From: Tom Kavanagh <tkavanagh@xxxxxxxxxxx>
Every Juniper platform contains a CBD (Control Board) FPGA.
While each CBD FPGA is different, a common abstact API makes
handling them common for every platform and the same parts
they have can be factored out.
The supported CBDs are PTX1K, PTX21K, PTX3K & PTX5K.
Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
Signed-off-by: Guenter Roeck <groeck@xxxxxxxxxxx>
Signed-off-by: JawaharBalaji Thirumalaisamy <jawaharb@xxxxxxxxxxx>
Signed-off-by: Mohammad Kamil <mkamil@xxxxxxxxxxx>
Signed-off-by: Tom Kavanagh <tkavanagh@xxxxxxxxxxx>
Signed-off-by: Debjit Ghosh <dghosh@xxxxxxxxxxx>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
drivers/staging/jnx/Kconfig | 34 ++
drivers/staging/jnx/Makefile | 5 +
drivers/staging/jnx/jnx-cbc-ptx1k.c | 242 +++++++++++++
drivers/staging/jnx/jnx-cbd-fpga-common.c | 332 +++++++++++++++++
drivers/staging/jnx/jnx-cbd-fpga-common.h | 27 ++
drivers/staging/jnx/jnx-cbd-fpga-core.c | 540 ++++++++++++++++++++++++++++
drivers/staging/jnx/jnx-cbd-fpga-core.h | 68 ++++
drivers/staging/jnx/jnx-cbd-fpga-platdata.h | 51 +++
drivers/staging/jnx/jnx-cbd-fpga-ptx1k.c | 134 +++++++
drivers/staging/jnx/jnx-cbd-fpga-ptx21k.c | 143 ++++++++
drivers/staging/jnx/jnx-cbd-fpga-ptx3k.c | 111 ++++++
drivers/staging/jnx/jnx-cbd-fpga-ptx5k.c | 107 ++++++
12 files changed, 1794 insertions(+)
create mode 100644 drivers/staging/jnx/jnx-cbc-ptx1k.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-common.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-common.h
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-core.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-core.h
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-platdata.h
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-ptx1k.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-ptx21k.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-ptx3k.c
create mode 100644 drivers/staging/jnx/jnx-cbd-fpga-ptx5k.c
diff --git a/drivers/staging/jnx/Kconfig b/drivers/staging/jnx/Kconfig
index 4c38fc2..cd29276 100644
--- a/drivers/staging/jnx/Kconfig
+++ b/drivers/staging/jnx/Kconfig
@@ -34,6 +34,40 @@ config JNX_CONNECTOR
This driver can also be built as a module. If so, the module
will be called jnx-connector.
+config JNX_CBD_FPGA
+ tristate "Juniper Generic CBD FPGA"
+ select I2C_MUX
+ help
+ Driver to support the Juniper Control Board (CBD) FPGA. Provides all
+ common functionality for device across all supported juniper platforms.
+
+ This driver can also be built as a module. If so, the module
+ will be called jnx-cbd-fpga.
+
+config JNX_CBD_FPGA_PTX21K
+ tristate "Juniper PTX21K CBC FPGA"
+ depends on JNX_SYSTEM && MFD_JUNIPER_CBC && JNX_PTX21K_BOARDS
+ depends on JNX_PTX21K_RCB
+ default m
+ help
+ Driver to support the Juniper Control Board (CBC) FPGA in PTX21K.
+ Provides hooks for the common fpga handling core for these
+ particular Juniper Boards.
+
+ When compiled as a module it is included in jnx-cbd-fpga.
+
+config JNX_CBD_FPGA_PTX1K
+ tristate "Juniper PTX1K CBC FPGA"
+ depends on JNX_SYSTEM && MFD_JUNIPER_CBC && JNX_PTX1K_BOARDS
+ depends on JNX_CBD_FPGA_PTX21K
+ help
+ Driver to support the Juniper Control Board (CBC) FPGA in PTX1K.
+ Provides all common functionality for device across platforms and
+ hooks for the common fpga handling core for these particular
+ Juniper Boards.
+
+ When compiled as a module it is included in jnx-cbd-fpga.
+
endmenu
config JNX_COMMON_PCI
diff --git a/drivers/staging/jnx/Makefile b/drivers/staging/jnx/Makefile
index c89e701..b937896 100644
--- a/drivers/staging/jnx/Makefile
+++ b/drivers/staging/jnx/Makefile
@@ -7,3 +7,8 @@ obj-$(CONFIG_JNX_CHIP_PCI_QUIRKS)+= jnx-chip-pci-quirks.o
obj-$(CONFIG_JNX_COMMON_PCI) += jnx_common_pci.o
obj-$(CONFIG_JNX_PEX8XXX_I2C) += pex8xxx_i2c.o
obj-$(CONFIG_JNX_CONNECTOR) += jnx-connector.o
+obj-$(CONFIG_JNX_CBD_FPGA) += jnx-cbd-fpga.o jnx-cbd-fpga-common.o
+obj-$(CONFIG_JNX_CBD_FPGA_PTX1K)+= jnx-cbd-ptx1k.o
+obj-$(CONFIG_JNX_CBD_FPGA_PTX21K)+= jnx-cbd-fpga-ptx21k.o
+jnx-cbd-fpga-y := jnx-cbd-fpga-core.o jnx-cbd-fpga-ptx5k.o jnx-cbd-fpga-ptx3k.o
+jnx-cbd-ptx1k-y := jnx-cbc-ptx1k.o jnx-cbd-fpga-ptx1k.o
diff --git a/drivers/staging/jnx/jnx-cbc-ptx1k.c b/drivers/staging/jnx/jnx-cbc-ptx1k.c
new file mode 100644
index 0000000..7eff5ce
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbc-ptx1k.c
@@ -0,0 +1,242 @@
+/*
+ * Juniper Generic Control Board (CB) FPGA Driver
+ *
+ * Copyright (C) 2012, 2013, 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+#include <linux/i2c.h>
+#include <linux/workqueue.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/jnx-board-core.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/mfd/cbc-core.h>
+#include <linux/of.h>
+#include <linux/dmi.h>
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-common.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+/*
+ * Polaris notes (current state):
+ *
+ * I2C: We dont have I2C mux and I2C slow bus. The I2C is handled
+ * by the I2C accellerator in the CBC FPGA (40 buses -> 10 i2c masters
+ * internaly muxed x4), supported by the SAM i2c driver.
+ * Presence detect: (CH_PRS and OTHER_CH_PRS) - these bits are exported as
+ * GPIOs by the gpio-cbc-presence driver
+ * DEVICE_CRTL is not valid for Polaris - we don't have to reset anything a mux
+ */
+
+#define PTX1K_SAM_CHANNELS 4
+static struct i2c_adapter *jnx_find_sam_adapter(int chan)
+{
+ char name[JNX_BRD_I2C_NAME_LEN];
+ struct i2c_adapter *adap;
+ int base, mux, chan_id;
+
+ /*
+ * Find base adapter index first. Base is first SAM adapter,
+ * and the name starts with 'i2c-sam.'. We can not assume this
+ * to be constant.
+ */
+ adap = jnx_i2c_find_adapter("i2c-sam");
+ if (!adap)
+ return NULL;
+ base = adap->nr;
+ i2c_put_adapter(adap);
+
+ /*
+ * (zero based) channel -> sam i2c_adapter
+ * Example:
+ * bus #11 = i2c-10-mux (chan_id 3)
+ * bus #4 = i2c-5-mux (chan_id 0)
+ */
+ chan_id = chan % PTX1K_SAM_CHANNELS; /* 0..3 */
+ mux = chan / PTX1K_SAM_CHANNELS;
+ mux *= (PTX1K_SAM_CHANNELS + 1); /* 0, 5, 10, ... */
+ mux += base;
+
+ sprintf(name, "i2c-%d-mux (chan_id %d)", mux, chan_id);
+
+ return jnx_i2c_find_adapter(name);
+}
+
+/*
+ * Check if we're on OF enabled setup and if the jnx_connector is defined
+ * in boot dtb. If present we'll assume that board insertion/removal will
+ * be handled by the connector and the card overlays and not the jnx-*
+ * platform drivers. This allows a temp fallback util the ptx1k/x86 code
+ * is fully DT capable.
+ */
+static int jnx_connector_present(void)
+{
+ return of_have_populated_dt();
+}
+
+const struct jnx_cbd_fpga_info * const jnx_cbc_cfinfo[] = {
+ [JNX_CBD_FPGA_PTX1K] = &jnx_cbd_fpga_ptx1k_info,
+ [JNX_CBD_FPGA_PTX1K_P2] = &jnx_cbd_fpga_ptx1k_p2_info,
+ [JNX_CBD_FPGA_PTX21K] = &jnx_cbd_fpga_ptx21k_info,
+};
+
+static int jnx_cbc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct cbc_fpga_platdata *pdata = dev_get_platdata(dev);
+ const struct jnx_cbd_fpga_info *cfinfo;
+ struct jnx_cbd_fpga_data *fdata;
+ struct jnx_chassis_info chinfo;
+ struct jnx_card_info cinfo;
+ struct resource *res;
+ u32 ch_prs;
+ int err;
+
+ if (!pdata || pdata->board_type >= ARRAY_SIZE(jnx_cbc_cfinfo))
+ return -ENODEV;
+
+ cfinfo = jnx_cbc_cfinfo[pdata->board_type];
+
+ fdata = devm_kzalloc(dev, sizeof(*fdata), GFP_KERNEL);
+ if (!fdata)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ fdata->region0 = devm_ioremap(dev, res->start, resource_size(res));
+ if (!fdata->region0)
+ return -ENOMEM;
+
+ fdata->cfinfo = cfinfo;
+ fdata->find_mux_adapter = jnx_find_sam_adapter;
+ fdata->default_chan = cfinfo->i2cmux_default_chan;
+ fdata->mux_channels = cfinfo->mux_channels;
+ if (fdata->mux_channels > JNX_CBD_FPGA_NUM_MUXES)
+ fdata->mux_channels = JNX_CBD_FPGA_NUM_MUXES;
+
+ mutex_init(&fdata->lock);
+
+ platform_set_drvdata(pdev, fdata);
+
+ err = jnx_cbd_fpga_sysfs_init(dev);
+ if (err)
+ return err;
+
+ /*
+ * Register the chassis with the system so userspace is able to
+ * determine platform type, etc.
+ */
+ chinfo.platform = cfinfo->platform;
+ chinfo.chassis_no = 0;
+ chinfo.multichassis = 0;
+ chinfo.master_data = fdata;
+ chinfo.get_master = jnx_cbd_fpga_get_master;
+ chinfo.mastership_get = jnx_cbd_fpga_mastership_get;
+ chinfo.mastership_set = jnx_cbd_fpga_mastership_set;
+ chinfo.mastership_ping = jnx_cbd_fpga_mastership_ping;
+ chinfo.mastership_count_get = jnx_cbd_fpga_mastership_count_get;
+ chinfo.mastership_count_set = jnx_cbd_fpga_mastership_count_set;
+
+ jnx_register_chassis(&chinfo);
+
+ /*
+ * Register the local card with the system so userspace is able to
+ * determine board type etc.
+ */
+ ch_prs = ioread32(fdata->region0 + JNX_CBD_FPGA_CH_PRS_REG);
+
+ fdata->slot = (ch_prs & cfinfo->ch_prs_cb0_bit) ? 0 : 1;
+
+ cinfo.assembly_id = cfinfo->assembly_id;
+ cinfo.slot = fdata->slot;
+ cinfo.type = JNX_BOARD_TYPE_RE;
+ cinfo.adap = NULL;
+
+ jnx_register_local_card(&cinfo);
+
+ /* The jnx-connector & gpio-cbc-presence will handle the cards */
+ fdata->dt_enabled = jnx_connector_present();
+ if (fdata->dt_enabled) {
+ dev_info(dev, "line cards will handled by the jnx-connector\n");
+ return 0;
+ }
+
+ fdata->workqueue = create_singlethread_workqueue("jnx-cbd-poller");
+ if (!fdata->workqueue) {
+ err = -ENOMEM;
+ goto err_unregister;
+ }
+
+ INIT_DELAYED_WORK(&fdata->work, jnx_cbd_fpga_ch_prs_handler);
+
+ return 0;
+
+err_unregister:
+ jnx_unregister_local_card();
+ jnx_unregister_chassis();
+ jnx_cbd_fpga_sysfs_remove(dev);
+
+ return err;
+}
+
+static int jnx_cbc_remove(struct platform_device *pdev)
+{
+ struct jnx_cbd_fpga_data *fdata = platform_get_drvdata(pdev);
+ int i;
+
+ if (!fdata->dt_enabled) {
+ cancel_delayed_work_sync(&fdata->work);
+ flush_workqueue(fdata->workqueue);
+ destroy_workqueue(fdata->workqueue);
+
+ for (i = 0; i < fdata->mux_channels; i++) {
+ /*
+ * jnx_i2c_find_adapter acquires a hold on
+ * the adapter
+ */
+ i2c_put_adapter(fdata->mux[i]);
+ }
+ }
+
+ jnx_unregister_local_card();
+ jnx_unregister_chassis();
+
+ jnx_cbd_fpga_sysfs_remove(&pdev->dev);
+
+ return 0;
+}
+
+static struct platform_driver jnx_cbc_driver = {
+ .driver = {
+ .name = "jnx-cbd-fpga",
+ .owner = THIS_MODULE,
+ },
+ .probe = jnx_cbc_probe,
+ .remove = jnx_cbc_remove,
+};
+module_platform_driver(jnx_cbc_driver);
+
+MODULE_DESCRIPTION("JNX Polaris CBC Driver");
+MODULE_AUTHOR("Georgi Vlaev <gvlaev@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:jnx-cbd-fpga");
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-common.c b/drivers/staging/jnx/jnx-cbd-fpga-common.c
new file mode 100644
index 0000000..718fb37
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-common.c
@@ -0,0 +1,332 @@
+/*
+ * Juniper Generic Control Board (CB) FPGA Driver common code
+ *
+ * Copyright (C) 2012, 2013, 2014, 2015 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+#include <linux/i2c.h>
+#include <linux/workqueue.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/jnx-board-core.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/of.h>
+#include <linux/dmi.h>
+#include "jnx-cbd-fpga-common.h"
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+/**********************************************************************
+ *
+ * JNX CBD FPGA Board insertion/removal handling
+ *
+ **********************************************************************/
+
+void jnx_cbd_fpga_board_insert(struct jnx_cbd_fpga_data *fdata,
+ int slot, int chan)
+{
+ int mindex = chan / 64;
+ int mchan = chan % 64;
+
+ if (WARN(chan >= ARRAY_SIZE(fdata->client), "bad chan=%d\n", chan))
+ return;
+ fdata->client[chan] =
+ jnx_board_inserted(fdata->mux[chan], slot,
+ fdata->cfinfo->cpld_mux_bitmask[mindex] &
+ BIT_ULL(mchan));
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_board_insert);
+
+void jnx_cbd_fpga_board_remove(struct jnx_cbd_fpga_data *fdata, int chan)
+{
+ jnx_board_removed(fdata->mux[chan], fdata->client[chan]);
+ fdata->client[chan] = NULL;
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_board_remove);
+
+static void jnx_cbd_fpga_board_remove_all(struct jnx_cbd_fpga_data *fdata)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(fdata->client); i++)
+ jnx_cbd_fpga_board_remove(fdata, i);
+}
+
+/**********************************************************************
+ *
+ * JNX CBD FPGA Mastership attribute support
+ *
+ ***********************************************************************/
+#define JNX_MSTR_CFG_REG 0x003C
+#define JNX_MSTR_ALIVE_REG 0x0040
+#define JNX_MSTR_ALIVE_CNT_REG 0x0044
+
+#define JNX_MSTR_BOOTED BIT(0)
+#define JNX_MSTR_RELINQUISH BIT(1)
+#define JNX_MSTR_IM_RDY BIT(3)
+#define JNX_MSTR_IM_MASTER BIT(4)
+#define JNX_MSTR_HE_RDY BIT(5)
+#define JNX_MSTR_HE_MASTER BIT(6)
+
+#define JNX_MSTR (JNX_MSTR_BOOTED | JNX_MSTR_IM_RDY | JNX_MSTR_IM_MASTER)
+#define JNX_ANY_MSTR (JNX_MSTR_IM_MASTER | JNX_MSTR_HE_MASTER)
+#define JNX_HE_MSTR (JNX_MSTR_HE_RDY | JNX_MSTR_HE_MASTER)
+
+#define MSTR_ALIVE_CNT 0x01FF
+#define JNX_MSTR_ALIVE 0x0001
+
+#define JNX_MSTR_REFRESH_TIMEOUT 21
+#define JNX_MAX_MSTR_ALIVE_CNT 0xFF
+
+static bool jnx_cbd_fpga_am_master(struct jnx_cbd_fpga_data *fdata)
+{
+ u32 mstr_cfg = ioread32(fdata->region0 + JNX_MSTR_CFG_REG);
+
+ return (mstr_cfg & JNX_MSTR) == JNX_MSTR;
+}
+
+static bool jnx_cbd_fpga_he_master(struct jnx_cbd_fpga_data *fdata)
+{
+ u32 mstr_cfg = ioread32(fdata->region0 + JNX_MSTR_CFG_REG);
+
+ return (mstr_cfg & JNX_HE_MSTR) == JNX_HE_MSTR;
+}
+
+static bool jnx_cbd_fpga_become_master(struct jnx_cbd_fpga_data *fdata)
+{
+ bool am_master;
+ int i;
+
+ iowrite32(JNX_MSTR_REFRESH_TIMEOUT | (1 << 8),
+ fdata->region0 + JNX_MSTR_ALIVE_CNT_REG);
+ iowrite32(1, fdata->region0 + JNX_MSTR_ALIVE_REG);
+ iowrite32(JNX_MSTR_BOOTED, fdata->region0 + JNX_MSTR_CFG_REG);
+
+ for (i = 0; i < 20; i++) {
+ am_master = jnx_cbd_fpga_am_master(fdata);
+ if (am_master)
+ break;
+ usleep_range(10, 20);
+ }
+
+ if (am_master && !fdata->dt_enabled) /* FIXME dt_enabled is odd */
+ queue_delayed_work(fdata->workqueue, &fdata->work, 0);
+
+ return am_master;
+}
+
+static void jnx_cbd_fpga_relinquish_master(struct jnx_cbd_fpga_data *fdata)
+{
+ u32 mstr_cfg;
+ int i;
+
+ cancel_delayed_work_sync(&fdata->work);
+
+ jnx_cbd_fpga_board_remove_all(fdata);
+
+ mstr_cfg = ioread32(fdata->region0 + JNX_MSTR_CFG_REG);
+ mstr_cfg &= ~JNX_MSTR_BOOTED;
+ iowrite32(mstr_cfg, fdata->region0 + JNX_MSTR_CFG_REG);
+
+ for (i = 0; i < ARRAY_SIZE(fdata->prev_ch_prs); i++)
+ fdata->prev_ch_prs[i] = 0;
+}
+
+int jnx_cbd_fpga_get_master(void *data)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ if (jnx_cbd_fpga_am_master(fdata))
+ return fdata->slot;
+
+ if (jnx_cbd_fpga_he_master(fdata))
+ return fdata->slot ^ 1;
+
+ return -1;
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_get_master);
+
+bool jnx_cbd_fpga_mastership_get(void *data)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ return jnx_cbd_fpga_am_master(fdata);
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_mastership_get);
+
+void jnx_cbd_fpga_mastership_set(void *data, bool master)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ mutex_lock(&fdata->lock);
+ if (jnx_cbd_fpga_am_master(fdata)) {
+ if (!master)
+ jnx_cbd_fpga_relinquish_master(fdata);
+ } else {
+ if (master)
+ jnx_cbd_fpga_become_master(fdata);
+ }
+ mutex_unlock(&fdata->lock);
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_mastership_set);
+
+void jnx_cbd_fpga_mastership_ping(void *data)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ iowrite32(1, fdata->region0 + JNX_MSTR_ALIVE_REG);
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_mastership_ping);
+
+int jnx_cbd_fpga_mastership_count_get(void *data)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ return ioread32(fdata->region0 + JNX_MSTR_ALIVE_CNT_REG) &
+ JNX_MAX_MSTR_ALIVE_CNT;
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_mastership_count_get);
+
+int jnx_cbd_fpga_mastership_count_set(void *data, int val)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+
+ if (val < 0 || val > JNX_MAX_MSTR_ALIVE_CNT)
+ return -EINVAL;
+
+ iowrite32(val | (1 << 8), fdata->region0 + JNX_MSTR_ALIVE_CNT_REG);
+
+ return 0;
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_mastership_count_set);
+
+#define FPGA_MEM_SIZE 0x1000
+
+static struct jnx_cbd_fpga_data *cbd_sysfs_get_dev_info(struct kobject *kobj)
+{
+ struct platform_device *pdev =
+ to_platform_device(container_of(kobj, struct device, kobj));
+
+ return platform_get_drvdata(pdev);
+}
+
+static int cbd_fpga_validate_access_parameters(loff_t offset, size_t count)
+{
+ /*
+ * Need to make sure the count is a multiple of JNX_CBD_FPGA_REG_SIZE
+ * bytes and that the offset plus the number of registers being read
+ * is less than the size of the fpga.
+ */
+ if ((count % JNX_CBD_FPGA_REG_SIZE) == 0)
+ if ((offset + (count / JNX_CBD_FPGA_REG_SIZE)) < FPGA_MEM_SIZE)
+ return 0;
+
+ return -EINVAL;
+}
+
+static ssize_t cbd_fpga_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct jnx_cbd_fpga_data *cfpga = cbd_sysfs_get_dev_info(kobj);
+ void __iomem *addr;
+ ssize_t err;
+ int nregs;
+ u32 *buf;
+ int i;
+
+ err = cbd_fpga_validate_access_parameters(offset, count);
+ if (err)
+ return err;
+
+ nregs = count / JNX_CBD_FPGA_REG_SIZE;
+ buf = (u32 *)buffer;
+ addr = cfpga->region0 + offset;
+
+ for (i = 0; i < nregs; i++)
+ buf[i] = ioread32(addr + i * JNX_CBD_FPGA_REG_SIZE);
+
+ return count;
+}
+
+static ssize_t cbd_fpga_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buffer, loff_t offset, size_t count)
+{
+ struct jnx_cbd_fpga_data *cfpga = cbd_sysfs_get_dev_info(kobj);
+ void __iomem *addr;
+ ssize_t err;
+ int nregs;
+ u32 *buf;
+ int i;
+
+ err = cbd_fpga_validate_access_parameters(offset, count);
+ if (err)
+ return err;
+
+ nregs = count / JNX_CBD_FPGA_REG_SIZE;
+ buf = (u32 *)buffer;
+ addr = cfpga->region0 + offset;
+
+ for (i = 0; i < nregs; i++)
+ iowrite32(buf[i], addr + i * JNX_CBD_FPGA_REG_SIZE);
+
+ return count;
+}
+
+static struct bin_attribute cbd_fpga_attr = {
+ .attr = {
+ .name = "fpga-data",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+
+ .size = FPGA_MEM_SIZE,
+ .read = cbd_fpga_read,
+ .write = cbd_fpga_write,
+};
+
+int jnx_cbd_fpga_sysfs_init(struct device *dev)
+{
+ int err;
+
+ err = sysfs_create_bin_file(&dev->kobj, &cbd_fpga_attr);
+ if (err)
+ return err;
+
+ err = sysfs_create_link(&dev->parent->parent->parent->kobj,
+ &dev->kobj, "cbfpga");
+ if (err)
+ goto err_bin_file;
+ return 0;
+
+err_bin_file:
+ sysfs_remove_bin_file(&dev->kobj, &cbd_fpga_attr);
+ return err;
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_sysfs_init);
+
+void jnx_cbd_fpga_sysfs_remove(struct device *dev)
+{
+ sysfs_remove_link(&dev->parent->parent->parent->kobj,
+ "cbfpga");
+ sysfs_remove_bin_file(&dev->kobj, &cbd_fpga_attr);
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_sysfs_remove);
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-common.h b/drivers/staging/jnx/jnx-cbd-fpga-common.h
new file mode 100644
index 0000000..9bf4949
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-common.h
@@ -0,0 +1,27 @@
+/*
+ * jnx-cbd-fpga-common.h
+ *
+ * Copyright (C) 2015 Juniper Networks. All rights reserved.
+ *
+ */
+
+#ifndef JNX_CBD_FPGA_COMMON_H
+#define JNX_CBD_FPGA_COMMON_H
+
+struct jnx_cbd_fpga_data;
+
+void jnx_cbd_fpga_board_insert(struct jnx_cbd_fpga_data *fdata,
+ int slot, int chan);
+void jnx_cbd_fpga_board_remove(struct jnx_cbd_fpga_data *fdata, int chan);
+
+int jnx_cbd_fpga_get_master(void *data);
+bool jnx_cbd_fpga_mastership_get(void *data);
+void jnx_cbd_fpga_mastership_set(void *data, bool master);
+void jnx_cbd_fpga_mastership_ping(void *data);
+int jnx_cbd_fpga_mastership_count_get(void *data);
+int jnx_cbd_fpga_mastership_count_set(void *data, int val);
+
+int jnx_cbd_fpga_sysfs_init(struct device *dev);
+void jnx_cbd_fpga_sysfs_remove(struct device *dev);
+
+#endif /* JNX_CBD_FPGA_COMMON_H */
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-core.c b/drivers/staging/jnx/jnx-cbd-fpga-core.c
new file mode 100644
index 0000000..b665f46
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-core.c
@@ -0,0 +1,540 @@
+/*
+ * Juniper Generic Control Board (CB) FPGA Driver
+ *
+ * Copyright (C) 2012, 2013, 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/i2c.h>
+#include <linux/i2c-mux.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+#include <linux/workqueue.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/jnx-board-core.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/jnx/pci_ids.h>
+#include <linux/platform_data/i2c-pca-jnx.h>
+#include <linux/of.h>
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-common.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+#define DRIVER_VERSION "0.01.0"
+#define DRIVER_DESC "JNX CB FPGA Driver"
+
+#define JNX_CBD_FPGA_MODULE_NAME "jnx-cbd-fpga"
+
+static const struct pci_device_id jnx_cbd_fpga_id_table[] = {
+ {PCI_VDEVICE(JUNIPER, JNX_CBD_FPGA_DID_09B3), JNX_CBD_FPGA_PTX5K},
+ {PCI_VDEVICE(JUNIPER, JNX_CBD_FPGA_DID_0BA8), JNX_CBD_FPGA_PTX3K},
+ {0,}
+};
+MODULE_DEVICE_TABLE(pci, jnx_cbd_fpga_id_table);
+
+static const struct jnx_cbd_fpga_info *jnx_cbd_fpga_info_tbl[] = {
+ [JNX_CBD_FPGA_PTX5K] = &jnx_cbd_fpga_ptx5k_info,
+ [JNX_CBD_FPGA_PTX3K] = &jnx_cbd_fpga_ptx3k_info,
+};
+
+/**********************************************************************
+ *
+ * JNX CBD FPGA I2C controller APIs
+ *
+ **********************************************************************/
+#define JNX_CBD_FPGA_WAIT_FOR_IDLE 10000
+
+#define JNX_CBD_FPGA_I2C_CTRL_READ BIT(0)
+#define JNX_CBD_FPGA_I2C_CTRL_WRITE 0
+#define JNX_CBD_FPGA_I2C_CTRL_START BIT(1)
+#define JNX_CBD_FPGA_I2C_CTRL_SEL_I2C BIT(2)
+
+static int jnx_cbd_fpga_i2c_wait_bus_inactive(struct jnx_cbd_fpga_data *fdata)
+{
+ int i = 0;
+
+ while (ioread32(fdata->ctrl_reg) & JNX_CBD_FPGA_I2C_CTRL_START &&
+ i++ < JNX_CBD_FPGA_WAIT_FOR_IDLE) {
+ udelay(1);
+ }
+
+ if (i >= JNX_CBD_FPGA_WAIT_FOR_IDLE)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static void jnx_cbd_fpga_iowrite32_sync(u32 val, void __iomem *reg)
+{
+ iowrite32(val, reg);
+ ioread32(reg);
+}
+
+static void jnx_cbd_fpga_i2c_writebyte(struct device *dev, int reg, int value)
+{
+ struct jnx_cbd_fpga_data *fdata = dev_get_drvdata(dev);
+ int rc;
+
+ rc = jnx_cbd_fpga_i2c_wait_bus_inactive(fdata);
+ if (rc < 0)
+ return;
+
+ iowrite32(value, fdata->data_reg);
+
+ iowrite32(reg, fdata->addr_reg);
+
+ jnx_cbd_fpga_iowrite32_sync(JNX_CBD_FPGA_I2C_CTRL_SEL_I2C |
+ JNX_CBD_FPGA_I2C_CTRL_WRITE |
+ JNX_CBD_FPGA_I2C_CTRL_START,
+ fdata->ctrl_reg);
+}
+
+static int jnx_cbd_fpga_i2c_readbyte(struct device *dev, int reg)
+{
+ struct jnx_cbd_fpga_data *fdata = dev_get_drvdata(dev);
+ int rc;
+
+ rc = jnx_cbd_fpga_i2c_wait_bus_inactive(fdata);
+ if (rc)
+ return 0;
+
+ iowrite32(reg, fdata->addr_reg);
+
+ iowrite32(JNX_CBD_FPGA_I2C_CTRL_SEL_I2C | JNX_CBD_FPGA_I2C_CTRL_READ |
+ JNX_CBD_FPGA_I2C_CTRL_START, fdata->ctrl_reg);
+
+ rc = jnx_cbd_fpga_i2c_wait_bus_inactive(fdata);
+ if (rc)
+ return 0;
+
+ return (u8)ioread32(fdata->data_reg);
+}
+
+/**********************************************************************
+ *
+ * End JNX CBD FPGA I2C controller APIs
+ *
+ **********************************************************************/
+
+/**********************************************************************
+ *
+ * JNX CBD FPGA I2C Selector Mux APIs
+ *
+ **********************************************************************/
+
+static int cbd_i2c_select_chan(struct i2c_mux_core *muxc, u32 chan)
+{
+ struct jnx_cbd_fpga_data *fdata = i2c_mux_priv(muxc);
+ u32 select;
+
+ select = ioread32(fdata->select_reg);
+ if (select != chan)
+ jnx_cbd_fpga_iowrite32_sync(chan, fdata->select_reg);
+
+ return 0;
+}
+
+static int cbd_i2c_deselect_chan(struct i2c_mux_core *muxc, u32 chan)
+{
+ struct jnx_cbd_fpga_data *fdata = i2c_mux_priv(muxc);
+
+ return cbd_i2c_select_chan(muxc, fdata->default_chan);
+}
+
+/**********************************************************************
+ * JNX CBD FPGA I2C Selector Mux APIs
+ **********************************************************************/
+
+void jnx_cbd_fpga_ch_prs_handler(struct work_struct *work)
+{
+ struct jnx_cbd_fpga_data *fdata = container_of(to_delayed_work(work),
+ struct jnx_cbd_fpga_data,
+ work);
+ const struct jnx_cbd_fpga_info *cfinfo;
+ unsigned long ch_prs, prs_change;
+ int slot, chan;
+ int i, bit;
+
+ cfinfo = fdata->cfinfo;
+
+ mutex_lock(&fdata->lock);
+
+ for (i = 0; i < ARRAY_SIZE(cfinfo->cpld_prs_reg); i++) {
+ if (!cfinfo->cpld_prs_reg[i])
+ continue;
+
+ ch_prs = ioread32(fdata->region0 + cfinfo->cpld_prs_reg[i]);
+ ch_prs |= cfinfo->cpld_prs_set_bitmask[i];
+ if (cfinfo->cpld_prs_bitmask[i])
+ ch_prs &= cfinfo->cpld_prs_bitmask[i];
+ prs_change = ch_prs ^ fdata->prev_ch_prs[i];
+ fdata->prev_ch_prs[i] = ch_prs;
+
+ for_each_set_bit(bit, &prs_change, sizeof(u32) * 8) {
+ chan = cfinfo->get_channel(bit + i * 32);
+ if (chan < 0)
+ continue;
+
+ if (!fdata->mux[chan] && fdata->find_mux_adapter)
+ fdata->mux[chan] =
+ fdata->find_mux_adapter(chan);
+
+ if (!fdata->mux[chan])
+ continue;
+
+ slot = cfinfo->get_slot_from_chan(chan);
+ if (slot < 0)
+ continue;
+
+ pr_info("CBC: presence bit %d -> chan: %d, adap %p\n",
+ bit + i * 32, chan, fdata->mux[chan]);
+
+ if (test_bit(bit, &ch_prs))
+ jnx_cbd_fpga_board_insert(fdata, slot, chan);
+ else
+ jnx_cbd_fpga_board_remove(fdata, chan);
+ }
+ }
+
+ mutex_unlock(&fdata->lock);
+
+ queue_delayed_work(fdata->workqueue, &fdata->work, 10 * HZ);
+}
+EXPORT_SYMBOL(jnx_cbd_fpga_ch_prs_handler);
+
+/**********************************************************************
+ * End JNX CBD FPGA Board insertion/removal handling
+ **********************************************************************/
+
+static void jnx_cbd_fpga_device_reset(void __iomem *reg_addr, u32 mask)
+{
+ u32 device_ctrl = 0;
+
+ device_ctrl = ioread32(reg_addr);
+ device_ctrl |= mask;
+ iowrite32(device_ctrl, reg_addr);
+
+ usleep_range(100, 500); /* was udelay(100) */
+
+ device_ctrl = ioread32(reg_addr);
+ device_ctrl &= ~mask;
+ iowrite32(device_ctrl, reg_addr);
+}
+
+static int jnx_cbd_fpga_ptx5k_get_master(void *data)
+{
+ struct jnx_cbd_fpga_data *fdata = data;
+ int slot;
+ u32 rev;
+
+ slot = jnx_cbd_fpga_get_master(data);
+ if (slot < 0) {
+ rev = ioread32(fdata->region0 + JNX_CBD_FPGA_REV_REG);
+ if (rev < JNX_CBD_FPGA_REV_GOOD) {
+ WARN_ONCE(1,
+ "FPGA ver. 0x%x can't support master detect\n",
+ rev);
+ /*
+ * We can not determine who is master. It is not us,
+ * so assume that the other RE is master.
+ */
+ slot = fdata->slot ^ 1;
+ }
+ }
+
+ return slot;
+}
+
+/*
+ * Check if we're on OF enabled setup. If so, we'll assume that board
+ * insertion/removal is handled by the jnx-connector driver + overlays
+ * and not the jnx-* platform drivers. This allows a temporary workaround
+ * until all the ptx-x86 code is OF capable.
+ */
+static int jnx_connector_present(void)
+{
+ return of_have_populated_dt();
+}
+
+/*
+ * jnx_of_create_device()
+ * Hack - create the presence driver and associate with dt node
+ * This vaguely simulates what the mfd_core does.
+ */
+static char * const of_presence_dev_names[] = {
+ "jnx,gpio-cbc-presence",
+ "jnx,gpio-cbc-presence-other",
+};
+
+static struct platform_device *jnx_of_create_device(struct pci_dev *pcidev,
+ int id, const char *name,
+ const char *of_compatible)
+{
+ struct device *parent = &pcidev->dev;
+ struct platform_device *pdev = NULL;
+ struct device_node *np = NULL;
+ struct resource res;
+
+ if (!parent->of_node || !of_compatible)
+ return NULL;
+
+ memset(&res, 0, sizeof(res));
+ res.start = pci_resource_start(pcidev, 0);
+ res.end = pci_resource_end(pcidev, 0);
+ res.flags = IORESOURCE_MEM;
+ res.parent = &pcidev->resource[0];
+
+ pdev = platform_device_register_resndata(parent, name, id,
+ &res, 1, NULL, 0);
+
+ if (IS_ERR(pdev))
+ return NULL;
+
+ for_each_child_of_node(parent->of_node, np) {
+ if (of_device_is_compatible(np, of_compatible)) {
+ pdev->dev.of_node = np;
+ return pdev;
+ }
+ }
+
+ dev_err(parent, "Failed to create %s device\n", of_compatible);
+ /* of_compatible node missing */
+ platform_device_put(pdev);
+
+ return NULL;
+}
+
+static int
+jnx_cbd_fpga_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ const struct jnx_cbd_fpga_info *cfinfo =
+ jnx_cbd_fpga_info_tbl[id->driver_data];
+ struct jnx_i2c_pca_platform_data idata;
+ struct device *dev = &pdev->dev;
+ struct jnx_cbd_fpga_data *fdata;
+ struct jnx_chassis_info chinfo;
+ struct jnx_card_info cinfo;
+ void __iomem *reset_reg;
+ u32 *bitmasks;
+ u32 ch_prs;
+ int err;
+ int i;
+
+ fdata = devm_kzalloc(dev, sizeof(*fdata), GFP_KERNEL);
+ if (!fdata)
+ return -ENOMEM;
+
+ dev_dbg(dev, "%s.%s(): irq pin %d\n", JNX_CBD_FPGA_MODULE_NAME,
+ __func__, pdev->irq);
+
+ err = pcim_enable_device(pdev);
+ if (err)
+ return err;
+
+ err = pcim_iomap_regions(pdev, 1 << 0, JNX_CBD_FPGA_MODULE_NAME);
+ if (err)
+ return err;
+
+ /*
+ * Need to remap the io regions for the slow bus registers and
+ * the i2c select register. These are needed for the associated
+ * i2c adapter and mux drivers.
+ */
+ fdata->region0 = pcim_iomap_table(pdev)[0];
+
+ fdata->cfinfo = cfinfo;
+ fdata->default_chan = cfinfo->i2cmux_default_chan;
+ fdata->mux_channels = cfinfo->mux_channels;
+ if (fdata->mux_channels > JNX_CBD_FPGA_NUM_MUXES)
+ fdata->mux_channels = JNX_CBD_FPGA_NUM_MUXES;
+
+ mutex_init(&fdata->lock);
+
+ /*
+ * Set up the slow bus address registers
+ */
+ fdata->addr_reg = fdata->region0 + JNX_CBD_FPGA_SLOW_BUS_REG;
+ fdata->data_reg = fdata->addr_reg + JNX_CBD_FPGA_REG_SIZE;
+ fdata->ctrl_reg = fdata->data_reg + JNX_CBD_FPGA_REG_SIZE;
+
+ fdata->select_reg = fdata->region0 + JNX_CBD_FPGA_I2C_SELECT_REG;
+
+ pci_set_drvdata(pdev, fdata);
+
+ err = jnx_cbd_fpga_sysfs_init(dev);
+ if (err)
+ return err;
+
+ /*
+ * Run any devices resets that are required before instantiating
+ * any other devices.
+ */
+ reset_reg = fdata->region0 + cfinfo->reset->reg_offset;
+ bitmasks = cfinfo->reset->bitmasks;
+ i = 0;
+
+ while (bitmasks[i])
+ jnx_cbd_fpga_device_reset(reset_reg, bitmasks[i++]);
+
+ /*
+ * Register the chassis with the system so userspace is able to
+ * determine platform type, etc.
+ */
+ chinfo.platform = cfinfo->platform;
+ chinfo.chassis_no = 0;
+ chinfo.multichassis = 0;
+ chinfo.master_data = fdata;
+ chinfo.get_master = jnx_cbd_fpga_ptx5k_get_master;
+ chinfo.mastership_get = jnx_cbd_fpga_mastership_get;
+ chinfo.mastership_set = jnx_cbd_fpga_mastership_set;
+ chinfo.mastership_ping = jnx_cbd_fpga_mastership_ping;
+ chinfo.mastership_count_get = jnx_cbd_fpga_mastership_count_get;
+ chinfo.mastership_count_set = jnx_cbd_fpga_mastership_count_set;
+
+ jnx_register_chassis(&chinfo);
+
+ /*
+ * Register the local card with the system so userspace is able to
+ * determine board type etc.
+ */
+ ch_prs = ioread32(fdata->region0 + JNX_CBD_FPGA_CH_PRS_REG);
+
+ fdata->slot = (ch_prs & cfinfo->ch_prs_cb0_bit) ? 0 : 1;
+
+ cinfo.assembly_id = cfinfo->assembly_id;
+ cinfo.slot = fdata->slot;
+ cinfo.type = JNX_BOARD_TYPE_RE;
+ cinfo.adap = NULL;
+
+ jnx_register_local_card(&cinfo);
+
+ /*
+ * Set up and create the i2c controller
+ */
+ idata.dev = dev;
+ idata.adap = &fdata->adap;
+ idata.clock = 400000;
+ idata.read_byte = jnx_cbd_fpga_i2c_readbyte;
+ idata.write_byte = jnx_cbd_fpga_i2c_writebyte;
+
+ fdata->i2c_ctlr = platform_device_alloc(cfinfo->i2c_ctlr_name, -1);
+ if (!fdata->i2c_ctlr) {
+ err = -ENOMEM;
+ goto err_unregister;
+ }
+
+ err = platform_device_add_data(fdata->i2c_ctlr, &idata, sizeof(idata));
+ if (err)
+ goto err_pdev;
+
+ err = platform_device_add(fdata->i2c_ctlr);
+ if (err)
+ goto err_pdev;
+
+ /* Now create i2c muxes on top of the i2c adapter */
+ fdata->muxc = i2c_mux_alloc(&fdata->adap, &pdev->dev,
+ fdata->mux_channels, 0, 0,
+ cbd_i2c_select_chan,
+ cbd_i2c_deselect_chan);
+ if (!fdata->muxc) {
+ err = -ENOMEM;
+ goto err_pdev;
+ }
+ fdata->muxc->priv = fdata;
+
+ for (i = 0; i < fdata->mux_channels; i++) {
+ err = i2c_mux_add_adapter(fdata->muxc, 0, i, 0);
+ if (err)
+ goto err_mux;
+ }
+
+ /* The jnx-connector & gpio-cbc-presence will handle the cards */
+ fdata->dt_enabled = jnx_connector_present();
+ if (fdata->dt_enabled) {
+ dev_info(dev, "line cards will handled by the jnx-connector\n");
+ for (i = 0; i < ARRAY_SIZE(fdata->presence_devices); i++) {
+ fdata->presence_devices[i] =
+ jnx_of_create_device(pdev, i,
+ "gpio-cbc-presence",
+ of_presence_dev_names[i]);
+ if (!fdata->presence_devices[i])
+ dev_err(dev, "Failed to create %s device\n",
+ of_presence_dev_names[i]);
+ }
+ return 0;
+ }
+
+ fdata->workqueue = create_singlethread_workqueue("jnx-cbd-poller");
+ if (!fdata->workqueue) {
+ err = -ENOMEM;
+ goto err_mux;
+ }
+
+ INIT_DELAYED_WORK(&fdata->work, jnx_cbd_fpga_ch_prs_handler);
+
+ return 0;
+
+err_mux:
+ i2c_mux_del_adapters(fdata->muxc);
+
+err_pdev:
+ platform_device_put(fdata->i2c_ctlr);
+
+err_unregister:
+ jnx_unregister_chassis();
+ jnx_cbd_fpga_sysfs_remove(dev);
+
+ return err;
+}
+
+static void jnx_cbd_fpga_remove(struct pci_dev *pdev)
+{
+ struct jnx_cbd_fpga_data *fdata = pci_get_drvdata(pdev);
+ int i;
+
+ if (!fdata->dt_enabled) {
+ cancel_delayed_work_sync(&fdata->work);
+ flush_workqueue(fdata->workqueue);
+ destroy_workqueue(fdata->workqueue);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(fdata->presence_devices); i++) {
+ if (fdata->presence_devices[i])
+ platform_device_put(fdata->presence_devices[i]);
+ }
+
+ i2c_mux_del_adapters(fdata->muxc);
+ platform_device_put(fdata->i2c_ctlr);
+ jnx_unregister_local_card();
+ jnx_unregister_chassis();
+ jnx_cbd_fpga_sysfs_remove(&pdev->dev);
+}
+
+static struct pci_driver jnx_cbd_fpga_driver = {
+ .name = JNX_CBD_FPGA_MODULE_NAME,
+ .id_table = jnx_cbd_fpga_id_table,
+ .probe = jnx_cbd_fpga_probe,
+ .remove = jnx_cbd_fpga_remove,
+};
+
+module_pci_driver(jnx_cbd_fpga_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-core.h b/drivers/staging/jnx/jnx-cbd-fpga-core.h
new file mode 100644
index 0000000..ac7a4cf
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-core.h
@@ -0,0 +1,68 @@
+/*
+ * Juniper Generic Control Board (CB) FPGA Driver
+ *
+ * Copyright (C) 2012, 2013, 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef _JNX_CBD_FPGA_CORE_H
+#define _JNX_CBD_FPGA_CORE_H
+
+#include <linux/bitops.h>
+
+#define JNX_CBD_FPGA_REG_SIZE 4
+
+#define JNX_CBD_FPGA_INTR_SRC 0x0000
+#define JNX_CBD_FPGA_INTR_EN 0x0004
+#define JNX_CBD_FPGA_I2C_SELECT_REG 0x0010
+#define JNX_CBD_FPGA_CH_PRS_REG 0x0014
+#define JNX_CBD_FPGA_SLOW_BUS_REG 0x0054
+#define JNX_CBD_FPGA_REV_REG 0x0060
+#define JNX_CBD_FPGA_DUMMY_READ_REG 0x0064
+#define JNX_CBD_FPGA_CH_OTHER_PRS_REG 0x00D4
+
+#define JNX_CBD_FPGA_REV_GOOD 0x011F
+
+#define JNX_CBD_FPGA_NUM_MUXES 96
+/*
+ * JNX CBD CH Presence definitions
+ */
+#define JNX_CBD_FPGA_CH_PRS_CB0_PIN BIT(27)
+
+struct jnx_cbd_fpga_data {
+ u32 slot;
+ const struct jnx_cbd_fpga_info *cfinfo;
+ u32 default_chan;
+ u32 prev_ch_prs[4];
+ struct i2c_adapter * (*find_mux_adapter)(int chan);
+ int mux_channels;
+ struct i2c_adapter *mux[JNX_CBD_FPGA_NUM_MUXES];
+ struct i2c_client *client[JNX_CBD_FPGA_NUM_MUXES];
+ struct i2c_mux_core *muxc;
+ bool standalone;
+ int irq;
+ struct i2c_adapter adap;
+ struct mutex lock; /* safe access lock */
+ struct platform_device *i2c_ctlr;
+ struct workqueue_struct *workqueue;
+ struct delayed_work work;
+ int dt_enabled;
+ struct platform_device *presence_devices[2];
+ void __iomem *region0;
+ void __iomem *addr_reg;
+ void __iomem *data_reg;
+ void __iomem *ctrl_reg;
+ void __iomem *select_reg;
+};
+
+void jnx_cbd_fpga_ch_prs_handler(struct work_struct *work);
+
+#endif /* _JNX_CBD_FPGA_CORE_H */
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-platdata.h b/drivers/staging/jnx/jnx-cbd-fpga-platdata.h
new file mode 100644
index 0000000..a91e38d
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-platdata.h
@@ -0,0 +1,51 @@
+/*
+ * Juniper CBD FPGA Platform Data
+ *
+ * Copyright (C) 2012, 2013, 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef __JNX_CBD_FPGA_H
+#define __JNX_CBD_FPGA_H
+
+enum jnx_cbd_fpga_boards {
+ JNX_CBD_FPGA_PTX5K,
+ JNX_CBD_FPGA_PTX3K,
+};
+
+struct jnx_cbd_fpga_dev_reset_data {
+ u16 reg_offset;
+ u32 *bitmasks;
+};
+
+struct jnx_cbd_fpga_info {
+ u32 platform;
+ u32 assembly_id;
+ u64 cpld_mux_bitmask[2];
+ u32 cpld_prs_reg[4];
+ u32 cpld_prs_set_bitmask[4];
+ u32 cpld_prs_bitmask[4];
+ u32 ch_prs_cb0_bit;
+ u32 mux_channels;
+ u32 i2cmux_default_chan;
+ const char *i2c_ctlr_name;
+ struct jnx_cbd_fpga_dev_reset_data *reset;
+ int (*get_channel)(u32 bit);
+ int (*get_slot_from_chan)(int chan);
+};
+
+extern struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx5k_info,
+ jnx_cbd_fpga_ptx3k_info,
+ jnx_cbd_fpga_ptx1k_info,
+ jnx_cbd_fpga_ptx1k_p2_info,
+ jnx_cbd_fpga_ptx21k_info;
+
+#endif /* __JNX_CBD_FPGA_H */
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-ptx1k.c b/drivers/staging/jnx/jnx-cbd-fpga-ptx1k.c
new file mode 100644
index 0000000..3314569
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-ptx1k.c
@@ -0,0 +1,134 @@
+/*
+ * Juniper PTX 1000 Control Board (CB) FPGA
+ *
+ * Copyright (C) 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/board_ids.h>
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+#define JNX_CBD_FPGA_PTX1K_DEVICE_CTRL_REG 0x00C0
+#define JNX_CBD_FPGA_PTX1K_DEFAULT_CHAN 26 /* LOCAL_I2C */
+
+#define JNX_CBD_FPGA_PTX1K_CPLD_MUX 0xFF00 /* FPC[8] 8..15 */
+
+static u32 jnx_cbd_fpga_ptx1k_bitmask[] = { 0 };
+
+/* DEVICE_CTRL is not valid for Polaris */
+static struct jnx_cbd_fpga_dev_reset_data jnx_cbd_fpga_ptx1k_device_reset = {
+ .reg_offset = JNX_CBD_FPGA_PTX1K_DEVICE_CTRL_REG,
+ .bitmasks = jnx_cbd_fpga_ptx1k_bitmask,
+};
+
+/* Table to map from mux channel number to slot */
+
+static s8 ptx1k_mux_slot_map[40] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, /* 0.. 7: Unused + RSVD[2] */
+ 0, 1, 2, 3, 4, 5, 6, 7, /* 8..15: FPC[8] */
+ 0, 1, 2, 3, 4, 5, /* 16..21: SIB[6] */
+ -1, -1, -1, /* 22..24: Unused */
+ 0, /* 25: MP */
+ 1, /* 26: Local */
+ -1, /* 27: Unused */
+ 0, 1, 2, 3, 4, /* 28..32: PSM[5] */
+ -1, /* 33: Unused */
+ 0, /* 34: FT0 */
+ 0, /* 35: FPD */
+ 0, 1, /* 36..37: CB[2] */
+ -1, -1 /* 38..39: SFPP[2] */
+};
+
+static int jnx_cbd_fpga_ptx1k_get_slot_from_channel(int chan)
+{
+ if (chan < 0 || chan >= ARRAY_SIZE(ptx1k_mux_slot_map) ||
+ ptx1k_mux_slot_map[chan] < 0)
+ return -EINVAL;
+
+ return ptx1k_mux_slot_map[chan];
+}
+
+/* Table to map from presence bit to mux channel */
+static s8 ptx1k_mux_channel_map[64] = {
+ 8, 9, 10, 11, 12, 13, 14, 15, /* CH_PRS FPC[7:0] */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* CH_PRS Reserved [15:8] */
+ 34, /* CH_PRS FT[16] */
+ -1, -1, -1, -1, /* CH_PRS Reserved [20:17] */
+ 36, 37, /* CH_PRS CB[22:21] */
+ 35, /* CH_PRS FPD[23] */
+ -1, -1, -1, -1, -1, -1, /* CH_PRS Reserved[29:24] */
+ 25, /* CH_PRS MP[30] */
+ -1, /* CH_PRS Reserved[31]*/
+ 28, 29, 30, 31, 32, /* OTHER_CH_PRS PSM[4:0] */
+ 16, 17, 18, 19, 20, 21, /* OTHER_CH_PRS SIB[10:5] */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1 /* OTHER_CH_PRS Reserved[31:11] */
+};
+
+static int jnx_cbd_fpga_ptx1k_get_channel(u32 bit)
+{
+ if (bit > 63 || ptx1k_mux_channel_map[bit] < 0)
+ return -EINVAL;
+
+ return ptx1k_mux_channel_map[bit];
+}
+
+struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx1k_info = {
+ .platform = JNX_PRODUCT_POLARIS,
+ .assembly_id = JNX_ID_POLARIS_RCB,
+ .cpld_mux_bitmask = {
+ JNX_CBD_FPGA_PTX1K_CPLD_MUX,
+ },
+ .cpld_prs_set_bitmask = {
+ BIT(30), /* MP */
+ },
+ .cpld_prs_reg = {
+ JNX_CBD_FPGA_CH_PRS_REG,
+ JNX_CBD_FPGA_CH_OTHER_PRS_REG,
+ },
+ .ch_prs_cb0_bit = JNX_CBD_FPGA_CH_PRS_CB0_PIN,
+ .mux_channels = ARRAY_SIZE(ptx1k_mux_slot_map),
+ .i2cmux_default_chan = JNX_CBD_FPGA_PTX1K_DEFAULT_CHAN,
+ .i2c_ctlr_name = "",
+ .reset = &jnx_cbd_fpga_ptx1k_device_reset,
+ .get_channel = jnx_cbd_fpga_ptx1k_get_channel,
+ .get_slot_from_chan = jnx_cbd_fpga_ptx1k_get_slot_from_channel,
+};
+
+struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx1k_p2_info = {
+ .platform = JNX_PRODUCT_POLARIS,
+ .assembly_id = JNX_ID_POLARIS_RCB_P2,
+ .cpld_mux_bitmask = {
+ JNX_CBD_FPGA_PTX1K_CPLD_MUX,
+ },
+ .cpld_prs_set_bitmask = {
+ BIT(30), /* MP */
+ },
+ .cpld_prs_reg = {
+ JNX_CBD_FPGA_CH_PRS_REG,
+ JNX_CBD_FPGA_CH_OTHER_PRS_REG,
+ },
+ .ch_prs_cb0_bit = JNX_CBD_FPGA_CH_PRS_CB0_PIN,
+ .mux_channels = ARRAY_SIZE(ptx1k_mux_slot_map),
+ .i2cmux_default_chan = JNX_CBD_FPGA_PTX1K_DEFAULT_CHAN,
+ .i2c_ctlr_name = "",
+ .reset = &jnx_cbd_fpga_ptx1k_device_reset,
+ .get_channel = jnx_cbd_fpga_ptx1k_get_channel,
+ .get_slot_from_chan = jnx_cbd_fpga_ptx1k_get_slot_from_channel,
+};
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-ptx21k.c b/drivers/staging/jnx/jnx-cbd-fpga-ptx21k.c
new file mode 100644
index 0000000..d9a4227
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-ptx21k.c
@@ -0,0 +1,143 @@
+/*
+ * Juniper PTX 21000 Control Board (CB) FPGA
+ *
+ * Copyright (C) 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/bitops.h>
+
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-subsys-private.h"
+
+#define JNX_CBD_FPGA_PTX21K_DEVICE_CTRL_REG 0x00C0
+#define JNX_CBD_FPGA_PTX21K_DEFAULT_CHAN 57 /* LOCAL_I2C */
+
+#define JNX_CBD_FPGA_PTX21K_CPLD_MUX 0x00000000
+#define JNX_CBD_FPGA_PTX21K_CPLD_MUX_HI 0x00000000
+
+/* PTX21k has a different bit for the CB slot */
+#define JNX_CBD_FPGA_21K_CH_PRS_CB0_PIN BIT(30)
+
+#define JNX_CBD_FPGA_21K_CH_PRS_SIB_REG 0x0028
+#define JNX_CBD_FPGA_21K_CH_PRS_SIB_MASK 0x1ff
+
+static u32 jnx_cbd_fpga_ptx21k_bitmask[] = { 0 };
+
+static struct jnx_cbd_fpga_dev_reset_data jnx_cbd_fpga_ptx21k_device_reset = {
+ .reg_offset = JNX_CBD_FPGA_PTX21K_DEVICE_CTRL_REG,
+ .bitmasks = jnx_cbd_fpga_ptx21k_bitmask,
+};
+
+/* Table to map from mux channel number to slot */
+
+static s8 ptx21k_mux_slot_map[72] = {
+ 0, 1, 2, 3, /* 0..3: FPC */
+ 4, 5, 6, 7, /* 4..7: FPC */
+ 8, 9, 10, 11, /* 8..11: FPC */
+ 12, 13, 14, 15, /* 12..15: FPC */
+ 16, 17, 18, 19, /* 16..19: FPC */
+ 0, 1, 2, 3, /* 20..23: PSM */
+ 4, 5, 6, 7, /* 24..27: PSM */
+ 8, 9, 10, 11, /* 28..31: PSM */
+ 12, 13, 14, 15, /* 32..35: PSM */
+ 16, 17, 18, 19, /* 36..39: PSM */
+ 20, 21, 22, 23, /* 40..43: PSM */
+ 0, 1, 2, 3, 4, 5, /* 44..49: FT */
+ 0, 1, /* 50..51: CB */
+ 0, 1, 2, 3, 4, /* 52..56: BP */
+ 0, /* 57: Local */
+ -1, /* 58: QSFP */
+ 0, /* 59: FPD */
+ 0, 1, 2, 3, 4, /* 60 ..64: SIB */
+ 5, 6, 7, 8, /* 65 ..68: SIB */
+ 0, /* 69: CB PCIeSW */
+};
+
+static int jnx_cbd_fpga_ptx21k_get_slot_from_channel(int chan)
+{
+ if (chan < 0 || chan >= ARRAY_SIZE(ptx21k_mux_slot_map) ||
+ ptx21k_mux_slot_map[chan] < 0)
+ return -EINVAL;
+
+ return ptx21k_mux_slot_map[chan];
+}
+
+static s8 ptx21k_mux_channel_map[96] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, /* CH_PRS[7:0] = FPC[7:0] */
+ 8, 9, 10, 11, 12, 13, 14, 15, /* CH_PRS[15:8] = FPC[15:8] */
+ 16, 17, 18, 19, /* CH_PRS[19:16] = FPC[19:16] */
+ 44, 45, 46, 47, /* CH_PRS[23:20] = FT[3:0] */
+ 50, 51, /* CH_PRS[25:24] = CB[0:1] */
+ 59, /* CH_PRS[26] = FPD */
+ -1, -1, -1, -1, /* CH_PRS[30:27] = Reserved */
+ -1, /* CH_PRS MP[31] There are 5 MPs*/
+ 20, 21, 22, 23, 24, 25, 26, 27, /* OTHER_CH_PRS[7:0] = PSM[7:0] */
+ 28, 29, 30, 31, 32, 33, 34, 35, /* OTHER_CH_PRS[15:8] = PSM[15:8] */
+ 36, 37, 38, 39, 40, 41, 42, 43, /* OTHER_CH_PRS[23:15] = PSM[23:15] */
+ 48, 49, /* OTHER_CH_PRS[25:24] = FT[5:4] */
+ -1, -1, -1, -1, -1, -1, /* OTHER_CH_PRS[31:26] QSFP, SFP */
+ 60, 61, 62, 63, 64, 65, 66, 67, 68, /* CH_PRS_SIB[8:0] = SIB[8:0] */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* CH_PRS_SIB[16:9] = NA */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* CH_PRS_SIB[17:24] = NA */
+ -1, -1, -1, -1, -1, -1, -1 /* CH_PRS_SIB[25:31] = NA */
+};
+
+static int jnx_cbd_fpga_ptx21k_get_channel(u32 bit)
+{
+ if (bit >= ARRAY_SIZE(ptx21k_mux_channel_map) ||
+ ptx21k_mux_channel_map[bit] < 0)
+ return -EINVAL;
+
+ return ptx21k_mux_channel_map[bit];
+}
+
+struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx21k_info = {
+ .platform = JNX_PRODUCT_OMEGA,
+ .assembly_id = JNX_ID_OMEGA_RCB,
+ .cpld_mux_bitmask = {
+ JNX_CBD_FPGA_PTX21K_CPLD_MUX,
+ JNX_CBD_FPGA_PTX21K_CPLD_MUX_HI,
+ },
+ .ch_prs_cb0_bit = JNX_CBD_FPGA_21K_CH_PRS_CB0_PIN,
+ .cpld_prs_set_bitmask = {
+ BIT(31), /* MP */
+ },
+ .cpld_prs_reg = {
+ JNX_CBD_FPGA_CH_PRS_REG,
+ JNX_CBD_FPGA_CH_OTHER_PRS_REG,
+ JNX_CBD_FPGA_21K_CH_PRS_SIB_REG,
+ 0
+ },
+ .cpld_prs_bitmask = {
+ 0,
+ 0,
+ JNX_CBD_FPGA_21K_CH_PRS_SIB_MASK,
+ 0
+ },
+ .mux_channels = ARRAY_SIZE(ptx21k_mux_slot_map),
+ .i2cmux_default_chan = JNX_CBD_FPGA_PTX21K_DEFAULT_CHAN,
+ .i2c_ctlr_name = "",
+ .reset = &jnx_cbd_fpga_ptx21k_device_reset,
+ .get_channel = jnx_cbd_fpga_ptx21k_get_channel,
+ .get_slot_from_chan = jnx_cbd_fpga_ptx21k_get_slot_from_channel,
+};
+EXPORT_SYMBOL_GPL(jnx_cbd_fpga_ptx21k_info);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-ptx3k.c b/drivers/staging/jnx/jnx-cbd-fpga-ptx3k.c
new file mode 100644
index 0000000..ad575c0
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-ptx3k.c
@@ -0,0 +1,111 @@
+/*
+ * Juniper PTX 3000 Control Board (CB) FPGA
+ *
+ * Copyright (C) 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/platform_data/i2c-pca-jnx.h>
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+#define JNX_CBD_FPGA_PTX3K_DEVICE_CTRL_REG 0x00C0
+#define JNX_CBD_FPGA_PTX3K_I2C_CTRL_RESET BIT(24)
+#define JNX_CBD_FPGA_PTX3K_DEFAULT_CHAN 0x10
+
+#define JNX_CBD_FPGA_PTX3K_CPLD_MUX 0xFF
+
+static u32 jnx_cbd_fpga_ptx3k_bitmask[] = {
+ JNX_CBD_FPGA_PTX3K_I2C_CTRL_RESET,
+ 0
+};
+
+static struct jnx_cbd_fpga_dev_reset_data jnx_cbd_fpga_ptx3k_device_reset = {
+ .reg_offset = JNX_CBD_FPGA_PTX3K_DEVICE_CTRL_REG,
+ .bitmasks = jnx_cbd_fpga_ptx3k_bitmask,
+};
+
+/* Table to map from mux channel number to slot */
+
+static s8 ptx3k_mux_slot_map[42] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* FPC */
+ 1, /* 0x10, local */
+ 0, 1, /* 0x11, CB */
+ -1, -1,
+ 0, /* 0x15, FPD */
+ 0, /* 0x16, MP */
+ 0, 1, /* 0x17, fans */
+ -1, -1, -1,
+ 0, 1, 2, 3, 4, /* 0x1c, PSM */
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, /* 0x21, SIB */
+};
+
+static int jnx_cbd_fpga_ptx3k_get_slot_from_channel(int chan)
+{
+ if (chan < 0 || chan >= ARRAY_SIZE(ptx3k_mux_slot_map) ||
+ ptx3k_mux_slot_map[chan] < 0)
+ return -EINVAL;
+
+ return ptx3k_mux_slot_map[chan];
+}
+
+/* Table to map from presence bit to mux channel */
+static s8 ptx3k_mux_channel_map[64] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* FPC */
+ 0x17, 0x18, /* fans */
+ -1, -1, -1,
+ 0x11, 0x12, /* CB */
+ 0x15, /* FPD */
+ -1, -1, -1, -1, -1, -1,
+ 0x16, /* MP */
+ -1,
+ 0x1c, 0x1d, 0x1e, 0x1f, 0x20, /* PSM */
+ 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, /* SIB */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1,
+};
+
+static int jnx_cbd_fpga_ptx3k_get_channel(u32 bit)
+{
+ if (bit > 63 || ptx3k_mux_channel_map[bit] < 0)
+ return -EINVAL;
+
+ return ptx3k_mux_channel_map[bit];
+}
+
+struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx3k_info = {
+ .platform = JNX_PRODUCT_HENDRICKS,
+ .assembly_id = JNX_ID_HENDRICKS_CB,
+ .cpld_mux_bitmask = {
+ JNX_CBD_FPGA_PTX3K_CPLD_MUX,
+ },
+ .cpld_prs_set_bitmask = {
+ BIT(30),
+ },
+ .cpld_prs_reg = {
+ JNX_CBD_FPGA_CH_PRS_REG,
+ JNX_CBD_FPGA_CH_OTHER_PRS_REG,
+ },
+ .ch_prs_cb0_bit = JNX_CBD_FPGA_CH_PRS_CB0_PIN,
+ .mux_channels = 42,
+ .i2cmux_default_chan = JNX_CBD_FPGA_PTX3K_DEFAULT_CHAN,
+ .i2c_ctlr_name = I2C_PCA_JNX_CTLR_NAME,
+ .reset = &jnx_cbd_fpga_ptx3k_device_reset,
+ .get_channel = jnx_cbd_fpga_ptx3k_get_channel,
+ .get_slot_from_chan = jnx_cbd_fpga_ptx3k_get_slot_from_channel,
+};
diff --git a/drivers/staging/jnx/jnx-cbd-fpga-ptx5k.c b/drivers/staging/jnx/jnx-cbd-fpga-ptx5k.c
new file mode 100644
index 0000000..11adc8f
--- /dev/null
+++ b/drivers/staging/jnx/jnx-cbd-fpga-ptx5k.c
@@ -0,0 +1,107 @@
+/*
+ * Juniper PTX 5000 Control Board (CB) FPGA
+ *
+ * Copyright (C) 2012, 2013, 2014 Juniper Networks. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/jnx/board_ids.h>
+#include <linux/jnx/jnx-subsys.h>
+#include <linux/platform_data/i2c-pca-jnx.h>
+#include "jnx-cbd-fpga-core.h"
+#include "jnx-cbd-fpga-platdata.h"
+#include "jnx-subsys-private.h"
+
+#define JNX_CBD_FPGA_PTX5K_DEVICE_CTRL_REG 0x00C0
+#define JNX_CBD_FPGA_PTX5K_I2C_CTRL_RESET BIT(24)
+#define JNX_CBD_FPGA_PTX5K_DEFAULT_CHAN 0x10
+
+#define JNX_CBD_FPGA_PTX5K_CPLD_MUX 0xFF
+
+static u32 jnx_cbd_fpga_ptx5k_bitmask[] = {
+ JNX_CBD_FPGA_PTX5K_I2C_CTRL_RESET,
+ 0
+};
+
+static struct jnx_cbd_fpga_dev_reset_data jnx_cbd_fpga_ptx5k_device_reset = {
+ .reg_offset = JNX_CBD_FPGA_PTX5K_DEVICE_CTRL_REG,
+ .bitmasks = jnx_cbd_fpga_ptx5k_bitmask,
+};
+
+/* Table to map from mux channel number to slot */
+
+static s8 mux_slot_map[30] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* FPC */
+ 1, /* 0x10, local */
+ 0, 1, /* 0x11, CB */
+ 0, 1, /* 0x13, CCG */
+ 0, /* 0x15, FPD */
+ 0, /* 0x16, MP */
+ 0, 1, 2, 3, 4, /* 0x17, fans */
+ 0, 1, /* 0x1c, PDU */
+};
+
+static int jnx_cbd_fpga_ptx5k_get_slot_from_channel(int chan)
+{
+ if (chan < 0 || chan >= ARRAY_SIZE(mux_slot_map))
+ return -EINVAL;
+
+ return mux_slot_map[chan];
+}
+
+/* Table to map from presence bit to mux channel */
+static s8 mux_channel_map[64] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* FPC */
+ 0x17, 0x18, 0x19, 0x1a, 0x1b, /* fans */
+ 0x11, 0x12, /* CB */
+ 0x15, /* FPD */
+ -1, -1, -1, -1,
+ 0x13, 0x14, /* CCG */
+ 0x16, /* MP */
+ -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 0x1c, 0x1d, /* PDU */
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+};
+
+static int jnx_cbd_fpga_ptx5k_get_channel(u32 bit)
+{
+ if (bit > 63)
+ return -EINVAL;
+
+ return mux_channel_map[bit];
+}
+
+struct jnx_cbd_fpga_info jnx_cbd_fpga_ptx5k_info = {
+ .platform = JNX_PRODUCT_SANGRIA,
+ .assembly_id = JNX_ID_SNG_CB,
+ .cpld_mux_bitmask = {
+ JNX_CBD_FPGA_PTX5K_CPLD_MUX,
+ },
+ .cpld_prs_set_bitmask = {
+ BIT(30),
+ },
+ .cpld_prs_reg = {
+ JNX_CBD_FPGA_CH_PRS_REG,
+ JNX_CBD_FPGA_CH_OTHER_PRS_REG,
+ },
+ .ch_prs_cb0_bit = JNX_CBD_FPGA_CH_PRS_CB0_PIN,
+ .mux_channels = 30,
+ .i2cmux_default_chan = JNX_CBD_FPGA_PTX5K_DEFAULT_CHAN,
+ .i2c_ctlr_name = I2C_PCA_JNX_CTLR_NAME,
+ .reset = &jnx_cbd_fpga_ptx5k_device_reset,
+ .get_channel = jnx_cbd_fpga_ptx5k_get_channel,
+ .get_slot_from_chan = jnx_cbd_fpga_ptx5k_get_slot_from_channel,
+};
--
1.9.1
--
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[PATCH 6/6] staging: jnx: CBD-FPGA infrastructure
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- Subject: [PATCH 6/6] staging: jnx: CBD-FPGA infrastructure
- From: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
- Date: Fri, 7 Oct 2016 18:20:14 +0300
- In-reply-to: <1475853614-22409-1-git-send-email-pantelis.antoniou@konsulko.com>
- References: <1475853614-22409-1-git-send-email-pantelis.antoniou@konsulko.com>
- References:
- [PATCH 0/6] Introduce Juniper CBC FPGA
- From: Pantelis Antoniou
- [PATCH 0/6] Introduce Juniper CBC FPGA
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