462 lines
11 KiB
C
462 lines
11 KiB
C
/*-
|
|
* Copyright (c) 2015 The FreeBSD Foundation
|
|
*
|
|
* This software was developed by Semihalf under
|
|
* the sponsorship of the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bitset.h>
|
|
#include <sys/bitstring.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/ctype.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/pciio.h>
|
|
#include <sys/pcpu.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/cpuset.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <net/ethernet.h>
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/mii/miivar.h>
|
|
|
|
#include "thunder_bgx.h"
|
|
#include "thunder_bgx_var.h"
|
|
|
|
#define CONN_TYPE_MAXLEN 16
|
|
#define CONN_TYPE_OFFSET 2
|
|
|
|
#define BGX_NODE_NAME "bgx"
|
|
#define BGX_MAXID 9
|
|
/* BGX func. 0, i.e.: reg = <0x8000 0 0 0 0>; DEVFN = 0x80 */
|
|
#define BGX_DEVFN_0 0x80
|
|
|
|
#define FDT_NAME_MAXLEN 31
|
|
|
|
int bgx_fdt_init_phy(struct bgx *);
|
|
|
|
static void
|
|
bgx_fdt_get_macaddr(phandle_t phy, uint8_t *hwaddr)
|
|
{
|
|
uint8_t addr[ETHER_ADDR_LEN];
|
|
|
|
if (OF_getprop(phy, "local-mac-address", addr, ETHER_ADDR_LEN) == -1) {
|
|
/* Missing MAC address should be marked by clearing it */
|
|
memset(hwaddr, 0, ETHER_ADDR_LEN);
|
|
} else
|
|
memcpy(hwaddr, addr, ETHER_ADDR_LEN);
|
|
}
|
|
|
|
static boolean_t
|
|
bgx_fdt_phy_mode_match(struct bgx *bgx, char *qlm_mode, ssize_t size)
|
|
{
|
|
const char *type;
|
|
ssize_t sz;
|
|
ssize_t offset;
|
|
|
|
switch (bgx->qlm_mode) {
|
|
case QLM_MODE_SGMII:
|
|
type = "sgmii";
|
|
sz = sizeof("sgmii");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_XAUI_1X4:
|
|
type = "xaui";
|
|
sz = sizeof("xaui");
|
|
offset = size - sz;
|
|
if (offset < 0)
|
|
return (FALSE);
|
|
if (strncmp(&qlm_mode[offset], type, sz) == 0)
|
|
return (TRUE);
|
|
type = "dxaui";
|
|
sz = sizeof("dxaui");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_RXAUI_2X2:
|
|
type = "raui";
|
|
sz = sizeof("raui");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_XFI_4X1:
|
|
type = "xfi";
|
|
sz = sizeof("xfi");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_XLAUI_1X4:
|
|
type = "xlaui";
|
|
sz = sizeof("xlaui");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_10G_KR_4X1:
|
|
type = "xfi-10g-kr";
|
|
sz = sizeof("xfi-10g-kr");
|
|
offset = size - sz;
|
|
break;
|
|
case QLM_MODE_40G_KR4_1X4:
|
|
type = "xlaui-40g-kr";
|
|
sz = sizeof("xlaui-40g-kr");
|
|
offset = size - sz;
|
|
break;
|
|
default:
|
|
return (FALSE);
|
|
}
|
|
|
|
if (offset < 0)
|
|
return (FALSE);
|
|
|
|
if (strncmp(&qlm_mode[offset], type, sz) == 0)
|
|
return (TRUE);
|
|
|
|
return (FALSE);
|
|
}
|
|
|
|
static boolean_t
|
|
bgx_fdt_phy_name_match(struct bgx *bgx, char *phy_name, ssize_t size)
|
|
{
|
|
const char *type;
|
|
ssize_t sz;
|
|
char last;
|
|
|
|
switch (bgx->qlm_mode) {
|
|
case QLM_MODE_SGMII:
|
|
type = "sgmii";
|
|
sz = sizeof("sgmii");
|
|
break;
|
|
case QLM_MODE_XAUI_1X4:
|
|
type = "xaui";
|
|
sz = sizeof("xaui");
|
|
if (sz < size)
|
|
return (FALSE);
|
|
if (strncmp(phy_name, type, sz) == 0)
|
|
return (TRUE);
|
|
type = "dxaui";
|
|
sz = sizeof("dxaui");
|
|
break;
|
|
case QLM_MODE_RXAUI_2X2:
|
|
type = "raui";
|
|
sz = sizeof("raui");
|
|
break;
|
|
case QLM_MODE_XFI_4X1:
|
|
type = "xfi";
|
|
sz = sizeof("xfi");
|
|
break;
|
|
case QLM_MODE_XLAUI_1X4:
|
|
type = "xlaui";
|
|
sz = sizeof("xlaui");
|
|
break;
|
|
case QLM_MODE_10G_KR_4X1:
|
|
type = "xfi-10g-kr";
|
|
sz = sizeof("xfi-10g-kr");
|
|
break;
|
|
case QLM_MODE_40G_KR4_1X4:
|
|
type = "xlaui-40g-kr";
|
|
sz = sizeof("xlaui-40g-kr");
|
|
break;
|
|
default:
|
|
return (FALSE);
|
|
}
|
|
|
|
if (sz > size)
|
|
return (FALSE);
|
|
if (strncmp(phy_name, type, sz - 1) == 0) {
|
|
last = phy_name[sz - 1];
|
|
if (last == '\0' || last == '@' || isdigit(last))
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
}
|
|
|
|
static phandle_t
|
|
bgx_fdt_traverse_nodes(uint8_t unit, phandle_t start, char *name,
|
|
size_t len)
|
|
{
|
|
phandle_t node, ret;
|
|
uint32_t *reg;
|
|
size_t buf_size;
|
|
ssize_t proplen;
|
|
char *node_name;
|
|
int err;
|
|
|
|
/*
|
|
* Traverse all subordinate nodes of 'start' to find BGX instance.
|
|
* This supports both old (by name) and new (by reg) methods.
|
|
*/
|
|
buf_size = sizeof(*node_name) * FDT_NAME_MAXLEN;
|
|
if (len > buf_size) {
|
|
/*
|
|
* This is an erroneous situation since the string
|
|
* to compare cannot be longer than FDT_NAME_MAXLEN.
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
node_name = malloc(buf_size, M_BGX, M_WAITOK);
|
|
for (node = OF_child(start); node != 0; node = OF_peer(node)) {
|
|
/* Clean-up the buffer */
|
|
memset(node_name, 0, buf_size);
|
|
/* Recurse to children */
|
|
if (OF_child(node) != 0) {
|
|
ret = bgx_fdt_traverse_nodes(unit, node, name, len);
|
|
if (ret != 0) {
|
|
free(node_name, M_BGX);
|
|
return (ret);
|
|
}
|
|
}
|
|
/*
|
|
* Old way - by name
|
|
*/
|
|
proplen = OF_getproplen(node, "name");
|
|
if ((proplen <= 0) || (proplen < len))
|
|
continue;
|
|
|
|
err = OF_getprop(node, "name", node_name, proplen);
|
|
if (err <= 0)
|
|
continue;
|
|
|
|
if (strncmp(node_name, name, len) == 0) {
|
|
free(node_name, M_BGX);
|
|
return (node);
|
|
}
|
|
/*
|
|
* New way - by reg
|
|
*/
|
|
/* Check if even BGX */
|
|
if (strncmp(node_name,
|
|
BGX_NODE_NAME, sizeof(BGX_NODE_NAME) - 1) != 0)
|
|
continue;
|
|
/* Get reg */
|
|
err = OF_getencprop_alloc_multi(node, "reg", sizeof(*reg),
|
|
(void **)®);
|
|
if (err == -1) {
|
|
free(reg, M_OFWPROP);
|
|
continue;
|
|
}
|
|
|
|
/* Match BGX device function */
|
|
if ((BGX_DEVFN_0 + unit) == (reg[0] >> 8)) {
|
|
free(reg, M_OFWPROP);
|
|
free(node_name, M_BGX);
|
|
return (node);
|
|
}
|
|
free(reg, M_OFWPROP);
|
|
}
|
|
free(node_name, M_BGX);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Similar functionality to pci_find_pcie_root_port()
|
|
* but this one works for ThunderX.
|
|
*/
|
|
static device_t
|
|
bgx_find_root_pcib(device_t dev)
|
|
{
|
|
devclass_t pci_class;
|
|
device_t pcib, bus;
|
|
|
|
pci_class = devclass_find("pci");
|
|
KASSERT(device_get_devclass(device_get_parent(dev)) == pci_class,
|
|
("%s: non-pci device %s", __func__, device_get_nameunit(dev)));
|
|
|
|
/* Walk the bridge hierarchy until we find a non-PCI device */
|
|
for (;;) {
|
|
bus = device_get_parent(dev);
|
|
KASSERT(bus != NULL, ("%s: null parent of %s", __func__,
|
|
device_get_nameunit(dev)));
|
|
|
|
if (device_get_devclass(bus) != pci_class)
|
|
return (NULL);
|
|
|
|
pcib = device_get_parent(bus);
|
|
KASSERT(pcib != NULL, ("%s: null bridge of %s", __func__,
|
|
device_get_nameunit(bus)));
|
|
|
|
/*
|
|
* If the parent of this PCIB is not PCI
|
|
* then we found our root PCIB.
|
|
*/
|
|
if (device_get_devclass(device_get_parent(pcib)) != pci_class)
|
|
return (pcib);
|
|
|
|
dev = pcib;
|
|
}
|
|
}
|
|
|
|
static __inline phandle_t
|
|
bgx_fdt_find_node(struct bgx *bgx)
|
|
{
|
|
device_t root_pcib;
|
|
phandle_t node;
|
|
char *bgx_sel;
|
|
size_t len;
|
|
|
|
KASSERT(bgx->bgx_id <= BGX_MAXID,
|
|
("Invalid BGX ID: %d, max: %d", bgx->bgx_id, BGX_MAXID));
|
|
|
|
len = sizeof(BGX_NODE_NAME) + 1; /* <bgx_name>+<digit>+<\0> */
|
|
/* Allocate memory for BGX node name + "/" character */
|
|
bgx_sel = malloc(sizeof(*bgx_sel) * (len + 1), M_BGX,
|
|
M_ZERO | M_WAITOK);
|
|
|
|
/* Prepare node's name */
|
|
snprintf(bgx_sel, len + 1, "/"BGX_NODE_NAME"%d", bgx->bgx_id);
|
|
/* First try the root node */
|
|
node = OF_finddevice(bgx_sel);
|
|
if (node != -1) {
|
|
/* Found relevant node */
|
|
goto out;
|
|
}
|
|
/*
|
|
* Clean-up and try to find BGX in DT
|
|
* starting from the parent PCI bridge node.
|
|
*/
|
|
memset(bgx_sel, 0, sizeof(*bgx_sel) * (len + 1));
|
|
snprintf(bgx_sel, len, BGX_NODE_NAME"%d", bgx->bgx_id);
|
|
|
|
/* Find PCI bridge that we are connected to */
|
|
|
|
root_pcib = bgx_find_root_pcib(bgx->dev);
|
|
if (root_pcib == NULL) {
|
|
device_printf(bgx->dev, "Unable to find BGX root bridge\n");
|
|
node = 0;
|
|
goto out;
|
|
}
|
|
|
|
node = ofw_bus_get_node(root_pcib);
|
|
if ((int)node <= 0) {
|
|
device_printf(bgx->dev, "No parent FDT node for BGX\n");
|
|
goto out;
|
|
}
|
|
|
|
node = bgx_fdt_traverse_nodes(bgx->bgx_id, node, bgx_sel, len);
|
|
out:
|
|
free(bgx_sel, M_BGX);
|
|
return (node);
|
|
}
|
|
|
|
int
|
|
bgx_fdt_init_phy(struct bgx *bgx)
|
|
{
|
|
char *node_name;
|
|
phandle_t node, child;
|
|
phandle_t phy, mdio;
|
|
ssize_t len;
|
|
uint8_t lmac;
|
|
char qlm_mode[CONN_TYPE_MAXLEN];
|
|
|
|
node = bgx_fdt_find_node(bgx);
|
|
if (node == 0) {
|
|
device_printf(bgx->dev,
|
|
"Could not find bgx%d node in FDT\n", bgx->bgx_id);
|
|
return (ENXIO);
|
|
}
|
|
|
|
lmac = 0;
|
|
for (child = OF_child(node); child > 0; child = OF_peer(child)) {
|
|
len = OF_getprop(child, "qlm-mode", qlm_mode, sizeof(qlm_mode));
|
|
if (len > 0) {
|
|
if (!bgx_fdt_phy_mode_match(bgx, qlm_mode, len)) {
|
|
/*
|
|
* Connection type not match with BGX mode.
|
|
*/
|
|
continue;
|
|
}
|
|
} else {
|
|
len = OF_getprop_alloc(child, "name",
|
|
(void **)&node_name);
|
|
if (len <= 0) {
|
|
continue;
|
|
}
|
|
|
|
if (!bgx_fdt_phy_name_match(bgx, node_name, len)) {
|
|
free(node_name, M_OFWPROP);
|
|
continue;
|
|
}
|
|
free(node_name, M_OFWPROP);
|
|
}
|
|
|
|
/* Acquire PHY address */
|
|
if (OF_getencprop(child, "reg", &bgx->lmac[lmac].phyaddr,
|
|
sizeof(bgx->lmac[lmac].phyaddr)) <= 0) {
|
|
if (bootverbose) {
|
|
device_printf(bgx->dev,
|
|
"Could not retrieve PHY address\n");
|
|
}
|
|
bgx->lmac[lmac].phyaddr = MII_PHY_ANY;
|
|
}
|
|
|
|
if (OF_getencprop(child, "phy-handle", &phy,
|
|
sizeof(phy)) <= 0) {
|
|
if (bootverbose) {
|
|
device_printf(bgx->dev,
|
|
"No phy-handle in PHY node. Skipping...\n");
|
|
}
|
|
continue;
|
|
}
|
|
phy = OF_instance_to_package(phy);
|
|
/*
|
|
* Get PHY interface (MDIO bus) device.
|
|
* Driver must be already attached.
|
|
*/
|
|
mdio = OF_parent(phy);
|
|
bgx->lmac[lmac].phy_if_dev =
|
|
OF_device_from_xref(OF_xref_from_node(mdio));
|
|
if (bgx->lmac[lmac].phy_if_dev == NULL) {
|
|
if (bootverbose) {
|
|
device_printf(bgx->dev,
|
|
"Could not find interface to PHY\n");
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* Get mac address from FDT */
|
|
bgx_fdt_get_macaddr(child, bgx->lmac[lmac].mac);
|
|
|
|
bgx->lmac[lmac].lmacid = lmac;
|
|
lmac++;
|
|
if (lmac == MAX_LMAC_PER_BGX)
|
|
break;
|
|
}
|
|
if (lmac == 0) {
|
|
device_printf(bgx->dev, "Could not find matching PHY\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
return (0);
|
|
}
|