[PATCH 15/17] usb: xhci-mtk: support to build xhci-mtk-hcd.ko

Chunfeng Yun
2021-03-05T09:04:36Z

Currently xhci-hcd.ko building depends on USB_XHCI_MTK, this
is not flexible for some cases. For example:
USB_XHCI_HCD is y, and USB_XHCI_MTK is m, then we can't
implement extended functions if only update xhci-mtk.ko
This patch is used to remove the dependence.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
drivers/usb/host/Makefile | 6 ++---
drivers/usb/host/xhci-mem.c | 2 +-
drivers/usb/host/xhci-mtk-sch.c | 48 +++++++++++++++++++++++----------
drivers/usb/host/xhci-mtk.c | 2 ++
drivers/usb/host/xhci-mtk.h | 33 +++--------------------
drivers/usb/host/xhci-ring.c | 1 -
drivers/usb/host/xhci.c | 30 +++++++++------------
drivers/usb/host/xhci.h | 8 ++++++
8 files changed, 64 insertions(+), 66 deletions(-)

diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 3e4d298d851f..171de4df50bd 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -19,9 +19,7 @@ ifneq ($(CONFIG_USB_XHCI_DBGCAP), )
xhci-hcd-y += xhci-dbgcap.o xhci-dbgtty.o
endif

-ifneq ($(CONFIG_USB_XHCI_MTK), )
- xhci-hcd-y += xhci-mtk-sch.o
-endif
+xhci-mtk-hcd-y := xhci-mtk.o xhci-mtk-sch.o

xhci-plat-hcd-y := xhci-plat.o
ifneq ($(CONFIG_USB_XHCI_MVEBU), )
@@ -73,7 +71,7 @@ obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
obj-$(CONFIG_USB_XHCI_PCI_RENESAS) += xhci-pci-renesas.o
obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
obj-$(CONFIG_USB_XHCI_HISTB) += xhci-histb.o
-obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk.o
+obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk-hcd.o
obj-$(CONFIG_USB_XHCI_TEGRA) += xhci-tegra.o
obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index f2c4ee7c4786..7eb8c07c8418 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -532,7 +532,7 @@ struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci,
return (struct xhci_ep_ctx *)
(ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params)));
}
-
+EXPORT_SYMBOL_GPL(xhci_get_ep_ctx);

/***************** Streams structures manipulation *************************/

diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c
index deb918490b71..4f6b86131820 100644
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@@ -691,25 +691,22 @@ int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk)

return 0;
}
-EXPORT_SYMBOL_GPL(xhci_mtk_sch_init);

void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk)
{
kfree(mtk->sch_array);
}
-EXPORT_SYMBOL_GPL(xhci_mtk_sch_exit);

-int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep)
+static int add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
{
struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
- struct xhci_hcd *xhci;
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct xhci_ep_ctx *ep_ctx;
struct xhci_virt_device *virt_dev;
struct mu3h_sch_ep_info *sch_ep;
unsigned int ep_index;

- xhci = hcd_to_xhci(hcd);
virt_dev = xhci->devs[udev->slot_id];
ep_index = xhci_get_endpoint_index(&ep->desc);
ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
@@ -741,18 +738,16 @@ int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,

return 0;
}
-EXPORT_SYMBOL_GPL(xhci_mtk_add_ep_quirk);

-void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep)
+static void drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
{
struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
- struct xhci_hcd *xhci;
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct xhci_virt_device *virt_dev;
struct mu3h_sch_bw_info *sch_bw;
struct mu3h_sch_ep_info *sch_ep, *tmp;

- xhci = hcd_to_xhci(hcd);
virt_dev = xhci->devs[udev->slot_id];

xhci_dbg(xhci, "%s() type:%d, speed:%d, mpks:%d, dir:%d, ep:%p\n",
@@ -772,7 +767,6 @@ void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
}
}
}
-EXPORT_SYMBOL_GPL(xhci_mtk_drop_ep_quirk);

int xhci_mtk_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
{
@@ -818,7 +812,6 @@ int xhci_mtk_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)

return xhci_check_bandwidth(hcd, udev);
}
-EXPORT_SYMBOL_GPL(xhci_mtk_check_bandwidth);

void xhci_mtk_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
{
@@ -836,4 +829,31 @@ void xhci_mtk_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)

xhci_reset_bandwidth(hcd, udev);
}
-EXPORT_SYMBOL_GPL(xhci_mtk_reset_bandwidth);
+
+int xhci_mtk_add_ep(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
+{
+ int ret;
+
+ ret = xhci_add_endpoint(hcd, udev, ep);
+ if (ret)
+ return ret;
+
+ if (ep->hcpriv)
+ ret = add_ep_quirk(hcd, udev, ep);
+
+ return ret;
+}
+
+int xhci_mtk_drop_ep(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
+{
+ int ret;
+
+ ret = xhci_drop_endpoint(hcd, udev, ep);
+ if (ret)
+ return ret;
+
+ drop_ep_quirk(hcd, udev, ep);
+ return 0;
+}
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index fb4e56f6a6c3..57bcfdfa0465 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -417,6 +417,8 @@ static int xhci_mtk_setup(struct usb_hcd *hcd)

static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = {
.reset = xhci_mtk_setup,
+ .add_endpoint = xhci_mtk_add_ep,
+ .drop_endpoint = xhci_mtk_drop_ep,
.check_bandwidth = xhci_mtk_check_bandwidth,
.reset_bandwidth = xhci_mtk_reset_bandwidth,
};
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
index d25bf9e49136..621ec1a85009 100644
--- a/drivers/usb/host/xhci-mtk.h
+++ b/drivers/usb/host/xhci-mtk.h
@@ -161,38 +161,13 @@ static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd)
return dev_get_drvdata(hcd->self.controller);
}

-#if IS_ENABLED(CONFIG_USB_XHCI_MTK)
int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk);
void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk);
-int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep);
-void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep);
+int xhci_mtk_add_ep(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
+int xhci_mtk_drop_ep(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
int xhci_mtk_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
void xhci_mtk_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);

-#else
-static inline int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd,
- struct usb_device *udev, struct usb_host_endpoint *ep)
-{
- return 0;
-}
-
-static inline void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd,
- struct usb_device *udev, struct usb_host_endpoint *ep)
-{
-}
-
-static inline int xhci_mtk_check_bandwidth(struct usb_hcd *hcd,
- struct usb_device *udev)
-{
- return 0;
-}
-
-static inline void xhci_mtk_reset_bandwidth(struct usb_hcd *hcd,
- struct usb_device *udev)
-{
-}
-#endif
-
#endif /* _XHCI_MTK_H_ */
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 5e548a1c93ab..c8a880111435 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -57,7 +57,6 @@
#include <linux/dma-mapping.h>
#include "xhci.h"
#include "xhci-trace.h"
-#include "xhci-mtk.h"

static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
u32 field1, u32 field2,
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index bd27bd670104..13baeda927f0 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -20,7 +20,6 @@

#include "xhci.h"
#include "xhci-trace.h"
-#include "xhci-mtk.h"
#include "xhci-debugfs.h"
#include "xhci-dbgcap.h"

@@ -1420,6 +1419,7 @@ unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc)
(usb_endpoint_dir_in(desc) ? 1 : 0) - 1;
return index;
}
+EXPORT_SYMBOL_GPL(xhci_get_endpoint_index);

/* The reverse operation to xhci_get_endpoint_index. Calculate the USB endpoint
* address from the XHCI endpoint index.
@@ -1852,8 +1852,8 @@ static int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
* disabled, so there's no need for mutual exclusion to protect
* the xhci->devs[slot_id] structure.
*/
-static int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep)
+int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
{
struct xhci_hcd *xhci;
struct xhci_container_ctx *in_ctx, *out_ctx;
@@ -1913,9 +1913,6 @@ static int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,

xhci_endpoint_zero(xhci, xhci->devs[udev->slot_id], ep);

- if (xhci->quirks & XHCI_MTK_HOST)
- xhci_mtk_drop_ep_quirk(hcd, udev, ep);
-
xhci_dbg(xhci, "drop ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x\n",
(unsigned int) ep->desc.bEndpointAddress,
udev->slot_id,
@@ -1923,6 +1920,7 @@ static int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
(unsigned int) new_add_flags);
return 0;
}
+EXPORT_SYMBOL_GPL(xhci_drop_endpoint);

/* Add an endpoint to a new possible bandwidth configuration for this device.
* Only one call to this function is allowed per endpoint before
@@ -1937,8 +1935,8 @@ static int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
* configuration or alt setting is installed in the device, so there's no need
* for mutual exclusion to protect the xhci->devs[slot_id] structure.
*/
-static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
- struct usb_host_endpoint *ep)
+int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep)
{
struct xhci_hcd *xhci;
struct xhci_container_ctx *in_ctx;
@@ -2012,15 +2010,6 @@ static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
return -ENOMEM;
}

- if (xhci->quirks & XHCI_MTK_HOST) {
- ret = xhci_mtk_add_ep_quirk(hcd, udev, ep);
- if (ret < 0) {
- xhci_ring_free(xhci, virt_dev->eps[ep_index].new_ring);
- virt_dev->eps[ep_index].new_ring = NULL;
- return ret;
- }
- }
-
ctrl_ctx->add_flags |= cpu_to_le32(added_ctxs);
new_add_flags = le32_to_cpu(ctrl_ctx->add_flags);

@@ -2045,6 +2034,7 @@ static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
(unsigned int) new_add_flags);
return 0;
}
+EXPORT_SYMBOL_GPL(xhci_add_endpoint);

static void xhci_zero_in_ctx(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev)
{
@@ -3078,6 +3068,7 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)

return ret;
}
+EXPORT_SYMBOL_GPL(xhci_check_bandwidth);

void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
{
@@ -3102,6 +3093,7 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
}
xhci_zero_in_ctx(xhci, virt_dev);
}
+EXPORT_SYMBOL_GPL(xhci_reset_bandwidth);

static void xhci_setup_input_ctx_for_config_ep(struct xhci_hcd *xhci,
struct xhci_container_ctx *in_ctx,
@@ -5428,6 +5420,10 @@ void xhci_init_driver(struct hc_driver *drv,
drv->reset = over->reset;
if (over->start)
drv->start = over->start;
+ if (over->add_endpoint)
+ drv->add_endpoint = over->add_endpoint;
+ if (over->drop_endpoint)
+ drv->drop_endpoint = over->drop_endpoint;
if (over->check_bandwidth)
drv->check_bandwidth = over->check_bandwidth;
if (over->reset_bandwidth)
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index d41de5dc0452..5053c1adda1e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1928,6 +1928,10 @@ struct xhci_driver_overrides {
size_t extra_priv_size;
int (*reset)(struct usb_hcd *hcd);
int (*start)(struct usb_hcd *hcd);
+ int (*add_endpoint)(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
+ int (*drop_endpoint)(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
int (*check_bandwidth)(struct usb_hcd *, struct usb_device *);
void (*reset_bandwidth)(struct usb_hcd *, struct usb_device *);
};
@@ -2080,6 +2084,10 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
void xhci_shutdown(struct usb_hcd *hcd);
void xhci_init_driver(struct hc_driver *drv,
const struct xhci_driver_overrides *over);
+int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
+int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
+ struct usb_host_endpoint *ep);
int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id);
--
2.18.0