usb: ehci: HBM require 64-byte aligned QH and qTD data structures
HBM block contains USB_OTG_HS_HBM_QH_MAP_PIPEn SW registers that map
BAM pipes to QHeads. However the USB_OTG_HS_HBM_QH_MAP_PIPEn registers
have only 31:6 valid bits, bits 5:0 are reserved, thus 64 bytes boundary
alignment is required.
CRs-Fixed: 395882
Change-Id: Ic921a95be3c2b6ded69b6f42afaa5dff3a25d5c8
Signed-off-by: Shimrit Malichi <smalichi@codeaurora.org>
diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c
index 12f70c3..c61591a 100644
--- a/drivers/usb/host/ehci-mem.c
+++ b/drivers/usb/host/ehci-mem.c
@@ -178,12 +178,15 @@
static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
{
int i;
+ size_t align;
+
+ align = ((ehci->pool_64_bit_align) ? 64 : 32);
/* QTDs for control/bulk/intr transfers */
ehci->qtd_pool = dma_pool_create ("ehci_qtd",
ehci_to_hcd(ehci)->self.controller,
sizeof (struct ehci_qtd),
- 32 /* byte alignment (for hw parts) */,
+ align /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
if (!ehci->qtd_pool) {
goto fail;
@@ -193,7 +196,7 @@
ehci->qh_pool = dma_pool_create ("ehci_qh",
ehci_to_hcd(ehci)->self.controller,
sizeof(struct ehci_qh_hw),
- 32 /* byte alignment (for hw parts) */,
+ align /* byte alignment (for hw parts) */,
4096 /* can't cross 4K */);
if (!ehci->qh_pool) {
goto fail;
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index d238b4e2..07a232a 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -30,6 +30,7 @@
hcd->has_tt = pdata->has_tt;
ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
+ ehci->pool_64_bit_align = pdata->pool_64_bit_align;
ehci->big_endian_desc = pdata->big_endian_desc;
ehci->big_endian_mmio = pdata->big_endian_mmio;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index f8b884a..cd17421 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -166,6 +166,7 @@
unsigned has_hostpc:1;
unsigned has_lpm:1; /* support link power management */
unsigned has_ppcd:1; /* support per-port change bits */
+ unsigned pool_64_bit_align:1; /* for 64 bit alignment */
u8 sbrn; /* packed release number */
/* irq statistics */