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path: root/drivers/pci/hotplug/cpqphp_nvram.c
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Diffstat (limited to 'drivers/pci/hotplug/cpqphp_nvram.c')
-rw-r--r--drivers/pci/hotplug/cpqphp_nvram.c97
1 files changed, 51 insertions, 46 deletions
diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c
index cb174888002b..76ba8a1c774d 100644
--- a/drivers/pci/hotplug/cpqphp_nvram.c
+++ b/drivers/pci/hotplug/cpqphp_nvram.c
@@ -94,12 +94,13 @@ static u8 evbuffer[1024];
static void __iomem *compaq_int15_entry_point;
-static spinlock_t int15_lock; /* lock for ordering int15_bios_call() */
+/* lock for ordering int15_bios_call() */
+static spinlock_t int15_lock;
/* This is a series of function that deals with
- setting & getting the hotplug resource table in some environment variable.
-*/
+ * setting & getting the hotplug resource table in some environment variable.
+ */
/*
* We really shouldn't be doing this unless there is a _very_ good reason to!!!
@@ -113,7 +114,7 @@ static u32 add_byte( u32 **p_buffer, u8 value, u32 *used, u32 *avail)
if ((*used + 1) > *avail)
return(1);
-
+
*((u8*)*p_buffer) = value;
tByte = (u8**)p_buffer;
(*tByte)++;
@@ -170,10 +171,10 @@ static u32 access_EV (u16 operation, u8 *ev_name, u8 *buffer, u32 *buf_size)
unsigned long flags;
int op = operation;
int ret_val;
-
+
if (!compaq_int15_entry_point)
return -ENODEV;
-
+
spin_lock_irqsave(&int15_lock, flags);
__asm__ (
"xorl %%ebx,%%ebx\n" \
@@ -187,7 +188,7 @@ static u32 access_EV (u16 operation, u8 *ev_name, u8 *buffer, u32 *buf_size)
"D" (buffer), "m" (compaq_int15_entry_point)
: "%ebx", "%edx");
spin_unlock_irqrestore(&int15_lock, flags);
-
+
return((ret_val & 0xFF00) >> 8);
}
@@ -210,14 +211,16 @@ static int load_HRT (void __iomem *rom_start)
available = 1024;
- // Now load the EV
+ /* Now load the EV */
temp_dword = available;
rc = access_EV(READ_EV, "CQTHPS", evbuffer, &temp_dword);
evbuffer_length = temp_dword;
- // We're maintaining the resource lists so write FF to invalidate old info
+ /* We're maintaining the resource lists so write FF to invalidate old
+ * info
+ */
temp_dword = 1;
rc = access_EV(WRITE_EV, "CQTHPS", &temp_byte, &temp_dword);
@@ -263,13 +266,13 @@ static u32 store_HRT (void __iomem *rom_start)
p_EV_header = (struct ev_hrt_header *) pFill;
ctrl = cpqhp_ctrl_list;
-
- // The revision of this structure
+
+ /* The revision of this structure */
rc = add_byte( &pFill, 1 + ctrl->push_flag, &usedbytes, &available);
if (rc)
return(rc);
- // The number of controllers
+ /* The number of controllers */
rc = add_byte( &pFill, 1, &usedbytes, &available);
if (rc)
return(rc);
@@ -279,27 +282,27 @@ static u32 store_HRT (void __iomem *rom_start)
numCtrl++;
- // The bus number
+ /* The bus number */
rc = add_byte( &pFill, ctrl->bus, &usedbytes, &available);
if (rc)
return(rc);
- // The device Number
+ /* The device Number */
rc = add_byte( &pFill, PCI_SLOT(ctrl->pci_dev->devfn), &usedbytes, &available);
if (rc)
return(rc);
- // The function Number
+ /* The function Number */
rc = add_byte( &pFill, PCI_FUNC(ctrl->pci_dev->devfn), &usedbytes, &available);
if (rc)
return(rc);
- // Skip the number of available entries
+ /* Skip the number of available entries */
rc = add_dword( &pFill, 0, &usedbytes, &available);
if (rc)
return(rc);
- // Figure out memory Available
+ /* Figure out memory Available */
resNode = ctrl->mem_head;
@@ -308,12 +311,12 @@ static u32 store_HRT (void __iomem *rom_start)
while (resNode) {
loop ++;
- // base
+ /* base */
rc = add_dword( &pFill, resNode->base, &usedbytes, &available);
if (rc)
return(rc);
- // length
+ /* length */
rc = add_dword( &pFill, resNode->length, &usedbytes, &available);
if (rc)
return(rc);
@@ -321,10 +324,10 @@ static u32 store_HRT (void __iomem *rom_start)
resNode = resNode->next;
}
- // Fill in the number of entries
+ /* Fill in the number of entries */
p_ev_ctrl->mem_avail = loop;
- // Figure out prefetchable memory Available
+ /* Figure out prefetchable memory Available */
resNode = ctrl->p_mem_head;
@@ -333,12 +336,12 @@ static u32 store_HRT (void __iomem *rom_start)
while (resNode) {
loop ++;
- // base
+ /* base */
rc = add_dword( &pFill, resNode->base, &usedbytes, &available);
if (rc)
return(rc);
- // length
+ /* length */
rc = add_dword( &pFill, resNode->length, &usedbytes, &available);
if (rc)
return(rc);
@@ -346,10 +349,10 @@ static u32 store_HRT (void __iomem *rom_start)
resNode = resNode->next;
}
- // Fill in the number of entries
+ /* Fill in the number of entries */
p_ev_ctrl->p_mem_avail = loop;
- // Figure out IO Available
+ /* Figure out IO Available */
resNode = ctrl->io_head;
@@ -358,12 +361,12 @@ static u32 store_HRT (void __iomem *rom_start)
while (resNode) {
loop ++;
- // base
+ /* base */
rc = add_dword( &pFill, resNode->base, &usedbytes, &available);
if (rc)
return(rc);
- // length
+ /* length */
rc = add_dword( &pFill, resNode->length, &usedbytes, &available);
if (rc)
return(rc);
@@ -371,10 +374,10 @@ static u32 store_HRT (void __iomem *rom_start)
resNode = resNode->next;
}
- // Fill in the number of entries
+ /* Fill in the number of entries */
p_ev_ctrl->io_avail = loop;
- // Figure out bus Available
+ /* Figure out bus Available */
resNode = ctrl->bus_head;
@@ -383,12 +386,12 @@ static u32 store_HRT (void __iomem *rom_start)
while (resNode) {
loop ++;
- // base
+ /* base */
rc = add_dword( &pFill, resNode->base, &usedbytes, &available);
if (rc)
return(rc);
- // length
+ /* length */
rc = add_dword( &pFill, resNode->length, &usedbytes, &available);
if (rc)
return(rc);
@@ -396,15 +399,15 @@ static u32 store_HRT (void __iomem *rom_start)
resNode = resNode->next;
}
- // Fill in the number of entries
+ /* Fill in the number of entries */
p_ev_ctrl->bus_avail = loop;
ctrl = ctrl->next;
}
-
+
p_EV_header->num_of_ctrl = numCtrl;
- // Now store the EV
+ /* Now store the EV */
temp_dword = usedbytes;
@@ -449,20 +452,21 @@ int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
struct ev_hrt_header *p_EV_header;
if (!evbuffer_init) {
- // Read the resource list information in from NVRAM
+ /* Read the resource list information in from NVRAM */
if (load_HRT(rom_start))
memset (evbuffer, 0, 1024);
evbuffer_init = 1;
}
- // If we saved information in NVRAM, use it now
+ /* If we saved information in NVRAM, use it now */
p_EV_header = (struct ev_hrt_header *) evbuffer;
- // The following code is for systems where version 1.0 of this
- // driver has been loaded, but doesn't support the hardware.
- // In that case, the driver would incorrectly store something
- // in NVRAM.
+ /* The following code is for systems where version 1.0 of this
+ * driver has been loaded, but doesn't support the hardware.
+ * In that case, the driver would incorrectly store something
+ * in NVRAM.
+ */
if ((p_EV_header->Version == 2) ||
((p_EV_header->Version == 1) && !ctrl->push_flag)) {
p_byte = &(p_EV_header->next);
@@ -479,7 +483,7 @@ int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
function = p_ev_ctrl->function;
while ((bus != ctrl->bus) ||
- (device != PCI_SLOT(ctrl->pci_dev->devfn)) ||
+ (device != PCI_SLOT(ctrl->pci_dev->devfn)) ||
(function != PCI_FUNC(ctrl->pci_dev->devfn))) {
nummem = p_ev_ctrl->mem_avail;
numpmem = p_ev_ctrl->p_mem_avail;
@@ -491,7 +495,7 @@ int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
if (p_byte > ((u8*)p_EV_header + evbuffer_length))
return 2;
- // Skip forward to the next entry
+ /* Skip forward to the next entry */
p_byte += (nummem + numpmem + numio + numbus) * 8;
if (p_byte > ((u8*)p_EV_header + evbuffer_length))
@@ -629,8 +633,9 @@ int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
ctrl->bus_head = bus_node;
}
- // 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));
@@ -640,14 +645,14 @@ int compaq_nvram_load (void __iomem *rom_start, struct controller *ctrl)
if (rc)
return(rc);
} else {
- if ((evbuffer[0] != 0) && (!ctrl->push_flag))
+ if ((evbuffer[0] != 0) && (!ctrl->push_flag))
return 1;
}
return 0;
}
-
+
int compaq_nvram_store (void __iomem *rom_start)
{
int rc = 1;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.