| /* |
| * Copyright (C) 2007 by Analog Devices, Inc. |
| * |
| * The Inventra Controller Driver for Linux is free software; you |
| * can redistribute it and/or modify it under the terms of the GNU |
| * General Public License version 2 as published by the Free Software |
| * Foundation. |
| */ |
| |
| #ifndef __MUSB_BLACKFIN_H__ |
| #define __MUSB_BLACKFIN_H__ |
| |
| /* |
| * Blackfin specific definitions |
| */ |
| |
| /* Anomalies notes: |
| * |
| * 05000450 - USB DMA Mode 1 Short Packet Data Corruption: |
| * MUSB driver is designed to transfer buffer of N * maxpacket size |
| * in DMA mode 1 and leave the rest of the data to the next |
| * transfer in DMA mode 0, so we never transmit a short packet in |
| * DMA mode 1. |
| * |
| * 05000463 - This anomaly doesn't affect this driver since it |
| * never uses L1 or L2 memory as data destination. |
| * |
| * 05000464 - This anomaly doesn't affect this driver since it |
| * never uses L1 or L2 memory as data source. |
| * |
| * 05000465 - The anomaly can be seen when SCLK is over 100 MHz, and there is |
| * no way to workaround for bulk endpoints. Since the wMaxPackSize |
| * of bulk is less than or equal to 512, while the fifo size of |
| * endpoint 5, 6, 7 is 1024, the double buffer mode is enabled |
| * automatically when these endpoints are used for bulk OUT. |
| * |
| * 05000466 - This anomaly doesn't affect this driver since it never mixes |
| * concurrent DMA and core accesses to the TX endpoint FIFOs. |
| * |
| * 05000467 - The workaround for this anomaly will introduce another |
| * anomaly - 05000465. |
| */ |
| |
| /* The Mentor USB DMA engine on BF52x (silicon v0.0 and v0.1) seems to be |
| * unstable in host mode. This may be caused by Anomaly 05000380. After |
| * digging out the root cause, we will change this number accordingly. |
| * So, need to either use silicon v0.2+ or disable DMA mode in MUSB. |
| */ |
| #if ANOMALY_05000380 && defined(CONFIG_BF52x) && \ |
| defined(CONFIG_USB_MUSB_HDRC) && !defined(CONFIG_MUSB_PIO_ONLY) |
| # error "Please use PIO mode in MUSB driver on bf52x chip v0.0 and v0.1" |
| #endif |
| |
| #undef DUMP_FIFO_DATA |
| #ifdef DUMP_FIFO_DATA |
| static void dump_fifo_data(u8 *buf, u16 len) |
| { |
| u8 *tmp = buf; |
| int i; |
| |
| for (i = 0; i < len; i++) { |
| if (!(i % 16) && i) |
| pr_debug("\n"); |
| pr_debug("%02x ", *tmp++); |
| } |
| pr_debug("\n"); |
| } |
| #else |
| #define dump_fifo_data(buf, len) do {} while (0) |
| #endif |
| |
| |
| #define USB_DMA_BASE USB_DMA_INTERRUPT |
| #define USB_DMAx_CTRL 0x04 |
| #define USB_DMAx_ADDR_LOW 0x08 |
| #define USB_DMAx_ADDR_HIGH 0x0C |
| #define USB_DMAx_COUNT_LOW 0x10 |
| #define USB_DMAx_COUNT_HIGH 0x14 |
| |
| #define USB_DMA_REG(ep, reg) (USB_DMA_BASE + 0x20 * ep + reg) |
| |
| /* Almost 1 second */ |
| #define TIMER_DELAY (1 * HZ) |
| |
| static struct timer_list musb_conn_timer; |
| |
| #endif /* __MUSB_BLACKFIN_H__ */ |