usb: ohci: Add proper cache flushing / invalidating for non cache coherent cpus
Add proper cache flushing / invalidating for non cache coherent cpus, for now
only enable this for new (driver-model) usb code to avoid regressions.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 24f5e4e..f52b4c1 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -18,6 +18,18 @@
# define ohci_writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
#endif /* CONFIG_SYS_OHCI_SWAP_REG_ACCESS */
+#if defined CONFIG_DM_USB && ARCH_DMA_MINALIGN > 16
+#define ED_ALIGNMENT ARCH_DMA_MINALIGN
+#else
+#define ED_ALIGNMENT 16
+#endif
+
+#if defined CONFIG_DM_USB && ARCH_DMA_MINALIGN > 32
+#define TD_ALIGNMENT ARCH_DMA_MINALIGN
+#else
+#define TD_ALIGNMENT 32
+#endif
+
/* functions for doing board or CPU specific setup/cleanup */
int usb_board_stop(void);
@@ -52,7 +64,7 @@
struct usb_device *usb_dev;
void *purb;
__u32 unused[2];
-} __attribute__((aligned(16)));
+} __attribute__((aligned(ED_ALIGNMENT)));
typedef struct ed ed_t;
@@ -112,7 +124,7 @@
__u32 data;
__u32 unused2[2];
-} __attribute__((aligned(32)));
+} __attribute__((aligned(TD_ALIGNMENT)));
typedef struct td td_t;
#define OHCI_ED_SKIP (1 << 14)
@@ -356,8 +368,8 @@
#define NUM_TD 64 /* we need more TDs than EDs */
typedef struct ohci_device {
- ed_t ed[NUM_EDS] __aligned(16);
- td_t tds[NUM_TD] __aligned(32);
+ ed_t ed[NUM_EDS] __aligned(ED_ALIGNMENT);
+ td_t tds[NUM_TD] __aligned(TD_ALIGNMENT);
int ed_cnt;
} ohci_dev_t;
@@ -371,7 +383,7 @@
typedef struct ohci {
/* this allocates EDs for all possible endpoints */
- struct ohci_device ohci_dev __aligned(32);
+ struct ohci_device ohci_dev __aligned(TD_ALIGNMENT);
struct ohci_hcca *hcca; /* hcca */
/*dma_addr_t hcca_dma;*/