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Diffstat (limited to 'drivers/usb/chipidea/debug.c')
-rw-r--r--drivers/usb/chipidea/debug.c888
1 files changed, 194 insertions, 694 deletions
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c
index a62c4a47d52..36a7063a6cb 100644
--- a/drivers/usb/chipidea/debug.c
+++ b/drivers/usb/chipidea/debug.c
@@ -1,590 +1,126 @@
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dmapool.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/pm_runtime.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/chipidea.h>
#include "ci.h"
#include "udc.h"
#include "bits.h"
#include "debug.h"
-/* Interrupt statistics */
-#define ISR_MASK 0x1F
-static struct isr_statistics {
- u32 test;
- u32 ui;
- u32 uei;
- u32 pci;
- u32 uri;
- u32 sli;
- u32 none;
- struct {
- u32 cnt;
- u32 buf[ISR_MASK+1];
- u32 idx;
- } hndl;
-} isr_statistics;
-
-void dbg_interrupt(u32 intmask)
-{
- if (!intmask) {
- isr_statistics.none++;
- return;
- }
-
- isr_statistics.hndl.buf[isr_statistics.hndl.idx++] = intmask;
- isr_statistics.hndl.idx &= ISR_MASK;
- isr_statistics.hndl.cnt++;
-
- if (USBi_URI & intmask)
- isr_statistics.uri++;
- if (USBi_PCI & intmask)
- isr_statistics.pci++;
- if (USBi_UEI & intmask)
- isr_statistics.uei++;
- if (USBi_UI & intmask)
- isr_statistics.ui++;
- if (USBi_SLI & intmask)
- isr_statistics.sli++;
-}
-
/**
- * hw_register_read: reads all device registers (execute without interruption)
- * @buf: destination buffer
- * @size: buffer size
- *
- * This function returns number of registers read
+ * ci_device_show: prints information about device capabilities and status
*/
-static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
+static int ci_device_show(struct seq_file *s, void *data)
{
- unsigned i;
-
- if (size > ci->hw_bank.size)
- size = ci->hw_bank.size;
-
- for (i = 0; i < size; i++)
- buf[i] = hw_read(ci, i * sizeof(u32), ~0);
-
- return size;
-}
-
-/**
- * hw_register_write: writes to register
- * @addr: register address
- * @data: register value
- *
- * This function returns an error code
- */
-static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
-{
- /* align */
- addr /= sizeof(u32);
-
- if (addr >= ci->hw_bank.size)
- return -EINVAL;
-
- /* align */
- addr *= sizeof(u32);
-
- hw_write(ci, addr, ~0, data);
- return 0;
-}
-
-/**
- * hw_intr_clear: disables interrupt & clears interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_clear(struct ci13xxx *ci, int n)
-{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, OP_USBINTR, BIT(n), 0);
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- return 0;
-}
-
-/**
- * hw_intr_force: enables interrupt & forces interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_force(struct ci13xxx *ci, int n)
-{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
- hw_write(ci, OP_USBINTR, BIT(n), BIT(n));
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
- return 0;
-}
-
-/**
- * show_device: prints information about device capabilities and status
- *
- * Check "device.h" for details
- */
-static ssize_t show_device(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
struct usb_gadget *gadget = &ci->gadget;
- int n = 0;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ seq_printf(s, "speed = %d\n", gadget->speed);
+ seq_printf(s, "max_speed = %d\n", gadget->max_speed);
+ seq_printf(s, "is_otg = %d\n", gadget->is_otg);
+ seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral);
+ seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable);
+ seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support);
+ seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);
+ seq_printf(s, "name = %s\n",
+ (gadget->name ? gadget->name : ""));
+
+ if (!ci->driver)
return 0;
- }
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "speed = %d\n",
- gadget->speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "max_speed = %d\n",
- gadget->max_speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_otg = %d\n",
- gadget->is_otg);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_a_peripheral = %d\n",
- gadget->is_a_peripheral);
- n += scnprintf(buf + n, PAGE_SIZE - n, "b_hnp_enable = %d\n",
- gadget->b_hnp_enable);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_hnp_support = %d\n",
- gadget->a_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_alt_hnp_support = %d\n",
- gadget->a_alt_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "name = %s\n",
- (gadget->name ? gadget->name : ""));
-
- return n;
-}
-static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
-
-/**
- * show_driver: prints information about attached gadget (if any)
- *
- * Check "device.h" for details
- */
-static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget_driver *driver = ci->driver;
- int n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- if (driver == NULL)
- return scnprintf(buf, PAGE_SIZE,
- "There is no gadget attached!\n");
- n += scnprintf(buf + n, PAGE_SIZE - n, "function = %s\n",
- (driver->function ? driver->function : ""));
- n += scnprintf(buf + n, PAGE_SIZE - n, "max speed = %d\n",
- driver->max_speed);
+ seq_printf(s, "gadget function = %s\n",
+ (ci->driver->function ? ci->driver->function : ""));
+ seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed);
- return n;
-}
-static DEVICE_ATTR(driver, S_IRUSR, show_driver, NULL);
-
-/* Maximum event message length */
-#define DBG_DATA_MSG 64UL
-
-/* Maximum event messages */
-#define DBG_DATA_MAX 128UL
-
-/* Event buffer descriptor */
-static struct {
- char (buf[DBG_DATA_MAX])[DBG_DATA_MSG]; /* buffer */
- unsigned idx; /* index */
- unsigned tty; /* print to console? */
- rwlock_t lck; /* lock */
-} dbg_data = {
- .idx = 0,
- .tty = 0,
- .lck = __RW_LOCK_UNLOCKED(dbg_data.lck)
-};
-
-/**
- * dbg_dec: decrements debug event index
- * @idx: buffer index
- */
-static void dbg_dec(unsigned *idx)
-{
- *idx = (*idx - 1) & (DBG_DATA_MAX-1);
-}
-
-/**
- * dbg_inc: increments debug event index
- * @idx: buffer index
- */
-static void dbg_inc(unsigned *idx)
-{
- *idx = (*idx + 1) & (DBG_DATA_MAX-1);
-}
-
-/**
- * dbg_print: prints the common part of the event
- * @addr: endpoint address
- * @name: event name
- * @status: status
- * @extra: extra information
- */
-static void dbg_print(u8 addr, const char *name, int status, const char *extra)
-{
- struct timeval tval;
- unsigned int stamp;
- unsigned long flags;
-
- write_lock_irqsave(&dbg_data.lck, flags);
-
- do_gettimeofday(&tval);
- stamp = tval.tv_sec & 0xFFFF; /* 2^32 = 4294967296. Limit to 4096s */
- stamp = stamp * 1000000 + tval.tv_usec;
-
- scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG,
- "%04X\t? %02X %-7.7s %4i ?\t%s\n",
- stamp, addr, name, status, extra);
-
- dbg_inc(&dbg_data.idx);
-
- write_unlock_irqrestore(&dbg_data.lck, flags);
-
- if (dbg_data.tty != 0)
- pr_notice("%04X\t? %02X %-7.7s %4i ?\t%s\n",
- stamp, addr, name, status, extra);
-}
-
-/**
- * dbg_done: prints a DONE event
- * @addr: endpoint address
- * @td: transfer descriptor
- * @status: status
- */
-void dbg_done(u8 addr, const u32 token, int status)
-{
- char msg[DBG_DATA_MSG];
-
- scnprintf(msg, sizeof(msg), "%d %02X",
- (int)(token & TD_TOTAL_BYTES) >> ffs_nr(TD_TOTAL_BYTES),
- (int)(token & TD_STATUS) >> ffs_nr(TD_STATUS));
- dbg_print(addr, "DONE", status, msg);
-}
-
-/**
- * dbg_event: prints a generic event
- * @addr: endpoint address
- * @name: event name
- * @status: status
- */
-void dbg_event(u8 addr, const char *name, int status)
-{
- if (name != NULL)
- dbg_print(addr, name, status, "");
-}
-
-/*
- * dbg_queue: prints a QUEUE event
- * @addr: endpoint address
- * @req: USB request
- * @status: status
- */
-void dbg_queue(u8 addr, const struct usb_request *req, int status)
-{
- char msg[DBG_DATA_MSG];
-
- if (req != NULL) {
- scnprintf(msg, sizeof(msg),
- "%d %d", !req->no_interrupt, req->length);
- dbg_print(addr, "QUEUE", status, msg);
- }
-}
-
-/**
- * dbg_setup: prints a SETUP event
- * @addr: endpoint address
- * @req: setup request
- */
-void dbg_setup(u8 addr, const struct usb_ctrlrequest *req)
-{
- char msg[DBG_DATA_MSG];
-
- if (req != NULL) {
- scnprintf(msg, sizeof(msg),
- "%02X %02X %04X %04X %d", req->bRequestType,
- req->bRequest, le16_to_cpu(req->wValue),
- le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength));
- dbg_print(addr, "SETUP", 0, msg);
- }
+ return 0;
}
-/**
- * show_events: displays the event buffer
- *
- * Check "device.h" for details
- */
-static ssize_t show_events(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_device_open(struct inode *inode, struct file *file)
{
- unsigned long flags;
- unsigned i, j, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev->parent, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- read_lock_irqsave(&dbg_data.lck, flags);
-
- i = dbg_data.idx;
- for (dbg_dec(&i); i != dbg_data.idx; dbg_dec(&i)) {
- n += strlen(dbg_data.buf[i]);
- if (n >= PAGE_SIZE) {
- n -= strlen(dbg_data.buf[i]);
- break;
- }
- }
- for (j = 0, dbg_inc(&i); j < n; dbg_inc(&i))
- j += scnprintf(buf + j, PAGE_SIZE - j,
- "%s", dbg_data.buf[i]);
-
- read_unlock_irqrestore(&dbg_data.lck, flags);
-
- return n;
+ return single_open(file, ci_device_show, inode->i_private);
}
-/**
- * store_events: configure if events are going to be also printed to console
- *
- * Check "device.h" for details
- */
-static ssize_t store_events(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned tty;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
-
- if (sscanf(buf, "%u", &tty) != 1 || tty > 1) {
- dev_err(dev, "<1|0>: enable|disable console log\n");
- goto done;
- }
-
- dbg_data.tty = tty;
- dev_info(dev, "tty = %u", dbg_data.tty);
-
- done:
- return count;
-}
-static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events);
+static const struct file_operations ci_device_fops = {
+ .open = ci_device_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_inters: interrupt status, enable status and historic
- *
- * Check "device.h" for details
+ * ci_port_test_show: reads port test mode
*/
-static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_port_test_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- u32 intr;
- unsigned i, j, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ unsigned mode;
spin_lock_irqsave(&ci->lock, flags);
-
- /*n += scnprintf(buf + n, PAGE_SIZE - n,
- "status = %08x\n", hw_read_intr_status(ci));
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "enable = %08x\n", hw_read_intr_enable(ci));*/
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
- isr_statistics.test);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? ui = %d\n",
- isr_statistics.ui);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? uei = %d\n",
- isr_statistics.uei);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? pci = %d\n",
- isr_statistics.pci);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? uri = %d\n",
- isr_statistics.uri);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? sli = %d\n",
- isr_statistics.sli);
- n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n",
- isr_statistics.none);
- n += scnprintf(buf + n, PAGE_SIZE - n, "*hndl = %d\n",
- isr_statistics.hndl.cnt);
-
- for (i = isr_statistics.hndl.idx, j = 0; j <= ISR_MASK; j++, i++) {
- i &= ISR_MASK;
- intr = isr_statistics.hndl.buf[i];
-
- if (USBi_UI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "ui ");
- intr &= ~USBi_UI;
- if (USBi_UEI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "uei ");
- intr &= ~USBi_UEI;
- if (USBi_PCI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "pci ");
- intr &= ~USBi_PCI;
- if (USBi_URI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "uri ");
- intr &= ~USBi_URI;
- if (USBi_SLI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "sli ");
- intr &= ~USBi_SLI;
- if (intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "??? ");
- if (isr_statistics.hndl.buf[i])
- n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
- }
-
+ mode = hw_port_test_get(ci);
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
-}
-
-/**
- * store_inters: enable & force or disable an individual interrutps
- * (to be used for test purposes only)
- *
- * Check "device.h" for details
- */
-static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- unsigned en, bit;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "EINVAL\n");
- goto done;
- }
+ seq_printf(s, "mode = %u\n", mode);
- if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
- dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n");
- goto done;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- if (en) {
- if (hw_intr_force(ci, bit))
- dev_err(dev, "invalid bit number\n");
- else
- isr_statistics.test++;
- } else {
- if (hw_intr_clear(ci, bit))
- dev_err(dev, "invalid bit number\n");
- }
- spin_unlock_irqrestore(&ci->lock, flags);
-
- done:
- return count;
+ return 0;
}
-static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters);
/**
- * show_port_test: reads port test mode
- *
- * Check "device.h" for details
+ * ci_port_test_write: writes port test mode
*/
-static ssize_t show_port_test(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct seq_file *s = file->private_data;
+ struct ci13xxx *ci = s->private;
unsigned long flags;
unsigned mode;
+ char buf[32];
+ int ret;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "EINVAL\n");
- return 0;
- }
+ if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (sscanf(buf, "%u", &mode) != 1)
+ return -EINVAL;
spin_lock_irqsave(&ci->lock, flags);
- mode = hw_port_test_get(ci);
+ ret = hw_port_test_set(ci, mode);
spin_unlock_irqrestore(&ci->lock, flags);
- return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
+ return ret ? ret : count;
}
-/**
- * store_port_test: writes port test mode
- *
- * Check "device.h" for details
- */
-static ssize_t store_port_test(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int ci_port_test_open(struct inode *inode, struct file *file)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- unsigned mode;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
-
- if (sscanf(buf, "%u", &mode) != 1) {
- dev_err(ci->dev, "<mode>: set port test mode");
- goto done;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- if (hw_port_test_set(ci, mode))
- dev_err(ci->dev, "invalid mode\n");
- spin_unlock_irqrestore(&ci->lock, flags);
-
- done:
- return count;
+ return single_open(file, ci_port_test_show, inode->i_private);
}
-static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
- show_port_test, store_port_test);
+
+static const struct file_operations ci_port_test_fops = {
+ .open = ci_port_test_open,
+ .write = ci_port_test_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_qheads: DMA contents of all queue heads
- *
- * Check "device.h" for details
+ * ci_qheads_show: DMA contents of all queue heads
*/
-static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_qheads_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- unsigned i, j, n = 0;
+ unsigned i, j;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
@@ -593,209 +129,173 @@ static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
struct ci13xxx_ep *mEpTx =
&ci->ci13xxx_ep[i + ci->hw_ep_max/2];
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: RX=%08X TX=%08X\n",
- i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
- for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X %08X\n", j,
- *((u32 *)mEpRx->qh.ptr + j),
- *((u32 *)mEpTx->qh.ptr + j));
- }
+ seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n",
+ i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
+ for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++)
+ seq_printf(s, " %04X: %08X %08X\n", j,
+ *((u32 *)mEpRx->qh.ptr + j),
+ *((u32 *)mEpTx->qh.ptr + j));
}
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
+}
+
+static int ci_qheads_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_qheads_show, inode->i_private);
}
-static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
+
+static const struct file_operations ci_qheads_fops = {
+ .open = ci_qheads_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_registers: dumps all registers
- *
- * Check "device.h" for details
+ * ci_requests_show: DMA contents of all requests currently queued (all endpts)
*/
-#define DUMP_ENTRIES 512
-static ssize_t show_registers(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int ci_requests_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- u32 *dump;
- unsigned i, k, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ struct list_head *ptr = NULL;
+ struct ci13xxx_req *req = NULL;
+ unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32);
- dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
- if (!dump) {
- dev_err(ci->dev, "%s: out of memory\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
spin_lock_irqsave(&ci->lock, flags);
- k = hw_register_read(ci, dump, DUMP_ENTRIES);
- spin_unlock_irqrestore(&ci->lock, flags);
+ for (i = 0; i < ci->hw_ep_max; i++)
+ list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) {
+ req = list_entry(ptr, struct ci13xxx_req, queue);
- for (i = 0; i < k; i++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "reg[0x%04X] = 0x%08X\n",
- i * (unsigned)sizeof(u32), dump[i]);
- }
- kfree(dump);
+ seq_printf(s, "EP=%02i: TD=%08X %s\n",
+ i % (ci->hw_ep_max / 2), (u32)req->dma,
+ ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
+
+ for (j = 0; j < qsize; j++)
+ seq_printf(s, " %04X: %08X\n", j,
+ *((u32 *)req->ptr + j));
+ }
+ spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
}
-/**
- * store_registers: writes value to register address
- *
- * Check "device.h" for details
- */
-static ssize_t store_registers(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int ci_requests_open(struct inode *inode, struct file *file)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long addr, data, flags;
+ return single_open(file, ci_requests_show, inode->i_private);
+}
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
+static const struct file_operations ci_requests_fops = {
+ .open = ci_requests_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
- if (sscanf(buf, "%li %li", &addr, &data) != 2) {
- dev_err(ci->dev,
- "<addr> <data>: write data to register address\n");
- goto done;
- }
+static int ci_role_show(struct seq_file *s, void *data)
+{
+ struct ci13xxx *ci = s->private;
- spin_lock_irqsave(&ci->lock, flags);
- if (hw_register_write(ci, addr, data))
- dev_err(ci->dev, "invalid address range\n");
- spin_unlock_irqrestore(&ci->lock, flags);
+ seq_printf(s, "%s\n", ci_role(ci)->name);
- done:
- return count;
+ return 0;
}
-static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
- show_registers, store_registers);
-/**
- * show_requests: DMA contents of all requests currently queued (all endpts)
- *
- * Check "device.h" for details
- */
-static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
- char *buf)
+static ssize_t ci_role_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- struct list_head *ptr = NULL;
- struct ci13xxx_req *req = NULL;
- unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ struct seq_file *s = file->private_data;
+ struct ci13xxx *ci = s->private;
+ enum ci_role role;
+ char buf[8];
+ int ret;
+
+ if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++)
+ if (ci->roles[role] &&
+ !strncmp(buf, ci->roles[role]->name,
+ strlen(ci->roles[role]->name)))
+ break;
- spin_lock_irqsave(&ci->lock, flags);
- for (i = 0; i < ci->hw_ep_max; i++)
- list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
- {
- req = list_entry(ptr, struct ci13xxx_req, queue);
+ if (role == CI_ROLE_END || role == ci->role)
+ return -EINVAL;
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: TD=%08X %s\n",
- i % ci->hw_ep_max/2, (u32)req->dma,
- ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
+ ci_role_stop(ci);
+ ret = ci_role_start(ci, role);
- for (j = 0; j < qSize; j++)
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X\n", j,
- *((u32 *)req->ptr + j));
- }
- spin_unlock_irqrestore(&ci->lock, flags);
+ return ret ? ret : count;
+}
- return n;
+static int ci_role_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_role_show, inode->i_private);
}
-static DEVICE_ATTR(requests, S_IRUSR, show_requests, NULL);
+
+static const struct file_operations ci_role_fops = {
+ .open = ci_role_open,
+ .write = ci_role_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
* dbg_create_files: initializes the attribute interface
- * @dev: device
+ * @ci: device
*
* This function returns an error code
*/
-int dbg_create_files(struct device *dev)
+int dbg_create_files(struct ci13xxx *ci)
{
- int retval = 0;
-
- if (dev == NULL)
- return -EINVAL;
- retval = device_create_file(dev, &dev_attr_device);
- if (retval)
- goto done;
- retval = device_create_file(dev, &dev_attr_driver);
- if (retval)
- goto rm_device;
- retval = device_create_file(dev, &dev_attr_events);
- if (retval)
- goto rm_driver;
- retval = device_create_file(dev, &dev_attr_inters);
- if (retval)
- goto rm_events;
- retval = device_create_file(dev, &dev_attr_port_test);
- if (retval)
- goto rm_inters;
- retval = device_create_file(dev, &dev_attr_qheads);
- if (retval)
- goto rm_port_test;
- retval = device_create_file(dev, &dev_attr_registers);
- if (retval)
- goto rm_qheads;
- retval = device_create_file(dev, &dev_attr_requests);
- if (retval)
- goto rm_registers;
- return 0;
-
- rm_registers:
- device_remove_file(dev, &dev_attr_registers);
- rm_qheads:
- device_remove_file(dev, &dev_attr_qheads);
- rm_port_test:
- device_remove_file(dev, &dev_attr_port_test);
- rm_inters:
- device_remove_file(dev, &dev_attr_inters);
- rm_events:
- device_remove_file(dev, &dev_attr_events);
- rm_driver:
- device_remove_file(dev, &dev_attr_driver);
- rm_device:
- device_remove_file(dev, &dev_attr_device);
- done:
- return retval;
+ struct dentry *dent;
+
+ ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL);
+ if (!ci->debugfs)
+ return -ENOMEM;
+
+ dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
+ &ci_device_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs,
+ ci, &ci_port_test_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
+ &ci_qheads_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
+ &ci_requests_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
+ &ci_role_fops);
+ if (dent)
+ return 0;
+err:
+ debugfs_remove_recursive(ci->debugfs);
+ return -ENOMEM;
}
/**
* dbg_remove_files: destroys the attribute interface
- * @dev: device
- *
- * This function returns an error code
+ * @ci: device
*/
-int dbg_remove_files(struct device *dev)
+void dbg_remove_files(struct ci13xxx *ci)
{
- if (dev == NULL)
- return -EINVAL;
- device_remove_file(dev, &dev_attr_requests);
- device_remove_file(dev, &dev_attr_registers);
- device_remove_file(dev, &dev_attr_qheads);
- device_remove_file(dev, &dev_attr_port_test);
- device_remove_file(dev, &dev_attr_inters);
- device_remove_file(dev, &dev_attr_events);
- device_remove_file(dev, &dev_attr_driver);
- device_remove_file(dev, &dev_attr_device);
- return 0;
+ debugfs_remove_recursive(ci->debugfs);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 20:28:02 +0000