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[IA64] Altix patch for fpga reset 

1) workaround a h/w reset issue
2) to improve the determination of FPGA-based h/w in
   the arch/ia64/sn/kernel/tiocx code.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Bruce Losure 2005-09-02 15:16:35 -05:00 committed by Tony Luck
parent 4706df3d3c
commit 25732ad493
4 changed files with 88 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
arch/ia64/sn/kernel/tiocx.c
View File

@ -183,11 +183,12 @@ int cx_driver_unregister(struct cx_drv *cx_driver)
* @part_num: device's part number
* @mfg_num: device's manufacturer number
* @hubdev: hub info associated with this device
* @bt: board type of the device
*
*/
int
cx_device_register(nasid_t nasid, int part_num, int mfg_num,
struct hubdev_info *hubdev)
struct hubdev_info *hubdev, int bt)
{
struct cx_dev *cx_dev;
@ -200,6 +201,7 @@ cx_device_register(nasid_t nasid, int part_num, int mfg_num,
cx_dev->cx_id.mfg_num = mfg_num;
cx_dev->cx_id.nasid = nasid;
cx_dev->hubdev = hubdev;
cx_dev->bt = bt;
cx_dev->dev.parent = NULL;
cx_dev->dev.bus = &tiocx_bus_type;
@ -238,7 +240,8 @@ static int cx_device_reload(struct cx_dev *cx_dev)
{
cx_device_unregister(cx_dev);
return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num,
cx_dev->cx_id.mfg_num, cx_dev->hubdev);
cx_dev->cx_id.mfg_num, cx_dev->hubdev,
cx_dev->bt);
}
static inline uint64_t tiocx_intr_alloc(nasid_t nasid, int widget,
@ -365,26 +368,20 @@ static void tio_corelet_reset(nasid_t nasid, int corelet)
udelay(2000);
}
static int tiocx_btchar_get(int nasid)
static int is_fpga_tio(int nasid, int *bt)
{
moduleid_t module_id;
geoid_t geoid;
int cnodeid;
int ioboard_type;
cnodeid = nasid_to_cnodeid(nasid);
geoid = cnodeid_get_geoid(cnodeid);
module_id = geo_module(geoid);
return MODULE_GET_BTCHAR(module_id);
}
ioboard_type = ia64_sn_sysctl_ioboard_get(nasid);
static int is_fpga_brick(int nasid)
{
switch (tiocx_btchar_get(nasid)) {
switch (ioboard_type) {
case L1_BRICKTYPE_SA:
case L1_BRICKTYPE_ATHENA:
case L1_BRICKTYPE_DAYTONA:
case L1_BOARDTYPE_DAYTONA:
*bt = ioboard_type;
return 1;
}
return 0;
}
@ -407,16 +404,22 @@ static int tiocx_reload(struct cx_dev *cx_dev)
if (bitstream_loaded(nasid)) {
uint64_t cx_id;
int rv;
cx_id =
*(volatile uint64_t *)(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
rv = ia64_sn_sysctl_tio_clock_reset(nasid);
if (rv) {
printk(KERN_ALERT "CX port JTAG reset failed.\n");
} else {
cx_id = *(volatile uint64_t *)
(TIO_SWIN_BASE(nasid, TIOCX_CORELET) +
WIDGET_ID);
part_num = XWIDGET_PART_NUM(cx_id);
mfg_num = XWIDGET_MFG_NUM(cx_id);
DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
/* just ignore it if it's a CE */
if (part_num == TIO_CE_ASIC_PARTNUM)
return 0;
part_num = XWIDGET_PART_NUM(cx_id);
mfg_num = XWIDGET_MFG_NUM(cx_id);
DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num);
/* just ignore it if it's a CE */
if (part_num == TIO_CE_ASIC_PARTNUM)
return 0;
}
}
cx_dev->cx_id.part_num = part_num;
@ -436,10 +439,10 @@ static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *a
{
struct cx_dev *cx_dev = to_cx_dev(dev);
return sprintf(buf, "0x%x 0x%x 0x%x %d\n",
return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n",
cx_dev->cx_id.nasid,
cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
tiocx_btchar_get(cx_dev->cx_id.nasid));
cx_dev->bt);
}
static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf,
@ -488,11 +491,12 @@ static int __init tiocx_init(void)
for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {
nasid_t nasid;
int bt;
if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
break; /* No more nasids .. bail out of loop */
if ((nasid & 0x1) && is_fpga_brick(nasid)) {
if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) {
struct hubdev_info *hubdev;
struct xwidget_info *widgetp;
@ -512,7 +516,7 @@ static int __init tiocx_init(void)
if (cx_device_register
(nasid, widgetp->xwi_hwid.part_num,
widgetp->xwi_hwid.mfg_num, hubdev) < 0)
widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0)
return -ENXIO;
else
found_tiocx_device++;

12
include/asm-ia64/sn/l1.h
View File

@ -35,4 +35,16 @@
#define L1_BRICKTYPE_ATHENA 0x2b /* + */
#define L1_BRICKTYPE_DAYTONA 0x7a /* z */
/* board type response codes */
#define L1_BOARDTYPE_IP69 0x0100 /* CA */
#define L1_BOARDTYPE_IP63 0x0200 /* CB */
#define L1_BOARDTYPE_BASEIO 0x0300 /* IB */
#define L1_BOARDTYPE_PCIE2SLOT 0x0400 /* IC */
#define L1_BOARDTYPE_PCIX3SLOT 0x0500 /* ID */
#define L1_BOARDTYPE_PCIXPCIE4SLOT 0x0600 /* IE */
#define L1_BOARDTYPE_ABACUS 0x0700 /* AB */
#define L1_BOARDTYPE_DAYTONA 0x0800 /* AD */
#define L1_BOARDTYPE_INVAL (-1) /* invalid brick type */
#endif /* _ASM_IA64_SN_L1_H */

43
include/asm-ia64/sn/sn_sal.h
View File

@ -47,6 +47,7 @@
#define SN_SAL_CONSOLE_PUTB 0x02000028
#define SN_SAL_CONSOLE_XMIT_CHARS 0x0200002a
#define SN_SAL_CONSOLE_READC 0x0200002b
#define SN_SAL_SYSCTL_OP 0x02000030
#define SN_SAL_SYSCTL_MODID_GET 0x02000031
#define SN_SAL_SYSCTL_GET 0x02000032
#define SN_SAL_SYSCTL_IOBRICK_MODULE_GET 0x02000033
@ -97,6 +98,13 @@
#define SAL_INTR_ALLOC 1
#define SAL_INTR_FREE 2
/*
* operations available on the generic SN_SAL_SYSCTL_OP
* runtime service
*/
#define SAL_SYSCTL_OP_IOBOARD 0x0001 /* retrieve board type */
#define SAL_SYSCTL_OP_TIO_JLCK_RST 0x0002 /* issue TIO clock reset */
/*
* IRouter (i.e. generalized system controller) operations
*/
@ -876,6 +884,41 @@ ia64_sn_sysctl_event_init(nasid_t nasid)
return (int) rv.v0;
}
/*
* Ask the system controller on the specified nasid to reset
* the CX corelet clock. Only valid on TIO nodes.
*/
static inline int
ia64_sn_sysctl_tio_clock_reset(nasid_t nasid)
{
struct ia64_sal_retval rv;
SAL_CALL_REENTRANT(rv, SN_SAL_SYSCTL_OP, SAL_SYSCTL_OP_TIO_JLCK_RST,
nasid, 0, 0, 0, 0, 0);
if (rv.status != 0)
return (int)rv.status;
if (rv.v0 != 0)
return (int)rv.v0;
return 0;
}
/*
* Get the associated ioboard type for a given nasid.
*/
static inline int
ia64_sn_sysctl_ioboard_get(nasid_t nasid)
{
struct ia64_sal_retval rv;
SAL_CALL_REENTRANT(rv, SN_SAL_SYSCTL_OP, SAL_SYSCTL_OP_IOBOARD,
nasid, 0, 0, 0, 0, 0);
if (rv.v0 != 0)
return (int)rv.v0;
if (rv.v1 != 0)
return (int)rv.v1;
return 0;
}
/**
* ia64_sn_get_fit_compt - read a FIT entry from the PROM header
* @nasid: NASID of node to read

3
include/asm-ia64/sn/tiocx.h
View File

@ -19,6 +19,7 @@ struct cx_id_s {
struct cx_dev {
struct cx_id_s cx_id;
int bt; /* board/blade type */
void *soft; /* driver specific */
struct hubdev_info *hubdev;
struct device dev;
@ -59,7 +60,7 @@ struct cx_drv {
extern struct sn_irq_info *tiocx_irq_alloc(nasid_t, int, int, nasid_t, int);
extern void tiocx_irq_free(struct sn_irq_info *);
extern int cx_device_unregister(struct cx_dev *);
extern int cx_device_register(nasid_t, int, int, struct hubdev_info *);
extern int cx_device_register(nasid_t, int, int, struct hubdev_info *, int);
extern int cx_driver_unregister(struct cx_drv *);
extern int cx_driver_register(struct cx_drv *);
extern uint64_t tiocx_dma_addr(uint64_t addr);