr->mc_id = 0; + hdr->revision = NCSI_PKT_REVISION; + hdr->id = ++ncsi_priv->last_request; + ncsi_priv->requests[ncsi_priv->last_request] = 1; + hdr->type = cmd; + hdr->channel = NCSI_TO_CHANNEL(np, nc); + hdr->length = htons(len); + + if (payload && len) + memcpy(pkt + sizeof(struct ncsi_pkt_hdr), payload, len); + + /* Calculate checksum */ + checksum = ncsi_calculate_checksum((unsigned char *)hdr, + sizeof(*hdr) + len); + pchecksum = (__be32 *)((void *)(hdr + 1) + len); + put_unaligned_be32(htonl(checksum), pchecksum); + + if (wait) { + net_set_timeout_handler(1000UL, ncsi_timeout_handler); + ncsi_priv->pending_requests++; + } + + if (len < 26) + len = 26; + /* frame header, packet header, payload, checksum */ + final_len = eth_hdr_size + sizeof(struct ncsi_cmd_pkt_hdr) + len + 4; + + net_send_packet(start, final_len); + free(start); + return 0; +} + +static void ncsi_handle_aen(struct ip_udp_hdr *ip, unsigned int len) +{ + struct ncsi_aen_pkt_hdr *hdr = (struct ncsi_aen_pkt_hdr *)ip; + int payload, i; + __be32 pchecksum; + u32 checksum; + + switch (hdr->type) { + case NCSI_PKT_AEN_LSC: + printf("NCSI: link state changed\n"); + payload = 12; + break; + case NCSI_PKT_AEN_CR: + printf("NCSI: re-configuration required\n"); + payload = 4; + break; + case NCSI_PKT_AEN_HNCDSC: + /* Host notifcation - N/A but weird */ + debug("NCSI: HNCDSC AEN received\n"); + return; + default: + printf("%s: Invalid type 0x%02x\n", __func__, hdr->type); + return; + } + + /* Validate packet */ + if (hdr->common.revision != 1) { + printf("NCSI: 0x%02x response has unsupported revision 0x%x\n", + hdr->common.type, hdr->common.revision); + return; + } + + if (ntohs(hdr->common.length) != payload) { + printf("NCSI: 0x%02x response has incorrect length %d\n", + hdr->common.type, hdr->common.length); + return; + } + + pchecksum = get_unaligned_be32((void *)(hdr + 1) + payload - 4); + if (pchecksum != 0) { + checksum = ncsi_calculate_checksum((unsigned char *)hdr, + sizeof(*hdr) + payload - 4); + if (pchecksum != checksum) { + printf("NCSI: 0x%02x response has invalid checksum\n", + hdr->common.type); + return; + } + } + + /* Link or configuration lost - just redo the discovery process */ + ncsi_priv->state = NCSI_PROBE_PACKAGE_SP; + for (i = 0; i < ncsi_priv->n_packages; i++) + free(ncsi_priv->packages[i].channels); + free(ncsi_priv->packages); + ncsi_priv->n_packages = 0; + + ncsi_priv->current_package = NCSI_PACKAGE_MAX; + ncsi_priv->current_channel = NCSI_CHANNEL_MAX; + + ncsi_probe_packages(); +} + +void ncsi_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, + unsigned int len) +{ + struct ncsi_rsp_pkt *pkt = (struct ncsi_rsp_pkt *)ip; + struct ncsi_rsp_pkt_hdr *nh = (struct ncsi_rsp_pkt_hdr *)&pkt->rsp; + void (*handler)(struct ncsi_rsp_pkt *pkt) = NULL; + unsigned short payload; + + if (ncsi_priv->pending_requests) + ncsi_priv->pending_requests--; + + if (len < sizeof(struct ncsi_rsp_pkt_hdr)) { + printf("NCSI: undersized packet: %u bytes\n", len); + goto out; + } + + if (nh->common.type == NCSI_PKT_AEN) + return ncsi_handle_aen(ip, len); + + switch (nh->common.type) { + case NCSI_PKT_RSP_SP: + payload = 4; + handler = ncsi_rsp_sp; + break; + case NCSI_PKT_RSP_DP: + payload = 4; + handler = ncsi_rsp_dp; + break; + case NCSI_PKT_RSP_CIS: + payload = 4; + handler = ncsi_rsp_cis; + break; + case NCSI_PKT_RSP_GLS: + payload = 16; + handler = ncsi_rsp_gls; + break; + case NCSI_PKT_RSP_GVI: + payload = 40; + handler = ncsi_rsp_gvi; + break; + case NCSI_PKT_RSP_GC: + payload = 32; + handler = ncsi_rsp_gc; + break; + case NCSI_PKT_RSP_SMA: + payload = 4; + handler = ncsi_rsp_sma; + break; + case NCSI_PKT_RSP_EBF: + payload = 4; + handler = ncsi_rsp_ebf; + break; + case NCSI_PKT_RSP_ECNT: + payload = 4; + handler = ncsi_rsp_ecnt; + break; + case NCSI_PKT_RSP_EC: + payload = 4; + handler = ncsi_rsp_ec; + break; + case NCSI_PKT_RSP_AE: + payload = 4; + handler = NULL; + break; + default: + printf("NCSI: unsupported packet type 0x%02x\n", + nh->common.type); + goto out; + } + + if (ncsi_validate_rsp(pkt, payload) != 0) { + printf("NCSI: discarding invalid packet of type 0x%02x\n", + nh->common.type); + goto out; + } + + if (handler) + handler(pkt); +out: + ncsi_update_state(nh); +} + +static void ncsi_send_sp(unsigned int np) +{ + uchar payload[4] = {0}; + + ncsi_send_command(np, NCSI_RESERVED_CHANNEL, NCSI_PKT_CMD_SP, + (unsigned char *)&payload, + cmd_payload(NCSI_PKT_CMD_SP), true); +} + +static void ncsi_send_dp(unsigned int np) +{ + ncsi_send_command(np, NCSI_RESERVED_CHANNEL, NCSI_PKT_CMD_DP, NULL, 0, + true); +} + +static void ncsi_send_gls(unsigned int np, unsigned int nc) +{ + ncsi_send_command(np, nc, NCSI_PKT_CMD_GLS, NULL, 0, true); +} + +static void ncsi_send_cis(unsigned int np, unsigned int nc) +{ + ncsi_send_command(np, nc, NCSI_PKT_CMD_CIS, NULL, 0, true); +} + +static void ncsi_send_ae(unsigned int np, unsigned int nc) +{ + struct ncsi_cmd_ae_pkt cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.mode = htonl(ncsi_priv->packages[np].channels[nc].cap_aen); + + ncsi_send_command(np, nc, NCSI_PKT_CMD_AE, + ((unsigned char *)&cmd) + + sizeof(struct ncsi_cmd_pkt_hdr), + cmd_payload(NCSI_PKT_CMD_AE), true); +} + +static void ncsi_send_ebf(unsigned int np, unsigned int nc) +{ + struct ncsi_cmd_ebf_pkt cmd; + + memset(&cmd, 0, sizeof(cmd)); + cmd.mode = htonl(ncsi_priv->packages[np].channels[nc].cap_bc); + + ncsi_send_command(np, nc, NCSI_PKT_CMD_EBF, + ((unsigned char *)&cmd) + + sizeof(struct ncsi_cmd_pkt_hdr), + cmd_payload(NCSI_PKT_CMD_EBF), true); +} + +static void ncsi_send_sma(unsigned int np, unsigned int nc) +{ + struct ncsi_cmd_sma_pkt cmd; + unsigned char *addr, i; + + addr = eth_get_ethaddr(); + if (!addr) { + printf("NCSI: no MAC address configured\n"); + return; + } + + memset(&cmd, 0, sizeof(cmd)); + for (i = 0; i < ARP_HLEN; i++) + cmd.mac[i] = addr[i]; + cmd.index = 1; + cmd.at_e = 1; + + ncsi_send_command(np, nc, NCSI_PKT_CMD_SMA, + ((unsigned char *)&cmd) + + sizeof(struct ncsi_cmd_pkt_hdr), + cmd_payload(NCSI_PKT_CMD_SMA), true); +} + +void ncsi_probe_packages(void) +{ + struct ncsi_package *package; + unsigned int np, nc; + + switch (ncsi_priv->state) { + case NCSI_PROBE_PACKAGE_SP: + if (ncsi_priv->current_package == NCSI_PACKAGE_MAX) + ncsi_priv->current_package = 0; + ncsi_send_sp(ncsi_priv->current_package); + break; + case NCSI_PROBE_PACKAGE_DP: + ncsi_send_dp(ncsi_priv->current_package); + break; + case NCSI_PROBE_CHANNEL_SP: + if (ncsi_priv->n_packages > 0) + ncsi_send_sp(ncsi_priv->current_package); + else + printf("NCSI: no packages discovered, configuration not possible\n"); + break; + case NCSI_PROBE_CHANNEL: + /* Kicks off chain of channel discovery */ + ncsi_send_cis(ncsi_priv->current_package, + ncsi_priv->current_channel); + break; + case NCSI_CONFIG: + for (np = 0; np < ncsi_priv->n_packages; np++) { + package = &ncsi_priv->packages[np]; + for (nc = 0; nc < package->n_channels; nc++) + if (package->channels[nc].has_link) + break; + if (nc < package->n_channels) + break; + } + if (np == ncsi_priv->n_packages) { + printf("NCSI: no link available\n"); + return; + } + + printf("NCSI: configuring channel %d\n", nc); + ncsi_priv->current_package = np; + ncsi_priv->current_channel = nc; + /* Kicks off rest of configure chain */ + ncsi_send_sma(np, nc); + break; + default: + printf("NCSI: unknown state 0x%x\n", ncsi_priv->state); + } +} + +int ncsi_probe(struct phy_device *phydev) +{ + if (!phydev->priv) { + phydev->priv = malloc(sizeof(struct ncsi)); + if (!phydev->priv) + return -ENOMEM; + memset(phydev->priv, 0, sizeof(struct ncsi)); + } + + ncsi_priv = phydev->priv; + + return 0; +} + +int ncsi_startup(struct phy_device *phydev) +{ + /* Set phydev parameters */ + phydev->speed = SPEED_100; + phydev->duplex = DUPLEX_FULL; + /* Normal phy reset is N/A */ + phydev->flags |= PHY_FLAG_BROKEN_RESET; + + /* Set initial probe state */ + ncsi_priv->state = NCSI_PROBE_PACKAGE_SP; + + /* No active package/channel yet */ + ncsi_priv->current_package = NCSI_PACKAGE_MAX; + ncsi_priv->current_channel = NCSI_CHANNEL_MAX; + + /* Pretend link works so the MAC driver sets final bits up */ + phydev->link = true; + + /* Set ncsi_priv so we can use it when called from net_loop() */ + ncsi_priv = phydev->priv; + + return 0; +} + +int ncsi_shutdown(struct phy_device *phydev) +{ + printf("NCSI: Disabling package %d\n", ncsi_priv->current_package); + ncsi_send_dp(ncsi_priv->current_package); + return 0; +} + +static struct phy_driver ncsi_driver = { + .uid = PHY_NCSI_ID, + .mask = 0xffffffff, + .name = "NC-SI", + .features = PHY_100BT_FEATURES | PHY_DEFAULT_FEATURES | SUPPORTED_100baseT_Full | SUPPORTED_MII, + .probe = ncsi_probe, + .startup = ncsi_startup, + .shutdown = ncsi_shutdown, +}; + +int phy_ncsi_init(void) +{ + phy_register(&ncsi_driver); + return 0; +} diff --git a/include/net.h b/include/net.h index 44b32385c4..20c448ee60 100644 --- a/include/net.h +++ b/include/net.h @@ -343,6 +343,7 @@ struct vlan_ethernet_hdr { #define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */ #define PROT_IPV6 0x86dd /* IPv6 over bluebook */ #define PROT_PPP_SES 0x8864 /* PPPoE session messages */ +#define PROT_NCSI 0x88f8 /* NC-SI control packets */

#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */ #define IPPROTO_UDP 17 /* User Datagram Protocol */ diff --git a/include/net/ncsi-pkt.h b/include/net/ncsi-pkt.h new file mode 100644 index 0000000000..a8e9def593 --- /dev/null +++ b/include/net/ncsi-pkt.h @@ -0,0 +1,442 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright Gavin Shan, IBM Corporation 2016. + */ + +#ifndef __NCSI_PKT_H__ +#define __NCSI_PKT_H__ + +struct ncsi_pkt_hdr { + unsigned char mc_id; /* Management controller ID */ + unsigned char revision; /* NCSI version - 0x01 */ + unsigned char reserved; /* Reserved */ + unsigned char id; /* Packet sequence number */ + unsigned char type; /* Packet type */ + unsigned char channel; /* Network controller ID */ + __be16 length; /* Payload length */ + __be32 reserved1[2]; /* Reserved */ +}; + +struct ncsi_cmd_pkt_hdr { + struct ncsi_pkt_hdr common; /* Common NCSI packet header */ +}; + +struct ncsi_rsp_pkt_hdr { + struct ncsi_pkt_hdr common; /* Common NCSI packet header */ + __be16 code; /* Response code */ + __be16 reason; /* Response reason */ +}; + +struct ncsi_aen_pkt_hdr { + struct ncsi_pkt_hdr common; /* Common NCSI packet header */ + unsigned char reserved2[3]; /* Reserved */ + unsigned char type; /* AEN packet type */ +}; + +/* NCSI common command packet */ +struct ncsi_cmd_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 checksum; /* Checksum */ + unsigned char pad[26]; +}; + +struct ncsi_rsp_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Select Package */ +struct ncsi_cmd_sp_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char reserved[3]; /* Reserved */ + unsigned char hw_arbitration; /* HW arbitration */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Disable Channel */ +struct ncsi_cmd_dc_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char reserved[3]; /* Reserved */ + unsigned char ald; /* Allow link down */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Reset Channel */ +struct ncsi_cmd_rc_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 reserved; /* Reserved */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* AEN Enable */ +struct ncsi_cmd_ae_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char reserved[3]; /* Reserved */ + unsigned char mc_id; /* MC ID */ + __be32 mode; /* AEN working mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[18]; +}; + +/* Set Link */ +struct ncsi_cmd_sl_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 mode; /* Link working mode */ + __be32 oem_mode; /* OEM link mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[18]; +}; + +/* Set VLAN Filter */ +struct ncsi_cmd_svf_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be16 reserved; /* Reserved */ + __be16 vlan; /* VLAN ID */ + __be16 reserved1; /* Reserved */ + unsigned char index; /* VLAN table index */ + unsigned char enable; /* Enable or disable */ + __be32 checksum; /* Checksum */ + unsigned char pad[18]; +}; + +/* Enable VLAN */ +struct ncsi_cmd_ev_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char reserved[3]; /* Reserved */ + unsigned char mode; /* VLAN filter mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Set MAC Address */ +struct ncsi_cmd_sma_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char mac[6]; /* MAC address */ + unsigned char index; /* MAC table index */ + unsigned char at_e; /* Addr type and operation */ + __be32 checksum; /* Checksum */ + unsigned char pad[18]; +}; + +/* Enable Broadcast Filter */ +struct ncsi_cmd_ebf_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 mode; /* Filter mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Enable Global Multicast Filter */ +struct ncsi_cmd_egmf_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 mode; /* Global MC mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* Set NCSI Flow Control */ +struct ncsi_cmd_snfc_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + unsigned char reserved[3]; /* Reserved */ + unsigned char mode; /* Flow control mode */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* OEM Request Command as per NCSI Specification */ +struct ncsi_cmd_oem_pkt { + struct ncsi_cmd_pkt_hdr cmd; /* Command header */ + __be32 mfr_id; /* Manufacture ID */ + unsigned char data[]; /* OEM Payload Data */ +}; + +/* OEM Response Packet as per NCSI Specification */ +struct ncsi_rsp_oem_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Command header */ + __be32 mfr_id; /* Manufacture ID */ + unsigned char data[]; /* Payload data */ +}; + +/* Mellanox Response Data */ +struct ncsi_rsp_oem_mlx_pkt { + unsigned char cmd_rev; /* Command Revision */ + unsigned char cmd; /* Command ID */ + unsigned char param; /* Parameter */ + unsigned char optional; /* Optional data */ + unsigned char data[]; /* Data */ +}; + +/* Broadcom Response Data */ +struct ncsi_rsp_oem_bcm_pkt { + unsigned char ver; /* Payload Version */ + unsigned char type; /* OEM Command type */ + __be16 len; /* Payload Length */ + unsigned char data[]; /* Cmd specific Data */ +}; + +/* Get Link Status */ +struct ncsi_rsp_gls_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 status; /* Link status */ + __be32 other; /* Other indications */ + __be32 oem_status; /* OEM link status */ + __be32 checksum; + unsigned char pad[10]; +}; + +/* Get Version ID */ +struct ncsi_rsp_gvi_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 ncsi_version; /* NCSI version */ + unsigned char reserved[3]; /* Reserved */ + unsigned char alpha2; /* NCSI version */ + unsigned char fw_name[12]; /* f/w name string */ + __be32 fw_version; /* f/w version */ + __be16 pci_ids[4]; /* PCI IDs */ + __be32 mf_id; /* Manufacture ID */ + __be32 checksum; +}; + +/* Get Capabilities */ +struct ncsi_rsp_gc_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 cap; /* Capabilities */ + __be32 bc_cap; /* Broadcast cap */ + __be32 mc_cap; /* Multicast cap */ + __be32 buf_cap; /* Buffering cap */ + __be32 aen_cap; /* AEN cap */ + unsigned char vlan_cnt; /* VLAN filter count */ + unsigned char mixed_cnt; /* Mix filter count */ + unsigned char mc_cnt; /* MC filter count */ + unsigned char uc_cnt; /* UC filter count */ + unsigned char reserved[2]; /* Reserved */ + unsigned char vlan_mode; /* VLAN mode */ + unsigned char channel_cnt; /* Channel count */ + __be32 checksum; /* Checksum */ +}; + +/* Get Parameters */ +struct ncsi_rsp_gp_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + unsigned char mac_cnt; /* Number of MAC addr */ + unsigned char reserved[2]; /* Reserved */ + unsigned char mac_enable; /* MAC addr enable flags */ + unsigned char vlan_cnt; /* VLAN tag count */ + unsigned char reserved1; /* Reserved */ + __be16 vlan_enable; /* VLAN tag enable flags */ + __be32 link_mode; /* Link setting */ + __be32 bc_mode; /* BC filter mode */ + __be32 valid_modes; /* Valid mode parameters */ + unsigned char vlan_mode; /* VLAN mode */ + unsigned char fc_mode; /* Flow control mode */ + unsigned char reserved2[2]; /* Reserved */ + __be32 aen_mode; /* AEN mode */ + unsigned char mac[6]; /* Supported MAC addr */ + __be16 vlan; /* Supported VLAN tags */ + __be32 checksum; /* Checksum */ +}; + +/* Get Controller Packet Statistics */ +struct ncsi_rsp_gcps_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 cnt_hi; /* Counter cleared */ + __be32 cnt_lo; /* Counter cleared */ + __be32 rx_bytes; /* Rx bytes */ + __be32 tx_bytes; /* Tx bytes */ + __be32 rx_uc_pkts; /* Rx UC packets */ + __be32 rx_mc_pkts; /* Rx MC packets */ + __be32 rx_bc_pkts; /* Rx BC packets */ + __be32 tx_uc_pkts; /* Tx UC packets */ + __be32 tx_mc_pkts; /* Tx MC packets */ + __be32 tx_bc_pkts; /* Tx BC packets */ + __be32 fcs_err; /* FCS errors */ + __be32 align_err; /* Alignment errors */ + __be32 false_carrier; /* False carrier detection */ + __be32 runt_pkts; /* Rx runt packets */ + __be32 jabber_pkts; /* Rx jabber packets */ + __be32 rx_pause_xon; /* Rx pause XON frames */ + __be32 rx_pause_xoff; /* Rx XOFF frames */ + __be32 tx_pause_xon; /* Tx XON frames */ + __be32 tx_pause_xoff; /* Tx XOFF frames */ + __be32 tx_s_collision; /* Single collision frames */ + __be32 tx_m_collision; /* Multiple collision frames */ + __be32 l_collision; /* Late collision frames */ + __be32 e_collision; /* Excessive collision frames */ + __be32 rx_ctl_frames; /* Rx control frames */ + __be32 rx_64_frames; /* Rx 64-bytes frames */ + __be32 rx_127_frames; /* Rx 65-127 bytes frames */ + __be32 rx_255_frames; /* Rx 128-255 bytes frames */ + __be32 rx_511_frames; /* Rx 256-511 bytes frames */ + __be32 rx_1023_frames; /* Rx 512-1023 bytes frames */ + __be32 rx_1522_frames; /* Rx 1024-1522 bytes frames */ + __be32 rx_9022_frames; /* Rx 1523-9022 bytes frames */ + __be32 tx_64_frames; /* Tx 64-bytes frames */ + __be32 tx_127_frames; /* Tx 65-127 bytes frames */ + __be32 tx_255_frames; /* Tx 128-255 bytes frames */ + __be32 tx_511_frames; /* Tx 256-511 bytes frames */ + __be32 tx_1023_frames; /* Tx 512-1023 bytes frames */ + __be32 tx_1522_frames; /* Tx 1024-1522 bytes frames */ + __be32 tx_9022_frames; /* Tx 1523-9022 bytes frames */ + __be32 rx_valid_bytes; /* Rx valid bytes */ + __be32 rx_runt_pkts; /* Rx error runt packets */ + __be32 rx_jabber_pkts; /* Rx error jabber packets */ + __be32 checksum; /* Checksum */ +}; + +/* Get NCSI Statistics */ +struct ncsi_rsp_gns_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 rx_cmds; /* Rx NCSI commands */ + __be32 dropped_cmds; /* Dropped commands */ + __be32 cmd_type_errs; /* Command type errors */ + __be32 cmd_csum_errs; /* Command checksum errors */ + __be32 rx_pkts; /* Rx NCSI packets */ + __be32 tx_pkts; /* Tx NCSI packets */ + __be32 tx_aen_pkts; /* Tx AEN packets */ + __be32 checksum; /* Checksum */ +}; + +/* Get NCSI Pass-through Statistics */ +struct ncsi_rsp_gnpts_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 tx_pkts; /* Tx packets */ + __be32 tx_dropped; /* Tx dropped packets */ + __be32 tx_channel_err; /* Tx channel errors */ + __be32 tx_us_err; /* Tx undersize errors */ + __be32 rx_pkts; /* Rx packets */ + __be32 rx_dropped; /* Rx dropped packets */ + __be32 rx_channel_err; /* Rx channel errors */ + __be32 rx_us_err; /* Rx undersize errors */ + __be32 rx_os_err; /* Rx oversize errors */ + __be32 checksum; /* Checksum */ +}; + +/* Get package status */ +struct ncsi_rsp_gps_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + __be32 status; /* Hardware arbitration status */ + __be32 checksum; +}; + +/* Get package UUID */ +struct ncsi_rsp_gpuuid_pkt { + struct ncsi_rsp_pkt_hdr rsp; /* Response header */ + unsigned char uuid[16]; /* UUID */ + __be32 checksum; +}; + +/* AEN: Link State Change */ +struct ncsi_aen_lsc_pkt { + struct ncsi_aen_pkt_hdr aen; /* AEN header */ + __be32 status; /* Link status */ + __be32 oem_status; /* OEM link status */ + __be32 checksum; /* Checksum */ + unsigned char pad[14]; +}; + +/* AEN: Configuration Required */ +struct ncsi_aen_cr_pkt { + struct ncsi_aen_pkt_hdr aen; /* AEN header */ + __be32 checksum; /* Checksum */ + unsigned char pad[22]; +}; + +/* AEN: Host Network Controller Driver Status Change */ +struct ncsi_aen_hncdsc_pkt { + struct ncsi_aen_pkt_hdr aen; /* AEN header */ + __be32 status; /* Status */ + __be32 checksum; /* Checksum */ + unsigned char pad[18]; +}; + +/* NCSI packet revision */ +#define NCSI_PKT_REVISION 0x01 + +/* NCSI packet commands */ +#define NCSI_PKT_CMD_CIS 0x00 /* Clear Initial State */ +#define NCSI_PKT_CMD_SP 0x01 /* Select Package */ +#define NCSI_PKT_CMD_DP 0x02 /* Deselect Package */ +#define NCSI_PKT_CMD_EC 0x03 /* Enable Channel */ +#define NCSI_PKT_CMD_DC 0x04 /* Disable Channel */ +#define NCSI_PKT_CMD_RC 0x05 /* Reset Channel */ +#define NCSI_PKT_CMD_ECNT 0x06 /* Enable Channel Network Tx */ +#define NCSI_PKT_CMD_DCNT 0x07 /* Disable Channel Network Tx */ +#define NCSI_PKT_CMD_AE 0x08 /* AEN Enable */ +#define NCSI_PKT_CMD_SL 0x09 /* Set Link */ +#define NCSI_PKT_CMD_GLS 0x0a /* Get Link */ +#define NCSI_PKT_CMD_SVF 0x0b /* Set VLAN Filter */ +#define NCSI_PKT_CMD_EV 0x0c /* Enable VLAN */ +#define NCSI_PKT_CMD_DV 0x0d /* Disable VLAN */ +#define NCSI_PKT_CMD_SMA 0x0e /* Set MAC address */ +#define NCSI_PKT_CMD_EBF 0x10 /* Enable Broadcast Filter */ +#define NCSI_PKT_CMD_DBF 0x11 /* Disable Broadcast Filter */ +#define NCSI_PKT_CMD_EGMF 0x12 /* Enable Global Multicast Filter */ +#define NCSI_PKT_CMD_DGMF 0x13 /* Disable Global Multicast Filter */ +#define NCSI_PKT_CMD_SNFC 0x14 /* Set NCSI Flow Control */ +#define NCSI_PKT_CMD_GVI 0x15 /* Get Version ID */ +#define NCSI_PKT_CMD_GC 0x16 /* Get Capabilities */ +#define NCSI_PKT_CMD_GP 0x17 /* Get Parameters */ +#define NCSI_PKT_CMD_GCPS 0x18 /* Get Controller Packet Statistics */ +#define NCSI_PKT_CMD_GNS 0x19 /* Get NCSI Statistics */ +#define NCSI_PKT_CMD_GNPTS 0x1a /* Get NCSI Pass-throu Statistics */ +#define NCSI_PKT_CMD_GPS 0x1b /* Get package status */ +#define NCSI_PKT_CMD_OEM 0x50 /* OEM */ +#define NCSI_PKT_CMD_PLDM 0x51 /* PLDM request over NCSI over RBT */ +#define NCSI_PKT_CMD_GPUUID 0x52 /* Get package UUID */ + +/* NCSI packet responses */ +#define NCSI_PKT_RSP_CIS (NCSI_PKT_CMD_CIS + 0x80) +#define NCSI_PKT_RSP_SP (NCSI_PKT_CMD_SP + 0x80) +#define NCSI_PKT_RSP_DP (NCSI_PKT_CMD_DP + 0x80) +#define NCSI_PKT_RSP_EC (NCSI_PKT_CMD_EC + 0x80) +#define NCSI_PKT_RSP_DC (NCSI_PKT_CMD_DC + 0x80) +#define NCSI_PKT_RSP_RC (NCSI_PKT_CMD_RC + 0x80) +#define NCSI_PKT_RSP_ECNT (NCSI_PKT_CMD_ECNT + 0x80) +#define NCSI_PKT_RSP_DCNT (NCSI_PKT_CMD_DCNT + 0x80) +#define NCSI_PKT_RSP_AE (NCSI_PKT_CMD_AE + 0x80) +#define NCSI_PKT_RSP_SL (NCSI_PKT_CMD_SL + 0x80) +#define NCSI_PKT_RSP_GLS (NCSI_PKT_CMD_GLS + 0x80) +#define NCSI_PKT_RSP_SVF (NCSI_PKT_CMD_SVF + 0x80) +#define NCSI_PKT_RSP_EV (NCSI_PKT_CMD_EV + 0x80) +#define NCSI_PKT_RSP_DV (NCSI_PKT_CMD_DV + 0x80) +#define NCSI_PKT_RSP_SMA (NCSI_PKT_CMD_SMA + 0x80) +#define NCSI_PKT_RSP_EBF (NCSI_PKT_CMD_EBF + 0x80) +#define NCSI_PKT_RSP_DBF (NCSI_PKT_CMD_DBF + 0x80) +#define NCSI_PKT_RSP_EGMF (NCSI_PKT_CMD_EGMF + 0x80) +#define NCSI_PKT_RSP_DGMF (NCSI_PKT_CMD_DGMF + 0x80) +#define NCSI_PKT_RSP_SNFC (NCSI_PKT_CMD_SNFC + 0x80) +#define NCSI_PKT_RSP_GVI (NCSI_PKT_CMD_GVI + 0x80) +#define NCSI_PKT_RSP_GC (NCSI_PKT_CMD_GC + 0x80) +#define NCSI_PKT_RSP_GP (NCSI_PKT_CMD_GP + 0x80) +#define NCSI_PKT_RSP_GCPS (NCSI_PKT_CMD_GCPS + 0x80) +#define NCSI_PKT_RSP_GNS (NCSI_PKT_CMD_GNS + 0x80) +#define NCSI_PKT_RSP_GNPTS (NCSI_PKT_CMD_GNPTS + 0x80) +#define NCSI_PKT_RSP_GPS (NCSI_PKT_CMD_GPS + 0x80) +#define NCSI_PKT_RSP_OEM (NCSI_PKT_CMD_OEM + 0x80) +#define NCSI_PKT_RSP_PLDM (NCSI_PKT_CMD_PLDM + 0x80) +#define NCSI_PKT_RSP_GPUUID (NCSI_PKT_CMD_GPUUID + 0x80) + +/* NCSI response code/reason */ +#define NCSI_PKT_RSP_C_COMPLETED 0x0000 /* Command Completed */ +#define NCSI_PKT_RSP_C_FAILED 0x0001 /* Command Failed */ +#define NCSI_PKT_RSP_C_UNAVAILABLE 0x0002 /* Command Unavailable */ +#define NCSI_PKT_RSP_C_UNSUPPORTED 0x0003 /* Command Unsupported */ +#define NCSI_PKT_RSP_R_NO_ERROR 0x0000 /* No Error */ +#define NCSI_PKT_RSP_R_INTERFACE 0x0001 /* Interface not ready */ +#define NCSI_PKT_RSP_R_PARAM 0x0002 /* Invalid Parameter */ +#define NCSI_PKT_RSP_R_CHANNEL 0x0003 /* Channel not Ready */ +#define NCSI_PKT_RSP_R_PACKAGE 0x0004 /* Package not Ready */ +#define NCSI_PKT_RSP_R_LENGTH 0x0005 /* Invalid payload length */ +#define NCSI_PKT_RSP_R_UNKNOWN 0x7fff /* Command type unsupported */ + +/* NCSI AEN packet type */ +#define NCSI_PKT_AEN 0xFF /* AEN Packet */ +#define NCSI_PKT_AEN_LSC 0x00 /* Link status change */ +#define NCSI_PKT_AEN_CR 0x01 /* Configuration required */ +#define NCSI_PKT_AEN_HNCDSC 0x02 /* HNC driver status change */ + +#endif /* __NCSI_PKT_H__ */ diff --git a/include/net/ncsi.h b/include/net/ncsi.h new file mode 100644 index 0000000000..9637beab2a --- /dev/null +++ b/include/net/ncsi.h @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * NC-SI PHY + * + * Copyright (C) 2019, IBM Corporation. + */ + +#include <common.h> +#include <phy.h> + +bool ncsi_active(void); +void ncsi_receive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, + unsigned int len); +void ncsi_probe_packages(void); diff --git a/include/phy.h b/include/phy.h index d01435d1aa..297fc7a78e 100644 --- a/include/phy.h +++ b/include/phy.h @@ -17,6 +17,7 @@ #include <phy_interface.h>

#define PHY_FIXED_ID 0xa5a55a5a +#define PHY_NCSI_ID 0xbeefcafe

#define PHY_MAX_ADDR 32

Update the ftgmac100 driver to support NC-SI instead of an mdio phy where available. This is a common setup for Aspeed AST2x00 platforms.

NC-SI mode is determined from the device-tree if either phy-mode sets it or the use-ncsi property exists. If set then normal mdio setup is skipped in favour of the NC-SI phy.

Signed-off-by: Samuel Mendoza-Jonas sam@mendozajonas.com --- drivers/net/ftgmac100.c | 39 +++++++++++++++++++++++++++++---------- 1 file changed, 29 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c index 92c38a81bd..c0100e91c7 100644 --- a/drivers/net/ftgmac100.c +++ b/drivers/net/ftgmac100.c @@ -18,6 +18,7 @@ #include <wait_bit.h> #include <linux/io.h> #include <linux/iopoll.h> +#include <net/ncsi.h>

#include "ftgmac100.h"

@@ -81,6 +82,7 @@ struct ftgmac100_data { struct mii_dev *bus; u32 phy_mode; u32 max_speed; + bool ncsi_mode;

struct clk_bulk clks;

@@ -181,7 +183,7 @@ static int ftgmac100_phy_adjust_link(struct ftgmac100_data *priv) struct phy_device *phydev = priv->phydev; u32 maccr;

- if (!phydev->link) { + if (!phydev->link && !priv->ncsi_mode) { dev_err(phydev->dev, "No link\n"); return -EREMOTEIO; } @@ -217,7 +219,8 @@ static int ftgmac100_phy_init(struct udevice *dev) if (!phydev) return -ENODEV;

- phydev->supported &= PHY_GBIT_FEATURES; + if (!priv->ncsi_mode) + phydev->supported &= PHY_GBIT_FEATURES; if (priv->max_speed) { ret = phy_set_supported(phydev, priv->max_speed); if (ret) @@ -275,7 +278,8 @@ static void ftgmac100_stop(struct udevice *dev)

writel(0, &ftgmac100->maccr);

- phy_shutdown(priv->phydev); + if (!priv->ncsi_mode) + phy_shutdown(priv->phydev); }

static int ftgmac100_start(struct udevice *dev) @@ -513,6 +517,7 @@ static int ftgmac100_ofdata_to_platdata(struct udevice *dev) pdata->iobase = devfdt_get_addr(dev); pdata->phy_interface = -1; phy_mode = dev_read_string(dev, "phy-mode"); + if (phy_mode) pdata->phy_interface = phy_get_interface_by_name(phy_mode); if (pdata->phy_interface == -1) { @@ -537,8 +542,13 @@ static int ftgmac100_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_platdata(dev); struct ftgmac100_data *priv = dev_get_priv(dev); + const char *phy_mode; int ret;

+ phy_mode = dev_read_string(dev, "phy-mode"); + priv->ncsi_mode = dev_read_bool(dev, "use-ncsi") || + (phy_mode && strcmp(phy_mode, "NC-SI") == 0); + priv->iobase = (struct ftgmac100 *)pdata->iobase; priv->phy_mode = pdata->phy_interface; priv->max_speed = pdata->max_speed; @@ -548,10 +558,15 @@ static int ftgmac100_probe(struct udevice *dev) if (ret) goto out;

- ret = ftgmac100_mdio_init(dev); - if (ret) { - dev_err(dev, "Failed to initialize mdiobus: %d\n", ret); - goto out; + if (priv->ncsi_mode) { + printf("%s - NCSI detected\n", __func__); + } else { + ret = ftgmac100_mdio_init(dev); + if (ret) { + dev_err(dev, "Failed to initialize mdiobus: %d\n", ret); + goto out; + } + }

ret = ftgmac100_phy_init(dev); @@ -571,9 +586,13 @@ static int ftgmac100_remove(struct udevice *dev) { struct ftgmac100_data *priv = dev_get_priv(dev);

- free(priv->phydev); - mdio_unregister(priv->bus); - mdio_free(priv->bus); + if (!priv->ncsi_mode) { + free(priv->phydev); + mdio_unregister(priv->bus); + mdio_free(priv->bus); + } else { + free(priv->phydev); + } clk_release_bulk(&priv->clks);

return 0;