diff options
| -rw-r--r-- | boot/bootmeth_android.c | 13 | ||||
| -rw-r--r-- | cmd/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/dfu/dfu.c | 16 | ||||
| -rw-r--r-- | drivers/dfu/dfu_mmc.c | 3 | ||||
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/usb/gadget/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/Makefile | 8 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/common.c | 478 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/common.h | 328 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/fifo.c | 1067 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/fifo.h | 114 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/mod.c | 345 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/mod.h | 161 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/mod_gadget.c | 1136 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/pipe.c | 849 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/pipe.h | 114 | ||||
| -rw-r--r-- | drivers/usb/gadget/rcar/renesas_usb.h | 125 | ||||
| -rw-r--r-- | include/dfu.h | 1 | ||||
| -rw-r--r-- | include/env_callback.h | 7 |
19 files changed, 4774 insertions, 4 deletions
diff --git a/boot/bootmeth_android.c b/boot/bootmeth_android.c index 6e8d3e615db..19b1f2c377b 100644 --- a/boot/bootmeth_android.c +++ b/boot/bootmeth_android.c @@ -22,6 +22,7 @@ #include <malloc.h> #include <mapmem.h> #include <part.h> +#include <version.h> #include "bootmeth_android.h" #define BCB_FIELD_COMMAND_SZ 32 @@ -171,6 +172,12 @@ static int configure_serialno(struct bootflow *bflow) return bootflow_cmdline_set_arg(bflow, "androidboot.serialno", serialno, false); } +static int configure_bootloader_version(struct bootflow *bflow) +{ + return bootflow_cmdline_set_arg(bflow, "androidboot.bootloader", + PLAIN_VERSION, false); +} + static int android_read_bootflow(struct udevice *dev, struct bootflow *bflow) { struct blk_desc *desc = dev_get_uclass_plat(bflow->blk); @@ -264,8 +271,12 @@ static int android_read_bootflow(struct udevice *dev, struct bootflow *bflow) goto free_priv; } - /* Ignoring return code: setting serial number is not mandatory for booting */ + /* + * Ignoring return code for the following configurations: + * these are not mandatory for booting. + */ configure_serialno(bflow); + configure_bootloader_version(bflow); if (priv->boot_mode == ANDROID_BOOT_MODE_NORMAL) { ret = bootflow_cmdline_set_arg(bflow, "androidboot.force_normal_boot", diff --git a/cmd/Kconfig b/cmd/Kconfig index 5ef3c8a8748..d50f6396fc7 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1685,9 +1685,8 @@ config CMD_ROCKUSB config CMD_USB_MASS_STORAGE bool "UMS usb mass storage" - depends on USB_GADGET_DOWNLOAD + depends on BLK && USB_GADGET_DOWNLOAD select USB_FUNCTION_MASS_STORAGE - depends on BLK && USB_GADGET help Enables the command "ums" and the USB mass storage support to the export a block device: U-Boot, the USB device, acts as a simple diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 540d48fab77..7a4d7ba2a7f 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -27,6 +27,21 @@ static unsigned long dfu_timeout = 0; #endif bool dfu_reinit_needed = false; +bool dfu_alt_info_changed = false; + +static int on_dfu_alt_info(const char *name, const char *value, enum env_op op, + int flags) +{ + switch (op) { + case env_op_create: + case env_op_overwrite: + case env_op_delete: + dfu_alt_info_changed = true; + break; + } + return 0; +} +U_BOOT_ENV_CALLBACK(dfu_alt_info, on_dfu_alt_info); /* * The purpose of the dfu_flush_callback() function is to @@ -152,6 +167,7 @@ int dfu_init_env_entities(char *interface, char *devstr) int ret = 0; dfu_reinit_needed = false; + dfu_alt_info_changed = false; #ifdef CONFIG_SET_DFU_ALT_INFO set_dfu_alt_info(interface, devstr); diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 8f7ecfa8fc7..c19eb919388 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -232,7 +232,8 @@ int dfu_flush_medium_mmc(struct dfu_entity *dfu) break; case DFU_SCRIPT: /* script may have changed the dfu_alt_info */ - dfu_reinit_needed = true; + if (dfu_alt_info_changed) + dfu_reinit_needed = true; break; case DFU_RAW_ADDR: case DFU_SKIP: diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index f20a16e3e7d..1694ad03183 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -114,6 +114,15 @@ config USB_GADGET_DWC2_OTG driver to operate in Peripheral mode. This option requires USB_GADGET to be enabled. +config USB_RENESAS_USBHS + bool "Renesas RCar USB2.0 HS controller (gadget mode)" + select USB_GADGET_DUALSPEED + help + The Renesas Rcar USB 2.0 high-speed gadget controller + integrated into Salvator and Kingfisher boards. Select this + option if you want the driver to operate in Peripheral mode. + This option requires USB_GADGET to be enabled. + if USB_GADGET_DWC2_OTG config USB_GADGET_DWC2_OTG_PHY diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 6abcce0d9c7..da76b6524de 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_USB_GADGET_BCM_UDC_OTG_PHY) += bcm_udc_otg_phy.o obj-$(CONFIG_USB_GADGET_DWC2_OTG) += dwc2_udc_otg.o obj-$(CONFIG_USB_GADGET_DWC2_OTG_PHY) += dwc2_udc_otg_phy.o obj-$(CONFIG_USB_GADGET_MAX3420) += max3420_udc.o +obj-$(CONFIG_USB_RENESAS_USBHS) += rcar/ ifndef CONFIG_SPL_BUILD obj-$(CONFIG_USB_GADGET_DOWNLOAD) += g_dnl.o obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o diff --git a/drivers/usb/gadget/rcar/Makefile b/drivers/usb/gadget/rcar/Makefile new file mode 100644 index 00000000000..676f39c8e24 --- /dev/null +++ b/drivers/usb/gadget/rcar/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_USB_RENESAS_USBHS) += \ + common.o \ + fifo.o \ + mod.o \ + mod_gadget.o \ + pipe.o diff --git a/drivers/usb/gadget/rcar/common.c b/drivers/usb/gadget/rcar/common.c new file mode 100644 index 00000000000..2ba022a3f2c --- /dev/null +++ b/drivers/usb/gadget/rcar/common.c @@ -0,0 +1,478 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ + +#include <asm/io.h> +#include <clk.h> +#include <dm.h> +#include <errno.h> +#include <generic-phy.h> +#include <linux/err.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <usb.h> + +#include "common.h" + +/* + * image of renesas_usbhs + * + * ex) gadget case + + * mod.c + * mod_gadget.c + * mod_host.c pipe.c fifo.c + * + * +-------+ +-----------+ + * | pipe0 |------>| fifo pio | + * +------------+ +-------+ +-----------+ + * | mod_gadget |=====> | pipe1 |--+ + * +------------+ +-------+ | +-----------+ + * | pipe2 | | +-| fifo dma0 | + * +------------+ +-------+ | | +-----------+ + * | mod_host | | pipe3 |<-|--+ + * +------------+ +-------+ | +-----------+ + * | .... | +--->| fifo dma1 | + * | .... | +-----------+ + */ + +/* + * common functions + */ +u16 usbhs_read(struct usbhs_priv *priv, u32 reg) +{ + return ioread16(priv->base + reg); +} + +void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data) +{ + iowrite16(data, priv->base + reg); +} + +void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data) +{ + u16 val = usbhs_read(priv, reg); + + val &= ~mask; + val |= data & mask; + + usbhs_write(priv, reg, val); +} + +/* + * syscfg functions + */ +static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable) +{ + usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0); +} + +void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable) +{ + u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; + u16 val = DCFM | DRPD | HSE | USBE; + + /* + * if enable + * + * - select Host mode + * - D+ Line/D- Line Pull-down + */ + usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); +} + +void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable) +{ + u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; + u16 val = HSE | USBE; + + /* + * if enable + * + * - select Function mode + * - D+ Line Pull-up is disabled + * When D+ Line Pull-up is enabled, + * calling usbhs_sys_function_pullup(,1) + */ + usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); +} + +void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable) +{ + usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0); +} + +void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode) +{ + usbhs_write(priv, TESTMODE, mode); +} + +/* + * frame functions + */ +int usbhs_frame_get_num(struct usbhs_priv *priv) +{ + return usbhs_read(priv, FRMNUM) & FRNM_MASK; +} + +/* + * usb request functions + */ +void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) +{ + u16 val; + + val = usbhs_read(priv, USBREQ); + req->bRequest = (val >> 8) & 0xFF; + req->bRequestType = (val >> 0) & 0xFF; + + req->wValue = cpu_to_le16(usbhs_read(priv, USBVAL)); + req->wIndex = cpu_to_le16(usbhs_read(priv, USBINDX)); + req->wLength = cpu_to_le16(usbhs_read(priv, USBLENG)); +} + +void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) +{ + usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType); + usbhs_write(priv, USBVAL, le16_to_cpu(req->wValue)); + usbhs_write(priv, USBINDX, le16_to_cpu(req->wIndex)); + usbhs_write(priv, USBLENG, le16_to_cpu(req->wLength)); + + usbhs_bset(priv, DCPCTR, SUREQ, SUREQ); +} + +/* + * bus/vbus functions + */ +void usbhs_bus_send_sof_enable(struct usbhs_priv *priv) +{ + u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT); + + if (status != USBRST) { + struct device *dev = usbhs_priv_to_dev(priv); + dev_err(dev, "usbhs should be reset\n"); + } + + usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT); +} + +void usbhs_bus_send_reset(struct usbhs_priv *priv) +{ + usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST); +} + +int usbhs_bus_get_speed(struct usbhs_priv *priv) +{ + u16 dvstctr = usbhs_read(priv, DVSTCTR); + + switch (RHST & dvstctr) { + case RHST_LOW_SPEED: + return USB_SPEED_LOW; + case RHST_FULL_SPEED: + return USB_SPEED_FULL; + case RHST_HIGH_SPEED: + return USB_SPEED_HIGH; + } + + return USB_SPEED_UNKNOWN; +} + +static void usbhsc_bus_init(struct usbhs_priv *priv) +{ + usbhs_write(priv, DVSTCTR, 0); +} + +/* + * device configuration + */ +int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, + u16 upphub, u16 hubport, u16 speed) +{ + struct device *dev = usbhs_priv_to_dev(priv); + u16 usbspd = 0; + u32 reg = DEVADD0 + (2 * devnum); + + if (devnum > 10) { + dev_err(dev, "cannot set speed to unknown device %d\n", devnum); + return -EIO; + } + + if (upphub > 0xA) { + dev_err(dev, "unsupported hub number %d\n", upphub); + return -EIO; + } + + switch (speed) { + case USB_SPEED_LOW: + usbspd = USBSPD_SPEED_LOW; + break; + case USB_SPEED_FULL: + usbspd = USBSPD_SPEED_FULL; + break; + case USB_SPEED_HIGH: + usbspd = USBSPD_SPEED_HIGH; + break; + default: + dev_err(dev, "unsupported speed %d\n", speed); + return -EIO; + } + + usbhs_write(priv, reg, UPPHUB(upphub) | + HUBPORT(hubport)| + USBSPD(usbspd)); + + return 0; +} + +/* + * interrupt functions + */ +void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit) +{ + u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0); + + usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask); +} + +/* + * local functions + */ +static void usbhsc_set_buswait(struct usbhs_priv *priv) +{ + int wait = usbhs_get_dparam(priv, buswait_bwait); + + /* set bus wait if platform have */ + if (wait) + usbhs_bset(priv, BUSWAIT, 0x000F, wait); +} + +/* + * platform default param + */ + +/* commonly used on newer SH-Mobile and R-Car SoCs */ +static struct renesas_usbhs_driver_pipe_config usbhsc_new_pipe[] = { + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x28, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x58, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x68, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x78, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x88, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x98, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xa8, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xb8, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xc8, true), + RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xd8, true), +}; + +#define LPSTS 0x102 +#define LPSTS_SUSPM BIT(14) + +#define UGCTRL2 0x184 +#define UGCTRL2_RESERVED_3 BIT(0) +#define UGCTRL2_USB0SEL_EHCI 0x10 +#define UGCTRL2_USB0SEL_HSUSB 0x20 +#define UGCTRL2_USB0SEL_OTG 0x30 +#define UGCTRL2_USB0SEL_MASK 0x30 +#define UGCTRL2_VBUSSEL BIT(10) + +struct usbhs_priv_otg_data { + void __iomem *base; + void __iomem *phybase; + + struct platform_device usbhs_dev; + struct usbhs_priv usbhs_priv; + + struct phy phy; +}; + +static int usbhs_rcar3_power_ctrl(struct usbhs_priv *priv, bool enable) +{ + if (enable) { + writel(UGCTRL2_USB0SEL_OTG | UGCTRL2_VBUSSEL | UGCTRL2_RESERVED_3, + priv->base + UGCTRL2); + + usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); + /* The controller on R-Car Gen3 needs to wait up to 90 usec */ + udelay(90); + + usbhs_sys_clock_ctrl(priv, enable); + } else { + usbhs_sys_clock_ctrl(priv, enable); + + usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); + } + + return 0; +} + +void usbhsc_hotplug(struct usbhs_priv *priv) +{ + int ret; + + ret = usbhs_mod_change(priv, USBHS_GADGET); + if (ret < 0) + return; + + usbhs_rcar3_power_ctrl(priv, true); + + /* bus init */ + usbhsc_set_buswait(priv); + usbhsc_bus_init(priv); + + /* module start */ + usbhs_mod_call(priv, start, priv); +} + +#define USB2_OBINTSTA 0x604 +#define USB2_OBINT_SESSVLDCHG BIT(12) +#define USB2_OBINT_IDDIGCHG BIT(11) + +static int usbhs_udc_otg_gadget_handle_interrupts(struct udevice *dev) +{ + struct usbhs_priv_otg_data *priv = dev_get_priv(dev); + const u32 status = readl(priv->phybase + USB2_OBINTSTA); + + /* We don't have a good way to forward IRQ to PHY yet */ + if (status & (USB2_OBINT_SESSVLDCHG | USB2_OBINT_IDDIGCHG)) { + writel(USB2_OBINT_SESSVLDCHG | USB2_OBINT_IDDIGCHG, + priv->phybase + USB2_OBINTSTA); + generic_phy_set_mode(&priv->phy, PHY_MODE_USB_OTG, 0); + } + + usbhs_interrupt(0, &priv->usbhs_priv); + + return 0; +} + +static int usbhs_probe(struct usbhs_priv *priv) +{ + int ret; + + priv->dparam.type = USBHS_TYPE_RCAR_GEN3; + priv->dparam.pio_dma_border = 64; + priv->dparam.pipe_configs = usbhsc_new_pipe; + priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe); + + /* call pipe and module init */ + ret = usbhs_pipe_probe(priv); + if (ret < 0) + return ret; + + ret = usbhs_fifo_probe(priv); + if (ret < 0) + goto probe_end_pipe_exit; + + ret = usbhs_mod_probe(priv); + if (ret < 0) + goto probe_end_fifo_exit; + + usbhs_sys_clock_ctrl(priv, 0); + + usbhs_rcar3_power_ctrl(priv, true); + usbhs_mod_autonomy_mode(priv); + usbhsc_hotplug(priv); + + return ret; + +probe_end_fifo_exit: + usbhs_fifo_remove(priv); +probe_end_pipe_exit: + usbhs_pipe_remove(priv); + return ret; +} + +static int usbhs_udc_otg_probe(struct udevice *dev) +{ + struct usbhs_priv_otg_data *priv = dev_get_priv(dev); + struct usb_gadget *gadget; + struct clk_bulk clk_bulk; + int ret = -EINVAL; + + priv->base = dev_read_addr_ptr(dev); + if (!priv->base) + return -EINVAL; + + ret = clk_get_bulk(dev, &clk_bulk); + if (ret) + return ret; + + ret = clk_enable_bulk(&clk_bulk); + if (ret) + return ret; + + clrsetbits_le32(priv->base + UGCTRL2, UGCTRL2_USB0SEL_MASK, UGCTRL2_USB0SEL_EHCI); + clrsetbits_le16(priv->base + LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); + + ret = generic_setup_phy(dev, &priv->phy, 0, PHY_MODE_USB_OTG, 1); + if (ret) + goto err_clk; + + priv->phybase = dev_read_addr_ptr(priv->phy.dev); + + priv->usbhs_priv.pdev = &priv->usbhs_dev; + priv->usbhs_priv.base = priv->base; + priv->usbhs_dev.dev.driver_data = &priv->usbhs_priv; + ret = usbhs_probe(&priv->usbhs_priv); + if (ret < 0) + goto err_phy; + + gadget = usbhsg_get_gadget(&priv->usbhs_priv); + gadget->is_dualspeed = 1; + gadget->is_otg = 0; + gadget->is_a_peripheral = 0; + gadget->b_hnp_enable = 0; + gadget->a_hnp_support = 0; + gadget->a_alt_hnp_support = 0; + + return usb_add_gadget_udc((struct device *)dev, gadget); + +err_phy: + generic_shutdown_phy(&priv->phy); +err_clk: + clk_disable_bulk(&clk_bulk); + return ret; +} + +static int usbhs_udc_otg_remove(struct udevice *dev) +{ + struct usbhs_priv_otg_data *priv = dev_get_priv(dev); + + usbhs_rcar3_power_ctrl(&priv->usbhs_priv, false); + usbhs_mod_remove(&priv->usbhs_priv); + usbhs_fifo_remove(&priv->usbhs_priv); + usbhs_pipe_remove(&priv->usbhs_priv); + + generic_shutdown_phy(&priv->phy); + + return dm_scan_fdt_dev(dev); +} + +static const struct udevice_id usbhs_udc_otg_ids[] = { + { .compatible = "renesas,rcar-gen3-usbhs" }, + {}, +}; + +static const struct usb_gadget_generic_ops usbhs_udc_otg_ops = { + .handle_interrupts = usbhs_udc_otg_gadget_handle_interrupts, +}; + +U_BOOT_DRIVER(usbhs_udc_otg) = { + .name = "usbhs-udc-otg", + .id = UCLASS_USB_GADGET_GENERIC, + .ops = &usbhs_udc_otg_ops, + .of_match = usbhs_udc_otg_ids, + .probe = usbhs_udc_otg_probe, + .remove = usbhs_udc_otg_remove, + .priv_auto = sizeof(struct usbhs_priv_otg_data), +}; diff --git a/drivers/usb/gadget/rcar/common.h b/drivers/usb/gadget/rcar/common.h new file mode 100644 index 00000000000..544cfd77cdf --- /dev/null +++ b/drivers/usb/gadget/rcar/common.h @@ -0,0 +1,328 @@ +/* SPDX-License-Identifier: GPL-1.0+ */ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#ifndef RENESAS_USB_DRIVER_H +#define RENESAS_USB_DRIVER_H + +#include <dm/device.h> +#include <dm/device_compat.h> +#include <linux/bug.h> +#include <linux/delay.h> +#include <linux/io.h> +#include "renesas_usb.h" + +struct usbhs_priv; + +#include "mod.h" +#include "pipe.h" + +/* + * + * register define + * + */ +#define SYSCFG 0x0000 +#define BUSWAIT 0x0002 +#define DVSTCTR 0x0008 +#define TESTMODE 0x000C +#define CFIFO 0x0014 +#define CFIFOSEL 0x0020 +#define CFIFOCTR 0x0022 +#define D0FIFO 0x0100 +#define D0FIFOSEL 0x0028 +#define D0FIFOCTR 0x002A +#define D1FIFO 0x0120 +#define D1FIFOSEL 0x002C +#define D1FIFOCTR 0x002E +#define INTENB0 0x0030 +#define INTENB1 0x0032 +#define BRDYENB 0x0036 +#define NRDYENB 0x0038 +#define BEMPENB 0x003A +#define INTSTS0 0x0040 +#define INTSTS1 0x0042 +#define BRDYSTS 0x0046 +#define NRDYSTS 0x0048 +#define BEMPSTS 0x004A +#define FRMNUM 0x004C +#define USBREQ 0x0054 /* USB request type register */ +#define USBVAL 0x0056 /* USB request value register */ +#define USBINDX 0x0058 /* USB request index register */ +#define USBLENG 0x005A /* USB request length register */ +#define DCPCFG 0x005C +#define DCPMAXP 0x005E +#define DCPCTR 0x0060 +#define PIPESEL 0x0064 +#define PIPECFG 0x0068 +#define PIPEBUF 0x006A +#define PIPEMAXP 0x006C +#define PIPEPERI 0x006E +#define PIPEnCTR 0x0070 +#define PIPE1TRE 0x0090 +#define PIPE1TRN 0x0092 +#define PIPE2TRE 0x0094 +#define PIPE2TRN 0x0096 +#define PIPE3TRE 0x0098 +#define PIPE3TRN 0x009A +#define PIPE4TRE 0x009C +#define PIPE4TRN 0x009E +#define PIPE5TRE 0x00A0 +#define PIPE5TRN 0x00A2 +#define PIPEBTRE 0x00A4 +#define PIPEBTRN 0x00A6 +#define PIPECTRE 0x00A8 +#define PIPECTRN 0x00AA +#define PIPEDTRE 0x00AC +#define PIPEDTRN 0x00AE +#define PIPEETRE 0x00B0 +#define PIPEETRN 0x00B2 +#define PIPEFTRE 0x00B4 +#define PIPEFTRN 0x00B6 +#define PIPE9TRE 0x00B8 +#define PIPE9TRN 0x00BA +#define PIPEATRE 0x00BC +#define PIPEATRN 0x00BE +#define DEVADD0 0x00D0 /* Device address n configuration */ +#define DEVADD1 0x00D2 +#define DEVADD2 0x00D4 +#define DEVADD3 0x00D6 +#define DEVADD4 0x00D8 +#define DEVADD5 0x00DA +#define DEVADD6 0x00DC +#define DEVADD7 0x00DE +#define DEVADD8 0x00E0 +#define DEVADD9 0x00E2 +#define DEVADDA 0x00E4 +#define D2FIFOSEL 0x00F0 /* for R-Car Gen2 */ +#define D2FIFOCTR 0x00F2 /* for R-Car Gen2 */ +#define D3FIFOSEL 0x00F4 /* for R-Car Gen2 */ +#define D3FIFOCTR 0x00F6 /* for R-Car Gen2 */ +#define SUSPMODE 0x0102 /* for RZ/A */ + +/* SYSCFG */ +#define SCKE (1 << 10) /* USB Module Clock Enable */ +#define CNEN (1 << 8) /* Single-ended receiver operation Enable */ +#define HSE (1 << 7) /* High-Speed Operation Enable */ +#define DCFM (1 << 6) /* Controller Function Select */ +#define DRPD (1 << 5) /* D+ Line/D- Line Resistance Control */ +#define DPRPU (1 << 4) /* D+ Line Resistance Control */ +#define USBE (1 << 0) /* USB Module Operation Enable */ +#define UCKSEL (1 << 2) /* Clock Select for RZ/A1 */ +#define UPLLE (1 << 1) /* USB PLL Enable for RZ/A1 */ + +/* DVSTCTR */ +#define EXTLP (1 << 10) /* Controls the EXTLP pin output state */ +#define PWEN (1 << 9) /* Controls the PWEN pin output state */ +#define USBRST (1 << 6) /* Bus Reset Output */ +#define UACT (1 << 4) /* USB Bus Enable */ +#define RHST (0x7) /* Reset Handshake */ +#define RHST_LOW_SPEED 1 /* Low-speed connection */ +#define RHST_FULL_SPEED 2 /* Full-speed connection */ +#define RHST_HIGH_SPEED 3 /* High-speed connection */ + +/* CFIFOSEL */ +#define DREQE (1 << 12) /* DMA Transfer Request Enable */ +#define MBW_32 (0x2 << 10) /* CFIFO Port Access Bit Width */ + +/* CFIFOCTR */ +#define BVAL (1 << 15) /* Buffer Memory Enable Flag */ +#define BCLR (1 << 14) /* CPU buffer clear */ +#define FRDY (1 << 13) /* FIFO Port Ready */ +#define DTLN_MASK (0x0FFF) /* Receive Data Length */ + +/* INTENB0 */ +#define VBSE (1 << 15) /* Enable IRQ VBUS_0 and VBUSIN_0 */ +#define RSME (1 << 14) /* Enable IRQ Resume */ +#define SOFE (1 << 13) /* Enable IRQ Frame Number Update */ +#define DVSE (1 << 12) /* Enable IRQ Device State Transition */ +#define CTRE (1 << 11) /* Enable IRQ Control Stage Transition */ +#define BEMPE (1 << 10) /* Enable IRQ Buffer Empty */ +#define NRDYE (1 << 9) /* Enable IRQ Buffer Not Ready Response */ +#define BRDYE (1 << 8) /* Enable IRQ Buffer Ready */ + +/* INTENB1 */ +#define BCHGE (1 << 14) /* USB Bus Change Interrupt Enable */ +#define DTCHE (1 << 12) /* Disconnection Detect Interrupt Enable */ +#define ATTCHE (1 << 11) /* Connection Detect Interrupt Enable */ +#define EOFERRE (1 << 6) /* EOF Error Detect Interrupt Enable */ +#define SIGNE (1 << 5) /* Setup Transaction Error Interrupt Enable */ +#define SACKE (1 << 4) /* Setup Transaction ACK Interrupt Enable */ + +/* INTSTS0 */ +#define VBINT (1 << 15) /* VBUS0_0 and VBUS1_0 Interrupt Status */ +#define DVST (1 << 12) /* Device State Transition Interrupt Status */ +#define CTRT (1 << 11) /* Control Stage Interrupt Status */ +#define BEMP (1 << 10) /* Buffer Empty Interrupt Status */ +#define BRDY (1 << 8) /* Buffer Ready Interrupt Status */ +#define VBSTS (1 << 7) /* VBUS_0 and VBUSIN_0 Input Status */ +#define VALID (1 << 3) /* USB Request Receive */ + +#define DVSQ_MASK (0x7 << 4) /* Device State */ +#define POWER_STATE (0 << 4) +#define DEFAULT_STATE (1 << 4) +#define ADDRESS_STATE (2 << 4) +#define CONFIGURATION_STATE (3 << 4) +#define SUSPENDED_STATE (4 << 4) + +#define CTSQ_MASK (0x7) /* Control Transfer Stage */ +#define IDLE_SETUP_STAGE 0 /* Idle stage or setup stage */ +#define READ_DATA_STAGE 1 /* Control read data stage */ +#define READ_STATUS_STAGE 2 /* Control read status stage */ +#define WRITE_DATA_STAGE 3 /* Control write data stage */ +#define WRITE_STATUS_STAGE 4 /* Control write status stage */ +#define NODATA_STATUS_STAGE 5 /* Control write NoData status stage */ +#define SEQUENCE_ERROR 6 /* Control transfer sequence error */ + +/* INTSTS1 */ +#define OVRCR (1 << 15) /* OVRCR Interrupt Status */ +#define BCHG (1 << 14) /* USB Bus Change Interrupt Status */ +#define DTCH (1 << 12) /* USB Disconnection Detect Interrupt Status */ +#define ATTCH (1 << 11) /* ATTCH Interrupt Status */ +#define EOFERR (1 << 6) /* EOF Error Detect Interrupt Status */ +#define SIGN (1 << 5) /* Setup Transaction Error Interrupt Status */ +#define SACK (1 << 4) /* Setup Transaction ACK Response Interrupt Status */ + +/* PIPECFG */ +/* DCPCFG */ +#define TYPE_NONE (0 << 14) /* Transfer Type */ +#define TYPE_BULK (1 << 14) +#define TYPE_INT (2 << 14) +#define TYPE_ISO (3 << 14) +#define BFRE (1 << 10) /* BRDY Interrupt Operation Spec. */ +#define DBLB (1 << 9) /* Double Buffer Mode */ +#define SHTNAK (1 << 7) /* Pipe Disable in Transfer End */ +#define DIR_OUT (1 << 4) /* Transfer Direction */ + +/* PIPEMAXP */ +/* DCPMAXP */ +#define DEVSEL_MASK (0xF << 12) /* Device Select */ +#define DCP_MAXP_MASK (0x7F) +#define PIPE_MAXP_MASK (0x7FF) + +/* PIPEBUF */ +#define BUFSIZE_SHIFT 10 +#define BUFSIZE_MASK (0x1F << BUFSIZE_SHIFT) +#define BUFNMB_MASK (0xFF) + +/* PIPEnCTR */ +/* DCPCTR */ +#define BSTS (1 << 15) /* Buffer Status */ +#define SUREQ (1 << 14) /* Sending SETUP Token */ +#define INBUFM (1 << 14) /* (PIPEnCTR) Transfer Buffer Monitor */ +#define CSSTS (1 << 12) /* CSSTS Status */ +#define ACLRM (1 << 9) /* Buffer Auto-Clear Mode */ +#define SQCLR (1 << 8) /* Toggle Bit Clear */ +#define SQSET (1 << 7) /* Toggle Bit Set */ +#define SQMON (1 << 6) /* Toggle Bit Check */ +#define PBUSY (1 << 5) /* Pipe Busy */ +#define PID_MASK (0x3) /* Response PID */ +#define PID_NAK 0 +#define PID_BUF 1 +#define PID_STALL10 2 +#define PID_STALL11 3 + +#define CCPL (1 << 2) /* Control Transfer End Enable */ + +/* PIPEnTRE */ +#define TRENB (1 << 9) /* Transaction Counter Enable */ +#define TRCLR (1 << 8) /* Transaction Counter Clear */ + +/* FRMNUM */ +#define FRNM_MASK (0x7FF) + +/* DEVADDn */ +#define UPPHUB(x) (((x) & 0xF) << 11) /* HUB Register */ +#define HUBPORT(x) (((x) & 0x7) << 8) /* HUB Port for Target Device */ +#define USBSPD(x) (((x) & 0x3) << 6) /* Device Transfer Rate */ +#define USBSPD_SPEED_LOW 0x1 +#define USBSPD_SPEED_FULL 0x2 +#define USBSPD_SPEED_HIGH 0x3 + +/* SUSPMODE */ +#define SUSPM (1 << 14) /* SuspendM Control */ + +/* + * struct + */ +struct usbhs_priv { + void __iomem *base; + struct renesas_usbhs_driver_param dparam; + struct platform_device *pdev; + + /* + * module control + */ + struct usbhs_mod_info mod_info; + + /* + * pipe control + */ + struct usbhs_pipe_info pipe_info; + + /* + * fifo control + */ + struct usbhs_fifo_info fifo_info; +}; + +/* + * common + */ +u16 usbhs_read(struct usbhs_priv *priv, u32 reg); +void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data); +void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data); + +#define usbhs_lock(p, f) spin_lock_irqsave(usbhs_priv_to_lock(p), f) +#define usbhs_unlock(p, f) spin_unlock_irqrestore(usbhs_priv_to_lock(p), f) + +/* + * sysconfig + */ +void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable); +void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable); +void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable); +void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode); + +/* + * usb request + */ +void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req); +void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req); + +/* + * bus + */ +void usbhs_bus_send_sof_enable(struct usbhs_priv *priv); +void usbhs_bus_send_reset(struct usbhs_priv *priv); +int usbhs_bus_get_speed(struct usbhs_priv *priv); +int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable); +void usbhsc_hotplug(struct usbhs_priv *priv); + +/* + * frame + */ +int usbhs_frame_get_num(struct usbhs_priv *priv); + +/* + * device config + */ +int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, u16 upphub, + u16 hubport, u16 speed); + +/* + * interrupt functions + */ +void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit); + +/* + * data + */ +#define usbhs_get_dparam(priv, param) (priv->dparam.param) +#define usbhs_priv_to_dev(priv) (&priv->pdev->dev) + +#endif /* RENESAS_USB_DRIVER_H */ diff --git a/drivers/usb/gadget/rcar/fifo.c b/drivers/usb/gadget/rcar/fifo.c new file mode 100644 index 00000000000..6016b2987d5 --- /dev/null +++ b/drivers/usb/gadget/rcar/fifo.c @@ -0,0 +1,1067 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#include <linux/delay.h> +#include <linux/io.h> +#include "common.h" +#include "pipe.h" + +#define usbhsf_get_cfifo(p) (&((p)->fifo_info.cfifo)) + +#define usbhsf_fifo_is_busy(f) ((f)->pipe) /* see usbhs_pipe_select_fifo */ + +/* + * packet initialize + */ +void usbhs_pkt_init(struct usbhs_pkt *pkt) +{ + INIT_LIST_HEAD(&pkt->node); +} + +/* + * packet control function + */ +static int usbhsf_null_handle(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); + struct device *dev = usbhs_priv_to_dev(priv); + + dev_err(dev, "null handler\n"); + + return -EINVAL; +} + +static const struct usbhs_pkt_handle usbhsf_null_handler = { + .prepare = usbhsf_null_handle, + .try_run = usbhsf_null_handle, +}; + +void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, + void (*done)(struct usbhs_priv *priv, + struct usbhs_pkt *pkt), + void *buf, int len, int zero, int sequence) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + unsigned long flags; + + if (!done) { + dev_err(dev, "no done function\n"); + return; + } + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + if (!pipe->handler) { + dev_err(dev, "no handler function\n"); + pipe->handler = &usbhsf_null_handler; + } + + list_move_tail(&pkt->node, &pipe->list); + + /* + * each pkt must hold own handler. + * because handler might be changed by its situation. + * dma handler -> pio handler. + */ + pkt->pipe = pipe; + pkt->buf = buf; + pkt->handler = pipe->handler; + pkt->length = len; + pkt->zero = zero; + pkt->actual = 0; + pkt->done = done; + pkt->sequence = sequence; + + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ +} + +static void __usbhsf_pkt_del(struct usbhs_pkt *pkt) +{ + list_del_init(&pkt->node); +} + +struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe) +{ + return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node); +} + +static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo); +static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, + struct usbhs_pkt *pkt); +#define usbhsf_dma_map(p) __usbhsf_dma_map_ctrl(p, 1) +#define usbhsf_dma_unmap(p) __usbhsf_dma_map_ctrl(p, 0) +static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map); +static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable); +static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable); +struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt) +{ + struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); + unsigned long flags; + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + usbhs_pipe_disable(pipe); + + if (!pkt) + pkt = __usbhsf_pkt_get(pipe); + + if (pkt) { + struct dma_chan *chan = NULL; + + if (fifo) + chan = usbhsf_dma_chan_get(fifo, pkt); + if (chan) + usbhsf_dma_unmap(pkt); + + usbhs_pipe_clear_without_sequence(pipe, 0, 0); + usbhs_pipe_running(pipe, 0); + + __usbhsf_pkt_del(pkt); + } + + if (fifo) + usbhsf_fifo_unselect(pipe, fifo); + + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + return pkt; +} + +enum { + USBHSF_PKT_PREPARE, + USBHSF_PKT_TRY_RUN, + USBHSF_PKT_DMA_DONE, +}; + +static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_pkt *pkt; + struct device *dev = usbhs_priv_to_dev(priv); + int (*func)(struct usbhs_pkt *pkt, int *is_done); + unsigned long flags; + int ret = 0; + int is_done = 0; + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + pkt = __usbhsf_pkt_get(pipe); + if (!pkt) { + ret = -EINVAL; + goto __usbhs_pkt_handler_end; + } + + switch (type) { + case USBHSF_PKT_PREPARE: + func = pkt->handler->prepare; + break; + case USBHSF_PKT_TRY_RUN: + func = pkt->handler->try_run; + break; + case USBHSF_PKT_DMA_DONE: + func = pkt->handler->dma_done; + break; + default: + dev_err(dev, "unknown pkt handler\n"); + goto __usbhs_pkt_handler_end; + } + + if (likely(func)) + ret = func(pkt, &is_done); + + if (is_done) + __usbhsf_pkt_del(pkt); + +__usbhs_pkt_handler_end: + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + if (is_done) { + pkt->done(priv, pkt); + usbhs_pkt_start(pipe); + } + + return ret; +} + +void usbhs_pkt_start(struct usbhs_pipe *pipe) +{ + usbhsf_pkt_handler(pipe, USBHSF_PKT_PREPARE); +} + +/* + * irq enable/disable function + */ +#define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_bempsts, e) +#define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, irq_brdysts, e) +#define usbhsf_irq_callback_ctrl(pipe, status, enable) \ + ({ \ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \ + struct usbhs_mod *mod = usbhs_mod_get_current(priv); \ + u16 status = (1 << usbhs_pipe_number(pipe)); \ + if (!mod) \ + return; \ + if (enable) \ + mod->status |= status; \ + else \ + mod->status &= ~status; \ + usbhs_irq_callback_update(priv, mod); \ + }) + +static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable) +{ + /* + * And DCP pipe can NOT use "ready interrupt" for "send" + * it should use "empty" interrupt. + * see + * "Operation" - "Interrupt Function" - "BRDY Interrupt" + * + * on the other hand, normal pipe can use "ready interrupt" for "send" + * even though it is single/double buffer + */ + if (usbhs_pipe_is_dcp(pipe)) + usbhsf_irq_empty_ctrl(pipe, enable); + else + usbhsf_irq_ready_ctrl(pipe, enable); +} + +static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable) +{ + usbhsf_irq_ready_ctrl(pipe, enable); +} + +/* + * FIFO ctrl + */ +static void usbhsf_send_terminator(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + usbhs_bset(priv, fifo->ctr, BVAL, BVAL); +} + +static int usbhsf_fifo_barrier(struct usbhs_priv *priv, + struct usbhs_fifo *fifo) +{ + /* The FIFO port is accessible */ + if (usbhs_read(priv, fifo->ctr) & FRDY) + return 0; + + return -EBUSY; +} + +static void usbhsf_fifo_clear(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int ret = 0; + + if (!usbhs_pipe_is_dcp(pipe)) { + /* + * This driver checks the pipe condition first to avoid -EBUSY + * from usbhsf_fifo_barrier() if the pipe is RX direction and + * empty. + */ + if (usbhs_pipe_is_dir_in(pipe)) + ret = usbhs_pipe_is_accessible(pipe); + if (!ret) + ret = usbhsf_fifo_barrier(priv, fifo); + } + + /* + * if non-DCP pipe, this driver should set BCLR when + * usbhsf_fifo_barrier() returns 0. + */ + if (!ret) + usbhs_write(priv, fifo->ctr, BCLR); +} + +static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv, + struct usbhs_fifo *fifo) +{ + return usbhs_read(priv, fifo->ctr) & DTLN_MASK; +} + +static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + usbhs_pipe_select_fifo(pipe, NULL); + usbhs_write(priv, fifo->sel, 0); +} + +static int usbhsf_fifo_select(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo, + int write) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int timeout = 1024; + u16 mask = ((1 << 5) | 0xF); /* mask of ISEL | CURPIPE */ + u16 base = usbhs_pipe_number(pipe); /* CURPIPE */ + + if (usbhs_pipe_is_busy(pipe) || + usbhsf_fifo_is_busy(fifo)) + return -EBUSY; + + if (usbhs_pipe_is_dcp(pipe)) { + base |= (1 == write) << 5; /* ISEL */ + + if (usbhs_mod_is_host(priv)) + usbhs_dcp_dir_for_host(pipe, write); + } + + /* "base" will be used below */ + usbhs_write(priv, fifo->sel, base | MBW_32); + + /* check ISEL and CURPIPE value */ + while (timeout--) { + if (base == (mask & usbhs_read(priv, fifo->sel))) { + usbhs_pipe_select_fifo(pipe, fifo); + return 0; + } + udelay(10); + } + + dev_err(dev, "fifo select error\n"); + + return -EIO; +} + +/* + * DCP status stage + */ +static int usbhs_dcp_dir_switch_to_write(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ + struct device *dev = usbhs_priv_to_dev(priv); + int ret; + + usbhs_pipe_disable(pipe); + + ret = usbhsf_fifo_select(pipe, fifo, 1); + if (ret < 0) { + dev_err(dev, "%s() failed\n", __func__); + return ret; + } + + usbhs_pipe_sequence_data1(pipe); /* DATA1 */ + + usbhsf_fifo_clear(pipe, fifo); + usbhsf_send_terminator(pipe, fifo); + + usbhsf_fifo_unselect(pipe, fifo); + + usbhsf_tx_irq_ctrl(pipe, 1); + usbhs_pipe_enable(pipe); + + return ret; +} + +static int usbhs_dcp_dir_switch_to_read(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ + struct device *dev = usbhs_priv_to_dev(priv); + int ret; + + usbhs_pipe_disable(pipe); + + ret = usbhsf_fifo_select(pipe, fifo, 0); + if (ret < 0) { + dev_err(dev, "%s() fail\n", __func__); + return ret; + } + + usbhs_pipe_sequence_data1(pipe); /* DATA1 */ + usbhsf_fifo_clear(pipe, fifo); + + usbhsf_fifo_unselect(pipe, fifo); + + usbhsf_rx_irq_ctrl(pipe, 1); + usbhs_pipe_enable(pipe); + + return ret; + +} + +static int usbhs_dcp_dir_switch_done(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + + if (pkt->handler == &usbhs_dcp_status_stage_in_handler) + usbhsf_tx_irq_ctrl(pipe, 0); + else + usbhsf_rx_irq_ctrl(pipe, 0); + + pkt->actual = pkt->length; + *is_done = 1; + + return 0; +} + +const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler = { + .prepare = usbhs_dcp_dir_switch_to_write, + .try_run = usbhs_dcp_dir_switch_done, +}; + +const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler = { + .prepare = usbhs_dcp_dir_switch_to_read, + .try_run = usbhs_dcp_dir_switch_done, +}; + +/* + * DCP data stage (push) + */ +static int usbhsf_dcp_data_stage_try_push(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + + usbhs_pipe_sequence_data1(pipe); /* DATA1 */ + + /* + * change handler to PIO push + */ + pkt->handler = &usbhs_fifo_pio_push_handler; + + return pkt->handler->prepare(pkt, is_done); +} + +const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler = { + .prepare = usbhsf_dcp_data_stage_try_push, +}; + +/* + * DCP data stage (pop) + */ +static int usbhsf_dcp_data_stage_prepare_pop(struct usbhs_pkt *pkt, + int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); + + if (usbhs_pipe_is_busy(pipe)) + return 0; + + /* + * prepare pop for DCP should + * - change DCP direction, + * - clear fifo + * - DATA1 + */ + usbhs_pipe_disable(pipe); + + usbhs_pipe_sequence_data1(pipe); /* DATA1 */ + + usbhsf_fifo_select(pipe, fifo, 0); + usbhsf_fifo_clear(pipe, fifo); + usbhsf_fifo_unselect(pipe, fifo); + + /* + * change handler to PIO pop + */ + pkt->handler = &usbhs_fifo_pio_pop_handler; + + return pkt->handler->prepare(pkt, is_done); +} + +const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler = { + .prepare = usbhsf_dcp_data_stage_prepare_pop, +}; + +/* + * PIO push handler + */ +static int usbhsf_pio_try_push(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ + void __iomem *addr = priv->base + fifo->port; + u8 *buf; + int maxp = usbhs_pipe_get_maxpacket(pipe); + int total_len; + int i, ret, len; + int is_short; + + usbhs_pipe_data_sequence(pipe, pkt->sequence); + pkt->sequence = -1; /* -1 sequence will be ignored */ + + usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); + + ret = usbhsf_fifo_select(pipe, fifo, 1); + if (ret < 0) + return 0; + + ret = usbhs_pipe_is_accessible(pipe); + if (ret < 0) { + /* inaccessible pipe is not an error */ + ret = 0; + goto usbhs_fifo_write_busy; + } + + ret = usbhsf_fifo_barrier(priv, fifo); + if (ret < 0) + goto usbhs_fifo_write_busy; + + buf = pkt->buf + pkt->actual; + len = pkt->length - pkt->actual; + len = min(len, maxp); + total_len = len; + is_short = total_len < maxp; + + /* + * FIXME + * + * 32-bit access only + */ + if (len >= 4 && !((unsigned long)buf & 0x03)) { + iowrite32_rep(addr, buf, len / 4); + len %= 4; + buf += total_len - len; + } + + /* the rest operation */ + if (usbhs_get_dparam(priv, cfifo_byte_addr)) { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (i & 0x03)); + } else { + for (i = 0; i < len; i++) + iowrite8(buf[i], addr + (0x03 - (i & 0x03))); + } + + /* + * variable update + */ + pkt->actual += total_len; + + if (pkt->actual < pkt->length) + *is_done = 0; /* there are remainder data */ + else if (is_short) + *is_done = 1; /* short packet */ + else + *is_done = !pkt->zero; /* send zero packet ? */ + + /* + * pipe/irq handling + */ + if (is_short) + usbhsf_send_terminator(pipe, fifo); + + usbhsf_tx_irq_ctrl(pipe, !*is_done); + usbhs_pipe_running(pipe, !*is_done); + usbhs_pipe_enable(pipe); + + dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n", + usbhs_pipe_number(pipe), + pkt->length, pkt->actual, *is_done, pkt->zero); + + usbhsf_fifo_unselect(pipe, fifo); + + return 0; + +usbhs_fifo_write_busy: + usbhsf_fifo_unselect(pipe, fifo); + + /* + * pipe is busy. + * retry in interrupt + */ + usbhsf_tx_irq_ctrl(pipe, 1); + usbhs_pipe_running(pipe, 1); + + return ret; +} + +static int usbhsf_pio_prepare_push(struct usbhs_pkt *pkt, int *is_done) +{ + if (usbhs_pipe_is_running(pkt->pipe)) + return 0; + + return usbhsf_pio_try_push(pkt, is_done); +} + +const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler = { + .prepare = usbhsf_pio_prepare_push, + .try_run = usbhsf_pio_try_push, +}; + +/* + * PIO pop handler + */ +static int usbhsf_prepare_pop(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); + + if (usbhs_pipe_is_busy(pipe)) + return 0; + + if (usbhs_pipe_is_running(pipe)) + return 0; + + /* + * pipe enable to prepare packet receive + */ + usbhs_pipe_data_sequence(pipe, pkt->sequence); + pkt->sequence = -1; /* -1 sequence will be ignored */ + + if (usbhs_pipe_is_dcp(pipe)) + usbhsf_fifo_clear(pipe, fifo); + + usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->length); + usbhs_pipe_enable(pipe); + usbhs_pipe_running(pipe, 1); + usbhsf_rx_irq_ctrl(pipe, 1); + + return 0; +} + +static int usbhsf_pio_try_pop(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ + void __iomem *addr = priv->base + fifo->port; + u8 *buf; + u32 data = 0; + int maxp = usbhs_pipe_get_maxpacket(pipe); + int rcv_len, len; + int i, ret; + int total_len = 0; + + ret = usbhsf_fifo_select(pipe, fifo, 0); + if (ret < 0) + return 0; + + ret = usbhsf_fifo_barrier(priv, fifo); + if (ret < 0) + goto usbhs_fifo_read_busy; + + rcv_len = usbhsf_fifo_rcv_len(priv, fifo); + + buf = pkt->buf + pkt->actual; + len = pkt->length - pkt->actual; + len = min(len, rcv_len); + total_len = len; + + /* + * update actual length first here to decide disable pipe. + * if this pipe keeps BUF status and all data were popped, + * then, next interrupt/token will be issued again + */ + pkt->actual += total_len; + + if ((pkt->actual == pkt->length) || /* receive all data */ + (total_len < maxp)) { /* short packet */ + *is_done = 1; + usbhsf_rx_irq_ctrl(pipe, 0); + usbhs_pipe_running(pipe, 0); + /* + * If function mode, since this controller is possible to enter + * Control Write status stage at this timing, this driver + * should not disable the pipe. If such a case happens, this + * controller is not able to complete the status stage. + */ + if (!usbhs_mod_is_host(priv) && !usbhs_pipe_is_dcp(pipe)) + usbhs_pipe_disable(pipe); /* disable pipe first */ + } + + /* + * Buffer clear if Zero-Length packet + * + * see + * "Operation" - "FIFO Buffer Memory" - "FIFO Port Function" + */ + if (0 == rcv_len) { + pkt->zero = 1; + usbhsf_fifo_clear(pipe, fifo); + goto usbhs_fifo_read_end; + } + + /* + * FIXME + * + * 32-bit access only + */ + if (len >= 4 && !((unsigned long)buf & 0x03)) { + ioread32_rep(addr, buf, len / 4); + len %= 4; + buf += total_len - len; + } + + /* the rest operation */ + for (i = 0; i < len; i++) { + if (!(i & 0x03)) + data = ioread32(addr); + + buf[i] = (data >> ((i & 0x03) * 8)) & 0xff; + } + +usbhs_fifo_read_end: + dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n", + usbhs_pipe_number(pipe), + pkt->length, pkt->actual, *is_done, pkt->zero); + +usbhs_fifo_read_busy: + usbhsf_fifo_unselect(pipe, fifo); + + return ret; +} + +const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler = { + .prepare = usbhsf_prepare_pop, + .try_run = usbhsf_pio_try_pop, +}; + +/* + * DCP ctrol statge handler + */ +static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt, int *is_done) +{ + usbhs_dcp_control_transfer_done(pkt->pipe); + + *is_done = 1; + + return 0; +} + +const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = { + .prepare = usbhsf_ctrl_stage_end, + .try_run = usbhsf_ctrl_stage_end, +}; + +/* + * DMA fifo functions + */ +static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, + struct usbhs_pkt *pkt) +{ + if (&usbhs_fifo_dma_push_handler == pkt->handler) + return fifo->tx_chan; + + if (&usbhs_fifo_dma_pop_handler == pkt->handler) + return fifo->rx_chan; + + return NULL; +} + +#define usbhsf_dma_start(p, f) __usbhsf_dma_ctrl(p, f, DREQE) +#define usbhsf_dma_stop(p, f) __usbhsf_dma_ctrl(p, f, 0) +static void __usbhsf_dma_ctrl(struct usbhs_pipe *pipe, + struct usbhs_fifo *fifo, + u16 dreqe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + usbhs_bset(priv, fifo->sel, DREQE, dreqe); +} + +static int __usbhsf_dma_map_ctrl(struct usbhs_pkt *pkt, int map) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + + return info->dma_map_ctrl(pkt, map); +} + +/* + * DMA push handler + */ +static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + + if (usbhs_pipe_is_busy(pipe)) + return 0; + + /* + * change handler to PIO + */ + pkt->handler = &usbhs_fifo_pio_push_handler; + + return pkt->handler->prepare(pkt, is_done); +} + +static int usbhsf_dma_push_done(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + int is_short = pkt->trans % usbhs_pipe_get_maxpacket(pipe); + + pkt->actual += pkt->trans; + + if (pkt->actual < pkt->length) + *is_done = 0; /* there are remainder data */ + else if (is_short) + *is_done = 1; /* short packet */ + else + *is_done = !pkt->zero; /* send zero packet? */ + + usbhs_pipe_running(pipe, !*is_done); + + usbhsf_dma_stop(pipe, pipe->fifo); + usbhsf_dma_unmap(pkt); + usbhsf_fifo_unselect(pipe, pipe->fifo); + + if (!*is_done) { + /* change handler to PIO */ + pkt->handler = &usbhs_fifo_pio_push_handler; + return pkt->handler->try_run(pkt, is_done); + } + + return 0; +} + +const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler = { + .prepare = usbhsf_dma_prepare_push, + .dma_done = usbhsf_dma_push_done, +}; + +/* + * DMA pop handler + */ + +static int usbhsf_dma_prepare_pop_with_rx_irq(struct usbhs_pkt *pkt, + int *is_done) +{ + return usbhsf_prepare_pop(pkt, is_done); +} + +static int usbhsf_dma_prepare_pop(struct usbhs_pkt *pkt, int *is_done) +{ + return usbhsf_dma_prepare_pop_with_rx_irq(pkt, is_done); +} + +static int usbhsf_dma_try_pop_with_rx_irq(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + + if (usbhs_pipe_is_busy(pipe)) + return 0; + + /* + * change handler to PIO + */ + pkt->handler = &usbhs_fifo_pio_pop_handler; + + return pkt->handler->try_run(pkt, is_done); +} + +static int usbhsf_dma_try_pop(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe); + + BUG_ON(usbhs_get_dparam(priv, has_usb_dmac)); + + return usbhsf_dma_try_pop_with_rx_irq(pkt, is_done); +} + +static int usbhsf_dma_pop_done_with_rx_irq(struct usbhs_pkt *pkt, int *is_done) +{ + struct usbhs_pipe *pipe = pkt->pipe; + int maxp = usbhs_pipe_get_maxpacket(pipe); + + usbhsf_dma_stop(pipe, pipe->fifo); + usbhsf_dma_unmap(pkt); + usbhsf_fifo_unselect(pipe, pipe->fifo); + + pkt->actual += pkt->trans; + + if ((pkt->actual == pkt->length) || /* receive all data */ + (pkt->trans < maxp)) { /* short packet */ + *is_done = 1; + usbhs_pipe_running(pipe, 0); + } else { + /* re-enable */ + usbhs_pipe_running(pipe, 0); + usbhsf_prepare_pop(pkt, is_done); + } + + return 0; +} + +static int usbhsf_dma_pop_done(struct usbhs_pkt *pkt, int *is_done) +{ + return usbhsf_dma_pop_done_with_rx_irq(pkt, is_done); +} + +const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler = { + .prepare = usbhsf_dma_prepare_pop, + .try_run = usbhsf_dma_try_pop, + .dma_done = usbhsf_dma_pop_done +}; + +/* + * irq functions + */ +static int usbhsf_irq_empty(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state) +{ + struct usbhs_pipe *pipe; + struct device *dev = usbhs_priv_to_dev(priv); + int i, ret; + + if (!irq_state->bempsts) { + dev_err(dev, "debug %s !!\n", __func__); + return -EIO; + } + + dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts); + + /* + * search interrupted "pipe" + * not "uep". + */ + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + if (!(irq_state->bempsts & (1 << i))) + continue; + + ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); + if (ret < 0) + dev_err(dev, "irq_empty run_error %d : %d\n", i, ret); + } + + return 0; +} + +static int usbhsf_irq_ready(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state) +{ + struct usbhs_pipe *pipe; + struct device *dev = usbhs_priv_to_dev(priv); + int i, ret; + + if (!irq_state->brdysts) { + dev_err(dev, "debug %s !!\n", __func__); + return -EIO; + } + + dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts); + + /* + * search interrupted "pipe" + * not "uep". + */ + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + if (!(irq_state->brdysts & (1 << i))) + continue; + + ret = usbhsf_pkt_handler(pipe, USBHSF_PKT_TRY_RUN); + if (ret < 0) + dev_err(dev, "irq_ready run_error %d : %d\n", i, ret); + } + + return 0; +} + +void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_fifo *fifo = usbhsf_get_cfifo(priv); /* CFIFO */ + + /* clear DCP FIFO of transmission */ + if (usbhsf_fifo_select(pipe, fifo, 1) < 0) + return; + usbhsf_fifo_clear(pipe, fifo); + usbhsf_fifo_unselect(pipe, fifo); + + /* clear DCP FIFO of reception */ + if (usbhsf_fifo_select(pipe, fifo, 0) < 0) + return; + usbhsf_fifo_clear(pipe, fifo); + usbhsf_fifo_unselect(pipe, fifo); +} + +/* + * fifo init + */ +void usbhs_fifo_init(struct usbhs_priv *priv) +{ + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + struct usbhs_fifo *cfifo = usbhsf_get_cfifo(priv); + struct usbhs_fifo *dfifo; + int i; + + mod->irq_empty = usbhsf_irq_empty; + mod->irq_ready = usbhsf_irq_ready; + mod->irq_bempsts = 0; + mod->irq_brdysts = 0; + + cfifo->pipe = NULL; + usbhs_for_each_dfifo(priv, dfifo, i) + dfifo->pipe = NULL; +} + +void usbhs_fifo_quit(struct usbhs_priv *priv) +{ + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + + mod->irq_empty = NULL; + mod->irq_ready = NULL; + mod->irq_bempsts = 0; + mod->irq_brdysts = 0; +} + +#define __USBHS_DFIFO_INIT(priv, fifo, channel, fifo_port) \ +do { \ + fifo = usbhsf_get_dnfifo(priv, channel); \ + fifo->name = "D"#channel"FIFO"; \ + fifo->port = fifo_port; \ + fifo->sel = D##channel##FIFOSEL; \ + fifo->ctr = D##channel##FIFOCTR; \ + fifo->tx_slave.shdma_slave.slave_id = \ + usbhs_get_dparam(priv, d##channel##_tx_id); \ + fifo->rx_slave.shdma_slave.slave_id = \ + usbhs_get_dparam(priv, d##channel##_rx_id); \ +} while (0) + +#define USBHS_DFIFO_INIT(priv, fifo, channel) \ + __USBHS_DFIFO_INIT(priv, fifo, channel, D##channel##FIFO) +#define USBHS_DFIFO_INIT_NO_PORT(priv, fifo, channel) \ + __USBHS_DFIFO_INIT(priv, fifo, channel, 0) + +int usbhs_fifo_probe(struct usbhs_priv *priv) +{ + struct usbhs_fifo *fifo; + + /* CFIFO */ + fifo = usbhsf_get_cfifo(priv); + fifo->name = "CFIFO"; + fifo->port = CFIFO; + fifo->sel = CFIFOSEL; + fifo->ctr = CFIFOCTR; + + /* DFIFO */ + USBHS_DFIFO_INIT(priv, fifo, 0); + USBHS_DFIFO_INIT(priv, fifo, 1); + USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 2); + USBHS_DFIFO_INIT_NO_PORT(priv, fifo, 3); + + return 0; +} + +void usbhs_fifo_remove(struct usbhs_priv *priv) +{ +} diff --git a/drivers/usb/gadget/rcar/fifo.h b/drivers/usb/gadget/rcar/fifo.h new file mode 100644 index 00000000000..86746ca9bdd --- /dev/null +++ b/drivers/usb/gadget/rcar/fifo.h @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-1.0+ */ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#ifndef RENESAS_USB_FIFO_H +#define RENESAS_USB_FIFO_H + +#include <dma.h> +#include "pipe.h" + +/* + * Drivers, using this library are expected to embed struct shdma_dev, + * struct shdma_chan, struct shdma_desc, and struct shdma_slave + * in their respective device, channel, descriptor and slave objects. + */ + +struct shdma_slave { + int slave_id; +}; + +/* Used by slave DMA clients to request DMA to/from a specific peripheral */ +struct sh_dmae_slave { + struct shdma_slave shdma_slave; /* Set by the platform */ +}; + +struct usbhs_fifo { + char *name; + u32 port; /* xFIFO */ + u32 sel; /* xFIFOSEL */ + u32 ctr; /* xFIFOCTR */ + + struct usbhs_pipe *pipe; + + struct dma_chan *tx_chan; + struct dma_chan *rx_chan; + + struct sh_dmae_slave tx_slave; + struct sh_dmae_slave rx_slave; +}; + +#define USBHS_MAX_NUM_DFIFO 4 +struct usbhs_fifo_info { + struct usbhs_fifo cfifo; + struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO]; +}; +#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n])) +#define usbhs_for_each_dfifo(priv, dfifo, i) \ + for ((i) = 0; \ + ((i) < USBHS_MAX_NUM_DFIFO) && \ + ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \ + (i)++) + +struct usbhs_pkt_handle; +struct usbhs_pkt { + struct list_head node; + struct usbhs_pipe *pipe; + const struct usbhs_pkt_handle *handler; + void (*done)(struct usbhs_priv *priv, + struct usbhs_pkt *pkt); + struct work_struct work; + dma_addr_t dma; + const struct dmaengine_result *dma_result; + void *buf; + int length; + int trans; + int actual; + int zero; + int sequence; +}; + +struct usbhs_pkt_handle { + int (*prepare)(struct usbhs_pkt *pkt, int *is_done); + int (*try_run)(struct usbhs_pkt *pkt, int *is_done); + int (*dma_done)(struct usbhs_pkt *pkt, int *is_done); +}; + +/* + * fifo + */ +int usbhs_fifo_probe(struct usbhs_priv *priv); +void usbhs_fifo_remove(struct usbhs_priv *priv); +void usbhs_fifo_init(struct usbhs_priv *priv); +void usbhs_fifo_quit(struct usbhs_priv *priv); +void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe); + +/* + * packet info + */ +extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; +extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; +extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; + +extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; +extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; + +extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; +extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; + +extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; +extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; + +void usbhs_pkt_init(struct usbhs_pkt *pkt); +void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, + void (*done)(struct usbhs_priv *priv, + struct usbhs_pkt *pkt), + void *buf, int len, int zero, int sequence); +struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); +void usbhs_pkt_start(struct usbhs_pipe *pipe); +struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe); + +#endif /* RENESAS_USB_FIFO_H */ diff --git a/drivers/usb/gadget/rcar/mod.c b/drivers/usb/gadget/rcar/mod.c new file mode 100644 index 00000000000..f5f8d169e17 --- /dev/null +++ b/drivers/usb/gadget/rcar/mod.c @@ -0,0 +1,345 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#include "common.h" +#include "mod.h" + +/* + * autonomy + * + * these functions are used if platform doesn't have external phy. + * -> there is no "notify_hotplug" callback from platform + * -> call "notify_hotplug" by itself + * -> use own interrupt to connect/disconnect + * -> it mean module clock is always ON + * ~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +static int usbhsm_autonomy_irq_vbus(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state) +{ + usbhsc_hotplug(priv); + + return 0; +} + +void usbhs_mod_autonomy_mode(struct usbhs_priv *priv) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + info->irq_vbus = usbhsm_autonomy_irq_vbus; + + usbhs_irq_callback_update(priv, NULL); +} + +/* + * host / gadget functions + * + * renesas_usbhs host/gadget can register itself by below functions. + * these functions are called when probe + * + */ +void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *mod, int id) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + info->mod[id] = mod; + mod->priv = priv; +} + +struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + struct usbhs_mod *ret = NULL; + + switch (id) { + case USBHS_HOST: + case USBHS_GADGET: + ret = info->mod[id]; + break; + } + + return ret; +} + +int usbhs_mod_is_host(struct usbhs_priv *priv) +{ + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + if (!mod) + return -EINVAL; + + return info->mod[USBHS_HOST] == mod; +} + +struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + return info->curt; +} + +int usbhs_mod_change(struct usbhs_priv *priv, int id) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + struct usbhs_mod *mod = NULL; + int ret = 0; + + /* id < 0 mean no current */ + switch (id) { + case USBHS_HOST: + case USBHS_GADGET: + mod = info->mod[id]; + break; + default: + ret = -EINVAL; + } + info->curt = mod; + + return ret; +} + +irqreturn_t usbhs_interrupt(int irq, void *data); +int usbhs_mod_probe(struct usbhs_priv *priv) +{ + int ret; + + /* + * install host/gadget driver + */ + ret = usbhs_mod_host_probe(priv); + if (ret < 0) + return ret; + + ret = usbhs_mod_gadget_probe(priv); + if (ret < 0) + goto mod_init_host_err; + + return ret; + +mod_init_host_err: + usbhs_mod_host_remove(priv); + + return ret; +} + +void usbhs_mod_remove(struct usbhs_priv *priv) +{ + usbhs_mod_host_remove(priv); + usbhs_mod_gadget_remove(priv); +} + +/* + * status functions + */ +int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state) +{ + return (int)irq_state->intsts0 & DVSQ_MASK; +} + +int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state) +{ + /* + * return value + * + * IDLE_SETUP_STAGE + * READ_DATA_STAGE + * READ_STATUS_STAGE + * WRITE_DATA_STAGE + * WRITE_STATUS_STAGE + * NODATA_STATUS_STAGE + * SEQUENCE_ERROR + */ + return (int)irq_state->intsts0 & CTSQ_MASK; +} + +static int usbhs_status_get_each_irq(struct usbhs_priv *priv, + struct usbhs_irq_state *state) +{ + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + u16 intenb0, intenb1; + unsigned long flags; + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + state->intsts0 = usbhs_read(priv, INTSTS0); + intenb0 = usbhs_read(priv, INTENB0); + + if (usbhs_mod_is_host(priv)) { + state->intsts1 = usbhs_read(priv, INTSTS1); + intenb1 = usbhs_read(priv, INTENB1); + } else { + state->intsts1 = intenb1 = 0; + } + + /* mask */ + if (mod) { + state->brdysts = usbhs_read(priv, BRDYSTS); + state->nrdysts = usbhs_read(priv, NRDYSTS); + state->bempsts = usbhs_read(priv, BEMPSTS); + + state->bempsts &= mod->irq_bempsts; + state->brdysts &= mod->irq_brdysts; + } + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + return 0; +} + +/* + * interrupt + */ +#define INTSTS0_MAGIC 0xF800 /* acknowledge magical interrupt sources */ +#define INTSTS1_MAGIC 0xA870 /* acknowledge magical interrupt sources */ +irqreturn_t usbhs_interrupt(int irq, void *data) +{ + struct usbhs_priv *priv = data; + struct usbhs_irq_state irq_state; + + if (usbhs_status_get_each_irq(priv, &irq_state) < 0) + return IRQ_NONE; + + /* + * clear interrupt + * + * The hardware is _very_ picky to clear interrupt bit. + * Especially INTSTS0_MAGIC, INTSTS1_MAGIC value. + * + * see + * "Operation" + * - "Control Transfer (DCP)" + * - Function :: VALID bit should 0 + */ + usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC); + if (usbhs_mod_is_host(priv)) + usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC); + + /* + * The driver should not clear the xxxSTS after the line of + * "call irq callback functions" because each "if" statement is + * possible to call the callback function for avoiding any side effects. + */ + if (irq_state.intsts0 & BRDY) + usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); + usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts); + if (irq_state.intsts0 & BEMP) + usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); + + /* + * call irq callback functions + * see also + * usbhs_irq_setting_update + */ + + /* INTSTS0 */ + if (irq_state.intsts0 & VBINT) + usbhs_mod_info_call(priv, irq_vbus, priv, &irq_state); + + if (irq_state.intsts0 & DVST) + usbhs_mod_call(priv, irq_dev_state, priv, &irq_state); + + if (irq_state.intsts0 & CTRT) + usbhs_mod_call(priv, irq_ctrl_stage, priv, &irq_state); + + if (irq_state.intsts0 & BEMP) + usbhs_mod_call(priv, irq_empty, priv, &irq_state); + + if (irq_state.intsts0 & BRDY) + usbhs_mod_call(priv, irq_ready, priv, &irq_state); + + if (usbhs_mod_is_host(priv)) { + /* INTSTS1 */ + if (irq_state.intsts1 & ATTCH) + usbhs_mod_call(priv, irq_attch, priv, &irq_state); + + if (irq_state.intsts1 & DTCH) + usbhs_mod_call(priv, irq_dtch, priv, &irq_state); + + if (irq_state.intsts1 & SIGN) + usbhs_mod_call(priv, irq_sign, priv, &irq_state); + + if (irq_state.intsts1 & SACK) + usbhs_mod_call(priv, irq_sack, priv, &irq_state); + } + return IRQ_HANDLED; +} + +void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod) +{ + u16 intenb0 = 0; + u16 intenb1 = 0; + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + /* + * BEMPENB/BRDYENB are picky. + * below method is required + * + * - clear INTSTS0 + * - update BEMPENB/BRDYENB + * - update INTSTS0 + */ + usbhs_write(priv, INTENB0, 0); + if (usbhs_mod_is_host(priv)) + usbhs_write(priv, INTENB1, 0); + + usbhs_write(priv, BEMPENB, 0); + usbhs_write(priv, BRDYENB, 0); + + /* + * see also + * usbhs_interrupt + */ + + if (info->irq_vbus) + intenb0 |= VBSE; + + if (mod) { + /* + * INTSTS0 + */ + if (mod->irq_ctrl_stage) + intenb0 |= CTRE; + + if (mod->irq_dev_state) + intenb0 |= DVSE; + + if (mod->irq_empty && mod->irq_bempsts) { + usbhs_write(priv, BEMPENB, mod->irq_bempsts); + intenb0 |= BEMPE; + } + + if (mod->irq_ready && mod->irq_brdysts) { + usbhs_write(priv, BRDYENB, mod->irq_brdysts); + intenb0 |= BRDYE; + } + + if (usbhs_mod_is_host(priv)) { + /* + * INTSTS1 + */ + if (mod->irq_attch) + intenb1 |= ATTCHE; + + if (mod->irq_dtch) + intenb1 |= DTCHE; + + if (mod->irq_sign) + intenb1 |= SIGNE; + + if (mod->irq_sack) + intenb1 |= SACKE; + } + } + + if (intenb0) + usbhs_write(priv, INTENB0, intenb0); + + if (usbhs_mod_is_host(priv) && intenb1) + usbhs_write(priv, INTENB1, intenb1); +} diff --git a/drivers/usb/gadget/rcar/mod.h b/drivers/usb/gadget/rcar/mod.h new file mode 100644 index 00000000000..b670e950a28 --- /dev/null +++ b/drivers/usb/gadget/rcar/mod.h @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: GPL-1.0+ */ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#ifndef RENESAS_USB_MOD_H +#define RENESAS_USB_MOD_H + +#include "common.h" + +/* + * struct + */ +struct usbhs_irq_state { + u16 intsts0; + u16 intsts1; + u16 brdysts; + u16 nrdysts; + u16 bempsts; +}; + +struct usbhs_mod { + char *name; + + /* + * entry point from common.c + */ + int (*start)(struct usbhs_priv *priv); + int (*stop)(struct usbhs_priv *priv); + + /* + * INTSTS0 + */ + + /* DVST (DVSQ) */ + int (*irq_dev_state)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + /* CTRT (CTSQ) */ + int (*irq_ctrl_stage)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + /* BEMP / BEMPSTS */ + int (*irq_empty)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + u16 irq_bempsts; + + /* BRDY / BRDYSTS */ + int (*irq_ready)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + u16 irq_brdysts; + + /* + * INTSTS1 + */ + + /* ATTCHE */ + int (*irq_attch)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + /* DTCHE */ + int (*irq_dtch)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + /* SIGN */ + int (*irq_sign)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + /* SACK */ + int (*irq_sack)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); + + struct usbhs_priv *priv; +}; + +struct usbhs_mod_info { + struct usbhs_mod *mod[USBHS_MAX]; + struct usbhs_mod *curt; /* current mod */ + + /* + * INTSTS0 :: VBINT + * + * This function will be used as autonomy mode (runtime_pwctrl == 0) + * when the platform doesn't have own get_vbus function. + * + * This callback cannot be member of "struct usbhs_mod" because it + * will be used even though host/gadget has not been selected. + */ + int (*irq_vbus)(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state); +}; + +/* + * for host/gadget module + */ +struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id); +struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv); +void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id); +int usbhs_mod_is_host(struct usbhs_priv *priv); +int usbhs_mod_change(struct usbhs_priv *priv, int id); +int usbhs_mod_probe(struct usbhs_priv *priv); +void usbhs_mod_remove(struct usbhs_priv *priv); + +void usbhs_mod_autonomy_mode(struct usbhs_priv *priv); +void usbhs_mod_non_autonomy_mode(struct usbhs_priv *priv); + +/* + * status functions + */ +int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state); +int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state); + +/* + * callback functions + */ +void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod); + +irqreturn_t usbhs_interrupt(int irq, void *data); + +#define usbhs_mod_call(priv, func, param...) \ + ({ \ + struct usbhs_mod *mod; \ + mod = usbhs_mod_get_current(priv); \ + !mod ? -ENODEV : \ + !mod->func ? 0 : \ + mod->func(param); \ + }) + +#define usbhs_priv_to_modinfo(priv) (&priv->mod_info) +#define usbhs_mod_info_call(priv, func, param...) \ +({ \ + struct usbhs_mod_info *info; \ + info = usbhs_priv_to_modinfo(priv); \ + !info->func ? 0 : \ + info->func(param); \ +}) + +/* + * host / gadget control + */ +#if defined(CONFIG_USB_RENESAS_USBHS_HCD) || \ + defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE) +extern int usbhs_mod_host_probe(struct usbhs_priv *priv); +extern int usbhs_mod_host_remove(struct usbhs_priv *priv); +#else +static inline int usbhs_mod_host_probe(struct usbhs_priv *priv) +{ + return 0; +} +static inline void usbhs_mod_host_remove(struct usbhs_priv *priv) +{ +} +#endif + +extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv); +extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv); + +#endif /* RENESAS_USB_MOD_H */ diff --git a/drivers/usb/gadget/rcar/mod_gadget.c b/drivers/usb/gadget/rcar/mod_gadget.c new file mode 100644 index 00000000000..bd9855eb4fa --- /dev/null +++ b/drivers/usb/gadget/rcar/mod_gadget.c @@ -0,0 +1,1136 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2019 Renesas Electronics Corporation + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/usb/otg.h> +#include "common.h" + +/* + * struct + */ +struct usbhsg_request { + struct usb_request req; + struct usbhs_pkt pkt; +}; + +#define EP_NAME_SIZE 8 +struct usbhsg_gpriv; +struct usbhsg_uep { + struct usb_ep ep; + struct usbhs_pipe *pipe; + spinlock_t lock; /* protect the pipe */ + + char ep_name[EP_NAME_SIZE]; + + struct usbhsg_gpriv *gpriv; +}; + +struct usbhsg_gpriv { + struct usb_gadget gadget; + struct usbhs_mod mod; + + struct usbhsg_uep *uep; + int uep_size; + + struct usb_gadget_driver *driver; + bool vbus_active; + + u32 status; +#define USBHSG_STATUS_STARTED (1 << 0) +#define USBHSG_STATUS_REGISTERD (1 << 1) +#define USBHSG_STATUS_WEDGE (1 << 2) +#define USBHSG_STATUS_SELF_POWERED (1 << 3) +#define USBHSG_STATUS_SOFT_CONNECT (1 << 4) +}; + +struct usbhsg_recip_handle { + char *name; + int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl); + int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl); + int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl); +}; + +/* + * macro + */ +#define usbhsg_priv_to_gpriv(priv) \ + container_of( \ + usbhs_mod_get(priv, USBHS_GADGET), \ + struct usbhsg_gpriv, mod) + +#define __usbhsg_for_each_uep(start, pos, g, i) \ + for ((i) = start; \ + ((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \ + (i)++) + +#define usbhsg_for_each_uep(pos, gpriv, i) \ + __usbhsg_for_each_uep(1, pos, gpriv, i) + +#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ + __usbhsg_for_each_uep(0, pos, gpriv, i) + +#define usbhsg_gadget_to_gpriv(g)\ + container_of(g, struct usbhsg_gpriv, gadget) + +#define usbhsg_req_to_ureq(r)\ + container_of(r, struct usbhsg_request, req) + +#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) +#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) +#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) +#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) +#define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) +#define usbhsg_uep_to_gpriv(u) ((u)->gpriv) +#define usbhsg_uep_to_pipe(u) ((u)->pipe) +#define usbhsg_pipe_to_uep(p) ((p)->mod_private) +#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) + +#define usbhsg_ureq_to_pkt(u) (&(u)->pkt) +#define usbhsg_pkt_to_ureq(i) \ + container_of(i, struct usbhsg_request, pkt) + +#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) + +/* status */ +#define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) +#define usbhsg_status_set(gp, b) (gp->status |= b) +#define usbhsg_status_clr(gp, b) (gp->status &= ~b) +#define usbhsg_status_has(gp, b) (gp->status & b) + +/* + * queue push/pop + */ +static void __usbhsg_queue_pop(struct usbhsg_uep *uep, + struct usbhsg_request *ureq, + int status) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + + if (pipe) + dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); + + ureq->req.status = status; + spin_unlock(usbhs_priv_to_lock(priv)); + usb_gadget_giveback_request(&uep->ep, &ureq->req); + spin_lock(usbhs_priv_to_lock(priv)); +} + +static void usbhsg_queue_pop(struct usbhsg_uep *uep, + struct usbhsg_request *ureq, + int status) +{ + unsigned long flags; + + usbhs_lock(priv, flags); + __usbhsg_queue_pop(uep, ureq, status); + usbhs_unlock(priv, flags); +} + +static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) +{ + struct usbhs_pipe *pipe = pkt->pipe; + struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); + struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); + unsigned long flags; + + ureq->req.actual = pkt->actual; + + usbhs_lock(priv, flags); + if (uep) + __usbhsg_queue_pop(uep, ureq, 0); + usbhs_unlock(priv, flags); +} + +static void usbhsg_queue_push(struct usbhsg_uep *uep, + struct usbhsg_request *ureq) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); + struct usb_request *req = &ureq->req; + + req->actual = 0; + req->status = -EINPROGRESS; + usbhs_pkt_push(pipe, pkt, usbhsg_queue_done, + req->buf, req->length, req->zero, -1); + usbhs_pkt_start(pipe); + + dev_dbg(dev, "pipe %d : queue push (%d)\n", + usbhs_pipe_number(pipe), + req->length); +} + +/* + * dma map/unmap + */ +static int usbhsg_dma_map_ctrl(struct usbhs_pkt *pkt, int map) +{ + return -1; +} + +/* + * USB_TYPE_STANDARD / clear feature functions + */ +static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); + + usbhs_dcp_control_transfer_done(pipe); + + return 0; +} + +static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + + if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { + usbhs_pipe_disable(pipe); + usbhs_pipe_sequence_data0(pipe); + usbhs_pipe_enable(pipe); + } + + usbhsg_recip_handler_std_control_done(priv, uep, ctrl); + + usbhs_pkt_start(pipe); + + return 0; +} + +static struct usbhsg_recip_handle req_clear_feature = { + .name = "clear feature", + .device = usbhsg_recip_handler_std_control_done, + .interface = usbhsg_recip_handler_std_control_done, + .endpoint = usbhsg_recip_handler_std_clear_endpoint, +}; + +/* + * USB_TYPE_STANDARD / set feature functions + */ +static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + switch (le16_to_cpu(ctrl->wValue)) { + case USB_DEVICE_TEST_MODE: + usbhsg_recip_handler_std_control_done(priv, uep, ctrl); + udelay(100); + usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex) >> 8); + break; + default: + usbhsg_recip_handler_std_control_done(priv, uep, ctrl); + break; + } + + return 0; +} + +static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + + usbhs_pipe_stall(pipe); + + usbhsg_recip_handler_std_control_done(priv, uep, ctrl); + + return 0; +} + +static struct usbhsg_recip_handle req_set_feature = { + .name = "set feature", + .device = usbhsg_recip_handler_std_set_device, + .interface = usbhsg_recip_handler_std_control_done, + .endpoint = usbhsg_recip_handler_std_set_endpoint, +}; + +/* + * USB_TYPE_STANDARD / get status functions + */ +static void __usbhsg_recip_send_complete(struct usb_ep *ep, + struct usb_request *req) +{ + struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); + + /* free allocated recip-buffer/usb_request */ + kfree(ureq->pkt.buf); + usb_ep_free_request(ep, req); +} + +static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv, + unsigned short status) +{ + struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + struct usb_request *req; + __le16 *buf; + + /* alloc new usb_request for recip */ + req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC); + if (!req) { + dev_err(dev, "recip request allocation fail\n"); + return; + } + + /* alloc recip data buffer */ + buf = kmalloc(sizeof(*buf), GFP_ATOMIC); + if (!buf) { + usb_ep_free_request(&dcp->ep, req); + return; + } + + /* recip data is status */ + *buf = cpu_to_le16(status); + + /* allocated usb_request/buffer will be freed */ + req->complete = __usbhsg_recip_send_complete; + req->buf = buf; + req->length = sizeof(*buf); + req->zero = 0; + + /* push packet */ + pipe->handler = &usbhs_fifo_pio_push_handler; + usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req)); +} + +static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + unsigned short status = 0; + + if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED)) + status = 1 << USB_DEVICE_SELF_POWERED; + + __usbhsg_recip_send_status(gpriv, status); + + return 0; +} + +static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + unsigned short status = 0; + + __usbhsg_recip_send_status(gpriv, status); + + return 0; +} + +static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv, + struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + unsigned short status = 0; + + if (usbhs_pipe_is_stall(pipe)) + status = 1 << USB_ENDPOINT_HALT; + + __usbhsg_recip_send_status(gpriv, status); + + return 0; +} + +static struct usbhsg_recip_handle req_get_status = { + .name = "get status", + .device = usbhsg_recip_handler_std_get_device, + .interface = usbhsg_recip_handler_std_get_interface, + .endpoint = usbhsg_recip_handler_std_get_endpoint, +}; + +/* + * USB_TYPE handler + */ +static int usbhsg_recip_run_handle(struct usbhs_priv *priv, + struct usbhsg_recip_handle *handler, + struct usb_ctrlrequest *ctrl) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + struct usbhsg_uep *uep; + struct usbhs_pipe *pipe; + int recip = ctrl->bRequestType & USB_RECIP_MASK; + int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; + int ret = 0; + int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, + struct usb_ctrlrequest *ctrl); + char *msg; + + uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); + pipe = usbhsg_uep_to_pipe(uep); + if (!pipe) { + dev_err(dev, "wrong recip request\n"); + return -EINVAL; + } + + switch (recip) { + case USB_RECIP_DEVICE: + msg = "DEVICE"; + func = handler->device; + break; + case USB_RECIP_INTERFACE: + msg = "INTERFACE"; + func = handler->interface; + break; + case USB_RECIP_ENDPOINT: + msg = "ENDPOINT"; + func = handler->endpoint; + break; + default: + dev_warn(dev, "unsupported RECIP(%d)\n", recip); + func = NULL; + ret = -EINVAL; + } + + if (func) { + dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); + ret = func(priv, uep, ctrl); + } + + return ret; +} + +/* + * irq functions + * + * it will be called from usbhs_interrupt + */ +static int usbhsg_irq_dev_state(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + int state = usbhs_status_get_device_state(irq_state); + + gpriv->gadget.speed = usbhs_bus_get_speed(priv); + + dev_dbg(dev, "state = %x : speed : %d\n", state, gpriv->gadget.speed); + + if (gpriv->gadget.speed != USB_SPEED_UNKNOWN && + (state & SUSPENDED_STATE)) { + if (gpriv->driver && gpriv->driver->suspend) + gpriv->driver->suspend(&gpriv->gadget); + usb_gadget_set_state(&gpriv->gadget, USB_STATE_SUSPENDED); + } + + return 0; +} + +static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, + struct usbhs_irq_state *irq_state) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + struct usb_ctrlrequest ctrl; + struct usbhsg_recip_handle *recip_handler = NULL; + int stage = usbhs_status_get_ctrl_stage(irq_state); + int ret = 0; + + dev_dbg(dev, "stage = %d\n", stage); + + /* + * see Manual + * + * "Operation" + * - "Interrupt Function" + * - "Control Transfer Stage Transition Interrupt" + * - Fig. "Control Transfer Stage Transitions" + */ + + switch (stage) { + case READ_DATA_STAGE: + pipe->handler = &usbhs_fifo_pio_push_handler; + break; + case WRITE_DATA_STAGE: + pipe->handler = &usbhs_fifo_pio_pop_handler; + break; + case NODATA_STATUS_STAGE: + pipe->handler = &usbhs_ctrl_stage_end_handler; + break; + case READ_STATUS_STAGE: + case WRITE_STATUS_STAGE: + usbhs_dcp_control_transfer_done(pipe); + fallthrough; + default: + return ret; + } + + /* + * get usb request + */ + usbhs_usbreq_get_val(priv, &ctrl); + + switch (ctrl.bRequestType & USB_TYPE_MASK) { + case USB_TYPE_STANDARD: + switch (ctrl.bRequest) { + case USB_REQ_CLEAR_FEATURE: + recip_handler = &req_clear_feature; + break; + case USB_REQ_SET_FEATURE: + recip_handler = &req_set_feature; + break; + case USB_REQ_GET_STATUS: + recip_handler = &req_get_status; + break; + } + } + + /* + * setup stage / run recip + */ + if (recip_handler) + ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); + else + ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); + + if (ret < 0) + usbhs_pipe_stall(pipe); + + return ret; +} + +/* + * + * usb_dcp_ops + * + */ +static int usbhsg_pipe_disable(struct usbhsg_uep *uep) +{ + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usbhs_pkt *pkt; + + while (1) { + pkt = usbhs_pkt_pop(pipe, NULL); + if (!pkt) + break; + + usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN); + } + + usbhs_pipe_disable(pipe); + + return 0; +} + +/* + * + * usb_ep_ops + * + */ +static int usbhsg_ep_enable(struct usb_ep *ep, + const struct usb_endpoint_descriptor *desc) +{ + struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + struct usbhs_pipe *pipe; + int ret = -EIO; + unsigned long flags; + + usbhs_lock(priv, flags); + + /* + * if it already have pipe, + * nothing to do + */ + if (uep->pipe) { + usbhs_pipe_clear(uep->pipe); + usbhs_pipe_sequence_data0(uep->pipe); + ret = 0; + goto usbhsg_ep_enable_end; + } + + pipe = usbhs_pipe_malloc(priv, + usb_endpoint_type(desc), + usb_endpoint_dir_in(desc)); + if (pipe) { + uep->pipe = pipe; + pipe->mod_private = uep; + + /* set epnum / maxp */ + usbhs_pipe_config_update(pipe, 0, + usb_endpoint_num(desc), + usb_endpoint_maxp(desc)); + + /* + * usbhs_fifo_dma_push/pop_handler try to + * use dmaengine if possible. + * It will use pio handler if impossible. + */ + if (usb_endpoint_dir_in(desc)) { + pipe->handler = &usbhs_fifo_dma_push_handler; + } else { + pipe->handler = &usbhs_fifo_dma_pop_handler; + usbhs_xxxsts_clear(priv, BRDYSTS, + usbhs_pipe_number(pipe)); + } + + ret = 0; + } + +usbhsg_ep_enable_end: + usbhs_unlock(priv, flags); + + return ret; +} + +static int usbhsg_ep_disable(struct usb_ep *ep) +{ + struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); + struct usbhs_pipe *pipe; + unsigned long flags; + + spin_lock_irqsave(&uep->lock, flags); + pipe = usbhsg_uep_to_pipe(uep); + if (!pipe) + goto out; + + usbhsg_pipe_disable(uep); + usbhs_pipe_free(pipe); + + uep->pipe->mod_private = NULL; + uep->pipe = NULL; + +out: + spin_unlock_irqrestore(&uep->lock, flags); + + return 0; +} + +static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, + gfp_t gfp_flags) +{ + struct usbhsg_request *ureq; + + ureq = kzalloc(sizeof *ureq, gfp_flags); + if (!ureq) + return NULL; + + usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); + + return &ureq->req; +} + +static void usbhsg_ep_free_request(struct usb_ep *ep, + struct usb_request *req) +{ + struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); + + WARN_ON(!list_empty(&ureq->pkt.node)); + kfree(ureq); +} + +static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, + gfp_t gfp_flags) +{ + struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + + /* param check */ + if (usbhsg_is_not_connected(gpriv) || + unlikely(!gpriv->driver) || + unlikely(!pipe)) + return -ESHUTDOWN; + + usbhsg_queue_push(uep, ureq); + + return 0; +} + +static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) +{ + struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); + struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); + struct usbhs_pipe *pipe; + unsigned long flags; + + spin_lock_irqsave(&uep->lock, flags); + pipe = usbhsg_uep_to_pipe(uep); + if (pipe) + usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); + + /* + * To dequeue a request, this driver should call the usbhsg_queue_pop() + * even if the pipe is NULL. + */ + usbhsg_queue_pop(uep, ureq, -ECONNRESET); + spin_unlock_irqrestore(&uep->lock, flags); + + return 0; +} + +bool usbhs_pipe_contains_transmittable_data(struct usbhs_pipe *pipe); +static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) +{ + struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); + struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); + struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); + struct device *dev = usbhsg_gpriv_to_dev(gpriv); + unsigned long flags; + int ret = 0; + + dev_dbg(dev, "set halt %d (pipe %d)\n", + halt, usbhs_pipe_number(pipe)); + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + /* + * According to usb_ep_set_halt()'s description, this function should + * return -EAGAIN if the IN endpoint has any queue or data. Note + * that the usbhs_pipe_is_dir_in() returns false if the pipe is an + * IN endpoint in the gadget mode. + */ + if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) || + usbhs_pipe_contains_transmittable_data(pipe))) { + ret = -EAGAIN; + goto out; + } + + if (halt) + usbhs_pipe_stall(pipe); + else + usbhs_pipe_disable(pipe); + + if (halt && wedge) + usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); + else + usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); + +out: + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + return ret; +} + +static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) +{ + return __usbhsg_ep_set_halt_wedge(ep, value, 0); +} + +static int usbhsg_ep_set_wedge(struct usb_ep *ep) +{ + return __usbhsg_ep_set_halt_wedge(ep, 1, 1); +} + +static const struct usb_ep_ops usbhsg_ep_ops = { + .enable = usbhsg_ep_enable, + .disable = usbhsg_ep_disable, + + .alloc_request = usbhsg_ep_alloc_request, + .free_request = usbhsg_ep_free_request, + + .queue = usbhsg_ep_queue, + .dequeue = usbhsg_ep_dequeue, + + .set_halt = usbhsg_ep_set_halt, + .set_wedge = usbhsg_ep_set_wedge, +}; + +/* + * pullup control + */ +static int usbhsg_can_pullup(struct usbhs_priv *priv) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + + return gpriv->driver && + usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT); +} + +static void usbhsg_update_pullup(struct usbhs_priv *priv) +{ + if (usbhsg_can_pullup(priv)) + usbhs_sys_function_pullup(priv, 1); + else + usbhs_sys_function_pullup(priv, 0); +} + +/* + * usb module start/end + */ +static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + struct device *dev = usbhs_priv_to_dev(priv); + unsigned long flags; + int ret = 0; + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + usbhsg_status_set(gpriv, status); + if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && + usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) + ret = -1; /* not ready */ + + usbhs_unlock(priv, flags); + /******************** spin unlock ********************/ + + if (ret < 0) + return 0; /* not ready is not error */ + + /* + * enable interrupt and systems if ready + */ + dev_dbg(dev, "start gadget\n"); + + /* + * pipe initialize and enable DCP + */ + usbhs_fifo_init(priv); + usbhs_pipe_init(priv, + usbhsg_dma_map_ctrl); + + /* dcp init instead of usbhsg_ep_enable() */ + dcp->pipe = usbhs_dcp_malloc(priv); + dcp->pipe->mod_private = dcp; + usbhs_pipe_config_update(dcp->pipe, 0, 0, 64); + + /* + * system config enble + * - HI speed + * - function + * - usb module + */ + usbhs_sys_function_ctrl(priv, 1); + usbhsg_update_pullup(priv); + + /* + * enable irq callback + */ + mod->irq_dev_state = usbhsg_irq_dev_state; + mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; + usbhs_irq_callback_update(priv, mod); + + return 0; +} + +static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + struct usbhs_mod *mod = usbhs_mod_get_current(priv); + struct usbhsg_uep *uep; + struct device *dev = usbhs_priv_to_dev(priv); + unsigned long flags; + int ret = 0, i; + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + usbhsg_status_clr(gpriv, status); + if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && + !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) + ret = -1; /* already done */ + + usbhs_unlock(priv, flags); + /******************** spin unlock ********************/ + + if (ret < 0) + return 0; /* already done is not error */ + + /* + * disable interrupt and systems if 1st try + */ + usbhs_fifo_quit(priv); + + /* disable all irq */ + mod->irq_dev_state = NULL; + mod->irq_ctrl_stage = NULL; + usbhs_irq_callback_update(priv, mod); + + gpriv->gadget.speed = USB_SPEED_UNKNOWN; + + /* disable sys */ + usbhs_sys_set_test_mode(priv, 0); + usbhs_sys_function_ctrl(priv, 0); + + /* disable all eps */ + usbhsg_for_each_uep_with_dcp(uep, gpriv, i) + usbhsg_ep_disable(&uep->ep); + + dev_dbg(dev, "stop gadget\n"); + + return 0; +} + +/* + * VBUS provided by the PHY + */ +static void usbhs_mod_phy_mode(struct usbhs_priv *priv) +{ + struct usbhs_mod_info *info = &priv->mod_info; + + info->irq_vbus = NULL; + + usbhs_irq_callback_update(priv, NULL); +} + +/* + * + * linux usb function + * + */ +static int usbhsg_gadget_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + + if (!driver || !driver->setup) + return -EINVAL; + + /* get vbus using phy versions */ + usbhs_mod_phy_mode(priv); + + /* first hook up the driver ... */ + gpriv->driver = driver; + + return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); +} + +static int usbhsg_gadget_stop(struct usb_gadget *gadget) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + + usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); + + gpriv->driver = NULL; + + return 0; +} + +/* + * usb gadget ops + */ +static int usbhsg_get_frame(struct usb_gadget *gadget) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + + return usbhs_frame_get_num(priv); +} + +static int usbhsg_pullup(struct usb_gadget *gadget, int is_on) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + unsigned long flags; + + usbhs_lock(priv, flags); + if (is_on) + usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT); + else + usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT); + usbhsg_update_pullup(priv); + usbhs_unlock(priv, flags); + + return 0; +} + +static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + + if (is_self) + usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED); + else + usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED); + + return 0; +} + +static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + + gpriv->vbus_active = !!is_active; + + usbhsc_hotplug(priv); + + return 0; +} + +static const struct usb_gadget_ops usbhsg_gadget_ops = { + .get_frame = usbhsg_get_frame, + .set_selfpowered = usbhsg_set_selfpowered, + .udc_start = usbhsg_gadget_start, + .udc_stop = usbhsg_gadget_stop, + .pullup = usbhsg_pullup, + .vbus_session = usbhsg_vbus_session, +}; + +static int usbhsg_start(struct usbhs_priv *priv) +{ + return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); +} + +static int usbhsg_stop(struct usbhs_priv *priv) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + + /* cable disconnect */ + if (gpriv->driver && + gpriv->driver->disconnect) + gpriv->driver->disconnect(&gpriv->gadget); + + return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); +} + +int usbhs_mod_gadget_probe(struct usbhs_priv *priv) +{ + struct usbhsg_gpriv *gpriv; + struct usbhsg_uep *uep; + struct device *dev = usbhs_priv_to_dev(priv); + struct renesas_usbhs_driver_pipe_config *pipe_configs = + usbhs_get_dparam(priv, pipe_configs); + int pipe_size = usbhs_get_dparam(priv, pipe_size); + int i; + int ret; + + gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); + if (!gpriv) + return -ENOMEM; + + uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL); + if (!uep) { + ret = -ENOMEM; + goto usbhs_mod_gadget_probe_err_gpriv; + } + + /* + * CAUTION + * + * There is no guarantee that it is possible to access usb module here. + * Don't accesses to it. + * The accesse will be enable after "usbhsg_start" + */ + + /* + * register itself + */ + usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); + + /* init gpriv */ + gpriv->mod.name = "gadget"; + gpriv->mod.start = usbhsg_start; + gpriv->mod.stop = usbhsg_stop; + gpriv->uep = uep; + gpriv->uep_size = pipe_size; + usbhsg_status_init(gpriv); + + /* + * init gadget + */ + gpriv->gadget.dev.parent = dev; + gpriv->gadget.name = "renesas_usbhs_udc"; + gpriv->gadget.ops = &usbhsg_gadget_ops; + gpriv->gadget.max_speed = USB_SPEED_HIGH; + + INIT_LIST_HEAD(&gpriv->gadget.ep_list); + + /* + * init usb_ep + */ + usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { + uep->gpriv = gpriv; + uep->pipe = NULL; + snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); + + uep->ep.name = uep->ep_name; + uep->ep.ops = &usbhsg_ep_ops; + INIT_LIST_HEAD(&uep->ep.ep_list); + spin_lock_init(&uep->lock); + + /* init DCP */ + if (usbhsg_is_dcp(uep)) { + gpriv->gadget.ep0 = &uep->ep; + usb_ep_set_maxpacket_limit(&uep->ep, 64); + uep->ep.caps.type_control = true; + } else { + /* init normal pipe */ + if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC) + uep->ep.caps.type_iso = true; + if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK) + uep->ep.caps.type_bulk = true; + if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT) + uep->ep.caps.type_int = true; + usb_ep_set_maxpacket_limit(&uep->ep, + pipe_configs[i].bufsize); + list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); + } + uep->ep.caps.dir_in = true; + uep->ep.caps.dir_out = true; + } + + ret = usb_add_gadget_udc(dev, &gpriv->gadget); + if (ret) + goto err_add_udc; + + + dev_info(dev, "gadget probed\n"); + + return 0; + +err_add_udc: + kfree(gpriv->uep); + +usbhs_mod_gadget_probe_err_gpriv: + kfree(gpriv); + + return ret; +} + +void usbhs_mod_gadget_remove(struct usbhs_priv *priv) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + + usb_del_gadget_udc(&gpriv->gadget); + + kfree(gpriv->uep); + kfree(gpriv); +} + +struct usb_gadget *usbhsg_get_gadget(struct usbhs_priv *priv) +{ + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + return &gpriv->gadget; +} diff --git a/drivers/usb/gadget/rcar/pipe.c b/drivers/usb/gadget/rcar/pipe.c new file mode 100644 index 00000000000..a2b24f38144 --- /dev/null +++ b/drivers/usb/gadget/rcar/pipe.c @@ -0,0 +1,849 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#include <linux/delay.h> +#include "common.h" +#include "pipe.h" + +/* + * macros + */ +#define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2) + +#define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0) + +/* + * for debug + */ +static char *usbhsp_pipe_name[] = { + [USB_ENDPOINT_XFER_CONTROL] = "DCP", + [USB_ENDPOINT_XFER_BULK] = "BULK", + [USB_ENDPOINT_XFER_INT] = "INT", + [USB_ENDPOINT_XFER_ISOC] = "ISO", +}; + +char *usbhs_pipe_name(struct usbhs_pipe *pipe) +{ + return usbhsp_pipe_name[usbhs_pipe_type(pipe)]; +} + +static struct renesas_usbhs_driver_pipe_config +*usbhsp_get_pipe_config(struct usbhs_priv *priv, int pipe_num) +{ + struct renesas_usbhs_driver_pipe_config *pipe_configs = + usbhs_get_dparam(priv, pipe_configs); + + return &pipe_configs[pipe_num]; +} + +/* + * DCPCTR/PIPEnCTR functions + */ +static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int offset = usbhsp_addr_offset(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + usbhs_bset(priv, DCPCTR, mask, val); + else + usbhs_bset(priv, PIPEnCTR + offset, mask, val); +} + +static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int offset = usbhsp_addr_offset(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + return usbhs_read(priv, DCPCTR); + else + return usbhs_read(priv, PIPEnCTR + offset); +} + +/* + * DCP/PIPE functions + */ +static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe, + u16 dcp_reg, u16 pipe_reg, + u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + usbhs_bset(priv, dcp_reg, mask, val); + else + usbhs_bset(priv, pipe_reg, mask, val); +} + +static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe, + u16 dcp_reg, u16 pipe_reg) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + return usbhs_read(priv, dcp_reg); + else + return usbhs_read(priv, pipe_reg); +} + +/* + * DCPCFG/PIPECFG functions + */ +static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val); +} + +static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe) +{ + return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG); +} + +/* + * PIPEnTRN/PIPEnTRE functions + */ +static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int num = usbhs_pipe_number(pipe); + u16 reg; + + /* + * It is impossible to calculate address, + * since PIPEnTRN addresses were mapped randomly. + */ +#define CASE_PIPExTRN(a) \ + case 0x ## a: \ + reg = PIPE ## a ## TRN; \ + break; + + switch (num) { + CASE_PIPExTRN(1); + CASE_PIPExTRN(2); + CASE_PIPExTRN(3); + CASE_PIPExTRN(4); + CASE_PIPExTRN(5); + CASE_PIPExTRN(B); + CASE_PIPExTRN(C); + CASE_PIPExTRN(D); + CASE_PIPExTRN(E); + CASE_PIPExTRN(F); + CASE_PIPExTRN(9); + CASE_PIPExTRN(A); + default: + dev_err(dev, "unknown pipe (%d)\n", num); + return; + } + __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); +} + +static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int num = usbhs_pipe_number(pipe); + u16 reg; + + /* + * It is impossible to calculate address, + * since PIPEnTRE addresses were mapped randomly. + */ +#define CASE_PIPExTRE(a) \ + case 0x ## a: \ + reg = PIPE ## a ## TRE; \ + break; + + switch (num) { + CASE_PIPExTRE(1); + CASE_PIPExTRE(2); + CASE_PIPExTRE(3); + CASE_PIPExTRE(4); + CASE_PIPExTRE(5); + CASE_PIPExTRE(B); + CASE_PIPExTRE(C); + CASE_PIPExTRE(D); + CASE_PIPExTRE(E); + CASE_PIPExTRE(F); + CASE_PIPExTRE(9); + CASE_PIPExTRE(A); + default: + dev_err(dev, "unknown pipe (%d)\n", num); + return; + } + + __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); +} + +/* + * PIPEBUF + */ +static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + if (usbhs_pipe_is_dcp(pipe)) + return; + + __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val); +} + +/* + * DCPMAXP/PIPEMAXP + */ +static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val); +} + +/* + * pipe control functions + */ +static void usbhsp_pipe_select(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + /* + * On pipe, this is necessary before + * accesses to below registers. + * + * PIPESEL : usbhsp_pipe_select + * PIPECFG : usbhsp_pipe_cfg_xxx + * PIPEBUF : usbhsp_pipe_buf_xxx + * PIPEMAXP : usbhsp_pipe_maxp_xxx + * PIPEPERI + */ + + /* + * if pipe is dcp, no pipe is selected. + * it is no problem, because dcp have its register + */ + usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe)); +} + +static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int timeout = 1024; + u16 mask = usbhs_mod_is_host(priv) ? (CSSTS | PID_MASK) : PID_MASK; + + /* + * make sure.... + * + * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is + * specified by the CURPIPE bits. + * When changing the setting of this bit after changing + * the PID bits for the selected pipe from BUF to NAK, + * check that CSSTS = 0 and PBUSY = 0. + */ + + /* + * CURPIPE bit = 0 + * + * see also + * "Operation" + * - "Pipe Control" + * - "Pipe Control Registers Switching Procedure" + */ + usbhs_write(priv, CFIFOSEL, 0); + usbhs_pipe_disable(pipe); + + do { + if (!(usbhsp_pipectrl_get(pipe) & mask)) + return 0; + + udelay(10); + + } while (timeout--); + + return -EBUSY; +} + +int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) +{ + u16 val; + + val = usbhsp_pipectrl_get(pipe); + if (val & BSTS) + return 0; + + return -EBUSY; +} + +bool usbhs_pipe_contains_transmittable_data(struct usbhs_pipe *pipe) +{ + u16 val; + + /* Do not support for DCP pipe */ + if (usbhs_pipe_is_dcp(pipe)) + return false; + + val = usbhsp_pipectrl_get(pipe); + if (val & INBUFM) + return true; + + return false; +} + +/* + * PID ctrl + */ +static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe); + + pid &= PID_MASK; + + /* + * see + * "Pipe n Control Register" - "PID" + */ + switch (pid) { + case PID_STALL11: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); + fallthrough; + case PID_STALL10: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); + } +} + +void usbhs_pipe_disable(struct usbhs_pipe *pipe) +{ + int timeout = 1024; + u16 val; + + /* see "Pipe n Control Register" - "PID" */ + __usbhsp_pid_try_nak_if_stall(pipe); + + usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); + + do { + val = usbhsp_pipectrl_get(pipe); + val &= PBUSY; + if (!val) + break; + + udelay(10); + } while (timeout--); +} + +void usbhs_pipe_enable(struct usbhs_pipe *pipe) +{ + /* see "Pipe n Control Register" - "PID" */ + __usbhsp_pid_try_nak_if_stall(pipe); + + usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); +} + +void usbhs_pipe_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe); + + pid &= PID_MASK; + + /* + * see + * "Pipe n Control Register" - "PID" + */ + switch (pid) { + case PID_NAK: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); + break; + case PID_BUF: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); + break; + } +} + +int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; + + return (int)(pid == PID_STALL10 || pid == PID_STALL11); +} + +void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) +{ + if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + return; + + /* + * clear and disable transfer counter for IN/OUT pipe + */ + usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); + + /* + * Only IN direction bulk pipe can use transfer count. + * Without using this function, + * received data will break if it was large data size. + * see PIPEnTRN/PIPEnTRE for detail + */ + if (usbhs_pipe_is_dir_in(pipe)) { + int maxp = usbhs_pipe_get_maxpacket(pipe); + + usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); + usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ + } +} + + +/* + * pipe setup + */ +static int usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, int is_host, + int dir_in, u16 *pipecfg) +{ + u16 type = 0; + u16 bfre = 0; + u16 dblb = 0; + u16 cntmd = 0; + u16 dir = 0; + u16 epnum = 0; + u16 shtnak = 0; + static const u16 type_array[] = { + [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, + [USB_ENDPOINT_XFER_INT] = TYPE_INT, + [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, + }; + + if (usbhs_pipe_is_dcp(pipe)) + return -EINVAL; + + /* + * PIPECFG + * + * see + * - "Register Descriptions" - "PIPECFG" register + * - "Features" - "Pipe configuration" + * - "Operation" - "Pipe Control" + */ + + /* TYPE */ + type = type_array[usbhs_pipe_type(pipe)]; + + /* BFRE */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + bfre = 0; /* FIXME */ + + /* DBLB: see usbhs_pipe_config_update() */ + + /* CNTMD */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + cntmd = 0; /* FIXME */ + + /* DIR */ + if (dir_in) + usbhsp_flags_set(pipe, IS_DIR_HOST); + + if (!!is_host ^ !!dir_in) + dir |= DIR_OUT; + + if (!dir) + usbhsp_flags_set(pipe, IS_DIR_IN); + + /* SHTNAK */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && + !dir) + shtnak = SHTNAK; + + /* EPNUM */ + epnum = 0; /* see usbhs_pipe_config_update() */ + *pipecfg = type | + bfre | + dblb | + cntmd | + dir | + shtnak | + epnum; + return 0; +} + +static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int pipe_num = usbhs_pipe_number(pipe); + u16 buff_size; + u16 bufnmb; + u16 bufnmb_cnt; + struct renesas_usbhs_driver_pipe_config *pipe_config = + usbhsp_get_pipe_config(priv, pipe_num); + + /* + * PIPEBUF + * + * see + * - "Register Descriptions" - "PIPEBUF" register + * - "Features" - "Pipe configuration" + * - "Operation" - "FIFO Buffer Memory" + * - "Operation" - "Pipe Control" + */ + buff_size = pipe_config->bufsize; + bufnmb = pipe_config->bufnum; + + /* change buff_size to register value */ + bufnmb_cnt = (buff_size / 64) - 1; + + dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", + pipe_num, buff_size, bufnmb); + + return (0x1f & bufnmb_cnt) << 10 | + (0xff & bufnmb) << 0; +} + +void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, + u16 epnum, u16 maxp) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int pipe_num = usbhs_pipe_number(pipe); + struct renesas_usbhs_driver_pipe_config *pipe_config = + usbhsp_get_pipe_config(priv, pipe_num); + u16 dblb = pipe_config->double_buf ? DBLB : 0; + + if (devsel > 0xA) { + struct device *dev = usbhs_priv_to_dev(priv); + + dev_err(dev, "devsel error %d\n", devsel); + + devsel = 0; + } + + usbhsp_pipe_barrier(pipe); + + pipe->maxp = maxp; + + usbhsp_pipe_select(pipe); + usbhsp_pipe_maxp_set(pipe, 0xFFFF, + (devsel << 12) | + maxp); + + if (!usbhs_pipe_is_dcp(pipe)) + usbhsp_pipe_cfg_set(pipe, 0x000F | DBLB, epnum | dblb); +} + +/* + * pipe control + */ +int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) +{ + /* + * see + * usbhs_pipe_config_update() + * usbhs_dcp_malloc() + */ + return pipe->maxp; +} + +int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_DIR_IN); +} + +int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_DIR_HOST); +} + +int usbhs_pipe_is_running(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_RUNNING); +} + +void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) +{ + if (running) + usbhsp_flags_set(pipe, IS_RUNNING); + else + usbhsp_flags_clr(pipe, IS_RUNNING); +} + +void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) +{ + u16 mask = (SQCLR | SQSET); + u16 val; + + /* + * sequence + * 0 : data0 + * 1 : data1 + * -1 : no change + */ + switch (sequence) { + case 0: + val = SQCLR; + break; + case 1: + val = SQSET; + break; + default: + return; + } + + usbhsp_pipectrl_set(pipe, mask, val); +} + +static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) +{ + return !!(usbhsp_pipectrl_get(pipe) & SQMON); +} + +void usbhs_pipe_clear(struct usbhs_pipe *pipe) +{ + if (usbhs_pipe_is_dcp(pipe)) { + usbhs_fifo_clear_dcp(pipe); + } else { + usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); + usbhsp_pipectrl_set(pipe, ACLRM, 0); + } +} + +/* Should call usbhsp_pipe_select() before */ +void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe, + int needs_bfre, int bfre_enable) +{ + int sequence; + + usbhsp_pipe_select(pipe); + sequence = usbhs_pipe_get_data_sequence(pipe); + if (needs_bfre) + usbhsp_pipe_cfg_set(pipe, BFRE, bfre_enable ? BFRE : 0); + usbhs_pipe_clear(pipe); + usbhs_pipe_data_sequence(pipe, sequence); +} + +void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) +{ + if (usbhs_pipe_is_dcp(pipe)) + return; + + usbhsp_pipe_select(pipe); + /* check if the driver needs to change the BFRE value */ + if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) + return; + + usbhs_pipe_clear_without_sequence(pipe, 1, enable); +} + +static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) +{ + struct usbhs_pipe *pos, *pipe; + int i; + + /* + * find target pipe + */ + pipe = NULL; + usbhs_for_each_pipe_with_dcp(pos, priv, i) { + if (!usbhs_pipe_type_is(pos, type)) + continue; + if (usbhsp_flags_has(pos, IS_USED)) + continue; + + pipe = pos; + break; + } + + if (!pipe) + return NULL; + + /* + * initialize pipe flags + */ + usbhsp_flags_init(pipe); + usbhsp_flags_set(pipe, IS_USED); + + return pipe; +} + +static void usbhsp_put_pipe(struct usbhs_pipe *pipe) +{ + usbhsp_flags_init(pipe); +} + +void usbhs_pipe_init(struct usbhs_priv *priv, + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + struct usbhs_pipe *pipe; + int i; + + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + usbhsp_flags_init(pipe); + pipe->fifo = NULL; + pipe->mod_private = NULL; + INIT_LIST_HEAD(&pipe->list); + + /* pipe force init */ + usbhs_pipe_clear(pipe); + } + + info->dma_map_ctrl = dma_map_ctrl; +} + +struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, + int endpoint_type, + int dir_in) +{ + struct device *dev = usbhs_priv_to_dev(priv); + struct usbhs_pipe *pipe; + int is_host = usbhs_mod_is_host(priv); + int ret; + u16 pipecfg, pipebuf; + + pipe = usbhsp_get_pipe(priv, endpoint_type); + if (!pipe) { + dev_err(dev, "can't get pipe (%s)\n", + usbhsp_pipe_name[endpoint_type]); + return NULL; + } + + INIT_LIST_HEAD(&pipe->list); + + usbhs_pipe_disable(pipe); + + /* make sure pipe is not busy */ + ret = usbhsp_pipe_barrier(pipe); + if (ret < 0) { + dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); + return NULL; + } + + if (usbhsp_setup_pipecfg(pipe, is_host, dir_in, &pipecfg)) { + dev_err(dev, "can't setup pipe\n"); + return NULL; + } + + pipebuf = usbhsp_setup_pipebuff(pipe); + + usbhsp_pipe_select(pipe); + usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); + usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); + usbhs_pipe_clear(pipe); + + usbhs_pipe_sequence_data0(pipe); + + dev_dbg(dev, "enable pipe %d : %s (%s)\n", + usbhs_pipe_number(pipe), + usbhs_pipe_name(pipe), + usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); + + /* + * epnum / maxp are still not set to this pipe. + * call usbhs_pipe_config_update() after this function !! + */ + + return pipe; +} + +void usbhs_pipe_free(struct usbhs_pipe *pipe) +{ + usbhsp_pipe_select(pipe); + usbhsp_pipe_cfg_set(pipe, 0xFFFF, 0); + usbhsp_put_pipe(pipe); +} + +void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) +{ + if (pipe->fifo) + pipe->fifo->pipe = NULL; + + pipe->fifo = fifo; + + if (fifo) + fifo->pipe = pipe; +} + + +/* + * dcp control + */ +struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) +{ + struct usbhs_pipe *pipe; + + pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); + if (!pipe) + return NULL; + + INIT_LIST_HEAD(&pipe->list); + + /* + * call usbhs_pipe_config_update() after this function !! + */ + + return pipe; +} + +void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + WARN_ON(!usbhs_pipe_is_dcp(pipe)); + + usbhs_pipe_enable(pipe); + + if (!usbhs_mod_is_host(priv)) /* funconly */ + usbhsp_pipectrl_set(pipe, CCPL, CCPL); +} + +void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) +{ + usbhsp_pipe_cfg_set(pipe, DIR_OUT, + dir_out ? DIR_OUT : 0); +} + +/* + * pipe module function + */ +int usbhs_pipe_probe(struct usbhs_priv *priv) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + struct usbhs_pipe *pipe; + struct device *dev = usbhs_priv_to_dev(priv); + struct renesas_usbhs_driver_pipe_config *pipe_configs = + usbhs_get_dparam(priv, pipe_configs); + int pipe_size = usbhs_get_dparam(priv, pipe_size); + int i; + + /* This driver expects 1st pipe is DCP */ + if (pipe_configs[0].type != USB_ENDPOINT_XFER_CONTROL) { + dev_err(dev, "1st PIPE is not DCP\n"); + return -EINVAL; + } + + info->pipe = kcalloc(pipe_size, sizeof(struct usbhs_pipe), + GFP_KERNEL); + if (!info->pipe) + return -ENOMEM; + + info->size = pipe_size; + + /* + * init pipe + */ + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + pipe->priv = priv; + + usbhs_pipe_type(pipe) = + pipe_configs[i].type & USB_ENDPOINT_XFERTYPE_MASK; + + dev_dbg(dev, "pipe %x\t: %s\n", + i, usbhsp_pipe_name[pipe_configs[i].type]); + } + + return 0; +} + +void usbhs_pipe_remove(struct usbhs_priv *priv) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + + kfree(info->pipe); +} diff --git a/drivers/usb/gadget/rcar/pipe.h b/drivers/usb/gadget/rcar/pipe.h new file mode 100644 index 00000000000..01c15178a28 --- /dev/null +++ b/drivers/usb/gadget/rcar/pipe.h @@ -0,0 +1,114 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + */ +#ifndef RENESAS_USB_PIPE_H +#define RENESAS_USB_PIPE_H + +#include "common.h" +#include "fifo.h" + +/* + * struct + */ +struct usbhs_pipe { + u32 pipe_type; /* USB_ENDPOINT_XFER_xxx */ + + struct usbhs_priv *priv; + struct usbhs_fifo *fifo; + struct list_head list; + + int maxp; + + u32 flags; +#define USBHS_PIPE_FLAGS_IS_USED (1 << 0) +#define USBHS_PIPE_FLAGS_IS_DIR_IN (1 << 1) +#define USBHS_PIPE_FLAGS_IS_DIR_HOST (1 << 2) +#define USBHS_PIPE_FLAGS_IS_RUNNING (1 << 3) + + const struct usbhs_pkt_handle *handler; + + void *mod_private; +}; + +struct usbhs_pipe_info { + struct usbhs_pipe *pipe; + int size; /* array size of "pipe" */ + + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map); +}; + +/* + * pipe list + */ +#define __usbhs_for_each_pipe(start, pos, info, i) \ + for ((i) = start; \ + ((i) < (info)->size) && ((pos) = (info)->pipe + (i)); \ + (i)++) + +#define usbhs_for_each_pipe(pos, priv, i) \ + __usbhs_for_each_pipe(1, pos, &((priv)->pipe_info), i) + +#define usbhs_for_each_pipe_with_dcp(pos, priv, i) \ + __usbhs_for_each_pipe(0, pos, &((priv)->pipe_info), i) + +/* + * data + */ +#define usbhs_priv_to_pipeinfo(pr) (&(pr)->pipe_info) + +/* + * pipe control + */ +char *usbhs_pipe_name(struct usbhs_pipe *pipe); +struct usbhs_pipe +*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in); +void usbhs_pipe_free(struct usbhs_pipe *pipe); +int usbhs_pipe_probe(struct usbhs_priv *priv); +void usbhs_pipe_remove(struct usbhs_priv *priv); +int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe); +int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe); +int usbhs_pipe_is_running(struct usbhs_pipe *pipe); +void usbhs_pipe_running(struct usbhs_pipe *pipe, int running); + +void usbhs_pipe_init(struct usbhs_priv *priv, + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)); +int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe); +void usbhs_pipe_clear(struct usbhs_pipe *pipe); +void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe, + int needs_bfre, int bfre_enable); +int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe); +void usbhs_pipe_enable(struct usbhs_pipe *pipe); +void usbhs_pipe_disable(struct usbhs_pipe *pipe); +void usbhs_pipe_stall(struct usbhs_pipe *pipe); +int usbhs_pipe_is_stall(struct usbhs_pipe *pipe); +void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len); +void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo); +void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, + u16 epnum, u16 maxp); +void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable); + +#define usbhs_pipe_sequence_data0(pipe) usbhs_pipe_data_sequence(pipe, 0) +#define usbhs_pipe_sequence_data1(pipe) usbhs_pipe_data_sequence(pipe, 1) +void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data); + +#define usbhs_pipe_to_priv(p) ((p)->priv) +#define usbhs_pipe_number(p) (int)((p) - (p)->priv->pipe_info.pipe) +#define usbhs_pipe_is_dcp(p) ((p)->priv->pipe_info.pipe == (p)) +#define usbhs_pipe_to_fifo(p) ((p)->fifo) +#define usbhs_pipe_is_busy(p) usbhs_pipe_to_fifo(p) + +#define usbhs_pipe_type(p) ((p)->pipe_type) +#define usbhs_pipe_type_is(p, t) ((p)->pipe_type == t) + +/* + * dcp control + */ +struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv); +void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe); +void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out); + +#endif /* RENESAS_USB_PIPE_H */ diff --git a/drivers/usb/gadget/rcar/renesas_usb.h b/drivers/usb/gadget/rcar/renesas_usb.h new file mode 100644 index 00000000000..8155e3dcaf6 --- /dev/null +++ b/drivers/usb/gadget/rcar/renesas_usb.h @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * Ported to u-boot + * Copyright (C) 2016 GlobalLogic + */ +#ifndef RENESAS_USB_H +#define RENESAS_USB_H + +#include <linux/usb/ch9.h> +#include <linux/compat.h> + +struct platform_device { + const char *name; + struct device dev; +}; + +/* + * module type + * + * it will be return value from get_id + */ +enum { + USBHS_HOST = 0, + USBHS_GADGET, + USBHS_MAX, +}; + +/* + * parameters for renesas usbhs + * + * some register needs USB chip specific parameters. + * This struct show it to driver + */ + +struct renesas_usbhs_driver_pipe_config { + u8 type; /* USB_ENDPOINT_XFER_xxx */ + u16 bufsize; + u8 bufnum; + bool double_buf; +}; +#define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf) { \ + .type = (_type), \ + .bufsize = (_size), \ + .bufnum = (_num), \ + .double_buf = (_double_buf), \ + } + +struct renesas_usbhs_driver_param { + /* + * pipe settings + */ + struct renesas_usbhs_driver_pipe_config *pipe_configs; + int pipe_size; /* pipe_configs array size */ + + /* + * option: + * + * for BUSWAIT :: BWAIT + * see + * renesas_usbhs/common.c :: usbhsc_set_buswait() + * */ + int buswait_bwait; + + /* + * option: + * + * delay time from notify_hotplug callback + */ + int detection_delay; /* msec */ + + /* + * option: + * + * dma id for dmaengine + * The data transfer direction on D0FIFO/D1FIFO should be + * fixed for keeping consistency. + * So, the platform id settings will be.. + * .d0_tx_id = xx_TX, + * .d1_rx_id = xx_RX, + * or + * .d1_tx_id = xx_TX, + * .d0_rx_id = xx_RX, + */ + int d0_tx_id; + int d0_rx_id; + int d1_tx_id; + int d1_rx_id; + int d2_tx_id; + int d2_rx_id; + int d3_tx_id; + int d3_rx_id; + + /* + * option: + * + * pio <--> dma border. + */ + int pio_dma_border; /* default is 64byte */ + + uintptr_t type; + u32 enable_gpio; + + /* + * option: + */ + u32 has_otg:1; /* for controlling PWEN/EXTLP */ + u32 has_sudmac:1; /* for SUDMAC */ + u32 has_usb_dmac:1; /* for USB-DMAC */ + u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */ +#define USBHS_USB_DMAC_XFER_SIZE 32 /* hardcode the xfer size */ + u32 multi_clks:1; + u32 has_new_pipe_configs:1; +}; + +#define USBHS_TYPE_RCAR_GEN3 2 + +struct usbhs_priv; +struct usb_gadget *usbhsg_get_gadget(struct usbhs_priv *priv); + +#endif /* RENESAS_USB_H */ diff --git a/include/dfu.h b/include/dfu.h index 6c5431b3948..e25588c33cb 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -517,6 +517,7 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, #endif extern bool dfu_reinit_needed; +extern bool dfu_alt_info_changed; #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) /** diff --git a/include/env_callback.h b/include/env_callback.h index 8e500aaaf80..66cc8309e71 100644 --- a/include/env_callback.h +++ b/include/env_callback.h @@ -69,6 +69,12 @@ #define BOOTSTD_CALLBACK #endif +#ifdef CONFIG_DFU +#define DFU_CALLBACK "dfu_alt_info:dfu_alt_info," +#else +#define DFU_CALLBACK +#endif + /* * This list of callback bindings is static, but may be overridden by defining * a new association in the ".callbacks" environment variable. @@ -79,6 +85,7 @@ NET_CALLBACKS \ NET6_CALLBACKS \ BOOTSTD_CALLBACK \ + DFU_CALLBACK \ "loadaddr:loadaddr," \ SILENT_CALLBACK \ "stdin:console,stdout:console,stderr:console," \ |