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-rw-r--r--drivers/fpga/Kconfig6
-rw-r--r--drivers/fpga/Makefile1
-rw-r--r--drivers/fpga/altera-cvp.c49
-rw-r--r--drivers/fpga/altera-ps-spi.c40
-rw-r--r--drivers/fpga/dfl-fme-pr.c2
-rw-r--r--drivers/fpga/dfl-fme-region.c2
-rw-r--r--drivers/fpga/of-fpga-region.c2
-rw-r--r--drivers/fpga/stratix10-soc.c535
-rw-r--r--drivers/fpga/zynq-fpga.c4
9 files changed, 620 insertions, 21 deletions
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 1ebcef4bab5b..0bb7b5cd6cdc 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -56,6 +56,12 @@ config FPGA_MGR_ZYNQ_FPGA
help
FPGA manager driver support for Xilinx Zynq FPGAs.
+config FPGA_MGR_STRATIX10_SOC
+ tristate "Intel Stratix10 SoC FPGA Manager"
+ depends on (ARCH_STRATIX10 && INTEL_STRATIX10_SERVICE)
+ help
+ FPGA manager driver support for the Intel Stratix10 SoC.
+
config FPGA_MGR_XILINX_SPI
tristate "Xilinx Configuration over Slave Serial (SPI)"
depends on SPI
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index 7a2d73ba7122..c0dd4c82fbdb 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_FPGA_MGR_ICE40_SPI) += ice40-spi.o
obj-$(CONFIG_FPGA_MGR_MACHXO2_SPI) += machxo2-spi.o
obj-$(CONFIG_FPGA_MGR_SOCFPGA) += socfpga.o
obj-$(CONFIG_FPGA_MGR_SOCFPGA_A10) += socfpga-a10.o
+obj-$(CONFIG_FPGA_MGR_STRATIX10_SOC) += stratix10-soc.o
obj-$(CONFIG_FPGA_MGR_TS73XX) += ts73xx-fpga.o
obj-$(CONFIG_FPGA_MGR_XILINX_SPI) += xilinx-spi.o
obj-$(CONFIG_FPGA_MGR_ZYNQ_FPGA) += zynq-fpga.o
diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
index 610a1558e0ed..35c3aa5792e2 100644
--- a/drivers/fpga/altera-cvp.c
+++ b/drivers/fpga/altera-cvp.c
@@ -403,6 +403,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
struct altera_cvp_conf *conf;
struct fpga_manager *mgr;
u16 cmd, val;
+ u32 regval;
int ret;
/*
@@ -416,6 +417,14 @@ static int altera_cvp_probe(struct pci_dev *pdev,
return -ENODEV;
}
+ pci_read_config_dword(pdev, VSE_CVP_STATUS, &regval);
+ if (!(regval & VSE_CVP_STATUS_CVP_EN)) {
+ dev_err(&pdev->dev,
+ "CVP is disabled for this device: CVP_STATUS Reg 0x%x\n",
+ regval);
+ return -ENODEV;
+ }
+
conf = devm_kzalloc(&pdev->dev, sizeof(*conf), GFP_KERNEL);
if (!conf)
return -ENOMEM;
@@ -466,18 +475,11 @@ static int altera_cvp_probe(struct pci_dev *pdev,
if (ret)
goto err_unmap;
- ret = driver_create_file(&altera_cvp_driver.driver,
- &driver_attr_chkcfg);
- if (ret) {
- dev_err(&pdev->dev, "Can't create sysfs chkcfg file\n");
- fpga_mgr_unregister(mgr);
- goto err_unmap;
- }
-
return 0;
err_unmap:
- pci_iounmap(pdev, conf->map);
+ if (conf->map)
+ pci_iounmap(pdev, conf->map);
pci_release_region(pdev, CVP_BAR);
err_disable:
cmd &= ~PCI_COMMAND_MEMORY;
@@ -491,16 +493,39 @@ static void altera_cvp_remove(struct pci_dev *pdev)
struct altera_cvp_conf *conf = mgr->priv;
u16 cmd;
- driver_remove_file(&altera_cvp_driver.driver, &driver_attr_chkcfg);
fpga_mgr_unregister(mgr);
- pci_iounmap(pdev, conf->map);
+ if (conf->map)
+ pci_iounmap(pdev, conf->map);
pci_release_region(pdev, CVP_BAR);
pci_read_config_word(pdev, PCI_COMMAND, &cmd);
cmd &= ~PCI_COMMAND_MEMORY;
pci_write_config_word(pdev, PCI_COMMAND, cmd);
}
-module_pci_driver(altera_cvp_driver);
+static int __init altera_cvp_init(void)
+{
+ int ret;
+
+ ret = pci_register_driver(&altera_cvp_driver);
+ if (ret)
+ return ret;
+
+ ret = driver_create_file(&altera_cvp_driver.driver,
+ &driver_attr_chkcfg);
+ if (ret)
+ pr_warn("Can't create sysfs chkcfg file\n");
+
+ return 0;
+}
+
+static void __exit altera_cvp_exit(void)
+{
+ driver_remove_file(&altera_cvp_driver.driver, &driver_attr_chkcfg);
+ pci_unregister_driver(&altera_cvp_driver);
+}
+
+module_init(altera_cvp_init);
+module_exit(altera_cvp_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
diff --git a/drivers/fpga/altera-ps-spi.c b/drivers/fpga/altera-ps-spi.c
index 33aafda50af5..8c18beec6b57 100644
--- a/drivers/fpga/altera-ps-spi.c
+++ b/drivers/fpga/altera-ps-spi.c
@@ -75,6 +75,12 @@ static struct altera_ps_data a10_data = {
.t_st2ck_us = 10, /* min(t_ST2CK) */
};
+/* Array index is enum altera_ps_devtype */
+static const struct altera_ps_data *altera_ps_data_map[] = {
+ &c5_data,
+ &a10_data,
+};
+
static const struct of_device_id of_ef_match[] = {
{ .compatible = "altr,fpga-passive-serial", .data = &c5_data },
{ .compatible = "altr,fpga-arria10-passive-serial", .data = &a10_data },
@@ -234,6 +240,22 @@ static const struct fpga_manager_ops altera_ps_ops = {
.write_complete = altera_ps_write_complete,
};
+static const struct altera_ps_data *id_to_data(const struct spi_device_id *id)
+{
+ kernel_ulong_t devtype = id->driver_data;
+ const struct altera_ps_data *data;
+
+ /* someone added a altera_ps_devtype without adding to the map array */
+ if (devtype >= ARRAY_SIZE(altera_ps_data_map))
+ return NULL;
+
+ data = altera_ps_data_map[devtype];
+ if (!data || data->devtype != devtype)
+ return NULL;
+
+ return data;
+}
+
static int altera_ps_probe(struct spi_device *spi)
{
struct altera_ps_conf *conf;
@@ -244,11 +266,17 @@ static int altera_ps_probe(struct spi_device *spi)
if (!conf)
return -ENOMEM;
- of_id = of_match_device(of_ef_match, &spi->dev);
- if (!of_id)
- return -ENODEV;
+ if (spi->dev.of_node) {
+ of_id = of_match_device(of_ef_match, &spi->dev);
+ if (!of_id)
+ return -ENODEV;
+ conf->data = of_id->data;
+ } else {
+ conf->data = id_to_data(spi_get_device_id(spi));
+ if (!conf->data)
+ return -ENODEV;
+ }
- conf->data = of_id->data;
conf->spi = spi;
conf->config = devm_gpiod_get(&spi->dev, "nconfig", GPIOD_OUT_LOW);
if (IS_ERR(conf->config)) {
@@ -294,7 +322,9 @@ static int altera_ps_remove(struct spi_device *spi)
}
static const struct spi_device_id altera_ps_spi_ids[] = {
- {"cyclone-ps-spi", 0},
+ { "cyclone-ps-spi", CYCLONE5 },
+ { "fpga-passive-serial", CYCLONE5 },
+ { "fpga-arria10-passive-serial", ARRIA10 },
{}
};
MODULE_DEVICE_TABLE(spi, altera_ps_spi_ids);
diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
index 0b840531ef33..fe5a5578fbf7 100644
--- a/drivers/fpga/dfl-fme-pr.c
+++ b/drivers/fpga/dfl-fme-pr.c
@@ -444,10 +444,8 @@ static void pr_mgmt_uinit(struct platform_device *pdev,
struct dfl_feature *feature)
{
struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
- struct dfl_fme *priv;
mutex_lock(&pdata->lock);
- priv = dfl_fpga_pdata_get_private(pdata);
dfl_fme_destroy_regions(pdata);
dfl_fme_destroy_bridges(pdata);
diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c
index ec134ec93f08..1eeb42af1012 100644
--- a/drivers/fpga/dfl-fme-region.c
+++ b/drivers/fpga/dfl-fme-region.c
@@ -64,7 +64,7 @@ eprobe_mgr_put:
static int fme_region_remove(struct platform_device *pdev)
{
- struct fpga_region *region = dev_get_drvdata(&pdev->dev);
+ struct fpga_region *region = platform_get_drvdata(pdev);
struct fpga_manager *mgr = region->mgr;
fpga_region_unregister(region);
diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c
index 122286fd255a..75f64abf9c81 100644
--- a/drivers/fpga/of-fpga-region.c
+++ b/drivers/fpga/of-fpga-region.c
@@ -421,7 +421,7 @@ static int of_fpga_region_probe(struct platform_device *pdev)
goto eprobe_mgr_put;
of_platform_populate(np, fpga_region_of_match, NULL, &region->dev);
- dev_set_drvdata(dev, region);
+ platform_set_drvdata(pdev, region);
dev_info(dev, "FPGA Region probed\n");
diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
new file mode 100644
index 000000000000..a1a09e04fab8
--- /dev/null
+++ b/drivers/fpga/stratix10-soc.c
@@ -0,0 +1,535 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * FPGA Manager Driver for Intel Stratix10 SoC
+ *
+ * Copyright (C) 2018 Intel Corporation
+ */
+#include <linux/completion.h>
+#include <linux/fpga/fpga-mgr.h>
+#include <linux/firmware/intel/stratix10-svc-client.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+/*
+ * FPGA programming requires a higher level of privilege (EL3), per the SoC
+ * design.
+ */
+#define NUM_SVC_BUFS 4
+#define SVC_BUF_SIZE SZ_512K
+
+/* Indicates buffer is in use if set */
+#define SVC_BUF_LOCK 0
+
+#define S10_BUFFER_TIMEOUT (msecs_to_jiffies(SVC_RECONFIG_BUFFER_TIMEOUT_MS))
+#define S10_RECONFIG_TIMEOUT (msecs_to_jiffies(SVC_RECONFIG_REQUEST_TIMEOUT_MS))
+
+/*
+ * struct s10_svc_buf
+ * buf: virtual address of buf provided by service layer
+ * lock: locked if buffer is in use
+ */
+struct s10_svc_buf {
+ char *buf;
+ unsigned long lock;
+};
+
+struct s10_priv {
+ struct stratix10_svc_chan *chan;
+ struct stratix10_svc_client client;
+ struct completion status_return_completion;
+ struct s10_svc_buf svc_bufs[NUM_SVC_BUFS];
+ unsigned long status;
+};
+
+static int s10_svc_send_msg(struct s10_priv *priv,
+ enum stratix10_svc_command_code command,
+ void *payload, u32 payload_length)
+{
+ struct stratix10_svc_chan *chan = priv->chan;
+ struct device *dev = priv->client.dev;
+ struct stratix10_svc_client_msg msg;
+ int ret;
+
+ dev_dbg(dev, "%s cmd=%d payload=%p length=%d\n",
+ __func__, command, payload, payload_length);
+
+ msg.command = command;
+ msg.payload = payload;
+ msg.payload_length = payload_length;
+
+ ret = stratix10_svc_send(chan, &msg);
+ dev_dbg(dev, "stratix10_svc_send returned status %d\n", ret);
+
+ return ret;
+}
+
+/*
+ * Free buffers allocated from the service layer's pool that are not in use.
+ * Return true when all buffers are freed.
+ */
+static bool s10_free_buffers(struct fpga_manager *mgr)
+{
+ struct s10_priv *priv = mgr->priv;
+ uint num_free = 0;
+ uint i;
+
+ for (i = 0; i < NUM_SVC_BUFS; i++) {
+ if (!priv->svc_bufs[i].buf) {
+ num_free++;
+ continue;
+ }
+
+ if (!test_and_set_bit_lock(SVC_BUF_LOCK,
+ &priv->svc_bufs[i].lock)) {
+ stratix10_svc_free_memory(priv->chan,
+ priv->svc_bufs[i].buf);
+ priv->svc_bufs[i].buf = NULL;
+ num_free++;
+ }
+ }
+
+ return num_free == NUM_SVC_BUFS;
+}
+
+/*
+ * Returns count of how many buffers are not in use.
+ */
+static uint s10_free_buffer_count(struct fpga_manager *mgr)
+{
+ struct s10_priv *priv = mgr->priv;
+ uint num_free = 0;
+ uint i;
+
+ for (i = 0; i < NUM_SVC_BUFS; i++)
+ if (!priv->svc_bufs[i].buf)
+ num_free++;
+
+ return num_free;
+}
+
+/*
+ * s10_unlock_bufs
+ * Given the returned buffer address, match that address to our buffer struct
+ * and unlock that buffer. This marks it as available to be refilled and sent
+ * (or freed).
+ * priv: private data
+ * kaddr: kernel address of buffer that was returned from service layer
+ */
+static void s10_unlock_bufs(struct s10_priv *priv, void *kaddr)
+{
+ uint i;
+
+ if (!kaddr)
+ return;
+
+ for (i = 0; i < NUM_SVC_BUFS; i++)
+ if (priv->svc_bufs[i].buf == kaddr) {
+ clear_bit_unlock(SVC_BUF_LOCK,
+ &priv->svc_bufs[i].lock);
+ return;
+ }
+
+ WARN(1, "Unknown buffer returned from service layer %p\n", kaddr);
+}
+
+/*
+ * s10_receive_callback - callback for service layer to use to provide client
+ * (this driver) messages received through the mailbox.
+ * client: service layer client struct
+ * data: message from service layer
+ */
+static void s10_receive_callback(struct stratix10_svc_client *client,
+ struct stratix10_svc_cb_data *data)
+{
+ struct s10_priv *priv = client->priv;
+ u32 status;
+ int i;
+
+ WARN_ONCE(!data, "%s: stratix10_svc_rc_data = NULL", __func__);
+
+ status = data->status;
+
+ /*
+ * Here we set status bits as we receive them. Elsewhere, we always use
+ * test_and_clear_bit() to check status in priv->status
+ */
+ for (i = 0; i <= SVC_STATUS_RECONFIG_ERROR; i++)
+ if (status & (1 << i))
+ set_bit(i, &priv->status);
+
+ if (status & BIT(SVC_STATUS_RECONFIG_BUFFER_DONE)) {
+ s10_unlock_bufs(priv, data->kaddr1);
+ s10_unlock_bufs(priv, data->kaddr2);
+ s10_unlock_bufs(priv, data->kaddr3);
+ }
+
+ complete(&priv->status_return_completion);
+}
+
+/*
+ * s10_ops_write_init - prepare for FPGA reconfiguration by requesting
+ * partial reconfig and allocating buffers from the service layer.
+ */
+static int s10_ops_write_init(struct fpga_manager *mgr,
+ struct fpga_image_info *info,
+ const char *buf, size_t count)
+{
+ struct s10_priv *priv = mgr->priv;
+ struct device *dev = priv->client.dev;
+ struct stratix10_svc_command_config_type ctype;
+ char *kbuf;
+ uint i;
+ int ret;
+
+ ctype.flags = 0;
+ if (info->flags & FPGA_MGR_PARTIAL_RECONFIG) {
+ dev_dbg(dev, "Requesting partial reconfiguration.\n");
+ ctype.flags |= BIT(COMMAND_RECONFIG_FLAG_PARTIAL);
+ } else {
+ dev_dbg(dev, "Requesting full reconfiguration.\n");
+ }
+
+ reinit_completion(&priv->status_return_completion);
+ ret = s10_svc_send_msg(priv, COMMAND_RECONFIG,
+ &ctype, sizeof(ctype));
+ if (ret < 0)
+ goto init_done;
+
+ ret = wait_for_completion_interruptible_timeout(
+ &priv->status_return_completion, S10_RECONFIG_TIMEOUT);
+ if (!ret) {
+ dev_err(dev, "timeout waiting for RECONFIG_REQUEST\n");
+ ret = -ETIMEDOUT;
+ goto init_done;
+ }
+ if (ret < 0) {
+ dev_err(dev, "error (%d) waiting for RECONFIG_REQUEST\n", ret);
+ goto init_done;
+ }
+
+ ret = 0;
+ if (!test_and_clear_bit(SVC_STATUS_RECONFIG_REQUEST_OK,
+ &priv->status)) {
+ ret = -ETIMEDOUT;
+ goto init_done;
+ }
+
+ /* Allocate buffers from the service layer's pool. */
+ for (i = 0; i < NUM_SVC_BUFS; i++) {
+ kbuf = stratix10_svc_allocate_memory(priv->chan, SVC_BUF_SIZE);
+ if (!kbuf) {
+ s10_free_buffers(mgr);
+ ret = -ENOMEM;
+ goto init_done;
+ }
+
+ priv->svc_bufs[i].buf = kbuf;
+ priv->svc_bufs[i].lock = 0;
+ }
+
+init_done:
+ stratix10_svc_done(priv->chan);
+ return ret;
+}
+
+/*
+ * s10_send_buf - send a buffer to the service layer queue
+ * mgr: fpga manager struct
+ * buf: fpga image buffer
+ * count: size of buf in bytes
+ * Returns # of bytes transferred or -ENOBUFS if the all the buffers are in use
+ * or if the service queue is full. Never returns 0.
+ */
+static int s10_send_buf(struct fpga_manager *mgr, const char *buf, size_t count)
+{
+ struct s10_priv *priv = mgr->priv;
+ struct device *dev = priv->client.dev;
+ void *svc_buf;
+ size_t xfer_sz;
+ int ret;
+ uint i;
+
+ /* get/lock a buffer that that's not being used */
+ for (i = 0; i < NUM_SVC_BUFS; i++)
+ if (!test_and_set_bit_lock(SVC_BUF_LOCK,
+ &priv->svc_bufs[i].lock))
+ break;
+
+ if (i == NUM_SVC_BUFS)
+ return -ENOBUFS;
+
+ xfer_sz = count < SVC_BUF_SIZE ? count : SVC_BUF_SIZE;
+
+ svc_buf = priv->svc_bufs[i].buf;
+ memcpy(svc_buf, buf, xfer_sz);
+ ret = s10_svc_send_msg(priv, COMMAND_RECONFIG_DATA_SUBMIT,
+ svc_buf, xfer_sz);
+ if (ret < 0) {
+ dev_err(dev,
+ "Error while sending data to service layer (%d)", ret);
+ clear_bit_unlock(SVC_BUF_LOCK, &priv->svc_bufs[i].lock);
+ return ret;
+ }
+
+ return xfer_sz;
+}
+
+/*
+ * Send a FPGA image to privileged layers to write to the FPGA. When done
+ * sending, free all service layer buffers we allocated in write_init.
+ */
+static int s10_ops_write(struct fpga_manager *mgr, const char *buf,
+ size_t count)
+{
+ struct s10_priv *priv = mgr->priv;
+ struct device *dev = priv->client.dev;
+ long wait_status;
+ int sent = 0;
+ int ret = 0;
+
+ /*
+ * Loop waiting for buffers to be returned. When a buffer is returned,
+ * reuse it to send more data or free if if all data has been sent.
+ */
+ while (count > 0 || s10_free_buffer_count(mgr) != NUM_SVC_BUFS) {
+ reinit_completion(&priv->status_return_completion);
+
+ if (count > 0) {
+ sent = s10_send_buf(mgr, buf, count);
+ if (sent < 0)
+ continue;
+
+ count -= sent;
+ buf += sent;
+ } else {
+ if (s10_free_buffers(mgr))
+ return 0;
+
+ ret = s10_svc_send_msg(
+ priv, COMMAND_RECONFIG_DATA_CLAIM,
+ NULL, 0);
+ if (ret < 0)
+ break;
+ }
+
+ /*
+ * If callback hasn't already happened, wait for buffers to be
+ * returned from service layer
+ */
+ wait_status = 1; /* not timed out */
+ if (!priv->status)
+ wait_status = wait_for_completion_interruptible_timeout(
+ &priv->status_return_completion,
+ S10_BUFFER_TIMEOUT);
+
+ if (test_and_clear_bit(SVC_STATUS_RECONFIG_BUFFER_DONE,
+ &priv->status) ||
+ test_and_clear_bit(SVC_STATUS_RECONFIG_BUFFER_SUBMITTED,
+ &priv->status)) {
+ ret = 0;
+ continue;
+ }
+
+ if (test_and_clear_bit(SVC_STATUS_RECONFIG_ERROR,
+ &priv->status)) {
+ dev_err(dev, "ERROR - giving up - SVC_STATUS_RECONFIG_ERROR\n");
+ ret = -EFAULT;
+ break;
+ }
+
+ if (!wait_status) {
+ dev_err(dev, "timeout waiting for svc layer buffers\n");
+ ret = -ETIMEDOUT;
+ break;
+ }
+ if (wait_status < 0) {
+ ret = wait_status;
+ dev_err(dev,
+ "error (%d) waiting for svc layer buffers\n",
+ ret);
+ break;
+ }
+ }
+
+ if (!s10_free_buffers(mgr))
+ dev_err(dev, "%s not all buffers were freed\n", __func__);
+
+ return ret;
+}
+
+static int s10_ops_write_complete(struct fpga_manager *mgr,
+ struct fpga_image_info *info)
+{
+ struct s10_priv *priv = mgr->priv;
+ struct device *dev = priv->client.dev;
+ unsigned long timeout;
+ int ret;
+
+ timeout = usecs_to_jiffies(info->config_complete_timeout_us);
+
+ do {
+ reinit_completion(&priv->status_return_completion);
+
+ ret = s10_svc_send_msg(priv, COMMAND_RECONFIG_STATUS, NULL, 0);
+ if (ret < 0)
+ break;
+
+ ret = wait_for_completion_interruptible_timeout(
+ &priv->status_return_completion, timeout);
+ if (!ret) {
+ dev_err(dev,
+ "timeout waiting for RECONFIG_COMPLETED\n");
+ ret = -ETIMEDOUT;
+ break;
+ }
+ if (ret < 0) {
+ dev_err(dev,
+ "error (%d) waiting for RECONFIG_COMPLETED\n",
+ ret);
+ break;
+ }
+ /* Not error or timeout, so ret is # of jiffies until timeout */
+ timeout = ret;
+ ret = 0;
+
+ if (test_and_clear_bit(SVC_STATUS_RECONFIG_COMPLETED,
+ &priv->status))
+ break;
+
+ if (test_and_clear_bit(SVC_STATUS_RECONFIG_ERROR,
+ &priv->status)) {
+ dev_err(dev, "ERROR - giving up - SVC_STATUS_RECONFIG_ERROR\n");
+ ret = -EFAULT;
+ break;
+ }
+ } while (1);
+
+ stratix10_svc_done(priv->chan);
+
+ return ret;
+}
+
+static enum fpga_mgr_states s10_ops_state(struct fpga_manager *mgr)
+{
+ return FPGA_MGR_STATE_UNKNOWN;
+}
+
+static const struct fpga_manager_ops s10_ops = {
+ .state = s10_ops_state,
+ .write_init = s10_ops_write_init,
+ .write = s10_ops_write,
+ .write_complete = s10_ops_write_complete,
+};
+
+static int s10_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct s10_priv *priv;
+ struct fpga_manager *mgr;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client.dev = dev;
+ priv->client.receive_cb = s10_receive_callback;
+ priv->client.priv = priv;
+
+ priv->chan = stratix10_svc_request_channel_byname(&priv->client,
+ SVC_CLIENT_FPGA);
+ if (IS_ERR(priv->chan)) {
+ dev_err(dev, "couldn't get service channel (%s)\n",
+ SVC_CLIENT_FPGA);
+ return PTR_ERR(priv->chan);
+ }
+
+ init_completion(&priv->status_return_completion);
+
+ mgr = fpga_mgr_create(dev, "Stratix10 SOC FPGA Manager",
+ &s10_ops, priv);
+ if (!mgr) {
+ dev_err(dev, "unable to create FPGA manager\n");
+ ret = -ENOMEM;
+ goto probe_err;
+ }
+
+ ret = fpga_mgr_register(mgr);
+ if (ret) {
+ dev_err(dev, "unable to register FPGA manager\n");
+ fpga_mgr_free(mgr);
+ goto probe_err;
+ }
+
+ platform_set_drvdata(pdev, mgr);
+ return ret;
+
+probe_err:
+ stratix10_svc_free_channel(priv->chan);
+ return ret;
+}
+
+static int s10_remove(struct platform_device *pdev)
+{
+ struct fpga_manager *mgr = platform_get_drvdata(pdev);
+ struct s10_priv *priv = mgr->priv;
+
+ fpga_mgr_unregister(mgr);
+ stratix10_svc_free_channel(priv->chan);
+
+ return 0;
+}
+
+static const struct of_device_id s10_of_match[] = {
+ { .compatible = "intel,stratix10-soc-fpga-mgr", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, s10_of_match);
+
+static struct platform_driver s10_driver = {
+ .probe = s10_probe,
+ .remove = s10_remove,
+ .driver = {
+ .name = "Stratix10 SoC FPGA manager",
+ .of_match_table = of_match_ptr(s10_of_match),
+ },
+};
+
+static int __init s10_init(void)
+{
+ struct device_node *fw_np;
+ struct device_node *np;
+ int ret;
+
+ fw_np = of_find_node_by_name(NULL, "svc");
+ if (!fw_np)
+ return -ENODEV;
+
+ np = of_find_matching_node(fw_np, s10_of_match);
+ if (!np) {
+ of_node_put(fw_np);
+ return -ENODEV;
+ }
+
+ of_node_put(np);
+ ret = of_platform_populate(fw_np, s10_of_match, NULL, NULL);
+ of_node_put(fw_np);
+ if (ret)
+ return ret;
+
+ return platform_driver_register(&s10_driver);
+}
+
+static void __exit s10_exit(void)
+{
+ return platform_driver_unregister(&s10_driver);
+}
+
+module_init(s10_init);
+module_exit(s10_exit);
+
+MODULE_AUTHOR("Alan Tull <atull@kernel.org>");
+MODULE_DESCRIPTION("Intel Stratix 10 SOC FPGA Manager");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/fpga/zynq-fpga.c b/drivers/fpga/zynq-fpga.c
index bb82efeebb9d..57b0e6775958 100644
--- a/drivers/fpga/zynq-fpga.c
+++ b/drivers/fpga/zynq-fpga.c
@@ -501,6 +501,10 @@ static int zynq_fpga_ops_write_complete(struct fpga_manager *mgr,
if (err)
return err;
+ /* Release 'PR' control back to the ICAP */
+ zynq_fpga_write(priv, CTRL_OFFSET,
+ zynq_fpga_read(priv, CTRL_OFFSET) & ~CTRL_PCAP_PR_MASK);
+
err = zynq_fpga_poll_timeout(priv, INT_STS_OFFSET, intr_status,
intr_status & IXR_PCFG_DONE_MASK,
INIT_POLL_DELAY,
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-22 01:50:57 +0300