[PATCH v1 37/50] mips: octeon: Add cvmx-helper-fdt.c

Stefan Roese
2020-12-11T16:05:59Z

Import cvmx-helper-fdt.c from 2013 U-Boot. It will be used by the later
added drivers to support PCIe and networking on the MIPS Octeon II / III
platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
---

arch/mips/mach-octeon/cvmx-helper-fdt.c | 970 ++++++++++++++++++++++++
1 file changed, 970 insertions(+)
create mode 100644 arch/mips/mach-octeon/cvmx-helper-fdt.c

diff --git a/arch/mips/mach-octeon/cvmx-helper-fdt.c b/arch/mips/mach-octeon/cvmx-helper-fdt.c
new file mode 100644
index 0000000000..87bc6d2adc
--- /dev/null
+++ b/arch/mips/mach-octeon/cvmx-helper-fdt.c
@@ -0,0 +1,970 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ *
+ * FDT Helper functions similar to those provided to U-Boot.
+ */
+
+#include <log.h>
+#include <malloc.h>
+#include <net.h>
+#include <linux/delay.h>
+
+#include <mach/cvmx-regs.h>
+#include <mach/cvmx-csr.h>
+#include <mach/cvmx-bootmem.h>
+#include <mach/octeon-model.h>
+#include <mach/octeon_fdt.h>
+#include <mach/cvmx-helper.h>
+#include <mach/cvmx-helper-board.h>
+#include <mach/cvmx-helper-cfg.h>
+#include <mach/cvmx-helper-fdt.h>
+#include <mach/cvmx-helper-gpio.h>
+
+/** Structure used to get type of GPIO from device tree */
+struct gpio_compat {
+ char *compatible; /** Compatible string */
+ enum cvmx_gpio_type type; /** Type */
+ int8_t size; /** (max) Number of pins */
+};
+
+#define GPIO_REG_PCA953X_IN 0
+#define GPIO_REG_PCA953X_OUT 1
+#define GPIO_REG_PCA953X_INVERT 2
+#define GPIO_REG_PCA953X_DIR 3
+
+#define GPIO_REG_PCA957X_IN 0
+#define GPIO_REG_PCA957X_INVERT 1
+#define GPIO_REG_PCA957X_CFG 4
+#define GPIO_REG_PCA957X_OUT 5
+
+enum cvmx_i2c_mux_type { I2C_MUX, I2C_SWITCH };
+
+/** Structure used to get type of GPIO from device tree */
+struct mux_compat {
+ char *compatible; /** Compatible string */
+ enum cvmx_i2c_bus_type type; /** Mux chip type */
+ enum cvmx_i2c_mux_type mux_type; /** Type of mux */
+ u8 enable; /** Enable bit for mux */
+ u8 size; /** (max) Number of channels */
+};
+
+/**
+ * Local allocator to handle both SE and U-Boot that also zeroes out memory
+ *
+ * @param size number of bytes to allocate
+ *
+ * @return pointer to allocated memory or NULL if out of memory.
+ * Alignment is set to 8-bytes.
+ */
+void *__cvmx_fdt_alloc(size_t size)
+{
+ return calloc(size, 1);
+}
+
+/**
+ * Free allocated memory.
+ *
+ * @param ptr pointer to memory to free
+ *
+ * NOTE: This only works in U-Boot since SE does not really have a freeing
+ * mechanism. In SE the memory is zeroed out.
+ */
+void __cvmx_fdt_free(void *ptr, size_t size)
+{
+ free(ptr);
+}
+
+/**
+ * Look up a phandle and follow it to its node then return the offset of that
+ * node.
+ *
+ * @param[in] fdt_addr pointer to FDT blob
+ * @param node node to read phandle from
+ * @param[in] prop_name name of property to find
+ * @param[in,out] lenp Number of phandles, input max number
+ * @param[out] nodes Array of phandle nodes
+ *
+ * @return -ve error code on error or 0 for success
+ */
+int cvmx_fdt_lookup_phandles(const void *fdt_addr, int node,
+ const char *prop_name, int *lenp,
+ int *nodes)
+{
+ const u32 *phandles;
+ int count;
+ int i;
+
+ phandles = fdt_getprop(fdt_addr, node, prop_name, &count);
+ if (!phandles || count < 0)
+ return -FDT_ERR_NOTFOUND;
+
+ count /= 4;
+ if (count > *lenp)
+ count = *lenp;
+
+ for (i = 0; i < count; i++)
+ nodes[i] = fdt_node_offset_by_phandle(fdt_addr,
+ fdt32_to_cpu(phandles[i]));
+ *lenp = count;
+ return 0;
+}
+
+/**
+ * Given a FDT node return the CPU node number
+ *
+ * @param[in] fdt_addr Address of FDT
+ * @param node FDT node number
+ *
+ * @return CPU node number or error if negative
+ */
+int cvmx_fdt_get_cpu_node(const void *fdt_addr, int node)
+{
+ int parent = node;
+ const u32 *ranges;
+ int len = 0;
+
+ while (fdt_node_check_compatible(fdt_addr, parent, "simple-bus") != 0) {
+ parent = fdt_parent_offset(fdt_addr, parent);
+ if (parent < 0)
+ return parent;
+ }
+ ranges = fdt_getprop(fdt_addr, parent, "ranges", &len);
+ if (!ranges)
+ return len;
+
+ if (len == 0)
+ return 0;
+
+ if (len < 24)
+ return -FDT_ERR_TRUNCATED;
+
+ return fdt32_to_cpu(ranges[2]) / 0x10;
+}
+
+/**
+ * Get the total size of the flat device tree
+ *
+ * @param[in] fdt_addr Address of FDT
+ *
+ * @return Size of flat device tree in bytes or error if negative.
+ */
+int cvmx_fdt_get_fdt_size(const void *fdt_addr)
+{
+ int rc;
+
+ rc = fdt_check_header(fdt_addr);
+ if (rc)
+ return rc;
+ return fdt_totalsize(fdt_addr);
+}
+
+/**
+ * Returns if a node is compatible with one of the items in the string list
+ *
+ * @param[in] fdt_addr Pointer to flat device tree
+ * @param node Node offset to check
+ * @param[in] strlist Array of FDT device compatibility strings,
+ * must end with NULL or empty string.
+ *
+ * @return 0 if@least one item matches, 1 if no matches
+ */
+int cvmx_fdt_node_check_compatible_list(const void *fdt_addr, int node, const char *const *strlist)
+{
+ while (*strlist && **strlist) {
+ if (!fdt_node_check_compatible(fdt_addr, node, *strlist))
+ return 0;
+ strlist++;
+ }
+ return 1;
+}
+
+/**
+ * Given a FDT node, return the next compatible node.
+ *
+ * @param[in] fdt_addr Pointer to flat device tree
+ * @param start_offset Starting node offset or -1 to find the first
+ * @param strlist Array of FDT device compatibility strings, must
+ * end with NULL or empty string.
+ *
+ * @return next matching node or -1 if no more matches.
+ */
+int cvmx_fdt_node_offset_by_compatible_list(const void *fdt_addr, int startoffset,
+ const char *const *strlist)
+{
+ int offset;
+
+ for (offset = fdt_next_node(fdt_addr, startoffset, NULL); offset >= 0;
+ offset = fdt_next_node(fdt_addr, offset, NULL)) {
+ if (!cvmx_fdt_node_check_compatible_list(fdt_addr, offset, strlist))
+ return offset;
+ }
+ return -1;
+}
+
+/**
+ * Attaches a PHY to a SFP or QSFP.
+ *
+ * @param sfp sfp to attach PHY to
+ * @param phy_info phy descriptor to attach or NULL to detach
+ */
+void cvmx_sfp_attach_phy(struct cvmx_fdt_sfp_info *sfp, struct cvmx_phy_info *phy_info)
+{
+ sfp->phy_info = phy_info;
+ if (phy_info)
+ phy_info->sfp_info = sfp;
+}
+
+/**
+ * Assigns an IPD port to a SFP slot
+ *
+ * @param sfp Handle to SFP data structure
+ * @param ipd_port Port to assign it to
+ *
+ * @return 0 for success, -1 on error
+ */
+int cvmx_sfp_set_ipd_port(struct cvmx_fdt_sfp_info *sfp, int ipd_port)
+{
+ int i;
+
+ if (sfp->is_qsfp) {
+ int xiface;
+ cvmx_helper_interface_mode_t mode;
+
+ xiface = cvmx_helper_get_interface_num(ipd_port);
+ mode = cvmx_helper_interface_get_mode(xiface);
+ sfp->ipd_port[0] = ipd_port;
+
+ switch (mode) {
+ case CVMX_HELPER_INTERFACE_MODE_SGMII:
+ case CVMX_HELPER_INTERFACE_MODE_XFI:
+ case CVMX_HELPER_INTERFACE_MODE_10G_KR:
+ for (i = 1; i < 4; i++)
+ sfp->ipd_port[i] = cvmx_helper_get_ipd_port(xiface, i);
+ break;
+ case CVMX_HELPER_INTERFACE_MODE_XLAUI:
+ case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
+ sfp->ipd_port[0] = ipd_port;
+ for (i = 1; i < 4; i++)
+ sfp->ipd_port[i] = -1;
+ break;
+ default:
+ debug("%s: Interface mode %s for interface 0x%x, ipd_port %d not supported for QSFP\n",
+ __func__, cvmx_helper_interface_mode_to_string(mode), xiface,
+ ipd_port);
+ return -1;
+ }
+ } else {
+ sfp->ipd_port[0] = ipd_port;
+ for (i = 1; i < 4; i++)
+ sfp->ipd_port[i] = -1;
+ }
+ return 0;
+}
+
+/**
+ * Parses all of the channels assigned to a VSC7224 device
+ *
+ * @param[in] fdt_addr Address of flat device tree
+ * @param of_offset Offset of vsc7224 node
+ * @param[in,out] vsc7224 Data structure to hold the data
+ *
+ * @return 0 for success, -1 on error
+ */
+static int cvmx_fdt_parse_vsc7224_channels(const void *fdt_addr, int of_offset,
+ struct cvmx_vsc7224 *vsc7224)
+{
+ int parent_offset = of_offset;
+ int err = 0;
+ int reg;
+ int num_chan = 0;
+ struct cvmx_vsc7224_chan *channel;
+ struct cvmx_fdt_sfp_info *sfp_info;
+ int len;
+ int num_taps;
+ int i;
+ const u32 *tap_values;
+ int of_mac;
+ int xiface, index;
+ bool is_tx;
+ bool is_qsfp;
+ const char *mac_str;
+
+ debug("%s(%p, %d, %s)\n", __func__, fdt_addr, of_offset, vsc7224->name);
+ do {
+ /* Walk through all channels */
+ of_offset = fdt_node_offset_by_compatible(fdt_addr, of_offset,
+ "vitesse,vsc7224-channel");
+ if (of_offset == -FDT_ERR_NOTFOUND) {
+ break;
+ } else if (of_offset < 0) {
+ debug("%s: Failed finding compatible channel\n",
+ __func__);
+ err = -1;
+ break;
+ }
+ if (fdt_parent_offset(fdt_addr, of_offset) != parent_offset)
+ break;
+ reg = cvmx_fdt_get_int(fdt_addr, of_offset, "reg", -1);
+ if (reg < 0 || reg > 3) {
+ debug("%s: channel reg is either not present or out of range\n",
+ __func__);
+ err = -1;
+ break;
+ }
+ is_tx = cvmx_fdt_get_bool(fdt_addr, of_offset, "direction-tx");
+
+ debug("%s(%s): Adding %cx channel %d\n",
+ __func__, vsc7224->name, is_tx ? 't' : 'r',
+ reg);
+ tap_values = (const uint32_t *)fdt_getprop(fdt_addr, of_offset, "taps", &len);
+ if (!tap_values) {
+ debug("%s: Error: no taps defined for vsc7224 channel %d\n",
+ __func__, reg);
+ err = -1;
+ break;
+ }
+
+ if (vsc7224->channel[reg]) {
+ debug("%s: Error: channel %d already assigned at %p\n",
+ __func__, reg,
+ vsc7224->channel[reg]);
+ err = -1;
+ break;
+ }
+ if (len % 16) {
+ debug("%s: Error: tap format error for channel %d\n",
+ __func__, reg);
+ err = -1;
+ break;
+ }
+ num_taps = len / 16;
+ debug("%s: Adding %d taps\n", __func__, num_taps);
+
+ channel = __cvmx_fdt_alloc(sizeof(*channel) +
+ num_taps * sizeof(struct cvmx_vsc7224_tap));
+ if (!channel) {
+ debug("%s: Out of memory\n", __func__);
+ err = -1;
+ break;
+ }
+ vsc7224->channel[reg] = channel;
+ channel->num_taps = num_taps;
+ channel->lane = reg;
+ channel->of_offset = of_offset;
+ channel->is_tx = is_tx;
+ channel->pretap_disable = cvmx_fdt_get_bool(fdt_addr, of_offset, "pretap-disable");
+ channel->posttap_disable =
+ cvmx_fdt_get_bool(fdt_addr, of_offset, "posttap-disable");
+ channel->vsc7224 = vsc7224;
+ /* Read all the tap values */
+ for (i = 0; i < num_taps; i++) {
+ channel->taps[i].len = fdt32_to_cpu(tap_values[i * 4 + 0]);
+ channel->taps[i].main_tap = fdt32_to_cpu(tap_values[i * 4 + 1]);
+ channel->taps[i].pre_tap = fdt32_to_cpu(tap_values[i * 4 + 2]);
+ channel->taps[i].post_tap = fdt32_to_cpu(tap_values[i * 4 + 3]);
+ debug("%s: tap %d: len: %d, main_tap: 0x%x, pre_tap: 0x%x, post_tap: 0x%x\n",
+ __func__, i, channel->taps[i].len, channel->taps[i].main_tap,
+ channel->taps[i].pre_tap, channel->taps[i].post_tap);
+ }
+ /* Now find out which interface it's mapped to */
+ channel->ipd_port = -1;
+
+ mac_str = "sfp-mac";
+ if (fdt_getprop(fdt_addr, of_offset, mac_str, NULL)) {
+ is_qsfp = false;
+ } else if (fdt_getprop(fdt_addr, of_offset, "qsfp-mac", NULL)) {
+ is_qsfp = true;
+ mac_str = "qsfp-mac";
+ } else {
+ debug("%s: Error: MAC not found for %s channel %d\n", __func__,
+ vsc7224->name, reg);
+ return -1;
+ }
+ of_mac = cvmx_fdt_lookup_phandle(fdt_addr, of_offset, mac_str);
+ if (of_mac < 0) {
+ debug("%s: Error %d with MAC %s phandle for %s\n", __func__, of_mac,
+ mac_str, vsc7224->name);
+ return -1;
+ }
+
+ debug("%s: Found mac at offset %d\n", __func__, of_mac);
+ err = cvmx_helper_cfg_get_xiface_index_by_fdt_node_offset(of_mac, &xiface, &index);
+ if (!err) {
+ channel->xiface = xiface;
+ channel->index = index;
+ channel->ipd_port = cvmx_helper_get_ipd_port(xiface, index);
+
+ debug("%s: Found MAC, xiface: 0x%x, index: %d, ipd port: %d\n", __func__,
+ xiface, index, channel->ipd_port);
+ if (channel->ipd_port >= 0) {
+ cvmx_helper_cfg_set_vsc7224_chan_info(xiface, index, channel);
+ debug("%s: Storing config channel for xiface 0x%x, index %d\n",
+ __func__, xiface, index);
+ }
+ sfp_info = cvmx_helper_cfg_get_sfp_info(xiface, index);
+ if (!sfp_info) {
+ debug("%s: Warning: no (Q)SFP+ slot found for xinterface 0x%x, index %d for channel %d\n",
+ __func__, xiface, index, channel->lane);
+ continue;
+ }
+
+ /* Link it */
+ channel->next = sfp_info->vsc7224_chan;
+ if (sfp_info->vsc7224_chan)
+ sfp_info->vsc7224_chan->prev = channel;
+ sfp_info->vsc7224_chan = channel;
+ sfp_info->is_vsc7224 = true;
+ debug("%s: Registering VSC7224 %s channel %d with SFP %s\n", __func__,
+ vsc7224->name, channel->lane, sfp_info->name);
+ if (!sfp_info->mod_abs_changed) {
+ debug("%s: Registering cvmx_sfp_vsc7224_mod_abs_changed at %p for xinterface 0x%x, index %d\n",
+ __func__, &cvmx_sfp_vsc7224_mod_abs_changed, xiface, index);
+ cvmx_sfp_register_mod_abs_changed(
+ sfp_info,
+ &cvmx_sfp_vsc7224_mod_abs_changed,
+ NULL);
+ }
+ }
+ } while (!err && num_chan < 4);
+
+ return err;
+}
+
+/**
+ * @INTERNAL
+ * Parses all instances of the Vitesse VSC7224 reclocking chip
+ *
+ * @param[in] fdt_addr Address of flat device tree
+ *
+ * @return 0 for success, error otherwise
+ */
+int __cvmx_fdt_parse_vsc7224(const void *fdt_addr)
+{
+ int of_offset = -1;
+ struct cvmx_vsc7224 *vsc7224 = NULL;
+ struct cvmx_fdt_gpio_info *gpio_info = NULL;
+ int err = 0;
+ int of_parent;
+ static bool parsed;
+
+ debug("%s(%p)\n", __func__, fdt_addr);
+
+ if (parsed) {
+ debug("%s: Already parsed\n", __func__);
+ return 0;
+ }
+ do {
+ of_offset = fdt_node_offset_by_compatible(fdt_addr, of_offset,
+ "vitesse,vsc7224");
+ debug("%s: of_offset: %d\n", __func__, of_offset);
+ if (of_offset == -FDT_ERR_NOTFOUND) {
+ break;
+ } else if (of_offset < 0) {
+ err = -1;
+ debug("%s: Error %d parsing FDT\n",
+ __func__, of_offset);
+ break;
+ }
+
+ vsc7224 = __cvmx_fdt_alloc(sizeof(*vsc7224));
+
+ if (!vsc7224) {
+ debug("%s: Out of memory!\n", __func__);
+ return -1;
+ }
+ vsc7224->of_offset = of_offset;
+ vsc7224->i2c_addr = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "reg", -1);
+ of_parent = fdt_parent_offset(fdt_addr, of_offset);
+ vsc7224->i2c_bus = cvmx_fdt_get_i2c_bus(fdt_addr, of_parent);
+ if (vsc7224->i2c_addr < 0) {
+ debug("%s: Error: reg field missing\n", __func__);
+ err = -1;
+ break;
+ }
+ if (!vsc7224->i2c_bus) {
+ debug("%s: Error getting i2c bus\n", __func__);
+ err = -1;
+ break;
+ }
+ vsc7224->name = fdt_get_name(fdt_addr, of_offset, NULL);
+ debug("%s: Adding %s\n", __func__, vsc7224->name);
+ if (fdt_getprop(fdt_addr, of_offset, "reset", NULL)) {
+ gpio_info = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "reset");
+ vsc7224->reset_gpio = gpio_info;
+ }
+ if (fdt_getprop(fdt_addr, of_offset, "los", NULL)) {
+ gpio_info = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "los");
+ vsc7224->los_gpio = gpio_info;
+ }
+ debug("%s: Parsing channels\n", __func__);
+ err = cvmx_fdt_parse_vsc7224_channels(fdt_addr, of_offset, vsc7224);
+ if (err) {
+ debug("%s: Error parsing VSC7224 channels\n", __func__);
+ break;
+ }
+ } while (of_offset > 0);
+
+ if (err) {
+ debug("%s(): Error\n", __func__);
+ if (vsc7224) {
+ if (vsc7224->reset_gpio)
+ __cvmx_fdt_free(vsc7224->reset_gpio, sizeof(*vsc7224->reset_gpio));
+ if (vsc7224->los_gpio)
+ __cvmx_fdt_free(vsc7224->los_gpio, sizeof(*vsc7224->los_gpio));
+ if (vsc7224->i2c_bus)
+ cvmx_fdt_free_i2c_bus(vsc7224->i2c_bus);
+ __cvmx_fdt_free(vsc7224, sizeof(*vsc7224));
+ }
+ }
+ if (!err)
+ parsed = true;
+
+ return err;
+}
+
+/**
+ * @INTERNAL
+ * Parses all instances of the Avago AVSP5410 gearbox phy
+ *
+ * @param[in] fdt_addr Address of flat device tree
+ *
+ * @return 0 for success, error otherwise
+ */
+int __cvmx_fdt_parse_avsp5410(const void *fdt_addr)
+{
+ int of_offset = -1;
+ struct cvmx_avsp5410 *avsp5410 = NULL;
+ struct cvmx_fdt_sfp_info *sfp_info;
+ int err = 0;
+ int of_parent;
+ static bool parsed;
+ int of_mac;
+ int xiface, index;
+ bool is_qsfp;
+ const char *mac_str;
+
+ debug("%s(%p)\n", __func__, fdt_addr);
+
+ if (parsed) {
+ debug("%s: Already parsed\n", __func__);
+ return 0;
+ }
+
+ do {
+ of_offset = fdt_node_offset_by_compatible(fdt_addr, of_offset,
+ "avago,avsp-5410");
+ debug("%s: of_offset: %d\n", __func__, of_offset);
+ if (of_offset == -FDT_ERR_NOTFOUND) {
+ break;
+ } else if (of_offset < 0) {
+ err = -1;
+ debug("%s: Error %d parsing FDT\n", __func__, of_offset);
+ break;
+ }
+
+ avsp5410 = __cvmx_fdt_alloc(sizeof(*avsp5410));
+
+ if (!avsp5410) {
+ debug("%s: Out of memory!\n", __func__);
+ return -1;
+ }
+ avsp5410->of_offset = of_offset;
+ avsp5410->i2c_addr = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "reg", -1);
+ of_parent = fdt_parent_offset(fdt_addr, of_offset);
+ avsp5410->i2c_bus = cvmx_fdt_get_i2c_bus(fdt_addr, of_parent);
+ if (avsp5410->i2c_addr < 0) {
+ debug("%s: Error: reg field missing\n", __func__);
+ err = -1;
+ break;
+ }
+ if (!avsp5410->i2c_bus) {
+ debug("%s: Error getting i2c bus\n", __func__);
+ err = -1;
+ break;
+ }
+ avsp5410->name = fdt_get_name(fdt_addr, of_offset, NULL);
+ debug("%s: Adding %s\n", __func__, avsp5410->name);
+
+ /* Now find out which interface it's mapped to */
+ avsp5410->ipd_port = -1;
+
+ mac_str = "sfp-mac";
+ if (fdt_getprop(fdt_addr, of_offset, mac_str, NULL)) {
+ is_qsfp = false;
+ } else if (fdt_getprop(fdt_addr, of_offset, "qsfp-mac", NULL)) {
+ is_qsfp = true;
+ mac_str = "qsfp-mac";
+ } else {
+ debug("%s: Error: MAC not found for %s\n", __func__, avsp5410->name);
+ return -1;
+ }
+ of_mac = cvmx_fdt_lookup_phandle(fdt_addr, of_offset, mac_str);
+ if (of_mac < 0) {
+ debug("%s: Error %d with MAC %s phandle for %s\n", __func__, of_mac,
+ mac_str, avsp5410->name);
+ return -1;
+ }
+
+ debug("%s: Found mac at offset %d\n", __func__, of_mac);
+ err = cvmx_helper_cfg_get_xiface_index_by_fdt_node_offset(of_mac, &xiface, &index);
+ if (!err) {
+ avsp5410->xiface = xiface;
+ avsp5410->index = index;
+ avsp5410->ipd_port = cvmx_helper_get_ipd_port(xiface, index);
+
+ debug("%s: Found MAC, xiface: 0x%x, index: %d, ipd port: %d\n", __func__,
+ xiface, index, avsp5410->ipd_port);
+ if (avsp5410->ipd_port >= 0) {
+ cvmx_helper_cfg_set_avsp5410_info(xiface, index, avsp5410);
+ debug("%s: Storing config phy for xiface 0x%x, index %d\n",
+ __func__, xiface, index);
+ }
+ sfp_info = cvmx_helper_cfg_get_sfp_info(xiface, index);
+ if (!sfp_info) {
+ debug("%s: Warning: no (Q)SFP+ slot found for xinterface 0x%x, index %d\n",
+ __func__, xiface, index);
+ continue;
+ }
+
+ sfp_info->is_avsp5410 = true;
+ sfp_info->avsp5410 = avsp5410;
+ debug("%s: Registering AVSP5410 %s with SFP %s\n", __func__, avsp5410->name,
+ sfp_info->name);
+ if (!sfp_info->mod_abs_changed) {
+ debug("%s: Registering cvmx_sfp_avsp5410_mod_abs_changed at %p for xinterface 0x%x, index %d\n",
+ __func__, &cvmx_sfp_avsp5410_mod_abs_changed, xiface, index);
+ cvmx_sfp_register_mod_abs_changed(
+ sfp_info,
+ &cvmx_sfp_avsp5410_mod_abs_changed,
+ NULL);
+ }
+ }
+ } while (of_offset > 0);
+
+ if (err) {
+ debug("%s(): Error\n", __func__);
+ if (avsp5410) {
+ if (avsp5410->i2c_bus)
+ cvmx_fdt_free_i2c_bus(avsp5410->i2c_bus);
+ __cvmx_fdt_free(avsp5410, sizeof(*avsp5410));
+ }
+ }
+ if (!err)
+ parsed = true;
+
+ return err;
+}
+
+/**
+ * Parse QSFP GPIOs for SFP
+ *
+ * @param[in] fdt_addr Pointer to flat device tree
+ * @param of_offset Offset of QSFP node
+ * @param[out] sfp_info Pointer to sfp info to fill in
+ *
+ * @return 0 for success
+ */
+static int cvmx_parse_qsfp(const void *fdt_addr, int of_offset, struct cvmx_fdt_sfp_info *sfp_info)
+{
+ sfp_info->select = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "select");
+ sfp_info->mod_abs = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "mod_prs");
+ sfp_info->reset = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "reset");
+ sfp_info->interrupt = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "interrupt");
+ sfp_info->lp_mode = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "lp_mode");
+ return 0;
+}
+
+/**
+ * Parse SFP GPIOs for SFP
+ *
+ * @param[in] fdt_addr Pointer to flat device tree
+ * @param of_offset Offset of SFP node
+ * @param[out] sfp_info Pointer to sfp info to fill in
+ *
+ * @return 0 for success
+ */
+static int cvmx_parse_sfp(const void *fdt_addr, int of_offset, struct cvmx_fdt_sfp_info *sfp_info)
+{
+ sfp_info->mod_abs = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "mod_abs");
+ sfp_info->rx_los = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "rx_los");
+ sfp_info->tx_disable = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "tx_disable");
+ sfp_info->tx_error = cvmx_fdt_gpio_get_info_phandle(fdt_addr, of_offset, "tx_error");
+ return 0;
+}
+
+/**
+ * Parse SFP/QSFP EEPROM and diag
+ *
+ * @param[in] fdt_addr Pointer to flat device tree
+ * @param of_offset Offset of SFP node
+ * @param[out] sfp_info Pointer to sfp info to fill in
+ *
+ * @return 0 for success, -1 on error
+ */
+static int cvmx_parse_sfp_eeprom(const void *fdt_addr, int of_offset,
+ struct cvmx_fdt_sfp_info *sfp_info)
+{
+ int of_eeprom;
+ int of_diag;
+
+ debug("%s(%p, %d, %s)\n", __func__, fdt_addr, of_offset, sfp_info->name);
+ of_eeprom = cvmx_fdt_lookup_phandle(fdt_addr, of_offset, "eeprom");
+ if (of_eeprom < 0) {
+ debug("%s: Missing \"eeprom\" from device tree for %s\n", __func__, sfp_info->name);
+ return -1;
+ }
+
+ sfp_info->i2c_bus = cvmx_fdt_get_i2c_bus(fdt_addr, fdt_parent_offset(fdt_addr, of_eeprom));
+ sfp_info->i2c_eeprom_addr = cvmx_fdt_get_int(fdt_addr, of_eeprom, "reg", 0x50);
+
+ debug("%s(%p, %d, %s, %d)\n", __func__, fdt_addr, of_offset, sfp_info->name,
+ sfp_info->i2c_eeprom_addr);
+
+ if (!sfp_info->i2c_bus) {
+ debug("%s: Error: could not determine i2c bus for eeprom for %s\n", __func__,
+ sfp_info->name);
+ return -1;
+ }
+ of_diag = cvmx_fdt_lookup_phandle(fdt_addr, of_offset, "diag");
+ if (of_diag >= 0)
+ sfp_info->i2c_diag_addr = cvmx_fdt_get_int(fdt_addr, of_diag, "reg", 0x51);
+ else
+ sfp_info->i2c_diag_addr = 0x51;
+ return 0;
+}
+
+/**
+ * Parse SFP information from device tree
+ *
+ * @param[in] fdt_addr Address of flat device tree
+ *
+ * @return pointer to sfp info or NULL if error
+ */
+struct cvmx_fdt_sfp_info *cvmx_helper_fdt_parse_sfp_info(const void *fdt_addr, int of_offset)
+{
+ struct cvmx_fdt_sfp_info *sfp_info = NULL;
+ int err = -1;
+ bool is_qsfp;
+
+ if (!fdt_node_check_compatible(fdt_addr, of_offset, "ethernet,sfp-slot")) {
+ is_qsfp = false;
+ } else if (!fdt_node_check_compatible(fdt_addr, of_offset, "ethernet,qsfp-slot")) {
+ is_qsfp = true;
+ } else {
+ debug("%s: Error: incompatible sfp/qsfp slot, compatible=%s\n", __func__,
+ (char *)fdt_getprop(fdt_addr, of_offset, "compatible", NULL));
+ goto error_exit;
+ }
+
+ debug("%s: %ssfp module found at offset %d\n", __func__, is_qsfp ? "q" : "", of_offset);
+ sfp_info = __cvmx_fdt_alloc(sizeof(*sfp_info));
+ if (!sfp_info) {
+ debug("%s: Error: out of memory\n", __func__);
+ goto error_exit;
+ }
+ sfp_info->name = fdt_get_name(fdt_addr, of_offset, NULL);
+ sfp_info->of_offset = of_offset;
+ sfp_info->is_qsfp = is_qsfp;
+ sfp_info->last_mod_abs = -1;
+ sfp_info->last_rx_los = -1;
+
+ if (is_qsfp)
+ err = cvmx_parse_qsfp(fdt_addr, of_offset, sfp_info);
+ else
+ err = cvmx_parse_sfp(fdt_addr, of_offset, sfp_info);
+ if (err) {
+ debug("%s: Error in %s parsing %ssfp GPIO info\n", __func__, sfp_info->name,
+ is_qsfp ? "q" : "");
+ goto error_exit;
+ }
+ debug("%s: Parsing %ssfp module eeprom\n", __func__, is_qsfp ? "q" : "");
+ err = cvmx_parse_sfp_eeprom(fdt_addr, of_offset, sfp_info);
+ if (err) {
+ debug("%s: Error parsing eeprom info for %s\n", __func__, sfp_info->name);
+ goto error_exit;
+ }
+
+ /* Register default check for mod_abs changed */
+ if (!err)
+ cvmx_sfp_register_check_mod_abs(sfp_info, cvmx_sfp_check_mod_abs, NULL);
+
+error_exit:
+ /* Note: we don't free any data structures on error since it gets
+ * rather complicated with i2c buses and whatnot.
+ */
+ return err ? NULL : sfp_info;
+}
+
+/**
+ * @INTERNAL
+ * Parse a slice of the Inphi/Cortina CS4343 in the device tree
+ *
+ * @param[in] fdt_addr Address of flat device tree
+ * @param of_offset fdt offset of slice
+ * @param phy_info phy_info data structure
+ *
+ * @return slice number if non-negative, otherwise error
+ */
+static int cvmx_fdt_parse_cs4343_slice(const void *fdt_addr, int of_offset,
+ struct cvmx_phy_info *phy_info)
+{
+ struct cvmx_cs4343_slice_info *slice;
+ int reg;
+ int reg_offset;
+
+ reg = cvmx_fdt_get_int(fdt_addr, of_offset, "reg", -1);
+ reg_offset = cvmx_fdt_get_int(fdt_addr, of_offset, "slice_offset", -1);
+
+ if (reg < 0 || reg >= 4) {
+ debug("%s(%p, %d, %p): Error: reg %d undefined or out of range\n", __func__,
+ fdt_addr, of_offset, phy_info, reg);
+ return -1;
+ }
+ if (reg_offset % 0x1000 || reg_offset > 0x3000 || reg_offset < 0) {
+ debug("%s(%p, %d, %p): Error: reg_offset 0x%x undefined or out of range\n",
+ __func__, fdt_addr, of_offset, phy_info, reg_offset);
+ return -1;
+ }
+ if (!phy_info->cs4343_info) {
+ debug("%s: Error: phy info cs4343 datastructure is NULL\n", __func__);
+ return -1;
+ }
+ debug("%s(%p, %d, %p): %s, reg: %d, slice offset: 0x%x\n", __func__, fdt_addr, of_offset,
+ phy_info, fdt_get_name(fdt_addr, of_offset, NULL), reg, reg_offset);
+ slice = &phy_info->cs4343_info->slice[reg];
+ slice->name = fdt_get_name(fdt_addr, of_offset, NULL);
+ slice->mphy = phy_info->cs4343_info;
+ slice->phy_info = phy_info;
+ slice->of_offset = of_offset;
+ slice->slice_no = reg;
+ slice->reg_offset = reg_offset;
+ /* SR settings */
+ slice->sr_stx_cmode_res = cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-cmode-res", 3);
+ slice->sr_stx_drv_lower_cm =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-drv-lower-cm", 8);
+ slice->sr_stx_level = cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-level", 0x1c);
+ slice->sr_stx_pre_peak = cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-pre-peak", 1);
+ slice->sr_stx_muxsubrate_sel =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-muxsubrate-sel", 0);
+ slice->sr_stx_post_peak = cvmx_fdt_get_int(fdt_addr, of_offset, "sr-stx-post-peak", 8);
+ /* CX settings */
+ slice->cx_stx_cmode_res = cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-cmode-res", 3);
+ slice->cx_stx_drv_lower_cm =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-drv-lower-cm", 8);
+ slice->cx_stx_level = cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-level", 0x1c);
+ slice->cx_stx_pre_peak = cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-pre-peak", 1);
+ slice->cx_stx_muxsubrate_sel =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-muxsubrate-sel", 0);
+ slice->cx_stx_post_peak = cvmx_fdt_get_int(fdt_addr, of_offset, "cx-stx-post-peak", 0xC);
+ /* 1000Base-X settings */
+ /* CX settings */
+ slice->basex_stx_cmode_res =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "basex-stx-cmode-res", 3);
+ slice->basex_stx_drv_lower_cm =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "basex-stx-drv-lower-cm", 8);
+ slice->basex_stx_level = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "basex-stx-level", 0x1c);
+ slice->basex_stx_pre_peak = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "basex-stx-pre-peak", 1);
+ slice->basex_stx_muxsubrate_sel =
+ cvmx_fdt_get_int(fdt_addr, of_offset,
+ "basex-stx-muxsubrate-sel", 0);
+ slice->basex_stx_post_peak =
+ cvmx_fdt_get_int(fdt_addr, of_offset, "basex-stx-post-peak", 8);
+ /* Get the link LED gpio pin */
+ slice->link_gpio = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "link-led-gpio", -1);
+ slice->error_gpio = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "error-led-gpio", -1);
+ slice->los_gpio = cvmx_fdt_get_int(fdt_addr, of_offset,
+ "los-input-gpio", -1);
+ slice->link_inverted = cvmx_fdt_get_bool(fdt_addr, of_offset,
+ "link-led-gpio-inverted");
+ slice->error_inverted = cvmx_fdt_get_bool(fdt_addr, of_offset,
+ "error-led-gpio-inverted");
+ slice->los_inverted = cvmx_fdt_get_bool(fdt_addr, of_offset,
+ "los-input-gpio-inverted");
+ /* Convert GPIOs to be die based if they're not already */
+ if (slice->link_gpio > 4 && slice->link_gpio <= 8)
+ slice->link_gpio -= 4;
+ if (slice->error_gpio > 4 && slice->error_gpio <= 8)
+ slice->error_gpio -= 4;
+ if (slice->los_gpio > 4 && slice->los_gpio <= 8)
+ slice->los_gpio -= 4;
+
+ return reg;
+}
+
+/**
+ * @INTERNAL
+ * Parses either a CS4343 phy or a slice of the phy from the device tree
+ * @param[in] fdt_addr Address of FDT
+ * @param of_offset offset of slice or phy in device tree
+ * @param phy_info phy_info data structure to fill in
+ *
+ * @return 0 for success, -1 on error
+ */
+int cvmx_fdt_parse_cs4343(const void *fdt_addr, int of_offset, struct cvmx_phy_info *phy_info)
+{
+ int of_slice = -1;
+ struct cvmx_cs4343_info *cs4343;
+ int err = -1;
+ int reg;
+
+ debug("%s(%p, %d, %p): %s (%s)\n", __func__,
+ fdt_addr, of_offset, phy_info,
+ fdt_get_name(fdt_addr, of_offset, NULL),
+ (const char *)fdt_getprop(fdt_addr, of_offset, "compatible", NULL));
+
+ if (!phy_info->cs4343_info)
+ phy_info->cs4343_info = __cvmx_fdt_alloc(sizeof(struct cvmx_cs4343_info));
+ if (!phy_info->cs4343_info) {
+ debug("%s: Error: out of memory!\n", __func__);
+ return -1;
+ }
+ cs4343 = phy_info->cs4343_info;
+ /* If we're passed to a slice then process only that slice */
+ if (!fdt_node_check_compatible(fdt_addr, of_offset, "cortina,cs4343-slice")) {
+ err = 0;
+ of_slice = of_offset;
+ of_offset = fdt_parent_offset(fdt_addr, of_offset);
+ reg = cvmx_fdt_parse_cs4343_slice(fdt_addr, of_slice, phy_info);
+ if (reg >= 0)
+ phy_info->cs4343_slice_info = &cs4343->slice[reg];
+ else
+ err = reg;
+ } else if (!fdt_node_check_compatible(fdt_addr, of_offset,
+ "cortina,cs4343")) {
+ /* Walk through and process all of the slices */
+ of_slice =
+ fdt_node_offset_by_compatible(fdt_addr, of_offset, "cortina,cs4343-slice");
+ while (of_slice > 0 && fdt_parent_offset(fdt_addr, of_slice) ==
+ of_offset) {
+ debug("%s: Parsing slice %s\n", __func__,
+ fdt_get_name(fdt_addr, of_slice, NULL));
+ err = cvmx_fdt_parse_cs4343_slice(fdt_addr, of_slice,
+ phy_info);
+ if (err < 0)
+ break;
+ of_slice = fdt_node_offset_by_compatible(fdt_addr,
+ of_slice,
+ "cortina,cs4343-slice");
+ }
+ } else {
+ debug("%s: Error: unknown compatible string %s for %s\n", __func__,
+ (const char *)fdt_getprop(fdt_addr, of_offset,
+ "compatible", NULL),
+ fdt_get_name(fdt_addr, of_offset, NULL));
+ }
+
+ if (err >= 0) {
+ cs4343->name = fdt_get_name(fdt_addr, of_offset, NULL);
+ cs4343->phy_info = phy_info;
+ cs4343->of_offset = of_offset;
+ }
+
+ return err < 0 ? -1 : 0;
+}
--
2.29.2