From: Wu Hao <hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: atull-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mdf-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-fpga-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
luwei.kang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
yi.z.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
Xiao Guangrong
<guangrong.xiao-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Tim Whisonant
<tim.whisonant-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Enno Luebbers
<enno.luebbers-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Shiva Rao <shiva.rao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Christopher Rauer
<christopher.rauer-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH v2 10/22] fpga: intel: add feature device infrastructure
Date: Mon, 26 Jun 2017 09:52:06 +0800 [thread overview]
Message-ID: <1498441938-14046-11-git-send-email-hao.wu@intel.com> (raw)
In-Reply-To: <1498441938-14046-1-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
From: Xiao Guangrong <guangrong.xiao-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
This patch abstracts the common operations of the sub features, and defines
the feature_ops data structure, including init, uinit and ioctl function
pointers. And this patch adds some common helper functions for FME and AFU
drivers, e.g feature_dev_use_begin/end which are used to ensure exclusive
usage of the feature device file.
Signed-off-by: Tim Whisonant <tim.whisonant-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Enno Luebbers <enno.luebbers-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Shiva Rao <shiva.rao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Christopher Rauer <christopher.rauer-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kang Luwei <luwei.kang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Zhang Yi <yi.z.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Xiao Guangrong <guangrong.xiao-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Signed-off-by: Wu Hao <hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
v2: rebased
---
drivers/fpga/intel-feature-dev.c | 66 +++++++++++++++++++++++++++++++++++++
drivers/fpga/intel-feature-dev.h | 71 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 137 insertions(+)
diff --git a/drivers/fpga/intel-feature-dev.c b/drivers/fpga/intel-feature-dev.c
index 45788fe..833bfa9 100644
--- a/drivers/fpga/intel-feature-dev.c
+++ b/drivers/fpga/intel-feature-dev.c
@@ -51,6 +51,72 @@ int port_feature_num(void)
return PORT_FEATURE_ID_MAX;
}
+int fme_feature_to_resource_index(int feature_id)
+{
+ WARN_ON(feature_id >= FME_FEATURE_ID_MAX);
+ return feature_id;
+}
+
+void fpga_dev_feature_uinit(struct platform_device *pdev)
+{
+ struct feature *feature;
+ struct feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
+
+ fpga_dev_for_each_feature(pdata, feature)
+ if (feature->ops) {
+ feature->ops->uinit(pdev, feature);
+ feature->ops = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(fpga_dev_feature_uinit);
+
+static int
+feature_instance_init(struct platform_device *pdev,
+ struct feature_platform_data *pdata,
+ struct feature *feature, struct feature_driver *drv)
+{
+ int ret;
+
+ WARN_ON(!feature->ioaddr);
+
+ ret = drv->ops->init(pdev, feature);
+ if (ret)
+ return ret;
+
+ feature->ops = drv->ops;
+ return ret;
+}
+
+int fpga_dev_feature_init(struct platform_device *pdev,
+ struct feature_driver *feature_drvs)
+{
+ struct feature *feature;
+ struct feature_driver *drv = feature_drvs;
+ struct feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ int ret;
+
+ while (drv->ops) {
+ fpga_dev_for_each_feature(pdata, feature) {
+ /* skip the feature which is not initialized. */
+ if (!feature->name)
+ continue;
+
+ if (!strcmp(drv->name, feature->name)) {
+ ret = feature_instance_init(pdev, pdata,
+ feature, drv);
+ if (ret)
+ goto exit;
+ }
+ }
+ drv++;
+ }
+ return 0;
+exit:
+ fpga_dev_feature_uinit(pdev);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(fpga_dev_feature_init);
+
struct fpga_chardev_info {
const char *name;
dev_t devt;
diff --git a/drivers/fpga/intel-feature-dev.h b/drivers/fpga/intel-feature-dev.h
index 06b3fb6..635b857 100644
--- a/drivers/fpga/intel-feature-dev.h
+++ b/drivers/fpga/intel-feature-dev.h
@@ -221,12 +221,20 @@ struct feature_port_stp {
#pragma pack()
+struct feature_driver {
+ const char *name;
+ struct feature_ops *ops;
+};
+
struct feature {
const char *name;
int resource_index;
void __iomem *ioaddr;
+ struct feature_ops *ops;
};
+#define DEV_STATUS_IN_USE 0
+
struct feature_platform_data {
/* list the feature dev to cci_drvdata->port_dev_list. */
struct list_head node;
@@ -234,6 +242,9 @@ struct feature_platform_data {
struct cdev cdev;
struct platform_device *dev;
unsigned int disable_count; /* count for port disable */
+ unsigned long dev_status;
+
+ void *private; /* ptr to feature dev private data */
struct platform_device *(*fpga_for_each_port)(struct platform_device *,
void *, int (*match)(struct platform_device *, void *));
@@ -242,6 +253,38 @@ struct feature_platform_data {
struct feature features[0];
};
+static inline int feature_dev_use_begin(struct feature_platform_data *pdata)
+{
+ /* Test and set IN_USE flags to ensure file is exclusively used */
+ if (test_and_set_bit_lock(DEV_STATUS_IN_USE, &pdata->dev_status))
+ return -EBUSY;
+
+ return 0;
+}
+
+static inline void feature_dev_use_end(struct feature_platform_data *pdata)
+{
+ clear_bit_unlock(DEV_STATUS_IN_USE, &pdata->dev_status);
+}
+
+static inline void
+fpga_pdata_set_private(struct feature_platform_data *pdata, void *private)
+{
+ pdata->private = private;
+}
+
+static inline void *fpga_pdata_get_private(struct feature_platform_data *pdata)
+{
+ return pdata->private;
+}
+
+struct feature_ops {
+ int (*init)(struct platform_device *pdev, struct feature *feature);
+ void (*uinit)(struct platform_device *pdev, struct feature *feature);
+ long (*ioctl)(struct platform_device *pdev, struct feature *feature,
+ unsigned int cmd, unsigned long arg);
+};
+
enum fme_feature_id {
FME_FEATURE_ID_HEADER = 0x0,
FME_FEATURE_ID_THERMAL_MGMT = 0x1,
@@ -281,6 +324,10 @@ static inline int feature_platform_data_size(const int num)
struct feature_platform_data *
feature_platform_data_alloc_and_init(struct platform_device *dev, int num);
+void fpga_dev_feature_uinit(struct platform_device *pdev);
+int fpga_dev_feature_init(struct platform_device *pdev,
+ struct feature_driver *feature_drvs);
+
enum fpga_devt_type {
FPGA_DEVT_FME,
FPGA_DEVT_PORT,
@@ -350,6 +397,15 @@ static inline int fpga_port_reset(struct platform_device *pdev)
return ret;
}
+static inline
+struct platform_device *fpga_inode_to_feature_dev(struct inode *inode)
+{
+ struct feature_platform_data *pdata;
+
+ pdata = container_of(inode->i_cdev, struct feature_platform_data, cdev);
+ return pdata->dev;
+}
+
static inline void __iomem *
get_feature_ioaddr_by_index(struct device *dev, int index)
{
@@ -358,9 +414,24 @@ static inline int fpga_port_reset(struct platform_device *pdev)
return pdata->features[index].ioaddr;
}
+static inline bool is_feature_present(struct device *dev, int index)
+{
+ return !!get_feature_ioaddr_by_index(dev, index);
+}
+
static inline struct device *
fpga_feature_dev_to_pcidev(struct platform_device *dev)
{
return dev->dev.parent->parent;
}
+
+static inline struct device *
+fpga_pdata_to_pcidev(struct feature_platform_data *pdata)
+{
+ return fpga_feature_dev_to_pcidev(pdata->dev);
+}
+
+#define fpga_dev_for_each_feature(pdata, feature) \
+ for ((feature) = (pdata)->features; \
+ (feature) < (pdata)->features + (pdata)->num; (feature)++)
#endif
--
1.8.3.1
next prev parent reply other threads:[~2017-06-26 1:52 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-26 1:51 [PATCH v2 00/22] Intel FPGA Device Drivers Wu Hao
[not found] ` <1498441938-14046-1-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-06-26 1:51 ` [PATCH v2 01/22] docs: fpga: add a document for Intel FPGA driver overview Wu Hao
2017-07-12 14:51 ` Alan Tull
[not found] ` <CANk1AXTDVVRG05H9kwZujFYGGS=AjQ2cdfrBm=bRNz9S7p6R6w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-13 4:25 ` Wu Hao
2017-07-14 23:59 ` Luebbers, Enno
2017-07-17 20:14 ` Alan Tull
[not found] ` <CANk1AXTLhbczboA=wCYGUhnJyyYfvmUqUpk490sk34eh-MU5Ew-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-18 5:22 ` Greg KH
[not found] ` <20170718052228.GA10631-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-07-18 14:32 ` Alan Tull
2017-06-26 1:51 ` [PATCH v2 02/22] fpga: add FPGA device framework Wu Hao
2017-07-27 16:35 ` Alan Tull
[not found] ` <CANk1AXRoxz7nOY--UYfBtg-3kGFy0gqCz0cbF9mOvzU2+EdzpA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-27 19:10 ` Rob Herring
[not found] ` <CAL_JsqJfGJwDcXtpBs73TsSKTCwfAPywgyTPwzy1GQotJ7DTzw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-31 21:40 ` Alan Tull
[not found] ` <CANk1AXTsBQgX+0hYZA6mMhESApB-MkG9CETWExSPOpf7MXeKFw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-01 8:43 ` Wu Hao
2017-08-01 21:04 ` Alan Tull
2017-08-02 14:07 ` Wu Hao
2017-08-02 21:01 ` Alan Tull
2017-08-07 15:13 ` Alan Tull
2017-07-27 16:44 ` Alan Tull
[not found] ` <CANk1AXR-nSB-6TKpVyskbvfj_F2=jbSv48hpp+UXtKxkTseLqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-28 7:55 ` Wu Hao
2017-06-26 1:51 ` [PATCH v2 03/22] fpga: bridge: remove OF dependency for fpga-bridge Wu Hao
2017-08-02 21:21 ` Alan Tull
2017-09-25 16:34 ` Moritz Fischer
[not found] ` <1498441938-14046-4-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-09-21 19:11 ` Moritz Fischer
2017-09-21 19:50 ` Alan Tull
[not found] ` <CANk1AXRbXybjwq-ha=G6Z7nXwd8fNjPWP5awTz6=23KVXbd=kQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-22 2:15 ` Wu Hao
2017-09-23 1:53 ` Alan Tull
2017-06-26 1:52 ` [PATCH v2 04/22] fpga: mgr: add region_id to fpga_image_info Wu Hao
[not found] ` <1498441938-14046-5-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-07-26 18:33 ` Alan Tull
2017-07-27 5:14 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 09/22] fpga: intel: pcie: adds fpga_for_each_port callback for fme device Wu Hao
2017-08-17 21:31 ` Alan Tull
[not found] ` <CANk1AXRQfGViXn+vEErmN6N8LtOsX7Arh-VPPbDjKiEyGGvV-A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-18 7:03 ` Wu Hao
2017-06-26 1:52 ` Wu Hao [this message]
2017-06-26 1:52 ` [PATCH v2 12/22] fpga: intel: fme: add header sub feature support Wu Hao
2017-07-17 18:53 ` Alan Tull
2017-07-18 1:17 ` Wu, Hao
[not found] ` <BE8371DA886269458E0220A16DC1F8277E058300-0J0gbvR4kTg/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2017-07-18 14:33 ` Alan Tull
2017-06-26 1:52 ` [PATCH v2 14/22] fpga: intel: fme: add partial reconfiguration " Wu Hao
2017-06-26 1:52 ` [PATCH v2 16/22] fpga: intel: add fpga bridge platform driver for FME Wu Hao
[not found] ` <1498441938-14046-17-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-08-17 19:34 ` Alan Tull
2017-08-17 19:55 ` Moritz Fischer
2017-08-18 3:06 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 18/22] fpga: intel: add FPGA Accelerated Function Unit driver basic framework Wu Hao
[not found] ` <1498441938-14046-19-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-08-17 19:00 ` Alan Tull
[not found] ` <CANk1AXSN76qZD+h8iBeYGPEGwquvGms9VC2tXG7rf16NeNUoiw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-18 6:40 ` Wu Hao
2017-08-17 19:09 ` Moritz Fischer
[not found] ` <CAAtXAHca6R7rKOmFHD0eic1dv-NxfG3fBS+yRVFNYoX_M0eVbw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-18 6:42 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 19/22] fpga: intel: afu: add header sub feature support Wu Hao
2017-08-14 21:37 ` Alan Tull
[not found] ` <CANk1AXSb==KikMjw4PJ4Yx97vT5JxDkHR5k2Cb0cdrQFUOZqQw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-16 5:11 ` Wu, Hao
2017-08-17 21:41 ` Alan Tull
2017-06-26 1:52 ` [PATCH v2 20/22] fpga: intel: afu add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2017-08-17 19:07 ` Alan Tull
2017-08-17 19:12 ` Moritz Fischer
[not found] ` <CAAtXAHdyCNBRHdk-9L+AOT7g7BEsxBN-EkdhxO2-aSqdDovTHg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-18 3:20 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 21/22] fpga: intel: afu: add user afu sub feature support Wu Hao
2017-06-26 1:52 ` [PATCH v2 22/22] fpga: intel: afu: add FPGA_PORT_DMA_MAP/UNMAP ioctls support Wu Hao
2017-07-31 21:41 ` Alan Tull
[not found] ` <CANk1AXQ0kKnDOWo_BLA_r3P_rsmiZ1LQCVWqXtmXYmkUnzDtog-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-01 7:21 ` Wu Hao
2017-08-01 18:15 ` Moritz Fischer
[not found] ` <CAAtXAHfB906JNRzwzrx9kB4kMwcTz-201QQSr=486j8hrH7WMA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-02 7:30 ` Wu Hao
2017-07-28 13:28 ` [PATCH v2 00/22] Intel FPGA Device Drivers Alan Tull
2017-06-26 1:52 ` [PATCH v2 05/22] fpga: mgr: add status for fpga-mgr Wu Hao
[not found] ` <1498441938-14046-6-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-07-12 15:22 ` Alan Tull
[not found] ` <CANk1AXQ4-BWzhRjR+BTmnSae+4FeBamZyYbH1MMZWaAqeW_CEA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-13 3:11 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 06/22] fpga: intel: add FPGA PCIe device driver Wu Hao
2017-08-07 20:43 ` Alan Tull
[not found] ` <CANk1AXQ__fFCfv335ySGMxG=8UXReEk8V1=a-3pCw5S-v=sSRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-08-14 12:33 ` Wu, Hao
2017-06-26 1:52 ` [PATCH v2 07/22] fpga: intel: pcie: parse feature list and create platform device for features Wu Hao
2017-06-26 18:42 ` Moritz Fischer
2017-06-27 3:17 ` Wu Hao
[not found] ` <20170626184205.GA13190-R0KNJUYl863z/wjs7L+eiWPmTBeX6bocVpNB7YpNyf8@public.gmane.org>
2017-06-27 15:34 ` Alan Tull
[not found] ` <1498441938-14046-8-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-07-13 17:52 ` Alan Tull
[not found] ` <CANk1AXS-VftzKmmK4P3Anas+DQZ0ZPQ=7yVQt=QrNULPY7PaDA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-14 9:22 ` Wu Hao
2017-07-17 19:15 ` Alan Tull
2017-07-18 2:29 ` Wu, Hao
2017-09-20 21:24 ` Alan Tull
2017-09-21 19:58 ` Alan Tull
[not found] ` <CANk1AXTvHm-y0vUmCTPX47T9G1TJsatfwoC-bx-tPFRoJA9+AA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-22 7:33 ` Wu Hao
2017-09-22 7:28 ` Wu Hao
2017-09-27 20:27 ` Alan Tull
[not found] ` <CANk1AXQe2mrpqq-7uc8QvPPBYaMvQjBhbjLaee1XQ6L+kiCKTQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-28 9:32 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 08/22] fpga: intel: pcie: add chardev support for feature devices Wu Hao
2017-06-26 1:52 ` [PATCH v2 11/22] fpga: intel: add FPGA Management Engine driver basic framework Wu Hao
2017-06-26 1:52 ` [PATCH v2 13/22] fpga: intel: fme: add FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls support Wu Hao
2017-08-17 19:11 ` Alan Tull
2017-06-26 1:52 ` [PATCH v2 15/22] fpga: intel: add fpga manager platform driver for FME Wu Hao
2017-09-25 21:24 ` Moritz Fischer
[not found] ` <20170925212457.GB14795-KFgJe6S/L2nknyRNNOXSQ2IaLvZF3x2V0E9HWUfgJXw@public.gmane.org>
2017-09-27 1:18 ` Wu Hao
2017-09-27 18:54 ` Alan Tull
[not found] ` <CANk1AXTQLiR7ayLzsgU9TOePY2Zc01P-mMOy7n509S7+bcS-5A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-09-28 8:25 ` Wu Hao
2017-06-26 1:52 ` [PATCH v2 17/22] fpga: intel: add fpga region " Wu Hao
[not found] ` <1498441938-14046-18-git-send-email-hao.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-07-12 16:09 ` Alan Tull
[not found] ` <CANk1AXRioZsobi9k_VVcRypV+LrviPLjRejb_Og9VwKhCRth5g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-07-13 2:31 ` Wu Hao
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