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path: root/drivers/pci/hotplug/cpqphp_pci.c
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Diffstat (limited to 'drivers/pci/hotplug/cpqphp_pci.c')
-rw-r--r--drivers/pci/hotplug/cpqphp_pci.c313
1 files changed, 173 insertions, 140 deletions
diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c
index 573a2702fb6..2e96bae3c82 100644
--- a/drivers/pci/hotplug/cpqphp_pci.c
+++ b/drivers/pci/hotplug/cpqphp_pci.c
@@ -178,17 +178,17 @@ int cpqhp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num)
if (!rc)
return !rc;
- // set the Edge Level Control Register (ELCR)
+ /* set the Edge Level Control Register (ELCR) */
temp_word = inb(0x4d0);
temp_word |= inb(0x4d1) << 8;
temp_word |= 0x01 << irq_num;
- // This should only be for x86 as it sets the Edge Level Control Register
- outb((u8) (temp_word & 0xFF), 0x4d0);
- outb((u8) ((temp_word & 0xFF00) >> 8), 0x4d1);
- rc = 0;
- }
+ /* This should only be for x86 as it sets the Edge Level
+ * Control Register
+ */
+ outb((u8) (temp_word & 0xFF), 0x4d0); outb((u8) ((temp_word &
+ 0xFF00) >> 8), 0x4d1); rc = 0; }
return rc;
}
@@ -213,11 +213,11 @@ static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 * dev
ctrl->pci_bus->number = bus_num;
for (tdevice = 0; tdevice < 0xFF; tdevice++) {
- //Scan for access first
+ /* Scan for access first */
if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1)
continue;
dbg("Looking for nonbridge bus_num %d dev_num %d\n", bus_num, tdevice);
- //Yep we got one. Not a bridge ?
+ /* Yep we got one. Not a bridge ? */
if ((work >> 8) != PCI_TO_PCI_BRIDGE_CLASS) {
*dev_num = tdevice;
dbg("found it !\n");
@@ -225,11 +225,11 @@ static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 * dev
}
}
for (tdevice = 0; tdevice < 0xFF; tdevice++) {
- //Scan for access first
+ /* Scan for access first */
if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1)
continue;
dbg("Looking for bridge bus_num %d dev_num %d\n", bus_num, tdevice);
- //Yep we got one. bridge ?
+ /* Yep we got one. bridge ? */
if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(tdevice, 0), PCI_SECONDARY_BUS, &tbus);
dbg("Recurse on bus_num %d tdevice %d\n", tbus, tdevice);
@@ -257,7 +257,7 @@ static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num
len = (PCIIRQRoutingInfoLength->size -
sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
- // Make sure I got at least one entry
+ /* Make sure I got at least one entry */
if (len == 0) {
kfree(PCIIRQRoutingInfoLength );
return -1;
@@ -304,11 +304,14 @@ static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num
int cpqhp_get_bus_dev (struct controller *ctrl, u8 * bus_num, u8 * dev_num, u8 slot)
{
- return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0); //plain (bridges allowed)
+ /* plain (bridges allowed) */
+ return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0);
}
-/* More PCI configuration routines; this time centered around hotplug controller */
+/* More PCI configuration routines; this time centered around hotplug
+ * controller
+ */
/*
@@ -339,12 +342,12 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
int stop_it;
int index;
- // Decide which slots are supported
+ /* Decide which slots are supported */
if (is_hot_plug) {
- //*********************************
- // is_hot_plug is the slot mask
- //*********************************
+ /*
+ * is_hot_plug is the slot mask
+ */
FirstSupported = is_hot_plug >> 4;
LastSupported = FirstSupported + (is_hot_plug & 0x0F) - 1;
} else {
@@ -352,13 +355,13 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
LastSupported = 0x1F;
}
- // Save PCI configuration space for all devices in supported slots
+ /* Save PCI configuration space for all devices in supported slots */
ctrl->pci_bus->number = busnumber;
for (device = FirstSupported; device <= LastSupported; device++) {
ID = 0xFFFFFFFF;
rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID);
- if (ID != 0xFFFFFFFF) { // device in slot
+ if (ID != 0xFFFFFFFF) { /* device in slot */
rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(device, 0), 0x0B, &class_code);
if (rc)
return rc;
@@ -367,7 +370,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
if (rc)
return rc;
- // If multi-function device, set max_functions to 8
+ /* If multi-function device, set max_functions to 8 */
if (header_type & 0x80)
max_functions = 8;
else
@@ -377,18 +380,19 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
do {
DevError = 0;
-
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // P-P Bridge
- // Recurse the subordinate bus
- // get the subordinate bus number
+ if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+ /* Recurse the subordinate bus
+ * get the subordinate bus number
+ */
rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(device, function), PCI_SECONDARY_BUS, &secondary_bus);
if (rc) {
return rc;
} else {
sub_bus = (int) secondary_bus;
- // Save secondary bus cfg spc
- // with this recursive call.
+ /* Save secondary bus cfg spc
+ * with this recursive call.
+ */
rc = cpqhp_save_config(ctrl, sub_bus, 0);
if (rc)
return rc;
@@ -403,7 +407,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
new_slot = cpqhp_slot_find(busnumber, device, index++);
if (!new_slot) {
- // Setup slot structure.
+ /* Setup slot structure. */
new_slot = cpqhp_slot_create(busnumber);
if (new_slot == NULL)
@@ -415,7 +419,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
new_slot->function = (u8) function;
new_slot->is_a_board = 1;
new_slot->switch_save = 0x10;
- // In case of unsupported board
+ /* In case of unsupported board */
new_slot->status = DevError;
new_slot->pci_dev = pci_find_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function);
@@ -429,14 +433,15 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
stop_it = 0;
- // this loop skips to the next present function
- // reading in Class Code and Header type.
+ /* this loop skips to the next present function
+ * reading in Class Code and Header type.
+ */
while ((function < max_functions)&&(!stop_it)) {
rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(device, function), PCI_VENDOR_ID, &ID);
- if (ID == 0xFFFFFFFF) { // nothing there.
+ if (ID == 0xFFFFFFFF) { /* nothing there. */
function++;
- } else { // Something there
+ } else { /* Something there */
rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(device, function), 0x0B, &class_code);
if (rc)
return rc;
@@ -450,9 +455,9 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
}
} while (function < max_functions);
- } // End of IF (device in slot?)
+ } /* End of IF (device in slot?) */
else if (is_hot_plug) {
- // Setup slot structure with entry for empty slot
+ /* Setup slot structure with entry for empty slot */
new_slot = cpqhp_slot_create(busnumber);
if (new_slot == NULL) {
@@ -466,7 +471,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
new_slot->presence_save = 0;
new_slot->switch_save = 0;
}
- } // End of FOR loop
+ } /* End of FOR loop */
return(0);
}
@@ -498,11 +503,11 @@ int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
ctrl->pci_bus->number = new_slot->bus;
pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_VENDOR_ID, &ID);
- if (ID != 0xFFFFFFFF) { // device in slot
+ if (ID != 0xFFFFFFFF) { /* device in slot */
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), 0x0B, &class_code);
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_HEADER_TYPE, &header_type);
- if (header_type & 0x80) // Multi-function device
+ if (header_type & 0x80) /* Multi-function device */
max_functions = 8;
else
max_functions = 1;
@@ -510,19 +515,21 @@ int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
function = 0;
do {
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
- // Recurse the subordinate bus
+ if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+ /* Recurse the subordinate bus */
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_SECONDARY_BUS, &secondary_bus);
sub_bus = (int) secondary_bus;
- // Save the config headers for the secondary bus.
+ /* Save the config headers for the secondary
+ * bus.
+ */
rc = cpqhp_save_config(ctrl, sub_bus, 0);
if (rc)
return(rc);
ctrl->pci_bus->number = new_slot->bus;
- } // End of IF
+ } /* End of IF */
new_slot->status = 0;
@@ -534,15 +541,15 @@ int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
stop_it = 0;
- // this loop skips to the next present function
- // reading in the Class Code and the Header type.
-
+ /* this loop skips to the next present function
+ * reading in the Class Code and the Header type.
+ */
while ((function < max_functions) && (!stop_it)) {
pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_VENDOR_ID, &ID);
- if (ID == 0xFFFFFFFF) { // nothing there.
+ if (ID == 0xFFFFFFFF) { /* nothing there. */
function++;
- } else { // Something there
+ } else { /* Something there */
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), 0x0B, &class_code);
pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_HEADER_TYPE, &header_type);
@@ -552,7 +559,7 @@ int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
}
} while (function < max_functions);
- } // End of IF (device in slot?)
+ } /* End of IF (device in slot?) */
else {
return 2;
}
@@ -590,11 +597,10 @@ int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
- // Check for Bridge
+ /* Check for Bridge */
pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
- // PCI-PCI Bridge
pci_bus_read_config_byte (pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
sub_bus = (int) secondary_bus;
@@ -610,23 +616,27 @@ int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
}
pci_bus->number = func->bus;
- //FIXME: this loop is duplicated in the non-bridge case. The two could be rolled together
- // Figure out IO and memory base lengths
+ /* FIXME: this loop is duplicated in the non-bridge
+ * case. The two could be rolled together Figure out
+ * IO and memory base lengths
+ */
for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
temp_register = 0xFFFFFFFF;
pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
pci_bus_read_config_dword (pci_bus, devfn, cloop, &base);
-
- if (base) { // If this register is implemented
+ /* If this register is implemented */
+ if (base) {
if (base & 0x01L) {
- // IO base
- // set base = amount of IO space requested
+ /* IO base
+ * set base = amount of IO space
+ * requested
+ */
base = base & 0xFFFFFFFE;
base = (~base) + 1;
type = 1;
} else {
- // memory base
+ /* memory base */
base = base & 0xFFFFFFF0;
base = (~base) + 1;
@@ -637,32 +647,36 @@ int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
type = 0;
}
- // Save information in slot structure
+ /* Save information in slot structure */
func->base_length[(cloop - 0x10) >> 2] =
base;
func->base_type[(cloop - 0x10) >> 2] = type;
- } // End of base register loop
-
+ } /* End of base register loop */
- } else if ((header_type & 0x7F) == 0x00) { // PCI-PCI Bridge
- // Figure out IO and memory base lengths
+ } else if ((header_type & 0x7F) == 0x00) {
+ /* Figure out IO and memory base lengths */
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
temp_register = 0xFFFFFFFF;
pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
pci_bus_read_config_dword (pci_bus, devfn, cloop, &base);
- if (base) { // If this register is implemented
+ /* If this register is implemented */
+ if (base) {
if (base & 0x01L) {
- // IO base
- // base = amount of IO space requested
+ /* IO base
+ * base = amount of IO space
+ * requested
+ */
base = base & 0xFFFFFFFE;
base = (~base) + 1;
type = 1;
} else {
- // memory base
- // base = amount of memory space requested
+ /* memory base
+ * base = amount of memory
+ * space requested
+ */
base = base & 0xFFFFFFF0;
base = (~base) + 1;
@@ -673,16 +687,16 @@ int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
type = 0;
}
- // Save information in slot structure
+ /* Save information in slot structure */
func->base_length[(cloop - 0x10) >> 2] = base;
func->base_type[(cloop - 0x10) >> 2] = type;
- } // End of base register loop
+ } /* End of base register loop */
- } else { // Some other unknown header type
+ } else { /* Some other unknown header type */
}
- // find the next device in this slot
+ /* find the next device in this slot */
func = cpqhp_slot_find(func->bus, func->device, index++);
}
@@ -728,18 +742,18 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
- // Save the command register
+ /* Save the command register */
pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &save_command);
- // disable card
+ /* disable card */
command = 0x00;
pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
- // Check for Bridge
+ /* Check for Bridge */
pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
- // Clear Bridge Control Register
+ if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+ /* Clear Bridge Control Register */
command = 0x00;
pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, command);
pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
@@ -755,7 +769,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
bus_node->next = func->bus_head;
func->bus_head = bus_node;
- // Save IO base and Limit registers
+ /* Save IO base and Limit registers */
pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_BASE, &b_base);
pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_LIMIT, &b_length);
@@ -771,7 +785,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
func->io_head = io_node;
}
- // Save memory base and Limit registers
+ /* Save memory base and Limit registers */
pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_BASE, &w_base);
pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, &w_length);
@@ -787,7 +801,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
func->mem_head = mem_node;
}
- // Save prefetchable memory base and Limit registers
+ /* Save prefetchable memory base and Limit registers */
pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, &w_base);
pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &w_length);
@@ -802,7 +816,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
p_mem_node->next = func->p_mem_head;
func->p_mem_head = p_mem_node;
}
- // Figure out IO and memory base lengths
+ /* Figure out IO and memory base lengths */
for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
pci_bus_read_config_dword (pci_bus, devfn, cloop, &save_base);
@@ -812,11 +826,14 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
temp_register = base;
- if (base) { // If this register is implemented
+ /* If this register is implemented */
+ if (base) {
if (((base & 0x03L) == 0x01)
&& (save_command & 0x01)) {
- // IO base
- // set temp_register = amount of IO space requested
+ /* IO base
+ * set temp_register = amount
+ * of IO space requested
+ */
temp_register = base & 0xFFFFFFFE;
temp_register = (~temp_register) + 1;
@@ -834,7 +851,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
if (((base & 0x0BL) == 0x08)
&& (save_command & 0x02)) {
- // prefetchable memory base
+ /* prefetchable memory base */
temp_register = base & 0xFFFFFFF0;
temp_register = (~temp_register) + 1;
@@ -851,7 +868,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
if (((base & 0x0BL) == 0x00)
&& (save_command & 0x02)) {
- // prefetchable memory base
+ /* prefetchable memory base */
temp_register = base & 0xFFFFFFF0;
temp_register = (~temp_register) + 1;
@@ -868,9 +885,10 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
return(1);
}
- } // End of base register loop
- } else if ((header_type & 0x7F) == 0x00) { // Standard header
- // Figure out IO and memory base lengths
+ } /* End of base register loop */
+ /* Standard header */
+ } else if ((header_type & 0x7F) == 0x00) {
+ /* Figure out IO and memory base lengths */
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
pci_bus_read_config_dword(pci_bus, devfn, cloop, &save_base);
@@ -880,11 +898,14 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
temp_register = base;
- if (base) { // If this register is implemented
+ /* If this register is implemented */
+ if (base) {
if (((base & 0x03L) == 0x01)
&& (save_command & 0x01)) {
- // IO base
- // set temp_register = amount of IO space requested
+ /* IO base
+ * set temp_register = amount
+ * of IO space requested
+ */
temp_register = base & 0xFFFFFFFE;
temp_register = (~temp_register) + 1;
@@ -901,7 +922,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
if (((base & 0x0BL) == 0x08)
&& (save_command & 0x02)) {
- // prefetchable memory base
+ /* prefetchable memory base */
temp_register = base & 0xFFFFFFF0;
temp_register = (~temp_register) + 1;
@@ -918,7 +939,7 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
if (((base & 0x0BL) == 0x00)
&& (save_command & 0x02)) {
- // prefetchable memory base
+ /* prefetchable memory base */
temp_register = base & 0xFFFFFFF0;
temp_register = (~temp_register) + 1;
@@ -935,11 +956,12 @@ int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
} else
return(1);
}
- } // End of base register loop
- } else { // Some other unknown header type
+ } /* End of base register loop */
+ /* Some other unknown header type */
+ } else {
}
- // find the next device in this slot
+ /* find the next device in this slot */
func = cpqhp_slot_find(func->bus, func->device, index++);
}
@@ -975,16 +997,17 @@ int cpqhp_configure_board(struct controller *ctrl, struct pci_func * func)
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
- // Start at the top of config space so that the control
- // registers are programmed last
+ /* Start at the top of config space so that the control
+ * registers are programmed last
+ */
for (cloop = 0x3C; cloop > 0; cloop -= 4) {
pci_bus_write_config_dword (pci_bus, devfn, cloop, func->config_space[cloop >> 2]);
}
pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
- // If this is a bridge device, restore subordinate devices
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
+ /* If this is a bridge device, restore subordinate devices */
+ if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
pci_bus_read_config_byte (pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
sub_bus = (int) secondary_bus;
@@ -1000,8 +1023,9 @@ int cpqhp_configure_board(struct controller *ctrl, struct pci_func * func)
}
} else {
- // Check all the base Address Registers to make sure
- // they are the same. If not, the board is different.
+ /* Check all the base Address Registers to make sure
+ * they are the same. If not, the board is different.
+ */
for (cloop = 16; cloop < 40; cloop += 4) {
pci_bus_read_config_dword (pci_bus, devfn, cloop, &temp);
@@ -1058,27 +1082,28 @@ int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func)
pci_bus_read_config_dword (pci_bus, devfn, PCI_VENDOR_ID, &temp_register);
- // No adapter present
+ /* No adapter present */
if (temp_register == 0xFFFFFFFF)
return(NO_ADAPTER_PRESENT);
if (temp_register != func->config_space[0])
return(ADAPTER_NOT_SAME);
- // Check for same revision number and class code
+ /* Check for same revision number and class code */
pci_bus_read_config_dword (pci_bus, devfn, PCI_CLASS_REVISION, &temp_register);
- // Adapter not the same
+ /* Adapter not the same */
if (temp_register != func->config_space[0x08 >> 2])
return(ADAPTER_NOT_SAME);
- // Check for Bridge
+ /* Check for Bridge */
pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
- // In order to continue checking, we must program the
- // bus registers in the bridge to respond to accesses
- // for it's subordinate bus(es)
+ if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+ /* In order to continue checking, we must program the
+ * bus registers in the bridge to respond to accesses
+ * for its subordinate bus(es)
+ */
temp_register = func->config_space[0x18 >> 2];
pci_bus_write_config_dword (pci_bus, devfn, PCI_PRIMARY_BUS, temp_register);
@@ -1096,35 +1121,39 @@ int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func)
}
}
- // Check to see if it is a standard config header
+ /* Check to see if it is a standard config header */
else if ((header_type & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
- // Check subsystem vendor and ID
+ /* Check subsystem vendor and ID */
pci_bus_read_config_dword (pci_bus, devfn, PCI_SUBSYSTEM_VENDOR_ID, &temp_register);
if (temp_register != func->config_space[0x2C >> 2]) {
- // If it's a SMART-2 and the register isn't filled
- // in, ignore the difference because
- // they just have an old rev of the firmware
-
+ /* If it's a SMART-2 and the register isn't
+ * filled in, ignore the difference because
+ * they just have an old rev of the firmware
+ */
if (!((func->config_space[0] == 0xAE100E11)
&& (temp_register == 0x00L)))
return(ADAPTER_NOT_SAME);
}
- // Figure out IO and memory base lengths
+ /* Figure out IO and memory base lengths */
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
temp_register = 0xFFFFFFFF;
pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
pci_bus_read_config_dword (pci_bus, devfn, cloop, &base);
- if (base) { // If this register is implemented
+
+ /* If this register is implemented */
+ if (base) {
if (base & 0x01L) {
- // IO base
- // set base = amount of IO space requested
+ /* IO base
+ * set base = amount of IO
+ * space requested
+ */
base = base & 0xFFFFFFFE;
base = (~base) + 1;
type = 1;
} else {
- // memory base
+ /* memory base */
base = base & 0xFFFFFFF0;
base = (~base) + 1;
@@ -1135,23 +1164,24 @@ int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func)
type = 0;
}
- // Check information in slot structure
+ /* Check information in slot structure */
if (func->base_length[(cloop - 0x10) >> 2] != base)
return(ADAPTER_NOT_SAME);
if (func->base_type[(cloop - 0x10) >> 2] != type)
return(ADAPTER_NOT_SAME);
- } // End of base register loop
+ } /* End of base register loop */
- } // End of (type 0 config space) else
+ } /* End of (type 0 config space) else */
else {
- // this is not a type 0 or 1 config space header so
- // we don't know how to do it
+ /* this is not a type 0 or 1 config space header so
+ * we don't know how to do it
+ */
return(DEVICE_TYPE_NOT_SUPPORTED);
}
- // Get the next function
+ /* Get the next function */
func = cpqhp_slot_find(func->bus, func->device, index++);
}
@@ -1190,7 +1220,7 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
if (rom_resource_table == NULL) {
return -ENODEV;
}
- // Sum all resources and setup resource maps
+ /* Sum all resources and setup resource maps */
unused_IRQ = readl(rom_resource_table + UNUSED_IRQ);
dbg("unused_IRQ = %x\n", unused_IRQ);
@@ -1262,13 +1292,13 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
dev_func, io_base, io_length, mem_base, mem_length, pre_mem_base, pre_mem_length,
primary_bus, secondary_bus, max_bus);
- // If this entry isn't for our controller's bus, ignore it
+ /* If this entry isn't for our controller's bus, ignore it */
if (primary_bus != ctrl->bus) {
i--;
one_slot += sizeof (struct slot_rt);
continue;
}
- // find out if this entry is for an occupied slot
+ /* find out if this entry is for an occupied slot */
ctrl->pci_bus->number = primary_bus;
pci_bus_read_config_dword (ctrl->pci_bus, dev_func, PCI_VENDOR_ID, &temp_dword);
dbg("temp_D_word = %x\n", temp_dword);
@@ -1282,13 +1312,13 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
func = cpqhp_slot_find(primary_bus, dev_func >> 3, index++);
}
- // If we can't find a match, skip this table entry
+ /* If we can't find a match, skip this table entry */
if (!func) {
i--;
one_slot += sizeof (struct slot_rt);
continue;
}
- // this may not work and shouldn't be used
+ /* this may not work and shouldn't be used */
if (secondary_bus != primary_bus)
bridged_slot = 1;
else
@@ -1301,7 +1331,7 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
}
- // If we've got a valid IO base, use it
+ /* If we've got a valid IO base, use it */
temp_dword = io_base + io_length;
@@ -1325,7 +1355,7 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
}
}
- // If we've got a valid memory base, use it
+ /* If we've got a valid memory base, use it */
temp_dword = mem_base + mem_length;
if ((mem_base) && (temp_dword < 0x10000)) {
mem_node = kmalloc(sizeof(*mem_node), GFP_KERNEL);
@@ -1348,8 +1378,9 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
}
}
- // If we've got a valid prefetchable memory base, and
- // the base + length isn't greater than 0xFFFF
+ /* If we've got a valid prefetchable memory base, and
+ * the base + length isn't greater than 0xFFFF
+ */
temp_dword = pre_mem_base + pre_mem_length;
if ((pre_mem_base) && (temp_dword < 0x10000)) {
p_mem_node = kmalloc(sizeof(*p_mem_node), GFP_KERNEL);
@@ -1372,9 +1403,10 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
}
}
- // If we've got a valid bus number, use it
- // The second condition is to ignore bus numbers on
- // populated slots that don't have PCI-PCI bridges
+ /* If we've got a valid bus number, use it
+ * The second condition is to ignore bus numbers on
+ * populated slots that don't have PCI-PCI bridges
+ */
if (secondary_bus && (secondary_bus != primary_bus)) {
bus_node = kmalloc(sizeof(*bus_node), GFP_KERNEL);
if (!bus_node)
@@ -1398,8 +1430,9 @@ int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_st
one_slot += sizeof (struct slot_rt);
}
- // If all of the following fail, we don't have any resources for
- // hot plug add
+ /* If all of the following fail, we don't have any resources for
+ * hot plug add
+ */
rc = 1;
rc &= cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
rc &= cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 03:48:47 +0000