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USB: xhci: Print NEC firmware version. 

The NEC xHCI host controller firmware version can be found by putting a
vendor-specific command on the command ring and extracting the BCD
encoded-version out of the vendor-specific event TRB.

The firmware version debug line in dmesg will look like:

xhci_hcd 0000:05:00.0: NEC firmware version 30.21

(NEC merged with Renesas Technologies and became Renesas Electronics on
April 1, 2010.  I have their OK to merge this vendor-specific code.)

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Satoshi Otani <satoshi.otani.xm@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Sarah Sharp 2010-05-24 13:25:28 -07:00 committed by Greg Kroah-Hartman
parent ed07453fd3
commit 0238634d02
4 changed files with 49 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/host/xhci-pci.c
View File

@ -78,6 +78,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure"
" endpoint cmd after reset endpoint\n");
}
if (pdev->vendor == PCI_VENDOR_ID_NEC)
xhci->quirks |= XHCI_NEC_HOST;
/* Make sure the HC is halted. */
retval = xhci_halt(xhci);

31
drivers/usb/host/xhci-ring.c
View File

@ -1071,6 +1071,15 @@ bandwidth_change:
xhci_warn(xhci, "Reset device command completion "
"for disabled slot %u\n", slot_id);
break;
case TRB_TYPE(TRB_NEC_GET_FW):
if (!(xhci->quirks & XHCI_NEC_HOST)) {
xhci->error_bitmask |= 1 << 6;
break;
}
xhci_dbg(xhci, "NEC firmware version %2x.%02x\n",
NEC_FW_MAJOR(event->status),
NEC_FW_MINOR(event->status));
break;
default:
/* Skip over unknown commands on the event ring */
xhci->error_bitmask |= 1 << 6;
@ -1079,6 +1088,17 @@ bandwidth_change:
inc_deq(xhci, xhci->cmd_ring, false);
}
static void handle_vendor_event(struct xhci_hcd *xhci,
union xhci_trb *event)
{
u32 trb_type;
trb_type = TRB_FIELD_TO_TYPE(event->generic.field[3]);
xhci_dbg(xhci, "Vendor specific event TRB type = %u\n", trb_type);
if (trb_type == TRB_NEC_CMD_COMP && (xhci->quirks & XHCI_NEC_HOST))
handle_cmd_completion(xhci, &event->event_cmd);
}
static void handle_port_status(struct xhci_hcd *xhci,
union xhci_trb *event)
{
@ -1659,7 +1679,10 @@ void xhci_handle_event(struct xhci_hcd *xhci)
update_ptrs = 0;
break;
default:
xhci->error_bitmask |= 1 << 3;
if ((event->event_cmd.flags & TRB_TYPE_BITMASK) >= TRB_TYPE(48))
handle_vendor_event(xhci, event);
else
xhci->error_bitmask |= 1 << 3;
}
/* Any of the above functions may drop and re-acquire the lock, so check
* to make sure a watchdog timer didn't mark the host as non-responsive.
@ -2378,6 +2401,12 @@ int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
false);
}
int xhci_queue_vendor_command(struct xhci_hcd *xhci,
u32 field1, u32 field2, u32 field3, u32 field4)
{
return queue_command(xhci, field1, field2, field3, field4, false);
}
/* Queue a reset device command TRB */
int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id)
{

5
drivers/usb/host/xhci.c
View File

@ -486,6 +486,9 @@ int xhci_run(struct usb_hcd *hcd)
if (NUM_TEST_NOOPS > 0)
doorbell = xhci_setup_one_noop(xhci);
if (xhci->quirks & XHCI_NEC_HOST)
xhci_queue_vendor_command(xhci, 0, 0, 0,
TRB_TYPE(TRB_NEC_GET_FW));
if (xhci_start(xhci)) {
xhci_halt(xhci);
@ -495,6 +498,8 @@ int xhci_run(struct usb_hcd *hcd)
xhci_dbg(xhci, "// @%p = 0x%x\n", &xhci->op_regs->command, temp);
if (doorbell)
(*doorbell)(xhci);
if (xhci->quirks & XHCI_NEC_HOST)
xhci_ring_cmd_db(xhci);
xhci_dbg(xhci, "Finished xhci_run\n");
return 0;

12
drivers/usb/host/xhci.h
View File

@ -925,6 +925,7 @@ union xhci_trb {
/* TRB bit mask */
#define TRB_TYPE_BITMASK (0xfc00)
#define TRB_TYPE(p) ((p) << 10)
#define TRB_FIELD_TO_TYPE(p) (((p) & TRB_TYPE_BITMASK) >> 10)
/* TRB type IDs */
/* bulk, interrupt, isoc scatter/gather, and control data stage */
#define TRB_NORMAL 1
@ -992,6 +993,14 @@ union xhci_trb {
#define TRB_MFINDEX_WRAP 39
/* TRB IDs 40-47 reserved, 48-63 is vendor-defined */
/* Nec vendor-specific command completion event. */
#define TRB_NEC_CMD_COMP 48
/* Get NEC firmware revision. */
#define TRB_NEC_GET_FW 49
#define NEC_FW_MINOR(p) (((p) >> 0) & 0xff)
#define NEC_FW_MAJOR(p) (((p) >> 8) & 0xff)
/*
* TRBS_PER_SEGMENT must be a multiple of 4,
* since the command ring is 64-byte aligned.
@ -1172,6 +1181,7 @@ struct xhci_hcd {
unsigned int quirks;
#define XHCI_LINK_TRB_QUIRK (1 << 0)
#define XHCI_RESET_EP_QUIRK (1 << 1)
#define XHCI_NEC_HOST (1 << 2)
};
/* For testing purposes */
@ -1379,6 +1389,8 @@ void xhci_set_hc_event_deq(struct xhci_hcd *xhci);
int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id);
int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
u32 slot_id);
int xhci_queue_vendor_command(struct xhci_hcd *xhci,
u32 field1, u32 field2, u32 field3, u32 field4);
int xhci_queue_stop_endpoint(struct xhci_hcd *xhci, int slot_id,
unsigned int ep_index);
int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,