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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/kernel.h>#include <linux/slab.h>#include <linux/ptrace.h>#include <linux/types.h>#include <linux/spinlock.h>#include <linux/debugfs.h>#include <linux/seq_file.h>#include <linux/delay.h>#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include "core.h"#include "gadget.h"#include "io.h"#include "debug.h"
#define DWC3_LSP_MUX_UNSELECTED 0xfffff
#define dump_register(nm) \{ \ .name = __stringify(nm), \ .offset = DWC3_ ##nm, \}
#define dump_ep_register_set(n) \ { \ .name = "DEPCMDPAR2("__stringify(n)")", \ .offset = DWC3_DEPCMDPAR2(n), \ }, \ { \ .name = "DEPCMDPAR1("__stringify(n)")", \ .offset = DWC3_DEPCMDPAR1(n), \ }, \ { \ .name = "DEPCMDPAR0("__stringify(n)")", \ .offset = DWC3_DEPCMDPAR0(n), \ }, \ { \ .name = "DEPCMD("__stringify(n)")", \ .offset = DWC3_DEPCMD(n), \ }
static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GSBUSCFG0), dump_register(GSBUSCFG1), dump_register(GTXTHRCFG), dump_register(GRXTHRCFG), dump_register(GCTL), dump_register(GEVTEN), dump_register(GSTS), dump_register(GUCTL1), dump_register(GSNPSID), dump_register(GGPIO), dump_register(GUID), dump_register(GUCTL), dump_register(GBUSERRADDR0), dump_register(GBUSERRADDR1), dump_register(GPRTBIMAP0), dump_register(GPRTBIMAP1), dump_register(GHWPARAMS0), dump_register(GHWPARAMS1), dump_register(GHWPARAMS2), dump_register(GHWPARAMS3), dump_register(GHWPARAMS4), dump_register(GHWPARAMS5), dump_register(GHWPARAMS6), dump_register(GHWPARAMS7), dump_register(GDBGFIFOSPACE), dump_register(GDBGLTSSM), dump_register(GDBGBMU), dump_register(GPRTBIMAP_HS0), dump_register(GPRTBIMAP_HS1), dump_register(GPRTBIMAP_FS0), dump_register(GPRTBIMAP_FS1), dump_register(GUCTL2), dump_register(VER_NUMBER), dump_register(VER_TYPE),
dump_register(GUSB2PHYCFG(0)), dump_register(GUSB2PHYCFG(1)), dump_register(GUSB2PHYCFG(2)), dump_register(GUSB2PHYCFG(3)), dump_register(GUSB2PHYCFG(4)), dump_register(GUSB2PHYCFG(5)), dump_register(GUSB2PHYCFG(6)), dump_register(GUSB2PHYCFG(7)), dump_register(GUSB2PHYCFG(8)), dump_register(GUSB2PHYCFG(9)), dump_register(GUSB2PHYCFG(10)), dump_register(GUSB2PHYCFG(11)), dump_register(GUSB2PHYCFG(12)), dump_register(GUSB2PHYCFG(13)), dump_register(GUSB2PHYCFG(14)), dump_register(GUSB2PHYCFG(15)),
dump_register(GUSB2I2CCTL(0)), dump_register(GUSB2I2CCTL(1)), dump_register(GUSB2I2CCTL(2)), dump_register(GUSB2I2CCTL(3)), dump_register(GUSB2I2CCTL(4)), dump_register(GUSB2I2CCTL(5)), dump_register(GUSB2I2CCTL(6)), dump_register(GUSB2I2CCTL(7)), dump_register(GUSB2I2CCTL(8)), dump_register(GUSB2I2CCTL(9)), dump_register(GUSB2I2CCTL(10)), dump_register(GUSB2I2CCTL(11)), dump_register(GUSB2I2CCTL(12)), dump_register(GUSB2I2CCTL(13)), dump_register(GUSB2I2CCTL(14)), dump_register(GUSB2I2CCTL(15)),
dump_register(GUSB2PHYACC(0)), dump_register(GUSB2PHYACC(1)), dump_register(GUSB2PHYACC(2)), dump_register(GUSB2PHYACC(3)), dump_register(GUSB2PHYACC(4)), dump_register(GUSB2PHYACC(5)), dump_register(GUSB2PHYACC(6)), dump_register(GUSB2PHYACC(7)), dump_register(GUSB2PHYACC(8)), dump_register(GUSB2PHYACC(9)), dump_register(GUSB2PHYACC(10)), dump_register(GUSB2PHYACC(11)), dump_register(GUSB2PHYACC(12)), dump_register(GUSB2PHYACC(13)), dump_register(GUSB2PHYACC(14)), dump_register(GUSB2PHYACC(15)),
dump_register(GUSB3PIPECTL(0)), dump_register(GUSB3PIPECTL(1)), dump_register(GUSB3PIPECTL(2)), dump_register(GUSB3PIPECTL(3)), dump_register(GUSB3PIPECTL(4)), dump_register(GUSB3PIPECTL(5)), dump_register(GUSB3PIPECTL(6)), dump_register(GUSB3PIPECTL(7)), dump_register(GUSB3PIPECTL(8)), dump_register(GUSB3PIPECTL(9)), dump_register(GUSB3PIPECTL(10)), dump_register(GUSB3PIPECTL(11)), dump_register(GUSB3PIPECTL(12)), dump_register(GUSB3PIPECTL(13)), dump_register(GUSB3PIPECTL(14)), dump_register(GUSB3PIPECTL(15)),
dump_register(GTXFIFOSIZ(0)), dump_register(GTXFIFOSIZ(1)), dump_register(GTXFIFOSIZ(2)), dump_register(GTXFIFOSIZ(3)), dump_register(GTXFIFOSIZ(4)), dump_register(GTXFIFOSIZ(5)), dump_register(GTXFIFOSIZ(6)), dump_register(GTXFIFOSIZ(7)), dump_register(GTXFIFOSIZ(8)), dump_register(GTXFIFOSIZ(9)), dump_register(GTXFIFOSIZ(10)), dump_register(GTXFIFOSIZ(11)), dump_register(GTXFIFOSIZ(12)), dump_register(GTXFIFOSIZ(13)), dump_register(GTXFIFOSIZ(14)), dump_register(GTXFIFOSIZ(15)), dump_register(GTXFIFOSIZ(16)), dump_register(GTXFIFOSIZ(17)), dump_register(GTXFIFOSIZ(18)), dump_register(GTXFIFOSIZ(19)), dump_register(GTXFIFOSIZ(20)), dump_register(GTXFIFOSIZ(21)), dump_register(GTXFIFOSIZ(22)), dump_register(GTXFIFOSIZ(23)), dump_register(GTXFIFOSIZ(24)), dump_register(GTXFIFOSIZ(25)), dump_register(GTXFIFOSIZ(26)), dump_register(GTXFIFOSIZ(27)), dump_register(GTXFIFOSIZ(28)), dump_register(GTXFIFOSIZ(29)), dump_register(GTXFIFOSIZ(30)), dump_register(GTXFIFOSIZ(31)),
dump_register(GRXFIFOSIZ(0)), dump_register(GRXFIFOSIZ(1)), dump_register(GRXFIFOSIZ(2)), dump_register(GRXFIFOSIZ(3)), dump_register(GRXFIFOSIZ(4)), dump_register(GRXFIFOSIZ(5)), dump_register(GRXFIFOSIZ(6)), dump_register(GRXFIFOSIZ(7)), dump_register(GRXFIFOSIZ(8)), dump_register(GRXFIFOSIZ(9)), dump_register(GRXFIFOSIZ(10)), dump_register(GRXFIFOSIZ(11)), dump_register(GRXFIFOSIZ(12)), dump_register(GRXFIFOSIZ(13)), dump_register(GRXFIFOSIZ(14)), dump_register(GRXFIFOSIZ(15)), dump_register(GRXFIFOSIZ(16)), dump_register(GRXFIFOSIZ(17)), dump_register(GRXFIFOSIZ(18)), dump_register(GRXFIFOSIZ(19)), dump_register(GRXFIFOSIZ(20)), dump_register(GRXFIFOSIZ(21)), dump_register(GRXFIFOSIZ(22)), dump_register(GRXFIFOSIZ(23)), dump_register(GRXFIFOSIZ(24)), dump_register(GRXFIFOSIZ(25)), dump_register(GRXFIFOSIZ(26)), dump_register(GRXFIFOSIZ(27)), dump_register(GRXFIFOSIZ(28)), dump_register(GRXFIFOSIZ(29)), dump_register(GRXFIFOSIZ(30)), dump_register(GRXFIFOSIZ(31)),
dump_register(GEVNTADRLO(0)), dump_register(GEVNTADRHI(0)), dump_register(GEVNTSIZ(0)), dump_register(GEVNTCOUNT(0)),
dump_register(GHWPARAMS8), dump_register(GUCTL3), dump_register(GFLADJ), dump_register(DCFG), dump_register(DCTL), dump_register(DEVTEN), dump_register(DSTS), dump_register(DGCMDPAR), dump_register(DGCMD), dump_register(DALEPENA),
dump_ep_register_set(0), dump_ep_register_set(1), dump_ep_register_set(2), dump_ep_register_set(3), dump_ep_register_set(4), dump_ep_register_set(5), dump_ep_register_set(6), dump_ep_register_set(7), dump_ep_register_set(8), dump_ep_register_set(9), dump_ep_register_set(10), dump_ep_register_set(11), dump_ep_register_set(12), dump_ep_register_set(13), dump_ep_register_set(14), dump_ep_register_set(15), dump_ep_register_set(16), dump_ep_register_set(17), dump_ep_register_set(18), dump_ep_register_set(19), dump_ep_register_set(20), dump_ep_register_set(21), dump_ep_register_set(22), dump_ep_register_set(23), dump_ep_register_set(24), dump_ep_register_set(25), dump_ep_register_set(26), dump_ep_register_set(27), dump_ep_register_set(28), dump_ep_register_set(29), dump_ep_register_set(30), dump_ep_register_set(31),
dump_register(OCFG), dump_register(OCTL), dump_register(OEVT), dump_register(OEVTEN), dump_register(OSTS),};
static void dwc3_host_lsp(struct seq_file *s){ struct dwc3 *dwc = s->private; bool dbc_enabled; u32 sel; u32 reg; u32 val;
dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC);
sel = dwc->dbg_lsp_select; if (sel == DWC3_LSP_MUX_UNSELECTED) { seq_puts(s, "Write LSP selection to print for host\n"); return; }
reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel);
dwc3_writel(dwc, DWC3_GDBGLSPMUX, reg); val = dwc3_readl(dwc, DWC3_GDBGLSP); seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val);
if (dbc_enabled && sel < 256) { reg |= DWC3_GDBGLSPMUX_ENDBC; dwc3_writel(dwc, DWC3_GDBGLSPMUX, reg); val = dwc3_readl(dwc, DWC3_GDBGLSP); seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val); }}
static void dwc3_gadget_lsp(struct seq_file *s){ struct dwc3 *dwc = s->private; int i; u32 reg;
for (i = 0; i < 16; i++) { reg = DWC3_GDBGLSPMUX_DEVSELECT(i); dwc3_writel(dwc, DWC3_GDBGLSPMUX, reg); reg = dwc3_readl(dwc, DWC3_GDBGLSP); seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg); }}
static int dwc3_lsp_show(struct seq_file *s, void *unused){ struct dwc3 *dwc = s->private; unsigned int current_mode; unsigned long flags; u32 reg; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc, DWC3_GSTS); current_mode = DWC3_GSTS_CURMOD(reg);
switch (current_mode) { case DWC3_GSTS_CURMOD_HOST: dwc3_host_lsp(s); break; case DWC3_GSTS_CURMOD_DEVICE: dwc3_gadget_lsp(s); break; default: seq_puts(s, "Mode is unknown, no LSP register printed\n"); break; } spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_lsp_open(struct inode *inode, struct file *file){ return single_open(file, dwc3_lsp_show, inode->i_private);}
static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos){ struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; unsigned long flags; char buf[32] = { 0 }; u32 sel; int ret;
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT;
ret = kstrtouint(buf, 0, &sel); if (ret) return ret;
spin_lock_irqsave(&dwc->lock, flags); dwc->dbg_lsp_select = sel; spin_unlock_irqrestore(&dwc->lock, flags);
return count;}
static const struct file_operations dwc3_lsp_fops = { .open = dwc3_lsp_open, .write = dwc3_lsp_write, .read = seq_read, .llseek = seq_lseek, .release = single_release,};
static int dwc3_mode_show(struct seq_file *s, void *unused){ struct dwc3 *dwc = s->private; unsigned long flags; u32 reg; u32 mode; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc, DWC3_GCTL); spin_unlock_irqrestore(&dwc->lock, flags);
mode = DWC3_GCTL_PRTCAP(reg); switch (mode) { case DWC3_GCTL_PRTCAP_HOST: case DWC3_GCTL_PRTCAP_DEVICE: case DWC3_GCTL_PRTCAP_OTG: seq_printf(s, "%s\n", dwc3_mode_string(mode)); break; default: seq_printf(s, "UNKNOWN %08x\n", mode); }
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_mode_open(struct inode *inode, struct file *file){ return single_open(file, dwc3_mode_show, inode->i_private);}
static ssize_t dwc3_mode_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos){ struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; u32 mode = 0; char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT;
if (dwc->dr_mode != USB_DR_MODE_OTG) return count;
if (!strncmp(buf, "host", 4)) mode = DWC3_GCTL_PRTCAP_HOST;
if (!strncmp(buf, "device", 6)) mode = DWC3_GCTL_PRTCAP_DEVICE;
if (!strncmp(buf, "otg", 3)) mode = DWC3_GCTL_PRTCAP_OTG;
dwc3_set_mode(dwc, mode);
return count;}
static const struct file_operations dwc3_mode_fops = { .open = dwc3_mode_open, .write = dwc3_mode_write, .read = seq_read, .llseek = seq_lseek, .release = single_release,};
static int dwc3_testmode_show(struct seq_file *s, void *unused){ struct dwc3 *dwc = s->private; unsigned long flags; u32 reg; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc, DWC3_DCTL); reg &= DWC3_DCTL_TSTCTRL_MASK; reg >>= 1; spin_unlock_irqrestore(&dwc->lock, flags);
switch (reg) { case 0: seq_puts(s, "no test\n"); break; case USB_TEST_J: seq_puts(s, "test_j\n"); break; case USB_TEST_K: seq_puts(s, "test_k\n"); break; case USB_TEST_SE0_NAK: seq_puts(s, "test_se0_nak\n"); break; case USB_TEST_PACKET: seq_puts(s, "test_packet\n"); break; case USB_TEST_FORCE_ENABLE: seq_puts(s, "test_force_enable\n"); break; default: seq_printf(s, "UNKNOWN %d\n", reg); }
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_testmode_open(struct inode *inode, struct file *file){ return single_open(file, dwc3_testmode_show, inode->i_private);}
static ssize_t dwc3_testmode_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos){ struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; unsigned long flags; u32 testmode = 0; char buf[32]; int ret;
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT;
if (!strncmp(buf, "test_j", 6)) testmode = USB_TEST_J; else if (!strncmp(buf, "test_k", 6)) testmode = USB_TEST_K; else if (!strncmp(buf, "test_se0_nak", 12)) testmode = USB_TEST_SE0_NAK; else if (!strncmp(buf, "test_packet", 11)) testmode = USB_TEST_PACKET; else if (!strncmp(buf, "test_force_enable", 17)) testmode = USB_TEST_FORCE_ENABLE; else testmode = 0;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_set_test_mode(dwc, testmode); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return count;}
static const struct file_operations dwc3_testmode_fops = { .open = dwc3_testmode_open, .write = dwc3_testmode_write, .read = seq_read, .llseek = seq_lseek, .release = single_release,};
static int dwc3_link_state_show(struct seq_file *s, void *unused){ struct dwc3 *dwc = s->private; unsigned long flags; enum dwc3_link_state state; u32 reg; u8 speed; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc, DWC3_GSTS); if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { seq_puts(s, "Not available\n"); spin_unlock_irqrestore(&dwc->lock, flags); pm_runtime_put_sync(dwc->dev); return 0; }
reg = dwc3_readl(dwc, DWC3_DSTS); state = DWC3_DSTS_USBLNKST(reg); speed = reg & DWC3_DSTS_CONNECTSPD;
seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ? dwc3_gadget_link_string(state) : dwc3_gadget_hs_link_string(state)); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_link_state_open(struct inode *inode, struct file *file){ return single_open(file, dwc3_link_state_show, inode->i_private);}
static ssize_t dwc3_link_state_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos){ struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; unsigned long flags; enum dwc3_link_state state = 0; char buf[32]; u32 reg; u8 speed; int ret;
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT;
if (!strncmp(buf, "SS.Disabled", 11)) state = DWC3_LINK_STATE_SS_DIS; else if (!strncmp(buf, "Rx.Detect", 9)) state = DWC3_LINK_STATE_RX_DET; else if (!strncmp(buf, "SS.Inactive", 11)) state = DWC3_LINK_STATE_SS_INACT; else if (!strncmp(buf, "Recovery", 8)) state = DWC3_LINK_STATE_RECOV; else if (!strncmp(buf, "Compliance", 10)) state = DWC3_LINK_STATE_CMPLY; else if (!strncmp(buf, "Loopback", 8)) state = DWC3_LINK_STATE_LPBK; else return -EINVAL;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc, DWC3_GSTS); if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { spin_unlock_irqrestore(&dwc->lock, flags); pm_runtime_put_sync(dwc->dev); return -EINVAL; }
reg = dwc3_readl(dwc, DWC3_DSTS); speed = reg & DWC3_DSTS_CONNECTSPD;
if (speed < DWC3_DSTS_SUPERSPEED && state != DWC3_LINK_STATE_RECOV) { spin_unlock_irqrestore(&dwc->lock, flags); pm_runtime_put_sync(dwc->dev); return -EINVAL; }
dwc3_gadget_set_link_state(dwc, state); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return count;}
static const struct file_operations dwc3_link_state_fops = { .open = dwc3_link_state_open, .write = dwc3_link_state_write, .read = seq_read, .llseek = seq_lseek, .release = single_release,};
struct dwc3_ep_file_map { const char name[25]; const struct file_operations *const fops;};
static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 mdwidth; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_TXFIFO);
/* Convert to bytes */ mdwidth = dwc3_mdwidth(dwc);
val *= mdwidth; val >>= 3; seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 mdwidth; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXFIFO);
/* Convert to bytes */ mdwidth = dwc3_mdwidth(dwc);
val *= mdwidth; val >>= 3; seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_TXREQQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXREQQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_event_queue_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_EVENTQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_transfer_type_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags;
spin_lock_irqsave(&dwc->lock, flags); if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) { seq_puts(s, "--\n"); goto out; }
switch (usb_endpoint_type(dep->endpoint.desc)) { case USB_ENDPOINT_XFER_CONTROL: seq_puts(s, "control\n"); break; case USB_ENDPOINT_XFER_ISOC: seq_puts(s, "isochronous\n"); break; case USB_ENDPOINT_XFER_BULK: seq_puts(s, "bulk\n"); break; case USB_ENDPOINT_XFER_INT: seq_puts(s, "interrupt\n"); break; default: seq_puts(s, "--\n"); }
out: spin_unlock_irqrestore(&dwc->lock, flags);
return 0;}
static int dwc3_trb_ring_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; int i; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); if (dep->number <= 1) { seq_puts(s, "--\n"); goto out; }
seq_puts(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
for (i = 0; i < DWC3_TRB_NUM; i++) { struct dwc3_trb *trb = &dep->trb_pool[i]; unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n", trb->bph, trb->bpl, trb->size, dwc3_trb_type_string(type), !!(trb->ctrl & DWC3_TRB_CTRL_IOC), !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI), !!(trb->ctrl & DWC3_TRB_CTRL_CSP), !!(trb->ctrl & DWC3_TRB_CTRL_CHN), !!(trb->ctrl & DWC3_TRB_CTRL_LST), !!(trb->ctrl & DWC3_TRB_CTRL_HWO), dep->trb_enqueue == i ? 'E' : ' ', dep->trb_dequeue == i ? 'D' : ' '); }
out: spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
static int dwc3_ep_info_register_show(struct seq_file *s, void *unused){ struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u64 ep_info; u32 lower_32_bits; u32 upper_32_bits; u32 reg; int ret;
ret = pm_runtime_resume_and_get(dwc->dev); if (ret < 0) return ret;
spin_lock_irqsave(&dwc->lock, flags); reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number); dwc3_writel(dwc, DWC3_GDBGLSPMUX, reg);
lower_32_bits = dwc3_readl(dwc, DWC3_GDBGEPINFO0); upper_32_bits = dwc3_readl(dwc, DWC3_GDBGEPINFO1);
ep_info = ((u64)upper_32_bits << 32) | lower_32_bits; seq_printf(s, "0x%016llx\n", ep_info); spin_unlock_irqrestore(&dwc->lock, flags);
pm_runtime_put_sync(dwc->dev);
return 0;}
DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size);DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size);DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue);DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue);DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue);DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue);DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue);DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type);DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring);DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register);
static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { { "tx_fifo_size", &dwc3_tx_fifo_size_fops, }, { "rx_fifo_size", &dwc3_rx_fifo_size_fops, }, { "tx_request_queue", &dwc3_tx_request_queue_fops, }, { "rx_request_queue", &dwc3_rx_request_queue_fops, }, { "rx_info_queue", &dwc3_rx_info_queue_fops, }, { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, }, { "event_queue", &dwc3_event_queue_fops, }, { "transfer_type", &dwc3_transfer_type_fops, }, { "trb_ring", &dwc3_trb_ring_fops, }, { "GDBGEPINFO", &dwc3_ep_info_register_fops, },};
void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep){ struct dentry *dir; int i;
dir = debugfs_create_dir(dep->name, dep->dwc->debug_root); for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) { const struct file_operations *fops = dwc3_ep_file_map[i].fops; const char *name = dwc3_ep_file_map[i].name;
debugfs_create_file(name, 0444, dir, dep, fops); }}
void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep){ debugfs_lookup_and_remove(dep->name, dep->dwc->debug_root);}
void dwc3_debugfs_init(struct dwc3 *dwc){ struct dentry *root;
dwc->regset = kzalloc_obj(*dwc->regset); if (!dwc->regset) return;
dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED;
dwc->regset->regs = dwc3_regs; dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; dwc->regset->dev = dwc->dev;
root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root); dwc->debug_root = root; debugfs_create_regset32("regdump", 0444, root, dwc->regset); debugfs_create_file("lsp_dump", 0644, root, dwc, &dwc3_lsp_fops);
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) debugfs_create_file("mode", 0644, root, dwc, &dwc3_mode_fops);
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { debugfs_create_file("testmode", 0644, root, dwc, &dwc3_testmode_fops); debugfs_create_file("link_state", 0644, root, dwc, &dwc3_link_state_fops); }}
void dwc3_debugfs_exit(struct dwc3 *dwc){ debugfs_lookup_and_remove(dev_name(dwc->dev), usb_debug_root); kfree(dwc->regset);}