diff options
27 files changed, 1975 insertions, 47 deletions
@@ -1409,6 +1409,12 @@ The following options need to be configured: CONFIG_DFU_NAND This enables support for exposing NAND devices via DFU. + CONFIG_DFU_RAM + This enables support for exposing RAM via DFU. + Note: DFU spec refer to non-volatile memory usage, but + allow usages beyond the scope of spec - here RAM usage, + one that would help mostly the developer. + CONFIG_SYS_DFU_DATA_BUF_SIZE Dfu transfer uses a buffer before writing data to the raw storage device. Make the size (in bytes) of this buffer diff --git a/arch/arm/cpu/armv7/at91/sama5d3_devices.c b/arch/arm/cpu/armv7/at91/sama5d3_devices.c index e55e1c6..51f0a6d 100644 --- a/arch/arm/cpu/armv7/at91/sama5d3_devices.c +++ b/arch/arm/cpu/armv7/at91/sama5d3_devices.c @@ -202,3 +202,15 @@ void at91_lcd_hw_init(void) at91_periph_clk_enable(ATMEL_ID_LCDC); } #endif + +#ifdef CONFIG_USB_GADGET_ATMEL_USBA +void at91_udp_hw_init(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + /* Enable UPLL clock */ + writel(AT91_PMC_UPLLEN | AT91_PMC_BIASEN, &pmc->uckr); + /* Enable UDPHS clock */ + at91_periph_clk_enable(ATMEL_ID_UDPHS); +} +#endif diff --git a/arch/arm/include/asm/arch-at91/at91_common.h b/arch/arm/include/asm/arch-at91/at91_common.h index 9f54fdd..abcb97d 100644 --- a/arch/arm/include/asm/arch-at91/at91_common.h +++ b/arch/arm/include/asm/arch-at91/at91_common.h @@ -19,6 +19,7 @@ void at91_serial2_hw_init(void); void at91_seriald_hw_init(void); void at91_spi0_hw_init(unsigned long cs_mask); void at91_spi1_hw_init(unsigned long cs_mask); +void at91_udp_hw_init(void); void at91_uhp_hw_init(void); void at91_lcd_hw_init(void); diff --git a/arch/arm/include/asm/arch-at91/atmel_usba_udc.h b/arch/arm/include/asm/arch-at91/atmel_usba_udc.h new file mode 100644 index 0000000..6f540d2 --- /dev/null +++ b/arch/arm/include/asm/arch-at91/atmel_usba_udc.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2005-2013 Atmel Corporation + * Bo Shen <voice.shen@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ATMEL_USBA_UDC_H__ +#define __ATMEL_USBA_UDC_H__ + +#include <linux/usb/atmel_usba_udc.h> + +#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \ + [idx] = { \ + .name = nam, \ + .index = idx, \ + .fifo_size = maxpkt, \ + .nr_banks = maxbk, \ + .can_dma = dma, \ + .can_isoc = isoc, \ + } + +#if defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \ + defined(CONFIG_AT91SAM9X5) +static struct usba_ep_data usba_udc_ep[] = { + EP("ep0", 0, 64, 1, 0, 0), + EP("ep1", 1, 1024, 2, 1, 1), + EP("ep2", 2, 1024, 2, 1, 1), + EP("ep3", 3, 1024, 3, 1, 0), + EP("ep4", 4, 1024, 3, 1, 0), + EP("ep5", 5, 1024, 3, 1, 1), + EP("ep6", 6, 1024, 3, 1, 1), +}; +#elif defined(CONFIG_SAMA5D3) +static struct usba_ep_data usba_udc_ep[] = { + EP("ep0", 0, 64, 1, 0, 0), + EP("ep1", 1, 1024, 3, 1, 0), + EP("ep2", 2, 1024, 3, 1, 0), + EP("ep3", 3, 1024, 2, 1, 0), + EP("ep4", 4, 1024, 2, 1, 0), + EP("ep5", 5, 1024, 2, 1, 0), + EP("ep6", 6, 1024, 2, 1, 0), + EP("ep7", 7, 1024, 2, 1, 0), + EP("ep8", 8, 1024, 2, 0, 0), + EP("ep9", 9, 1024, 2, 0, 0), + EP("ep10", 10, 1024, 2, 0, 0), + EP("ep11", 11, 1024, 2, 0, 0), + EP("ep12", 12, 1024, 2, 0, 0), + EP("ep13", 13, 1024, 2, 0, 0), + EP("ep14", 14, 1024, 2, 0, 0), + EP("ep15", 15, 1024, 2, 0, 0), +}; +#else +# error "NO usba_udc_ep defined" +#endif + +#undef EP + +struct usba_platform_data pdata = { + .num_ep = ARRAY_SIZE(usba_udc_ep), + .ep = usba_udc_ep, +}; + +#endif diff --git a/arch/arm/include/asm/arch-at91/sama5d3.h b/arch/arm/include/asm/arch-at91/sama5d3.h index fefee5e..123a627 100644 --- a/arch/arm/include/asm/arch-at91/sama5d3.h +++ b/arch/arm/include/asm/arch-at91/sama5d3.h @@ -120,7 +120,7 @@ #define ATMEL_BASE_USART3 0xf8024000 #define ATMEL_BASE_UART1 0xf8028000 #define ATMEL_BASE_EMAC 0xf802c000 -#define ATMEL_BASE_UDHPS 0xf8030000 +#define ATMEL_BASE_UDPHS 0xf8030000 #define ATMEL_BASE_SHA 0xf8034000 #define ATMEL_BASE_AES 0xf8038000 #define ATMEL_BASE_TDES 0xf803c000 diff --git a/board/atmel/sama5d3xek/sama5d3xek.c b/board/atmel/sama5d3xek/sama5d3xek.c index 97caf64..b0965ef 100644 --- a/board/atmel/sama5d3xek/sama5d3xek.c +++ b/board/atmel/sama5d3xek/sama5d3xek.c @@ -21,6 +21,10 @@ #include <net.h> #include <netdev.h> +#ifdef CONFIG_USB_GADGET_ATMEL_USBA +#include <asm/arch/atmel_usba_udc.h> +#endif + DECLARE_GLOBAL_DATA_PTR; /* ------------------------------------------------------------------------- */ @@ -170,6 +174,9 @@ int board_init(void) #ifdef CONFIG_CMD_USB sama5d3xek_usb_hw_init(); #endif +#ifdef CONFIG_USB_GADGET_ATMEL_USBA + at91_udp_hw_init(); +#endif #ifdef CONFIG_GENERIC_ATMEL_MCI sama5d3xek_mci_hw_init(); #endif @@ -221,6 +228,12 @@ int board_eth_init(bd_t *bis) if (has_gmac()) rc = macb_eth_initialize(0, (void *)ATMEL_BASE_GMAC, 0x00); #endif +#ifdef CONFIG_USB_GADGET_ATMEL_USBA + usba_udc_probe(&pdata); +#ifdef CONFIG_USB_ETH_RNDIS + usb_eth_initialize(bis); +#endif +#endif return rc; } diff --git a/common/cmd_dfu.c b/common/cmd_dfu.c index 793c422..7ce92ce 100644 --- a/common/cmd_dfu.c +++ b/common/cmd_dfu.c @@ -9,34 +9,20 @@ */ #include <common.h> -#include <command.h> -#include <malloc.h> #include <dfu.h> -#include <asm/errno.h> #include <g_dnl.h> static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - const char *str_env; char *s = "dfu"; int ret, i = 0; - char *env_bkp; if (argc < 3) return CMD_RET_USAGE; - str_env = getenv("dfu_alt_info"); - if (str_env == NULL) { - printf("%s: \"dfu_alt_info\" env variable not defined!\n", - __func__); - return CMD_RET_FAILURE; - } - - env_bkp = strdup(str_env); - ret = dfu_config_entities(env_bkp, argv[1], - (int)simple_strtoul(argv[2], NULL, 10)); + ret = dfu_init_env_entities(argv[1], simple_strtoul(argv[2], NULL, 10)); if (ret) - return CMD_RET_FAILURE; + return ret; if (argc > 3 && strcmp(argv[3], "list") == 0) { dfu_show_entities(); @@ -67,7 +53,6 @@ exit: g_dnl_unregister(); done: dfu_free_entities(); - free(env_bkp); if (dfu_reset()) run_command("reset", 0); diff --git a/common/cmd_usb_mass_storage.c b/common/cmd_usb_mass_storage.c index 33a4715..ccf7195 100644 --- a/common/cmd_usb_mass_storage.c +++ b/common/cmd_usb_mass_storage.c @@ -5,7 +5,6 @@ * SPDX-License-Identifier: GPL-2.0+ */ -#include <errno.h> #include <common.h> #include <command.h> #include <g_dnl.h> diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile index fca370a..de9e44e 100644 --- a/drivers/dfu/Makefile +++ b/drivers/dfu/Makefile @@ -12,6 +12,7 @@ LIB = $(obj)libdfu.o COBJS-$(CONFIG_DFU_FUNCTION) += dfu.o COBJS-$(CONFIG_DFU_MMC) += dfu_mmc.o COBJS-$(CONFIG_DFU_NAND) += dfu_nand.o +COBJS-$(CONFIG_DFU_RAM) += dfu_ram.o SRCS := $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(COBJS-y)) diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index d73d510..56b21c7 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -41,6 +41,29 @@ static int dfu_find_alt_num(const char *s) return ++i; } +int dfu_init_env_entities(char *interface, int dev) +{ + const char *str_env; + char *env_bkp; + int ret; + + str_env = getenv("dfu_alt_info"); + if (!str_env) { + error("\"dfu_alt_info\" env variable not defined!\n"); + return -EINVAL; + } + + env_bkp = strdup(str_env); + ret = dfu_config_entities(env_bkp, interface, dev); + if (ret) { + error("DFU entities configuration failed!\n"); + return ret; + } + + free(env_bkp); + return 0; +} + static unsigned char *dfu_buf; static unsigned long dfu_buf_size = CONFIG_SYS_DFU_DATA_BUF_SIZE; @@ -153,8 +176,8 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) /* we should be in buffer now (if not then size too large) */ if ((dfu->i_buf + size) > dfu->i_buf_end) { - printf("%s: Wrong size! [%d] [%d] - %d\n", - __func__, dfu->i_blk_seq_num, blk_seq_num, size); + error("Buffer overflow! (0x%p + 0x%x > 0x%p)\n", dfu->i_buf, + size, dfu->i_buf_end); return -1; } @@ -325,6 +348,9 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, } else if (strcmp(interface, "nand") == 0) { if (dfu_fill_entity_nand(dfu, s)) return -1; + } else if (strcmp(interface, "ram") == 0) { + if (dfu_fill_entity_ram(dfu, s)) + return -1; } else { printf("%s: Device %s not (yet) supported!\n", __func__, interface); @@ -374,14 +400,14 @@ int dfu_config_entities(char *env, char *interface, int num) const char *dfu_get_dev_type(enum dfu_device_type t) { - const char *dev_t[] = {NULL, "eMMC", "OneNAND", "NAND" }; + const char *dev_t[] = {NULL, "eMMC", "OneNAND", "NAND", "RAM" }; return dev_t[t]; } const char *dfu_get_layout(enum dfu_layout l) { const char *dfu_layout[] = {NULL, "RAW_ADDR", "FAT", "EXT2", - "EXT3", "EXT4" }; + "EXT3", "EXT4", "RAM_ADDR" }; return dfu_layout[l]; } diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 0871a77..f942758 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -13,16 +13,11 @@ #include <div64.h> #include <dfu.h> -enum dfu_mmc_op { - DFU_OP_READ = 1, - DFU_OP_WRITE, -}; - static unsigned char __aligned(CONFIG_SYS_CACHELINE_SIZE) dfu_file_buf[CONFIG_SYS_DFU_MAX_FILE_SIZE]; static long dfu_file_buf_len; -static int mmc_block_op(enum dfu_mmc_op op, struct dfu_entity *dfu, +static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) { char cmd_buf[DFU_CMD_BUF_SIZE]; @@ -65,7 +60,7 @@ static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len) return 0; } -static int mmc_file_op(enum dfu_mmc_op op, struct dfu_entity *dfu, +static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu, void *buf, long *len) { char cmd_buf[DFU_CMD_BUF_SIZE]; diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c index 0ec12cf..edbf5a9 100644 --- a/drivers/dfu/dfu_nand.c +++ b/drivers/dfu/dfu_nand.c @@ -19,12 +19,7 @@ #include <jffs2/load_kernel.h> #include <nand.h> -enum dfu_nand_op { - DFU_OP_READ = 1, - DFU_OP_WRITE, -}; - -static int nand_block_op(enum dfu_nand_op op, struct dfu_entity *dfu, +static int nand_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) { loff_t start, lim; diff --git a/drivers/dfu/dfu_ram.c b/drivers/dfu/dfu_ram.c new file mode 100644 index 0000000..335a8e1 --- /dev/null +++ b/drivers/dfu/dfu_ram.c @@ -0,0 +1,77 @@ +/* + * (C) Copyright 2013 + * Afzal Mohammed <afzal.mohd.ma@gmail.com> + * + * Reference: dfu_mmc.c + * Copyright (C) 2012 Samsung Electronics + * author: Lukasz Majewski <l.majewski@samsung.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <malloc.h> +#include <errno.h> +#include <dfu.h> + +static int dfu_transfer_medium_ram(enum dfu_op op, struct dfu_entity *dfu, + u64 offset, void *buf, long *len) +{ + if (dfu->layout != DFU_RAM_ADDR) { + error("unsupported layout: %s\n", dfu_get_layout(dfu->layout)); + return -EINVAL; + } + + if (offset > dfu->data.ram.size) { + error("request exceeds allowed area\n"); + return -EINVAL; + } + + if (op == DFU_OP_WRITE) + memcpy(dfu->data.ram.start + offset, buf, *len); + else + memcpy(buf, dfu->data.ram.start + offset, *len); + + return 0; +} + +static int dfu_write_medium_ram(struct dfu_entity *dfu, u64 offset, + void *buf, long *len) +{ + return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len); +} + +static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset, + void *buf, long *len) +{ + if (!*len) { + *len = dfu->data.ram.size; + return 0; + } + + return dfu_transfer_medium_ram(DFU_OP_READ, dfu, offset, buf, len); +} + +int dfu_fill_entity_ram(struct dfu_entity *dfu, char *s) +{ + char *st; + + dfu->dev_type = DFU_DEV_RAM; + st = strsep(&s, " "); + if (strcmp(st, "ram")) { + error("unsupported device: %s\n", st); + return -ENODEV; + } + + dfu->layout = DFU_RAM_ADDR; + dfu->data.ram.start = (void *)simple_strtoul(s, &s, 16); + s++; + dfu->data.ram.size = simple_strtoul(s, &s, 16); + + dfu->write_medium = dfu_write_medium_ram; + dfu->read_medium = dfu_read_medium_ram; + + dfu->inited = 0; + + return 0; +} diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 4c2a39a..1590c4a 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -18,10 +18,12 @@ endif # new USB gadget layer dependencies ifdef CONFIG_USB_GADGET +COBJS-$(CONFIG_USB_GADGET_ATMEL_USBA) += atmel_usba_udc.o COBJS-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o COBJS-$(CONFIG_USB_GADGET_FOTG210) += fotg210.o COBJS-$(CONFIG_USBDOWNLOAD_GADGET) += g_dnl.o COBJS-$(CONFIG_DFU_FUNCTION) += f_dfu.o +COBJS-$(CONFIG_USB_GADGET_MASS_STORAGE) += f_mass_storage.o endif ifdef CONFIG_USB_ETHER COBJS-y += ether.o diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c new file mode 100644 index 0000000..c99208d --- /dev/null +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -0,0 +1,1306 @@ +/* + * Driver for the Atmel USBA high speed USB device controller + * [Original from Linux kernel: drivers/usb/gadget/atmel_usba_udc.c] + * + * Copyright (C) 2005-2013 Atmel Corporation + * Bo Shen <voice.shen@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/errno.h> +#include <asm/gpio.h> +#include <asm/hardware.h> +#include <linux/list.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/usb/atmel_usba_udc.h> +#include <malloc.h> +#include <usb/lin_gadget_compat.h> + +#include "atmel_usba_udc.h" + +static int vbus_is_present(struct usba_udc *udc) +{ + /* No Vbus detection: Assume always present */ + return 1; +} + +static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req) +{ + unsigned int transaction_len; + + transaction_len = req->req.length - req->req.actual; + req->last_transaction = 1; + if (transaction_len > ep->ep.maxpacket) { + transaction_len = ep->ep.maxpacket; + req->last_transaction = 0; + } else if (transaction_len == ep->ep.maxpacket && req->req.zero) { + req->last_transaction = 0; + } + + DBG(DBG_QUEUE, "%s: submit_transaction, req %p (length %d)%s\n", + ep->ep.name, req, transaction_len, + req->last_transaction ? ", done" : ""); + + memcpy(ep->fifo, req->req.buf + req->req.actual, transaction_len); + usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); + req->req.actual += transaction_len; +} + +static void submit_request(struct usba_ep *ep, struct usba_request *req) +{ + DBG(DBG_QUEUE, "%s: submit_request: req %p (length %d), dma: %d\n", + ep->ep.name, req, req->req.length, req->using_dma); + + req->req.actual = 0; + req->submitted = 1; + + next_fifo_transaction(ep, req); + if (req->last_transaction) { + usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY); + usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE); + } else { + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY); + } +} + +static void submit_next_request(struct usba_ep *ep) +{ + struct usba_request *req; + + if (list_empty(&ep->queue)) { + usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY | USBA_RX_BK_RDY); + return; + } + + req = list_entry(ep->queue.next, struct usba_request, queue); + if (!req->submitted) + submit_request(ep, req); +} + +static void send_status(struct usba_udc *udc, struct usba_ep *ep) +{ + ep->state = STATUS_STAGE_IN; + usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); + usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE); +} + +static void receive_data(struct usba_ep *ep) +{ + struct usba_udc *udc = ep->udc; + struct usba_request *req; + unsigned long status; + unsigned int bytecount, nr_busy; + int is_complete = 0; + + status = usba_ep_readl(ep, STA); + nr_busy = USBA_BFEXT(BUSY_BANKS, status); + + DBG(DBG_QUEUE, "receive data: nr_busy=%u\n", nr_busy); + + while (nr_busy > 0) { + if (list_empty(&ep->queue)) { + usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY); + break; + } + req = list_entry(ep->queue.next, + struct usba_request, queue); + + bytecount = USBA_BFEXT(BYTE_COUNT, status); + + if (status & USBA_SHORT_PACKET) + is_complete = 1; + if (req->req.actual + bytecount >= req->req.length) { + is_complete = 1; + bytecount = req->req.length - req->req.actual; + } + + memcpy(req->req.buf + req->req.actual, ep->fifo, bytecount); + req->req.actual += bytecount; + + usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY); + + if (is_complete) { + DBG(DBG_QUEUE, "%s: request done\n", ep->ep.name); + req->req.status = 0; + list_del_init(&req->queue); + usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY); + spin_lock(&udc->lock); + req->req.complete(&ep->ep, &req->req); + spin_unlock(&udc->lock); + } + + status = usba_ep_readl(ep, STA); + nr_busy = USBA_BFEXT(BUSY_BANKS, status); + + if (is_complete && ep_is_control(ep)) { + send_status(udc, ep); + break; + } + } +} + +static void +request_complete(struct usba_ep *ep, struct usba_request *req, int status) +{ + if (req->req.status == -EINPROGRESS) + req->req.status = status; + + DBG(DBG_GADGET | DBG_REQ, "%s: req %p complete: status %d, actual %u\n", + ep->ep.name, req, req->req.status, req->req.actual); + + req->req.complete(&ep->ep, &req->req); +} + +static void +request_complete_list(struct usba_ep *ep, struct list_head *list, int status) +{ + struct usba_request *req, *tmp_req; + + list_for_each_entry_safe(req, tmp_req, list, queue) { + list_del_init(&req->queue); + request_complete(ep, req, status); + } +} + +static int +usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) +{ + struct usba_ep *ep = to_usba_ep(_ep); + struct usba_udc *udc = ep->udc; + unsigned long flags, ept_cfg, maxpacket; + unsigned int nr_trans; + + DBG(DBG_GADGET, "%s: ep_enable: desc=%p\n", ep->ep.name, desc); + + maxpacket = usb_endpoint_maxp(desc) & 0x7ff; + + if (((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) + != ep->index) || + ep->index == 0 || + desc->bDescriptorType != USB_DT_ENDPOINT || + maxpacket == 0 || + maxpacket > ep->fifo_size) { + DBG(DBG_ERR, "ep_enable: Invalid argument"); + return -EINVAL; + } + + ep->is_isoc = 0; + ep->is_in = 0; + + if (maxpacket <= 8) + ept_cfg = USBA_BF(EPT_SIZE, USBA_EPT_SIZE_8); + else + /* LSB is bit 1, not 0 */ + ept_cfg = USBA_BF(EPT_SIZE, fls(maxpacket - 1) - 3); + + DBG(DBG_HW, "%s: EPT_SIZE = %lu (maxpacket = %lu)\n", + ep->ep.name, ept_cfg, maxpacket); + + if (usb_endpoint_dir_in(desc)) { + ep->is_in = 1; + ept_cfg |= USBA_EPT_DIR_IN; + } + + switch (usb_endpoint_type(desc)) { + case USB_ENDPOINT_XFER_CONTROL: + ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL); + ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE); + break; + case USB_ENDPOINT_XFER_ISOC: + if (!ep->can_isoc) { + DBG(DBG_ERR, "ep_enable: %s is not isoc capable\n", + ep->ep.name); + return -EINVAL; + } + + /* + * Bits 11:12 specify number of _additional_ + * transactions per microframe. + */ + nr_trans = ((usb_endpoint_maxp(desc) >> 11) & 3) + 1; + if (nr_trans > 3) + return -EINVAL; + + ep->is_isoc = 1; + ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_ISO); + + /* + * Do triple-buffering on high-bandwidth iso endpoints. + */ + if (nr_trans > 1 && ep->nr_banks == 3) + ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_TRIPLE); + else + ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_DOUBLE); + ept_cfg |= USBA_BF(NB_TRANS, nr_trans); + break; + case USB_ENDPOINT_XFER_BULK: + ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK); + ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE); + break; + case USB_ENDPOINT_XFER_INT: + ept_cfg |= USBA_BF(EPT_TYPE, USBA_EPT_TYPE_INT); + ept_cfg |= USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE); + break; + } + + spin_lock_irqsave(&ep->udc->lock, flags); + + ep->desc = desc; + ep->ep.maxpacket = maxpacket; + + usba_ep_writel(ep, CFG, ept_cfg); + usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE); + + usba_writel(udc, INT_ENB, + (usba_readl(udc, INT_ENB) + | USBA_BF(EPT_INT, 1 << ep->index))); + + spin_unlock_irqrestore(&udc->lock, flags); + + DBG(DBG_HW, "EPT_CFG%d after init: %#08lx\n", ep->index, + (unsigned long)usba_ep_readl(ep, CFG)); + DBG(DBG_HW, "INT_ENB after init: %#08lx\n", + (unsigned long)usba_readl(udc, INT_ENB)); + + return 0; +} + +static int usba_ep_disable(struct usb_ep *_ep) +{ + struct usba_ep *ep = to_usba_ep(_ep); + struct usba_udc *udc = ep->udc; + LIST_HEAD(req_list); + unsigned long flags; + + DBG(DBG_GADGET, "ep_disable: %s\n", ep->ep.name); + + spin_lock_irqsave(&udc->lock, flags); + + if (!ep->desc) { + spin_unlock_irqrestore(&udc->lock, flags); + /* REVISIT because this driver disables endpoints in + * reset_all_endpoints() before calling disconnect(), + * most gadget drivers would trigger this non-error ... + */ + if (udc->gadget.speed != USB_SPEED_UNKNOWN) + DBG(DBG_ERR, "ep_disable: %s not enabled\n", + ep->ep.name); + return -EINVAL; + } + ep->desc = NULL; + + list_splice_init(&ep->queue, &req_list); + usba_ep_writel(ep, CFG, 0); + usba_ep_writel(ep, CTL_DIS, USBA_EPT_ENABLE); + usba_writel(udc, INT_ENB, + usba_readl(udc, INT_ENB) & + ~USBA_BF(EPT_INT, 1 << ep->index)); + + request_complete_list(ep, &req_list, -ESHUTDOWN); + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static struct usb_request * +usba_ep_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) +{ + struct usba_request *req; + + DBG(DBG_GADGET, "ep_alloc_request: %p, 0x%x\n", _ep, gfp_flags); + + req = malloc(sizeof(struct usba_request)); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +static void +usba_ep_free_request(struct usb_ep *_ep, struct usb_request *_req) +{ + struct usba_request *req = to_usba_req(_req); + + DBG(DBG_GADGET, "ep_free_request: %p, %p\n", _ep, _req); + + free(req); +} + +static int +usba_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) +{ + struct usba_request *req = to_usba_req(_req); + struct usba_ep *ep = to_usba_ep(_ep); + struct usba_udc *udc = ep->udc; + unsigned long flags; + int ret; + + DBG(DBG_GADGET | DBG_QUEUE | DBG_REQ, "%s: queue req %p, len %u\n", + ep->ep.name, req, _req->length); + + if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN || + !ep->desc) + return -ESHUTDOWN; + + req->submitted = 0; + req->using_dma = 0; + req->last_transaction = 0; + + _req->status = -EINPROGRESS; + _req->actual = 0; + + /* May have received a reset since last time we checked */ + ret = -ESHUTDOWN; + spin_lock_irqsave(&udc->lock, flags); + if (ep->desc) { + list_add_tail(&req->queue, &ep->queue); + + if ((!ep_is_control(ep) && ep->is_in) || + (ep_is_control(ep) && (ep->state == DATA_STAGE_IN || + ep->state == STATUS_STAGE_IN))) + usba_ep_writel(ep, CTL_ENB, USBA_TX_PK_RDY); + else + usba_ep_writel(ep, CTL_ENB, USBA_RX_BK_RDY); + + ret = 0; + } + spin_unlock_irqrestore(&udc->lock, flags); + + return ret; +} + +static int usba_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct usba_ep *ep = to_usba_ep(_ep); + struct usba_request *req = to_usba_req(_req); + + DBG(DBG_GADGET | DBG_QUEUE, "ep_dequeue: %s, req %p\n", + ep->ep.name, req); + + /* + * Errors should stop the queue from advancing until the + * completion function returns. + */ + list_del_init(&req->queue); + + request_complete(ep, req, -ECONNRESET); + + /* Process the next request if any */ + submit_next_request(ep); + + return 0; +} + +static int usba_ep_set_halt(struct usb_ep *_ep, int value) +{ + struct usba_ep *ep = to_usba_ep(_ep); + unsigned long flags; + int ret = 0; + + DBG(DBG_GADGET, "endpoint %s: %s HALT\n", ep->ep.name, + value ? "set" : "clear"); + + if (!ep->desc) { + DBG(DBG_ERR, "Attempted to halt uninitialized ep %s\n", + ep->ep.name); + return -ENODEV; + } + + if (ep->is_isoc) { + DBG(DBG_ERR, "Attempted to halt isochronous ep %s\n", + ep->ep.name); + return -ENOTTY; + } + + spin_lock_irqsave(&udc->lock, flags); + + /* + * We can't halt IN endpoints while there are still data to be + * transferred + */ + if (!list_empty(&ep->queue) || + ((value && ep->is_in && (usba_ep_readl(ep, STA) & + USBA_BF(BUSY_BANKS, -1L))))) { + ret = -EAGAIN; + } else { + if (value) + usba_ep_writel(ep, SET_STA, USBA_FORCE_STALL); + else + usba_ep_writel(ep, CLR_STA, + USBA_FORCE_STALL | USBA_TOGGLE_CLR); + usba_ep_readl(ep, STA); + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return ret; +} + +static int usba_ep_fifo_status(struct usb_ep *_ep) +{ + struct usba_ep *ep = to_usba_ep(_ep); + + return USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA)); +} + +static void usba_ep_fifo_flush(struct usb_ep *_ep) +{ + struct usba_ep *ep = to_usba_ep(_ep); + struct usba_udc *udc = ep->udc; + + usba_writel(udc, EPT_RST, 1 << ep->index); +} + +static const struct usb_ep_ops usba_ep_ops = { + .enable = usba_ep_enable, + .disable = usba_ep_disable, + .alloc_request = usba_ep_alloc_request, + .free_request = usba_ep_free_request, + .queue = usba_ep_queue, + .dequeue = usba_ep_dequeue, + .set_halt = usba_ep_set_halt, + .fifo_status = usba_ep_fifo_status, + .fifo_flush = usba_ep_fifo_flush, +}; + +static int usba_udc_get_frame(struct usb_gadget *gadget) +{ + struct usba_udc *udc = to_usba_udc(gadget); + + return USBA_BFEXT(FRAME_NUMBER, usba_readl(udc, FNUM)); +} + +static int usba_udc_wakeup(struct usb_gadget *gadget) +{ + struct usba_udc *udc = to_usba_udc(gadget); + unsigned long flags; + u32 ctrl; + int ret = -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + if (udc->devstatus & (1 << USB_DEVICE_REMOTE_WAKEUP)) { + ctrl = usba_readl(udc, CTRL); + usba_writel(udc, CTRL, ctrl | USBA_REMOTE_WAKE_UP); + ret = 0; + } + spin_unlock_irqrestore(&udc->lock, flags); + + return ret; +} + +static int +usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered) +{ + struct usba_udc *udc = to_usba_udc(gadget); + unsigned long flags; + + spin_lock_irqsave(&udc->lock, flags); + if (is_selfpowered) + udc->devstatus |= 1 << USB_DEVICE_SELF_POWERED; + else + udc->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static const struct usb_gadget_ops usba_udc_ops = { + .get_frame = usba_udc_get_frame, + .wakeup = usba_udc_wakeup, + .set_selfpowered = usba_udc_set_selfpowered, +}; + +static struct usb_endpoint_descriptor usba_ep0_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0, + .bmAttributes = USB_ENDPOINT_XFER_CONTROL, + .wMaxPacketSize = cpu_to_le16(64), + /* FIXME: I have no idea what to put here */ + .bInterval = 1, +}; + +/* + * Called with interrupts disabled and udc->lock held. + */ +static void reset_all_endpoints(struct usba_udc *udc) +{ + struct usba_ep *ep; + struct usba_request *req, *tmp_req; + + usba_writel(udc, EPT_RST, ~0UL); + + ep = to_usba_ep(udc->gadget.ep0); + list_for_each_entry_safe(req, tmp_req, &ep->queue, queue) { + list_del_init(&req->queue); + request_complete(ep, req, -ECONNRESET); + } + + /* NOTE: normally, the next call to the gadget driver is in + * charge of disabling endpoints... usually disconnect(). + * The exception would be entering a high speed test mode. + * + * FIXME remove this code ... and retest thoroughly. + */ + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { + if (ep->desc) { + spin_unlock(&udc->lock); + usba_ep_disable(&ep->ep); + spin_lock(&udc->lock); + } + } +} + +static struct usba_ep *get_ep_by_addr(struct usba_udc *udc, u16 wIndex) +{ + struct usba_ep *ep; + + if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) + return to_usba_ep(udc->gadget.ep0); + + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { + u8 bEndpointAddress; + + if (!ep->desc) + continue; + bEndpointAddress = ep->desc->bEndpointAddress; + if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) + continue; + if ((bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) + == (wIndex & USB_ENDPOINT_NUMBER_MASK)) + return ep; + } + + return NULL; +} + +/* Called with interrupts disabled and udc->lock held */ +static inline void set_protocol_stall(struct usba_udc *udc, struct usba_ep *ep) +{ + usba_ep_writel(ep, SET_STA, USBA_FORCE_STALL); + ep->state = WAIT_FOR_SETUP; +} + +static inline int is_stalled(struct usba_udc *udc, struct usba_ep *ep) +{ + if (usba_ep_readl(ep, STA) & USBA_FORCE_STALL) + return 1; + return 0; +} + +static inline void set_address(struct usba_udc *udc, unsigned int addr) +{ + u32 regval; + + DBG(DBG_BUS, "setting address %u...\n", addr); + regval = usba_readl(udc, CTRL); + regval = USBA_BFINS(DEV_ADDR, addr, regval); + usba_writel(udc, CTRL, regval); +} + +static int do_test_mode(struct usba_udc *udc) +{ + static const char test_packet_buffer[] = { + /* JKJKJKJK * 9 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* JJKKJJKK * 8 */ + 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, + /* JJKKJJKK * 8 */ + 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, + /* JJJJJJJKKKKKKK * 8 */ + 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + /* JJJJJJJK * 8 */ + 0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD, + /* {JKKKKKKK * 10}, JK */ + 0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD, 0x7E + }; + struct usba_ep *ep; + int test_mode; + + test_mode = udc->test_mode; + + /* Start from a clean slate */ + reset_all_endpoints(udc); + + switch (test_mode) { + case 0x0100: + /* Test_J */ + usba_writel(udc, TST, USBA_TST_J_MODE); + DBG(DBG_ALL, "Entering Test_J mode...\n"); + break; + case 0x0200: + /* Test_K */ + usba_writel(udc, TST, USBA_TST_K_MODE); + DBG(DBG_ALL, "Entering Test_K mode...\n"); + break; + case 0x0300: + /* + * Test_SE0_NAK: Force high-speed mode and set up ep0 + * for Bulk IN transfers + */ + ep = &udc->usba_ep[0]; + usba_writel(udc, TST, + USBA_BF(SPEED_CFG, USBA_SPEED_CFG_FORCE_HIGH)); + usba_ep_writel(ep, CFG, + USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64) + | USBA_EPT_DIR_IN + | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK) + | USBA_BF(BK_NUMBER, 1)); + if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) { + set_protocol_stall(udc, ep); + DBG(DBG_ALL, "Test_SE0_NAK: ep0 not mapped\n"); + } else { + usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE); + DBG(DBG_ALL, "Entering Test_SE0_NAK mode...\n"); + } + break; + case 0x0400: + /* Test_Packet */ + ep = &udc->usba_ep[0]; + usba_ep_writel(ep, CFG, + USBA_BF(EPT_SIZE, USBA_EPT_SIZE_64) + | USBA_EPT_DIR_IN + | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_BULK) + | USBA_BF(BK_NUMBER, 1)); + if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) { + set_protocol_stall(udc, ep); + DBG(DBG_ALL, "Test_Packet: ep0 not mapped\n"); + } else { + usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE); + usba_writel(udc, TST, USBA_TST_PKT_MODE); + memcpy(ep->fifo, test_packet_buffer, + sizeof(test_packet_buffer)); + usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); + DBG(DBG_ALL, "Entering Test_Packet mode...\n"); + } + break; + default: + DBG(DBG_ERR, "Invalid test mode: 0x%04x\n", test_mode); + return -EINVAL; + } + + return 0; +} + +/* Avoid overly long expressions */ +static inline bool feature_is_dev_remote_wakeup(struct usb_ctrlrequest *crq) +{ + if (crq->wValue == cpu_to_le16(USB_DEVICE_REMOTE_WAKEUP)) + return true; + return false; +} + +static inline bool feature_is_dev_test_mode(struct usb_ctrlrequest *crq) +{ + if (crq->wValue == cpu_to_le16(USB_DEVICE_TEST_MODE)) + return true; + return false; +} + +static inline bool feature_is_ep_halt(struct usb_ctrlrequest *crq) +{ + if (crq->wValue == cpu_to_le16(USB_ENDPOINT_HALT)) + return true; + return false; +} + +static int handle_ep0_setup(struct usba_udc *udc, struct usba_ep *ep, + struct usb_ctrlrequest *crq) +{ + int retval = 0; + + switch (crq->bRequest) { + case USB_REQ_GET_STATUS: { + u16 status; + + if (crq->bRequestType == (USB_DIR_IN | USB_RECIP_DEVICE)) { + status = cpu_to_le16(udc->devstatus); + } else if (crq->bRequestType + == (USB_DIR_IN | USB_RECIP_INTERFACE)) { + status = cpu_to_le16(0); + } else if (crq->bRequestType + == (USB_DIR_IN | USB_RECIP_ENDPOINT)) { + struct usba_ep *target; + + target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); + if (!target) + goto stall; + + status = 0; + if (is_stalled(udc, target)) + status |= cpu_to_le16(1); + } else { + goto delegate; + } + + /* Write directly to the FIFO. No queueing is done. */ + if (crq->wLength != cpu_to_le16(sizeof(status))) + goto stall; + ep->state = DATA_STAGE_IN; + __raw_writew(status, ep->fifo); + usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY); + break; + } + + case USB_REQ_CLEAR_FEATURE: { + if (crq->bRequestType == USB_RECIP_DEVICE) { + if (feature_is_dev_remote_wakeup(crq)) + udc->devstatus + &= ~(1 << USB_DEVICE_REMOTE_WAKEUP); + else + /* Can't CLEAR_FEATURE TEST_MODE */ + goto stall; + } else if (crq->bRequestType == USB_RECIP_ENDPOINT) { + struct usba_ep *target; + + if (crq->wLength != cpu_to_le16(0) || + !feature_is_ep_halt(crq)) + goto stall; + target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); + if (!target) + goto stall; + + usba_ep_writel(target, CLR_STA, USBA_FORCE_STALL); + if (target->index != 0) + usba_ep_writel(target, CLR_STA, + USBA_TOGGLE_CLR); + } else { + goto delegate; + } + + send_status(udc, ep); + break; + } + + case USB_REQ_SET_FEATURE: { + if (crq->bRequestType == USB_RECIP_DEVICE) { + if (feature_is_dev_test_mode(crq)) { + send_status(udc, ep); + ep->state = STATUS_STAGE_TEST; + udc->test_mode = le16_to_cpu(crq->wIndex); + return 0; + } else if (feature_is_dev_remote_wakeup(crq)) { + udc->devstatus |= 1 << USB_DEVICE_REMOTE_WAKEUP; + } else { + goto stall; + } + } else if (crq->bRequestType == USB_RECIP_ENDPOINT) { + struct usba_ep *target; + + if (crq->wLength != cpu_to_le16(0) || + !feature_is_ep_halt(crq)) + goto stall; + + target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); + if (!target) + goto stall; + + usba_ep_writel(target, SET_STA, USBA_FORCE_STALL); + } else { + goto delegate; + } + + send_status(udc, ep); + break; + } + + case USB_REQ_SET_ADDRESS: + if (crq->bRequestType != (USB_DIR_OUT | USB_RECIP_DEVICE)) + goto delegate; + + set_address(udc, le16_to_cpu(crq->wValue)); + send_status(udc, ep); + ep->state = STATUS_STAGE_ADDR; + break; + + default: +delegate: + spin_unlock(&udc->lock); + retval = udc->driver->setup(&udc->gadget, crq); + spin_lock(&udc->lock); + } + + return retval; + +stall: + DBG(DBG_ALL, "%s: Invalid setup request: %02x.%02x v%04x i%04x l%d\n", + ep->ep.name, crq->bRequestType, crq->bRequest, + le16_to_cpu(crq->wValue), le16_to_cpu(crq->wIndex), + le16_to_cpu(crq->wLength)); + set_protocol_stall(udc, ep); + + return -1; +} + +static void usba_control_irq(struct usba_udc *udc, struct usba_ep *ep) +{ + struct usba_request *req; + u32 epstatus; + u32 epctrl; + +restart: + epstatus = usba_ep_readl(ep, STA); + epctrl = usba_ep_readl(ep, CTL); + + DBG(DBG_INT, "%s [%d]: s/%08x c/%08x\n", + ep->ep.name, ep->state, epstatus, epctrl); + + req = NULL; + if (!list_empty(&ep->queue)) + req = list_entry(ep->queue.next, + struct usba_request, queue); + + if ((epctrl & USBA_TX_PK_RDY) && !(epstatus & USBA_TX_PK_RDY)) { + if (req->submitted) + next_fifo_transaction(ep, req); + else + submit_request(ep, req); + + if (req->last_transaction) { + usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY); + usba_ep_writel(ep, CTL_ENB, USBA_TX_COMPLETE); + } + goto restart; + } + if ((epstatus & epctrl) & USBA_TX_COMPLETE) { + usba_ep_writel(ep, CLR_STA, USBA_TX_COMPLETE); + + switch (ep->state) { + case DATA_STAGE_IN: + usba_ep_writel(ep, CTL_ENB, USBA_RX_BK_RDY); + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + ep->state = STATUS_STAGE_OUT; + break; + case STATUS_STAGE_ADDR: + /* Activate our new address */ + usba_writel(udc, CTRL, (usba_readl(udc, CTRL) + | USBA_FADDR_EN)); + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + ep->state = WAIT_FOR_SETUP; + break; + case STATUS_STAGE_IN: + if (req) { + list_del_init(&req->queue); + request_complete(ep, req, 0); + submit_next_request(ep); + } + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + ep->state = WAIT_FOR_SETUP; + break; + case STATUS_STAGE_TEST: + usba_ep_writel(ep, CTL_DIS, USBA_TX_COMPLETE); + ep->state = WAIT_FOR_SETUP; + if (do_test_mode(udc)) + set_protocol_stall(udc, ep); + break; + default: + DBG(DBG_ALL, "%s: TXCOMP: Invalid endpoint state %d\n", + ep->ep.name, ep->state); + set_protocol_stall(udc, ep); + break; + } + + goto restart; + } + if ((epstatus & epctrl) & USBA_RX_BK_RDY) { + switch (ep->state) { + case STATUS_STAGE_OUT: + usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY); + usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY); + + if (req) { + list_del_init(&req->queue); + request_complete(ep, req, 0); + } + ep->state = WAIT_FOR_SETUP; + break; + + case DATA_STAGE_OUT: + receive_data(ep); + break; + + default: + usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY); + usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY); + DBG(DBG_ALL, "%s: RXRDY: Invalid endpoint state %d\n", + ep->ep.name, ep->state); + set_protocol_stall(udc, ep); + break; + } + + goto restart; + } + if (epstatus & USBA_RX_SETUP) { + union { + struct usb_ctrlrequest crq; + unsigned long data[2]; + } crq; + unsigned int pkt_len; + int ret; + + if (ep->state != WAIT_FOR_SETUP) { + /* + * Didn't expect a SETUP packet at this + * point. Clean up any pending requests (which + * may be successful). + */ + int status = -EPROTO; + + /* + * RXRDY and TXCOMP are dropped when SETUP + * packets arrive. Just pretend we received + * the status packet. + */ + if (ep->state == STATUS_STAGE_OUT || + ep->state == STATUS_STAGE_IN) { + usba_ep_writel(ep, CTL_DIS, USBA_RX_BK_RDY); + status = 0; + } + + if (req) { + list_del_init(&req->queue); + request_complete(ep, req, status); + } + } + + pkt_len = USBA_BFEXT(BYTE_COUNT, usba_ep_readl(ep, STA)); + DBG(DBG_HW, "Packet length: %u\n", pkt_len); + if (pkt_len != sizeof(crq)) { + DBG(DBG_ALL, "udc: Invalid length %u (expected %zu)\n", + pkt_len, sizeof(crq)); + set_protocol_stall(udc, ep); + return; + } + + DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo); + memcpy(crq.data, ep->fifo, sizeof(crq)); + + /* Free up one bank in the FIFO so that we can + * generate or receive a reply right away. */ + usba_ep_writel(ep, CLR_STA, USBA_RX_SETUP); + + if (crq.crq.bRequestType & USB_DIR_IN) { + /* + * The USB 2.0 spec states that "if wLength is + * zero, there is no data transfer phase." + * However, testusb #14 seems to actually + * expect a data phase even if wLength = 0... + */ + ep->state = DATA_STAGE_IN; + } else { + if (crq.crq.wLength != cpu_to_le16(0)) + ep->state = DATA_STAGE_OUT; + else + ep->state = STATUS_STAGE_IN; + } + + ret = -1; + if (ep->index == 0) { + ret = handle_ep0_setup(udc, ep, &crq.crq); + } else { + spin_unlock(&udc->lock); + ret = udc->driver->setup(&udc->gadget, &crq.crq); + spin_lock(&udc->lock); + } + + DBG(DBG_BUS, "req %02x.%02x, length %d, state %d, ret %d\n", + crq.crq.bRequestType, crq.crq.bRequest, + le16_to_cpu(crq.crq.wLength), ep->state, ret); + + if (ret < 0) { + /* Let the host know that we failed */ + set_protocol_stall(udc, ep); + } + } +} + +static void usba_ep_irq(struct usba_udc *udc, struct usba_ep *ep) +{ + struct usba_request *req; + u32 epstatus; + u32 epctrl; + + epstatus = usba_ep_readl(ep, STA); + epctrl = usba_ep_readl(ep, CTL); + + DBG(DBG_INT, "%s: interrupt, status: 0x%08x\n", ep->ep.name, epstatus); + + while ((epctrl & USBA_TX_PK_RDY) && !(epstatus & USBA_TX_PK_RDY)) { + DBG(DBG_BUS, "%s: TX PK ready\n", ep->ep.name); + + if (list_empty(&ep->queue)) { + DBG(DBG_INT, "ep_irq: queue empty\n"); + usba_ep_writel(ep, CTL_DIS, USBA_TX_PK_RDY); + return; + } + + req = list_entry(ep->queue.next, struct usba_request, queue); + + if (req->submitted) + next_fifo_transaction(ep, req); + else + submit_request(ep, req); + + if (req->last_transaction) { + list_del_init(&req->queue); + submit_next_request(ep); + request_complete(ep, req, 0); + } + + epstatus = usba_ep_readl(ep, STA); + epctrl = usba_ep_readl(ep, CTL); + } + + if ((epstatus & epctrl) & USBA_RX_BK_RDY) { + DBG(DBG_BUS, "%s: RX data ready\n", ep->ep.name); + receive_data(ep); + usba_ep_writel(ep, CLR_STA, USBA_RX_BK_RDY); + } +} + +static int usba_udc_irq(struct usba_udc *udc) +{ + u32 status, ep_status; + + spin_lock(&udc->lock); + + status = usba_readl(udc, INT_STA); + DBG(DBG_INT, "irq, status=%#08x\n", status); + + if (status & USBA_DET_SUSPEND) { + usba_writel(udc, INT_CLR, USBA_DET_SUSPEND); + DBG(DBG_BUS, "Suspend detected\n"); + if (udc->gadget.speed != USB_SPEED_UNKNOWN && + udc->driver && udc->driver->suspend) { + spin_unlock(&udc->lock); + udc->driver->suspend(&udc->gadget); + spin_lock(&udc->lock); + } + } + + if (status & USBA_WAKE_UP) { + usba_writel(udc, INT_CLR, USBA_WAKE_UP); + DBG(DBG_BUS, "Wake Up CPU detected\n"); + } + + if (status & USBA_END_OF_RESUME) { + usba_writel(udc, INT_CLR, USBA_END_OF_RESUME); + DBG(DBG_BUS, "Resume detected\n"); + if (udc->gadget.speed != USB_SPEED_UNKNOWN && + udc->driver && udc->driver->resume) { + spin_unlock(&udc->lock); + udc->driver->resume(&udc->gadget); + spin_lock(&udc->lock); + } + } + + ep_status = USBA_BFEXT(EPT_INT, status); + if (ep_status) { + int i; + + for (i = 0; i < USBA_NR_ENDPOINTS; i++) + if (ep_status & (1 << i)) { + if (ep_is_control(&udc->usba_ep[i])) + usba_control_irq(udc, &udc->usba_ep[i]); + else + usba_ep_irq(udc, &udc->usba_ep[i]); + } + } + + if (status & USBA_END_OF_RESET) { + struct usba_ep *ep0; + + usba_writel(udc, INT_CLR, USBA_END_OF_RESET); + reset_all_endpoints(udc); + + if (udc->gadget.speed != USB_SPEED_UNKNOWN && + udc->driver->disconnect) { + udc->gadget.speed = USB_SPEED_UNKNOWN; + spin_unlock(&udc->lock); + udc->driver->disconnect(&udc->gadget); + spin_lock(&udc->lock); + } + + if (status & USBA_HIGH_SPEED) + udc->gadget.speed = USB_SPEED_HIGH; + else + udc->gadget.speed = USB_SPEED_FULL; + + ep0 = &udc->usba_ep[0]; + ep0->desc = &usba_ep0_desc; + ep0->state = WAIT_FOR_SETUP; + usba_ep_writel(ep0, CFG, + (USBA_BF(EPT_SIZE, EP0_EPT_SIZE) + | USBA_BF(EPT_TYPE, USBA_EPT_TYPE_CONTROL) + | USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE))); + usba_ep_writel(ep0, CTL_ENB, + USBA_EPT_ENABLE | USBA_RX_SETUP); + usba_writel(udc, INT_ENB, + (usba_readl(udc, INT_ENB) + | USBA_BF(EPT_INT, 1) + | USBA_DET_SUSPEND + | USBA_END_OF_RESUME)); + + /* + * Unclear why we hit this irregularly, e.g. in usbtest, + * but it's clearly harmless... + */ + if (!(usba_ep_readl(ep0, CFG) & USBA_EPT_MAPPED)) + DBG(DBG_ALL, "ODD: EP0 configuration is invalid!\n"); + } + + spin_unlock(&udc->lock); + + return 0; +} + +static int atmel_usba_start(struct usba_udc *udc) +{ + udc->devstatus = 1 << USB_DEVICE_SELF_POWERED; + + udc->vbus_prev = 0; + + /* If Vbus is present, enable the controller and wait for reset */ + if (vbus_is_present(udc) && udc->vbus_prev == 0) { + usba_writel(udc, CTRL, USBA_ENABLE_MASK); + usba_writel(udc, INT_ENB, USBA_END_OF_RESET); + } + + return 0; +} + +static int atmel_usba_stop(struct usba_udc *udc) +{ + udc->gadget.speed = USB_SPEED_UNKNOWN; + reset_all_endpoints(udc); + + /* This will also disable the DP pullup */ + usba_writel(udc, CTRL, USBA_DISABLE_MASK); + + return 0; +} + +static struct usba_udc controller = { + .regs = (unsigned *)ATMEL_BASE_UDPHS, + .fifo = (unsigned *)ATMEL_BASE_UDPHS_FIFO, + .gadget = { + .ops = &usba_udc_ops, + .ep_list = LIST_HEAD_INIT(controller.gadget.ep_list), + .speed = USB_SPEED_HIGH, + .is_dualspeed = 1, + .name = "atmel_usba_udc", + }, +}; + +int usb_gadget_handle_interrupts(void) +{ + struct usba_udc *udc = &controller; + + return usba_udc_irq(udc); +} + + +int usb_gadget_register_driver(struct usb_gadget_driver *driver) +{ + struct usba_udc *udc = &controller; + int ret; + + if (!driver || !driver->bind || !driver->setup) { + printf("bad paramter\n"); + return -EINVAL; + } + + if (udc->driver) { + printf("UDC already has a gadget driver\n"); + return -EBUSY; + } + + atmel_usba_start(udc); + + udc->driver = driver; + + ret = driver->bind(&udc->gadget); + if (ret) { + error("driver->bind() returned %d\n", ret); + udc->driver = NULL; + } + + return ret; +} + +int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) +{ + struct usba_udc *udc = &controller; + + if (!driver || !driver->unbind || !driver->disconnect) { + error("bad paramter\n"); + return -EINVAL; + } + + driver->disconnect(&udc->gadget); + driver->unbind(&udc->gadget); + udc->driver = NULL; + + atmel_usba_stop(udc); + + return 0; +} + +static struct usba_ep *usba_udc_pdata(struct usba_platform_data *pdata, + struct usba_udc *udc) +{ + struct usba_ep *eps; + int i; + + eps = malloc(sizeof(struct usba_ep) * pdata->num_ep); + if (!eps) { + error("failed to alloc eps\n"); + return NULL; + } + + udc->gadget.ep0 = &eps[0].ep; + + INIT_LIST_HEAD(&udc->gadget.ep_list); + INIT_LIST_HEAD(&eps[0].ep.ep_list); + + for (i = 0; i < pdata->num_ep; i++) { + struct usba_ep *ep = &eps[i]; + + ep->ep_regs = udc->regs + USBA_EPT_BASE(i); + ep->dma_regs = udc->regs + USBA_DMA_BASE(i); + ep->fifo = udc->fifo + USBA_FIFO_BASE(i); + ep->ep.ops = &usba_ep_ops; + ep->ep.name = pdata->ep[i].name; + ep->ep.maxpacket = pdata->ep[i].fifo_size; + ep->fifo_size = ep->ep.maxpacket; + ep->udc = udc; + INIT_LIST_HEAD(&ep->queue); + ep->nr_banks = pdata->ep[i].nr_banks; + ep->index = pdata->ep[i].index; + ep->can_dma = pdata->ep[i].can_dma; + ep->can_isoc = pdata->ep[i].can_isoc; + if (i) + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + }; + + return eps; +} + +int usba_udc_probe(struct usba_platform_data *pdata) +{ + struct usba_udc *udc; + + udc = &controller; + + udc->usba_ep = usba_udc_pdata(pdata, udc); + + return 0; +} diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h new file mode 100644 index 0000000..92e462d --- /dev/null +++ b/drivers/usb/gadget/atmel_usba_udc.h @@ -0,0 +1,326 @@ +/* + * Register definition for Atmel USBA high speed USB device controller + * [Original from Linux kernel: drivers/usb/gadget/atmel_usba_udc.h] + * + * Copyright (C) 2005-2013 Atmel Corporation + * Bo Shen <voice.shen@atmel.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __LINUX_USB_GADGET_USBA_UDC_H__ +#define __LINUX_USB_GADGET_USBA_UDC_H__ + +/* USB register offsets */ +#define USBA_CTRL 0x0000 +#define USBA_FNUM 0x0004 +#define USBA_INT_ENB 0x0010 +#define USBA_INT_STA 0x0014 +#define USBA_INT_CLR 0x0018 +#define USBA_EPT_RST 0x001c +#define USBA_TST 0x00e0 + +/* USB endpoint register offsets */ +#define USBA_EPT_CFG 0x0000 +#define USBA_EPT_CTL_ENB 0x0004 +#define USBA_EPT_CTL_DIS 0x0008 +#define USBA_EPT_CTL 0x000c +#define USBA_EPT_SET_STA 0x0014 +#define USBA_EPT_CLR_STA 0x0018 +#define USBA_EPT_STA 0x001c + +/* USB DMA register offsets */ +#define USBA_DMA_NXT_DSC 0x0000 +#define USBA_DMA_ADDRESS 0x0004 +#define USBA_DMA_CONTROL 0x0008 +#define USBA_DMA_STATUS 0x000c + +/* Bitfields in CTRL */ +#define USBA_DEV_ADDR_OFFSET 0 +#define USBA_DEV_ADDR_SIZE 7 +#define USBA_FADDR_EN (1 << 7) +#define USBA_EN_USBA (1 << 8) +#define USBA_DETACH (1 << 9) +#define USBA_REMOTE_WAKE_UP (1 << 10) +#define USBA_PULLD_DIS (1 << 11) + +#if defined(CONFIG_AVR32) +#define USBA_ENABLE_MASK USBA_EN_USBA +#define USBA_DISABLE_MASK 0 +#elif defined(CONFIG_AT91FAMILY) +#define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS) +#define USBA_DISABLE_MASK USBA_DETACH +#endif /* CONFIG_ARCH_AT91 */ + +/* Bitfields in FNUM */ +#define USBA_MICRO_FRAME_NUM_OFFSET 0 +#define USBA_MICRO_FRAME_NUM_SIZE 3 +#define USBA_FRAME_NUMBER_OFFSET 3 +#define USBA_FRAME_NUMBER_SIZE 11 +#define USBA_FRAME_NUM_ERROR (1 << 31) + +/* Bitfields in INT_ENB/INT_STA/INT_CLR */ +#define USBA_HIGH_SPEED (1 << 0) +#define USBA_DET_SUSPEND (1 << 1) +#define USBA_MICRO_SOF (1 << 2) +#define USBA_SOF (1 << 3) +#define USBA_END_OF_RESET (1 << 4) +#define USBA_WAKE_UP (1 << 5) +#define USBA_END_OF_RESUME (1 << 6) +#define USBA_UPSTREAM_RESUME (1 << 7) +#define USBA_EPT_INT_OFFSET 8 +#define USBA_EPT_INT_SIZE 16 +#define USBA_DMA_INT_OFFSET 24 +#define USBA_DMA_INT_SIZE 8 + +/* Bitfields in EPT_RST */ +#define USBA_RST_OFFSET 0 +#define USBA_RST_SIZE 16 + +/* Bitfields in USBA_TST */ +#define USBA_SPEED_CFG_OFFSET 0 +#define USBA_SPEED_CFG_SIZE 2 +#define USBA_TST_J_MODE (1 << 2) +#define USBA_TST_K_MODE (1 << 3) +#define USBA_TST_PKT_MODE (1 << 4) +#define USBA_OPMODE2 (1 << 5) + +/* Bitfields in EPT_CFG */ +#define USBA_EPT_SIZE_OFFSET 0 +#define USBA_EPT_SIZE_SIZE 3 +#define USBA_EPT_DIR_IN (1 << 3) +#define USBA_EPT_TYPE_OFFSET 4 +#define USBA_EPT_TYPE_SIZE 2 +#define USBA_BK_NUMBER_OFFSET 6 +#define USBA_BK_NUMBER_SIZE 2 +#define USBA_NB_TRANS_OFFSET 8 +#define USBA_NB_TRANS_SIZE 2 +#define USBA_EPT_MAPPED (1 << 31) + +/* Bitfields in EPT_CTL/EPT_CTL_ENB/EPT_CTL_DIS */ +#define USBA_EPT_ENABLE (1 << 0) +#define USBA_AUTO_VALID (1 << 1) +#define USBA_INTDIS_DMA (1 << 3) +#define USBA_NYET_DIS (1 << 4) +#define USBA_DATAX_RX (1 << 6) +#define USBA_MDATA_RX (1 << 7) +/* Bits 8-15 and 31 enable interrupts for respective bits in EPT_STA */ +#define USBA_BUSY_BANK_IE (1 << 18) + +/* Bitfields in EPT_SET_STA/EPT_CLR_STA/EPT_STA */ +#define USBA_FORCE_STALL (1 << 5) +#define USBA_TOGGLE_CLR (1 << 6) +#define USBA_TOGGLE_SEQ_OFFSET 6 +#define USBA_TOGGLE_SEQ_SIZE 2 +#define USBA_ERR_OVFLW (1 << 8) +#define USBA_RX_BK_RDY (1 << 9) +#define USBA_KILL_BANK (1 << 9) +#define USBA_TX_COMPLETE (1 << 10) +#define USBA_TX_PK_RDY (1 << 11) +#define USBA_ISO_ERR_TRANS (1 << 11) +#define USBA_RX_SETUP (1 << 12) +#define USBA_ISO_ERR_FLOW (1 << 12) +#define USBA_STALL_SENT (1 << 13) +#define USBA_ISO_ERR_CRC (1 << 13) +#define USBA_ISO_ERR_NBTRANS (1 << 13) +#define USBA_NAK_IN (1 << 14) +#define USBA_ISO_ERR_FLUSH (1 << 14) +#define USBA_NAK_OUT (1 << 15) +#define USBA_CURRENT_BANK_OFFSET 16 +#define USBA_CURRENT_BANK_SIZE 2 +#define USBA_BUSY_BANKS_OFFSET 18 +#define USBA_BUSY_BANKS_SIZE 2 +#define USBA_BYTE_COUNT_OFFSET 20 +#define USBA_BYTE_COUNT_SIZE 11 +#define USBA_SHORT_PACKET (1 << 31) + +/* Bitfields in DMA_CONTROL */ +#define USBA_DMA_CH_EN (1 << 0) +#define USBA_DMA_LINK (1 << 1) +#define USBA_DMA_END_TR_EN (1 << 2) +#define USBA_DMA_END_BUF_EN (1 << 3) +#define USBA_DMA_END_TR_IE (1 << 4) +#define USBA_DMA_END_BUF_IE (1 << 5) +#define USBA_DMA_DESC_LOAD_IE (1 << 6) +#define USBA_DMA_BURST_LOCK (1 << 7) +#define USBA_DMA_BUF_LEN_OFFSET 16 +#define USBA_DMA_BUF_LEN_SIZE 16 + +/* Bitfields in DMA_STATUS */ +#define USBA_DMA_CH_ACTIVE (1 << 1) +#define USBA_DMA_END_TR_ST (1 << 4) +#define USBA_DMA_END_BUF_ST (1 << 5) +#define USBA_DMA_DESC_LOAD_ST (1 << 6) + +/* Constants for SPEED_CFG */ +#define USBA_SPEED_CFG_NORMAL 0 +#define USBA_SPEED_CFG_FORCE_HIGH 2 +#define USBA_SPEED_CFG_FORCE_FULL 3 + +/* Constants for EPT_SIZE */ +#define USBA_EPT_SIZE_8 0 +#define USBA_EPT_SIZE_16 1 +#define USBA_EPT_SIZE_32 2 +#define USBA_EPT_SIZE_64 3 +#define USBA_EPT_SIZE_128 4 +#define USBA_EPT_SIZE_256 5 +#define USBA_EPT_SIZE_512 6 +#define USBA_EPT_SIZE_1024 7 + +/* Constants for EPT_TYPE */ +#define USBA_EPT_TYPE_CONTROL 0 +#define USBA_EPT_TYPE_ISO 1 +#define USBA_EPT_TYPE_BULK 2 +#define USBA_EPT_TYPE_INT 3 + +/* Constants for BK_NUMBER */ +#define USBA_BK_NUMBER_ZERO 0 +#define USBA_BK_NUMBER_ONE 1 +#define USBA_BK_NUMBER_DOUBLE 2 +#define USBA_BK_NUMBER_TRIPLE 3 + +/* Bit manipulation macros */ +#define USBA_BF(name, value) \ + (((value) & ((1 << USBA_##name##_SIZE) - 1)) \ + << USBA_##name##_OFFSET) +#define USBA_BFEXT(name, value) \ + (((value) >> USBA_##name##_OFFSET) \ + & ((1 << USBA_##name##_SIZE) - 1)) +#define USBA_BFINS(name, value, old) \ + (((old) & ~(((1 << USBA_##name##_SIZE) - 1) \ + << USBA_##name##_OFFSET)) \ + | USBA_BF(name, value)) + +/* Register access macros */ +#define usba_readl(udc, reg) \ + __raw_readl((udc)->regs + USBA_##reg) +#define usba_writel(udc, reg, value) \ + __raw_writel((value), (udc)->regs + USBA_##reg) +#define usba_ep_readl(ep, reg) \ + __raw_readl((ep)->ep_regs + USBA_EPT_##reg) +#define usba_ep_writel(ep, reg, value) \ + __raw_writel((value), (ep)->ep_regs + USBA_EPT_##reg) +#define usba_dma_readl(ep, reg) \ + __raw_readl((ep)->dma_regs + USBA_DMA_##reg) +#define usba_dma_writel(ep, reg, value) \ + __raw_writel((value), (ep)->dma_regs + USBA_DMA_##reg) + +/* Calculate base address for a given endpoint or DMA controller */ +#define USBA_EPT_BASE(x) (0x100 + (x) * 0x20) +#define USBA_DMA_BASE(x) (0x300 + (x) * 0x10) +#define USBA_FIFO_BASE(x) ((x) << 16) + +/* Synth parameters */ +#define USBA_NR_ENDPOINTS 7 + +#define EP0_FIFO_SIZE 64 +#define EP0_EPT_SIZE USBA_EPT_SIZE_64 +#define EP0_NR_BANKS 1 + +#define DBG_ERR 0x0001 /* report all error returns */ +#define DBG_HW 0x0002 /* debug hardware initialization */ +#define DBG_GADGET 0x0004 /* calls to/from gadget driver */ +#define DBG_INT 0x0008 /* interrupts */ +#define DBG_BUS 0x0010 /* report changes in bus state */ +#define DBG_QUEUE 0x0020 /* debug request queue processing */ +#define DBG_FIFO 0x0040 /* debug FIFO contents */ +#define DBG_DMA 0x0080 /* debug DMA handling */ +#define DBG_REQ 0x0100 /* print out queued request length */ +#define DBG_ALL 0xffff +#define DBG_NONE 0x0000 + +#define DEBUG_LEVEL (DBG_ERR) + +#define DBG(level, fmt, ...) \ + do { \ + if ((level) & DEBUG_LEVEL) \ + debug("udc: " fmt, ## __VA_ARGS__); \ + } while (0) + +enum usba_ctrl_state { + WAIT_FOR_SETUP, + DATA_STAGE_IN, + DATA_STAGE_OUT, + STATUS_STAGE_IN, + STATUS_STAGE_OUT, + STATUS_STAGE_ADDR, + STATUS_STAGE_TEST, +}; + +struct usba_dma_desc { + dma_addr_t next; + dma_addr_t addr; + u32 ctrl; +}; + +struct usba_ep { + int state; + void *ep_regs; + void *dma_regs; + void *fifo; + struct usb_ep ep; + struct usba_udc *udc; + + struct list_head queue; + + u16 fifo_size; + u8 nr_banks; + u8 index; + unsigned int can_dma:1; + unsigned int can_isoc:1; + unsigned int is_isoc:1; + unsigned int is_in:1; + + const struct usb_endpoint_descriptor *desc; +}; + +struct usba_request { + struct usb_request req; + struct list_head queue; + + u32 ctrl; + + unsigned int submitted:1; + unsigned int last_transaction:1; + unsigned int using_dma:1; + unsigned int mapped:1; +}; + +struct usba_udc { + void *regs; + void *fifo; + + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct platform_device *pdev; + int irq; + int vbus_pin; + int vbus_pin_inverted; + int num_ep; + struct usba_ep *usba_ep; + + u16 devstatus; + + u16 test_mode; + int vbus_prev; +}; + +static inline struct usba_ep *to_usba_ep(struct usb_ep *ep) +{ + return container_of(ep, struct usba_ep, ep); +} + +static inline struct usba_request *to_usba_req(struct usb_request *req) +{ + return container_of(req, struct usba_request, req); +} + +static inline struct usba_udc *to_usba_udc(struct usb_gadget *gadget) +{ + return container_of(gadget, struct usba_udc, gadget); +} + +#define ep_is_control(ep) ((ep)->index == 0) +#define ep_is_idle(ep) ((ep)->state == EP_STATE_IDLE) + +#endif /* __LINUX_USB_GADGET_USBA_UDC_H */ diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c index f563afe..014a679 100644 --- a/drivers/usb/gadget/config.c +++ b/drivers/usb/gadget/config.c @@ -10,6 +10,7 @@ */ #include <common.h> +#include <asm/unaligned.h> #include <asm/errno.h> #include <linux/list.h> #include <linux/string.h> @@ -86,7 +87,8 @@ int usb_gadget_config_buf( /* config descriptor first */ if (length < USB_DT_CONFIG_SIZE || !desc) return -EINVAL; - *cp = *config; + /* config need not be aligned */ + memcpy(cp, config, sizeof(*cp)); /* then interface/endpoint/class/vendor/... */ len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8 *)buf, @@ -100,7 +102,7 @@ int usb_gadget_config_buf( /* patch up the config descriptor */ cp->bLength = USB_DT_CONFIG_SIZE; cp->bDescriptorType = USB_DT_CONFIG; - cp->wTotalLength = cpu_to_le16(len); + put_unaligned_le16(len, &cp->wTotalLength); cp->bmAttributes |= USB_CONFIG_ATT_ONE; return len; } diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 579893c..700d5fb 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -849,9 +849,10 @@ static struct usb_gadget_strings stringtab = { }; /*============================================================================*/ -static u8 control_req[USB_BUFSIZ]; +DEFINE_CACHE_ALIGN_BUFFER(u8, control_req, USB_BUFSIZ); + #if defined(CONFIG_USB_ETH_CDC) || defined(CONFIG_USB_ETH_RNDIS) -static u8 status_req[STATUS_BYTECOUNT] __attribute__ ((aligned(4))); +DEFINE_CACHE_ALIGN_BUFFER(u8, status_req, STATUS_BYTECOUNT); #endif diff --git a/drivers/usb/gadget/f_dfu.h b/drivers/usb/gadget/f_dfu.h index 34a4dde..cc2c455 100644 --- a/drivers/usb/gadget/f_dfu.h +++ b/drivers/usb/gadget/f_dfu.h @@ -82,7 +82,4 @@ struct dfu_function_descriptor { __le16 wTransferSize; __le16 bcdDFUVersion; } __packed; - -/* configuration-specific linkup */ -int dfu_add(struct usb_configuration *c); #endif /* __F_DFU_H_ */ diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c index a3e05a8..40868c0 100644 --- a/drivers/usb/gadget/g_dnl.c +++ b/drivers/usb/gadget/g_dnl.c @@ -7,7 +7,6 @@ * SPDX-License-Identifier: GPL-2.0+ */ -#include <errno.h> #include <common.h> #include <malloc.h> @@ -15,11 +14,11 @@ #include <part.h> #include <g_dnl.h> -#include "f_dfu.h" +#include <usb_mass_storage.h> +#include <dfu.h> #include "gadget_chips.h" #include "composite.c" -#include "f_mass_storage.c" /* * One needs to define the following: diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index fdad739..3ae04c0 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -36,6 +36,12 @@ #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 #endif +/* + * EHCI spec page 20 says that the HC may take up to 16 uFrames (= 4ms) to halt. + * Let's time out after 8 to have a little safety margin on top of that. + */ +#define HCHALT_TIMEOUT (8 * 1000) + static struct ehci_ctrl ehcic[CONFIG_USB_MAX_CONTROLLER_COUNT]; #define ALIGN_END_ADDR(type, ptr, size) \ @@ -190,6 +196,36 @@ out: return ret; } +static int ehci_shutdown(struct ehci_ctrl *ctrl) +{ + int i, ret = 0; + uint32_t cmd, reg; + + cmd = ehci_readl(&ctrl->hcor->or_usbcmd); + cmd &= ~(CMD_PSE | CMD_ASE); + ehci_writel(&ctrl->hcor->or_usbcmd, cmd); + ret = handshake(&ctrl->hcor->or_usbsts, STS_ASS | STS_PSS, 0, + 100 * 1000); + + if (!ret) { + for (i = 0; i < CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS; i++) { + reg = ehci_readl(&ctrl->hcor->or_portsc[i]); + reg |= EHCI_PS_SUSP; + ehci_writel(&ctrl->hcor->or_portsc[i], reg); + } + + cmd &= ~CMD_RUN; + ehci_writel(&ctrl->hcor->or_usbcmd, cmd); + ret = handshake(&ctrl->hcor->or_usbsts, STS_HALT, STS_HALT, + HCHALT_TIMEOUT); + } + + if (ret) + puts("EHCI failed to shut down host controller.\n"); + + return ret; +} + static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz) { uint32_t delta, next; @@ -808,6 +844,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer, } break; case USB_PORT_FEAT_TEST: + ehci_shutdown(ctrl); reg &= ~(0xf << 16); reg |= ((le16_to_cpu(req->index) >> 8) & 0xf) << 16; ehci_writel(status_reg, reg); @@ -878,6 +915,7 @@ unknown: int usb_lowlevel_stop(int index) { + ehci_shutdown(&ehcic[index]); return ehci_hcd_stop(index); } diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h index 3de30fc..978fdf9 100644 --- a/include/configs/am335x_evm.h +++ b/include/configs/am335x_evm.h @@ -100,6 +100,7 @@ "loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \ "importbootenv=echo Importing environment from mmc ...; " \ "env import -t $loadaddr $filesize\0" \ + "dfu_alt_info_ram=" DFU_ALT_INFO_RAM "\0" \ "ramargs=setenv bootargs console=${console} " \ "${optargs} " \ "root=${ramroot} " \ @@ -321,6 +322,11 @@ "kernel part 0 8;" \ "rootfs part 0 9" #endif +#define CONFIG_DFU_RAM +#define DFU_ALT_INFO_RAM \ + "kernel ram 0x80200000 0xD80000;" \ + "fdt ram 0x80F80000 0x80000;" \ + "ramdisk ram 0x81000000 0x4000000" /* * Default to using SPI for environment, etc. diff --git a/include/configs/sama5d3xek.h b/include/configs/sama5d3xek.h index 76fa500..79c0068 100644 --- a/include/configs/sama5d3xek.h +++ b/include/configs/sama5d3xek.h @@ -162,6 +162,14 @@ #define CONFIG_USB_STORAGE #endif +/* USB device */ +#define CONFIG_USB_GADGET +#define CONFIG_USB_GADGET_DUALSPEED +#define CONFIG_USB_GADGET_ATMEL_USBA +#define CONFIG_USB_ETHER +#define CONFIG_USB_ETH_RNDIS +#define CONFIG_USBNET_MANUFACTURER "Atmel SAMA5D3xEK" + #if defined(CONFIG_CMD_USB) || defined(CONFIG_CMD_MMC) #define CONFIG_CMD_FAT #endif diff --git a/include/dfu.h b/include/dfu.h index 47b9055..b2ecf1b 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -14,11 +14,13 @@ #include <common.h> #include <linux/list.h> #include <mmc.h> +#include <linux/usb/composite.h> enum dfu_device_type { DFU_DEV_MMC = 1, DFU_DEV_ONENAND, DFU_DEV_NAND, + DFU_DEV_RAM, }; enum dfu_layout { @@ -27,6 +29,12 @@ enum dfu_layout { DFU_FS_EXT2, DFU_FS_EXT3, DFU_FS_EXT4, + DFU_RAM_ADDR, +}; + +enum dfu_op { + DFU_OP_READ = 1, + DFU_OP_WRITE, }; struct mmc_internal_data { @@ -51,6 +59,11 @@ struct nand_internal_data { unsigned int ubi; }; +struct ram_internal_data { + void *start; + unsigned int size; +}; + static inline unsigned int get_mmc_blk_size(int dev) { return find_mmc_device(dev)->read_bl_len; @@ -62,7 +75,7 @@ static inline unsigned int get_mmc_blk_size(int dev) #define CONFIG_SYS_DFU_DATA_BUF_SIZE (1024*1024*8) /* 8 MiB */ #endif #ifndef CONFIG_SYS_DFU_MAX_FILE_SIZE -#define CONFIG_SYS_DFU_MAX_FILE_SIZE (4 << 20) /* 4 MiB */ +#define CONFIG_SYS_DFU_MAX_FILE_SIZE CONFIG_SYS_DFU_DATA_BUF_SIZE #endif struct dfu_entity { @@ -76,6 +89,7 @@ struct dfu_entity { union { struct mmc_internal_data mmc; struct nand_internal_data nand; + struct ram_internal_data ram; } data; int (*read_medium)(struct dfu_entity *dfu, @@ -113,6 +127,7 @@ struct dfu_entity *dfu_get_entity(int alt); char *dfu_extract_token(char** e, int *n); void dfu_trigger_reset(void); bool dfu_reset(void); +int dfu_init_env_entities(char *interface, int dev); int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num); int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num); @@ -137,4 +152,22 @@ static inline int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s) } #endif +#ifdef CONFIG_DFU_RAM +extern int dfu_fill_entity_ram(struct dfu_entity *dfu, char *s); +#else +static inline int dfu_fill_entity_ram(struct dfu_entity *dfu, char *s) +{ + puts("RAM support not available!\n"); + return -1; +} +#endif + +#ifdef CONFIG_DFU_FUNCTION +int dfu_add(struct usb_configuration *c); +#else +int dfu_add(struct usb_configuration *c) +{ + return 0; +} +#endif #endif /* __DFU_ENTITY_H_ */ diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h new file mode 100644 index 0000000..be29ef0 --- /dev/null +++ b/include/linux/usb/atmel_usba_udc.h @@ -0,0 +1,26 @@ +/* + * Platform data definitions for Atmel USBA gadget driver + * [Original from Linux kernel: include/linux/usb/atmel_usba_udc.h] + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef __LINUX_USB_USBA_H__ +#define __LINUX_USB_USBA_H__ + +struct usba_ep_data { + char *name; + int index; + int fifo_size; + int nr_banks; + int can_dma; + int can_isoc; +}; + +struct usba_platform_data { + int num_ep; + struct usba_ep_data *ep; +}; + +extern int usba_udc_probe(struct usba_platform_data *pdata); + +#endif /* __LINUX_USB_USBA_H */ diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 220d068..a8a5763 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -18,6 +18,7 @@ #ifndef __LINUX_USB_GADGET_H #define __LINUX_USB_GADGET_H +#include <errno.h> #include <linux/list.h> struct usb_ep; diff --git a/include/usb_mass_storage.h b/include/usb_mass_storage.h index 35cdcc3..e08deb4 100644 --- a/include/usb_mass_storage.h +++ b/include/usb_mass_storage.h @@ -11,6 +11,7 @@ #define SECTOR_SIZE 0x200 #include <mmc.h> +#include <linux/usb/composite.h> struct ums_device { struct mmc *mmc; @@ -39,4 +40,12 @@ extern struct ums_board_info *board_ums_init(unsigned int, extern int usb_gadget_handle_interrupts(void); extern int fsg_main_thread(void *); +#ifdef CONFIG_USB_GADGET_MASS_STORAGE +int fsg_add(struct usb_configuration *c); +#else +int fsg_add(struct usb_configuration *c) +{ + return 0; +} +#endif #endif /* __USB_MASS_STORAGE_H__ */ |