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Commit af6e9e07 authored by Irene Zubarev's avatar Irene Zubarev Committed by Greg Kroah-Hartman
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[PATCH] IBM PCI Hotplug driver update 

- fix polling logic
- add ability to write [chassis/rxe]#slot# instead of just slot#
parent d9a26363
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Showing with 993 additions and 383 deletions
drivers/hotplug/ibmphp.h
View file @ af6e9e07
......@@ -39,7 +39,8 @@ extern int ibmphp_debug;
#else
#define MY_NAME THIS_MODULE->name
#endif
#define debug(fmt, arg...) do { if (ibmphp_debug) printk(KERN_DEBUG "%s: " fmt , MY_NAME , ## arg); } while (0)
#define debug(fmt, arg...) do { if (ibmphp_debug == 1) printk(KERN_DEBUG "%s: " fmt , MY_NAME , ## arg); } while (0)
#define debug_pci(fmt, arg...) do { if (ibmphp_debug) printk(KERN_DEBUG "%s: " fmt , MY_NAME , ## arg); } while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format , MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format , MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format , MY_NAME , ## arg)
......@@ -121,6 +122,7 @@ struct scal_detail {
u8 port1_port_connect;
u8 port2_node_connect;
u8 port2_port_connect;
u8 chassis_num;
// struct list_head scal_detail_list;
};
......@@ -139,9 +141,27 @@ struct rio_detail {
u8 port1_port_connect;
u8 first_slot_num;
u8 status;
// struct list_head rio_detail_list;
u8 wpindex;
u8 chassis_num;
struct list_head rio_detail_list;
};
struct opt_rio {
u8 rio_type;
u8 chassis_num;
u8 first_slot_num;
u8 middle_num;
struct list_head opt_rio_list;
};
struct opt_rio_lo {
u8 rio_type;
u8 chassis_num;
u8 first_slot_num;
u8 middle_num;
u8 pack_count;
struct list_head opt_rio_lo_list;
};
/****************************************************************
* HPC DESCRIPTOR NODE *
......@@ -153,7 +173,6 @@ struct ebda_hpc_list {
short phys_addr;
// struct list_head ebda_hpc_list;
};
/*****************************************************************
* IN HPC DATA STRUCTURE, THE ASSOCIATED SLOT AND BUS *
* STRUCTURE *
......@@ -195,6 +214,9 @@ struct wpeg_i2c_ctlr_access {
u8 i2c_addr;
};
#define HPC_DEVICE_ID 0x0246
#define HPC_SUBSYSTEM_ID 0x0247
#define HPC_PCI_OFFSET 0x40
/*************************************************************************
* RSTC DESCRIPTOR NODE *
*************************************************************************/
......@@ -215,8 +237,9 @@ struct ebda_pci_rsrc {
u8 rsrc_type;
u8 bus_num;
u8 dev_fun;
ulong start_addr;
ulong end_addr;
u32 start_addr;
u32 end_addr;
u8 marked; /* for NVRAM */
struct list_head ebda_pci_rsrc_list;
};
......@@ -248,7 +271,7 @@ struct bus_info {
***********************************************************/
extern struct list_head ibmphp_ebda_pci_rsrc_head;
extern struct list_head ibmphp_slot_head;
extern struct list_head ibmphp_res_head;
/***********************************************************
* FUNCTION PROTOTYPES *
***********************************************************/
......@@ -263,6 +286,7 @@ extern void ibmphp_free_ebda_pci_rsrc_queue (void);
extern struct bus_info *ibmphp_find_same_bus_num (u32);
extern int ibmphp_get_bus_index (u8);
extern u16 ibmphp_get_total_controllers (void);
extern int ibmphp_register_pci (void);
/* passed parameters */
#define MEM 0
......@@ -739,6 +763,7 @@ extern int ibmphp_disable_slot (struct hotplug_slot *); /* This function is call
extern int ibmphp_update_slot_info (struct slot *); /* This function is called from HPC, so we need it to not be be static */
extern int ibmphp_configure_card (struct pci_func *, u8);
extern int ibmphp_unconfigure_card (struct slot **, int);
extern void ibmphp_increase_count (void);
extern struct hotplug_slot_ops ibmphp_hotplug_slot_ops;
static inline void long_delay (int delay)
......
drivers/hotplug/ibmphp_core.c
View file @ af6e9e07
......@@ -44,7 +44,7 @@
#define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev)
#define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt)
#define DRIVER_VERSION "0.3"
#define DRIVER_VERSION "0.6"
#define DRIVER_DESC "IBM Hot Plug PCI Controller Driver"
int ibmphp_debug;
......@@ -88,6 +88,8 @@ static inline int get_cur_bus_info (struct slot **sl)
slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED (slot_cur->busstatus);
if (READ_BUS_MODE (slot_cur->ctrl))
slot_cur->bus_on->current_bus_mode = CURRENT_BUS_MODE (slot_cur->busstatus);
else
slot_cur->bus_on->current_bus_mode = 0xFF;
debug ("busstatus = %x, bus_speed = %x, bus_mode = %x\n", slot_cur->busstatus, slot_cur->bus_on->current_speed, slot_cur->bus_on->current_bus_mode);
......@@ -108,11 +110,15 @@ static inline int slot_update (struct slot **sl)
static int __init get_max_slots (void)
{
struct slot * slot_cur;
struct list_head * tmp;
int slot_count = 0;
u8 slot_count = 0;
list_for_each (tmp, &ibmphp_slot_head)
++slot_count;
list_for_each (tmp, &ibmphp_slot_head) {
slot_cur = list_entry (tmp, struct slot, ibm_slot_list);
/* sometimes the hot-pluggable slots start with 4 (not always from 1 */
slot_count = max (slot_count, slot_cur->number);
}
return slot_count;
}
......@@ -330,7 +336,7 @@ static int get_power_status (struct hotplug_slot *hotplug_slot, u8 * value)
memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
if (!hpcrc) {
*value = SLOT_POWER (myslot.status);
*value = SLOT_PWRGD (myslot.status);
rc = 0;
}
}
......@@ -394,15 +400,22 @@ static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, u8 * value)
if (pslot) {
rc = 0;
mode = pslot->supported_bus_mode;
*value = pslot->supported_speed;
*value &= 0x0f;
if (mode == BUS_MODE_PCIX)
*value |= 0x80;
else if (mode == BUS_MODE_PCI)
*value |= 0x40;
else
*value |= 0x20;
*value = pslot->supported_speed;
switch (*value) {
case BUS_SPEED_33:
break;
case BUS_SPEED_66:
if (mode == BUS_MODE_PCIX)
*value += 0x01;
break;
case BUS_SPEED_100:
case BUS_SPEED_133:
*value = pslot->supported_speed + 0x01;
break;
default:
*/ /* Note (will need to change): there would be soon 256, 512 also */
/* rc = -ENODEV;
}
}
} else
rc = -ENODEV;
......@@ -429,14 +442,25 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, u8 * value)
if (!rc) {
mode = pslot->bus_on->current_bus_mode;
*value = pslot->bus_on->current_speed;
*value &= 0x0f;
if (mode == BUS_MODE_PCIX)
*value |= 0x80;
else if (mode == BUS_MODE_PCI)
*value |= 0x40;
else
*value |= 0x20;
switch (*value) {
case BUS_SPEED_33:
break;
case BUS_SPEED_66:
if (mode == BUS_MODE_PCIX)
*value += 0x01;
else if (mode == BUS_MODE_PCI)
;
else
*value = PCI_SPEED_UNKNOWN;
break;
case BUS_SPEED_100:
case BUS_SPEED_133:
*value += 0x01;
break;
default:
*/ /* Note of change: there would also be 256, 512 soon */
/* rc = -ENODEV;
}
}
}
} else
......@@ -454,7 +478,7 @@ static int get_max_adapter_speed_1 (struct hotplug_slot *hotplug_slot, u8 * valu
int hpcrc = 0;
struct slot myslot;
debug ("get_max_adapter_speed - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong)hotplug_slot, (ulong) value);
debug ("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong)hotplug_slot, (ulong) value);
if (flag)
ibmphp_lock_operations ();
......@@ -485,17 +509,16 @@ static int get_max_adapter_speed_1 (struct hotplug_slot *hotplug_slot, u8 * valu
if (flag)
ibmphp_unlock_operations ();
debug ("get_adapter_present - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
debug ("get_max_adapter_speed_1 - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
return rc;
}
static int get_card_bus_names (struct hotplug_slot *hotplug_slot, char * value)
static int get_bus_name (struct hotplug_slot *hotplug_slot, char * value)
{
int rc = -ENODEV;
struct slot *pslot = NULL;
struct pci_dev * dev = NULL;
debug ("get_card_bus_names - Entry hotplug_slot[%lx] \n", (ulong)hotplug_slot);
debug ("get_bus_name - Entry hotplug_slot[%lx] \n", (ulong)hotplug_slot);
ibmphp_lock_operations ();
......@@ -503,26 +526,17 @@ static int get_card_bus_names (struct hotplug_slot *hotplug_slot, char * value)
pslot = (struct slot *) hotplug_slot->private;
if (pslot) {
rc = 0;
if (pslot->func)
dev = pslot->func->dev;
else
dev = pci_find_slot (pslot->bus, (pslot->device << 3) | (0x00 & 0x7));
if (dev)
snprintf (value, 100, "Bus %d : %s", pslot->bus,dev->name);
else
snprintf (value, 100, "Bus %d", pslot->bus);
snprintf (value, 100, "Bus %x", pslot->bus);
}
} else
rc = -ENODEV;
ibmphp_unlock_operations ();
debug ("get_card_bus_names - Exit rc[%d] value[%x]\n", rc, *value);
debug ("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value);
return rc;
}
*/
/*******************************************************************************
* This routine will initialize the ops data structure used in the validate
* function. It will also power off empty slots that are powered on since BIOS
......@@ -531,12 +545,14 @@ static int get_card_bus_names (struct hotplug_slot *hotplug_slot, char * value)
static int __init init_ops (void)
{
struct slot *slot_cur;
struct list_head *tmp;
int retval;
int j;
int rc;
int j;
for (j = 0; j < MAX_OPS; j++) {
ops[j] = (int *) kmalloc ((max_slots + 1) * sizeof (int), GFP_KERNEL);
memset (ops[j], 0, (max_slots + 1) * sizeof (int));
if (!ops[j]) {
err ("out of system memory \n");
return -ENOMEM;
......@@ -547,12 +563,13 @@ static int __init init_ops (void)
ops[REMOVE][0] = 0;
ops[DETAIL][0] = 0;
for (j = 1; j <= max_slots; j++) {
list_for_each (tmp, &ibmphp_slot_head) {
slot_cur = list_entry (tmp, struct slot, ibm_slot_list);
slot_cur = ibmphp_get_slot_from_physical_num (j);
if (!slot_cur)
return -ENODEV;
debug ("BEFORE GETTING SLOT STATUS, slot # %x\n", slot_cur->number);
if (slot_cur->ctrl->revision == 0xFF)
if (get_ctrl_revision (slot_cur, &slot_cur->ctrl->revision))
return -1;
......@@ -572,21 +589,21 @@ static int __init init_ops (void)
debug ("status = %x, ext_status = %x\n", slot_cur->status, slot_cur->ext_status);
debug ("SLOT_POWER = %x, SLOT_PRESENT = %x, SLOT_LATCH = %x\n", SLOT_POWER (slot_cur->status), SLOT_PRESENT (slot_cur->status), SLOT_LATCH (slot_cur->status));
if (!(SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
if (!(SLOT_PWRGD (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
/* No power, adapter, and latch closed */
ops[ADD][j] = 1;
ops[ADD][slot_cur->number] = 1;
else
ops[ADD][j] = 0;
ops[ADD][slot_cur->number] = 0;
ops[DETAIL][j] = 1;
ops[DETAIL][slot_cur->number] = 1;
if ((SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
if ((SLOT_PWRGD (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
/*Power,adapter,latch closed */
ops[REMOVE][j] = 1;
ops[REMOVE][slot_cur->number] = 1;
else
ops[REMOVE][j] = 0;
ops[REMOVE][slot_cur->number] = 0;
if ((SLOT_POWER (slot_cur->status)) && !(SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status))) {
if ((SLOT_PWRGD (slot_cur->status)) && !(SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status))) {
debug ("BEFORE POWER OFF COMMAND\n");
rc = power_off (slot_cur);
if (rc)
......@@ -624,7 +641,7 @@ static int validate (struct slot *slot_cur, int opn)
if (retval)
return retval;
if (!(SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
if (!(SLOT_PWRGD (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
&& !(SLOT_LATCH (slot_cur->status)))
ops[ADD][number] = 1;
else
......@@ -632,7 +649,7 @@ static int validate (struct slot *slot_cur, int opn)
ops[DETAIL][number] = 1;
if ((SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
if ((SLOT_PWRGD (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
&& !(SLOT_LATCH (slot_cur->status)))
ops[REMOVE][number] = 1;
else
......@@ -678,7 +695,7 @@ int ibmphp_update_slot_info (struct slot *slot_cur)
}
snprintf (buffer, 10, "%d", slot_cur->number);
info->power_status = SLOT_POWER (slot_cur->status);
info->power_status = SLOT_PWRGD (slot_cur->status);
info->attention_status = SLOT_ATTN (slot_cur->status, slot_cur->ext_status);
info->latch_status = SLOT_LATCH (slot_cur->status);
if (!SLOT_PRESENT (slot_cur->status)) {
......@@ -688,8 +705,8 @@ int ibmphp_update_slot_info (struct slot *slot_cur)
info->adapter_status = 1;
// get_max_adapter_speed_1 (slot_cur->hotplug_slot, &info->max_adapter_speed_status, 0);
}
/*
bus_speed = slot_cur->bus_on->current_speed;
/* !!!!!!!!!TO DO: THIS NEEDS TO CHANGE!!!!!!!!!!!!! */
/* bus_speed = slot_cur->bus_on->current_speed;
bus_speed &= 0x0f;
if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX)
......@@ -701,7 +718,7 @@ int ibmphp_update_slot_info (struct slot *slot_cur)
info->cur_bus_speed_status = bus_speed;
info->max_bus_speed_status = slot_cur->hotplug_slot->info->max_bus_speed_status;
// To do: card_bus_names
// To do: bus_names
*/
rc = pci_hp_change_slot_info (buffer, info);
kfree (info);
......@@ -775,8 +792,10 @@ static void free_slots (void)
struct list_head * tmp;
struct list_head * next;
list_for_each_safe (tmp, next, &ibmphp_slot_head) {
debug ("%s -- enter\n", __FUNCTION__);
list_for_each_safe (tmp, next, &ibmphp_slot_head) {
slot_cur = list_entry (tmp, struct slot, ibm_slot_list);
pci_hp_deregister (slot_cur->hotplug_slot);
......@@ -795,7 +814,9 @@ static void free_slots (void)
ibmphp_unconfigure_card (&slot_cur, -1); /* we don't want to actually remove the resources, since free_resources will do just that */
kfree (slot_cur);
slot_cur = NULL;
}
debug ("%s -- exit\n", __FUNCTION__);
}
static int ibm_is_pci_dev_in_use (struct pci_dev *dev)
......@@ -851,7 +872,7 @@ static int ibm_unconfigure_visit_pci_dev_phase2 (struct pci_dev_wrapped *wrapped
if (temp_func)
temp_func->dev = NULL;
else
err ("No pci_func representation for bus, devfn = %d, %x\n", dev->bus->number, dev->devfn);
debug ("No pci_func representation for bus, devfn = %d, %x\n", dev->bus->number, dev->devfn);
return 0;
}
......@@ -965,6 +986,34 @@ static struct pci_visit configure_functions = {
.visit_pci_dev =configure_visit_pci_dev,
};
/*
* The following function is to fix kernel bug regarding
* getting bus entries, here we manually add those primary
* bus entries to kernel bus structure whenever apply
*/
static u8 bus_structure_fixup (u8 busno)
{
struct pci_bus bus_t;
struct pci_dev dev_t;
u16 l;
if (!find_bus (busno) || !(ibmphp_find_same_bus_num (busno)))
return 1;
bus_t.number = busno;
bus_t.ops = ibmphp_pci_root_ops;
dev_t.bus = &bus_t;
for (dev_t.devfn=0; dev_t.devfn<256; dev_t.devfn += 8) {
if (!pci_read_config_word (&dev_t, PCI_VENDOR_ID, &l) && l != 0x0000 && l != 0xffff) {
debug ("%s - Inside bus_struture_fixup() \n", __FUNCTION__);
pci_scan_bus (busno, ibmphp_pci_root_ops, NULL);
break;
}
}
return 0;
}
static int ibm_configure_device (struct pci_func *func)
{
unsigned char bus;
......@@ -972,6 +1021,7 @@ static int ibm_configure_device (struct pci_func *func)
struct pci_bus *child;
struct pci_dev *temp;
int rc = 0;
int flag = 0; /* this is to make sure we don't double scan the bus, for bridged devices primarily */
struct pci_dev_wrapped wrapped_dev;
struct pci_bus_wrapped wrapped_bus;
......@@ -980,6 +1030,8 @@ static int ibm_configure_device (struct pci_func *func)
memset (&wrapped_bus, 0, sizeof (struct pci_bus_wrapped));
memset (&dev0, 0, sizeof (struct pci_dev));
if (!(bus_structure_fixup (func->busno)))
flag = 1;
if (func->dev == NULL)
func->dev = pci_find_slot (func->busno, (func->device << 3) | (func->function & 0x7));
......@@ -995,7 +1047,7 @@ static int ibm_configure_device (struct pci_func *func)
return 0;
}
}
if (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) {
pci_read_config_byte (func->dev, PCI_SECONDARY_BUS, &bus);
child = (struct pci_bus *) pci_add_new_bus (func->dev->bus, (func->dev), bus);
pci_do_scan_bus (child);
......@@ -1028,7 +1080,7 @@ static int is_bus_empty (struct slot * slot_cur)
rc = slot_update (&tmp_slot);
if (rc)
return 0;
if (SLOT_PRESENT (tmp_slot->status) && SLOT_POWER (tmp_slot->status))
if (SLOT_PRESENT (tmp_slot->status) && SLOT_PWRGD (tmp_slot->status))
return 0;
i++;
}
......@@ -1046,6 +1098,9 @@ static int set_bus (struct slot * slot_cur)
int rc;
u8 speed;
u8 cmd = 0x0;
const struct list_head *tmp;
struct pci_dev * dev;
int retval;
debug ("%s - entry slot # %d \n", __FUNCTION__, slot_cur->number);
if (SET_BUS_STATUS (slot_cur->ctrl) && is_bus_empty (slot_cur)) {
......@@ -1091,6 +1146,14 @@ static int set_bus (struct slot * slot_cur)
cmd = HPC_BUS_100PCIXMODE;
break;
case BUS_SPEED_133:
/* This is to take care of the bug in CIOBX chip*/
list_for_each (tmp, &pci_devices) {
dev = (struct pci_dev *) pci_dev_g (tmp);
if (dev) {
if ((dev->vendor == 0x1166) && (dev->device == 0x0101))
ibmphp_hpc_writeslot (slot_cur, HPC_BUS_100PCIXMODE);
}
}
cmd = HPC_BUS_133PCIXMODE;
break;
default:
......@@ -1103,9 +1166,17 @@ static int set_bus (struct slot * slot_cur)
return -ENODEV;
}
debug ("setting bus speed for slot %d, cmd %x\n", slot_cur->number, cmd);
ibmphp_hpc_writeslot (slot_cur, cmd);
retval = ibmphp_hpc_writeslot (slot_cur, cmd);
if (retval) {
err ("setting bus speed failed\n");
return retval;
}
if (CTLR_RESULT (slot_cur->ctrl->status)) {
err ("command not completed successfully in set_bus \n");
return -EIO;
}
}
/* This is for x400, once Brandon fixes the firmware,
/* This is for x440, once Brandon fixes the firmware,
will not need this delay */
long_delay (1 * HZ);
debug ("%s -Exit \n", __FUNCTION__);
......@@ -1128,7 +1199,7 @@ static int check_limitations (struct slot *slot_cur)
for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) {
tmp_slot = ibmphp_get_slot_from_physical_num (i);
if ((SLOT_POWER (tmp_slot->status)) && !(SLOT_CONNECT (tmp_slot->status)))
if ((SLOT_PWRGD (tmp_slot->status)) && !(SLOT_CONNECT (tmp_slot->status)))
count++;
}
get_cur_bus_info (&slot_cur);
......@@ -1384,11 +1455,15 @@ int ibmphp_disable_slot (struct hotplug_slot *hotplug_slot)
debug ("DISABLING SLOT... \n");
if (slot_cur == NULL)
if (slot_cur == NULL) {
ibmphp_unlock_operations ();
return -ENODEV;
}
if (slot_cur->ctrl == NULL)
if (slot_cur->ctrl == NULL) {
ibmphp_unlock_operations ();
return -ENODEV;
}
flag = slot_cur->flag; /* to see if got here from polling */
......@@ -1463,7 +1538,8 @@ int ibmphp_disable_slot (struct hotplug_slot *hotplug_slot)
return -EFAULT;
}
ibmphp_update_slot_info (slot_cur);
if (flag)
ibmphp_update_slot_info (slot_cur);
ibmphp_unlock_operations ();
return -EFAULT;
}
......@@ -1503,10 +1579,10 @@ struct hotplug_slot_ops ibmphp_hotplug_slot_ops = {
.get_attention_status = get_attention_status,
.get_latch_status = get_latch_status,
.get_adapter_status = get_adapter_present,
/* get_max_bus_speed_status: get_max_bus_speed,
/* .get_max_bus_speed_status = get_max_bus_speed,
.get_max_adapter_speed_status = get_max_adapter_speed,
.get_cur_bus_speed_status = get_cur_bus_speed,
.get_card_bus_names_status = get_card_bus_names,
.get_bus_name_status = get_bus_name,
*/
};
......@@ -1559,7 +1635,7 @@ static int __init ibmphp_init (void)
debug ("AFTER Resource & EBDA INITIALIZATIONS\n");
max_slots = get_max_slots ();
if (init_ops ()) {
ibmphp_unload ();
return -ENODEV;
......@@ -1570,11 +1646,9 @@ static int __init ibmphp_init (void)
return -ENODEV;
}
/* lock ourselves into memory with a module count of -1
* so that no one can unload us. */
/* if no NVRAM module selected, lock ourselves into memory with a
* module count of -1 so that no one can unload us. */
MOD_DEC_USE_COUNT;
return 0;
}
......
drivers/hotplug/ibmphp_ebda.c
View file @ af6e9e07
......@@ -56,11 +56,17 @@ LIST_HEAD (ibmphp_slot_head);
/* Local variables */
static struct ebda_hpc_list *hpc_list_ptr;
static struct ebda_rsrc_list *rsrc_list_ptr;
static struct rio_table_hdr *rio_table_ptr;
static struct rio_table_hdr *rio_table_ptr = NULL;
static LIST_HEAD (ebda_hpc_head);
static LIST_HEAD (bus_info_head);
static LIST_HEAD (rio_vg_head);
static LIST_HEAD (rio_lo_head);
static LIST_HEAD (opt_vg_head);
static LIST_HEAD (opt_lo_head);
static void *io_mem;
char *chassis_str, *rxe_str, *str;
/* Local functions */
static int ebda_rsrc_controller (void);
static int ebda_rsrc_rsrc (void);
......@@ -173,18 +179,77 @@ static void __init print_bus_info (void)
}
}
static void print_ebda_pci_rsrc (void)
static void print_lo_info (void)
{
struct rio_detail *ptr;
struct list_head *ptr1;
debug ("print_lo_info ---- \n");
list_for_each (ptr1, &rio_lo_head) {
ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
}
}
static void print_vg_info (void)
{
struct rio_detail *ptr;
struct list_head *ptr1;
debug ("%s --- \n", __FUNCTION__);
list_for_each (ptr1, &rio_vg_head) {
ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
debug ("%s - rio_node_id = %x\n", __FUNCTION__, ptr->rio_node_id);
debug ("%s - rio_type = %x\n", __FUNCTION__, ptr->rio_type);
debug ("%s - owner_id = %x\n", __FUNCTION__, ptr->owner_id);
debug ("%s - first_slot_num = %x\n", __FUNCTION__, ptr->first_slot_num);
debug ("%s - wpindex = %x\n", __FUNCTION__, ptr->wpindex);
debug ("%s - chassis_num = %x\n", __FUNCTION__, ptr->chassis_num);
}
}
static void __init print_ebda_pci_rsrc (void)
{
struct ebda_pci_rsrc *ptr;
struct list_head *ptr1;
list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %lx end addr: %lx\n",
debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
__FUNCTION__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
}
}
static void __init print_ibm_slot (void)
{
struct slot *ptr;
struct list_head *ptr1;
list_for_each (ptr1, &ibmphp_slot_head) {
ptr = list_entry (ptr1, struct slot, ibm_slot_list);
debug ("%s - slot_number: %x \n", __FUNCTION__, ptr->number);
}
}
static void __init print_opt_vg (void)
{
struct opt_rio *ptr;
struct list_head *ptr1;
debug ("%s --- \n", __FUNCTION__);
list_for_each (ptr1, &opt_vg_head) {
ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
debug ("%s - rio_type %x \n", __FUNCTION__, ptr->rio_type);
debug ("%s - chassis_num: %x \n", __FUNCTION__, ptr->chassis_num);
debug ("%s - first_slot_num: %x \n", __FUNCTION__, ptr->first_slot_num);
debug ("%s - middle_num: %x \n", __FUNCTION__, ptr->middle_num);
}
}
static void __init print_ebda_hpc (void)
{
struct controller *hpc_ptr;
......@@ -221,6 +286,7 @@ static void __init print_ebda_hpc (void)
break;
case 2:
case 4:
debug ("%s - wpegbbar: %lx\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.wpegbbar);
debug ("%s - i2c_addr: %x\n", __FUNCTION__, hpc_ptr->u.wpeg_ctlr.i2c_addr);
debug ("%s - irq: %x\n", __FUNCTION__, hpc_ptr->irq);
......@@ -357,31 +423,380 @@ int __init ibmphp_access_ebda (void)
rio_complete = 1;
}
}
if (hs_complete && rio_complete) {
rc = ebda_rsrc_controller ();
if (rc) {
iounmap(io_mem);
return rc;
}
rc = ebda_rsrc_rsrc ();
if (rc) {
iounmap(io_mem);
return rc;
}
if (!hs_complete && !rio_complete) {
iounmap (io_mem);
return -ENODEV;
}
if (rio_table_ptr) {
if (rio_complete == 1 && rio_table_ptr->ver_num == 3) {
rc = ebda_rio_table ();
if (rc) {
iounmap(io_mem);
iounmap (io_mem);
return rc;
}
iounmap (io_mem);
return 0;
}
}
}
rc = ebda_rsrc_controller ();
if (rc) {
iounmap (io_mem);
return rc;
}
rc = ebda_rsrc_rsrc ();
if (rc) {
iounmap (io_mem);
return rc;
}
iounmap (io_mem);
return -ENODEV;
return 0;
}
/*
* map info of scalability details and rio details from physical address
*/
static int __init ebda_rio_table (void)
{
u16 offset;
u8 i;
struct rio_detail *rio_detail_ptr;
offset = rio_table_ptr->offset;
offset += 12 * rio_table_ptr->scal_count;
// we do concern about rio details
for (i = 0; i < rio_table_ptr->riodev_count; i++) {
rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL);
if (!rio_detail_ptr)
return -ENOMEM;
memset (rio_detail_ptr, 0, sizeof (struct rio_detail));
rio_detail_ptr->rio_node_id = readb (io_mem + offset);
rio_detail_ptr->bbar = readl (io_mem + offset + 1);
rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
rio_detail_ptr->status = readb (io_mem + offset + 12);
rio_detail_ptr->wpindex = readb (io_mem + offset + 13);
rio_detail_ptr->chassis_num = readb (io_mem + offset + 14);
// debug ("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status);
//create linked list of chassis
if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5)
list_add (&rio_detail_ptr->rio_detail_list, &rio_vg_head);
//create linked list of expansion box
else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7)
list_add (&rio_detail_ptr->rio_detail_list, &rio_lo_head);
else
// not in my concern
kfree (rio_detail_ptr);
offset += 15;
}
print_lo_info ();
print_vg_info ();
return 0;
}
/*
* reorganizing linked list of chassis
*/
static struct opt_rio *search_opt_vg (u8 chassis_num)
{
struct opt_rio *ptr;
struct list_head *ptr1;
list_for_each (ptr1, &opt_vg_head) {
ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
if (ptr->chassis_num == chassis_num)
return ptr;
}
return NULL;
}
static int __init combine_wpg_for_chassis (void)
{
struct opt_rio *opt_rio_ptr = NULL;
struct rio_detail *rio_detail_ptr = NULL;
struct list_head *list_head_ptr = NULL;
list_for_each (list_head_ptr, &rio_vg_head) {
rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
if (!opt_rio_ptr) {
opt_rio_ptr = (struct opt_rio *) kmalloc (sizeof (struct opt_rio), GFP_KERNEL);
if (!opt_rio_ptr)
return -ENOMEM;
memset (opt_rio_ptr, 0, sizeof (struct opt_rio));
opt_rio_ptr->rio_type = rio_detail_ptr->rio_type;
opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num;
opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num;
list_add (&opt_rio_ptr->opt_rio_list, &opt_vg_head);
} else {
opt_rio_ptr->first_slot_num = min (opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
opt_rio_ptr->middle_num = max (opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num);
}
}
print_opt_vg ();
return 0;
}
/*
* reorgnizing linked list of expansion box
*/
static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
{
struct opt_rio_lo *ptr;
struct list_head *ptr1;
list_for_each (ptr1, &opt_lo_head) {
ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
if (ptr->chassis_num == chassis_num)
return ptr;
}
return NULL;
}
static int combine_wpg_for_expansion (void)
{
struct opt_rio_lo *opt_rio_lo_ptr = NULL;
struct rio_detail *rio_detail_ptr = NULL;
struct list_head *list_head_ptr = NULL;
list_for_each (list_head_ptr, &rio_lo_head) {
rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
if (!opt_rio_lo_ptr) {
opt_rio_lo_ptr = (struct opt_rio_lo *) kmalloc (sizeof (struct opt_rio_lo), GFP_KERNEL);
if (!opt_rio_lo_ptr)
return -ENOMEM;
memset (opt_rio_lo_ptr, 0, sizeof (struct opt_rio_lo));
opt_rio_lo_ptr->rio_type = rio_detail_ptr->rio_type;
opt_rio_lo_ptr->chassis_num = rio_detail_ptr->chassis_num;
opt_rio_lo_ptr->first_slot_num = rio_detail_ptr->first_slot_num;
opt_rio_lo_ptr->middle_num = rio_detail_ptr->first_slot_num;
opt_rio_lo_ptr->pack_count = 1;
list_add (&opt_rio_lo_ptr->opt_rio_lo_list, &opt_lo_head);
} else {
opt_rio_lo_ptr->first_slot_num = min (opt_rio_lo_ptr->first_slot_num, rio_detail_ptr->first_slot_num);
opt_rio_lo_ptr->middle_num = max (opt_rio_lo_ptr->middle_num, rio_detail_ptr->first_slot_num);
opt_rio_lo_ptr->pack_count = 2;
}
}
return 0;
}
static char *convert_2digits_to_char (int var)
{
int bit;
char *str1;
str = (char *) kmalloc (3, GFP_KERNEL);
memset (str, 0, 3);
str1 = (char *) kmalloc (2, GFP_KERNEL);
memset (str, 0, 3);
bit = (int)(var / 10);
switch (bit) {
case 0:
//one digit number
*str = (char)(var + 48);
return str;
default:
//2 digits number
*str1 = (char)(bit + 48);
strncpy (str, str1, 1);
memset (str1, 0, 3);
*str1 = (char)((var % 10) + 48);
strcat (str, str1);
return str;
}
return NULL;
}
/* Since we don't know the max slot number per each chassis, hence go
* through the list of all chassis to find out the range
* Arguments: slot_num, 1st slot number of the chassis we think we are on,
* var (0 = chassis, 1 = expansion box)
*/
static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
{
struct opt_rio *opt_vg_ptr = NULL;
struct opt_rio_lo *opt_lo_ptr = NULL;
struct list_head *ptr = NULL;
int rc = 0;
if (!var) {
list_for_each (ptr, &opt_vg_head) {
opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
rc = -ENODEV;
break;
}
}
} else {
list_for_each (ptr, &opt_lo_head) {
opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
rc = -ENODEV;
break;
}
}
}
return rc;
}
static struct opt_rio_lo * find_rxe_num (u8 slot_num)
{
struct opt_rio_lo *opt_lo_ptr;
struct list_head *ptr;
list_for_each (ptr, &opt_lo_head) {
opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
//check to see if this slot_num belongs to expansion box
if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
return opt_lo_ptr;
}
return NULL;
}
static struct opt_rio * find_chassis_num (u8 slot_num)
{
struct opt_rio *opt_vg_ptr;
struct list_head *ptr;
list_for_each (ptr, &opt_vg_head) {
opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
//check to see if this slot_num belongs to chassis
if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
return opt_vg_ptr;
}
return NULL;
}
/* This routine will find out how many slots are in the chassis, so that
* the slot numbers for rxe100 would start from 1, and not from 7, or 6 etc
*/
static u8 calculate_first_slot (u8 slot_num)
{
u8 first_slot = 1;
struct list_head * list;
struct slot * slot_cur;
list_for_each (list, &ibmphp_slot_head) {
slot_cur = list_entry (list, struct slot, ibm_slot_list);
if (slot_cur->ctrl) {
if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
first_slot = slot_cur->ctrl->ending_slot_num;
}
}
return first_slot + 1;
}
static char *create_file_name (struct slot * slot_cur)
{
struct opt_rio *opt_vg_ptr = NULL;
struct opt_rio_lo *opt_lo_ptr = NULL;
char *ptr_chassis_num, *ptr_rxe_num, *ptr_slot_num;
int which = 0; /* rxe = 1, chassis = 0 */
u8 number = 1; /* either chassis or rxe # */
u8 first_slot = 1;
u8 slot_num;
u8 flag = 0;
if (!slot_cur) {
err ("Structure passed is empty \n");
return NULL;
}
slot_num = slot_cur->number;
chassis_str = (char *) kmalloc (30, GFP_KERNEL);
memset (chassis_str, 0, 30);
rxe_str = (char *) kmalloc (30, GFP_KERNEL);
memset (rxe_str, 0, 30);
ptr_chassis_num = (char *) kmalloc (3, GFP_KERNEL);
memset (ptr_chassis_num, 0, 3);
ptr_rxe_num = (char *) kmalloc (3, GFP_KERNEL);
memset (ptr_rxe_num, 0, 3);
ptr_slot_num = (char *) kmalloc (3, GFP_KERNEL);
memset (ptr_slot_num, 0, 3);
strcpy (chassis_str, "chassis");
strcpy (rxe_str, "rxe");
if (rio_table_ptr) {
if (rio_table_ptr->ver_num == 3) {
opt_vg_ptr = find_chassis_num (slot_num);
opt_lo_ptr = find_rxe_num (slot_num);
}
}
if (opt_vg_ptr) {
if (opt_lo_ptr) {
if ((slot_num - opt_vg_ptr->first_slot_num) > (slot_num - opt_lo_ptr->first_slot_num)) {
number = opt_lo_ptr->chassis_num;
first_slot = opt_lo_ptr->first_slot_num;
which = 1; /* it is RXE */
} else {
first_slot = opt_vg_ptr->first_slot_num;
number = opt_vg_ptr->chassis_num;
which = 0;
}
} else {
first_slot = opt_vg_ptr->first_slot_num;
number = opt_vg_ptr->chassis_num;
which = 0;
}
++flag;
} else if (opt_lo_ptr) {
number = opt_lo_ptr->chassis_num;
first_slot = opt_lo_ptr->first_slot_num;
which = 1;
++flag;
} else if (rio_table_ptr) {
if (rio_table_ptr->ver_num == 3) {
/* if both NULL and we DO have correct RIO table in BIOS */
return NULL;
}
}
if (!flag) {
if (slot_cur->ctrl->ctlr_type == 4) {
first_slot = calculate_first_slot (slot_num);
which = 1;
} else {
which = 0;
}
}
switch (which) {
case 0:
/* Chassis */
*ptr_chassis_num = (char)(number + 48);
strcat (chassis_str, ptr_chassis_num);
kfree (ptr_chassis_num);
strcat (chassis_str, "slot");
ptr_slot_num = convert_2digits_to_char (slot_num - first_slot + 1);
strcat (chassis_str, ptr_slot_num);
kfree (ptr_slot_num);
return chassis_str;
break;
case 1:
/* RXE */
*ptr_rxe_num = (char)(number + 48);
strcat (rxe_str, ptr_rxe_num);
kfree (ptr_rxe_num);
strcat (rxe_str, "slot");
ptr_slot_num = convert_2digits_to_char (slot_num - first_slot + 1);
strcat (rxe_str, ptr_slot_num);
kfree (ptr_slot_num);
return rxe_str;
break;
}
return NULL;
}
/*
* map info (ctlr-id, slot count, slot#.. bus count, bus#, ctlr type...) of
......@@ -400,6 +815,8 @@ static int __init ebda_rsrc_controller (void)
struct ebda_hpc_slot *slot_ptr;
struct bus_info *bus_info_ptr1, *bus_info_ptr2;
int rc;
struct slot *slot_cur;
struct list_head *list;
addr = hpc_list_ptr->phys_addr;
for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
......@@ -510,7 +927,7 @@ static int __init ebda_rsrc_controller (void)
hpc_ptr->u.pci_ctlr.bus = readb (io_mem + addr);
hpc_ptr->u.pci_ctlr.dev_fun = readb (io_mem + addr + 1);
hpc_ptr->irq = readb (io_mem + addr + 2);
addr += 3;
addr += 3;
break;
case 0:
......@@ -521,12 +938,6 @@ static int __init ebda_rsrc_controller (void)
break;
case 2:
hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
hpc_ptr->irq = readb (io_mem + addr + 5);
addr += 6;
break;
case 4:
hpc_ptr->u.wpeg_ctlr.wpegbbar = readl (io_mem + addr);
hpc_ptr->u.wpeg_ctlr.i2c_addr = readb (io_mem + addr + 4);
......@@ -537,12 +948,16 @@ static int __init ebda_rsrc_controller (void)
iounmap (io_mem);
return -ENODEV;
}
/* following 3 line: Now our driver only supports I2c ctlrType */
if ((hpc_ptr->ctlr_type != 2) && (hpc_ptr->ctlr_type != 4)) {
err ("Please run this driver on ibm xseries440\n ");
return -ENODEV;
}
//reorganize chassis' linked list
combine_wpg_for_chassis ();
combine_wpg_for_expansion ();
hpc_ptr->revision = 0xff;
hpc_ptr->options = 0xff;
hpc_ptr->starting_slot_num = hpc_ptr->slots[0].slot_num;
......@@ -566,7 +981,7 @@ static int __init ebda_rsrc_controller (void)
}
memset (hp_slot_ptr->info, 0, sizeof (struct hotplug_slot_info));
hp_slot_ptr->name = (char *) kmalloc (10, GFP_KERNEL);
hp_slot_ptr->name = (char *) kmalloc (30, GFP_KERNEL);
if (!hp_slot_ptr->name) {
iounmap (io_mem);
kfree (hp_slot_ptr->info);
......@@ -583,9 +998,7 @@ static int __init ebda_rsrc_controller (void)
return -ENOMEM;
}
((struct slot *)hp_slot_ptr->private)->flag = TRUE;
snprintf (hp_slot_ptr->name, 10, "%d", hpc_ptr->slots[index].slot_num);
((struct slot *) hp_slot_ptr->private)->capabilities = hpc_ptr->slots[index].slot_cap;
if ((hpc_ptr->slots[index].slot_cap & EBDA_SLOT_133_MAX) == EBDA_SLOT_133_MAX)
......@@ -617,7 +1030,6 @@ static int __init ebda_rsrc_controller (void)
((struct slot *) hp_slot_ptr->private)->number = hpc_ptr->slots[index].slot_num;
((struct slot *) hp_slot_ptr->private)->hotplug_slot = hp_slot_ptr;
rc = ibmphp_hpc_fillhpslotinfo (hp_slot_ptr);
if (rc) {
iounmap (io_mem);
......@@ -631,8 +1043,6 @@ static int __init ebda_rsrc_controller (void)
}
hp_slot_ptr->ops = &ibmphp_hotplug_slot_ops;
pci_hp_register (hp_slot_ptr);
// end of registering ibm slot with hotplug core
list_add (& ((struct slot *)(hp_slot_ptr->private))->ibm_slot_list, &ibmphp_slot_head);
......@@ -642,7 +1052,20 @@ static int __init ebda_rsrc_controller (void)
list_add (&hpc_ptr->ebda_hpc_list, &ebda_hpc_head );
} /* each hpc */
list_for_each (list, &ibmphp_slot_head) {
slot_cur = list_entry (list, struct slot, ibm_slot_list);
snprintf (slot_cur->hotplug_slot->name, 30, "%s", create_file_name (slot_cur));
if (chassis_str)
kfree (chassis_str);
if (rxe_str)
kfree (rxe_str);
pci_hp_register (slot_cur->hotplug_slot);
}
print_ebda_hpc ();
print_ibm_slot ();
return 0;
}
......@@ -682,7 +1105,7 @@ static int __init ebda_rsrc_rsrc (void)
addr += 6;
debug ("rsrc from io type ----\n");
debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %lx end addr: %lx\n",
debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
......@@ -703,7 +1126,7 @@ static int __init ebda_rsrc_rsrc (void)
addr += 10;
debug ("rsrc from mem or pfm ---\n");
debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %lx end addr: %lx\n",
debug ("rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
rsrc_ptr->rsrc_type, rsrc_ptr->bus_num, rsrc_ptr->dev_fun, rsrc_ptr->start_addr, rsrc_ptr->end_addr);
list_add (&rsrc_ptr->ebda_pci_rsrc_list, &ibmphp_ebda_pci_rsrc_head);
......@@ -715,56 +1138,6 @@ static int __init ebda_rsrc_rsrc (void)
return 0;
}
/*
* map info of scalability details and rio details from physical address
*/
static int __init ebda_rio_table(void)
{
u16 offset;
u8 i;
struct scal_detail *scal_detail_ptr;
struct rio_detail *rio_detail_ptr;
offset = rio_table_ptr->offset;
for (i = 0; i < rio_table_ptr->scal_count; i++) {
scal_detail_ptr = kmalloc (sizeof (struct scal_detail), GFP_KERNEL );
if (!scal_detail_ptr )
return -ENOMEM;
memset (scal_detail_ptr, 0, sizeof (struct scal_detail) );
scal_detail_ptr->node_id = readb (io_mem + offset);
scal_detail_ptr->cbar = readl (io_mem+ offset + 1);
scal_detail_ptr->port0_node_connect = readb (io_mem + 5);
scal_detail_ptr->port0_port_connect = readb (io_mem + 6);
scal_detail_ptr->port1_node_connect = readb (io_mem + 7);
scal_detail_ptr->port1_port_connect = readb (io_mem + 8);
scal_detail_ptr->port2_node_connect = readb (io_mem + 9);
scal_detail_ptr->port2_port_connect = readb (io_mem + 10);
debug ("node_id: %x\ncbar: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nport2_node: %x\nport2_port: %x\n", scal_detail_ptr->node_id, scal_detail_ptr->cbar, scal_detail_ptr->port0_node_connect, scal_detail_ptr->port0_port_connect, scal_detail_ptr->port1_node_connect, scal_detail_ptr->port1_port_connect, scal_detail_ptr->port2_node_connect, scal_detail_ptr->port2_port_connect);
// list_add (&scal_detail_ptr->scal_detail_list, &scal_detail_head);
offset += 11;
}
for (i=0; i < rio_table_ptr->riodev_count; i++) {
rio_detail_ptr = kmalloc (sizeof (struct rio_detail), GFP_KERNEL );
if (!rio_detail_ptr )
return -ENOMEM;
memset (rio_detail_ptr, 0, sizeof (struct rio_detail) );
rio_detail_ptr->rio_node_id = readb (io_mem + offset );
rio_detail_ptr->bbar = readl (io_mem + offset + 1);
rio_detail_ptr->rio_type = readb (io_mem + offset + 5);
rio_detail_ptr->owner_id = readb (io_mem + offset + 6);
rio_detail_ptr->port0_node_connect = readb (io_mem + offset + 7);
rio_detail_ptr->port0_port_connect = readb (io_mem + offset + 8);
rio_detail_ptr->port1_node_connect = readb (io_mem + offset + 9);
rio_detail_ptr->port1_port_connect = readb (io_mem + offset + 10);
rio_detail_ptr->first_slot_num = readb (io_mem + offset + 11);
rio_detail_ptr->status = readb (io_mem + offset + 12);
debug ("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status);
offset += 13;
}
return 0;
}
u16 ibmphp_get_total_controllers (void)
{
return hpc_list_ptr->num_ctlrs;
......@@ -830,27 +1203,9 @@ void ibmphp_free_bus_info_queue (void)
}
}
/*
* Calculate the total hot pluggable slots controlled by total hpcs
*/
/*
int ibmphp_get_total_hp_slots (void)
{
struct ebda_hpc *ptr;
int slot_num = 0;
ptr = ebda_hpc_head;
while (ptr != NULL) {
slot_num += ptr->slot_count;
ptr = ptr->next;
}
return slot_num;
}
*/
void ibmphp_free_ebda_hpc_queue (void)
{
struct controller *controller;
struct controller *controller = NULL;
struct list_head *list;
struct list_head *next;
......@@ -872,4 +1227,3 @@ void ibmphp_free_ebda_pci_rsrc_queue (void)
resource = NULL;
}
}
drivers/hotplug/ibmphp_hpc.c
View file @ af6e9e07
......@@ -107,8 +107,8 @@ static struct semaphore sem_exit; // make sure polling thread goes away
//----------------------------------------------------------------------------
// local function prototypes
//----------------------------------------------------------------------------
static u8 ctrl_read (struct controller *, void *, u8);
static u8 ctrl_write (struct controller *, void *, u8, u8);
static u8 i2c_ctrl_read (struct controller *, void *, u8);
static u8 i2c_ctrl_write (struct controller *, void *, u8, u8);
static u8 hpc_writecmdtoindex (u8, u8);
static u8 hpc_readcmdtoindex (u8, u8);
static void get_hpc_access (void);
......@@ -142,12 +142,12 @@ void __init ibmphp_hpc_initvars (void)
}
/*----------------------------------------------------------------------
* Name: ctrl_read
* Name: i2c_ctrl_read
*
* Action: read from HPC over I2C
*
*---------------------------------------------------------------------*/
static u8 ctrl_read (struct controller *ctlr_ptr, void *WPGBbar, u8 index)
static u8 i2c_ctrl_read (struct controller *ctlr_ptr, void *WPGBbar, u8 index)
{
u8 status;
int i;
......@@ -249,13 +249,13 @@ static u8 ctrl_read (struct controller *ctlr_ptr, void *WPGBbar, u8 index)
}
/*----------------------------------------------------------------------
* Name: ctrl_write
* Name: i2c_ctrl_write
*
* Action: write to HPC over I2C
*
* Return 0 or error codes
*---------------------------------------------------------------------*/
static u8 ctrl_write (struct controller *ctlr_ptr, void *WPGBbar, u8 index, u8 cmd)
static u8 i2c_ctrl_write (struct controller *ctlr_ptr, void *WPGBbar, u8 index, u8 cmd)
{
u8 rc;
void *wpg_addr; // base addr + offset
......@@ -351,6 +351,33 @@ static u8 ctrl_write (struct controller *ctlr_ptr, void *WPGBbar, u8 index, u8 c
return (rc);
}
static u8 ctrl_read (struct controller *ctlr, void *base, u8 offset)
{
u8 rc;
switch (ctlr->ctlr_type) {
case 2:
case 4:
rc = i2c_ctrl_read (ctlr, base, offset);
break;
default:
return -ENODEV;
}
return rc;
}
static u8 ctrl_write (struct controller *ctlr, void *base, u8 offset, u8 data)
{
u8 rc = 0;
switch (ctlr->ctlr_type) {
case 2:
case 4:
rc = i2c_ctrl_write(ctlr, base, offset, data);
break;
default:
return -ENODEV;
}
return rc;
}
/*----------------------------------------------------------------------
* Name: hpc_writecmdtoindex()
*
......@@ -449,7 +476,7 @@ static u8 hpc_readcmdtoindex (u8 cmd, u8 index)
*---------------------------------------------------------------------*/
int ibmphp_hpc_readslot (struct slot * pslot, u8 cmd, u8 * pstatus)
{
void *wpg_bbar;
void *wpg_bbar = NULL;
struct controller *ctlr_ptr;
struct list_head *pslotlist;
u8 index, status;
......@@ -491,7 +518,8 @@ int ibmphp_hpc_readslot (struct slot * pslot, u8 cmd, u8 * pstatus)
//--------------------------------------------------------------------
// map physical address to logical address
//--------------------------------------------------------------------
wpg_bbar = ioremap (ctlr_ptr->u.wpeg_ctlr.wpegbbar, WPG_I2C_IOREMAP_SIZE);
if ((ctlr_ptr->ctlr_type == 2) || (ctlr_ptr->ctlr_type == 4))
wpg_bbar = ioremap (ctlr_ptr->u.wpeg_ctlr.wpegbbar, WPG_I2C_IOREMAP_SIZE);
//--------------------------------------------------------------------
// check controller status before reading
......@@ -569,7 +597,11 @@ int ibmphp_hpc_readslot (struct slot * pslot, u8 cmd, u8 * pstatus)
//--------------------------------------------------------------------
// cleanup
//--------------------------------------------------------------------
iounmap (wpg_bbar); // remove physical to logical address mapping
// remove physical to logical address mapping
if ((ctlr_ptr->ctlr_type == 2) || (ctlr_ptr->ctlr_type == 4))
iounmap (wpg_bbar);
free_hpc_access ();
debug_polling ("%s - Exit rc[%d]\n", __FUNCTION__, rc);
......@@ -583,7 +615,7 @@ int ibmphp_hpc_readslot (struct slot * pslot, u8 cmd, u8 * pstatus)
*---------------------------------------------------------------------*/
int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
{
void *wpg_bbar;
void *wpg_bbar = NULL;
struct controller *ctlr_ptr;
u8 index, status;
int busindex;
......@@ -626,12 +658,13 @@ int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
//--------------------------------------------------------------------
// map physical address to logical address
//--------------------------------------------------------------------
wpg_bbar = ioremap (ctlr_ptr->u.wpeg_ctlr.wpegbbar, WPG_I2C_IOREMAP_SIZE);
if ((ctlr_ptr->ctlr_type == 2) || (ctlr_ptr->ctlr_type == 4)) {
wpg_bbar = ioremap (ctlr_ptr->u.wpeg_ctlr.wpegbbar, WPG_I2C_IOREMAP_SIZE);
debug ("%s - ctlr id[%x] physical[%lx] logical[%lx] i2c[%x]\n", __FUNCTION__,
debug ("%s - ctlr id[%x] physical[%lx] logical[%lx] i2c[%x]\n", __FUNCTION__,
ctlr_ptr->ctlr_id, (ulong) (ctlr_ptr->u.wpeg_ctlr.wpegbbar), (ulong) wpg_bbar,
ctlr_ptr->u.wpeg_ctlr.i2c_addr);
}
//--------------------------------------------------------------------
// check controller status before writing
//--------------------------------------------------------------------
......@@ -668,7 +701,10 @@ int ibmphp_hpc_writeslot (struct slot * pslot, u8 cmd)
ctlr_ptr->status = status;
}
// cleanup
iounmap (wpg_bbar); // remove physical to logical address mapping
// remove physical to logical address mapping
if ((ctlr_ptr->ctlr_type == 2) || (ctlr_ptr->ctlr_type == 4))
iounmap (wpg_bbar);
free_hpc_access ();
debug_polling ("%s - Exit rc[%d]\n", __FUNCTION__, rc);
......@@ -701,6 +737,7 @@ void free_hpc_access (void)
void ibmphp_lock_operations (void)
{
down (&semOperations);
to_debug = TRUE;
}
/*----------------------------------------------------------------------
......@@ -710,6 +747,7 @@ void ibmphp_unlock_operations (void)
{
debug ("%s - Entry\n", __FUNCTION__);
up (&semOperations);
to_debug = FALSE;
debug ("%s - Exit\n", __FUNCTION__);
}
......@@ -734,82 +772,86 @@ static void poll_hpc (void)
debug ("%s - Entry\n", __FUNCTION__);
while (!ibmphp_shutdown) {
if (ibmphp_shutdown)
break;
/* try to get the lock to do some kind of harware access */
down (&semOperations);
switch (poll_state) {
case POLL_LATCH_REGISTER:
oldlatchlow = curlatchlow;
ctrl_count = 0x00;
list_for_each (pslotlist, &ibmphp_slot_head) {
if (ctrl_count >= ibmphp_get_total_controllers())
break;
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
if (pslot->ctrl->ctlr_relative_id == ctrl_count) {
ctrl_count++;
if (READ_SLOT_LATCH (pslot->ctrl)) {
rc = ibmphp_hpc_readslot (pslot,
READ_SLOTLATCHLOWREG,
&curlatchlow);
if (oldlatchlow != curlatchlow)
process_changeinlatch (oldlatchlow,
curlatchlow,
pslot->ctrl);
}
case POLL_LATCH_REGISTER:
oldlatchlow = curlatchlow;
ctrl_count = 0x00;
list_for_each (pslotlist, &ibmphp_slot_head) {
if (ctrl_count >= ibmphp_get_total_controllers())
break;
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
if (pslot->ctrl->ctlr_relative_id == ctrl_count) {
ctrl_count++;
if (READ_SLOT_LATCH (pslot->ctrl)) {
rc = ibmphp_hpc_readslot (pslot,
READ_SLOTLATCHLOWREG,
&curlatchlow);
if (oldlatchlow != curlatchlow)
process_changeinlatch (oldlatchlow,
curlatchlow,
pslot->ctrl);
}
}
poll_state = POLL_SLOTS;
break;
case POLL_SLOTS:
list_for_each (pslotlist, &ibmphp_slot_head) {
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
// make a copy of the old status
memcpy ((void *) &myslot, (void *) pslot,
sizeof (struct slot));
rc = ibmphp_hpc_readslot (pslot, READ_ALLSTAT, NULL);
if ((myslot.status != pslot->status)
|| (myslot.ext_status != pslot->ext_status))
process_changeinstatus (pslot, &myslot);
}
++poll_count;
poll_state = POLL_SLEEP;
break;
case POLL_SLOTS:
list_for_each (pslotlist, &ibmphp_slot_head) {
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
// make a copy of the old status
memcpy ((void *) &myslot, (void *) pslot,
sizeof (struct slot));
rc = ibmphp_hpc_readslot (pslot, READ_ALLSTAT, NULL);
if ((myslot.status != pslot->status)
|| (myslot.ext_status != pslot->ext_status))
process_changeinstatus (pslot, &myslot);
}
ctrl_count = 0x00;
list_for_each (pslotlist, &ibmphp_slot_head) {
if (ctrl_count >= ibmphp_get_total_controllers())
break;
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
if (pslot->ctrl->ctlr_relative_id == ctrl_count) {
ctrl_count++;
if (READ_SLOT_LATCH (pslot->ctrl))
rc = ibmphp_hpc_readslot (pslot,
READ_SLOTLATCHLOWREG,
&curlatchlow);
}
}
++poll_count;
poll_state = POLL_SLEEP;
break;
case POLL_SLEEP:
/* don't sleep with a lock on the hardware */
up (&semOperations);
long_delay (POLL_INTERVAL_SEC * HZ);
ctrl_count = 0x00;
list_for_each (pslotlist, &ibmphp_slot_head) {
if (ctrl_count >= ibmphp_get_total_controllers())
break;
pslot = list_entry (pslotlist, struct slot, ibm_slot_list);
if (pslot->ctrl->ctlr_relative_id == ctrl_count) {
ctrl_count++;
if (READ_SLOT_LATCH (pslot->ctrl))
rc = ibmphp_hpc_readslot (pslot,
READ_SLOTLATCHLOWREG,
&curlatchlow);
}
}
++poll_count;
if (poll_count >= POLL_LATCH_CNT) {
poll_count = 0;
poll_state = POLL_SLEEP;
}
if (ibmphp_shutdown)
break;
case POLL_SLEEP:
/* don't sleep with a lock on the hardware */
up (&semOperations);
long_delay (POLL_INTERVAL_SEC * HZ);
down (&semOperations);
down (&semOperations);
if (poll_count >= POLL_LATCH_CNT) {
poll_count = 0;
poll_state = POLL_SLOTS;
} else
poll_state = POLL_LATCH_REGISTER;
break;
}
break;
}
/* give up the harware semaphore */
up (&semOperations);
/* sleep for a short time just for good measure */
set_current_state (TASK_INTERRUPTIBLE);
schedule_timeout (HZ/10);
}
up (&sem_exit);
debug ("%s - Exit\n", __FUNCTION__);
}
......@@ -1070,15 +1112,23 @@ void __exit ibmphp_hpc_stop_poll_thread (void)
debug ("%s - Entry\n", __FUNCTION__);
ibmphp_shutdown = TRUE;
debug ("before locking operations \n");
ibmphp_lock_operations ();
debug ("after locking operations \n");
// wait for poll thread to exit
debug ("before sem_exit down \n");
down (&sem_exit);
debug ("after sem_exit down \n");
// cleanup
debug ("before free_hpc_access \n");
free_hpc_access ();
debug ("after free_hpc_access \n");
ibmphp_unlock_operations ();
debug ("after unlock operations \n");
up (&sem_exit);
debug ("after sem exit up\n");
debug ("%s - Exit\n", __FUNCTION__);
}
......
drivers/hotplug/ibmphp_pci.c
View file @ af6e9e07
......@@ -920,16 +920,30 @@ static int configure_bridge (struct pci_func **func_passed, u8 slotno)
debug ("flag_io = %x, flag_mem = %x, flag_pfmem = %x\n", flag_io, flag_mem, flag_pfmem);
if (flag_io && flag_mem && flag_pfmem) {
bus = kmalloc (sizeof (struct bus_node), GFP_KERNEL);
/* If on bootup, there was a bridged card in this slot,
* then card was removed and ibmphp got unloaded and loaded
* back again, there's no way for us to remove the bus
* struct, so no need to kmalloc, can use existing node
*/
bus = ibmphp_find_res_bus (sec_number);
if (!bus) {
err ("out of system memory \n");
retval = -ENOMEM;
bus = kmalloc (sizeof (struct bus_node), GFP_KERNEL);
if (!bus) {
err ("out of system memory \n");
retval = -ENOMEM;
goto error;
}
memset (bus, 0, sizeof (struct bus_node));
bus->busno = sec_number;
debug ("b4 adding new bus\n");
rc = add_new_bus (bus, io, mem, pfmem, func->busno);
} else if (!(bus->rangeIO) && !(bus->rangeMem) && !(bus->rangePFMem))
rc = add_new_bus (bus, io, mem, pfmem, 0xFF);
else {
err ("expected bus structure not empty? \n");
retval = -EIO;
goto error;
}
memset (bus, 0, sizeof (struct bus_node));
bus->busno = sec_number;
debug ("b4 adding new bus\n");
rc = add_new_bus (bus, io, mem, pfmem, func->busno);
if (rc) {
if (rc == -ENOMEM) {
ibmphp_remove_bus (bus, func->busno);
......@@ -1579,7 +1593,6 @@ int ibmphp_unconfigure_card (struct slot **slot_cur, int the_end)
}
if (sl->func) {
debug ("do we come in here? \n");
cur_func = sl->func;
while (cur_func) {
/* TO DO: WILL MOST LIKELY NEED TO GET RID OF THE BUS STRUCTURE FROM RESOURCES AS WELL */
......@@ -1619,6 +1632,7 @@ int ibmphp_unconfigure_card (struct slot **slot_cur, int the_end)
sl->func = NULL;
*slot_cur = sl;
debug ("%s - exit\n", __FUNCTION__);
return 0;
}
......@@ -1638,14 +1652,15 @@ static int add_new_bus (struct bus_node *bus, struct resource_node *io, struct r
struct bus_node *cur_bus = NULL;
/* Trying to find the parent bus number */
cur_bus = ibmphp_find_res_bus (parent_busno);
if (!cur_bus) {
err ("strange, cannot find bus which is supposed to be at the system... something is terribly wrong...\n");
return -ENODEV;
if (parent_busno != 0xFF) {
cur_bus = ibmphp_find_res_bus (parent_busno);
if (!cur_bus) {
err ("strange, cannot find bus which is supposed to be at the system... something is terribly wrong...\n");
return -ENODEV;
}
list_add (&bus->bus_list, &cur_bus->bus_list);
}
list_add (&bus->bus_list, &cur_bus->bus_list);
if (io) {
io_range = kmalloc (sizeof (struct range_node), GFP_KERNEL);
if (!io_range) {
......@@ -1698,6 +1713,7 @@ static u8 find_sec_number (u8 primary_busno, u8 slotno)
int min, max;
u8 busno;
struct bus_info *bus;
struct bus_node *bus_cur;
bus = ibmphp_find_same_bus_num (primary_busno);
if (!bus) {
......@@ -1712,7 +1728,12 @@ static u8 find_sec_number (u8 primary_busno, u8 slotno)
}
busno = (u8) (slotno - (u8) min);
busno += primary_busno + 0x01;
if (!ibmphp_find_res_bus (busno))
bus_cur = ibmphp_find_res_bus (busno);
/* either there is no such bus number, or there are no ranges, which
* can only happen if we removed the bridged device in previous load
* of the driver, and now only have the skeleton bus struct
*/
if ((!bus_cur) || (!(bus_cur->rangeIO) && !(bus_cur->rangeMem) && !(bus_cur->rangePFMem)))
return busno;
return 0xff;
}
......
drivers/hotplug/ibmphp_res.c
View file @ af6e9e07
......@@ -45,11 +45,17 @@ static void fix_resources (struct bus_node *);
static inline struct bus_node *find_bus_wprev (u8, struct bus_node **, u8);
static LIST_HEAD(gbuses);
LIST_HEAD(ibmphp_res_head);
static struct bus_node * __init alloc_error_bus (struct ebda_pci_rsrc * curr)
static struct bus_node * __init alloc_error_bus (struct ebda_pci_rsrc * curr, u8 busno, int flag)
{
struct bus_node * newbus;
if (!(curr) && !(flag)) {
err ("NULL pointer passed \n");
return NULL;
}
newbus = kmalloc (sizeof (struct bus_node), GFP_KERNEL);
if (!newbus) {
err ("out of system memory \n");
......@@ -57,14 +63,24 @@ static struct bus_node * __init alloc_error_bus (struct ebda_pci_rsrc * curr)
}
memset (newbus, 0, sizeof (struct bus_node));
newbus->busno = curr->bus_num;
if (flag)
newbus->busno = busno;
else
newbus->busno = curr->bus_num;
list_add_tail (&newbus->bus_list, &gbuses);
return newbus;
}
static struct resource_node * __init alloc_resources (struct ebda_pci_rsrc * curr)
{
struct resource_node *rs = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
struct resource_node *rs;
if (!curr) {
err ("NULL passed to allocate \n");
return NULL;
}
rs = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!rs) {
err ("out of system memory \n");
return NULL;
......@@ -299,7 +315,7 @@ int __init ibmphp_rsrc_init (void)
* actually appears...
*/
if (ibmphp_add_resource (new_mem) < 0) {
newbus = alloc_error_bus (curr);
newbus = alloc_error_bus (curr, 0, 0);
if (!newbus)
return -ENOMEM;
newbus->firstMem = new_mem;
......@@ -316,7 +332,7 @@ int __init ibmphp_rsrc_init (void)
new_pfmem->type = PFMEM;
new_pfmem->fromMem = FALSE;
if (ibmphp_add_resource (new_pfmem) < 0) {
newbus = alloc_error_bus (curr);
newbus = alloc_error_bus (curr, 0, 0);
if (!newbus)
return -ENOMEM;
newbus->firstPFMem = new_pfmem;
......@@ -340,7 +356,7 @@ int __init ibmphp_rsrc_init (void)
* range actually appears...
*/
if (ibmphp_add_resource (new_io) < 0) {
newbus = alloc_error_bus (curr);
newbus = alloc_error_bus (curr, 0, 0);
if (!newbus)
return -ENOMEM;
newbus->firstIO = new_io;
......@@ -352,8 +368,6 @@ int __init ibmphp_rsrc_init (void)
}
}
debug ("after the while loop in rsrc_init \n");
list_for_each (tmp, &gbuses) {
bus_cur = list_entry (tmp, struct bus_node, bus_list);
/* This is to get info about PPB resources, since EBDA doesn't put this info into the primary bus info */
......@@ -361,11 +375,9 @@ int __init ibmphp_rsrc_init (void)
if (rc)
return rc;
}
debug ("b4 once_over in rsrc_init \n");
rc = once_over (); /* This is to align ranges (so no -1) */
if (rc)
return rc;
debug ("after once_over in rsrc_init \n");
return 0;
}
......@@ -580,7 +592,7 @@ static void fix_resources (struct bus_node *bus_cur)
* based on their resource type and sorted by their starting addresses. It assigns
* the ptrs to next and nextRange if needed.
*
* Input: 3 diff. resources (nulled out if not needed)
* Input: resource ptr
* Output: ptrs assigned (to the node)
* 0 or -1
*******************************************************************************/
......@@ -593,12 +605,17 @@ int ibmphp_add_resource (struct resource_node *res)
struct resource_node *res_start = NULL;
debug ("%s - enter\n", __FUNCTION__);
if (!res) {
err ("NULL passed to add \n");
return -ENODEV;
}
bus_cur = find_bus_wprev (res->busno, NULL, 0);
if (!bus_cur) {
/* didn't find a bus, smth's wrong!!! */
err ("no bus in the system, either pci_dev's wrong or allocation failed\n");
debug ("no bus in the system, either pci_dev's wrong or allocation failed\n");
return -ENODEV;
}
......@@ -769,6 +786,11 @@ int ibmphp_remove_resource (struct resource_node *res)
struct resource_node *mem_cur;
char * type = "";
if (!res) {
err ("resource to remove is NULL \n");
return -ENODEV;
}
bus_cur = find_bus_wprev (res->busno, NULL, 0);
if (!bus_cur) {
......@@ -797,7 +819,6 @@ int ibmphp_remove_resource (struct resource_node *res)
res_prev = NULL;
while (res_cur) {
/* ???????????DO WE _NEED_ TO BE CHECKING FOR END AS WELL?????????? */
if ((res_cur->start == res->start) && (res_cur->end == res->end))
break;
res_prev = res_cur;
......@@ -981,7 +1002,7 @@ int ibmphp_check_resource (struct resource_node *res, u8 bridge)
if (!bus_cur) {
/* didn't find a bus, smth's wrong!!! */
err ("no bus in the system, either pci_dev's wrong or allocation failed \n");
debug ("no bus in the system, either pci_dev's wrong or allocation failed \n");
return -EINVAL;
}
......@@ -1340,7 +1361,7 @@ int ibmphp_remove_bus (struct bus_node *bus, u8 parent_busno)
prev_bus = find_bus_wprev (parent_busno, NULL, 0);
if (!prev_bus) {
err ("something terribly wrong. Cannot find parent bus to the one to remove\n");
debug ("something terribly wrong. Cannot find parent bus to the one to remove\n");
return -ENODEV;
}
......@@ -1467,13 +1488,18 @@ static int remove_ranges (struct bus_node *bus_cur, struct bus_node *bus_prev)
/*
* find the resource node in the bus
* Input: Resource needed, start address of the resource, type or resource
* Input: Resource needed, start address of the resource, type of resource
*/
int ibmphp_find_resource (struct bus_node *bus, u32 start_address, struct resource_node **res, int flag)
{
struct resource_node *res_cur = NULL;
char * type = "";
if (!bus) {
err ("The bus passed in NULL to find resource \n");
return -ENODEV;
}
switch (flag) {
case IO:
res_cur = bus->firstIO;
......@@ -1514,11 +1540,11 @@ int ibmphp_find_resource (struct bus_node *bus, u32 start_address, struct resour
res_cur = res_cur->next;
}
if (!res_cur) {
err ("SOS...cannot find %s resource in the bus. \n", type);
debug ("SOS...cannot find %s resource in the bus. \n", type);
return -EINVAL;
}
} else {
err ("SOS... cannot find %s resource in the bus. \n", type);
debug ("SOS... cannot find %s resource in the bus. \n", type);
return -EINVAL;
}
}
......@@ -1756,6 +1782,8 @@ void ibmphp_print_test (void)
struct range_node *range;
struct resource_node *res;
struct list_head *tmp;
debug_pci ("*****************START**********************\n");
if ((!list_empty(&gbuses)) && flags) {
err ("The GBUSES is not NULL?!?!?!?!?\n");
......@@ -1764,50 +1792,50 @@ void ibmphp_print_test (void)
list_for_each (tmp, &gbuses) {
bus_cur = list_entry (tmp, struct bus_node, bus_list);
debug ("This is bus # %d. There are \n", bus_cur->busno);
debug ("IORanges = %d\t", bus_cur->noIORanges);
debug ("MemRanges = %d\t", bus_cur->noMemRanges);
debug ("PFMemRanges = %d\n", bus_cur->noPFMemRanges);
debug ("The IO Ranges are as follows:\n");
debug_pci ("This is bus # %d. There are \n", bus_cur->busno);
debug_pci ("IORanges = %d\t", bus_cur->noIORanges);
debug_pci ("MemRanges = %d\t", bus_cur->noMemRanges);
debug_pci ("PFMemRanges = %d\n", bus_cur->noPFMemRanges);
debug_pci ("The IO Ranges are as follows:\n");
if (bus_cur->rangeIO) {
range = bus_cur->rangeIO;
for (i = 0; i < bus_cur->noIORanges; i++) {
debug ("rangeno is %d\n", range->rangeno);
debug ("[%x - %x]\n", range->start, range->end);
debug_pci ("rangeno is %d\n", range->rangeno);
debug_pci ("[%x - %x]\n", range->start, range->end);
range = range->next;
}
}
debug ("The Mem Ranges are as follows:\n");
debug_pci ("The Mem Ranges are as follows:\n");
if (bus_cur->rangeMem) {
range = bus_cur->rangeMem;
for (i = 0; i < bus_cur->noMemRanges; i++) {
debug ("rangeno is %d\n", range->rangeno);
debug ("[%x - %x]\n", range->start, range->end);
debug_pci ("rangeno is %d\n", range->rangeno);
debug_pci ("[%x - %x]\n", range->start, range->end);
range = range->next;
}
}
debug ("The PFMem Ranges are as follows:\n");
debug_pci ("The PFMem Ranges are as follows:\n");
if (bus_cur->rangePFMem) {
range = bus_cur->rangePFMem;
for (i = 0; i < bus_cur->noPFMemRanges; i++) {
debug ("rangeno is %d\n", range->rangeno);
debug ("[%x - %x]\n", range->start, range->end);
debug_pci ("rangeno is %d\n", range->rangeno);
debug_pci ("[%x - %x]\n", range->start, range->end);
range = range->next;
}
}
debug ("The resources on this bus are as follows\n");
debug_pci ("The resources on this bus are as follows\n");
debug ("IO...\n");
debug_pci ("IO...\n");
if (bus_cur->firstIO) {
res = bus_cur->firstIO;
while (res) {
debug ("The range # is %d\n", res->rangeno);
debug ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug ("[%x - %x], len=%x\n", res->start, res->end, res->len);
debug_pci ("The range # is %d\n", res->rangeno);
debug_pci ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug_pci ("[%x - %x], len=%x\n", res->start, res->end, res->len);
if (res->next)
res = res->next;
else if (res->nextRange)
......@@ -1816,13 +1844,13 @@ void ibmphp_print_test (void)
break;
}
}
debug ("Mem...\n");
debug_pci ("Mem...\n");
if (bus_cur->firstMem) {
res = bus_cur->firstMem;
while (res) {
debug ("The range # is %d\n", res->rangeno);
debug ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug ("[%x - %x], len=%x\n", res->start, res->end, res->len);
debug_pci ("The range # is %d\n", res->rangeno);
debug_pci ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug_pci ("[%x - %x], len=%x\n", res->start, res->end, res->len);
if (res->next)
res = res->next;
else if (res->nextRange)
......@@ -1831,13 +1859,13 @@ void ibmphp_print_test (void)
break;
}
}
debug ("PFMem...\n");
debug_pci ("PFMem...\n");
if (bus_cur->firstPFMem) {
res = bus_cur->firstPFMem;
while (res) {
debug ("The range # is %d\n", res->rangeno);
debug ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug ("[%x - %x], len=%x\n", res->start, res->end, res->len);
debug_pci ("The range # is %d\n", res->rangeno);
debug_pci ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug_pci ("[%x - %x], len=%x\n", res->start, res->end, res->len);
if (res->next)
res = res->next;
else if (res->nextRange)
......@@ -1847,23 +1875,53 @@ void ibmphp_print_test (void)
}
}
debug ("PFMemFromMem...\n");
debug_pci ("PFMemFromMem...\n");
if (bus_cur->firstPFMemFromMem) {
res = bus_cur->firstPFMemFromMem;
while (res) {
debug ("The range # is %d\n", res->rangeno);
debug ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug ("[%x - %x], len=%x\n", res->start, res->end, res->len);
debug_pci ("The range # is %d\n", res->rangeno);
debug_pci ("The bus, devfnc is %d, %x\n", res->busno, res->devfunc);
debug_pci ("[%x - %x], len=%x\n", res->start, res->end, res->len);
res = res->next;
}
}
}
debug_pci ("***********************END***********************\n");
}
int static range_exists_already (struct range_node * range, struct bus_node * bus_cur, u8 type)
{
struct range_node * range_cur = NULL;
switch (type) {
case IO:
range_cur = bus_cur->rangeIO;
break;
case MEM:
range_cur = bus_cur->rangeMem;
break;
case PFMEM:
range_cur = bus_cur->rangePFMem;
break;
default:
err ("wrong type passed to find out if range already exists \n");
return -ENODEV;
}
while (range_cur) {
if ((range_cur->start == range->start) && (range_cur->end == range->end))
return 1;
range_cur = range_cur->next;
}
return 0;
}
/* This routine will read the windows for any PPB we have and update the
* range info for the secondary bus, and will also input this info into
* primary bus, since BIOS doesn't. This is for PPB that are in the system
* on bootup
* on bootup. For bridged cards that were added during previous load of the
* driver, only the ranges and the bus structure are added, the devices are
* added from NVRAM
* Input: primary busno
* Returns: none
* Note: this function doesn't take into account IO restrictions etc,
......@@ -1884,6 +1942,8 @@ static int __init update_bridge_ranges (struct bus_node **bus)
struct resource_node *pfmem;
struct range_node *range;
bus_cur = *bus;
if (!bus_cur)
return -ENODEV;
busno = bus_cur->busno;
debug ("inside %s \n", __FUNCTION__);
......@@ -1916,6 +1976,12 @@ static int __init update_bridge_ranges (struct bus_node **bus)
*/
pci_read_config_byte_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_SECONDARY_BUS, &sec_busno);
bus_sec = find_bus_wprev (sec_busno, NULL, 0);
/* this bus structure doesn't exist yet, PPB was configured during previous loading of ibmphp */
if (!bus_sec) {
bus_sec = alloc_error_bus (NULL, sec_busno, 1);
/* the rest will be populated during NVRAM call */
return 0;
}
pci_read_config_byte_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_IO_BASE, &start_io_address);
pci_read_config_byte_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_IO_LIMIT, &end_io_address);
pci_read_config_word_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_IO_BASE_UPPER16, &upper_io_start);
......@@ -1926,9 +1992,7 @@ static int __init update_bridge_ranges (struct bus_node **bus)
end_address |= (upper_io_end << 16);
if ((start_address) && (start_address <= end_address)) {
range = kmalloc (sizeof (struct range_node), GFP_KERNEL);
if (!range) {
err ("out of system memory \n");
return -ENOMEM;
......@@ -1937,33 +2001,39 @@ static int __init update_bridge_ranges (struct bus_node **bus)
range->start = start_address;
range->end = end_address + 0xfff;
if (bus_sec->noIORanges > 0)
add_range (IO, range, bus_sec);
else {
if (bus_sec->noIORanges > 0) {
if (!range_exists_already (range, bus_sec, IO)) {
add_range (IO, range, bus_sec);
++bus_sec->noIORanges;
} else {
kfree (range);
range = NULL;
}
} else {
/* 1st IO Range on the bus */
range->rangeno = 1;
bus_sec->rangeIO = range;
++bus_sec->noIORanges;
}
++bus_sec->noIORanges;
fix_resources (bus_sec);
io = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!io) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
if (ibmphp_find_resource (bus_cur, start_address, &io, IO)) {
io = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!io) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
}
memset (io, 0, sizeof (struct resource_node));
io->type = IO;
io->busno = bus_cur->busno;
io->devfunc = ((device << 3) | (function & 0x7));
io->start = start_address;
io->end = end_address + 0xfff;
io->len = io->end - io->start + 1;
ibmphp_add_resource (io);
}
memset (io, 0, sizeof (struct resource_node));
io->type = IO;
io->busno = bus_cur->busno;
io->devfunc = ((device << 3) | (function & 0x7));
io->start = start_address;
io->end = end_address + 0xfff;
io->len = io->end - io->start + 1;
ibmphp_add_resource (io);
}
}
pci_read_config_word_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_MEMORY_BASE, &start_mem_address);
pci_read_config_word_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_MEMORY_LIMIT, &end_mem_address);
......@@ -1982,31 +2052,39 @@ static int __init update_bridge_ranges (struct bus_node **bus)
range->start = start_address;
range->end = end_address + 0xfffff;
if (bus_sec->noMemRanges > 0)
add_range (MEM, range, bus_sec);
else {
if (bus_sec->noMemRanges > 0) {
if (!range_exists_already (range, bus_sec, MEM)) {
add_range (MEM, range, bus_sec);
++bus_sec->noMemRanges;
} else {
kfree (range);
range = NULL;
}
} else {
/* 1st Mem Range on the bus */
range->rangeno = 1;
bus_sec->rangeMem = range;
++bus_sec->noMemRanges;
}
++bus_sec->noMemRanges;
fix_resources (bus_sec);
mem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!mem) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
if (ibmphp_find_resource (bus_cur, start_address, &mem, MEM)) {
mem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!mem) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
}
memset (mem, 0, sizeof (struct resource_node));
mem->type = MEM;
mem->busno = bus_cur->busno;
mem->devfunc = ((device << 3) | (function & 0x7));
mem->start = start_address;
mem->end = end_address + 0xfffff;
mem->len = mem->end - mem->start + 1;
ibmphp_add_resource (mem);
}
memset (mem, 0, sizeof (struct resource_node));
mem->type = MEM;
mem->busno = bus_cur->busno;
mem->devfunc = ((device << 3) | (function & 0x7));
mem->start = start_address;
mem->end = end_address + 0xfffff;
mem->len = mem->end - mem->start + 1;
ibmphp_add_resource (mem);
}
pci_read_config_word_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_PREF_MEMORY_BASE, &start_mem_address);
pci_read_config_word_nodev (ibmphp_pci_root_ops, busno, device, function, PCI_PREF_MEMORY_LIMIT, &end_mem_address);
......@@ -2030,32 +2108,40 @@ static int __init update_bridge_ranges (struct bus_node **bus)
range->start = start_address;
range->end = end_address + 0xfffff;
if (bus_sec->noPFMemRanges > 0)
add_range (PFMEM, range, bus_sec);
else {
if (bus_sec->noPFMemRanges > 0) {
if (!range_exists_already (range, bus_sec, PFMEM)) {
add_range (PFMEM, range, bus_sec);
++bus_sec->noPFMemRanges;
} else {
kfree (range);
range = NULL;
}
} else {
/* 1st PFMem Range on the bus */
range->rangeno = 1;
bus_sec->rangePFMem = range;
++bus_sec->noPFMemRanges;
}
++bus_sec->noPFMemRanges;
fix_resources (bus_sec);
pfmem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!pfmem) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
if (ibmphp_find_resource (bus_cur, start_address, &pfmem, PFMEM)) {
pfmem = kmalloc (sizeof (struct resource_node), GFP_KERNEL);
if (!pfmem) {
kfree (range);
err ("out of system memory \n");
return -ENOMEM;
}
memset (pfmem, 0, sizeof (struct resource_node));
pfmem->type = PFMEM;
pfmem->busno = bus_cur->busno;
pfmem->devfunc = ((device << 3) | (function & 0x7));
pfmem->start = start_address;
pfmem->end = end_address + 0xfffff;
pfmem->len = pfmem->end - pfmem->start + 1;
pfmem->fromMem = FALSE;
ibmphp_add_resource (pfmem);
}
memset (pfmem, 0, sizeof (struct resource_node));
pfmem->type = PFMEM;
pfmem->busno = bus_cur->busno;
pfmem->devfunc = ((device << 3) | (function & 0x7));
pfmem->start = start_address;
pfmem->end = end_address + 0xfffff;
pfmem->len = pfmem->end - pfmem->start + 1;
pfmem->fromMem = FALSE;
ibmphp_add_resource (pfmem);
}
break;
} /* end of switch */
......
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