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path: root/drivers/usb/host/ehci-hcd.c
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Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
-rw-r--r--drivers/usb/host/ehci-hcd.c92
1 files changed, 50 insertions, 42 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 025d3331368..03d567e4d00 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -157,12 +157,13 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
* before driver shutdown. But it also seems to be caused by bugs in cardbus
* bridge shutdown: shutting down the bridge before the devices using it.
*/
-static int handshake (void __iomem *ptr, u32 mask, u32 done, int usec)
+static int handshake (struct ehci_hcd *ehci, void __iomem *ptr,
+ u32 mask, u32 done, int usec)
{
u32 result;
do {
- result = readl (ptr);
+ result = ehci_readl(ehci, ptr);
if (result == ~(u32)0) /* card removed */
return -ENODEV;
result &= mask;
@@ -177,18 +178,19 @@ static int handshake (void __iomem *ptr, u32 mask, u32 done, int usec)
/* force HC to halt state from unknown (EHCI spec section 2.3) */
static int ehci_halt (struct ehci_hcd *ehci)
{
- u32 temp = readl (&ehci->regs->status);
+ u32 temp = ehci_readl(ehci, &ehci->regs->status);
/* disable any irqs left enabled by previous code */
- writel (0, &ehci->regs->intr_enable);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
if ((temp & STS_HALT) != 0)
return 0;
- temp = readl (&ehci->regs->command);
+ temp = ehci_readl(ehci, &ehci->regs->command);
temp &= ~CMD_RUN;
- writel (temp, &ehci->regs->command);
- return handshake (&ehci->regs->status, STS_HALT, STS_HALT, 16 * 125);
+ ehci_writel(ehci, temp, &ehci->regs->command);
+ return handshake (ehci, &ehci->regs->status,
+ STS_HALT, STS_HALT, 16 * 125);
}
/* put TDI/ARC silicon into EHCI mode */
@@ -198,23 +200,24 @@ static void tdi_reset (struct ehci_hcd *ehci)
u32 tmp;
reg_ptr = (u32 __iomem *)(((u8 __iomem *)ehci->regs) + 0x68);
- tmp = readl (reg_ptr);
+ tmp = ehci_readl(ehci, reg_ptr);
tmp |= 0x3;
- writel (tmp, reg_ptr);
+ ehci_writel(ehci, tmp, reg_ptr);
}
/* reset a non-running (STS_HALT == 1) controller */
static int ehci_reset (struct ehci_hcd *ehci)
{
int retval;
- u32 command = readl (&ehci->regs->command);
+ u32 command = ehci_readl(ehci, &ehci->regs->command);
command |= CMD_RESET;
dbg_cmd (ehci, "reset", command);
- writel (command, &ehci->regs->command);
+ ehci_writel(ehci, command, &ehci->regs->command);
ehci_to_hcd(ehci)->state = HC_STATE_HALT;
ehci->next_statechange = jiffies;
- retval = handshake (&ehci->regs->command, CMD_RESET, 0, 250 * 1000);
+ retval = handshake (ehci, &ehci->regs->command,
+ CMD_RESET, 0, 250 * 1000);
if (retval)
return retval;
@@ -236,21 +239,21 @@ static void ehci_quiesce (struct ehci_hcd *ehci)
#endif
/* wait for any schedule enables/disables to take effect */
- temp = readl (&ehci->regs->command) << 10;
+ temp = ehci_readl(ehci, &ehci->regs->command) << 10;
temp &= STS_ASS | STS_PSS;
- if (handshake (&ehci->regs->status, STS_ASS | STS_PSS,
+ if (handshake (ehci, &ehci->regs->status, STS_ASS | STS_PSS,
temp, 16 * 125) != 0) {
ehci_to_hcd(ehci)->state = HC_STATE_HALT;
return;
}
/* then disable anything that's still active */
- temp = readl (&ehci->regs->command);
+ temp = ehci_readl(ehci, &ehci->regs->command);
temp &= ~(CMD_ASE | CMD_IAAD | CMD_PSE);
- writel (temp, &ehci->regs->command);
+ ehci_writel(ehci, temp, &ehci->regs->command);
/* hardware can take 16 microframes to turn off ... */
- if (handshake (&ehci->regs->status, STS_ASS | STS_PSS,
+ if (handshake (ehci, &ehci->regs->status, STS_ASS | STS_PSS,
0, 16 * 125) != 0) {
ehci_to_hcd(ehci)->state = HC_STATE_HALT;
return;
@@ -277,11 +280,11 @@ static void ehci_watchdog (unsigned long param)
/* lost IAA irqs wedge things badly; seen with a vt8235 */
if (ehci->reclaim) {
- u32 status = readl (&ehci->regs->status);
+ u32 status = ehci_readl(ehci, &ehci->regs->status);
if (status & STS_IAA) {
ehci_vdbg (ehci, "lost IAA\n");
COUNT (ehci->stats.lost_iaa);
- writel (STS_IAA, &ehci->regs->status);
+ ehci_writel(ehci, STS_IAA, &ehci->regs->status);
ehci->reclaim_ready = 1;
}
}
@@ -309,7 +312,7 @@ ehci_shutdown (struct usb_hcd *hcd)
(void) ehci_halt (ehci);
/* make BIOS/etc use companion controller during reboot */
- writel (0, &ehci->regs->configured_flag);
+ ehci_writel(ehci, 0, &ehci->regs->configured_flag);
}
static void ehci_port_power (struct ehci_hcd *ehci, int is_on)
@@ -379,11 +382,11 @@ static void ehci_stop (struct usb_hcd *hcd)
ehci_quiesce (ehci);
ehci_reset (ehci);
- writel (0, &ehci->regs->intr_enable);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
spin_unlock_irq(&ehci->lock);
/* let companion controllers work when we aren't */
- writel (0, &ehci->regs->configured_flag);
+ ehci_writel(ehci, 0, &ehci->regs->configured_flag);
remove_debug_files (ehci);
@@ -402,7 +405,8 @@ static void ehci_stop (struct usb_hcd *hcd)
ehci->stats.complete, ehci->stats.unlink);
#endif
- dbg_status (ehci, "ehci_stop completed", readl (&ehci->regs->status));
+ dbg_status (ehci, "ehci_stop completed",
+ ehci_readl(ehci, &ehci->regs->status));
}
/* one-time init, only for memory state */
@@ -428,7 +432,7 @@ static int ehci_init(struct usb_hcd *hcd)
return retval;
/* controllers may cache some of the periodic schedule ... */
- hcc_params = readl(&ehci->caps->hcc_params);
+ hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
if (HCC_ISOC_CACHE(hcc_params)) // full frame cache
ehci->i_thresh = 8;
else // N microframes cached
@@ -501,8 +505,8 @@ static int ehci_run (struct usb_hcd *hcd)
ehci_mem_cleanup(ehci);
return retval;
}
- writel(ehci->periodic_dma, &ehci->regs->frame_list);
- writel((u32)ehci->async->qh_dma, &ehci->regs->async_next);
+ ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
+ ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next);
/*
* hcc_params controls whether ehci->regs->segment must (!!!)
@@ -516,9 +520,9 @@ static int ehci_run (struct usb_hcd *hcd)
* Scsi_Host.highmem_io, and so forth. It's readonly to all
* host side drivers though.
*/
- hcc_params = readl(&ehci->caps->hcc_params);
+ hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params);
if (HCC_64BIT_ADDR(hcc_params)) {
- writel(0, &ehci->regs->segment);
+ ehci_writel(ehci, 0, &ehci->regs->segment);
#if 0
// this is deeply broken on almost all architectures
if (!dma_set_mask(hcd->self.controller, DMA_64BIT_MASK))
@@ -531,7 +535,7 @@ static int ehci_run (struct usb_hcd *hcd)
// root hub will detect new devices (why?); NEC doesn't
ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
ehci->command |= CMD_RUN;
- writel (ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
dbg_cmd (ehci, "init", ehci->command);
/*
@@ -541,17 +545,18 @@ static int ehci_run (struct usb_hcd *hcd)
* and there's no companion controller unless maybe for USB OTG.)
*/
hcd->state = HC_STATE_RUNNING;
- writel (FLAG_CF, &ehci->regs->configured_flag);
- readl (&ehci->regs->command); /* unblock posted writes */
+ ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
- temp = HC_VERSION(readl (&ehci->caps->hc_capbase));
+ temp = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
ehci_info (ehci,
"USB %x.%x started, EHCI %x.%02x, driver %s%s\n",
((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
temp >> 8, temp & 0xff, DRIVER_VERSION,
ignore_oc ? ", overcurrent ignored" : "");
- writel (INTR_MASK, &ehci->regs->intr_enable); /* Turn On Interrupts */
+ ehci_writel(ehci, INTR_MASK,
+ &ehci->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()
@@ -572,7 +577,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
spin_lock (&ehci->lock);
- status = readl (&ehci->regs->status);
+ status = ehci_readl(ehci, &ehci->regs->status);
/* e.g. cardbus physical eject */
if (status == ~(u32) 0) {
@@ -587,8 +592,8 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
}
/* clear (just) interrupts */
- writel (status, &ehci->regs->status);
- readl (&ehci->regs->command); /* unblock posted write */
+ ehci_writel(ehci, status, &ehci->regs->status);
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted write */
bh = 0;
#ifdef EHCI_VERBOSE_DEBUG
@@ -619,11 +624,12 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
unsigned i = HCS_N_PORTS (ehci->hcs_params);
/* resume root hub? */
- if (!(readl(&ehci->regs->command) & CMD_RUN))
+ if (!(ehci_readl(ehci, &ehci->regs->command) & CMD_RUN))
usb_hcd_resume_root_hub(hcd);
while (i--) {
- int pstatus = readl (&ehci->regs->port_status [i]);
+ int pstatus = ehci_readl(ehci,
+ &ehci->regs->port_status [i]);
if (pstatus & PORT_OWNER)
continue;
@@ -643,14 +649,15 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* PCI errors [4.15.2.4] */
if (unlikely ((status & STS_FATAL) != 0)) {
/* bogus "fatal" IRQs appear on some chips... why? */
- status = readl (&ehci->regs->status);
- dbg_cmd (ehci, "fatal", readl (&ehci->regs->command));
+ status = ehci_readl(ehci, &ehci->regs->status);
+ dbg_cmd (ehci, "fatal", ehci_readl(ehci,
+ &ehci->regs->command));
dbg_status (ehci, "fatal", status);
if (status & STS_HALT) {
ehci_err (ehci, "fatal error\n");
dead:
ehci_reset (ehci);
- writel (0, &ehci->regs->configured_flag);
+ ehci_writel(ehci, 0, &ehci->regs->configured_flag);
/* generic layer kills/unlinks all urbs, then
* uses ehci_stop to clean up the rest
*/
@@ -873,7 +880,8 @@ done:
static int ehci_get_frame (struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
- return (readl (&ehci->regs->frame_index) >> 3) % ehci->periodic_size;
+ return (ehci_readl(ehci, &ehci->regs->frame_index) >> 3) %
+ ehci->periodic_size;
}
/*-------------------------------------------------------------------------*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-10 22:28:02 +0000