/* ARGSUSED */
static void
volunteer_for_widgets(devfs_handle_t xswitch, devfs_handle_t master)
{
xswitch_vol_t xvolinfo = NULL;
devfs_handle_t hubv;
hubinfo_t hubinfo;
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
return;
}
mutex_lock(&xvolinfo->xswitch_volunteer_mutex);
ASSERT(xvolinfo->xswitch_volunteer_count < NUM_XSWITCH_VOLUNTEER);
xvolinfo->xswitch_volunteer[xvolinfo->xswitch_volunteer_count] = master;
xvolinfo->xswitch_volunteer_count++;
/*
* if dual ported, make the lowest widgetid always be
* xswitch_volunteer[0].
*/
if (xvolinfo->xswitch_volunteer_count == NUM_XSWITCH_VOLUNTEER) {
hubv = xvolinfo->xswitch_volunteer[0];
hubinfo_get(hubv, &hubinfo);
if (hubinfo->h_widgetid != XBOW_HUBLINK_LOW) {
xvolinfo->xswitch_volunteer[0] =
xvolinfo->xswitch_volunteer[1];
xvolinfo->xswitch_volunteer[1] = hubv;
}
}
mutex_unlock(&xvolinfo->xswitch_volunteer_mutex);
}
cnodeid_t
hubdev_cnodeid_get(devfs_handle_t hub)
{
hubinfo_t hinfo = NULL;
hubinfo_get(hub, &hinfo);
ASSERT(hinfo);
return hinfo->h_cnodeid;
}
/*
* Given a hub vertex, return the base address of the Hspec space
* for that hub.
*/
caddr_t
hubdev_prombase_get(devfs_handle_t hub)
{
hubinfo_t hinfo = NULL;
hubinfo_get(hub, &hinfo);
ASSERT(hinfo);
return ((caddr_t)NODE_RBOOT_BASE(hinfo->h_nasid));
}
/*
* copy xwidget_info_t from conn_v to peer_conn_v
*/
static int
pic_bus1_widget_info_dup(vertex_hdl_t conn_v, vertex_hdl_t peer_conn_v,
cnodeid_t xbow_peer, char *peer_path)
{
xwidget_info_t widget_info, peer_widget_info;
vertex_hdl_t peer_hubv;
hubinfo_t peer_hub_info;
/* get the peer hub's widgetid */
peer_hubv = NODEPDA(xbow_peer)->node_vertex;
peer_hub_info = NULL;
hubinfo_get(peer_hubv, &peer_hub_info);
if (peer_hub_info == NULL)
return 0;
if (hwgraph_info_get_LBL(conn_v, INFO_LBL_XWIDGET,
(arbitrary_info_t *)&widget_info) == GRAPH_SUCCESS) {
peer_widget_info = kmalloc(sizeof (*(peer_widget_info)), GFP_KERNEL);
if ( !peer_widget_info ) {
return -ENOMEM;
}
memset(peer_widget_info, 0, sizeof (*(peer_widget_info)));
peer_widget_info->w_fingerprint = widget_info_fingerprint;
peer_widget_info->w_vertex = peer_conn_v;
peer_widget_info->w_id = widget_info->w_id;
peer_widget_info->w_master = peer_hubv;
peer_widget_info->w_masterid = peer_hub_info->h_widgetid;
/* structure copy */
peer_widget_info->w_hwid = widget_info->w_hwid;
peer_widget_info->w_efunc = 0;
peer_widget_info->w_einfo = 0;
peer_widget_info->w_name = kmalloc(strlen(peer_path) + 1, GFP_KERNEL);
if (!peer_widget_info->w_name) {
kfree(peer_widget_info);
return -ENOMEM;
}
strcpy(peer_widget_info->w_name, peer_path);
if (hwgraph_info_add_LBL(peer_conn_v, INFO_LBL_XWIDGET,
(arbitrary_info_t)peer_widget_info) != GRAPH_SUCCESS) {
kfree(peer_widget_info->w_name);
kfree(peer_widget_info);
return 0;
}
xwidget_info_set(peer_conn_v, peer_widget_info);
return 1;
}
printk("pic_bus1_widget_info_dup: "
"cannot get INFO_LBL_XWIDGET from 0x%lx\n", (uint64_t)conn_v);
return 0;
}
void
hubii_eint_init(cnodeid_t cnode)
{
int bit, rv;
ii_iidsr_u_t hubio_eint;
hubinfo_t hinfo;
cpuid_t intr_cpu;
devfs_handle_t hub_v;
ii_ilcsr_u_t ilcsr;
int bit_pos_to_irq(int bit);
int synergy_intr_connect(int bit, int cpuid);
hub_v = (devfs_handle_t)cnodeid_to_vertex(cnode);
ASSERT_ALWAYS(hub_v);
hubinfo_get(hub_v, &hinfo);
ASSERT(hinfo);
ASSERT(hinfo->h_cnodeid == cnode);
ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ILCSR);
if ((ilcsr.ii_ilcsr_fld_s.i_llp_stat & 0x2) == 0) {
/*
* HUB II link is not up.
* Just disable LLP, and don't connect any interrupts.
*/
ilcsr.ii_ilcsr_fld_s.i_llp_en = 0;
REMOTE_HUB_S(hinfo->h_nasid, IIO_ILCSR, ilcsr.ii_ilcsr_regval);
return;
}
/* Select a possible interrupt target where there is a free interrupt
* bit and also reserve the interrupt bit for this IO error interrupt
*/
intr_cpu = intr_heuristic(hub_v,0,INTRCONNECT_ANYBIT,II_ERRORINT,hub_v,
"HUB IO error interrupt",&bit);
if (intr_cpu == CPU_NONE) {
printk("hubii_eint_init: intr_reserve_level failed, cnode %d", cnode);
return;
}
rv = intr_connect_level(intr_cpu, bit, 0, NULL);
synergy_intr_connect(bit, intr_cpu);
request_irq(bit_pos_to_irq(bit) + (intr_cpu << 8), hubii_eint_handler, 0, "SN hub error", (void *)hub_v);
ASSERT_ALWAYS(rv >= 0);
hubio_eint.ii_iidsr_regval = 0;
hubio_eint.ii_iidsr_fld_s.i_enable = 1;
hubio_eint.ii_iidsr_fld_s.i_level = bit;/* Take the least significant bits*/
hubio_eint.ii_iidsr_fld_s.i_node = COMPACT_TO_NASID_NODEID(cnode);
hubio_eint.ii_iidsr_fld_s.i_pi_id = cpuid_to_subnode(intr_cpu);
REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, hubio_eint.ii_iidsr_regval);
}
/*
* hub_device_inquiry
* Find out the xtalk widget related information stored in this
* hub's II.
*/
void
hub_device_inquiry(devfs_handle_t xbus_vhdl, xwidgetnum_t widget)
{
devfs_handle_t xconn, hub_vhdl;
char widget_name[8];
hubreg_t ii_iidem,ii_iiwa, ii_iowa;
hubinfo_t hubinfo;
nasid_t nasid;
int d;
sprintf(widget_name, "%d", widget);
if (hwgraph_traverse(xbus_vhdl, widget_name, &xconn)
!= GRAPH_SUCCESS)
return;
hub_vhdl = device_master_get(xconn);
if (hub_vhdl == GRAPH_VERTEX_NONE)
return;
hubinfo_get(hub_vhdl, &hubinfo);
if (!hubinfo)
return;
nasid = hubinfo->h_nasid;
ii_iidem = REMOTE_HUB_L(nasid, IIO_IIDEM);
ii_iiwa = REMOTE_HUB_L(nasid, IIO_IIWA);
ii_iowa = REMOTE_HUB_L(nasid, IIO_IOWA);
#if defined(SUPPORT_PRINTING_V_FORMAT)
cmn_err(CE_CONT, "Inquiry Info for %v\n", xconn);
#else
cmn_err(CE_CONT, "Inquiry Info for 0x%p\n", &xconn);
#endif
cmn_err(CE_CONT,"\tDevices shutdown [ ");
for (d = 0 ; d <= 7 ; d++)
if (!(ii_iidem & (IIO_IIDEM_WIDGETDEV_MASK(widget,d))))
cmn_err(CE_CONT, " %d", d);
cmn_err(CE_CONT,"]\n");
cmn_err(CE_CONT,
"\tInbound access ? %s\n",
ii_iiwa & IIO_IIWA_WIDGET(widget) ? "yes" : "no");
cmn_err(CE_CONT,
"\tOutbound access ? %s\n",
ii_iowa & IIO_IOWA_WIDGET(widget) ? "yes" : "no");
}
void
hubii_eint_init(cnodeid_t cnode)
{
int bit, rv;
ii_iidsr_u_t hubio_eint;
hubinfo_t hinfo;
cpuid_t intr_cpu;
vertex_hdl_t hub_v;
int bit_pos_to_irq(int bit);
ii_ilcsr_u_t ilcsr;
hub_v = (vertex_hdl_t)cnodeid_to_vertex(cnode);
ASSERT_ALWAYS(hub_v);
hubinfo_get(hub_v, &hinfo);
ASSERT(hinfo);
ASSERT(hinfo->h_cnodeid == cnode);
ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ILCSR);
if ((ilcsr.ii_ilcsr_fld_s.i_llp_stat & 0x2) == 0) {
/*
* HUB II link is not up. Disable LLP. Clear old errors.
* Enable interrupts to handle BTE errors.
*/
ilcsr.ii_ilcsr_fld_s.i_llp_en = 0;
REMOTE_HUB_S(hinfo->h_nasid, IIO_ILCSR, ilcsr.ii_ilcsr_regval);
}
/* Select a possible interrupt target where there is a free interrupt
* bit and also reserve the interrupt bit for this IO error interrupt
*/
intr_cpu = intr_heuristic(hub_v,0,SGI_II_ERROR,0,hub_v,
"HUB IO error interrupt",&bit);
if (intr_cpu == CPU_NONE) {
printk("hubii_eint_init: intr_reserve_level failed, cnode %d", cnode);
return;
}
rv = intr_connect_level(intr_cpu, SGI_II_ERROR, 0, NULL);
request_irq(SGI_II_ERROR, hubii_eint_handler, SA_SHIRQ, "SN_hub_error", (void *)hub_v);
irq_desc(bit)->status |= SN2_IRQ_PER_HUB;
ASSERT_ALWAYS(rv >= 0);
hubio_eint.ii_iidsr_regval = 0;
hubio_eint.ii_iidsr_fld_s.i_enable = 1;
hubio_eint.ii_iidsr_fld_s.i_level = bit;/* Take the least significant bits*/
hubio_eint.ii_iidsr_fld_s.i_node = COMPACT_TO_NASID_NODEID(cnode);
hubio_eint.ii_iidsr_fld_s.i_pi_id = cpuid_to_subnode(intr_cpu);
REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, hubio_eint.ii_iidsr_regval);
}
/*
* copy xwidget_info_t from conn_v to peer_conn_v
*/
int
pic_bus1_widget_info_dup(vertex_hdl_t conn_v, vertex_hdl_t peer_conn_v,
cnodeid_t xbow_peer)
{
xwidget_info_t widget_info, peer_widget_info;
char peer_path[256];
vertex_hdl_t peer_hubv;
hubinfo_t peer_hub_info;
/* get the peer hub's widgetid */
peer_hubv = NODEPDA(xbow_peer)->node_vertex;
peer_hub_info = NULL;
hubinfo_get(peer_hubv, &peer_hub_info);
if (peer_hub_info == NULL)
return 0;
if (hwgraph_info_get_LBL(conn_v, INFO_LBL_XWIDGET,
(arbitrary_info_t *)&widget_info) == GRAPH_SUCCESS) {
NEW(peer_widget_info);
peer_widget_info->w_vertex = peer_conn_v;
peer_widget_info->w_id = widget_info->w_id;
peer_widget_info->w_master = peer_hubv;
peer_widget_info->w_masterid = peer_hub_info->h_widgetid;
/* structure copy */
peer_widget_info->w_hwid = widget_info->w_hwid;
peer_widget_info->w_efunc = 0;
peer_widget_info->w_einfo = 0;
peer_widget_info->w_name = kmalloc(strlen(peer_path) + 1, GFP_KERNEL);
strcpy(peer_widget_info->w_name, peer_path);
if (hwgraph_info_add_LBL(peer_conn_v, INFO_LBL_XWIDGET,
(arbitrary_info_t)peer_widget_info) != GRAPH_SUCCESS) {
DEL(peer_widget_info);
return 0;
}
xwidget_info_set(peer_conn_v, peer_widget_info);
return 1;
}
printk("pic_bus1_widget_info_dup: "
"cannot get INFO_LBL_XWIDGET from 0x%lx\n", (uint64_t)conn_v);
return 0;
}
/*
* Setup pio structures needed for a particular hub.
*/
static void
hub_pio_init(devfs_handle_t hubv)
{
xwidgetnum_t widget;
hubinfo_t hubinfo;
nasid_t nasid;
int bigwin;
hub_piomap_t hub_piomap;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
/* Initialize small window piomaps for this hub */
for (widget=0; widget <= HUB_WIDGET_ID_MAX; widget++) {
hub_piomap = hubinfo_swin_piomap_get(hubinfo, (int)widget);
hub_piomap->hpio_xtalk_info.xp_target = widget;
hub_piomap->hpio_xtalk_info.xp_xtalk_addr = 0;
hub_piomap->hpio_xtalk_info.xp_mapsz = SWIN_SIZE;
hub_piomap->hpio_xtalk_info.xp_kvaddr = (caddr_t)NODE_SWIN_BASE(nasid, widget);
hub_piomap->hpio_hub = hubv;
hub_piomap->hpio_flags = HUB_PIOMAP_IS_VALID;
}
/* Initialize big window piomaps for this hub */
for (bigwin=0; bigwin < HUB_NUM_BIG_WINDOW; bigwin++) {
hub_piomap = hubinfo_bwin_piomap_get(hubinfo, bigwin);
hub_piomap->hpio_xtalk_info.xp_mapsz = BWIN_SIZE;
hub_piomap->hpio_hub = hubv;
hub_piomap->hpio_holdcnt = 0;
hub_piomap->hpio_flags = HUB_PIOMAP_IS_BIGWINDOW;
IIO_ITTE_DISABLE(nasid, bigwin);
}
#ifdef BRINGUP
hub_set_piomode(nasid, HUB_PIO_CONVEYOR);
#else
/* Set all the xwidgets in fire-and-forget mode
* by default
*/
hub_set_piomode(nasid, HUB_PIO_FIRE_N_FORGET);
#endif /* BRINGUP */
sv_init(&hubinfo->h_bwwait, SV_FIFO, "bigwin");
spinlock_init(&hubinfo->h_bwlock, "bigwin");
}
/*
* hub_piomap_free destroys a caddr_t-to-xtalk pio mapping and frees
* any associated mapping resources.
*
* If this * piomap was handled with a small window, or if it was handled
* in a big window that's still in use by someone else, then there's
* nothing to do. On the other hand, if this mapping was handled
* with a big window, AND if we were the final user of that mapping,
* then destroy the mapping.
*/
void
hub_piomap_free(hub_piomap_t hub_piomap)
{
devfs_handle_t hubv;
hubinfo_t hubinfo;
nasid_t nasid;
int s;
/*
* Small windows are permanently mapped to corresponding widgets,
* so there're no resources to free.
*/
if (!(hub_piomap->hpio_flags & HUB_PIOMAP_IS_BIGWINDOW))
return;
ASSERT(hub_piomap->hpio_flags & HUB_PIOMAP_IS_VALID);
ASSERT(hub_piomap->hpio_holdcnt > 0);
hubv = hub_piomap->hpio_hub;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
s = mutex_spinlock(&hubinfo->h_bwlock);
/*
* If this is the last hold on this mapping, free it.
*/
if (--hub_piomap->hpio_holdcnt == 0) {
IIO_ITTE_DISABLE(nasid, hub_piomap->hpio_bigwin_num );
if (hub_piomap->hpio_flags & HUB_PIOMAP_IS_FIXED) {
hub_piomap->hpio_flags &= ~(HUB_PIOMAP_IS_VALID | HUB_PIOMAP_IS_FIXED);
hubinfo->h_num_big_window_fixed--;
ASSERT(hubinfo->h_num_big_window_fixed >= 0);
} else
hub_piomap->hpio_flags &= ~HUB_PIOMAP_IS_VALID;
(void)sv_signal(&hubinfo->h_bwwait);
}
mutex_spinunlock(&hubinfo->h_bwlock, s);
}
/* ARGSUSED */
caddr_t
hub_piotrans_addr( devfs_handle_t dev, /* translate to this device */
device_desc_t dev_desc, /* device descriptor */
iopaddr_t xtalk_addr, /* Crosstalk address */
size_t byte_count, /* map this many bytes */
unsigned flags) /* (currently unused) */
{
xwidget_info_t widget_info = xwidget_info_get(dev);
xwidgetnum_t widget = xwidget_info_id_get(widget_info);
devfs_handle_t hubv = xwidget_info_master_get(widget_info);
hub_piomap_t hub_piomap;
hubinfo_t hubinfo;
hubinfo_get(hubv, &hubinfo);
if (xtalk_addr + byte_count <= SWIN_SIZE) {
hub_piomap = hubinfo_swin_piomap_get(hubinfo, (int)widget);
return(hub_piomap_addr(hub_piomap, xtalk_addr, byte_count));
} else
return(0);
}
/*
* Probe to see if this hub's xtalk link is active. If so,
* return the Crosstalk Identification of the widget that we talk to.
* This is called before any of the Crosstalk infrastructure for
* this hub is set up. It's usually called on the node that we're
* probing, but not always.
*
* TBD: Prom code should actually do this work, and pass through
* hwid for our use.
*/
static void
early_probe_for_widget(devfs_handle_t hubv, xwidget_hwid_t hwid)
{
hubreg_t llp_csr_reg;
nasid_t nasid;
hubinfo_t hubinfo;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
llp_csr_reg = REMOTE_HUB_L(nasid, IIO_LLP_CSR);
/*
* If link is up, read the widget's part number.
* A direct connect widget must respond to widgetnum=0.
*/
if (llp_csr_reg & IIO_LLP_CSR_IS_UP) {
/* TBD: Put hub into "indirect" mode */
/*
* We're able to read from a widget because our hub's
* WIDGET_ID was set up earlier.
*/
widgetreg_t widget_id = *(volatile widgetreg_t *)
(RAW_NODE_SWIN_BASE(nasid, 0x0) + WIDGET_ID);
DBG("early_probe_for_widget: Hub Vertex 0x%p is UP widget_id = 0x%x Register 0x%p\n", hubv, widget_id,
(volatile widgetreg_t *)(RAW_NODE_SWIN_BASE(nasid, 0x0) + WIDGET_ID) );
hwid->part_num = XWIDGET_PART_NUM(widget_id);
hwid->rev_num = XWIDGET_REV_NUM(widget_id);
hwid->mfg_num = XWIDGET_MFG_NUM(widget_id);
/* TBD: link reset */
} else {
hwid->part_num = XWIDGET_PART_NUM_NONE;
hwid->rev_num = XWIDGET_REV_NUM_NONE;
hwid->mfg_num = XWIDGET_MFG_NUM_NONE;
}
}
/* ARGSUSED */
static void
volunteer_for_widgets(vertex_hdl_t xswitch, vertex_hdl_t master)
{
xswitch_vol_t xvolinfo = NULL;
vertex_hdl_t hubv;
hubinfo_t hubinfo;
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
if (!is_headless_node_vertex(master)) {
char name[MAXDEVNAME];
printk(KERN_WARNING
"volunteer for widgets: vertex %s has no info label",
vertex_to_name(xswitch, name, MAXDEVNAME));
}
return;
}
down(&xvolinfo->xswitch_volunteer_mutex);
ASSERT(xvolinfo->xswitch_volunteer_count < NUM_XSWITCH_VOLUNTEER);
xvolinfo->xswitch_volunteer[xvolinfo->xswitch_volunteer_count] = master;
xvolinfo->xswitch_volunteer_count++;
/*
* if dual ported, make the lowest widgetid always be
* xswitch_volunteer[0].
*/
if (xvolinfo->xswitch_volunteer_count == NUM_XSWITCH_VOLUNTEER) {
hubv = xvolinfo->xswitch_volunteer[0];
hubinfo_get(hubv, &hubinfo);
if (hubinfo->h_widgetid != XBOW_HUBLINK_LOW) {
xvolinfo->xswitch_volunteer[0] =
xvolinfo->xswitch_volunteer[1];
xvolinfo->xswitch_volunteer[1] = hubv;
}
}
up(&xvolinfo->xswitch_volunteer_mutex);
}
int
hubii_ixtt_get(devfs_handle_t widget_vhdl, ii_ixtt_u_t *ixtt)
{
xwidget_info_t widget_info = xwidget_info_get(widget_vhdl);
devfs_handle_t hub_vhdl = xwidget_info_master_get(widget_info);
hubinfo_t hub_info = 0;
nasid_t nasid;
int s;
/* Use the nasid from the hub info hanging off the hub vertex
* and widget number from the widget vertex
*/
hubinfo_get(hub_vhdl, &hub_info);
/* Being over cautious by grabbing a lock */
s = mutex_spinlock(&hub_info->h_bwlock);
nasid = hub_info->h_nasid;
ixtt->ii_ixtt_regval = REMOTE_HUB_L(nasid, IIO_IXTT);
mutex_spinunlock(&hub_info->h_bwlock, s);
return 0;
}
/*
* Probe to see if this hub's xtalk link is active. If so,
* return the Crosstalk Identification of the widget that we talk to.
* This is called before any of the Crosstalk infrastructure for
* this hub is set up. It's usually called on the node that we're
* probing, but not always.
*
* TBD: Prom code should actually do this work, and pass through
* hwid for our use.
*/
static void
early_probe_for_widget(vertex_hdl_t hubv, xwidget_hwid_t hwid)
{
nasid_t nasid;
hubinfo_t hubinfo;
hubreg_t llp_csr_reg;
widgetreg_t widget_id;
int result = 0;
hwid->part_num = XWIDGET_PART_NUM_NONE;
hwid->rev_num = XWIDGET_REV_NUM_NONE;
hwid->mfg_num = XWIDGET_MFG_NUM_NONE;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
llp_csr_reg = REMOTE_HUB_L(nasid, IIO_LLP_CSR);
if (!(llp_csr_reg & IIO_LLP_CSR_IS_UP))
return;
/* Read the Cross-Talk Widget Id on the other end */
result = snia_badaddr_val((volatile void *)
(RAW_NODE_SWIN_BASE(nasid, 0x0) + WIDGET_ID),
4, (void *) &widget_id);
if (result == 0) { /* Found something connected */
hwid->part_num = XWIDGET_PART_NUM(widget_id);
hwid->rev_num = XWIDGET_REV_NUM(widget_id);
hwid->mfg_num = XWIDGET_MFG_NUM(widget_id);
/* TBD: link reset */
} else {
hwid->part_num = XWIDGET_PART_NUM_NONE;
hwid->rev_num = XWIDGET_REV_NUM_NONE;
hwid->mfg_num = XWIDGET_MFG_NUM_NONE;
}
}
/* Interface to allow special drivers to set hub specific
* device flags.
* Return 0 on failure , 1 on success
*/
int
hub_device_flags_set(devfs_handle_t widget_vhdl,
hub_widget_flags_t flags)
{
xwidget_info_t widget_info = xwidget_info_get(widget_vhdl);
xwidgetnum_t widget_num = xwidget_info_id_get(widget_info);
devfs_handle_t hub_vhdl = xwidget_info_master_get(widget_info);
hubinfo_t hub_info = 0;
nasid_t nasid;
int s,rv;
/* Use the nasid from the hub info hanging off the hub vertex
* and widget number from the widget vertex
*/
hubinfo_get(hub_vhdl, &hub_info);
/* Being over cautious by grabbing a lock */
s = mutex_spinlock(&hub_info->h_bwlock);
nasid = hub_info->h_nasid;
rv = hub_widget_flags_set(nasid,widget_num,flags);
mutex_spinunlock(&hub_info->h_bwlock, s);
return rv;
}
/*
* First part error handler. This is called whenever any error CRB interrupt
* is generated by the II.
*/
void
bte_crb_error_handler(vertex_hdl_t hub_v, int btenum,
int crbnum, ioerror_t * ioe, int bteop)
{
hubinfo_t hinfo;
struct bteinfo_s *bte;
hubinfo_get(hub_v, &hinfo);
bte = &hinfo->h_nodepda->bte_if[btenum];
/*
* The caller has already figured out the error type, we save that
* in the bte handle structure for the thread excercising the
* interface to consume.
*/
bte->bh_error = ioe->ie_errortype + BTEFAIL_OFFSET;
bte->bte_error_count++;
BTE_PRINTK(("Got an error on cnode %d bte %d: HW error type 0x%x\n",
bte->bte_cnode, bte->bte_num, ioe->ie_errortype));
bte_error_handler((unsigned long) hinfo->h_nodepda);
}
/*
* Initialize all I/O on the specified node.
*/
static void
io_init_node(cnodeid_t cnodeid)
{
/*REFERENCED*/
vertex_hdl_t hubv, switchv, widgetv;
struct xwidget_hwid_s hwid;
hubinfo_t hubinfo;
int is_xswitch;
nodepda_t *npdap;
struct semaphore *peer_sema = 0;
uint32_t widget_partnum;
cpuid_t c = 0;
npdap = NODEPDA(cnodeid);
/*
* Get the "top" vertex for this node's hardware
* graph; it will carry the per-hub hub-specific
* data, and act as the crosstalk provider master.
* It's canonical path is probably something of the
* form /hw/module/%M/slot/%d/node
*/
hubv = cnodeid_to_vertex(cnodeid);
DBG("io_init_node: Initialize IO for cnode %d hubv(node) 0x%p npdap 0x%p\n", cnodeid, hubv, npdap);
ASSERT(hubv != GRAPH_VERTEX_NONE);
/*
* Read mfg info on this hub
*/
/*
* If nothing connected to this hub's xtalk port, we're done.
*/
early_probe_for_widget(hubv, &hwid);
if (hwid.part_num == XWIDGET_PART_NUM_NONE) {
#ifdef PROBE_TEST
if ((cnodeid == 1) || (cnodeid == 2)) {
int index;
for (index = 0; index < 600; index++)
DBG("Interfering with device probing!!!\n");
}
#endif
/* io_init_done takes cpu cookie as 2nd argument
* to do a restorenoderun for the setnoderun done
* at the start of this thread
*/
DBG("**** io_init_node: Node's 0x%p hub widget has XWIDGET_PART_NUM_NONE ****\n", hubv);
return;
/* NOTREACHED */
}
/*
* attach our hub_provider information to hubv,
* so we can use it as a crosstalk provider "master"
* vertex.
*/
xtalk_provider_register(hubv, &hub_provider);
xtalk_provider_startup(hubv);
/*
* Create a vertex to represent the crosstalk bus
* attached to this hub, and a vertex to be used
* as the connect point for whatever is out there
* on the other side of our crosstalk connection.
*
* Crosstalk Switch drivers "climb up" from their
* connection point to try and take over the switch
* point.
*
* Of course, the edges and verticies may already
* exist, in which case our net effect is just to
* associate the "xtalk_" driver with the connection
* point for the device.
*/
(void)hwgraph_path_add(hubv, EDGE_LBL_XTALK, &switchv);
DBG("io_init_node: Created 'xtalk' entry to '../node/' xtalk vertex 0x%p\n", switchv);
ASSERT(switchv != GRAPH_VERTEX_NONE);
(void)hwgraph_edge_add(hubv, switchv, EDGE_LBL_IO);
DBG("io_init_node: Created symlink 'io' from ../node/io to ../node/xtalk \n");
/*
* We need to find the widget id and update the basew_id field
* accordingly. In particular, SN00 has direct connected bridge,
* and hence widget id is Not 0.
*/
widget_partnum = (((*(volatile int32_t *)(NODE_SWIN_BASE(COMPACT_TO_NASID_NODEID(cnodeid), 0) + WIDGET_ID))) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT;
if (widget_partnum == BRIDGE_WIDGET_PART_NUM ||
widget_partnum == XBRIDGE_WIDGET_PART_NUM){
npdap->basew_id = (((*(volatile int32_t *)(NODE_SWIN_BASE(COMPACT_TO_NASID_NODEID(cnodeid), 0) + BRIDGE_WID_CONTROL))) & WIDGET_WIDGET_ID);
DBG("io_init_node: Found XBRIDGE widget_partnum= 0x%x\n", widget_partnum);
} else if ((widget_partnum == XBOW_WIDGET_PART_NUM) ||
(widget_partnum == XXBOW_WIDGET_PART_NUM) ||
(widget_partnum == PXBOW_WIDGET_PART_NUM) ) {
/*
* Xbow control register does not have the widget ID field.
* So, hard code the widget ID to be zero.
*/
DBG("io_init_node: Found XBOW widget_partnum= 0x%x\n", widget_partnum);
npdap->basew_id = 0;
} else {
npdap->basew_id = (((*(volatile int32_t *)(NODE_SWIN_BASE(COMPACT_TO_NASID_NODEID(cnodeid), 0) + BRIDGE_WID_CONTROL))) & WIDGET_WIDGET_ID);
panic(" ****io_init_node: Unknown Widget Part Number 0x%x Widget ID 0x%x attached to Hubv 0x%p ****\n", widget_partnum, npdap->basew_id, (void *)hubv);
/*NOTREACHED*/
}
{
char widname[10];
sprintf(widname, "%x", npdap->basew_id);
(void)hwgraph_path_add(switchv, widname, &widgetv);
DBG("io_init_node: Created '%s' to '..node/xtalk/' vertex 0x%p\n", widname, widgetv);
ASSERT(widgetv != GRAPH_VERTEX_NONE);
}
nodepda->basew_xc = widgetv;
is_xswitch = xwidget_hwid_is_xswitch(&hwid);
/*
* Try to become the master of the widget. If this is an xswitch
* with multiple hubs connected, only one will succeed. Mastership
* of an xswitch is used only when touching registers on that xswitch.
* The slave xwidgets connected to the xswitch can be owned by various
* masters.
*/
if (device_master_set(widgetv, hubv) == 0) {
/* Only one hub (thread) per Crosstalk device or switch makes
* it to here.
*/
/*
* Initialize whatever xwidget is hanging off our hub.
* Whatever it is, it's accessible through widgetnum 0.
*/
hubinfo_get(hubv, &hubinfo);
(void)xwidget_register(&hwid, widgetv, npdap->basew_id, hubv, hubinfo->h_widgetid);
if (!is_xswitch) {
/* io_init_done takes cpu cookie as 2nd argument
* to do a restorenoderun for the setnoderun done
* at the start of this thread
*/
io_init_done(cnodeid,c);
/* NOTREACHED */
}
/*
* Special handling for Crosstalk Switches (e.g. xbow).
* We need to do things in roughly the following order:
* 1) Initialize xswitch hardware (done above)
* 2) Determine which hubs are available to be widget masters
* 3) Discover which links are active from the xswitch
* 4) Assign xwidgets hanging off the xswitch to hubs
* 5) Initialize all xwidgets on the xswitch
*/
DBG("call volunteer_for_widgets\n");
volunteer_for_widgets(switchv, hubv);
/* If there's someone else on this crossbow, recognize him */
if (npdap->xbow_peer != INVALID_NASID) {
nodepda_t *peer_npdap = NODEPDA(NASID_TO_COMPACT_NODEID(npdap->xbow_peer));
peer_sema = &peer_npdap->xbow_sema;
DBG("call volunteer_for_widgets again\n");
volunteer_for_widgets(switchv, peer_npdap->node_vertex);
}
assign_widgets_to_volunteers(switchv, hubv);
/* Signal that we're done */
if (peer_sema) {
up(peer_sema);
}
}
else {
/* Wait 'til master is done assigning widgets. */
down(&npdap->xbow_sema);
}
#ifdef PROBE_TEST
if ((cnodeid == 1) || (cnodeid == 2)) {
int index;
for (index = 0; index < 500; index++)
DBG("Interfering with device probing!!!\n");
}
#endif
/* Now both nodes can safely inititialize widgets */
io_init_xswitch_widgets(switchv, cnodeid);
io_link_xswitch_widgets(switchv, cnodeid);
/* io_init_done takes cpu cookie as 2nd argument
* to do a restorenoderun for the setnoderun done
* at the start of this thread
*/
io_init_done(cnodeid,c);
DBG("\nio_init_node: DONE INITIALIZED ALL I/O FOR CNODEID %d\n\n", cnodeid);
}
/*ARGSUSED*/
irqreturn_t
hubii_eint_handler (int irq, void *arg, struct pt_regs *ep)
{
vertex_hdl_t hub_v;
hubinfo_t hinfo;
ii_wstat_u_t wstat;
hubreg_t idsr;
ii_ilcsr_u_t ilcsr;
/* two levels of casting avoids compiler warning.!! */
hub_v = (vertex_hdl_t)(long)(arg);
ASSERT(hub_v);
hubinfo_get(hub_v, &hinfo);
idsr = REMOTE_HUB_L(hinfo->h_nasid, IIO_ICMR);
#if 0
if (idsr & 0x1) {
/* ICMR bit is set .. we are getting into "Spurious Interrupts condition. */
printk("Cnode %d II has seen the ICMR condition\n", hinfo->h_cnodeid);
printk("***** Please file PV with the above messages *****\n");
/* panic("We have to panic to prevent further unknown states ..\n"); */
}
#endif
/*
* Identify the reason for error.
*/
wstat.ii_wstat_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_WSTAT);
if (wstat.ii_wstat_fld_s.w_crazy) {
char *reason;
/*
* We can do a couple of things here.
* Look at the fields TX_MX_RTY/XT_TAIL_TO/XT_CRD_TO to check
* which of these caused the CRAZY bit to be set.
* You may be able to check if the Link is up really.
*/
if (wstat.ii_wstat_fld_s.w_tx_mx_rty)
reason = "Micro Packet Retry Timeout";
else if (wstat.ii_wstat_fld_s.w_xt_tail_to)
reason = "Crosstalk Tail Timeout";
else if (wstat.ii_wstat_fld_s.w_xt_crd_to)
reason = "Crosstalk Credit Timeout";
else {
hubreg_t hubii_imem;
/*
* Check if widget 0 has been marked as shutdown, or
* if BTE 0/1 has been marked.
*/
hubii_imem = REMOTE_HUB_L(hinfo->h_nasid, IIO_IMEM);
if (hubii_imem & IIO_IMEM_W0ESD)
reason = "Hub Widget 0 has been Shutdown";
else if (hubii_imem & IIO_IMEM_B0ESD)
reason = "BTE 0 has been shutdown";
else if (hubii_imem & IIO_IMEM_B1ESD)
reason = "BTE 1 has been shutdown";
else reason = "Unknown";
}
/*
* Note: we may never be able to print this, if the II talking
* to Xbow which hosts the console is dead.
*/
ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ILCSR);
if (ilcsr.ii_ilcsr_fld_s.i_llp_en == 1) { /* Link is enabled */
printk("Hub %d, cnode %d to Xtalk Link failed (II_ECRAZY) Reason: %s",
hinfo->h_nasid, hinfo->h_cnodeid, reason);
}
}
/*
* Before processing any interrupt related information, clear all
* error indication and reenable interrupts. This will prevent
* lost interrupts due to the interrupt handler scanning past a PRB/CRB
* which has not errorred yet and then the PRB/CRB goes into error.
* Note, PRB errors are cleared individually.
*/
REMOTE_HUB_S(hinfo->h_nasid, IIO_IECLR, 0xff0000);
idsr = REMOTE_HUB_L(hinfo->h_nasid, IIO_IIDSR) & ~IIO_IIDSR_SENT_MASK;
REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, idsr);
/*
* It's a toss as to which one among PRB/CRB to check first.
* Current decision is based on the severity of the errors.
* IO CRB errors tend to be more severe than PRB errors.
*
* It is possible for BTE errors to have been handled already, so we
* may not see any errors handled here.
*/
(void)hubiio_crb_error_handler(hub_v, hinfo);
(void)hubiio_prb_error_handler(hub_v, hinfo);
return IRQ_HANDLED;
}
/* ARGSUSED */
static void
assign_widgets_to_volunteers(vertex_hdl_t xswitch, vertex_hdl_t hubv)
{
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
xwidgetnum_t widgetnum;
int num_volunteer;
nasid_t nasid;
hubinfo_t hubinfo;
extern int iobrick_type_get_nasid(nasid_t);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
xswitch_info = xswitch_info_get(xswitch);
ASSERT(xswitch_info != NULL);
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
if (!is_headless_node_vertex(hubv))
printk(KERN_WARNING
"assign_widgets_to_volunteers:vertex 0x%p has "
" no info label",
(void *)xswitch);
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
/* Assign master hub for xswitch itself. */
if (HUB_WIDGET_ID_MIN > 0) {
hubv = xvolinfo->xswitch_volunteer[0];
xswitch_info_master_assignment_set(xswitch_info, (xwidgetnum_t)0, hubv);
}
/*
* TBD: Use administrative information to alter assignment of
* widgets to hubs.
*/
for (widgetnum=HUB_WIDGET_ID_MIN; widgetnum <= HUB_WIDGET_ID_MAX; widgetnum++) {
int i;
/*
* Ignore disabled/empty ports.
*/
if (!xbow_port_io_enabled(nasid, widgetnum))
continue;
/*
* If this is the master IO board, assign it to the same
* hub that owned it in the prom.
*/
if (is_master_baseio_nasid_widget(nasid, widgetnum)) {
extern nasid_t snia_get_master_baseio_nasid(void);
for (i=0; i<num_volunteer; i++) {
hubv = xvolinfo->xswitch_volunteer[i];
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
if (nasid == snia_get_master_baseio_nasid())
goto do_assignment;
}
panic("Nasid == %d, console nasid == %d",
nasid, snia_get_master_baseio_nasid());
}
/*
* Assuming that we're dual-hosted and that PCI cards
* are naturally placed left-to-right, alternate PCI
* buses across both Cbricks. For Pbricks, and Ibricks,
* io_brick_map_widget() returns the PCI bus number
* associated with the given brick type and widget number.
* For Xbricks, it returns the XIO slot number.
*/
i = 0;
if (num_volunteer > 1) {
int bt;
bt = iobrick_type_get_nasid(nasid);
if (bt >= 0) {
i = io_brick_map_widget(bt, widgetnum) & 1;
}
}
hubv = xvolinfo->xswitch_volunteer[i];
do_assignment:
/*
* At this point, we want to make hubv the master of widgetnum.
*/
xswitch_info_master_assignment_set(xswitch_info, widgetnum, hubv);
}
xswitch_volunteer_delete(xswitch);
}
void
io_xswitch_widget_init(vertex_hdl_t xswitchv,
vertex_hdl_t hubv,
xwidgetnum_t widgetnum)
{
xswitch_info_t xswitch_info;
xwidgetnum_t hub_widgetid;
vertex_hdl_t widgetv;
cnodeid_t cnode;
widgetreg_t widget_id;
nasid_t nasid, peer_nasid;
struct xwidget_hwid_s hwid;
hubinfo_t hubinfo;
/*REFERENCED*/
int rc;
char pathname[128];
lboard_t *board = NULL;
char buffer[16];
char bt;
moduleid_t io_module;
slotid_t get_widget_slotnum(int xbow, int widget);
DBG("\nio_xswitch_widget_init: hubv 0x%p, xswitchv 0x%p, widgetnum 0x%x\n", hubv, xswitchv, widgetnum);
/*
* Verify that xswitchv is indeed an attached xswitch.
*/
xswitch_info = xswitch_info_get(xswitchv);
ASSERT(xswitch_info != NULL);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
cnode = NASID_TO_COMPACT_NODEID(nasid);
hub_widgetid = hubinfo->h_widgetid;
/*
* Check that the widget is an io widget and is enabled
* on this nasid or the `peer' nasid. The peer nasid
* is the other hub/bedrock connected to the xbow.
*/
peer_nasid = NODEPDA(cnode)->xbow_peer;
if (peer_nasid == INVALID_NASID)
/* If I don't have a peer, use myself. */
peer_nasid = nasid;
if (!xbow_port_io_enabled(nasid, widgetnum) &&
!xbow_port_io_enabled(peer_nasid, widgetnum)) {
return;
}
if (xswitch_info_link_ok(xswitch_info, widgetnum)) {
char name[4];
lboard_t dummy;
/*
* If the current hub is not supposed to be the master
* for this widgetnum, then skip this widget.
*/
if (xswitch_info_master_assignment_get(xswitch_info, widgetnum) != hubv) {
return;
}
board = find_lboard_class(
(lboard_t *)KL_CONFIG_INFO(nasid),
KLCLASS_IOBRICK);
if (!board && NODEPDA(cnode)->xbow_peer != INVALID_NASID) {
board = find_lboard_class(
(lboard_t *)KL_CONFIG_INFO( NODEPDA(cnode)->xbow_peer),
KLCLASS_IOBRICK);
}
if (board) {
DBG("io_xswitch_widget_init: Found KLTYPE_IOBRICK Board 0x%p brd_type 0x%x\n", board, board->brd_type);
} else {
DBG("io_xswitch_widget_init: FIXME did not find IOBOARD\n");
board = &dummy;
}
/* Copy over the nodes' geoid info */
{
lboard_t *brd;
brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
if ( brd != (lboard_t *)0 ) {
board->brd_geoid = brd->brd_geoid;
}
}
/*
* Make sure we really want to say xbrick, pbrick,
* etc. rather than XIO, graphics, etc.
*/
memset(buffer, 0, 16);
format_module_id(buffer, geo_module(board->brd_geoid), MODULE_FORMAT_BRIEF);
sprintf(pathname, EDGE_LBL_MODULE "/%s/" EDGE_LBL_SLAB "/%d" "/%s" "/%s/%d",
buffer,
geo_slab(board->brd_geoid),
(board->brd_type == KLTYPE_IBRICK) ? EDGE_LBL_IBRICK :
(board->brd_type == KLTYPE_PBRICK) ? EDGE_LBL_PBRICK :
(board->brd_type == KLTYPE_PXBRICK) ? EDGE_LBL_PXBRICK :
(board->brd_type == KLTYPE_IXBRICK) ? EDGE_LBL_IXBRICK :
(board->brd_type == KLTYPE_CGBRICK) ? EDGE_LBL_CGBRICK :
(board->brd_type == KLTYPE_OPUSBRICK) ? EDGE_LBL_OPUSBRICK :
(board->brd_type == KLTYPE_XBRICK) ? EDGE_LBL_XBRICK : "?brick",
EDGE_LBL_XTALK, widgetnum);
DBG("io_xswitch_widget_init: path= %s\n", pathname);
rc = hwgraph_path_add(hwgraph_root, pathname, &widgetv);
ASSERT(rc == GRAPH_SUCCESS);
/* This is needed to let the user programs to map the
* module,slot numbers to the corresponding widget numbers
* on the crossbow.
*/
device_master_set(hwgraph_connectpt_get(widgetv), hubv);
sprintf(name, "%d", widgetnum);
DBG("io_xswitch_widget_init: FIXME hwgraph_edge_add %s xswitchv 0x%p, widgetv 0x%p\n", name, xswitchv, widgetv);
rc = hwgraph_edge_add(xswitchv, widgetv, name);
/*
* crosstalk switch code tracks which
* widget is attached to each link.
*/
xswitch_info_vhdl_set(xswitch_info, widgetnum, widgetv);
/*
* Peek at the widget to get its crosstalk part and
* mfgr numbers, then present it to the generic xtalk
* bus provider to have its driver attach routine
* called (or not).
*/
widget_id = XWIDGET_ID_READ(nasid, widgetnum);
hwid.part_num = XWIDGET_PART_NUM(widget_id);
hwid.rev_num = XWIDGET_REV_NUM(widget_id);
hwid.mfg_num = XWIDGET_MFG_NUM(widget_id);
/* Store some inventory information about
* the xwidget in the hardware graph.
*/
xwidget_inventory_add(widgetv,board,hwid);
(void)xwidget_register(&hwid, widgetv, widgetnum,
hubv, hub_widgetid);
ia64_sn_sysctl_iobrick_module_get(nasid, &io_module);
if (io_module >= 0) {
char buffer[16];
vertex_hdl_t to, from;
char *brick_name;
extern char *iobrick_L1bricktype_to_name(int type);
memset(buffer, 0, 16);
format_module_id(buffer, geo_module(board->brd_geoid), MODULE_FORMAT_BRIEF);
if ( isupper(MODULE_GET_BTCHAR(io_module)) ) {
bt = tolower(MODULE_GET_BTCHAR(io_module));
}
else {
bt = MODULE_GET_BTCHAR(io_module);
}
brick_name = iobrick_L1bricktype_to_name(bt);
/* Add a helper vertex so xbow monitoring
* can identify the brick type. It's simply
* an edge from the widget 0 vertex to the
* brick vertex.
*/
sprintf(pathname, EDGE_LBL_HW "/" EDGE_LBL_MODULE "/%s/"
EDGE_LBL_SLAB "/%d/"
EDGE_LBL_NODE "/" EDGE_LBL_XTALK "/"
"0",
buffer, geo_slab(board->brd_geoid));
DBG("io_xswitch_widget_init: FROM path '%s'\n", pathname);
from = hwgraph_path_to_vertex(pathname);
ASSERT_ALWAYS(from);
sprintf(pathname, EDGE_LBL_HW "/" EDGE_LBL_MODULE "/%s/"
EDGE_LBL_SLAB "/%d/"
"%s",
buffer, geo_slab(board->brd_geoid), brick_name);
DBG("io_xswitch_widget_init: TO path '%s'\n", pathname);
to = hwgraph_path_to_vertex(pathname);
ASSERT_ALWAYS(to);
rc = hwgraph_edge_add(from, to,
EDGE_LBL_INTERCONNECT);
if (rc == -EEXIST)
goto link_done;
if (rc != GRAPH_SUCCESS) {
printk("%s: Unable to establish link"
" for xbmon.", pathname);
}
link_done:
}
#ifdef SN0_USE_BTE
bte_bpush_war(cnode, (void *)board);
#endif
}
}
void
io_xswitch_widget_init(devfs_handle_t xswitchv,
devfs_handle_t hubv,
xwidgetnum_t widgetnum,
async_attach_t aa)
{
xswitch_info_t xswitch_info;
xwidgetnum_t hub_widgetid;
devfs_handle_t widgetv;
cnodeid_t cnode;
widgetreg_t widget_id;
nasid_t nasid, peer_nasid;
struct xwidget_hwid_s hwid;
hubinfo_t hubinfo;
/*REFERENCED*/
int rc;
char pathname[128];
char new_name[64];
moduleid_t module;
slotid_t slot;
lboard_t *board = NULL;
char buffer[16];
slotid_t get_widget_slotnum(int xbow, int widget);
DBG("\nio_xswitch_widget_init: hubv 0x%p, xswitchv 0x%p, widgetnum 0x%x\n", hubv, xswitchv, widgetnum);
/*
* Verify that xswitchv is indeed an attached xswitch.
*/
xswitch_info = xswitch_info_get(xswitchv);
ASSERT(xswitch_info != NULL);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
cnode = NASID_TO_COMPACT_NODEID(nasid);
hub_widgetid = hubinfo->h_widgetid;
/*
* Check that the widget is an io widget and is enabled
* on this nasid or the `peer' nasid. The peer nasid
* is the other hub/bedrock connected to the xbow.
*/
peer_nasid = NODEPDA(cnode)->xbow_peer;
if (peer_nasid == INVALID_NASID)
/* If I don't have a peer, use myself. */
peer_nasid = nasid;
if (!xbow_port_io_enabled(nasid, widgetnum) &&
!xbow_port_io_enabled(peer_nasid, widgetnum)) {
return;
}
if (xswitch_info_link_ok(xswitch_info, widgetnum)) {
char name[4];
/*
* If the current hub is not supposed to be the master
* for this widgetnum, then skip this widget.
*/
if (xswitch_info_master_assignment_get(xswitch_info,
widgetnum) != hubv) {
return;
}
module = NODEPDA(cnode)->module_id;
#ifdef XBRIDGE_REGS_SIM
/* hardwire for now...could do this with something like:
* xbow_soft_t soft = hwgraph_fastinfo_get(vhdl);
* xbow_t xbow = soft->base;
* xbowreg_t xwidget_id = xbow->xb_wid_id;
* but I don't feel like figuring out vhdl right now..
* and I know for a fact the answer is 0x2d000049
*/
DBG("io_xswitch_widget_init: XBRIDGE_REGS_SIM FIXME: reading xwidget id: hardwired to xbridge (0x2d000049).\n");
DBG("XWIDGET_PART_NUM(0x2d000049)= 0x%x\n", XWIDGET_PART_NUM(0x2d000049));
if (XWIDGET_PART_NUM(0x2d000049)==XXBOW_WIDGET_PART_NUM)
#else
if (nasid_has_xbridge(nasid))
#endif /* XBRIDGE_REGS_SIM */
{
board = find_lboard_module_class(
(lboard_t *)KL_CONFIG_INFO(nasid),
module,
KLTYPE_IOBRICK);
DBG("io_xswitch_widget_init: Board 0x%p\n", board);
{
lboard_t dummy;
if (board) {
DBG("io_xswitch_widget_init: Found KLTYPE_IOBRICK Board 0x%p brd_type 0x%x\n", board, board->brd_type);
} else {
DBG("io_xswitch_widget_init: FIXME did not find IOBOARD\n");
board = &dummy;
}
}
/*
* Make sure we really want to say xbrick, pbrick,
* etc. rather than XIO, graphics, etc.
*/
#ifdef SUPPORT_PRINTING_M_FORMAT
sprintf(pathname, EDGE_LBL_MODULE "/%M/"
"%cbrick" "/%s/%d",
NODEPDA(cnode)->module_id,
#else
memset(buffer, 0, 16);
format_module_id(buffer, NODEPDA(cnode)->module_id, MODULE_FORMAT_BRIEF);
sprintf(pathname, EDGE_LBL_MODULE "/%s/"
"%cbrick" "/%s/%d",
buffer,
#endif
(board->brd_type == KLTYPE_IBRICK) ? 'I' :
(board->brd_type == KLTYPE_PBRICK) ? 'P' :
(board->brd_type == KLTYPE_XBRICK) ? 'X' : '?',
EDGE_LBL_XTALK, widgetnum);
}
DBG("io_xswitch_widget_init: path= %s\n", pathname);
rc = hwgraph_path_add(hwgraph_root, pathname, &widgetv);
ASSERT(rc == GRAPH_SUCCESS);
/* This is needed to let the user programs to map the
* module,slot numbers to the corresponding widget numbers
* on the crossbow.
*/
rc = device_master_set(hwgraph_connectpt_get(widgetv), hubv);
/* If we are looking at the global master io6
* then add information about the version of
* the io6prom as a part of "detailed inventory"
* information.
*/
if (is_master_baseio(nasid,
NODEPDA(cnode)->module_id,
get_widget_slotnum(0,widgetnum))) {
extern void klhwg_baseio_inventory_add(devfs_handle_t,
cnodeid_t);
module = NODEPDA(cnode)->module_id;
#ifdef XBRIDGE_REGS_SIM
DBG("io_xswitch_widget_init: XBRIDGE_REGS_SIM FIXME: reading xwidget id: hardwired to xbridge (0x2d000049).\n");
if (XWIDGET_PART_NUM(0x2d000049)==XXBOW_WIDGET_PART_NUM)
#else
if (nasid_has_xbridge(nasid))
#endif /* XBRIDGE_REGS_SIM */
{
board = find_lboard_module(
(lboard_t *)KL_CONFIG_INFO(nasid),
module);
/*
* Change iobrick to correct i/o brick
*/
#ifdef SUPPORT_PRINTING_M_FORMAT
sprintf(pathname, EDGE_LBL_MODULE "/%M/"
#else
sprintf(pathname, EDGE_LBL_MODULE "/%x/"
#endif
"iobrick" "/%s/%d",
NODEPDA(cnode)->module_id,
EDGE_LBL_XTALK, widgetnum);
} else {
slot = get_widget_slotnum(0, widgetnum);
board = get_board_name(nasid, module, slot,
new_name);
/*
* Create the vertex for the widget,
* using the decimal
* widgetnum as the name of the primary edge.
*/
#ifdef SUPPORT_PRINTING_M_FORMAT
sprintf(pathname, EDGE_LBL_MODULE "/%M/"
EDGE_LBL_SLOT "/%s",
NODEPDA(cnode)->module_id,
new_name);
#else
memset(buffer, 0, 16);
format_module_id(buffer, NODEPDA(cnode)->module_id, MODULE_FORMAT_BRIEF);
sprintf(pathname, EDGE_LBL_MODULE "/%s/"
EDGE_LBL_SLOT "/%s",
buffer,
new_name);
#endif
}
rc = hwgraph_path_add(hwgraph_root, pathname, &widgetv);
DBG("io_xswitch_widget_init: (2) path= %s\n", pathname);
/*
* This is a weird ass code needed for error injection
* purposes.
*/
rc = device_master_set(hwgraph_connectpt_get(widgetv), hubv);
klhwg_baseio_inventory_add(widgetv,cnode);
}
sprintf(name, "%d", widgetnum);
DBG("io_xswitch_widget_init: FIXME hwgraph_edge_add %s xswitchv 0x%p, widgetv 0x%p\n", name, xswitchv, widgetv);
rc = hwgraph_edge_add(xswitchv, widgetv, name);
/*
* crosstalk switch code tracks which
* widget is attached to each link.
*/
xswitch_info_vhdl_set(xswitch_info, widgetnum, widgetv);
/*
* Peek at the widget to get its crosstalk part and
* mfgr numbers, then present it to the generic xtalk
* bus provider to have its driver attach routine
* called (or not).
*/
#ifdef XBRIDGE_REGS_SIM
widget_id = 0x2d000049;
DBG("io_xswitch_widget_init: XBRIDGE_REGS_SIM FIXME: id hardwired to widget_id\n");
#else
widget_id = XWIDGET_ID_READ(nasid, widgetnum);
#endif /* XBRIDGE_REGS_SIM */
hwid.part_num = XWIDGET_PART_NUM(widget_id);
hwid.rev_num = XWIDGET_REV_NUM(widget_id);
hwid.mfg_num = XWIDGET_MFG_NUM(widget_id);
/* Store some inventory information about
* the xwidget in the hardware graph.
*/
xwidget_inventory_add(widgetv,board,hwid);
(void)xwidget_register(&hwid, widgetv, widgetnum,
hubv, hub_widgetid,
aa);
#ifdef SN0_USE_BTE
bte_bpush_war(cnode, (void *)board);
#endif
}
/*ARGSUSED*/
void
hubii_eint_handler (int irq, void *arg, struct pt_regs *ep)
{
devfs_handle_t hub_v;
hubinfo_t hinfo;
ii_wstat_u_t wstat;
hubreg_t idsr;
panic("Hubii interrupt\n");
#ifdef ajm
/*
* If the NI has a problem, everyone has a problem. We shouldn't
* even attempt to handle other errors when an NI error is present.
*/
if (check_ni_errors()) {
hubni_error_handler("II interrupt", 1);
/* NOTREACHED */
}
/* two levels of casting avoids compiler warning.!! */
hub_v = (devfs_handle_t)(long)(arg);
ASSERT(hub_v);
hubinfo_get(hub_v, &hinfo);
/*
* Identify the reason for error.
*/
wstat.ii_wstat_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_WSTAT);
if (wstat.ii_wstat_fld_s.w_crazy) {
char *reason;
/*
* We can do a couple of things here.
* Look at the fields TX_MX_RTY/XT_TAIL_TO/XT_CRD_TO to check
* which of these caused the CRAZY bit to be set.
* You may be able to check if the Link is up really.
*/
if (wstat.ii_wstat_fld_s.w_tx_mx_rty)
reason = "Micro Packet Retry Timeout";
else if (wstat.ii_wstat_fld_s.w_xt_tail_to)
reason = "Crosstalk Tail Timeout";
else if (wstat.ii_wstat_fld_s.w_xt_crd_to)
reason = "Crosstalk Credit Timeout";
else {
hubreg_t hubii_imem;
/*
* Check if widget 0 has been marked as shutdown, or
* if BTE 0/1 has been marked.
*/
hubii_imem = REMOTE_HUB_L(hinfo->h_nasid, IIO_IMEM);
if (hubii_imem & IIO_IMEM_W0ESD)
reason = "Hub Widget 0 has been Shutdown";
else if (hubii_imem & IIO_IMEM_B0ESD)
reason = "BTE 0 has been shutdown";
else if (hubii_imem & IIO_IMEM_B1ESD)
reason = "BTE 1 has been shutdown";
else reason = "Unknown";
}
/*
* Note: we may never be able to print this, if the II talking
* to Xbow which hosts the console is dead.
*/
printk("Hub %d to Xtalk Link failed (II_ECRAZY) Reason: %s",
hinfo->h_cnodeid, reason);
}
/*
* It's a toss as to which one among PRB/CRB to check first.
* Current decision is based on the severity of the errors.
* IO CRB errors tend to be more severe than PRB errors.
*
* It is possible for BTE errors to have been handled already, so we
* may not see any errors handled here.
*/
(void)hubiio_crb_error_handler(hub_v, hinfo);
(void)hubiio_prb_error_handler(hub_v, hinfo);
/*
* If we reach here, it indicates crb/prb handlers successfully
* handled the error. So, re-enable II to send more interrupt
* and return.
*/
REMOTE_HUB_S(hinfo->h_nasid, IIO_IECLR, 0xffffff);
idsr = REMOTE_HUB_L(hinfo->h_nasid, IIO_IIDSR) & ~IIO_IIDSR_SENT_MASK;
REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, idsr);
#endif /* ajm */
}
/* ARGSUSED */
static void
assign_widgets_to_volunteers(devfs_handle_t xswitch, devfs_handle_t hubv)
{
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
xwidgetnum_t widgetnum;
int num_volunteer;
nasid_t nasid;
hubinfo_t hubinfo;
extern int iobrick_type_get_nasid(nasid_t);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
xswitch_info = xswitch_info_get(xswitch);
ASSERT(xswitch_info != NULL);
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
/* Assign master hub for xswitch itself. */
if (HUB_WIDGET_ID_MIN > 0) {
hubv = xvolinfo->xswitch_volunteer[0];
xswitch_info_master_assignment_set(xswitch_info, (xwidgetnum_t)0, hubv);
}
/*
* TBD: Use administrative information to alter assignment of
* widgets to hubs.
*/
for (widgetnum=HUB_WIDGET_ID_MIN; widgetnum <= HUB_WIDGET_ID_MAX; widgetnum++) {
int i;
/*
* Ignore disabled/empty ports.
*/
if (!xbow_port_io_enabled(nasid, widgetnum))
continue;
/*
* If this is the master IO board, assign it to the same
* hub that owned it in the prom.
*/
if (is_master_nasid_widget(nasid, widgetnum)) {
for (i=0; i<num_volunteer; i++) {
hubv = xvolinfo->xswitch_volunteer[i];
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
if (nasid == get_console_nasid())
goto do_assignment;
}
}
/*
* Assuming that we're dual-hosted and that PCI cards
* are naturally placed left-to-right, alternate PCI
* buses across both Cbricks. For Pbricks, and Ibricks,
* io_brick_map_widget() returns the PCI bus number
* associated with the given brick type and widget number.
* For Xbricks, it returns the XIO slot number.
*/
i = 0;
if (num_volunteer > 1) {
int bt;
bt = iobrick_type_get_nasid(nasid);
if (bt >= 0) {
/*
* PXBRICK has two busses per widget so this
* algorithm wouldn't work (all busses would
* be assigned to one volunteer). Change the
* bricktype to PBRICK whose mapping is setup
* suchthat 2 of the PICs will be assigned to
* one volunteer and the other one will be
* assigned to the other volunteer.
*/
if (bt == MODULE_PXBRICK)
bt = MODULE_PBRICK;
i = io_brick_map_widget(bt, widgetnum) & 1;
}
}
hubv = xvolinfo->xswitch_volunteer[i];
do_assignment:
/*
* At this point, we want to make hubv the master of widgetnum.
*/
xswitch_info_master_assignment_set(xswitch_info, widgetnum, hubv);
}
xswitch_volunteer_delete(xswitch);
}
/* ARGSUSED */
hub_piomap_t
hub_piomap_alloc(devfs_handle_t dev, /* set up mapping for this device */
device_desc_t dev_desc, /* device descriptor */
iopaddr_t xtalk_addr, /* map for this xtalk_addr range */
size_t byte_count,
size_t byte_count_max, /* maximum size of a mapping */
unsigned flags) /* defined in sys/pio.h */
{
xwidget_info_t widget_info = xwidget_info_get(dev);
xwidgetnum_t widget = xwidget_info_id_get(widget_info);
devfs_handle_t hubv = xwidget_info_master_get(widget_info);
hubinfo_t hubinfo;
hub_piomap_t bw_piomap;
int bigwin, free_bw_index;
nasid_t nasid;
volatile hubreg_t junk;
int s;
/* sanity check */
if (byte_count_max > byte_count)
return(NULL);
hubinfo_get(hubv, &hubinfo);
/* If xtalk_addr range is mapped by a small window, we don't have
* to do much
*/
if (xtalk_addr + byte_count <= SWIN_SIZE)
return(hubinfo_swin_piomap_get(hubinfo, (int)widget));
/* We need to use a big window mapping. */
/*
* TBD: Allow requests that would consume multiple big windows --
* split the request up and use multiple mapping entries.
* For now, reject requests that span big windows.
*/
if ((xtalk_addr % BWIN_SIZE) + byte_count > BWIN_SIZE)
return(NULL);
/* Round xtalk address down for big window alignement */
xtalk_addr = xtalk_addr & ~(BWIN_SIZE-1);
/*
* Check to see if an existing big window mapping will suffice.
*/
tryagain:
free_bw_index = -1;
s = mutex_spinlock(&hubinfo->h_bwlock);
for (bigwin=0; bigwin < HUB_NUM_BIG_WINDOW; bigwin++) {
bw_piomap = hubinfo_bwin_piomap_get(hubinfo, bigwin);
/* If mapping is not valid, skip it */
if (!(bw_piomap->hpio_flags & HUB_PIOMAP_IS_VALID)) {
free_bw_index = bigwin;
continue;
}
/*
* If mapping is UNFIXED, skip it. We don't allow sharing
* of UNFIXED mappings, because this would allow starvation.
*/
if (!(bw_piomap->hpio_flags & HUB_PIOMAP_IS_FIXED))
continue;
if ( xtalk_addr == bw_piomap->hpio_xtalk_info.xp_xtalk_addr &&
widget == bw_piomap->hpio_xtalk_info.xp_target) {
bw_piomap->hpio_holdcnt++;
mutex_spinunlock(&hubinfo->h_bwlock, s);
return(bw_piomap);
}
}
/*
* None of the existing big window mappings will work for us --
* we need to establish a new mapping.
*/
/* Insure that we don't consume all big windows with FIXED mappings */
if (flags & PIOMAP_FIXED) {
if (hubinfo->h_num_big_window_fixed < HUB_NUM_BIG_WINDOW-1) {
ASSERT(free_bw_index >= 0);
hubinfo->h_num_big_window_fixed++;
} else {
bw_piomap = NULL;
goto done;
}
} else { /* PIOMAP_UNFIXED */
if (free_bw_index < 0) {
if (flags & PIOMAP_NOSLEEP) {
bw_piomap = NULL;
goto done;
}
sv_wait(&hubinfo->h_bwwait, PZERO, &hubinfo->h_bwlock, s);
goto tryagain;
}
}
/* OK! Allocate big window free_bw_index for this mapping. */
/*
* The code below does a PIO write to setup an ITTE entry.
* We need to prevent other CPUs from seeing our updated memory
* shadow of the ITTE (in the piomap) until the ITTE entry is
* actually set up; otherwise, another CPU might attempt a PIO
* prematurely.
*
* Also, the only way we can know that an entry has been received
* by the hub and can be used by future PIO reads/writes is by
* reading back the ITTE entry after writing it.
*
* For these two reasons, we PIO read back the ITTE entry after
* we write it.
*/
nasid = hubinfo->h_nasid;
IIO_ITTE_PUT(nasid, free_bw_index, HUB_PIO_MAP_TO_MEM, widget, xtalk_addr);
junk = HUB_L(IIO_ITTE_GET(nasid, free_bw_index));
bw_piomap = hubinfo_bwin_piomap_get(hubinfo, free_bw_index);
bw_piomap->hpio_xtalk_info.xp_dev = dev;
bw_piomap->hpio_xtalk_info.xp_target = widget;
bw_piomap->hpio_xtalk_info.xp_xtalk_addr = xtalk_addr;
bw_piomap->hpio_xtalk_info.xp_kvaddr = (caddr_t)NODE_BWIN_BASE(nasid, free_bw_index);
bw_piomap->hpio_holdcnt++;
bw_piomap->hpio_bigwin_num = free_bw_index;
if (flags & PIOMAP_FIXED)
bw_piomap->hpio_flags |= HUB_PIOMAP_IS_VALID | HUB_PIOMAP_IS_FIXED;
else
bw_piomap->hpio_flags |= HUB_PIOMAP_IS_VALID;
done:
mutex_spinunlock(&hubinfo->h_bwlock, s);
return(bw_piomap);
}
/*
* >>> bte_crb_error_handler needs to be broken into two parts. The
* first should cleanup the CRB. The second should wait until all bte
* related CRB's are complete and then do the error reset.
*/
void
bte_crb_error_handler(devfs_handle_t hub_v, int btenum,
int crbnum, ioerror_t *ioe, int bteop)
/*
* Function: bte_crb_error_handler
* Purpose: Process a CRB for a specific HUB/BTE
* Parameters: hub_v - vertex of hub in HW graph
* btenum - bte number on hub (0 == a, 1 == b)
* crbnum - crb number being processed
* Notes:
* This routine assumes serialization at a higher level. A CRB
* should not be processed more than once. The error recovery
* follows the following sequence - if you change this, be real
* sure about what you are doing.
*
*/
{
hubinfo_t hinfo;
icrba_t crba;
icrbb_t crbb;
nasid_t n;
hubreg_t iidsr, imem, ieclr;
hubinfo_get(hub_v, &hinfo);
n = hinfo->h_nasid;
/*
* The following 10 lines (or so) are adapted from IRIXs
* bte_crb_error function. No clear documentation tells
* why the crb needs to complete normally in order for
* the BTE to resume normal operations. This first step
* appears vital!
*/
/*
* Zero error and error code to prevent error_dump complaining
* about these CRBs. Copy the CRB to the notification line.
* The crb address is in shub format (physical address shifted
* right by cacheline size).
*/
crbb.ii_icrb0_b_regval = REMOTE_HUB_L(n, IIO_ICRB_B(crbnum));
crbb.b_error=0;
crbb.b_ecode=0;
REMOTE_HUB_S(n, IIO_ICRB_B(crbnum), crbb.ii_icrb0_b_regval);
crba.ii_icrb0_a_regval = REMOTE_HUB_L(n, IIO_ICRB_A(crbnum));
crba.a_addr = TO_PHYS((u64)&nodepda->bte_if[btenum].notify) >> 3;
crba.a_valid = 1;
REMOTE_HUB_S(n, IIO_ICRB_A(crbnum), crba.ii_icrb0_a_regval);
REMOTE_HUB_S(n, IIO_ICCR,
IIO_ICCR_PENDING | IIO_ICCR_CMD_FLUSH | crbnum);
while (REMOTE_HUB_L(n, IIO_ICCR) & IIO_ICCR_PENDING)
;
/* Terminate the BTE. */
/* >>> The other bte transfer will need to be restarted. */
HUB_L((shubreg_t *)((nodepda->bte_if[btenum].bte_base_addr +
IIO_IBCT0 - IIO_IBLS0)));
imem = REMOTE_HUB_L(n, IIO_IMEM);
ieclr = REMOTE_HUB_L(n, IIO_IECLR);
if (btenum == 0) {
imem |= IIO_IMEM_W0ESD | IIO_IMEM_B0ESD;
ieclr|= IECLR_BTE0;
} else {
imem |= IIO_IMEM_W0ESD | IIO_IMEM_B1ESD;
ieclr|= IECLR_BTE1;
}
REMOTE_HUB_S(n, IIO_IMEM, imem);
REMOTE_HUB_S(n, IIO_IECLR, ieclr);
iidsr = REMOTE_HUB_L(n, IIO_IIDSR);
iidsr &= ~IIO_IIDSR_SENT_MASK;
iidsr |= IIO_IIDSR_ENB_MASK;
REMOTE_HUB_S(n, IIO_IIDSR, iidsr);
bte_reset_nasid(n);
*nodepda->bte_if[btenum].most_rcnt_na = IBLS_ERROR;
}
/*
* pci_bus_map_create() - Called by pci_bus_to_hcl_cvlink() to finish the job.
*
* Linux PCI Bus numbers are assigned from lowest module_id numbers
* (rack/slot etc.) starting from HUB_WIDGET_ID_MAX down to
* HUB_WIDGET_ID_MIN:
* widgetnum 15 gets lower Bus Number than widgetnum 14 etc.
*
* Given 2 modules 001c01 and 001c02 we get the following mappings:
* 001c01, widgetnum 15 = Bus number 0
* 001c01, widgetnum 14 = Bus number 1
* 001c02, widgetnum 15 = Bus number 3
* 001c02, widgetnum 14 = Bus number 4
* etc.
*
* The rational for starting Bus Number 0 with Widget number 15 is because
* the system boot disks are always connected via Widget 15 Slot 0 of the
* I-brick. Linux creates /dev/sd* devices(naming) strating from Bus Number 0
* Therefore, /dev/sda1 will be the first disk, on Widget 15 of the lowest
* module id(Master Cnode) of the system.
*
*/
static int
pci_bus_map_create(devfs_handle_t xtalk)
{
devfs_handle_t master_node_vertex = NULL;
devfs_handle_t xwidget = NULL;
devfs_handle_t pci_bus = NULL;
hubinfo_t hubinfo = NULL;
xwidgetnum_t widgetnum;
char pathname[128];
graph_error_t rv;
/*
* Loop throught this vertex and get the Xwidgets ..
*/
for (widgetnum = HUB_WIDGET_ID_MAX; widgetnum >= HUB_WIDGET_ID_MIN; widgetnum--) {
#if 0
{
int pos;
char dname[256];
pos = devfs_generate_path(xtalk, dname, 256);
printk("%s : path= %s\n", __FUNCTION__, &dname[pos]);
}
#endif
sprintf(pathname, "%d", widgetnum);
xwidget = NULL;
/*
* Example - /hw/module/001c16/Pbrick/xtalk/8 is the xwidget
* /hw/module/001c16/Pbrick/xtalk/8/pci/1 is device
*/
rv = hwgraph_traverse(xtalk, pathname, &xwidget);
if ( (rv != GRAPH_SUCCESS) ) {
if (!xwidget)
continue;
}
sprintf(pathname, "%d/"EDGE_LBL_PCI, widgetnum);
pci_bus = NULL;
if (hwgraph_traverse(xtalk, pathname, &pci_bus) != GRAPH_SUCCESS)
if (!pci_bus)
continue;
/*
* Assign the correct bus number and also the nasid of this
* pci Xwidget.
*
* Should not be any race here ...
*/
num_bridges++;
busnum_to_pcibr_vhdl[num_bridges - 1] = pci_bus;
/*
* Get the master node and from there get the NASID.
*/
master_node_vertex = device_master_get(xwidget);
if (!master_node_vertex) {
printk("WARNING: pci_bus_map_create: Unable to get .master for vertex 0x%p\n", (void *)xwidget);
}
hubinfo_get(master_node_vertex, &hubinfo);
if (!hubinfo) {
printk("WARNING: pci_bus_map_create: Unable to get hubinfo for master node vertex 0x%p\n", (void *)master_node_vertex);
return(1);
} else {
busnum_to_nid[num_bridges - 1] = hubinfo->h_nasid;
}
/*
* Pre assign DMA maps needed for 32 Bits Page Map DMA.
*/
busnum_to_atedmamaps[num_bridges - 1] = (void *) kmalloc(
sizeof(struct sn_dma_maps_s) * MAX_ATE_MAPS, GFP_KERNEL);
if (!busnum_to_atedmamaps[num_bridges - 1])
printk("WARNING: pci_bus_map_create: Unable to precreate ATE DMA Maps for busnum %d vertex 0x%p\n", num_bridges - 1, (void *)xwidget);
memset(busnum_to_atedmamaps[num_bridges - 1], 0x0,
sizeof(struct sn_dma_maps_s) * MAX_ATE_MAPS);
}
return(0);
}
/* ARGSUSED */
static void
assign_widgets_to_volunteers(devfs_handle_t xswitch, devfs_handle_t hubv)
{
int curr_volunteer, num_volunteer;
xwidgetnum_t widgetnum;
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
nasid_t nasid;
hubinfo_t hubinfo;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
xswitch_info = xswitch_info_get(xswitch);
ASSERT(xswitch_info != NULL);
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
#ifdef LATER
if (!is_headless_node_vertex(hubv)) {
#if defined(SUPPORT_PRINTING_V_FORMAT)
printk(KERN_WARNING "assign_widgets_to_volunteers:vertex %v has "
" no info label",
xswitch);
#else
printk(KERN_WARNING "assign_widgets_to_volunteers:vertex 0x%x has "
" no info label",
xswitch);
#endif
}
#endif /* LATER */
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
curr_volunteer = 0;
/* Assign master hub for xswitch itself. */
if (HUB_WIDGET_ID_MIN > 0) {
hubv = xvolinfo->xswitch_volunteer[0];
xswitch_info_master_assignment_set(xswitch_info, (xwidgetnum_t)0, hubv);
}
/*
* TBD: Use administrative information to alter assignment of
* widgets to hubs.
*/
for (widgetnum=HUB_WIDGET_ID_MIN; widgetnum <= HUB_WIDGET_ID_MAX; widgetnum++) {
/*
* Ignore disabled/empty ports.
*/
if (!xbow_port_io_enabled(nasid, widgetnum))
continue;
/*
* If this is the master IO board, assign it to the same
* hub that owned it in the prom.
*/
if (is_master_nasid_widget(nasid, widgetnum)) {
int i;
for (i=0; i<num_volunteer; i++) {
hubv = xvolinfo->xswitch_volunteer[i];
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
if (nasid == get_console_nasid())
goto do_assignment;
}
#ifdef LATER
PRINT_PANIC("Nasid == %d, console nasid == %d",
nasid, get_console_nasid());
#endif
}
/*
* Do a round-robin assignment among the volunteer nodes.
*/
hubv = xvolinfo->xswitch_volunteer[curr_volunteer];
curr_volunteer = (curr_volunteer + 1) % num_volunteer;
/* fall through */
do_assignment:
/*
* At this point, we want to make hubv the master of widgetnum.
*/
xswitch_info_master_assignment_set(xswitch_info, widgetnum, hubv);
}
xswitch_volunteer_delete(xswitch);
}
