-/*
- * Faraday FOTG210 EHCI-like driver
+/* Faraday FOTG210 EHCI-like driver
*
* Copyright (c) 2013 Faraday Technology Corporation
*
#include <asm/irq.h>
#include <asm/unaligned.h>
-/*-------------------------------------------------------------------------*/
#define DRIVER_AUTHOR "Yuan-Hsin Chen"
#define DRIVER_DESC "FOTG210 Host Controller (EHCI) Driver"
-
-static const char hcd_name[] = "fotg210_hcd";
+static const char hcd_name[] = "fotg210_hcd";
#undef FOTG210_URB_TRACE
-
#define FOTG210_STATS
/* magic numbers that can affect system performance */
-#define FOTG210_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
-#define FOTG210_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
-#define FOTG210_TUNE_RL_TT 0
-#define FOTG210_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
-#define FOTG210_TUNE_MULT_TT 1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
+#define FOTG210_TUNE_CERR 3 /* 0-3 qtd retries; 0 == don't stop */
+#define FOTG210_TUNE_RL_HS 4 /* nak throttle; see 4.9 */
+#define FOTG210_TUNE_RL_TT 0
+#define FOTG210_TUNE_MULT_HS 1 /* 1-3 transactions/uframe; 4.10.3 */
+#define FOTG210_TUNE_MULT_TT 1
+
+/* Some drivers think it's safe to schedule isochronous transfers more than 256
+ * ms into the future (partly as a result of an old bug in the scheduling
* code). In an attempt to avoid trouble, we will use a minimum scheduling
* length of 512 frames instead of 256.
*/
-#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */
+#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */
/* Initial IRQ latency: faster than hw default */
-static int log2_irq_thresh; /* 0 to 6 */
+static int log2_irq_thresh; /* 0 to 6 */
module_param(log2_irq_thresh, int, S_IRUGO);
MODULE_PARM_DESC(log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
module_param(hird, int, S_IRUGO);
MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
+#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
#include "fotg210.h"
-/*-------------------------------------------------------------------------*/
-
#define fotg210_dbg(fotg210, fmt, args...) \
- dev_dbg(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_dbg(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_err(fotg210, fmt, args...) \
- dev_err(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_err(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_info(fotg210, fmt, args...) \
- dev_info(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_info(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
#define fotg210_warn(fotg210, fmt, args...) \
- dev_warn(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+ dev_warn(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
+/* check the values in the HCSPARAMS register (host controller _Structural_
+ * parameters) see EHCI spec, Table 2-4 for each value
*/
static void dbg_hcs_params(struct fotg210_hcd *fotg210, char *label)
{
- u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
+ u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
- fotg210_dbg(fotg210,
- "%s hcs_params 0x%x ports=%d\n",
- label, params,
- HCS_N_PORTS(params)
- );
+ fotg210_dbg(fotg210, "%s hcs_params 0x%x ports=%d\n", label, params,
+ HCS_N_PORTS(params));
}
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
+/* check the values in the HCCPARAMS register (host controller _Capability_
+ * parameters) see EHCI Spec, Table 2-5 for each value
+ */
static void dbg_hcc_params(struct fotg210_hcd *fotg210, char *label)
{
- u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
+ u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
- fotg210_dbg(fotg210,
- "%s hcc_params %04x uframes %s%s\n",
- label,
- params,
- HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
- HCC_CANPARK(params) ? " park" : "");
+ fotg210_dbg(fotg210, "%s hcc_params %04x uframes %s%s\n", label,
+ params,
+ HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
+ HCC_CANPARK(params) ? " park" : "");
}
static void __maybe_unused
dbg_qtd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd)
{
fotg210_dbg(fotg210, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
- hc32_to_cpup(fotg210, &qtd->hw_next),
- hc32_to_cpup(fotg210, &qtd->hw_alt_next),
- hc32_to_cpup(fotg210, &qtd->hw_token),
- hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
+ hc32_to_cpup(fotg210, &qtd->hw_next),
+ hc32_to_cpup(fotg210, &qtd->hw_alt_next),
+ hc32_to_cpup(fotg210, &qtd->hw_token),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
if (qtd->hw_buf[1])
fotg210_dbg(fotg210, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
- hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
- hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
+ hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
+ hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
}
static void __maybe_unused
{
struct fotg210_qh_hw *hw = qh->hw;
- fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label,
- qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
+ fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label, qh,
+ hw->hw_next, hw->hw_info1, hw->hw_info2,
+ hw->hw_current);
+
dbg_qtd("overlay", fotg210, (struct fotg210_qtd *) &hw->hw_qtd_next);
}
static void __maybe_unused
dbg_itd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
{
- fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n",
- label, itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
- itd->urb);
+ fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n", label,
+ itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
+ itd->urb);
+
fotg210_dbg(fotg210,
- " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fotg210, itd->hw_transaction[0]),
- hc32_to_cpu(fotg210, itd->hw_transaction[1]),
- hc32_to_cpu(fotg210, itd->hw_transaction[2]),
- hc32_to_cpu(fotg210, itd->hw_transaction[3]),
- hc32_to_cpu(fotg210, itd->hw_transaction[4]),
- hc32_to_cpu(fotg210, itd->hw_transaction[5]),
- hc32_to_cpu(fotg210, itd->hw_transaction[6]),
- hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+ " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ hc32_to_cpu(fotg210, itd->hw_transaction[0]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[1]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[2]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[3]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[4]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[5]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[6]),
+ hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+
fotg210_dbg(fotg210,
- " buf: %08x %08x %08x %08x %08x %08x %08x\n",
- hc32_to_cpu(fotg210, itd->hw_bufp[0]),
- hc32_to_cpu(fotg210, itd->hw_bufp[1]),
- hc32_to_cpu(fotg210, itd->hw_bufp[2]),
- hc32_to_cpu(fotg210, itd->hw_bufp[3]),
- hc32_to_cpu(fotg210, itd->hw_bufp[4]),
- hc32_to_cpu(fotg210, itd->hw_bufp[5]),
- hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+ " buf: %08x %08x %08x %08x %08x %08x %08x\n",
+ hc32_to_cpu(fotg210, itd->hw_bufp[0]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[1]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[2]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[3]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[4]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[5]),
+ hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+
fotg210_dbg(fotg210, " index: %d %d %d %d %d %d %d %d\n",
- itd->index[0], itd->index[1], itd->index[2],
- itd->index[3], itd->index[4], itd->index[5],
- itd->index[6], itd->index[7]);
+ itd->index[0], itd->index[1], itd->index[2],
+ itd->index[3], itd->index[4], itd->index[5],
+ itd->index[6], itd->index[7]);
}
static int __maybe_unused
dbg_status_buf(char *buf, unsigned len, const char *label, u32 status)
{
- return scnprintf(buf, len,
- "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
- label, label[0] ? " " : "", status,
- (status & STS_ASS) ? " Async" : "",
- (status & STS_PSS) ? " Periodic" : "",
- (status & STS_RECL) ? " Recl" : "",
- (status & STS_HALT) ? " Halt" : "",
- (status & STS_IAA) ? " IAA" : "",
- (status & STS_FATAL) ? " FATAL" : "",
- (status & STS_FLR) ? " FLR" : "",
- (status & STS_PCD) ? " PCD" : "",
- (status & STS_ERR) ? " ERR" : "",
- (status & STS_INT) ? " INT" : ""
- );
+ return scnprintf(buf, len, "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
+ label, label[0] ? " " : "", status,
+ (status & STS_ASS) ? " Async" : "",
+ (status & STS_PSS) ? " Periodic" : "",
+ (status & STS_RECL) ? " Recl" : "",
+ (status & STS_HALT) ? " Halt" : "",
+ (status & STS_IAA) ? " IAA" : "",
+ (status & STS_FATAL) ? " FATAL" : "",
+ (status & STS_FLR) ? " FLR" : "",
+ (status & STS_PCD) ? " PCD" : "",
+ (status & STS_ERR) ? " ERR" : "",
+ (status & STS_INT) ? " INT" : "");
}
static int __maybe_unused
dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable)
{
- return scnprintf(buf, len,
- "%s%sintrenable %02x%s%s%s%s%s%s",
- label, label[0] ? " " : "", enable,
- (enable & STS_IAA) ? " IAA" : "",
- (enable & STS_FATAL) ? " FATAL" : "",
- (enable & STS_FLR) ? " FLR" : "",
- (enable & STS_PCD) ? " PCD" : "",
- (enable & STS_ERR) ? " ERR" : "",
- (enable & STS_INT) ? " INT" : ""
- );
+ return scnprintf(buf, len, "%s%sintrenable %02x%s%s%s%s%s%s",
+ label, label[0] ? " " : "", enable,
+ (enable & STS_IAA) ? " IAA" : "",
+ (enable & STS_FATAL) ? " FATAL" : "",
+ (enable & STS_FLR) ? " FLR" : "",
+ (enable & STS_PCD) ? " PCD" : "",
+ (enable & STS_ERR) ? " ERR" : "",
+ (enable & STS_INT) ? " INT" : "");
}
static const char *const fls_strings[] = { "1024", "512", "256", "??" };
-static int
-dbg_command_buf(char *buf, unsigned len, const char *label, u32 command)
+static int dbg_command_buf(char *buf, unsigned len, const char *label,
+ u32 command)
{
return scnprintf(buf, len,
- "%s%scommand %07x %s=%d ithresh=%d%s%s%s "
- "period=%s%s %s",
- label, label[0] ? " " : "", command,
- (command & CMD_PARK) ? " park" : "(park)",
- CMD_PARK_CNT(command),
- (command >> 16) & 0x3f,
- (command & CMD_IAAD) ? " IAAD" : "",
- (command & CMD_ASE) ? " Async" : "",
- (command & CMD_PSE) ? " Periodic" : "",
- fls_strings[(command >> 2) & 0x3],
- (command & CMD_RESET) ? " Reset" : "",
- (command & CMD_RUN) ? "RUN" : "HALT"
- );
-}
-
-static char
-*dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status)
-{
- char *sig;
+ "%s%scommand %07x %s=%d ithresh=%d%s%s%s period=%s%s %s",
+ label, label[0] ? " " : "", command,
+ (command & CMD_PARK) ? " park" : "(park)",
+ CMD_PARK_CNT(command),
+ (command >> 16) & 0x3f,
+ (command & CMD_IAAD) ? " IAAD" : "",
+ (command & CMD_ASE) ? " Async" : "",
+ (command & CMD_PSE) ? " Periodic" : "",
+ fls_strings[(command >> 2) & 0x3],
+ (command & CMD_RESET) ? " Reset" : "",
+ (command & CMD_RUN) ? "RUN" : "HALT");
+}
+
+static char *dbg_port_buf(char *buf, unsigned len, const char *label, int port,
+ u32 status)
+{
+ char *sig;
/* signaling state */
switch (status & (3 << 10)) {
break;
}
- scnprintf(buf, len,
- "%s%sport:%d status %06x %d "
- "sig=%s%s%s%s%s%s%s%s",
- label, label[0] ? " " : "", port, status,
- status>>25,/*device address */
- sig,
- (status & PORT_RESET) ? " RESET" : "",
- (status & PORT_SUSPEND) ? " SUSPEND" : "",
- (status & PORT_RESUME) ? " RESUME" : "",
- (status & PORT_PEC) ? " PEC" : "",
- (status & PORT_PE) ? " PE" : "",
- (status & PORT_CSC) ? " CSC" : "",
- (status & PORT_CONNECT) ? " CONNECT" : "");
+ scnprintf(buf, len, "%s%sport:%d status %06x %d sig=%s%s%s%s%s%s%s%s",
+ label, label[0] ? " " : "", port, status,
+ status >> 25, /*device address */
+ sig,
+ (status & PORT_RESET) ? " RESET" : "",
+ (status & PORT_SUSPEND) ? " SUSPEND" : "",
+ (status & PORT_RESUME) ? " RESUME" : "",
+ (status & PORT_PEC) ? " PEC" : "",
+ (status & PORT_PE) ? " PE" : "",
+ (status & PORT_CSC) ? " CSC" : "",
+ (status & PORT_CONNECT) ? " CONNECT" : "");
+
return buf;
}
/* functions have the "wrong" filename when they're output... */
-#define dbg_status(fotg210, label, status) { \
- char _buf[80]; \
- dbg_status_buf(_buf, sizeof(_buf), label, status); \
- fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_status(fotg210, label, status) { \
+ char _buf[80]; \
+ dbg_status_buf(_buf, sizeof(_buf), label, status); \
+ fotg210_dbg(fotg210, "%s\n", _buf); \
}
-#define dbg_cmd(fotg210, label, command) { \
- char _buf[80]; \
- dbg_command_buf(_buf, sizeof(_buf), label, command); \
- fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_cmd(fotg210, label, command) { \
+ char _buf[80]; \
+ dbg_command_buf(_buf, sizeof(_buf), label, command); \
+ fotg210_dbg(fotg210, "%s\n", _buf); \
}
-#define dbg_port(fotg210, label, port, status) { \
- char _buf[80]; \
- fotg210_dbg(fotg210, "%s\n", dbg_port_buf(_buf, sizeof(_buf), label, port, status) ); \
+#define dbg_port(fotg210, label, port, status) { \
+ char _buf[80]; \
+ fotg210_dbg(fotg210, "%s\n", \
+ dbg_port_buf(_buf, sizeof(_buf), label, port, status));\
}
-/*-------------------------------------------------------------------------*/
-
/* troubleshooting help: expose state in debugfs */
-
static int debug_async_open(struct inode *, struct file *);
static int debug_periodic_open(struct inode *, struct file *);
static int debug_registers_open(struct inode *, struct file *);
return '/';
}
-static void qh_lines(
- struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh,
- char **nextp,
- unsigned *sizep
-)
-{
- u32 scratch;
- u32 hw_curr;
- struct fotg210_qtd *td;
- unsigned temp;
- unsigned size = *sizep;
- char *next = *nextp;
- char mark;
- __le32 list_end = FOTG210_LIST_END(fotg210);
- struct fotg210_qh_hw *hw = qh->hw;
-
- if (hw->hw_qtd_next == list_end) /* NEC does this */
+static void qh_lines(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
+ char **nextp, unsigned *sizep)
+{
+ u32 scratch;
+ u32 hw_curr;
+ struct fotg210_qtd *td;
+ unsigned temp;
+ unsigned size = *sizep;
+ char *next = *nextp;
+ char mark;
+ __le32 list_end = FOTG210_LIST_END(fotg210);
+ struct fotg210_qh_hw *hw = qh->hw;
+
+ if (hw->hw_qtd_next == list_end) /* NEC does this */
mark = '@';
else
mark = token_mark(fotg210, hw->hw_token);
- if (mark == '/') { /* qh_alt_next controls qh advance? */
- if ((hw->hw_alt_next & QTD_MASK(fotg210))
- == fotg210->async->hw->hw_alt_next)
- mark = '#'; /* blocked */
+ if (mark == '/') { /* qh_alt_next controls qh advance? */
+ if ((hw->hw_alt_next & QTD_MASK(fotg210)) ==
+ fotg210->async->hw->hw_alt_next)
+ mark = '#'; /* blocked */
else if (hw->hw_alt_next == list_end)
- mark = '.'; /* use hw_qtd_next */
+ mark = '.'; /* use hw_qtd_next */
/* else alt_next points to some other qtd */
}
scratch = hc32_to_cpup(fotg210, &hw->hw_info1);
temp = snprintf(next, size, "\n");
if (size < temp)
temp = size;
+
size -= temp;
next += temp;
static ssize_t fill_async_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- unsigned temp, size;
- char *next;
- struct fotg210_qh *qh;
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ unsigned temp, size;
+ char *next;
+ struct fotg210_qh *qh;
hcd = bus_to_hcd(buf->bus);
fotg210 = hcd_to_fotg210(hcd);
*/
spin_lock_irqsave(&fotg210->lock, flags);
for (qh = fotg210->async->qh_next.qh; size > 0 && qh;
- qh = qh->qh_next.qh)
+ qh = qh->qh_next.qh)
qh_lines(fotg210, qh, &next, &size);
if (fotg210->async_unlink && size > 0) {
temp = scnprintf(next, size, "\nunlink =\n");
#define DBG_SCHED_LIMIT 64
static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- union fotg210_shadow p, *seen;
- unsigned temp, size, seen_count;
- char *next;
- unsigned i;
- __hc32 tag;
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ union fotg210_shadow p, *seen;
+ unsigned temp, size, seen_count;
+ char *next;
+ unsigned i;
+ __hc32 tag;
seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC);
if (!seen)
return 0;
+
seen_count = 0;
hcd = bus_to_hcd(buf->bus);
p = fotg210->pshadow[i];
if (likely(!p.ptr))
continue;
+
tag = Q_NEXT_TYPE(fotg210, fotg210->periodic[i]);
temp = scnprintf(next, size, "%4d: ", i);
continue;
if (p.qh->qh_next.ptr) {
temp = scnprintf(next, size,
- " ...");
+ " ...");
size -= temp;
next += temp;
}
}
/* show more info the first time around */
if (temp == seen_count) {
- u32 scratch = hc32_to_cpup(fotg210,
+ u32 scratch = hc32_to_cpup(fotg210,
&hw->hw_info1);
- struct fotg210_qtd *qtd;
- char *type = "";
+ struct fotg210_qtd *qtd;
+ char *type = "";
/* count tds, get ep direction */
temp = 0;
}
temp = scnprintf(next, size,
- "(%c%d ep%d%s "
- "[%d/%d] q%d p%d)",
+ "(%c%d ep%d%s [%d/%d] q%d p%d)",
speed_char(scratch),
scratch & 0x007f,
(scratch >> 8) & 0x000f, type,
break;
case Q_TYPE_FSTN:
temp = scnprintf(next, size,
- " fstn-%8x/%p", p.fstn->hw_prev,
- p.fstn);
+ " fstn-%8x/%p",
+ p.fstn->hw_prev, p.fstn);
tag = Q_NEXT_TYPE(fotg210, p.fstn->hw_next);
p = p.fstn->fstn_next;
break;
case Q_TYPE_ITD:
temp = scnprintf(next, size,
- " itd/%p", p.itd);
+ " itd/%p", p.itd);
tag = Q_NEXT_TYPE(fotg210, p.itd->hw_next);
p = p.itd->itd_next;
break;
static ssize_t fill_registers_buffer(struct debug_buffer *buf)
{
- struct usb_hcd *hcd;
- struct fotg210_hcd *fotg210;
- unsigned long flags;
- unsigned temp, size, i;
- char *next, scratch[80];
- static const char fmt[] = "%*s\n";
- static const char label[] = "";
+ struct usb_hcd *hcd;
+ struct fotg210_hcd *fotg210;
+ unsigned long flags;
+ unsigned temp, size, i;
+ char *next, scratch[80];
+ static const char fmt[] = "%*s\n";
+ static const char label[] = "";
hcd = bus_to_hcd(buf->bus);
fotg210 = hcd_to_fotg210(hcd);
if (!HCD_HW_ACCESSIBLE(hcd)) {
size = scnprintf(next, size,
- "bus %s, device %s\n"
- "%s\n"
- "SUSPENDED(no register access)\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc);
+ "bus %s, device %s\n"
+ "%s\n"
+ "SUSPENDED(no register access)\n",
+ hcd->self.controller->bus->name,
+ dev_name(hcd->self.controller),
+ hcd->product_desc);
goto done;
}
/* Capability Registers */
i = HC_VERSION(fotg210, fotg210_readl(fotg210,
- &fotg210->caps->hc_capbase));
+ &fotg210->caps->hc_capbase));
temp = scnprintf(next, size,
- "bus %s, device %s\n"
- "%s\n"
- "EHCI %x.%02x, rh state %s\n",
- hcd->self.controller->bus->name,
- dev_name(hcd->self.controller),
- hcd->product_desc,
- i >> 8, i & 0x0ff, rh_state_string(fotg210));
+ "bus %s, device %s\n"
+ "%s\n"
+ "EHCI %x.%02x, rh state %s\n",
+ hcd->self.controller->bus->name,
+ dev_name(hcd->self.controller),
+ hcd->product_desc,
+ i >> 8, i & 0x0ff, rh_state_string(fotg210));
size -= temp;
next += temp;
#ifdef FOTG210_STATS
temp = scnprintf(next, size,
- "irq normal %ld err %ld iaa %ld(lost %ld)\n",
- fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
- fotg210->stats.lost_iaa);
+ "irq normal %ld err %ld iaa %ld(lost %ld)\n",
+ fotg210->stats.normal, fotg210->stats.error,
+ fotg210->stats.iaa, fotg210->stats.lost_iaa);
size -= temp;
next += temp;
temp = scnprintf(next, size, "complete %ld unlink %ld\n",
- fotg210->stats.complete, fotg210->stats.unlink);
+ fotg210->stats.complete, fotg210->stats.unlink);
size -= temp;
next += temp;
#endif
return buf->alloc_size - size;
}
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
- ssize_t (*fill_func)(struct debug_buffer *))
+static struct debug_buffer
+*alloc_buffer(struct usb_bus *bus, ssize_t (*fill_func)(struct debug_buffer *))
{
struct debug_buffer *buf;
}
static ssize_t debug_output(struct file *file, char __user *user_buf,
- size_t len, loff_t *offset)
+ size_t len, loff_t *offset)
{
struct debug_buffer *buf = file->private_data;
int ret = 0;
mutex_unlock(&buf->mutex);
ret = simple_read_from_buffer(user_buf, len, offset,
- buf->output_buf, buf->count);
+ buf->output_buf, buf->count);
out:
return ret;
static int debug_periodic_open(struct inode *inode, struct file *file)
{
struct debug_buffer *buf;
+
buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
if (!buf)
return -ENOMEM;
static int debug_registers_open(struct inode *inode, struct file *file)
{
file->private_data = alloc_buffer(inode->i_private,
- fill_registers_buffer);
+ fill_registers_buffer);
return file->private_data ? 0 : -ENOMEM;
}
struct usb_bus *bus = &fotg210_to_hcd(fotg210)->self;
fotg210->debug_dir = debugfs_create_dir(bus->bus_name,
- fotg210_debug_root);
+ fotg210_debug_root);
if (!fotg210->debug_dir)
return;
if (!debugfs_create_file("async", S_IRUGO, fotg210->debug_dir, bus,
- &debug_async_fops))
+ &debug_async_fops))
goto file_error;
if (!debugfs_create_file("periodic", S_IRUGO, fotg210->debug_dir, bus,
- &debug_periodic_fops))
+ &debug_periodic_fops))
goto file_error;
if (!debugfs_create_file("registers", S_IRUGO, fotg210->debug_dir, bus,
- &debug_registers_fops))
+ &debug_registers_fops))
goto file_error;
return;
debugfs_remove_recursive(fotg210->debug_dir);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
+/* handshake - spin reading hc until handshake completes or fails
* @ptr: address of hc register to be read
* @mask: bits to look at in result of read
* @done: value of those bits when handshake succeeds
* bridge shutdown: shutting down the bridge before the devices using it.
*/
static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
- u32 mask, u32 done, int usec)
+ u32 mask, u32 done, int usec)
{
- u32 result;
+ u32 result;
do {
result = fotg210_readl(fotg210, ptr);
return -ETIMEDOUT;
}
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
+/* Force HC to halt state from unknown (EHCI spec section 2.3).
* Must be called with interrupts enabled and the lock not held.
*/
static int fotg210_halt(struct fotg210_hcd *fotg210)
{
- u32 temp;
+ u32 temp;
spin_lock_irq(&fotg210->lock);
synchronize_irq(fotg210_to_hcd(fotg210)->irq);
return handshake(fotg210, &fotg210->regs->status,
- STS_HALT, STS_HALT, 16 * 125);
+ STS_HALT, STS_HALT, 16 * 125);
}
-/*
- * Reset a non-running (STS_HALT == 1) controller.
+/* Reset a non-running (STS_HALT == 1) controller.
* Must be called with interrupts enabled and the lock not held.
*/
static int fotg210_reset(struct fotg210_hcd *fotg210)
{
- int retval;
- u32 command = fotg210_readl(fotg210, &fotg210->regs->command);
+ int retval;
+ u32 command = fotg210_readl(fotg210, &fotg210->regs->command);
/* If the EHCI debug controller is active, special care must be
- * taken before and after a host controller reset */
+ * taken before and after a host controller reset
+ */
if (fotg210->debug && !dbgp_reset_prep(fotg210_to_hcd(fotg210)))
fotg210->debug = NULL;
fotg210->rh_state = FOTG210_RH_HALTED;
fotg210->next_statechange = jiffies;
retval = handshake(fotg210, &fotg210->regs->command,
- CMD_RESET, 0, 250 * 1000);
+ CMD_RESET, 0, 250 * 1000);
if (retval)
return retval;
return retval;
}
-/*
- * Idle the controller (turn off the schedules).
+/* Idle the controller (turn off the schedules).
* Must be called with interrupts enabled and the lock not held.
*/
static void fotg210_quiesce(struct fotg210_hcd *fotg210)
{
- u32 temp;
+ u32 temp;
if (fotg210->rh_state != FOTG210_RH_RUNNING)
return;
/* wait for any schedule enables/disables to take effect */
temp = (fotg210->command << 10) & (STS_ASS | STS_PSS);
handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, temp,
- 16 * 125);
+ 16 * 125);
/* then disable anything that's still active */
spin_lock_irq(&fotg210->lock);
/* hardware can take 16 microframes to turn off ... */
handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, 0,
- 16 * 125);
+ 16 * 125);
}
-/*-------------------------------------------------------------------------*/
-
static void end_unlink_async(struct fotg210_hcd *fotg210);
static void unlink_empty_async(struct fotg210_hcd *fotg210);
static void fotg210_work(struct fotg210_hcd *fotg210);
struct fotg210_qh *qh);
static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
-/*-------------------------------------------------------------------------*/
-
/* Set a bit in the USBCMD register */
static void fotg210_set_command_bit(struct fotg210_hcd *fotg210, u32 bit)
{
fotg210_readl(fotg210, &fotg210->regs->command);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support... Now using hrtimers.
+/* EHCI timer support... Now using hrtimers.
*
* Lots of different events are triggered from fotg210->hrtimer. Whenever
* the timer routine runs, it checks each possible event; events that are
* allow for an expiration range of 1 ms.
*/
-/*
- * Delay lengths for the hrtimer event types.
+/* Delay lengths for the hrtimer event types.
* Keep this list sorted by delay length, in the same order as
* the event types indexed by enum fotg210_hrtimer_event in fotg210.h.
*/
static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event,
bool resched)
{
- ktime_t *timeout = &fotg210->hr_timeouts[event];
+ ktime_t *timeout = &fotg210->hr_timeouts[event];
if (resched)
*timeout = ktime_add(ktime_get(),
/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
{
- unsigned actual, want;
+ unsigned actual, want;
/* Don't enable anything if the controller isn't running (e.g., died) */
if (fotg210->rh_state != FOTG210_RH_RUNNING)
/* Poll again later, but give up after about 20 ms */
if (fotg210->ASS_poll_count++ < 20) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_ASS,
- true);
+ true);
return;
}
fotg210_dbg(fotg210, "Waited too long for the async schedule status (%x/%x), giving up\n",
/* Turn off the schedule after a while */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_DISABLE_ASYNC,
- true);
+ FOTG210_HRTIMER_DISABLE_ASYNC,
+ true);
}
}
}
/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
{
- unsigned actual, want;
+ unsigned actual, want;
/* Don't do anything if the controller isn't running (e.g., died) */
if (fotg210->rh_state != FOTG210_RH_RUNNING)
/* Poll again later, but give up after about 20 ms */
if (fotg210->PSS_poll_count++ < 20) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_PSS,
- true);
+ true);
return;
}
fotg210_dbg(fotg210, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
/* Turn off the schedule after a while */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_DISABLE_PERIODIC,
- true);
+ FOTG210_HRTIMER_DISABLE_PERIODIC,
+ true);
}
}
}
if (fotg210->died_poll_count++ < 5) {
/* Try again later */
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_POLL_DEAD, true);
+ FOTG210_HRTIMER_POLL_DEAD, true);
return;
}
fotg210_warn(fotg210, "Waited too long for the controller to stop, giving up\n");
/* Handle unlinked interrupt QHs once they are gone from the hardware */
static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
{
- bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
+ bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
/*
* Process all the QHs on the intr_unlink list that were added
*/
fotg210->intr_unlinking = true;
while (fotg210->intr_unlink) {
- struct fotg210_qh *qh = fotg210->intr_unlink;
+ struct fotg210_qh *qh = fotg210->intr_unlink;
if (!stopped && qh->unlink_cycle == fotg210->intr_unlink_cycle)
break;
/* Handle remaining entries later */
if (fotg210->intr_unlink) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
- true);
+ true);
++fotg210->intr_unlink_cycle;
}
fotg210->intr_unlinking = false;
/* Wait for controller to stop using old iTDs and siTDs */
static void end_free_itds(struct fotg210_hcd *fotg210)
{
- struct fotg210_itd *itd, *n;
+ struct fotg210_itd *itd, *n;
if (fotg210->rh_state < FOTG210_RH_RUNNING)
fotg210->last_itd_to_free = NULL;
if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
COUNT(fotg210->stats.lost_iaa);
fotg210_writel(fotg210, STS_IAA,
- &fotg210->regs->status);
+ &fotg210->regs->status);
}
fotg210_dbg(fotg210, "IAA watchdog: status %x cmd %x\n",
/* Not needed if the controller isn't running or it's already enabled */
if (fotg210->rh_state != FOTG210_RH_RUNNING ||
(fotg210->enabled_hrtimer_events &
- BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
+ BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
return;
/*
if (fotg210->isoc_count > 0 || (fotg210->need_io_watchdog &&
fotg210->async_count + fotg210->intr_count > 0))
fotg210_enable_event(fotg210, FOTG210_HRTIMER_IO_WATCHDOG,
- true);
+ true);
}
-/*
- * Handler functions for the hrtimer event types.
+/* Handler functions for the hrtimer event types.
* Keep this array in the same order as the event types indexed by
* enum fotg210_hrtimer_event in fotg210.h.
*/
{
struct fotg210_hcd *fotg210 =
container_of(t, struct fotg210_hcd, hrtimer);
- ktime_t now;
- unsigned long events;
- unsigned long flags;
- unsigned e;
+ ktime_t now;
+ unsigned long events;
+ unsigned long flags;
+ unsigned e;
spin_lock_irqsave(&fotg210->lock, flags);
return HRTIMER_NORESTART;
}
-/*-------------------------------------------------------------------------*/
-
-#define fotg210_bus_suspend NULL
-#define fotg210_bus_resume NULL
-
-/*-------------------------------------------------------------------------*/
+#define fotg210_bus_suspend NULL
+#define fotg210_bus_resume NULL
-static int check_reset_complete(
- struct fotg210_hcd *fotg210,
- int index,
- u32 __iomem *status_reg,
- int port_status
-) {
+static int check_reset_complete(struct fotg210_hcd *fotg210, int index,
+ u32 __iomem *status_reg, int port_status)
+{
if (!(port_status & PORT_CONNECT))
return port_status;
if (!(port_status & PORT_PE)) {
/* with integrated TT, there's nobody to hand it to! */
fotg210_dbg(fotg210,
- "Failed to enable port %d on root hub TT\n",
- index+1);
+ "Failed to enable port %d on root hub TT\n",
+ index + 1);
return port_status;
} else {
fotg210_dbg(fotg210, "port %d reset complete, port enabled\n",
- index + 1);
+ index + 1);
}
return port_status;
}
-/*-------------------------------------------------------------------------*/
-
/* build "status change" packet (one or two bytes) from HC registers */
-static int
-fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
+static int fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp, status;
- u32 mask;
- int retval = 1;
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp, status;
+ u32 mask;
+ int retval = 1;
+ unsigned long flags;
/* init status to no-changes */
buf[0] = 0;
* controller by the user.
*/
- if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend)
- || (fotg210->reset_done[0] && time_after_eq(
- jiffies, fotg210->reset_done[0]))) {
+ if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend) ||
+ (fotg210->reset_done[0] &&
+ time_after_eq(jiffies, fotg210->reset_done[0]))) {
buf[0] |= 1 << 1;
status = STS_PCD;
}
return status ? retval : 0;
}
-/*-------------------------------------------------------------------------*/
-
-static void
-fotg210_hub_descriptor(
- struct fotg210_hcd *fotg210,
- struct usb_hub_descriptor *desc
-) {
- int ports = HCS_N_PORTS(fotg210->hcs_params);
- u16 temp;
+static void fotg210_hub_descriptor(struct fotg210_hcd *fotg210,
+ struct usb_hub_descriptor *desc)
+{
+ int ports = HCS_N_PORTS(fotg210->hcs_params);
+ u16 temp;
desc->bDescriptorType = USB_DT_HUB;
desc->bPwrOn2PwrGood = 10; /* fotg210 1.0, 2.3.9 says 20ms max */
desc->wHubCharacteristics = cpu_to_le16(temp);
}
-/*-------------------------------------------------------------------------*/
-
-static int fotg210_hub_control(
- struct usb_hcd *hcd,
- u16 typeReq,
- u16 wValue,
- u16 wIndex,
- char *buf,
- u16 wLength
-) {
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- int ports = HCS_N_PORTS(fotg210->hcs_params);
- u32 __iomem *status_reg = &fotg210->regs->port_status;
- u32 temp, temp1, status;
- unsigned long flags;
- int retval = 0;
- unsigned selector;
+static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ int ports = HCS_N_PORTS(fotg210->hcs_params);
+ u32 __iomem *status_reg = &fotg210->regs->port_status;
+ u32 temp, temp1, status;
+ unsigned long flags;
+ int retval = 0;
+ unsigned selector;
/*
* FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR.
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
fotg210_writel(fotg210, temp | OTGISR_OVC,
- &fotg210->regs->otgisr);
+ &fotg210->regs->otgisr);
break;
case USB_PORT_FEAT_C_RESET:
/* GetPortStatus clears reset */
break;
case GetHubDescriptor:
fotg210_hub_descriptor(fotg210, (struct usb_hub_descriptor *)
- buf);
+ buf);
break;
case GetHubStatus:
/* no hub-wide feature/status flags */
/* stop resume signaling */
temp = fotg210_readl(fotg210, status_reg);
- fotg210_writel(fotg210,
- temp & ~(PORT_RWC_BITS | PORT_RESUME),
- status_reg);
+ fotg210_writel(fotg210, temp &
+ ~(PORT_RWC_BITS | PORT_RESUME),
+ status_reg);
clear_bit(wIndex, &fotg210->resuming_ports);
retval = handshake(fotg210, status_reg,
- PORT_RESUME, 0, 2000 /* 2msec */);
+ PORT_RESUME, 0, 2000);/* 2ms */
if (retval != 0) {
fotg210_err(fotg210,
- "port %d resume error %d\n",
- wIndex + 1, retval);
+ "port %d resume error %d\n",
+ wIndex + 1, retval);
goto error;
}
temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
}
/* whoever resets must GetPortStatus to complete it!! */
- if ((temp & PORT_RESET)
- && time_after_eq(jiffies,
- fotg210->reset_done[wIndex])) {
+ if ((temp & PORT_RESET) && time_after_eq(jiffies,
+ fotg210->reset_done[wIndex])) {
status |= USB_PORT_STAT_C_RESET << 16;
fotg210->reset_done[wIndex] = 0;
clear_bit(wIndex, &fotg210->resuming_ports);
/* force reset to complete */
fotg210_writel(fotg210,
- temp & ~(PORT_RWC_BITS | PORT_RESET),
- status_reg);
+ temp & ~(PORT_RWC_BITS | PORT_RESET),
+ status_reg);
/* REVISIT: some hardware needs 550+ usec to clear
* this bit; seems too long to spin routinely...
*/
PORT_RESET, 0, 1000);
if (retval != 0) {
fotg210_err(fotg210, "port %d reset error %d\n",
- wIndex + 1, retval);
+ wIndex + 1, retval);
goto error;
}
temp &= ~PORT_RWC_BITS;
fotg210_writel(fotg210, temp, status_reg);
fotg210_dbg(fotg210, "port %d --> companion\n",
- wIndex + 1);
+ wIndex + 1);
temp = fotg210_readl(fotg210, status_reg);
}
* mode if we have hostpc feature
*/
fotg210_writel(fotg210, temp | PORT_SUSPEND,
- status_reg);
+ status_reg);
set_bit(wIndex, &fotg210->suspended_ports);
break;
case USB_PORT_FEAT_RESET:
{
return 0;
}
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
+
+/* There's basically three types of memory:
* - data used only by the HCD ... kmalloc is fine
* - async and periodic schedules, shared by HC and HCD ... these
* need to use dma_pool or dma_alloc_coherent
* No memory seen by this driver is pageable.
*/
-/*-------------------------------------------------------------------------*/
-
/* Allocate the key transfer structures from the previously allocated pool */
-
static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210,
- struct fotg210_qtd *qtd, dma_addr_t dma)
+ struct fotg210_qtd *qtd, dma_addr_t dma)
{
memset(qtd, 0, sizeof(*qtd));
qtd->qtd_dma = dma;
}
static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210,
- gfp_t flags)
+ gfp_t flags)
{
- struct fotg210_qtd *qtd;
- dma_addr_t dma;
+ struct fotg210_qtd *qtd;
+ dma_addr_t dma;
qtd = dma_pool_alloc(fotg210->qtd_pool, flags, &dma);
if (qtd != NULL)
}
static inline void fotg210_qtd_free(struct fotg210_hcd *fotg210,
- struct fotg210_qtd *qtd)
+ struct fotg210_qtd *qtd)
{
dma_pool_free(fotg210->qtd_pool, qtd, qtd->qtd_dma);
}
}
static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210,
- gfp_t flags)
+ gfp_t flags)
{
- struct fotg210_qh *qh;
- dma_addr_t dma;
+ struct fotg210_qh *qh;
+ dma_addr_t dma;
qh = kzalloc(sizeof(*qh), GFP_ATOMIC);
if (!qh)
return NULL;
}
-/*-------------------------------------------------------------------------*/
-
/* The queue heads and transfer descriptors are managed from pools tied
* to each of the "per device" structures.
* This is the initialisation and cleanup code.
if (fotg210->periodic)
dma_free_coherent(fotg210_to_hcd(fotg210)->self.controller,
- fotg210->periodic_size * sizeof(u32),
- fotg210->periodic, fotg210->periodic_dma);
+ fotg210->periodic_size * sizeof(u32),
+ fotg210->periodic, fotg210->periodic_dma);
fotg210->periodic = NULL;
/* shadow periodic table */
/* Hardware periodic table */
fotg210->periodic = (__le32 *)
dma_alloc_coherent(fotg210_to_hcd(fotg210)->self.controller,
- fotg210->periodic_size * sizeof(__le32),
- &fotg210->periodic_dma, 0);
+ fotg210->periodic_size * sizeof(__le32),
+ &fotg210->periodic_dma, 0);
if (fotg210->periodic == NULL)
goto fail;
/* software shadow of hardware table */
fotg210->pshadow = kcalloc(fotg210->periodic_size, sizeof(void *),
- flags);
+ flags);
if (fotg210->pshadow != NULL)
return 0;
fotg210_mem_cleanup(fotg210);
return -ENOMEM;
}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core. QH/QTD manipulation.
+/* EHCI hardware queue manipulation ... the core. QH/QTD manipulation.
*
* Control, bulk, and interrupt traffic all use "qh" lists. They list "qtd"
* entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
* buffer low/full speed data so the host collects it at high speed.
*/
-/*-------------------------------------------------------------------------*/
-
/* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf,
- size_t len, int token, int maxpacket)
+static int qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd,
+ dma_addr_t buf, size_t len, int token, int maxpacket)
{
- int i, count;
- u64 addr = buf;
+ int i, count;
+ u64 addr = buf;
/* one buffer entry per 4K ... first might be short or unaligned */
qtd->hw_buf[0] = cpu_to_hc32(fotg210, (u32)addr);
return count;
}
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
- struct fotg210_qtd *qtd)
+static inline void qh_update(struct fotg210_hcd *fotg210,
+ struct fotg210_qh *qh, struct fotg210_qtd *qtd)
{
struct fotg210_qh_hw *hw = qh->hw;
* ever clear it.
*/
if (!(hw->hw_info1 & cpu_to_hc32(fotg210, QH_TOGGLE_CTL))) {
- unsigned is_out, epnum;
+ unsigned is_out, epnum;
is_out = qh->is_out;
epnum = (hc32_to_cpup(fotg210, &hw->hw_info1) >> 8) & 0x0f;
* overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
* recovery (including urb dequeue) would need software changes to a QH...
*/
-static void
-qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static void qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
struct fotg210_qtd *qtd;
qh_update(fotg210, qh, qtd);
}
-/*-------------------------------------------------------------------------*/
-
static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd,
struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh = ep->hcpriv;
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh = ep->hcpriv;
+ unsigned long flags;
spin_lock_irqsave(&fotg210->lock, flags);
qh->clearing_tt = 0;
}
static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh,
- struct urb *urb, u32 token)
+ struct fotg210_qh *qh, struct urb *urb, u32 token)
{
/* If an async split transaction gets an error or is unlinked,
*/
if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
struct usb_device *tt = urb->dev->tt->hub;
+
dev_dbg(&tt->dev,
- "clear tt buffer port %d, a%d ep%d t%08x\n",
- urb->dev->ttport, urb->dev->devnum,
- usb_pipeendpoint(urb->pipe), token);
+ "clear tt buffer port %d, a%d ep%d t%08x\n",
+ urb->dev->ttport, urb->dev->devnum,
+ usb_pipeendpoint(urb->pipe), token);
if (urb->dev->tt->hub !=
- fotg210_to_hcd(fotg210)->self.root_hub) {
+ fotg210_to_hcd(fotg210)->self.root_hub) {
if (usb_hub_clear_tt_buffer(urb) == 0)
qh->clearing_tt = 1;
}
}
}
-static int qtd_copy_status(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- size_t length,
- u32 token
-)
+static int qtd_copy_status(struct fotg210_hcd *fotg210, struct urb *urb,
+ size_t length, u32 token)
{
- int status = -EINPROGRESS;
+ int status = -EINPROGRESS;
/* count IN/OUT bytes, not SETUP (even short packets) */
if (likely(QTD_PID(token) != 2))
} else if (token & QTD_STS_XACT) {
/* timeout, bad CRC, wrong PID, etc */
fotg210_dbg(fotg210, "devpath %s ep%d%s 3strikes\n",
- urb->dev->devpath,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out");
+ urb->dev->devpath,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out");
status = -EPROTO;
} else { /* unknown */
status = -EPROTO;
}
fotg210_dbg(fotg210,
- "dev%d ep%d%s qtd token %08x --> status %d\n",
- usb_pipedevice(urb->pipe),
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- token, status);
+ "dev%d ep%d%s qtd token %08x --> status %d\n",
+ usb_pipedevice(urb->pipe),
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ token, status);
}
return status;
}
-static void
-fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb, int status)
+static void fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb,
+ int status)
__releases(fotg210->lock)
__acquires(fotg210->lock)
{
if (likely(urb->hcpriv != NULL)) {
- struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv;
+ struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv;
/* S-mask in a QH means it's an interrupt urb */
if ((qh->hw->hw_info2 & cpu_to_hc32(fotg210, QH_SMASK)) != 0) {
#ifdef FOTG210_URB_TRACE
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s status %d len %d/%d\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- status,
- urb->actual_length, urb->transfer_buffer_length);
+ "%s %s urb %p ep%d%s status %d len %d/%d\n",
+ __func__, urb->dev->devpath, urb,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ status,
+ urb->actual_length, urb->transfer_buffer_length);
#endif
/* complete() can reenter this HCD */
static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
+/* Process and free completed qtds for a qh, returning URBs to drivers.
* Chases up to qh->hw_current. Returns number of completions called,
* indicating how much "real" work we did.
*/
-static unsigned
-qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static unsigned qh_completions(struct fotg210_hcd *fotg210,
+ struct fotg210_qh *qh)
{
- struct fotg210_qtd *last, *end = qh->dummy;
- struct list_head *entry, *tmp;
- int last_status;
- int stopped;
- unsigned count = 0;
- u8 state;
- struct fotg210_qh_hw *hw = qh->hw;
+ struct fotg210_qtd *last, *end = qh->dummy;
+ struct list_head *entry, *tmp;
+ int last_status;
+ int stopped;
+ unsigned count = 0;
+ u8 state;
+ struct fotg210_qh_hw *hw = qh->hw;
if (unlikely(list_empty(&qh->qtd_list)))
return count;
qh->qh_state = QH_STATE_COMPLETING;
stopped = (state == QH_STATE_IDLE);
- rescan:
+rescan:
last = NULL;
last_status = -EINPROGRESS;
qh->needs_rescan = 0;
* if queue is stopped, handles unlinks.
*/
list_for_each_safe(entry, tmp, &qh->qtd_list) {
- struct fotg210_qtd *qtd;
- struct urb *urb;
- u32 token = 0;
+ struct fotg210_qtd *qtd;
+ struct urb *urb;
+ u32 token = 0;
qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
urb = qtd->urb;
if (last) {
if (likely(last->urb != urb)) {
fotg210_urb_done(fotg210, last->urb,
- last_status);
+ last_status);
count++;
last_status = -EINPROGRESS;
}
token = hc32_to_cpu(fotg210, qtd->hw_token);
/* always clean up qtds the hc de-activated */
- retry_xacterr:
+retry_xacterr:
if ((token & QTD_STS_ACTIVE) == 0) {
/* Report Data Buffer Error: non-fatal but useful */
if (token & QTD_STS_DBE)
fotg210_dbg(fotg210,
"detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- urb,
- usb_endpoint_num(&urb->ep->desc),
+ urb, usb_endpoint_num(&urb->ep->desc),
usb_endpoint_dir_in(&urb->ep->desc)
? "in" : "out",
- urb->transfer_buffer_length,
- qtd,
- qh);
+ urb->transfer_buffer_length, qtd, qh);
/* on STALL, error, and short reads this urb must
* complete and all its qtds must be recycled.
* reach the software xacterr limit
*/
if ((token & QTD_STS_XACT) &&
- QTD_CERR(token) == 0 &&
- ++qh->xacterrs < QH_XACTERR_MAX &&
- !urb->unlinked) {
+ QTD_CERR(token) == 0 &&
+ ++qh->xacterrs < QH_XACTERR_MAX &&
+ !urb->unlinked) {
fotg210_dbg(fotg210,
- "detected XactErr len %zu/%zu retry %d\n",
- qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
+ "detected XactErr len %zu/%zu retry %d\n",
+ qtd->length - QTD_LENGTH(token),
+ qtd->length,
+ qh->xacterrs);
/* reset the token in the qtd and the
* qh overlay (which still contains
* URB_SHORT_NOT_OK was set so the driver submitting
* the urbs could clean it up.
*/
- } else if (IS_SHORT_READ(token)
- && !(qtd->hw_alt_next
- & FOTG210_LIST_END(fotg210))) {
+ } else if (IS_SHORT_READ(token) &&
+ !(qtd->hw_alt_next &
+ FOTG210_LIST_END(fotg210))) {
stopped = 1;
}
continue;
/* qh unlinked; token in overlay may be most current */
- if (state == QH_STATE_IDLE
- && cpu_to_hc32(fotg210, qtd->qtd_dma)
- == hw->hw_current) {
+ if (state == QH_STATE_IDLE &&
+ cpu_to_hc32(fotg210, qtd->qtd_dma)
+ == hw->hw_current) {
token = hc32_to_cpu(fotg210, hw->hw_token);
/* An unlink may leave an incomplete
* We have to clear it.
*/
fotg210_clear_tt_buffer(fotg210, qh, urb,
- token);
+ token);
}
}
if (last_status == -EINPROGRESS) {
last_status = qtd_copy_status(fotg210, urb,
qtd->length, token);
- if (last_status == -EREMOTEIO
- && (qtd->hw_alt_next
- & FOTG210_LIST_END(fotg210)))
+ if (last_status == -EREMOTEIO &&
+ (qtd->hw_alt_next &
+ FOTG210_LIST_END(fotg210)))
last_status = -EINPROGRESS;
/* As part of low/full-speed endpoint-halt processing
*/
if (last_status != -EPIPE)
fotg210_clear_tt_buffer(fotg210, qh,
- urb, token);
+ urb, token);
}
}
return count;
}
-/*-------------------------------------------------------------------------*/
-
/* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
/* ... and packet size, for any kind of endpoint descriptor */
#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
-/*
- * reverse of qh_urb_transaction: free a list of TDs.
+/* reverse of qh_urb_transaction: free a list of TDs.
* used for cleanup after errors, before HC sees an URB's TDs.
*/
-static void qtd_list_free(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list
-) {
- struct list_head *entry, *temp;
+static void qtd_list_free(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list)
+{
+ struct list_head *entry, *temp;
list_for_each_safe(entry, temp, qtd_list) {
- struct fotg210_qtd *qtd;
+ struct fotg210_qtd *qtd;
qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
list_del(&qtd->qtd_list);
}
}
-/*
- * create a list of filled qtds for this URB; won't link into qh.
+/* create a list of filled qtds for this URB; won't link into qh.
*/
-static struct list_head *
-qh_urb_transaction(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *head,
- gfp_t flags
-) {
- struct fotg210_qtd *qtd, *qtd_prev;
- dma_addr_t buf;
- int len, this_sg_len, maxpacket;
- int is_input;
- u32 token;
- int i;
- struct scatterlist *sg;
+static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
+ struct urb *urb, struct list_head *head, gfp_t flags)
+{
+ struct fotg210_qtd *qtd, *qtd_prev;
+ dma_addr_t buf;
+ int len, this_sg_len, maxpacket;
+ int is_input;
+ u32 token;
+ int i;
+ struct scatterlist *sg;
/*
* URBs map to sequences of QTDs: one logical transaction
* have the alt_next mechanism keep the queue running after the
* last data qtd (the only one, for control and most other cases).
*/
- if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
- || usb_pipecontrol(urb->pipe)))
+ if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0 ||
+ usb_pipecontrol(urb->pipe)))
qtd->hw_alt_next = FOTG210_LIST_END(fotg210);
/*
* (zero length).
*/
if (likely(urb->transfer_buffer_length != 0)) {
- int one_more = 0;
+ int one_more = 0;
if (usb_pipecontrol(urb->pipe)) {
one_more = 1;
return NULL;
}
-/*-------------------------------------------------------------------------*/
-/*
- * Would be best to create all qh's from config descriptors,
+/* Would be best to create all qh's from config descriptors,
* when each interface/altsetting is established. Unlink
* any previous qh and cancel its urbs first; endpoints are
* implicitly reset then (data toggle too).
*/
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
+/* Each QH holds a qtd list; a QH is used for everything except iso.
*
* For interrupt urbs, the scheduler must set the microframe scheduling
* mask(s) each time the QH gets scheduled. For highspeed, that's
* just one microframe in the s-mask. For split interrupt transactions
* there are additional complications: c-mask, maybe FSTNs.
*/
-static struct fotg210_qh *
-qh_make(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- gfp_t flags
-) {
- struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags);
- u32 info1 = 0, info2 = 0;
- int is_input, type;
- int maxp = 0;
- struct usb_tt *tt = urb->dev->tt;
- struct fotg210_qh_hw *hw;
+static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb,
+ gfp_t flags)
+{
+ struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags);
+ u32 info1 = 0, info2 = 0;
+ int is_input, type;
+ int maxp = 0;
+ struct usb_tt *tt = urb->dev->tt;
+ struct fotg210_qh_hw *hw;
if (!qh)
return qh;
*/
if (max_packet(maxp) > 1024) {
fotg210_dbg(fotg210, "bogus qh maxpacket %d\n",
- max_packet(maxp));
+ max_packet(maxp));
goto done;
}
urb->interval = qh->period << 3;
}
} else {
- int think_time;
+ int think_time;
/* gap is f(FS/LS transfer times) */
qh->gap_uf = 1 + usb_calc_bus_time(urb->dev->speed,
break;
default:
fotg210_dbg(fotg210, "bogus dev %p speed %d\n", urb->dev,
- urb->dev->speed);
+ urb->dev->speed);
done:
qh_destroy(fotg210, qh);
return NULL;
return qh;
}
-/*-------------------------------------------------------------------------*/
-
static void enable_async(struct fotg210_hcd *fotg210)
{
if (fotg210->async_count++)
static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- __hc32 dma = QH_NEXT(fotg210, qh->qh_dma);
- struct fotg210_qh *head;
+ __hc32 dma = QH_NEXT(fotg210, qh->qh_dma);
+ struct fotg210_qh *head;
/* Don't link a QH if there's a Clear-TT-Buffer pending */
if (unlikely(qh->clearing_tt))
enable_async(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
+/* For control/bulk/interrupt, return QH with these TDs appended.
* Allocates and initializes the QH if necessary.
* Returns null if it can't allocate a QH it needs to.
* If the QH has TDs (urbs) already, that's great.
*/
-static struct fotg210_qh *qh_append_tds(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- int epnum,
- void **ptr
-)
+static struct fotg210_qh *qh_append_tds(struct fotg210_hcd *fotg210,
+ struct urb *urb, struct list_head *qtd_list,
+ int epnum, void **ptr)
{
- struct fotg210_qh *qh = NULL;
- __hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
+ struct fotg210_qh *qh = NULL;
+ __hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
qh = (struct fotg210_qh *) *ptr;
if (unlikely(qh == NULL)) {
*ptr = qh;
}
if (likely(qh != NULL)) {
- struct fotg210_qtd *qtd;
+ struct fotg210_qtd *qtd;
if (unlikely(list_empty(qtd_list)))
qtd = NULL;
* only hc or qh_refresh() ever modify the overlay.
*/
if (likely(qtd != NULL)) {
- struct fotg210_qtd *dummy;
- dma_addr_t dma;
- __hc32 token;
+ struct fotg210_qtd *dummy;
+ dma_addr_t dma;
+ __hc32 token;
/* to avoid racing the HC, use the dummy td instead of
* the first td of our list (becomes new dummy). both
return qh;
}
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- int epnum;
- unsigned long flags;
- struct fotg210_qh *qh = NULL;
- int rc;
+static int submit_async(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list, gfp_t mem_flags)
+{
+ int epnum;
+ unsigned long flags;
+ struct fotg210_qh *qh = NULL;
+ int rc;
epnum = urb->ep->desc.bEndpointAddress;
#ifdef FOTG210_URB_TRACE
{
struct fotg210_qtd *qtd;
+
qtd = list_entry(qtd_list->next, struct fotg210_qtd, qtd_list);
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
- __func__, urb->dev->devpath, urb,
- epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
- urb->transfer_buffer_length,
- qtd, urb->ep->hcpriv);
+ "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
+ __func__, urb->dev->devpath, urb,
+ epnum & 0x0f, (epnum & USB_DIR_IN)
+ ? "in" : "out",
+ urb->transfer_buffer_length,
+ qtd, urb->ep->hcpriv);
}
#endif
*/
if (likely(qh->qh_state == QH_STATE_IDLE))
qh_link_async(fotg210, qh);
- done:
+done:
spin_unlock_irqrestore(&fotg210->lock, flags);
if (unlikely(qh == NULL))
qtd_list_free(fotg210, urb, qtd_list);
return rc;
}
-/*-------------------------------------------------------------------------*/
-
static void single_unlink_async(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
- struct fotg210_qh *prev;
+ struct fotg210_qh *prev;
/* Add to the end of the list of QHs waiting for the next IAAD */
qh->qh_state = QH_STATE_UNLINK;
&fotg210->regs->command);
fotg210_readl(fotg210, &fotg210->regs->command);
fotg210_enable_event(fotg210, FOTG210_HRTIMER_IAA_WATCHDOG,
- true);
+ true);
}
}
static void end_unlink_async(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
+ struct fotg210_qh *qh;
/* Process the idle QHs */
- restart:
+restart:
fotg210->async_unlinking = true;
while (fotg210->async_iaa) {
qh = fotg210->async_iaa;
/* QHs that haven't been empty for long enough will be handled later */
if (check_unlinks_later) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_ASYNC_UNLINKS,
- true);
+ true);
++fotg210->async_unlink_cycle;
}
}
/* caller must own fotg210->lock */
static void start_unlink_async(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
/*
* If the QH isn't linked then there's nothing we can do
start_iaa_cycle(fotg210, false);
}
-/*-------------------------------------------------------------------------*/
-
static void scan_async(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
- bool check_unlinks_later = false;
+ struct fotg210_qh *qh;
+ bool check_unlinks_later = false;
fotg210->qh_scan_next = fotg210->async->qh_next.qh;
while (fotg210->qh_scan_next) {
qh = fotg210->qh_scan_next;
fotg210->qh_scan_next = qh->qh_next.qh;
- rescan:
+rescan:
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
*/
if (check_unlinks_later && fotg210->rh_state == FOTG210_RH_RUNNING &&
!(fotg210->enabled_hrtimer_events &
- BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
+ BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
fotg210_enable_event(fotg210,
- FOTG210_HRTIMER_ASYNC_UNLINKS, true);
+ FOTG210_HRTIMER_ASYNC_UNLINKS, true);
++fotg210->async_unlink_cycle;
}
}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support: interrupt, iso, split iso
+/* EHCI scheduled transaction support: interrupt, iso, split iso
* These are called "periodic" transactions in the EHCI spec.
*
* Note that for interrupt transfers, the QH/QTD manipulation is shared
* It keeps track of every ITD (or SITD) that's linked, and holds enough
* pre-calculated schedule data to make appending to the queue be quick.
*/
-
static int fotg210_get_frame(struct usb_hcd *hcd);
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
+/* periodic_next_shadow - return "next" pointer on shadow list
* @periodic: host pointer to qh/itd
* @tag: hardware tag for type of this record
*/
-static union fotg210_shadow *
-periodic_next_shadow(struct fotg210_hcd *fotg210,
- union fotg210_shadow *periodic, __hc32 tag)
+static union fotg210_shadow *periodic_next_shadow(struct fotg210_hcd *fotg210,
+ union fotg210_shadow *periodic, __hc32 tag)
{
switch (hc32_to_cpu(fotg210, tag)) {
case Q_TYPE_QH:
}
}
-static __hc32 *
-shadow_next_periodic(struct fotg210_hcd *fotg210,
- union fotg210_shadow *periodic, __hc32 tag)
+static __hc32 *shadow_next_periodic(struct fotg210_hcd *fotg210,
+ union fotg210_shadow *periodic, __hc32 tag)
{
switch (hc32_to_cpu(fotg210, tag)) {
/* our fotg210_shadow.qh is actually software part */
/* caller must hold fotg210->lock */
static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame,
- void *ptr)
+ void *ptr)
{
- union fotg210_shadow *prev_p = &fotg210->pshadow[frame];
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow here = *prev_p;
+ union fotg210_shadow *prev_p = &fotg210->pshadow[frame];
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow here = *prev_p;
/* find predecessor of "ptr"; hw and shadow lists are in sync */
while (here.ptr && here.ptr != ptr) {
Q_NEXT_TYPE(fotg210, *hw_p));
*hw_p = *shadow_next_periodic(fotg210, &here,
- Q_NEXT_TYPE(fotg210, *hw_p));
+ Q_NEXT_TYPE(fotg210, *hw_p));
}
/* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe)
+static unsigned short periodic_usecs(struct fotg210_hcd *fotg210,
+ unsigned frame, unsigned uframe)
{
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow *q = &fotg210->pshadow[frame];
- unsigned usecs = 0;
- struct fotg210_qh_hw *hw;
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow *q = &fotg210->pshadow[frame];
+ unsigned usecs = 0;
+ struct fotg210_qh_hw *hw;
while (q->ptr) {
switch (hc32_to_cpu(fotg210, Q_NEXT_TYPE(fotg210, *hw_p))) {
}
if (usecs > fotg210->uframe_periodic_max)
fotg210_err(fotg210, "uframe %d sched overrun: %d usecs\n",
- frame * 8 + uframe, usecs);
+ frame * 8 + uframe, usecs);
return usecs;
}
-/*-------------------------------------------------------------------------*/
-
static int same_tt(struct usb_device *dev1, struct usb_device *dev2)
{
if (!dev1->tt || !dev2->tt)
* for a periodic transfer starting at the specified frame, using
* all the uframes in the mask.
*/
-static int tt_no_collision(
- struct fotg210_hcd *fotg210,
- unsigned period,
- struct usb_device *dev,
- unsigned frame,
- u32 uf_mask
-)
+static int tt_no_collision(struct fotg210_hcd *fotg210, unsigned period,
+ struct usb_device *dev, unsigned frame, u32 uf_mask)
{
if (period == 0) /* error */
return 0;
* calling convention doesn't make that distinction.
*/
for (; frame < fotg210->periodic_size; frame += period) {
- union fotg210_shadow here;
- __hc32 type;
- struct fotg210_qh_hw *hw;
+ union fotg210_shadow here;
+ __hc32 type;
+ struct fotg210_qh_hw *hw;
here = fotg210->pshadow[frame];
type = Q_NEXT_TYPE(fotg210, fotg210->periodic[frame]);
case Q_TYPE_QH:
hw = here.qh->hw;
if (same_tt(dev, here.qh->dev)) {
- u32 mask;
+ u32 mask;
mask = hc32_to_cpu(fotg210,
hw->hw_info2);
/* case Q_TYPE_FSTN: */
default:
fotg210_dbg(fotg210,
- "periodic frame %d bogus type %d\n",
- frame, type);
+ "periodic frame %d bogus type %d\n",
+ frame, type);
}
/* collision or error */
return 1;
}
-/*-------------------------------------------------------------------------*/
-
static void enable_periodic(struct fotg210_hcd *fotg210)
{
if (fotg210->periodic_count++)
fotg210_poll_PSS(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
/* periodic schedule slots have iso tds (normal or split) first, then a
* sparse tree for active interrupt transfers.
*
*/
static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- unsigned i;
- unsigned period = qh->period;
+ unsigned i;
+ unsigned period = qh->period;
dev_dbg(&qh->dev->dev,
- "link qh%d-%04x/%p start %d [%d/%d us]\n",
- period, hc32_to_cpup(fotg210, &qh->hw->hw_info2)
- & (QH_CMASK | QH_SMASK),
- qh, qh->start, qh->usecs, qh->c_usecs);
+ "link qh%d-%04x/%p start %d [%d/%d us]\n", period,
+ hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+ (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+ qh->c_usecs);
/* high bandwidth, or otherwise every microframe */
if (period == 0)
period = 1;
for (i = qh->start; i < fotg210->periodic_size; i += period) {
- union fotg210_shadow *prev = &fotg210->pshadow[i];
- __hc32 *hw_p = &fotg210->periodic[i];
- union fotg210_shadow here = *prev;
- __hc32 type = 0;
+ union fotg210_shadow *prev = &fotg210->pshadow[i];
+ __hc32 *hw_p = &fotg210->periodic[i];
+ union fotg210_shadow here = *prev;
+ __hc32 type = 0;
/* skip the iso nodes at list head */
while (here.ptr) {
}
static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
- unsigned i;
- unsigned period;
+ unsigned i;
+ unsigned period;
/*
* If qh is for a low/full-speed device, simply unlinking it
: (qh->usecs * 8);
dev_dbg(&qh->dev->dev,
- "unlink qh%d-%04x/%p start %d [%d/%d us]\n",
- qh->period,
- hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
- (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs, qh->c_usecs);
+ "unlink qh%d-%04x/%p start %d [%d/%d us]\n",
+ qh->period, hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+ (QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+ qh->c_usecs);
/* qh->qh_next still "live" to HC */
qh->qh_state = QH_STATE_UNLINK;
}
static void start_unlink_intr(struct fotg210_hcd *fotg210,
- struct fotg210_qh *qh)
+ struct fotg210_qh *qh)
{
/* If the QH isn't linked then there's nothing we can do
* unless we were called during a giveback, in which case
fotg210_handle_intr_unlinks(fotg210);
else if (fotg210->intr_unlink == qh) {
fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
- true);
+ true);
++fotg210->intr_unlink_cycle;
}
}
static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- struct fotg210_qh_hw *hw = qh->hw;
- int rc;
+ struct fotg210_qh_hw *hw = qh->hw;
+ int rc;
qh->qh_state = QH_STATE_IDLE;
hw->hw_next = FOTG210_LIST_END(fotg210);
/* reschedule QH iff another request is queued */
if (!list_empty(&qh->qtd_list) &&
- fotg210->rh_state == FOTG210_RH_RUNNING) {
+ fotg210->rh_state == FOTG210_RH_RUNNING) {
rc = qh_schedule(fotg210, qh);
/* An error here likely indicates handshake failure
disable_periodic(fotg210);
}
-/*-------------------------------------------------------------------------*/
-
-static int check_period(
- struct fotg210_hcd *fotg210,
- unsigned frame,
- unsigned uframe,
- unsigned period,
- unsigned usecs
-) {
- int claimed;
+static int check_period(struct fotg210_hcd *fotg210, unsigned frame,
+ unsigned uframe, unsigned period, unsigned usecs)
+{
+ int claimed;
/* complete split running into next frame?
* given FSTN support, we could sometimes check...
do {
for (uframe = 0; uframe < 7; uframe++) {
claimed = periodic_usecs(fotg210, frame,
- uframe);
+ uframe);
if (claimed > usecs)
return 0;
}
return 1;
}
-static int check_intr_schedule(
- struct fotg210_hcd *fotg210,
- unsigned frame,
- unsigned uframe,
- const struct fotg210_qh *qh,
- __hc32 *c_maskp
-)
+static int check_intr_schedule(struct fotg210_hcd *fotg210, unsigned frame,
+ unsigned uframe, const struct fotg210_qh *qh, __hc32 *c_maskp)
{
- int retval = -ENOSPC;
- u8 mask = 0;
+ int retval = -ENOSPC;
+ u8 mask = 0;
if (qh->c_usecs && uframe >= 6) /* FSTN territory? */
goto done;
mask |= 1 << uframe;
if (tt_no_collision(fotg210, qh->period, qh->dev, frame, mask)) {
if (!check_period(fotg210, frame, uframe + qh->gap_uf + 1,
- qh->period, qh->c_usecs))
+ qh->period, qh->c_usecs))
goto done;
if (!check_period(fotg210, frame, uframe + qh->gap_uf,
- qh->period, qh->c_usecs))
+ qh->period, qh->c_usecs))
goto done;
retval = 0;
}
*/
static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
{
- int status;
- unsigned uframe;
- __hc32 c_mask;
- unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
- struct fotg210_qh_hw *hw = qh->hw;
+ int status;
+ unsigned uframe;
+ __hc32 c_mask;
+ unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
+ struct fotg210_qh_hw *hw = qh->hw;
qh_refresh(fotg210, qh);
hw->hw_next = FOTG210_LIST_END(fotg210);
if (status) {
/* "normal" case, uframing flexible except with splits */
if (qh->period) {
- int i;
+ int i;
for (i = qh->period; status && i > 0; --i) {
frame = ++fotg210->random_frame % qh->period;
} else {
frame = 0;
status = check_intr_schedule(fotg210, 0, 0, qh,
- &c_mask);
+ &c_mask);
}
if (status)
goto done;
return status;
}
-static int intr_submit(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct list_head *qtd_list,
- gfp_t mem_flags
-) {
- unsigned epnum;
- unsigned long flags;
- struct fotg210_qh *qh;
- int status;
- struct list_head empty;
+static int intr_submit(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct list_head *qtd_list, gfp_t mem_flags)
+{
+ unsigned epnum;
+ unsigned long flags;
+ struct fotg210_qh *qh;
+ int status;
+ struct list_head empty;
/* get endpoint and transfer/schedule data */
epnum = urb->ep->desc.bEndpointAddress;
static void scan_intr(struct fotg210_hcd *fotg210)
{
- struct fotg210_qh *qh;
+ struct fotg210_qh *qh;
list_for_each_entry_safe(qh, fotg210->qh_scan_next,
- &fotg210->intr_qh_list, intr_node) {
- rescan:
+ &fotg210->intr_qh_list, intr_node) {
+rescan:
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
temp = qh_completions(fotg210, qh);
if (unlikely(qh->needs_rescan ||
(list_empty(&qh->qtd_list) &&
- qh->qh_state == QH_STATE_LINKED)))
+ qh->qh_state == QH_STATE_LINKED)))
start_unlink_intr(fotg210, qh);
else if (temp != 0)
goto rescan;
}
}
-/*-------------------------------------------------------------------------*/
-
/* fotg210_iso_stream ops work with both ITD and SITD */
-static struct fotg210_iso_stream *
-iso_stream_alloc(gfp_t mem_flags)
+static struct fotg210_iso_stream *iso_stream_alloc(gfp_t mem_flags)
{
struct fotg210_iso_stream *stream;
return stream;
}
-static void
-iso_stream_init(
- struct fotg210_hcd *fotg210,
- struct fotg210_iso_stream *stream,
- struct usb_device *dev,
- int pipe,
- unsigned interval
-)
+static void iso_stream_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_stream *stream, struct usb_device *dev,
+ int pipe, unsigned interval)
{
- u32 buf1;
- unsigned epnum, maxp;
- int is_input;
- long bandwidth;
- unsigned multi;
+ u32 buf1;
+ unsigned epnum, maxp;
+ int is_input;
+ long bandwidth;
+ unsigned multi;
/*
* this might be a "high bandwidth" highspeed endpoint,
stream->maxp = maxp;
}
-static struct fotg210_iso_stream *
-iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
+static struct fotg210_iso_stream *iso_stream_find(struct fotg210_hcd *fotg210,
+ struct urb *urb)
{
- unsigned epnum;
- struct fotg210_iso_stream *stream;
+ unsigned epnum;
+ struct fotg210_iso_stream *stream;
struct usb_host_endpoint *ep;
- unsigned long flags;
+ unsigned long flags;
epnum = usb_pipeendpoint(urb->pipe);
if (usb_pipein(urb->pipe))
/* if dev->ep[epnum] is a QH, hw is set */
} else if (unlikely(stream->hw != NULL)) {
fotg210_dbg(fotg210, "dev %s ep%d%s, not iso??\n",
- urb->dev->devpath, epnum,
- usb_pipein(urb->pipe) ? "in" : "out");
+ urb->dev->devpath, epnum,
+ usb_pipein(urb->pipe) ? "in" : "out");
stream = NULL;
}
return stream;
}
-/*-------------------------------------------------------------------------*/
-
/* fotg210_iso_sched ops can be ITD-only or SITD-only */
-static struct fotg210_iso_sched *
-iso_sched_alloc(unsigned packets, gfp_t mem_flags)
+static struct fotg210_iso_sched *iso_sched_alloc(unsigned packets,
+ gfp_t mem_flags)
{
- struct fotg210_iso_sched *iso_sched;
- int size = sizeof(*iso_sched);
+ struct fotg210_iso_sched *iso_sched;
+ int size = sizeof(*iso_sched);
size += packets * sizeof(struct fotg210_iso_packet);
iso_sched = kzalloc(size, mem_flags);
return iso_sched;
}
-static inline void
-itd_sched_init(
- struct fotg210_hcd *fotg210,
- struct fotg210_iso_sched *iso_sched,
- struct fotg210_iso_stream *stream,
- struct urb *urb
-)
+static inline void itd_sched_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_sched *iso_sched,
+ struct fotg210_iso_stream *stream, struct urb *urb)
{
- unsigned i;
- dma_addr_t dma = urb->transfer_dma;
+ unsigned i;
+ dma_addr_t dma = urb->transfer_dma;
/* how many uframes are needed for these transfers */
iso_sched->span = urb->number_of_packets * stream->interval;
* when we fit new itds into the schedule.
*/
for (i = 0; i < urb->number_of_packets; i++) {
- struct fotg210_iso_packet *uframe = &iso_sched->packet[i];
- unsigned length;
- dma_addr_t buf;
- u32 trans;
+ struct fotg210_iso_packet *uframe = &iso_sched->packet[i];
+ unsigned length;
+ dma_addr_t buf;
+ u32 trans;
length = urb->iso_frame_desc[i].length;
buf = dma + urb->iso_frame_desc[i].offset;
}
}
-static void
-iso_sched_free(
- struct fotg210_iso_stream *stream,
- struct fotg210_iso_sched *iso_sched
-)
+static void iso_sched_free(struct fotg210_iso_stream *stream,
+ struct fotg210_iso_sched *iso_sched)
{
if (!iso_sched)
return;
kfree(iso_sched);
}
-static int
-itd_urb_transaction(
- struct fotg210_iso_stream *stream,
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- gfp_t mem_flags
-)
+static int itd_urb_transaction(struct fotg210_iso_stream *stream,
+ struct fotg210_hcd *fotg210, struct urb *urb, gfp_t mem_flags)
{
- struct fotg210_itd *itd;
- dma_addr_t itd_dma;
- int i;
- unsigned num_itds;
- struct fotg210_iso_sched *sched;
- unsigned long flags;
+ struct fotg210_itd *itd;
+ dma_addr_t itd_dma;
+ int i;
+ unsigned num_itds;
+ struct fotg210_iso_sched *sched;
+ unsigned long flags;
sched = iso_sched_alloc(urb->number_of_packets, mem_flags);
if (unlikely(sched == NULL))
list_del(&itd->itd_list);
itd_dma = itd->itd_dma;
} else {
- alloc_itd:
+alloc_itd:
spin_unlock_irqrestore(&fotg210->lock, flags);
itd = dma_pool_alloc(fotg210->itd_pool, mem_flags,
&itd_dma);
return 0;
}
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok(
- struct fotg210_hcd *fotg210,
- u32 mod,
- u32 uframe,
- u8 usecs,
- u32 period
-)
+static inline int itd_slot_ok(struct fotg210_hcd *fotg210, u32 mod, u32 uframe,
+ u8 usecs, u32 period)
{
uframe %= period;
do {
return 1;
}
-/*
- * This scheduler plans almost as far into the future as it has actual
+/* This scheduler plans almost as far into the future as it has actual
* periodic schedule slots. (Affected by TUNE_FLS, which defaults to
* "as small as possible" to be cache-friendlier.) That limits the size
* transfers you can stream reliably; avoid more than 64 msec per urb.
* given FOTG210_TUNE_FLS and the slop). Or, write a smarter scheduler!
*/
-#define SCHEDULE_SLOP 80 /* microframes */
+#define SCHEDULE_SLOP 80 /* microframes */
-static int
-iso_stream_schedule(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- struct fotg210_iso_stream *stream
-)
+static int iso_stream_schedule(struct fotg210_hcd *fotg210, struct urb *urb,
+ struct fotg210_iso_stream *stream)
{
- u32 now, next, start, period, span;
- int status;
- unsigned mod = fotg210->periodic_size << 3;
- struct fotg210_iso_sched *sched = urb->hcpriv;
+ u32 now, next, start, period, span;
+ int status;
+ unsigned mod = fotg210->periodic_size << 3;
+ struct fotg210_iso_sched *sched = urb->hcpriv;
period = urb->interval;
span = sched->span;
* slot in the schedule, implicitly assuming URB_ISO_ASAP.
*/
if (likely(!list_empty(&stream->td_list))) {
- u32 excess;
+ u32 excess;
/* For high speed devices, allow scheduling within the
* isochronous scheduling threshold. For full speed devices
*/
else {
int done = 0;
+
start = SCHEDULE_SLOP + (now & ~0x07);
/* NOTE: assumes URB_ISO_ASAP, to limit complexity/bugs */
/* no room in the schedule */
if (!done) {
fotg210_dbg(fotg210, "iso resched full %p (now %d max %d)\n",
- urb, now, now + mod);
+ urb, now, now + mod);
status = -ENOSPC;
goto fail;
}
}
/* Tried to schedule too far into the future? */
- if (unlikely(start - now + span - period
- >= mod - 2 * SCHEDULE_SLOP)) {
+ if (unlikely(start - now + span - period >=
+ mod - 2 * SCHEDULE_SLOP)) {
fotg210_dbg(fotg210, "request %p would overflow (%d+%d >= %d)\n",
urb, start - now, span - period,
mod - 2 * SCHEDULE_SLOP);
fotg210->next_frame = now >> 3;
return 0;
- fail:
+fail:
iso_sched_free(stream, sched);
urb->hcpriv = NULL;
return status;
}
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream,
- struct fotg210_itd *itd)
+static inline void itd_init(struct fotg210_hcd *fotg210,
+ struct fotg210_iso_stream *stream, struct fotg210_itd *itd)
{
int i;
/* All other fields are filled when scheduling */
}
-static inline void
-itd_patch(
- struct fotg210_hcd *fotg210,
- struct fotg210_itd *itd,
- struct fotg210_iso_sched *iso_sched,
- unsigned index,
- u16 uframe
-)
+static inline void itd_patch(struct fotg210_hcd *fotg210,
+ struct fotg210_itd *itd, struct fotg210_iso_sched *iso_sched,
+ unsigned index, u16 uframe)
{
- struct fotg210_iso_packet *uf = &iso_sched->packet[index];
- unsigned pg = itd->pg;
+ struct fotg210_iso_packet *uf = &iso_sched->packet[index];
+ unsigned pg = itd->pg;
uframe &= 0x07;
itd->index[uframe] = index;
/* iso_frame_desc[].offset must be strictly increasing */
if (unlikely(uf->cross)) {
- u64 bufp = uf->bufp + 4096;
+ u64 bufp = uf->bufp + 4096;
itd->pg = ++pg;
itd->hw_bufp[pg] |= cpu_to_hc32(fotg210, bufp & ~(u32)0);
}
}
-static inline void
-itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd)
+static inline void itd_link(struct fotg210_hcd *fotg210, unsigned frame,
+ struct fotg210_itd *itd)
{
- union fotg210_shadow *prev = &fotg210->pshadow[frame];
- __hc32 *hw_p = &fotg210->periodic[frame];
- union fotg210_shadow here = *prev;
- __hc32 type = 0;
+ union fotg210_shadow *prev = &fotg210->pshadow[frame];
+ __hc32 *hw_p = &fotg210->periodic[frame];
+ union fotg210_shadow here = *prev;
+ __hc32 type = 0;
/* skip any iso nodes which might belong to previous microframes */
while (here.ptr) {
}
/* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
- struct fotg210_hcd *fotg210,
- struct urb *urb,
- unsigned mod,
- struct fotg210_iso_stream *stream
-)
-{
- int packet;
- unsigned next_uframe, uframe, frame;
- struct fotg210_iso_sched *iso_sched = urb->hcpriv;
- struct fotg210_itd *itd;
+static void itd_link_urb(struct fotg210_hcd *fotg210, struct urb *urb,
+ unsigned mod, struct fotg210_iso_stream *stream)
+{
+ int packet;
+ unsigned next_uframe, uframe, frame;
+ struct fotg210_iso_sched *iso_sched = urb->hcpriv;
+ struct fotg210_itd *itd;
next_uframe = stream->next_uframe & (mod - 1);
if (((next_uframe >> 3) != frame)
|| packet == urb->number_of_packets) {
itd_link(fotg210, frame & (fotg210->periodic_size - 1),
- itd);
+ itd);
itd = NULL;
}
}
enable_periodic(fotg210);
}
-#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
- FOTG210_ISOC_XACTERR)
+#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
+ FOTG210_ISOC_XACTERR)
/* Process and recycle a completed ITD. Return true iff its urb completed,
* and hence its completion callback probably added things to the hardware
*/
static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
{
- struct urb *urb = itd->urb;
- struct usb_iso_packet_descriptor *desc;
- u32 t;
- unsigned uframe;
- int urb_index = -1;
- struct fotg210_iso_stream *stream = itd->stream;
- struct usb_device *dev;
- bool retval = false;
+ struct urb *urb = itd->urb;
+ struct usb_iso_packet_descriptor *desc;
+ u32 t;
+ unsigned uframe;
+ int urb_index = -1;
+ struct fotg210_iso_stream *stream = itd->stream;
+ struct usb_device *dev;
+ bool retval = false;
/* for each uframe with a packet */
for (uframe = 0; uframe < 8; uframe++) {
goto done;
/* ASSERT: it's really the last itd for this urb
- list_for_each_entry (itd, &stream->td_list, itd_list)
- BUG_ON (itd->urb == urb);
+ * list_for_each_entry (itd, &stream->td_list, itd_list)
+ * BUG_ON (itd->urb == urb);
*/
/* give urb back to the driver; completion often (re)submits */
return retval;
}
-/*-------------------------------------------------------------------------*/
-
static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
- gfp_t mem_flags)
+ gfp_t mem_flags)
{
- int status = -EINVAL;
- unsigned long flags;
- struct fotg210_iso_stream *stream;
+ int status = -EINVAL;
+ unsigned long flags;
+ struct fotg210_iso_stream *stream;
/* Get iso_stream head */
stream = iso_stream_find(fotg210, urb);
return -ENOMEM;
}
if (unlikely(urb->interval != stream->interval &&
- fotg210_port_speed(fotg210, 0) ==
- USB_PORT_STAT_HIGH_SPEED)) {
- fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
+ fotg210_port_speed(fotg210, 0) ==
+ USB_PORT_STAT_HIGH_SPEED)) {
+ fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
stream->interval, urb->interval);
- goto done;
+ goto done;
}
#ifdef FOTG210_URB_TRACE
fotg210_dbg(fotg210,
- "%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
- __func__, urb->dev->devpath, urb,
- usb_pipeendpoint(urb->pipe),
- usb_pipein(urb->pipe) ? "in" : "out",
- urb->transfer_buffer_length,
- urb->number_of_packets, urb->interval,
- stream);
+ "%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
+ __func__, urb->dev->devpath, urb,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipein(urb->pipe) ? "in" : "out",
+ urb->transfer_buffer_length,
+ urb->number_of_packets, urb->interval,
+ stream);
#endif
/* allocate ITDs w/o locking anything */
itd_link_urb(fotg210, urb, fotg210->periodic_size << 3, stream);
else
usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb);
- done_not_linked:
+done_not_linked:
spin_unlock_irqrestore(&fotg210->lock, flags);
- done:
+done:
return status;
}
break;
default:
fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
- type, frame, q.ptr);
+ type, frame, q.ptr);
/* FALL THROUGH */
case Q_TYPE_QH:
case Q_TYPE_FSTN:
}
fotg210->next_frame = now_frame;
}
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
+
+/* Display / Set uframe_periodic_max
*/
static ssize_t show_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+ struct device_attribute *attr, char *buf)
{
- struct fotg210_hcd *fotg210;
- int n;
+ struct fotg210_hcd *fotg210;
+ int n;
fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
n = scnprintf(buf, PAGE_SIZE, "%d\n", fotg210->uframe_periodic_max);
static ssize_t store_uframe_periodic_max(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+ struct device_attribute *attr, const char *buf, size_t count)
{
- struct fotg210_hcd *fotg210;
- unsigned uframe_periodic_max;
- unsigned frame, uframe;
- unsigned short allocated_max;
- unsigned long flags;
- ssize_t ret;
+ struct fotg210_hcd *fotg210;
+ unsigned uframe_periodic_max;
+ unsigned frame, uframe;
+ unsigned short allocated_max;
+ unsigned long flags;
+ ssize_t ret;
fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
fotg210_info(fotg210, "rejecting invalid request for uframe_periodic_max=%u\n",
- uframe_periodic_max);
+ uframe_periodic_max);
return -EINVAL;
}
for (frame = 0; frame < fotg210->periodic_size; ++frame)
for (uframe = 0; uframe < 7; ++uframe)
allocated_max = max(allocated_max,
- periodic_usecs(fotg210, frame, uframe));
+ periodic_usecs(fotg210, frame,
+ uframe));
if (allocated_max > uframe_periodic_max) {
fotg210_info(fotg210,
- "cannot decrease uframe_periodic_max because "
- "periodic bandwidth is already allocated "
- "(%u > %u)\n",
- allocated_max, uframe_periodic_max);
+ "cannot decrease uframe_periodic_max because periodic bandwidth is already allocated (%u > %u)\n",
+ allocated_max, uframe_periodic_max);
goto out_unlock;
}
}
/* increasing is always ok */
- fotg210_info(fotg210, "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
- 100 * uframe_periodic_max/125, uframe_periodic_max);
+ fotg210_info(fotg210,
+ "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
+ 100 * uframe_periodic_max/125, uframe_periodic_max);
if (uframe_periodic_max != 100)
fotg210_warn(fotg210, "max periodic bandwidth set is non-standard\n");
static inline int create_sysfs_files(struct fotg210_hcd *fotg210)
{
- struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
- int i = 0;
+ struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
+ int i = 0;
if (i)
goto out;
static inline void remove_sysfs_files(struct fotg210_hcd *fotg210)
{
- struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
+ struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
device_remove_file(controller, &dev_attr_uframe_periodic_max);
}
-/*-------------------------------------------------------------------------*/
-
/* On some systems, leaving remote wakeup enabled prevents system shutdown.
* The firmware seems to think that powering off is a wakeup event!
* This routine turns off remote wakeup and everything else, on all ports.
fotg210_writel(fotg210, PORT_RWC_BITS, status_reg);
}
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
+/* Halt HC, turn off all ports, and let the BIOS use the companion controllers.
* Must be called with interrupts enabled and the lock not held.
*/
static void fotg210_silence_controller(struct fotg210_hcd *fotg210)
*/
static void fotg210_shutdown(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
spin_lock_irq(&fotg210->lock);
fotg210->shutdown = true;
hrtimer_cancel(&fotg210->hrtimer);
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * fotg210_work is called from some interrupts, timers, and so on.
+/* fotg210_work is called from some interrupts, timers, and so on.
* it calls driver completion functions, after dropping fotg210->lock.
*/
static void fotg210_work(struct fotg210_hcd *fotg210)
}
fotg210->scanning = true;
- rescan:
+rescan:
fotg210->need_rescan = false;
if (fotg210->async_count)
scan_async(fotg210);
turn_on_io_watchdog(fotg210);
}
-/*
- * Called when the fotg210_hcd module is removed.
+/* Called when the fotg210_hcd module is removed.
*/
static void fotg210_stop(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
fotg210_dbg(fotg210, "stop\n");
spin_unlock_irq(&fotg210->lock);
fotg210_mem_cleanup(fotg210);
-#ifdef FOTG210_STATS
+#ifdef FOTG210_STATS
fotg210_dbg(fotg210, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
- fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
- fotg210->stats.lost_iaa);
+ fotg210->stats.normal, fotg210->stats.error,
+ fotg210->stats.iaa, fotg210->stats.lost_iaa);
fotg210_dbg(fotg210, "complete %ld unlink %ld\n",
- fotg210->stats.complete, fotg210->stats.unlink);
+ fotg210->stats.complete, fotg210->stats.unlink);
#endif
dbg_status(fotg210, "fotg210_stop completed",
- fotg210_readl(fotg210, &fotg210->regs->status));
+ fotg210_readl(fotg210, &fotg210->regs->status));
}
/* one-time init, only for memory state */
static int hcd_fotg210_init(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp;
- int retval;
- u32 hcc_params;
- struct fotg210_qh_hw *hw;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp;
+ int retval;
+ u32 hcc_params;
+ struct fotg210_qh_hw *hw;
spin_lock_init(&fotg210->lock);
/* start HC running; it's halted, hcd_fotg210_init() has been run (once) */
static int fotg210_run(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 temp;
- u32 hcc_params;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 temp;
+ u32 hcc_params;
hcd->uses_new_polling = 1;
/* EHCI spec section 4.1 */
fotg210_writel(fotg210, fotg210->periodic_dma,
- &fotg210->regs->frame_list);
+ &fotg210->regs->frame_list);
fotg210_writel(fotg210, (u32)fotg210->async->qh_dma,
- &fotg210->regs->async_next);
+ &fotg210->regs->async_next);
/*
* hcc_params controls whether fotg210->regs->segment must (!!!)
fotg210->last_periodic_enable = ktime_get_real();
temp = HC_VERSION(fotg210,
- fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+ fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
fotg210_info(fotg210,
- "USB %x.%x started, EHCI %x.%02x\n",
- ((fotg210->sbrn & 0xf0)>>4), (fotg210->sbrn & 0x0f),
- temp >> 8, temp & 0xff);
+ "USB %x.%x started, EHCI %x.%02x\n",
+ ((fotg210->sbrn & 0xf0) >> 4), (fotg210->sbrn & 0x0f),
+ temp >> 8, temp & 0xff);
fotg210_writel(fotg210, INTR_MASK,
- &fotg210->regs->intr_enable); /* Turn On Interrupts */
+ &fotg210->regs->intr_enable); /* Turn On Interrupts */
/* GRR this is run-once init(), being done every time the HC starts.
* So long as they're part of class devices, we can't do it init()
int retval;
fotg210->regs = (void __iomem *)fotg210->caps +
- HC_LENGTH(fotg210,
- fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+ HC_LENGTH(fotg210,
+ fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
dbg_hcs_params(fotg210, "reset");
dbg_hcc_params(fotg210, "reset");
/* cache this readonly data; minimize chip reads */
fotg210->hcs_params = fotg210_readl(fotg210,
- &fotg210->caps->hcs_params);
+ &fotg210->caps->hcs_params);
fotg210->sbrn = HCD_USB2;
return 0;
}
-/*-------------------------------------------------------------------------*/
-
static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- u32 status, masked_status, pcd_status = 0, cmd;
- int bh;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ u32 status, masked_status, pcd_status = 0, cmd;
+ int bh;
spin_lock(&fotg210->lock);
/* Shared IRQ? */
if (!masked_status ||
- unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
+ unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
spin_unlock(&fotg210->lock);
return IRQ_NONE;
}
if (test_bit(0, &fotg210->suspended_ports) &&
((pstatus & PORT_RESUME) ||
- !(pstatus & PORT_SUSPEND)) &&
+ !(pstatus & PORT_SUSPEND)) &&
(pstatus & PORT_PE) &&
fotg210->reset_done[0] == 0) {
fotg210->rh_state = FOTG210_RH_STOPPING;
fotg210->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
fotg210_writel(fotg210, fotg210->command,
- &fotg210->regs->command);
+ &fotg210->regs->command);
fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable);
fotg210_handle_controller_death(fotg210);
return IRQ_HANDLED;
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
+/* non-error returns are a promise to giveback() the urb later
* we drop ownership so next owner (or urb unlink) can get it
*
* urb + dev is in hcd.self.controller.urb_list
* NOTE: control, bulk, and interrupt share the same code to append TDs
* to a (possibly active) QH, and the same QH scanning code.
*/
-static int fotg210_urb_enqueue(
- struct usb_hcd *hcd,
- struct urb *urb,
- gfp_t mem_flags
-) {
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct list_head qtd_list;
+static int fotg210_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct list_head qtd_list;
INIT_LIST_HEAD(&qtd_list);
static int fotg210_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh;
- unsigned long flags;
- int rc;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh;
+ unsigned long flags;
+ int rc;
spin_lock_irqsave(&fotg210->lock, flags);
rc = usb_hcd_check_unlink_urb(hcd, urb, status);
return rc;
}
-/*-------------------------------------------------------------------------*/
-
/* bulk qh holds the data toggle */
-static void
-fotg210_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- unsigned long flags;
- struct fotg210_qh *qh, *tmp;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ unsigned long flags;
+ struct fotg210_qh *qh, *tmp;
/* ASSERT: any requests/urbs are being unlinked */
/* ASSERT: nobody can be submitting urbs for this any more */
* accelerate iso completions ... so spin a while.
*/
if (qh->hw == NULL) {
- struct fotg210_iso_stream *stream = ep->hcpriv;
+ struct fotg210_iso_stream *stream = ep->hcpriv;
if (!list_empty(&stream->td_list))
goto idle_timeout;
* that's not our job. just leak this memory.
*/
fotg210_err(fotg210, "qh %p (#%02x) state %d%s\n",
- qh, ep->desc.bEndpointAddress, qh->qh_state,
- list_empty(&qh->qtd_list) ? "" : "(has tds)");
+ qh, ep->desc.bEndpointAddress, qh->qh_state,
+ list_empty(&qh->qtd_list) ? "" : "(has tds)");
break;
}
- done:
+done:
ep->hcpriv = NULL;
spin_unlock_irqrestore(&fotg210->lock, flags);
}
-static void
-fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_reset(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
- struct fotg210_qh *qh;
- int eptype = usb_endpoint_type(&ep->desc);
- int epnum = usb_endpoint_num(&ep->desc);
- int is_out = usb_endpoint_dir_out(&ep->desc);
- unsigned long flags;
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_qh *qh;
+ int eptype = usb_endpoint_type(&ep->desc);
+ int epnum = usb_endpoint_num(&ep->desc);
+ int is_out = usb_endpoint_dir_out(&ep->desc);
+ unsigned long flags;
if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
return;
static int fotg210_get_frame(struct usb_hcd *hcd)
{
- struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+
return (fotg210_read_frame_index(fotg210) >> 3) %
fotg210->periodic_size;
}
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
+/* The EHCI in ChipIdea HDRC cannot be a separate module or device,
* because its registers (and irq) are shared between host/gadget/otg
* functions and in order to facilitate role switching we cannot
* give the fotg210 driver exclusive access to those.
u32 value;
iowrite32(GMIR_MDEV_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY,
- &fotg210->regs->gmir);
+ &fotg210->regs->gmir);
value = ioread32(&fotg210->regs->otgcsr);
value &= ~OTGCSR_A_BUS_DROP;
*/
static int fotg210_hcd_probe(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd;
- struct resource *res;
- int irq;
- int retval = -ENODEV;
- struct fotg210_hcd *fotg210;
+ struct device *dev = &pdev->dev;
+ struct usb_hcd *hcd;
+ struct resource *res;
+ int irq;
+ int retval = -ENODEV;
+ struct fotg210_hcd *fotg210;
if (usb_disabled())
return -ENODEV;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
- dev_err(dev,
- "Found HC with no IRQ. Check %s setup!\n",
- dev_name(dev));
+ dev_err(dev, "Found HC with no IRQ. Check %s setup!\n",
+ dev_name(dev));
return -ENODEV;
}
*/
static int fotg210_hcd_remove(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct device *dev = &pdev->dev;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
if (!hcd)
return 0;
pr_warn(KERN_WARNING "Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n");
pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
- hcd_name,
- sizeof(struct fotg210_qh), sizeof(struct fotg210_qtd),
- sizeof(struct fotg210_itd));
+ hcd_name, sizeof(struct fotg210_qh),
+ sizeof(struct fotg210_qtd),
+ sizeof(struct fotg210_itd));
fotg210_debug_root = debugfs_create_dir("fotg210", usb_debug_root);
if (!fotg210_debug_root) {
projects / linux-beck.git / commitdiff