From 2e8438b754abcf13f2306237bd0bfe6e7dcb379a Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:42 -0700 Subject: fpga: fpga-mgr: wrap the write_init() op An FPGA manager should not be required to provide a write_init() op if there is nothing for it do. So add a wrapper and move the op checking. Default to success. [mdf@kernel.org: Reworded first line] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index ecb4c3c795fa..c047de8a059b 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,15 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +static inline int fpga_mgr_write_init(struct fpga_manager *mgr, + struct fpga_image_info *info, + const char *buf, size_t count) +{ + if (mgr->mops->write_init) + return mgr->mops->write_init(mgr, info, buf, count); + return 0; +} + /** * fpga_image_info_alloc - Allocate an FPGA image info struct * @dev: owning device @@ -83,9 +92,9 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr, mgr->state = FPGA_MGR_STATE_WRITE_INIT; if (!mgr->mops->initial_header_size) - ret = mgr->mops->write_init(mgr, info, NULL, 0); + ret = fpga_mgr_write_init(mgr, info, NULL, 0); else - ret = mgr->mops->write_init( + ret = fpga_mgr_write_init( mgr, info, buf, min(mgr->mops->initial_header_size, count)); if (ret) { @@ -569,7 +578,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, int id, ret; if (!mops || !mops->write_complete || !mops->state || - !mops->write_init || (!mops->write && !mops->write_sg) || + (!mops->write && !mops->write_sg) || (mops->write && mops->write_sg)) { dev_err(parent, "Attempt to register without fpga_manager_ops\n"); return NULL; -- cgit v1.2.3 From 72d935020ea81c0092c23b580352fe1310505c28 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:43 -0700 Subject: fpga: fpga-mgr: make write_complete() op optional An FPGA manager should not be required to provide a write_complete function if there is nothing. Move the op check to the existing wrapper. Default to success and remove noop function. [mdf@kernel.org: Reworded message] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 45 +++++++++++++++++++++++---------------------- drivers/fpga/zynqmp-fpga.c | 7 ------- 2 files changed, 23 insertions(+), 29 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index c047de8a059b..05a69ab3ecb9 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,28 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +/* + * After all the FPGA image has been written, do the device specific steps to + * finish and set the FPGA into operating mode. + */ +static inline int fpga_mgr_write_complete(struct fpga_manager *mgr, + struct fpga_image_info *info) +{ + int ret = 0; + + mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE; + if (mgr->mops->write_complete) + ret = mgr->mops->write_complete(mgr, info); + if (ret) { + dev_err(&mgr->dev, "Error after writing image data to FPGA\n"); + mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE_ERR; + return ret; + } + mgr->state = FPGA_MGR_STATE_OPERATING; + + return 0; +} + static inline int fpga_mgr_write_init(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t count) @@ -146,27 +168,6 @@ static int fpga_mgr_write_init_sg(struct fpga_manager *mgr, return ret; } -/* - * After all the FPGA image has been written, do the device specific steps to - * finish and set the FPGA into operating mode. - */ -static int fpga_mgr_write_complete(struct fpga_manager *mgr, - struct fpga_image_info *info) -{ - int ret; - - mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE; - ret = mgr->mops->write_complete(mgr, info); - if (ret) { - dev_err(&mgr->dev, "Error after writing image data to FPGA\n"); - mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE_ERR; - return ret; - } - mgr->state = FPGA_MGR_STATE_OPERATING; - - return 0; -} - /** * fpga_mgr_buf_load_sg - load fpga from image in buffer from a scatter list * @mgr: fpga manager @@ -577,7 +578,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, struct fpga_manager *mgr; int id, ret; - if (!mops || !mops->write_complete || !mops->state || + if (!mops || !mops->state || (!mops->write && !mops->write_sg) || (mops->write && mops->write_sg)) { dev_err(parent, "Attempt to register without fpga_manager_ops\n"); diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c index b3240f75f0c7..7d3d5650c322 100644 --- a/drivers/fpga/zynqmp-fpga.c +++ b/drivers/fpga/zynqmp-fpga.c @@ -66,12 +66,6 @@ static int zynqmp_fpga_ops_write(struct fpga_manager *mgr, return ret; } -static int zynqmp_fpga_ops_write_complete(struct fpga_manager *mgr, - struct fpga_image_info *info) -{ - return 0; -} - static enum fpga_mgr_states zynqmp_fpga_ops_state(struct fpga_manager *mgr) { u32 status = 0; @@ -87,7 +81,6 @@ static const struct fpga_manager_ops zynqmp_fpga_ops = { .state = zynqmp_fpga_ops_state, .write_init = zynqmp_fpga_ops_write_init, .write = zynqmp_fpga_ops_write, - .write_complete = zynqmp_fpga_ops_write_complete, }; static int zynqmp_fpga_probe(struct platform_device *pdev) -- cgit v1.2.3 From 8ebab40fd8f1683140890a77fadf571db98686b8 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:44 -0700 Subject: fpga: fpga-mgr: wrap the write() op An FPGA manager should not be required to provide a write function. Move the op check to the wrapper. Default to -EOPNOTSUP so its users will fail gracefully. [mdf@kernel.org: Reworded message] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index 05a69ab3ecb9..8d5536d74808 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,13 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +static inline int fpga_mgr_write(struct fpga_manager *mgr, const char *buf, size_t count) +{ + if (mgr->mops->write) + return mgr->mops->write(mgr, buf, count); + return -EOPNOTSUPP; +} + /* * After all the FPGA image has been written, do the device specific steps to * finish and set the FPGA into operating mode. @@ -204,7 +211,7 @@ static int fpga_mgr_buf_load_sg(struct fpga_manager *mgr, sg_miter_start(&miter, sgt->sgl, sgt->nents, SG_MITER_FROM_SG); while (sg_miter_next(&miter)) { - ret = mgr->mops->write(mgr, miter.addr, miter.length); + ret = fpga_mgr_write(mgr, miter.addr, miter.length); if (ret) break; } @@ -234,7 +241,7 @@ static int fpga_mgr_buf_load_mapped(struct fpga_manager *mgr, * Write the FPGA image to the FPGA. */ mgr->state = FPGA_MGR_STATE_WRITE; - ret = mgr->mops->write(mgr, buf, count); + ret = fpga_mgr_write(mgr, buf, count); if (ret) { dev_err(&mgr->dev, "Error while writing image data to FPGA\n"); mgr->state = FPGA_MGR_STATE_WRITE_ERR; @@ -578,9 +585,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, struct fpga_manager *mgr; int id, ret; - if (!mops || !mops->state || - (!mops->write && !mops->write_sg) || - (mops->write && mops->write_sg)) { + if (!mops || !mops->state) { dev_err(parent, "Attempt to register without fpga_manager_ops\n"); return NULL; } -- cgit v1.2.3 From 6f9922711359d2092fb91036193dfed0d1bdf8b8 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:45 -0700 Subject: fpga: fpga-mgr: wrap the status() op An FPGA manager is not required to provide a status() op. Add a wrapper consistent with the other op wrappers. Move the op check to the wrapper. Default to 0, no errors to report. [mdf@kernel.org: Reworded first line] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index 8d5536d74808..43518b6eed21 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,13 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +static inline u64 fpga_mgr_status(struct fpga_manager *mgr) +{ + if (mgr->mops->status) + return mgr->mops->status(mgr); + return 0; +} + static inline int fpga_mgr_write(struct fpga_manager *mgr, const char *buf, size_t count) { if (mgr->mops->write) @@ -434,10 +441,7 @@ static ssize_t status_show(struct device *dev, u64 status; int len = 0; - if (!mgr->mops->status) - return -ENOENT; - - status = mgr->mops->status(mgr); + status = fpga_mgr_status(mgr); if (status & FPGA_MGR_STATUS_OPERATION_ERR) len += sprintf(buf + len, "reconfig operation error\n"); -- cgit v1.2.3 From b02a40713db95ebd8f72151b0fea8080d9f74c27 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:46 -0700 Subject: fpga: fpga-mgr: wrap the state() op An FPGA manager should not be required to provide a state() op. Add a wrapper consistent with the other op wrappers. Move op check to wrapper. Default to FPGA_MGR_STATE_UNKNOWN, what noop state() ops use. Remove unneeded noop state() ops [mdf@kernel.org: Reworded first line] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/dfl-fme-mgr.c | 6 ------ drivers/fpga/fpga-mgr.c | 11 +++++++++-- drivers/fpga/stratix10-soc.c | 6 ------ drivers/fpga/ts73xx-fpga.c | 6 ------ 4 files changed, 9 insertions(+), 20 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/dfl-fme-mgr.c b/drivers/fpga/dfl-fme-mgr.c index d5861d13b306..313420405d5e 100644 --- a/drivers/fpga/dfl-fme-mgr.c +++ b/drivers/fpga/dfl-fme-mgr.c @@ -252,11 +252,6 @@ static int fme_mgr_write_complete(struct fpga_manager *mgr, return 0; } -static enum fpga_mgr_states fme_mgr_state(struct fpga_manager *mgr) -{ - return FPGA_MGR_STATE_UNKNOWN; -} - static u64 fme_mgr_status(struct fpga_manager *mgr) { struct fme_mgr_priv *priv = mgr->priv; @@ -268,7 +263,6 @@ static const struct fpga_manager_ops fme_mgr_ops = { .write_init = fme_mgr_write_init, .write = fme_mgr_write, .write_complete = fme_mgr_write_complete, - .state = fme_mgr_state, .status = fme_mgr_status, }; diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index 43518b6eed21..b3380ad341d2 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,13 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +static inline enum fpga_mgr_states fpga_mgr_state(struct fpga_manager *mgr) +{ + if (mgr->mops->state) + return mgr->mops->state(mgr); + return FPGA_MGR_STATE_UNKNOWN; +} + static inline u64 fpga_mgr_status(struct fpga_manager *mgr) { if (mgr->mops->status) @@ -589,7 +596,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name, struct fpga_manager *mgr; int id, ret; - if (!mops || !mops->state) { + if (!mops) { dev_err(parent, "Attempt to register without fpga_manager_ops\n"); return NULL; } @@ -707,7 +714,7 @@ int fpga_mgr_register(struct fpga_manager *mgr) * from device. FPGA may be in reset mode or may have been programmed * by bootloader or EEPROM. */ - mgr->state = mgr->mops->state(mgr); + mgr->state = fpga_mgr_state(mgr); ret = device_add(&mgr->dev); if (ret) diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c index a2cea500f7cc..047fd7f23706 100644 --- a/drivers/fpga/stratix10-soc.c +++ b/drivers/fpga/stratix10-soc.c @@ -388,13 +388,7 @@ static int s10_ops_write_complete(struct fpga_manager *mgr, 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, diff --git a/drivers/fpga/ts73xx-fpga.c b/drivers/fpga/ts73xx-fpga.c index 101f016c6ed8..167abb0b08d4 100644 --- a/drivers/fpga/ts73xx-fpga.c +++ b/drivers/fpga/ts73xx-fpga.c @@ -32,11 +32,6 @@ struct ts73xx_fpga_priv { struct device *dev; }; -static enum fpga_mgr_states ts73xx_fpga_state(struct fpga_manager *mgr) -{ - return FPGA_MGR_STATE_UNKNOWN; -} - static int ts73xx_fpga_write_init(struct fpga_manager *mgr, struct fpga_image_info *info, const char *buf, size_t count) @@ -98,7 +93,6 @@ static int ts73xx_fpga_write_complete(struct fpga_manager *mgr, } static const struct fpga_manager_ops ts73xx_fpga_ops = { - .state = ts73xx_fpga_state, .write_init = ts73xx_fpga_write_init, .write = ts73xx_fpga_write, .write_complete = ts73xx_fpga_write_complete, -- cgit v1.2.3 From 6489d3b00398f02457eea566d4a99698c68cc89f Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:47 -0700 Subject: fpga: fpga-mgr: wrap the fpga_remove() op An FPGA manager is not required to provide a fpga_remove() op. Add a wrapper consistent with the other op wrappers. Move op check to wrapper. [mdf@kernel.org: Reworded first line] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index b3380ad341d2..077c0f9edbe4 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -25,6 +25,12 @@ struct fpga_mgr_devres { struct fpga_manager *mgr; }; +static inline void fpga_mgr_fpga_remove(struct fpga_manager *mgr) +{ + if (mgr->mops->fpga_remove) + mgr->mops->fpga_remove(mgr); +} + static inline enum fpga_mgr_states fpga_mgr_state(struct fpga_manager *mgr) { if (mgr->mops->state) @@ -745,8 +751,7 @@ void fpga_mgr_unregister(struct fpga_manager *mgr) * If the low level driver provides a method for putting fpga into * a desired state upon unregister, do it. */ - if (mgr->mops->fpga_remove) - mgr->mops->fpga_remove(mgr); + fpga_mgr_fpga_remove(mgr); device_unregister(&mgr->dev); } -- cgit v1.2.3 From 630211a17055bafd21fb83ae8c0002b2e214ebb2 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Fri, 25 Jun 2021 12:51:48 -0700 Subject: fpga: fpga-mgr: wrap the write_sg() op An FPGA manager should not be required to provide a write_sg function. Move the op check to the wrapper. Default to -EOPNOTSUP so its users will fail gracefully. [mdf@kernel.org: Reworded first line] Signed-off-by: Tom Rix Signed-off-by: Moritz Fischer --- drivers/fpga/fpga-mgr.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/fpga/fpga-mgr.c') diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c index 077c0f9edbe4..aa30889e2320 100644 --- a/drivers/fpga/fpga-mgr.c +++ b/drivers/fpga/fpga-mgr.c @@ -83,6 +83,14 @@ static inline int fpga_mgr_write_init(struct fpga_manager *mgr, return 0; } +static inline int fpga_mgr_write_sg(struct fpga_manager *mgr, + struct sg_table *sgt) +{ + if (mgr->mops->write_sg) + return mgr->mops->write_sg(mgr, sgt); + return -EOPNOTSUPP; +} + /** * fpga_image_info_alloc - Allocate an FPGA image info struct * @dev: owning device @@ -225,7 +233,7 @@ static int fpga_mgr_buf_load_sg(struct fpga_manager *mgr, /* Write the FPGA image to the FPGA. */ mgr->state = FPGA_MGR_STATE_WRITE; if (mgr->mops->write_sg) { - ret = mgr->mops->write_sg(mgr, sgt); + ret = fpga_mgr_write_sg(mgr, sgt); } else { struct sg_mapping_iter miter; -- cgit v1.2.3