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path: root/drivers/usb/host/isp116x-hcd.c
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Diffstat (limited to 'drivers/usb/host/isp116x-hcd.c')
-rw-r--r--drivers/usb/host/isp116x-hcd.c1441
1 files changed, 1441 insertions, 0 deletions
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
new file mode 100644
index 0000000..348e404
--- /dev/null
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -0,0 +1,1441 @@
+/*
+ * ISP116x HCD (Host Controller Driver) for u-boot.
+ *
+ * Copyright (C) 2006-2007 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2006-2007 Eurotech S.p.A. <info@eurotech.it>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ * Derived in part from the SL811 HCD driver "u-boot/drivers/usb/sl811_usb.c"
+ * (original copyright message follows):
+ *
+ * (C) Copyright 2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * This code is based on linux driver for sl811hs chip, source at
+ * drivers/usb/host/sl811.c:
+ *
+ * SL811 Host Controller Interface driver for USB.
+ *
+ * Copyright (c) 2003/06, Courage Co., Ltd.
+ *
+ * Based on:
+ * 1.uhci.c by Linus Torvalds, Johannes Erdfelt, Randy Dunlap,
+ * Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber,
+ * Adam Richter, Gregory P. Smith;
+ * 2.Original SL811 driver (hc_sl811.o) by Pei Liu <pbl@cypress.com>
+ * 3.Rewrited as sl811.o by Yin Aihua <yinah:couragetech.com.cn>
+ *
+ * [[GNU/GPL disclaimer]]
+ *
+ * and in part from AU1x00 OHCI HCD driver "u-boot/cpu/mips/au1x00_usb_ohci.c"
+ * (original copyright message follows):
+ *
+ * URB OHCI HCD (Host Controller Driver) for USB on the AU1x00.
+ *
+ * (C) Copyright 2003
+ * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
+ *
+ * [[GNU/GPL disclaimer]]
+ *
+ * Note: Part of this code has been derived from linux
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <usb.h>
+#include <malloc.h>
+#include <linux/list.h>
+
+/*
+ * ISP116x chips require certain delays between accesses to its
+ * registers. The following timing options exist.
+ *
+ * 1. Configure your memory controller (the best)
+ * 2. Use ndelay (easiest, poorest). For that, enable the following macro.
+ *
+ * Value is in microseconds.
+ */
+#ifdef ISP116X_HCD_USE_UDELAY
+#define UDELAY 1
+#endif
+
+/*
+ * On some (slowly?) machines an extra delay after data packing into
+ * controller's FIFOs is required, * otherwise you may get the following
+ * error:
+ *
+ * uboot> usb start
+ * (Re)start USB...
+ * USB: scanning bus for devices... isp116x: isp116x_submit_job: CTL:TIMEOUT
+ * isp116x: isp116x_submit_job: ****** FIFO not ready! ******
+ *
+ * USB device not responding, giving up (status=4)
+ * isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ * isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ * isp116x: isp116x_submit_job: ****** FIFO not empty! ******
+ * 3 USB Device(s) found
+ * scanning bus for storage devices... 0 Storage Device(s) found
+ *
+ * Value is in milliseconds.
+ */
+#ifdef ISP116X_HCD_USE_EXTRA_DELAY
+#define EXTRA_DELAY 2
+#endif
+
+/*
+ * Enable the following defines if you wish enable debugging messages.
+ */
+#undef DEBUG /* enable debugging messages */
+#undef TRACE /* enable tracing code */
+#undef VERBOSE /* verbose debugging messages */
+
+#include "isp116x.h"
+
+#define DRIVER_VERSION "08 Jan 2007"
+static const char hcd_name[] = "isp116x-hcd";
+
+struct isp116x isp116x_dev;
+struct isp116x_platform_data isp116x_board;
+static int got_rhsc; /* root hub status change */
+struct usb_device *devgone; /* device which was disconnected */
+static int rh_devnum; /* address of Root Hub endpoint */
+
+/* ------------------------------------------------------------------------- */
+
+#define ALIGN(x,a) (((x)+(a)-1UL)&~((a)-1UL))
+#define min_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x < __y ? __x : __y; })
+
+/* ------------------------------------------------------------------------- */
+
+static int isp116x_reset(struct isp116x *isp116x);
+
+/* --- Debugging functions ------------------------------------------------- */
+
+#define isp116x_show_reg(d, r) { \
+ if ((r) < 0x20) { \
+ DBG("%-12s[%02x]: %08x", #r, \
+ r, isp116x_read_reg32(d, r)); \
+ } else { \
+ DBG("%-12s[%02x]: %04x", #r, \
+ r, isp116x_read_reg16(d, r)); \
+ } \
+}
+
+#define isp116x_show_regs(d) { \
+ isp116x_show_reg(d, HCREVISION); \
+ isp116x_show_reg(d, HCCONTROL); \
+ isp116x_show_reg(d, HCCMDSTAT); \
+ isp116x_show_reg(d, HCINTSTAT); \
+ isp116x_show_reg(d, HCINTENB); \
+ isp116x_show_reg(d, HCFMINTVL); \
+ isp116x_show_reg(d, HCFMREM); \
+ isp116x_show_reg(d, HCFMNUM); \
+ isp116x_show_reg(d, HCLSTHRESH); \
+ isp116x_show_reg(d, HCRHDESCA); \
+ isp116x_show_reg(d, HCRHDESCB); \
+ isp116x_show_reg(d, HCRHSTATUS); \
+ isp116x_show_reg(d, HCRHPORT1); \
+ isp116x_show_reg(d, HCRHPORT2); \
+ isp116x_show_reg(d, HCHWCFG); \
+ isp116x_show_reg(d, HCDMACFG); \
+ isp116x_show_reg(d, HCXFERCTR); \
+ isp116x_show_reg(d, HCuPINT); \
+ isp116x_show_reg(d, HCuPINTENB); \
+ isp116x_show_reg(d, HCCHIPID); \
+ isp116x_show_reg(d, HCSCRATCH); \
+ isp116x_show_reg(d, HCITLBUFLEN); \
+ isp116x_show_reg(d, HCATLBUFLEN); \
+ isp116x_show_reg(d, HCBUFSTAT); \
+ isp116x_show_reg(d, HCRDITL0LEN); \
+ isp116x_show_reg(d, HCRDITL1LEN); \
+}
+
+#if defined(TRACE)
+
+static int isp116x_get_current_frame_number(struct usb_device *usb_dev)
+{
+ struct isp116x *isp116x = &isp116x_dev;
+
+ return isp116x_read_reg32(isp116x, HCFMNUM);
+}
+
+static void dump_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int len, char *str)
+{
+#if defined(VERBOSE)
+ int i;
+#endif
+
+ DBG("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d stat:%#lx",
+ str,
+ isp116x_get_current_frame_number(dev),
+ usb_pipedevice(pipe),
+ usb_pipeendpoint(pipe),
+ usb_pipeout(pipe) ? 'O' : 'I',
+ usb_pipetype(pipe) < 2 ?
+ (usb_pipeint(pipe) ?
+ "INTR" : "ISOC") :
+ (usb_pipecontrol(pipe) ? "CTRL" : "BULK"), len, dev->status);
+#if defined(VERBOSE)
+ if (len > 0 && buffer) {
+ printf(__FILE__ ": data(%d):", len);
+ for (i = 0; i < 16 && i < len; i++)
+ printf(" %02x", ((__u8 *) buffer)[i]);
+ printf("%s\n", i < len ? "..." : "");
+ }
+#endif
+}
+
+#define PTD_DIR_STR(ptd) ({char __c; \
+ switch(PTD_GET_DIR(ptd)){ \
+ case 0: __c = 's'; break; \
+ case 1: __c = 'o'; break; \
+ default: __c = 'i'; break; \
+ }; __c;})
+
+/*
+ Dump PTD info. The code documents the format
+ perfectly, right :)
+*/
+static inline void dump_ptd(struct ptd *ptd)
+{
+#if defined(VERBOSE)
+ int k;
+#endif
+
+ DBG("PTD(ext) : cc:%x %d%c%d %d,%d,%d t:%x %x%x%x",
+ PTD_GET_CC(ptd),
+ PTD_GET_FA(ptd), PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
+ PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
+ PTD_GET_TOGGLE(ptd),
+ PTD_GET_ACTIVE(ptd), PTD_GET_SPD(ptd), PTD_GET_LAST(ptd));
+#if defined(VERBOSE)
+ printf("isp116x: %s: PTD(byte): ", __FUNCTION__);
+ for (k = 0; k < sizeof(struct ptd); ++k)
+ printf("%02x ", ((u8 *) ptd)[k]);
+ printf("\n");
+#endif
+}
+
+static inline void dump_ptd_data(struct ptd *ptd, u8 * buf, int type)
+{
+#if defined(VERBOSE)
+ int k;
+
+ if (type == 0 /* 0ut data */ ) {
+ printf("isp116x: %s: out data: ", __FUNCTION__);
+ for (k = 0; k < PTD_GET_LEN(ptd); ++k)
+ printf("%02x ", ((u8 *) buf)[k]);
+ printf("\n");
+ }
+ if (type == 1 /* 1n data */ ) {
+ printf("isp116x: %s: in data: ", __FUNCTION__);
+ for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
+ printf("%02x ", ((u8 *) buf)[k]);
+ printf("\n");
+ }
+
+ if (PTD_GET_LAST(ptd))
+ DBG("--- last PTD ---");
+#endif
+}
+
+#else
+
+#define dump_msg(dev, pipe, buffer, len, str) do { } while (0)
+#define dump_pkt(dev, pipe, buffer, len, setup, str, small) do {} while (0)
+
+#define dump_ptd(ptd) do {} while (0)
+#define dump_ptd_data(ptd, buf, type) do {} while (0)
+
+#endif
+
+/* --- Virtual Root Hub ---------------------------------------------------- */
+
+/* Device descriptor */
+static __u8 root_hub_dev_des[] = {
+ 0x12, /* __u8 bLength; */
+ 0x01, /* __u8 bDescriptorType; Device */
+ 0x10, /* __u16 bcdUSB; v1.1 */
+ 0x01,
+ 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 bDeviceSubClass; */
+ 0x00, /* __u8 bDeviceProtocol; */
+ 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
+ 0x00, /* __u16 idVendor; */
+ 0x00,
+ 0x00, /* __u16 idProduct; */
+ 0x00,
+ 0x00, /* __u16 bcdDevice; */
+ 0x00,
+ 0x00, /* __u8 iManufacturer; */
+ 0x01, /* __u8 iProduct; */
+ 0x00, /* __u8 iSerialNumber; */
+ 0x01 /* __u8 bNumConfigurations; */
+};
+
+/* Configuration descriptor */
+static __u8 root_hub_config_des[] = {
+ 0x09, /* __u8 bLength; */
+ 0x02, /* __u8 bDescriptorType; Configuration */
+ 0x19, /* __u16 wTotalLength; */
+ 0x00,
+ 0x01, /* __u8 bNumInterfaces; */
+ 0x01, /* __u8 bConfigurationValue; */
+ 0x00, /* __u8 iConfiguration; */
+ 0x40, /* __u8 bmAttributes;
+ Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
+ 0x00, /* __u8 MaxPower; */
+
+ /* interface */
+ 0x09, /* __u8 if_bLength; */
+ 0x04, /* __u8 if_bDescriptorType; Interface */
+ 0x00, /* __u8 if_bInterfaceNumber; */
+ 0x00, /* __u8 if_bAlternateSetting; */
+ 0x01, /* __u8 if_bNumEndpoints; */
+ 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 if_bInterfaceSubClass; */
+ 0x00, /* __u8 if_bInterfaceProtocol; */
+ 0x00, /* __u8 if_iInterface; */
+
+ /* endpoint */
+ 0x07, /* __u8 ep_bLength; */
+ 0x05, /* __u8 ep_bDescriptorType; Endpoint */
+ 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
+ 0x03, /* __u8 ep_bmAttributes; Interrupt */
+ 0x00, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
+ 0x02,
+ 0xff /* __u8 ep_bInterval; 255 ms */
+};
+
+static unsigned char root_hub_str_index0[] = {
+ 0x04, /* __u8 bLength; */
+ 0x03, /* __u8 bDescriptorType; String-descriptor */
+ 0x09, /* __u8 lang ID */
+ 0x04, /* __u8 lang ID */
+};
+
+static unsigned char root_hub_str_index1[] = {
+ 0x22, /* __u8 bLength; */
+ 0x03, /* __u8 bDescriptorType; String-descriptor */
+ 'I', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'S', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'P', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ '1', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ '1', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ '6', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'x', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ ' ', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'R', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'o', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'o', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 't', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ ' ', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'H', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'u', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'b', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+};
+
+/*
+ * Hub class-specific descriptor is constructed dynamically
+ */
+
+/* --- Virtual root hub management functions ------------------------------- */
+
+static int rh_check_port_status(struct isp116x *isp116x)
+{
+ u32 temp, ndp, i;
+ int res;
+
+ res = -1;
+ temp = isp116x_read_reg32(isp116x, HCRHSTATUS);
+ ndp = (temp & RH_A_NDP);
+ for (i = 0; i < ndp; i++) {
+ temp = isp116x_read_reg32(isp116x, HCRHPORT1 + i);
+ /* check for a device disconnect */
+ if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
+ (RH_PS_PESC | RH_PS_CSC)) && ((temp & RH_PS_CCS) == 0)) {
+ res = i;
+ break;
+ }
+ }
+ return res;
+}
+
+/* --- HC management functions --------------------------------------------- */
+
+/* Write len bytes to fifo, pad till 32-bit boundary
+ */
+static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+ u8 *dp = (u8 *) buf;
+ u16 *dp2 = (u16 *) buf;
+ u16 w;
+ int quot = len % 4;
+
+ if ((unsigned long)dp2 & 1) {
+ /* not aligned */
+ for (; len > 1; len -= 2) {
+ w = *dp++;
+ w |= *dp++ << 8;
+ isp116x_raw_write_data16(isp116x, w);
+ }
+ if (len)
+ isp116x_write_data16(isp116x, (u16) * dp);
+ } else {
+ /* aligned */
+ for (; len > 1; len -= 2)
+ isp116x_raw_write_data16(isp116x, *dp2++);
+ if (len)
+ isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2));
+ }
+ if (quot == 1 || quot == 2)
+ isp116x_raw_write_data16(isp116x, 0);
+}
+
+/* Read len bytes from fifo and then read till 32-bit boundary
+ */
+static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len)
+{
+ u8 *dp = (u8 *) buf;
+ u16 *dp2 = (u16 *) buf;
+ u16 w;
+ int quot = len % 4;
+
+ if ((unsigned long)dp2 & 1) {
+ /* not aligned */
+ for (; len > 1; len -= 2) {
+ w = isp116x_raw_read_data16(isp116x);
+ *dp++ = w & 0xff;
+ *dp++ = (w >> 8) & 0xff;
+ }
+ if (len)
+ *dp = 0xff & isp116x_read_data16(isp116x);
+ } else {
+ /* aligned */
+ for (; len > 1; len -= 2)
+ *dp2++ = isp116x_raw_read_data16(isp116x);
+ if (len)
+ *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x);
+ }
+ if (quot == 1 || quot == 2)
+ isp116x_raw_read_data16(isp116x);
+}
+
+/* Write PTD's and data for scheduled transfers into the fifo ram.
+ * Fifo must be empty and ready */
+static void pack_fifo(struct isp116x *isp116x, struct usb_device *dev,
+ unsigned long pipe, struct ptd *ptd, int n, void *data,
+ int len)
+{
+ int buflen = n * sizeof(struct ptd) + len;
+ int i, done;
+
+ DBG("--- pack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
+
+ isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+ isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+ isp116x_write_addr(isp116x, HCATLPORT | ISP116x_WRITE_OFFSET);
+
+ done = 0;
+ for (i = 0; i < n; i++) {
+ DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
+
+ dump_ptd(&ptd[i]);
+ isp116x_write_data16(isp116x, ptd[i].count);
+ isp116x_write_data16(isp116x, ptd[i].mps);
+ isp116x_write_data16(isp116x, ptd[i].len);
+ isp116x_write_data16(isp116x, ptd[i].faddr);
+
+ dump_ptd_data(&ptd[i], (__u8 *) data + done, 0);
+ write_ptddata_to_fifo(isp116x,
+ (__u8 *) data + done,
+ PTD_GET_LEN(&ptd[i]));
+
+ done += PTD_GET_LEN(&ptd[i]);
+ }
+}
+
+/* Read the processed PTD's and data from fifo ram back to URBs' buffers.
+ * Fifo must be full and done */
+static int unpack_fifo(struct isp116x *isp116x, struct usb_device *dev,
+ unsigned long pipe, struct ptd *ptd, int n, void *data,
+ int len)
+{
+ int buflen = n * sizeof(struct ptd) + len;
+ int i, done, cc, ret;
+
+ isp116x_write_reg16(isp116x, HCuPINT, HCuPINT_AIIEOT);
+ isp116x_write_reg16(isp116x, HCXFERCTR, buflen);
+ isp116x_write_addr(isp116x, HCATLPORT);
+
+ ret = TD_CC_NOERROR;
+ done = 0;
+ for (i = 0; i < n; i++) {
+ DBG("i=%d - done=%d - len=%d", i, done, PTD_GET_LEN(&ptd[i]));
+
+ ptd[i].count = isp116x_read_data16(isp116x);
+ ptd[i].mps = isp116x_read_data16(isp116x);
+ ptd[i].len = isp116x_read_data16(isp116x);
+ ptd[i].faddr = isp116x_read_data16(isp116x);
+ dump_ptd(&ptd[i]);
+
+ read_ptddata_from_fifo(isp116x,
+ (__u8 *) data + done,
+ PTD_GET_LEN(&ptd[i]));
+ dump_ptd_data(&ptd[i], (__u8 *) data + done, 1);
+
+ done += PTD_GET_LEN(&ptd[i]);
+
+ cc = PTD_GET_CC(&ptd[i]);
+
+ /* Data underrun means basically that we had more buffer space than
+ * the function had data. It is perfectly normal but upper levels have
+ * to know how much we actually transferred.
+ */
+ if (cc == TD_NOTACCESSED ||
+ (cc != TD_CC_NOERROR && (ret == TD_CC_NOERROR || ret == TD_DATAUNDERRUN)))
+ ret = cc;
+ }
+
+ DBG("--- unpack buffer %p - %d bytes (fifo %d) ---", data, len, buflen);
+
+ return ret;
+}
+
+/* Interrupt handling
+ */
+static int isp116x_interrupt(struct isp116x *isp116x)
+{
+ u16 irqstat;
+ u32 intstat;
+ int ret = 0;
+
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+ irqstat = isp116x_read_reg16(isp116x, HCuPINT);
+ isp116x_write_reg16(isp116x, HCuPINT, irqstat);
+ DBG(">>>>>> irqstat %x <<<<<<", irqstat);
+
+ if (irqstat & HCuPINT_ATL) {
+ DBG(">>>>>> HCuPINT_ATL <<<<<<");
+ udelay(500);
+ ret = 1;
+ }
+
+ if (irqstat & HCuPINT_OPR) {
+ intstat = isp116x_read_reg32(isp116x, HCINTSTAT);
+ isp116x_write_reg32(isp116x, HCINTSTAT, intstat);
+ DBG(">>>>>> HCuPINT_OPR %x <<<<<<", intstat);
+
+ if (intstat & HCINT_UE) {
+ ERR("unrecoverable error, controller disabled");
+
+ /* FIXME: be optimistic, hope that bug won't repeat
+ * often. Make some non-interrupt context restart the
+ * controller. Count and limit the retries though;
+ * either hardware or software errors can go forever...
+ */
+ isp116x_reset(isp116x);
+ ret = -1;
+ return -1;
+ }
+
+ if (intstat & HCINT_RHSC) {
+ got_rhsc = 1;
+ ret = 1;
+ /* When root hub or any of its ports is going
+ to come out of suspend, it may take more
+ than 10ms for status bits to stabilize. */
+ wait_ms(20);
+ }
+
+ if (intstat & HCINT_SO) {
+ ERR("schedule overrun");
+ ret = -1;
+ }
+
+ irqstat &= ~HCuPINT_OPR;
+ }
+
+ return ret;
+}
+
+/* With one PTD we can transfer almost 1K in one go;
+ * HC does the splitting into endpoint digestible transactions
+ */
+struct ptd ptd[1];
+
+static inline int max_transfer_len(struct usb_device *dev, unsigned long pipe)
+{
+ unsigned mpck = usb_maxpacket(dev, pipe);
+
+ /* One PTD can transfer 1023 bytes but try to always
+ * transfer multiples of endpoint buffer size
+ */
+ return 1023 / mpck * mpck;
+}
+
+/* Do an USB transfer
+ */
+static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
+ int dir, void *buffer, int len)
+{
+ struct isp116x *isp116x = &isp116x_dev;
+ int type = usb_pipetype(pipe);
+ int epnum = usb_pipeendpoint(pipe);
+ int max = usb_maxpacket(dev, pipe);
+ int dir_out = usb_pipeout(pipe);
+ int speed_low = usb_pipeslow(pipe);
+ int i, done = 0, stat, timeout, cc;
+
+ /* 500 frames or 0.5s timeout when function is busy and NAKs transactions for a while */
+ int retries = 500;
+
+ DBG("------------------------------------------------");
+ dump_msg(dev, pipe, buffer, len, "SUBMIT");
+ DBG("------------------------------------------------");
+
+ if (len >= 1024) {
+ ERR("Too big job");
+ dev->status = USB_ST_CRC_ERR;
+ return -1;
+ }
+
+ if (isp116x->disabled) {
+ ERR("EPIPE");
+ dev->status = USB_ST_CRC_ERR;
+ return -1;
+ }
+
+ /* device pulled? Shortcut the action. */
+ if (devgone == dev) {
+ ERR("ENODEV");
+ dev->status = USB_ST_CRC_ERR;
+ return USB_ST_CRC_ERR;
+ }
+
+ if (!max) {
+ ERR("pipesize for pipe %lx is zero", pipe);
+ dev->status = USB_ST_CRC_ERR;
+ return -1;
+ }
+
+ if (type == PIPE_ISOCHRONOUS) {
+ ERR("isochronous transfers not supported");
+ dev->status = USB_ST_CRC_ERR;
+ return -1;
+ }
+
+ /* FIFO not empty? */
+ if (isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_FULL) {
+ ERR("****** FIFO not empty! ******");
+ dev->status = USB_ST_BUF_ERR;
+ return -1;
+ }
+
+ retry:
+ isp116x_write_reg32(isp116x, HCINTSTAT, 0xff);
+
+ /* Prepare the PTD data */
+ ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK |
+ PTD_TOGGLE(usb_gettoggle(dev, epnum, dir_out));
+ ptd->mps = PTD_MPS(max) | PTD_SPD(speed_low) | PTD_EP(epnum) | PTD_LAST_MSK;
+ ptd->len = PTD_LEN(len) | PTD_DIR(dir);
+ ptd->faddr = PTD_FA(usb_pipedevice(pipe));
+
+retry_same:
+ /* Pack data into FIFO ram */
+ pack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
+#ifdef EXTRA_DELAY
+ wait_ms(EXTRA_DELAY);
+#endif
+
+ /* Start the data transfer */
+
+ /* Allow more time for a BULK device to react - some are slow */
+ if (usb_pipebulk(pipe))
+ timeout = 5000;
+ else
+ timeout = 100;
+
+ /* Wait for it to complete */
+ for (;;) {
+ /* Check whether the controller is done */
+ stat = isp116x_interrupt(isp116x);
+
+ if (stat < 0) {
+ dev->status = USB_ST_CRC_ERR;
+ break;
+ }
+ if (stat > 0)
+ break;
+
+ /* Check the timeout */
+ if (--timeout)
+ udelay(1);
+ else {
+ ERR("CTL:TIMEOUT ");
+ stat = USB_ST_CRC_ERR;
+ break;
+ }
+ }
+
+ /* We got an Root Hub Status Change interrupt */
+ if (got_rhsc) {
+ isp116x_show_regs(isp116x);
+
+ got_rhsc = 0;
+
+ /* Abuse timeout */
+ timeout = rh_check_port_status(isp116x);
+ if (timeout >= 0) {
+ /*
+ * FIXME! NOTE! AAAARGH!
+ * This is potentially dangerous because it assumes
+ * that only one device is ever plugged in!
+ */
+ devgone = dev;
+ }
+ }
+
+ /* Ok, now we can read transfer status */
+
+ /* FIFO not ready? */
+ if (!(isp116x_read_reg16(isp116x, HCBUFSTAT) & HCBUFSTAT_ATL_DONE)) {
+ ERR("****** FIFO not ready! ******");
+ dev->status = USB_ST_BUF_ERR;
+ return -1;
+ }
+
+ /* Unpack data from FIFO ram */
+ cc = unpack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
+
+ i = PTD_GET_COUNT(ptd);
+ done += i;
+ buffer += i;
+ len -= i;
+
+ /* There was some kind of real problem; Prepare the PTD again
+ * and retry from the failed transaction on
+ */
+ if (cc && cc != TD_NOTACCESSED && cc != TD_DATAUNDERRUN) {
+ if (retries >= 100) {
+ retries -= 100;
+ /* The chip will have toggled the toggle bit for the failed
+ * transaction too. We have to toggle it back.
+ */
+ usb_settoggle(dev, epnum, dir_out, !PTD_GET_TOGGLE(ptd));
+ goto retry;
+ }
+ }
+ /* "Normal" errors; TD_NOTACCESSED would mean in effect that the function have NAKed
+ * the transactions from the first on for the whole frame. It may be busy and we retry
+ * with the same PTD. PTD_ACTIVE (and not TD_NOTACCESSED) would mean that some of the
+ * PTD didn't make it because the function was busy or the frame ended before the PTD
+ * finished. We prepare the rest of the data and try again.
+ */
+ else if (cc == TD_NOTACCESSED || PTD_GET_ACTIVE(ptd) || (cc != TD_DATAUNDERRUN && PTD_GET_COUNT(ptd) < PTD_GET_LEN(ptd))) {
+ if (retries) {
+ --retries;
+ if (cc == TD_NOTACCESSED && PTD_GET_ACTIVE(ptd) && !PTD_GET_COUNT(ptd)) goto retry_same;
+ usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
+ goto retry;
+ }
+ }
+
+ if (cc != TD_CC_NOERROR && cc != TD_DATAUNDERRUN) {
+ DBG("****** completition code error %x ******", cc);
+ switch (cc) {
+ case TD_CC_BITSTUFFING:
+ dev->status = USB_ST_BIT_ERR;
+ break;
+ case TD_CC_STALL:
+ dev->status = USB_ST_STALLED;
+ break;
+ case TD_BUFFEROVERRUN:
+ case TD_BUFFERUNDERRUN:
+ dev->status = USB_ST_BUF_ERR;
+ break;
+ default:
+ dev->status = USB_ST_CRC_ERR;
+ }
+ return -cc;
+ }
+ else usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
+
+ dump_msg(dev, pipe, buffer, len, "SUBMIT(ret)");
+
+ dev->status = 0;
+ return done;
+}
+
+/* Adapted from au1x00_usb_ohci.c
+ */
+static int isp116x_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ struct devrequest *cmd)
+{
+ struct isp116x *isp116x = &isp116x_dev;
+ u32 tmp = 0;
+
+ int leni = transfer_len;
+ int len = 0;
+ int stat = 0;
+ u32 datab[4];
+ u8 *data_buf = (u8 *) datab;
+ u16 bmRType_bReq;
+ u16 wValue;
+ u16 wIndex;
+ u16 wLength;
+
+ if (usb_pipeint(pipe)) {
+ INFO("Root-Hub submit IRQ: NOT implemented");
+ return 0;
+ }
+
+ bmRType_bReq = cmd->requesttype | (cmd->request << 8);
+ wValue = swap_16(cmd->value);
+ wIndex = swap_16(cmd->index);
+ wLength = swap_16(cmd->length);
+
+ DBG("--- HUB ----------------------------------------");
+ DBG("submit rh urb, req=%x val=%#x index=%#x len=%d",
+ bmRType_bReq, wValue, wIndex, wLength);
+ dump_msg(dev, pipe, buffer, transfer_len, "RH");
+ DBG("------------------------------------------------");
+
+ switch (bmRType_bReq) {
+ case RH_GET_STATUS:
+ DBG("RH_GET_STATUS");
+
+ *(__u16 *) data_buf = swap_16(1);
+ len = 2;
+ break;
+
+ case RH_GET_STATUS | RH_INTERFACE:
+ DBG("RH_GET_STATUS | RH_INTERFACE");
+
+ *(__u16 *) data_buf = swap_16(0);
+ len = 2;
+ break;
+
+ case RH_GET_STATUS | RH_ENDPOINT:
+ DBG("RH_GET_STATUS | RH_ENDPOINT");
+
+ *(__u16 *) data_buf = swap_16(0);
+ len = 2;
+ break;
+
+ case RH_GET_STATUS | RH_CLASS:
+ DBG("RH_GET_STATUS | RH_CLASS");
+
+ tmp = isp116x_read_reg32(isp116x, HCRHSTATUS);
+
+ *(__u32 *) data_buf = swap_32(tmp & ~(RH_HS_CRWE | RH_HS_DRWE));
+ len = 4;
+ break;
+
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+ DBG("RH_GET_STATUS | RH_OTHER | RH_CLASS");
+
+ tmp = isp116x_read_reg32(isp116x, HCRHPORT1 + wIndex - 1);
+ *(__u32 *) data_buf = swap_32(tmp);
+ isp116x_show_regs(isp116x);
+ len = 4;
+ break;
+
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ DBG("RH_CLEAR_FEATURE | RH_ENDPOINT");
+
+ switch (wValue) {
+ case RH_ENDPOINT_STALL:
+ DBG("C_HUB_ENDPOINT_STALL");
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ DBG("RH_CLEAR_FEATURE | RH_CLASS");
+
+ switch (wValue) {
+ case RH_C_HUB_LOCAL_POWER:
+ DBG("C_HUB_LOCAL_POWER");
+ len = 0;
+ break;
+
+ case RH_C_HUB_OVER_CURRENT:
+ DBG("C_HUB_OVER_CURRENT");
+ isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_OCIC);
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ DBG("RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS");
+
+ switch (wValue) {
+ case RH_PORT_ENABLE:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_CCS);
+ len = 0;
+ break;
+
+ case RH_PORT_SUSPEND:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_POCI);
+ len = 0;
+ break;
+
+ case RH_PORT_POWER:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_LSDA);
+ len = 0;
+ break;
+
+ case RH_C_PORT_CONNECTION:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_CSC);
+ len = 0;
+ break;
+
+ case RH_C_PORT_ENABLE:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PESC);
+ len = 0;
+ break;
+
+ case RH_C_PORT_SUSPEND:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PSSC);
+ len = 0;
+ break;
+
+ case RH_C_PORT_OVER_CURRENT:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_POCI);
+ len = 0;
+ break;
+
+ case RH_C_PORT_RESET:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PRSC);
+ len = 0;
+ break;
+
+ default:
+ ERR("invalid wValue");
+ stat = USB_ST_STALLED;
+ }
+
+ isp116x_show_regs(isp116x);
+
+ break;
+
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ DBG("RH_SET_FEATURE | RH_OTHER | RH_CLASS");
+
+ switch (wValue) {
+ case RH_PORT_SUSPEND:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PSS);
+ len = 0;
+ break;
+
+ case RH_PORT_RESET:
+ /* Spin until any current reset finishes */
+ while (1) {
+ tmp =
+ isp116x_read_reg32(isp116x,
+ HCRHPORT1 + wIndex - 1);
+ if (!(tmp & RH_PS_PRS))
+ break;
+ wait_ms(1);
+ }
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PRS);
+ wait_ms(10);
+
+ len = 0;
+ break;
+
+ case RH_PORT_POWER:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PPS);
+ len = 0;
+ break;
+
+ case RH_PORT_ENABLE:
+ isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
+ RH_PS_PES);
+ len = 0;
+ break;
+
+ default:
+ ERR("invalid wValue");
+ stat = USB_ST_STALLED;
+ }
+
+ isp116x_show_regs(isp116x);
+
+ break;
+
+ case RH_SET_ADDRESS:
+ DBG("RH_SET_ADDRESS");
+
+ rh_devnum = wValue;
+ len = 0;
+ break;
+
+ case RH_GET_DESCRIPTOR:
+ DBG("RH_GET_DESCRIPTOR: %x, %d", wValue, wLength);
+
+ switch (wValue) {
+ case (USB_DT_DEVICE << 8): /* device descriptor */
+ len = min_t(unsigned int,
+ leni, min_t(unsigned int,
+ sizeof(root_hub_dev_des),
+ wLength));
+ data_buf = root_hub_dev_des;
+ break;
+
+ case (USB_DT_CONFIG << 8): /* configuration descriptor */
+ len = min_t(unsigned int,
+ leni, min_t(unsigned int,
+ sizeof(root_hub_config_des),
+ wLength));
+ data_buf = root_hub_config_des;
+ break;
+
+ case ((USB_DT_STRING << 8) | 0x00): /* string 0 descriptors */
+ len = min_t(unsigned int,
+ leni, min_t(unsigned int,
+ sizeof(root_hub_str_index0),
+ wLength));
+ data_buf = root_hub_str_index0;
+ break;
+
+ case ((USB_DT_STRING << 8) | 0x01): /* string 1 descriptors */
+ len = min_t(unsigned int,
+ leni, min_t(unsigned int,
+ sizeof(root_hub_str_index1),
+ wLength));
+ data_buf = root_hub_str_index1;
+ break;
+
+ default:
+ ERR("invalid wValue");
+ stat = USB_ST_STALLED;
+ }
+
+ break;
+
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ DBG("RH_GET_DESCRIPTOR | RH_CLASS");
+
+ tmp = isp116x_read_reg32(isp116x, HCRHDESCA);
+
+ data_buf[0] = 0x09; /* min length; */
+ data_buf[1] = 0x29;
+ data_buf[2] = tmp & RH_A_NDP;
+ data_buf[3] = 0;
+ if (tmp & RH_A_PSM) /* per-port power switching? */
+ data_buf[3] |= 0x01;
+ if (tmp & RH_A_NOCP) /* no overcurrent reporting? */
+ data_buf[3] |= 0x10;
+ else if (tmp & RH_A_OCPM) /* per-port overcurrent rep? */
+ data_buf[3] |= 0x08;
+
+ /* Corresponds to data_buf[4-7] */
+ datab[1] = 0;
+ data_buf[5] = (tmp & RH_A_POTPGT) >> 24;
+
+ tmp = isp116x_read_reg32(isp116x, HCRHDESCB);
+
+ data_buf[7] = tmp & RH_B_DR;
+ if (data_buf[2] < 7)
+ data_buf[8] = 0xff;
+ else {
+ data_buf[0] += 2;
+ data_buf[8] = (tmp & RH_B_DR) >> 8;
+ data_buf[10] = data_buf[9] = 0xff;
+ }
+
+ len = min_t(unsigned int, leni,
+ min_t(unsigned int, data_buf[0], wLength));
+ break;
+
+ case RH_GET_CONFIGURATION:
+ DBG("RH_GET_CONFIGURATION");
+
+ *(__u8 *) data_buf = 0x01;
+ len = 1;
+ break;
+
+ case RH_SET_CONFIGURATION:
+ DBG("RH_SET_CONFIGURATION");
+
+ isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPSC);
+ len = 0;
+ break;
+
+ default:
+ ERR("*** *** *** unsupported root hub command *** *** ***");
+ stat = USB_ST_STALLED;
+ }
+
+ len = min_t(int, len, leni);
+ if (buffer != data_buf)
+ memcpy(buffer, data_buf, len);
+
+ dev->act_len = len;
+ dev->status = stat;
+ DBG("dev act_len %d, status %d", dev->act_len, dev->status);
+
+ dump_msg(dev, pipe, buffer, transfer_len, "RH(ret)");
+
+ return stat;
+}
+
+/* --- Transfer functions -------------------------------------------------- */
+
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int len, int interval)
+{
+ DBG("dev=%p pipe=%#lx buf=%p size=%d int=%d",
+ dev, pipe, buffer, len, interval);
+
+ return -1;
+}
+
+int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int len, struct devrequest *setup)
+{
+ int devnum = usb_pipedevice(pipe);
+ int epnum = usb_pipeendpoint(pipe);
+ int max = max_transfer_len(dev, pipe);
+ int dir_in = usb_pipein(pipe);
+ int done, ret;
+
+ /* Control message is for the HUB? */
+ if (devnum == rh_devnum)
+ return isp116x_submit_rh_msg(dev, pipe, buffer, len, setup);
+
+ /* Ok, no HUB message so send the message to the device */
+
+ /* Setup phase */
+ DBG("--- SETUP PHASE --------------------------------");
+ usb_settoggle(dev, epnum, 1, 0);
+ ret = isp116x_submit_job(dev, pipe,
+ PTD_DIR_SETUP,
+ setup, sizeof(struct devrequest));
+ if (ret < 0) {
+ DBG("control setup phase error (ret = %d", ret);
+ return -1;
+ }
+
+ /* Data phase */
+ DBG("--- DATA PHASE ---------------------------------");
+ done = 0;
+ usb_settoggle(dev, epnum, !dir_in, 1);
+ while (done < len) {
+ ret = isp116x_submit_job(dev, pipe,
+ dir_in ? PTD_DIR_IN : PTD_DIR_OUT,
+ (__u8 *) buffer + done,
+ max > len - done ? len - done : max);
+ if (ret < 0) {
+ DBG("control data phase error (ret = %d)", ret);
+ return -1;
+ }
+ done += ret;
+
+ if (dir_in && ret < max) /* short packet */
+ break;
+ }
+
+ /* Status phase */
+ DBG("--- STATUS PHASE -------------------------------");
+ usb_settoggle(dev, epnum, !dir_in, 1);
+ ret = isp116x_submit_job(dev, pipe,
+ !dir_in ? PTD_DIR_IN : PTD_DIR_OUT, NULL, 0);
+ if (ret < 0) {
+ DBG("control status phase error (ret = %d", ret);
+ return -1;
+ }
+
+ dev->act_len = done;
+
+ dump_msg(dev, pipe, buffer, len, "DEV(ret)");
+
+ return done;
+}
+
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int len)
+{
+ int dir_out = usb_pipeout(pipe);
+ int max = max_transfer_len(dev, pipe);
+ int done, ret;
+
+ DBG("--- BULK ---------------------------------------");
+ DBG("dev=%ld pipe=%ld buf=%p size=%d dir_out=%d",
+ usb_pipedevice(pipe), usb_pipeendpoint(pipe), buffer, len, dir_out);
+
+ done = 0;
+ while (done < len) {
+ ret = isp116x_submit_job(dev, pipe,
+ !dir_out ? PTD_DIR_IN : PTD_DIR_OUT,
+ (__u8 *) buffer + done,
+ max > len - done ? len - done : max);
+ if (ret < 0) {
+ DBG("error on bulk message (ret = %d)", ret);
+ return -1;
+ }
+
+ done += ret;
+
+ if (!dir_out && ret < max) /* short packet */
+ break;
+ }
+
+ dev->act_len = done;
+
+ return 0;
+}
+
+/* --- Basic functions ----------------------------------------------------- */
+
+static int isp116x_sw_reset(struct isp116x *isp116x)
+{
+ int retries = 15;
+ int ret = 0;
+
+ DBG("");
+
+ isp116x->disabled = 1;
+
+ isp116x_write_reg16(isp116x, HCSWRES, HCSWRES_MAGIC);
+ isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR);
+ while (--retries) {
+ /* It usually resets within 1 ms */
+ wait_ms(1);
+ if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR))
+ break;
+ }
+ if (!retries) {
+ ERR("software reset timeout");
+ ret = -1;
+ }
+ return ret;
+}
+
+static int isp116x_reset(struct isp116x *isp116x)
+{
+ unsigned long t;
+ u16 clkrdy = 0;
+ int ret, timeout = 15 /* ms */ ;
+
+ DBG("");
+
+ ret = isp116x_sw_reset(isp116x);
+ if (ret)
+ return ret;
+
+ for (t = 0; t < timeout; t++) {
+ clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY;
+ if (clkrdy)
+ break;
+ wait_ms(1);
+ }
+ if (!clkrdy) {
+ ERR("clock not ready after %dms", timeout);
+ /* After sw_reset the clock won't report to be ready, if
+ H_WAKEUP pin is high. */
+ ERR("please make sure that the H_WAKEUP pin is pulled low!");
+ ret = -1;
+ }
+ return ret;
+}
+
+static void isp116x_stop(struct isp116x *isp116x)
+{
+ u32 val;
+
+ DBG("");
+
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+ /* Switch off ports' power, some devices don't come up
+ after next 'start' without this */
+ val = isp116x_read_reg32(isp116x, HCRHDESCA);
+ val &= ~(RH_A_NPS | RH_A_PSM);
+ isp116x_write_reg32(isp116x, HCRHDESCA, val);
+ isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS);
+
+ isp116x_sw_reset(isp116x);
+}
+
+/*
+ * Configure the chip. The chip must be successfully reset by now.
+ */
+static int isp116x_start(struct isp116x *isp116x)
+{
+ struct isp116x_platform_data *board = isp116x->board;
+ u32 val;
+
+ DBG("");
+
+ /* Clear interrupt status and disable all interrupt sources */
+ isp116x_write_reg16(isp116x, HCuPINT, 0xff);
+ isp116x_write_reg16(isp116x, HCuPINTENB, 0);
+
+ isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE);
+ isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE);
+
+ /* Hardware configuration */
+ val = HCHWCFG_DBWIDTH(1);
+ if (board->sel15Kres)
+ val |= HCHWCFG_15KRSEL;
+ /* Remote wakeup won't work without working clock */
+ if (board->remote_wakeup_enable)
+ val |= HCHWCFG_CLKNOTSTOP;
+ if (board->oc_enable)
+ val |= HCHWCFG_ANALOG_OC;
+ isp116x_write_reg16(isp116x, HCHWCFG, val);
+
+ /* --- Root hub configuration */
+ val = (25 << 24) & RH_A_POTPGT;
+ /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to
+ be always set. Yet, instead, we request individual port
+ power switching. */
+ val |= RH_A_PSM;
+ /* Report overcurrent per port */
+ val |= RH_A_OCPM;
+ isp116x_write_reg32(isp116x, HCRHDESCA, val);
+ isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA);
+
+ val = RH_B_PPCM;
+ isp116x_write_reg32(isp116x, HCRHDESCB, val);
+ isp116x->rhdescb = isp116x_read_reg32(isp116x, HCRHDESCB);
+
+ val = 0;
+ if (board->remote_wakeup_enable)
+ val |= RH_HS_DRWE;
+ isp116x_write_reg32(isp116x, HCRHSTATUS, val);
+ isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS);
+
+ isp116x_write_reg32(isp116x, HCFMINTVL, 0x27782edf);
+
+ /* Go operational */
+ val = HCCONTROL_USB_OPER;
+ if (board->remote_wakeup_enable)
+ val |= HCCONTROL_RWE;
+ isp116x_write_reg32(isp116x, HCCONTROL, val);
+
+ /* Disable ports to avoid race in device enumeration */
+ isp116x_write_reg32(isp116x, HCRHPORT1, RH_PS_CCS);
+ isp116x_write_reg32(isp116x, HCRHPORT2, RH_PS_CCS);
+
+ isp116x_show_regs(isp116x);
+
+ isp116x->disabled = 0;
+
+ return 0;
+}
+
+/* --- Init functions ------------------------------------------------------ */
+
+int isp116x_check_id(struct isp116x *isp116x)
+{
+ int val;
+
+ val = isp116x_read_reg16(isp116x, HCCHIPID);
+ if ((val & HCCHIPID_MASK) != HCCHIPID_MAGIC) {
+ ERR("invalid chip ID %04x", val);
+ return -1;
+ }
+
+ return 0;
+}
+
+int usb_lowlevel_init(void)
+{
+ struct isp116x *isp116x = &isp116x_dev;
+
+ DBG("");
+
+ got_rhsc = rh_devnum = 0;
+
+ /* Init device registers addr */
+ isp116x->addr_reg = (u16 *) ISP116X_HCD_ADDR;
+ isp116x->data_reg = (u16 *) ISP116X_HCD_DATA;
+
+ /* Setup specific board settings */
+#ifdef ISP116X_HCD_SEL15kRES
+ isp116x_board.sel15Kres = 1;
+#endif
+#ifdef ISP116X_HCD_OC_ENABLE
+ isp116x_board.oc_enable = 1;
+#endif
+#ifdef ISP116X_HCD_REMOTE_WAKEUP_ENABLE
+ isp116x_board.remote_wakeup_enable = 1;
+#endif
+ isp116x->board = &isp116x_board;
+
+ /* Try to get ISP116x silicon chip ID */
+ if (isp116x_check_id(isp116x) < 0)
+ return -1;
+
+ isp116x->disabled = 1;
+ isp116x->sleeping = 0;
+
+ isp116x_reset(isp116x);
+ isp116x_start(isp116x);
+
+ return 0;
+}
+
+int usb_lowlevel_stop(void)
+{
+ struct isp116x *isp116x = &isp116x_dev;
+
+ DBG("");
+
+ if (!isp116x->disabled)
+ isp116x_stop(isp116x);
+
+ return 0;
+}
generated by cgit v1.1 at 2024-11-24 10:30:22 +0000