xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

USB: Implement support for EHCI with big endian MMIO

Browse Source 
This patch implements supports for EHCI controllers whose MMIO
registers are big endian and enables that functionality for
the Toshiba SCC chip. It does _not_ add support for big endian
in-memory data structures as this is not needed for that chip
and I hope it will never be.

The guts of the patch are to convert readl(...) to
ehci_readl(ehci, ...) and similarly for register writes.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Benjamin Herrenschmidt
2006-12-15 06:54:08 +11:00
committed by Greg Kroah-Hartman
parent 11d1a4aa8d
commit 083522d766
9 changed files with 213 additions and 142 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/usb/host/ehci-dbg.c
View File

@@ -43,7 +43,7 @@
*/
static void dbg_hcs_params (struct ehci_hcd *ehci, char *label)
{
u32 params = readl (&ehci->caps->hcs_params);
u32 params = ehci_readl(ehci, &ehci->caps->hcs_params);
ehci_dbg (ehci,
"%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n",
@@ -87,7 +87,7 @@ static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {}
* */
static void dbg_hcc_params (struct ehci_hcd *ehci, char *label)
{
u32 params = readl (&ehci->caps->hcc_params);
u32 params = ehci_readl(ehci, &ehci->caps->hcc_params);
if (HCC_ISOC_CACHE (params)) {
ehci_dbg (ehci,
@@ -653,7 +653,7 @@ show_registers (struct class_device *class_dev, char *buf)
}
/* Capability Registers */
i = HC_VERSION(readl (&ehci->caps->hc_capbase));
i = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
temp = scnprintf (next, size,
"bus %s, device %s (driver " DRIVER_VERSION ")\n"
"%s\n"
@@ -673,7 +673,7 @@ show_registers (struct class_device *class_dev, char *buf)
unsigned count = 256/4;
pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
offset = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params));
offset = HCC_EXT_CAPS (ehci_readl(ehci, &ehci->caps->hcc_params));
while (offset && count--) {
pci_read_config_dword (pdev, offset, &cap);
switch (cap & 0xff) {
@@ -704,50 +704,50 @@ show_registers (struct class_device *class_dev, char *buf)
#endif
// FIXME interpret both types of params
i = readl (&ehci->caps->hcs_params);
i = ehci_readl(ehci, &ehci->caps->hcs_params);
temp = scnprintf (next, size, "structural params 0x%08x\n", i);
size -= temp;
next += temp;
i = readl (&ehci->caps->hcc_params);
i = ehci_readl(ehci, &ehci->caps->hcc_params);
temp = scnprintf (next, size, "capability params 0x%08x\n", i);
size -= temp;
next += temp;
/* Operational Registers */
temp = dbg_status_buf (scratch, sizeof scratch, label,
readl (&ehci->regs->status));
ehci_readl(ehci, &ehci->regs->status));
temp = scnprintf (next, size, fmt, temp, scratch);
size -= temp;
next += temp;
temp = dbg_command_buf (scratch, sizeof scratch, label,
readl (&ehci->regs->command));
ehci_readl(ehci, &ehci->regs->command));
temp = scnprintf (next, size, fmt, temp, scratch);
size -= temp;
next += temp;
temp = dbg_intr_buf (scratch, sizeof scratch, label,
readl (&ehci->regs->intr_enable));
ehci_readl(ehci, &ehci->regs->intr_enable));
temp = scnprintf (next, size, fmt, temp, scratch);
size -= temp;
next += temp;
temp = scnprintf (next, size, "uframe %04x\n",
readl (&ehci->regs->frame_index));
ehci_readl(ehci, &ehci->regs->frame_index));
size -= temp;
next += temp;
for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) {
temp = dbg_port_buf (scratch, sizeof scratch, label, i,
readl (&ehci->regs->port_status [i - 1]));
ehci_readl(ehci, &ehci->regs->port_status [i - 1]));
temp = scnprintf (next, size, fmt, temp, scratch);
size -= temp;
next += temp;
if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) {
temp = scnprintf (next, size,
" debug control %08x\n",
readl (&ehci->debug->control));
ehci_readl(ehci, &ehci->debug->control));
size -= temp;
next += temp;
}