Commit 0f114671 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman

USB SL811HS host controller driver.

Added the driver to the 2.5 tree.  The original code for 2.4 was
written by Pei Liu <pbl@cypress.com> but cleaned up a bit and 
ported to 2.5 by me.  Any problems in the driver is probably due to
my messing with it.

This driver is for the SL811HS USB host controller chip from
Cypress and is typically contained on a ARM based embedded
system.
parent 96b37d50
......@@ -12,6 +12,7 @@ subdir-$(CONFIG_USB) += core
subdir-$(CONFIG_USB_EHCI_HCD) += host
subdir-$(CONFIG_USB_OHCI_HCD) += host
subdir-$(CONFIG_USB_OHCI) += host
subdir-$(CONFIG_USB_SL811HS) += host
subdir-$(CONFIG_USB_UHCI_ALT) += host
subdir-$(CONFIG_USB_UHCI_HCD_ALT) += host
subdir-$(CONFIG_USB_UHCI_HCD) += host
......
......@@ -89,3 +89,13 @@ CONFIG_USB_OHCI
inserted in and removed from the running kernel whenever you want).
The module will be called usb-ohci.o. If you want to compile it
as a module, say M here and read <file:Documentation/modules.txt>.
CONFIG_USB_SL811HS
Say Y here if you have a SL811HS USB host controller in your system.
If you do not know what this is, please say N.
This code is also available as a module ( = code which can be
inserted in and removed from the running kernel whenever you want).
The module will be called hc_sl811.o. If you want to compile it
as a module, say M here and read <file:Documentation/modules.txt>.
......@@ -19,3 +19,6 @@ fi
# define_bool CONFIG_USB_UHCI_ALT n
#fi
#dep_tristate ' OHCI (Compaq, iMacs, OPTi, SiS, ALi, ...) support' CONFIG_USB_OHCI $CONFIG_USB
if [ "$CONFIG_ARM" = "y" ]; then
dep_tristate ' SL811HS support' CONFIG_USB_SL811HS $CONFIG_USB
fi
......@@ -13,5 +13,6 @@ obj-$(CONFIG_USB_UHCI_HCD_ALT) += uhci-hcd.o
obj-$(CONFIG_USB_UHCI) += usb-uhci.o
obj-$(CONFIG_USB_UHCI_ALT) += uhci.o
obj-$(CONFIG_USB_OHCI) += usb-ohci.o
obj-$(CONFIG_USB_SL811HS) += hc_sl811.o
include $(TOPDIR)/Rules.make
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/*-------------------------------------------------------------------------*/
/* list of all controllers using this driver
* */
static LIST_HEAD (hci_hcd_list);
/* URB states (urb_state) */
/* isoc, interrupt single state */
/* bulk transfer main state and 0-length packet */
#define US_BULK 0
#define US_BULK0 1
/* three setup states */
#define US_CTRL_SETUP 2
#define US_CTRL_DATA 1
#define US_CTRL_ACK 0
/*-------------------------------------------------------------------------*/
/* HC private part of a device descriptor
* */
#define NUM_EDS 32
typedef struct epd {
struct urb *pipe_head;
struct list_head urb_queue;
// int urb_state;
struct timer_list timeout;
int last_iso; /* timestamp of last queued ISOC transfer */
} epd_t;
struct hci_device {
epd_t ed[NUM_EDS];
};
/*-------------------------------------------------------------------------*/
/* Virtual Root HUB
*/
#define usb_to_hci(usb) ((struct hci_device *)(usb)->hcpriv)
struct virt_root_hub {
int devnum; /* Address of Root Hub endpoint */
void *urb; /* interrupt URB of root hub */
int send; /* active flag */
int interval; /* intervall of roothub interrupt transfers */
struct timer_list rh_int_timer; /* intervall timer for rh interrupt EP */
};
#if 1
/* USB HUB CONSTANTS (not OHCI-specific; see hub.h and USB spec) */
/* destination of request */
#define RH_INTERFACE 0x01
#define RH_ENDPOINT 0x02
#define RH_OTHER 0x03
#define RH_CLASS 0x20
#define RH_VENDOR 0x40
/* Requests: bRequest << 8 | bmRequestType */
#define RH_GET_STATUS 0x0080
#define RH_CLEAR_FEATURE 0x0100
#define RH_SET_FEATURE 0x0300
#define RH_SET_ADDRESS 0x0500
#define RH_GET_DESCRIPTOR 0x0680
#define RH_SET_DESCRIPTOR 0x0700
#define RH_GET_CONFIGURATION 0x0880
#define RH_SET_CONFIGURATION 0x0900
#define RH_GET_STATE 0x0280
#define RH_GET_INTERFACE 0x0A80
#define RH_SET_INTERFACE 0x0B00
#define RH_SYNC_FRAME 0x0C80
/* Our Vendor Specific Request */
#define RH_SET_EP 0x2000
/* Hub port features */
#define RH_PORT_CONNECTION 0x00
#define RH_PORT_ENABLE 0x01
#define RH_PORT_SUSPEND 0x02
#define RH_PORT_OVER_CURRENT 0x03
#define RH_PORT_RESET 0x04
#define RH_PORT_POWER 0x08
#define RH_PORT_LOW_SPEED 0x09
#define RH_C_PORT_CONNECTION 0x10
#define RH_C_PORT_ENABLE 0x11
#define RH_C_PORT_SUSPEND 0x12
#define RH_C_PORT_OVER_CURRENT 0x13
#define RH_C_PORT_RESET 0x14
/* Hub features */
#define RH_C_HUB_LOCAL_POWER 0x00
#define RH_C_HUB_OVER_CURRENT 0x01
#define RH_DEVICE_REMOTE_WAKEUP 0x00
#define RH_ENDPOINT_STALL 0x01
#endif
/*-------------------------------------------------------------------------*/
/* struct for each HC
*/
#define MAX_TRANS 32
typedef struct td {
struct urb *urb;
__u16 len;
__u16 iso_index;
} td_t;
typedef struct td_array {
int len;
td_t td[MAX_TRANS];
} td_array_t;
typedef struct hci {
struct virt_root_hub rh; /* roothub */
wait_queue_head_t waitq; /* deletion of URBs and devices needs a waitqueue */
int active; /* HC is operating */
struct list_head ctrl_list; /* set of ctrl endpoints */
struct list_head bulk_list; /* set of bulk endpoints */
struct list_head iso_list; /* set of isoc endpoints */
struct list_head intr_list; /* ordered (tree) set of int endpoints */
struct list_head del_list; /* set of entpoints to be deleted */
td_array_t *td_array;
td_array_t a_td_array;
td_array_t i_td_array[2];
struct list_head hci_hcd_list; /* list of all hci_hcd */
struct usb_bus *bus; /* our bus */
// int trans; /* number of transactions pending */
int active_urbs;
int active_trans;
int frame_number; /* frame number */
hcipriv_t hp; /* individual part of hc type */
int nakCnt;
int last_packet_nak;
} hci_t;
/*-------------------------------------------------------------------------*/
/* condition (error) CC codes and mapping OHCI like
*/
#define TD_CC_NOERROR 0x00
#define TD_CC_CRC 0x01
#define TD_CC_BITSTUFFING 0x02
#define TD_CC_DATATOGGLEM 0x03
#define TD_CC_STALL 0x04
#define TD_DEVNOTRESP 0x05
#define TD_PIDCHECKFAIL 0x06
#define TD_UNEXPECTEDPID 0x07
#define TD_DATAOVERRUN 0x08
#define TD_DATAUNDERRUN 0x09
#define TD_BUFFEROVERRUN 0x0C
#define TD_BUFFERUNDERRUN 0x0D
#define TD_NOTACCESSED 0x0F
/* urb interface functions */
static int hci_get_current_frame_number (struct usb_device *usb_dev);
static int hci_unlink_urb (struct urb * urb);
static int qu_queue_urb (hci_t * hci, struct urb * urb);
/* root hub */
static int rh_init_int_timer (struct urb * urb);
static int rh_submit_urb (struct urb * urb);
static int rh_unlink_urb (struct urb * urb);
/* schedule functions */
static int sh_add_packet (hci_t * hci, struct urb * urb);
/* hc specific functions */
static inline void hc_flush_data_cache (hci_t * hci, void *data, int len);
static inline int hc_parse_trans (hci_t * hci, int *actbytes, __u8 * data,
int *cc, int *toggle, int length, int pid,
int urb_state);
static inline int hc_add_trans (hci_t * hci, int len, void *data, int toggle,
int maxps, int slow, int endpoint, int address,
int pid, int format, int urb_state);
static void hc_start_int (hci_t * hci);
static void hc_stop_int (hci_t * hci);
static void SL811Write (hci_t * hci, char offset, char data);
/* debug| print the main components of an URB
* small: 0) header + data packets 1) just header */
static void urb_print (struct urb * urb, char *str, int small)
{
unsigned int pipe = urb->pipe;
int i, len;
if (!urb->dev || !urb->dev->bus) {
dbg ("%s URB: no dev", str);
return;
}
printk ("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,flags:%4x,len:%d/%d,stat:%d(%x)\n",
str, hci_get_current_frame_number (urb->dev),
usb_pipedevice (pipe), usb_pipeendpoint (pipe),
usb_pipeout (pipe) ? 'O' : 'I',
usb_pipetype (pipe) < 2 ? (usb_pipeint (pipe) ? "INTR" : "ISOC")
: (usb_pipecontrol (pipe) ? "CTRL" : "BULK"), urb->transfer_flags,
urb->actual_length, urb->transfer_buffer_length, urb->status,
urb->status);
if (!small) {
if (usb_pipecontrol (pipe)) {
printk (__FILE__ ": cmd(8):");
for (i = 0; i < 8; i++)
printk (" %02x", ((__u8 *) urb->setup_packet)[i]);
printk ("\n");
}
if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
printk (__FILE__ ": data(%d/%d):", urb->actual_length,
urb->transfer_buffer_length);
len = usb_pipeout (pipe) ? urb-> transfer_buffer_length : urb->actual_length;
for (i = 0; i < 2096 && i < len; i++)
printk (" %02x", ((__u8 *) urb->transfer_buffer)[i]);
printk ("%s stat:%d\n", i < len ? "..." : "",
urb->status);
}
}
}
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