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authorStephen Rothwell <sfr@canb.auug.org.au>2007-12-07 16:09:18 +1100
committerPaul Mackerras <paulus@samba.org>2007-12-11 13:46:08 +1100
commit1be9ad650986a87c25686abda97bdea330359708 (patch)
tree8a4b98534bdbd9e45f524d5b4990a77822d61f46 /arch/powerpc
parentcd9afb34ed7e7fd3d1eb892b606019e032b0888b (diff)
[POWERPC] iSeries: Clean up and simplify vdpinfo.c
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/iseries/vpdinfo.c100
1 files changed, 46 insertions, 54 deletions
diff --git a/arch/powerpc/platforms/iseries/vpdinfo.c b/arch/powerpc/platforms/iseries/vpdinfo.c
index f9415bf0151..aec82e36557 100644
--- a/arch/powerpc/platforms/iseries/vpdinfo.c
+++ b/arch/powerpc/platforms/iseries/vpdinfo.c
@@ -82,62 +82,56 @@ struct slot_map {
static void __init iseries_parse_slot_area(struct slot_map *map, int len,
HvAgentId agent, u8 *phb, char card[4])
{
- int slot_map_len = len;
- struct slot_map *slot_map = map;
-
/*
* Parse Slot label until we find the one requested
*/
- while (slot_map_len > 0) {
- if (slot_map->agent == agent) {
+ while (len > 0) {
+ if (map->agent == agent) {
/*
* If Phb wasn't found, grab the entry first one found.
*/
if (*phb == 0xff)
- *phb = slot_map->phb;
+ *phb = map->phb;
/* Found it, extract the data. */
- if (slot_map->phb == *phb) {
- memcpy(card, &slot_map->card_location, 3);
+ if (map->phb == *phb) {
+ memcpy(card, &map->card_location, 3);
card[3] = 0;
break;
}
}
/* Point to the next Slot */
- slot_map = (struct slot_map *)((char *)slot_map + SLOT_ENTRY_SIZE);
- slot_map_len -= SLOT_ENTRY_SIZE;
+ map = (struct slot_map *)((char *)map + SLOT_ENTRY_SIZE);
+ len -= SLOT_ENTRY_SIZE;
}
}
/*
* Parse the Mfg Area
*/
-static void __init iseries_parse_mfg_area(u8 *area, int len,
- HvAgentId agent, u8 *phb,
- u8 *frame, char card[4])
+static void __init iseries_parse_mfg_area(struct mfg_vpd_area *area, int len,
+ HvAgentId agent, u8 *phb, u8 *frame, char card[4])
{
- struct mfg_vpd_area *mfg_area = (struct mfg_vpd_area *)area;
- int mfg_area_len = len;
u16 slot_map_fmt = 0;
/* Parse Mfg Data */
- while (mfg_area_len > 0) {
- int mfg_tag_len = mfg_area->length;
+ while (len > 0) {
+ int mfg_tag_len = area->length;
/* Frame ID (FI 4649020310 ) */
- if (mfg_area->tag == VPD_FRU_FRAME_ID)
- *frame = mfg_area->data1;
+ if (area->tag == VPD_FRU_FRAME_ID)
+ *frame = area->data1;
/* Slot Map Format (MF 4D46020004 ) */
- else if (mfg_area->tag == VPD_SLOT_MAP_FORMAT)
- slot_map_fmt = (mfg_area->data1 * 256)
- + mfg_area->data2;
+ else if (area->tag == VPD_SLOT_MAP_FORMAT)
+ slot_map_fmt = (area->data1 * 256)
+ + area->data2;
/* Slot Map (SM 534D90 */
- else if (mfg_area->tag == VPD_SLOT_MAP) {
+ else if (area->tag == VPD_SLOT_MAP) {
struct slot_map *slot_map;
if (slot_map_fmt == 0x1004)
- slot_map = (struct slot_map *)((char *)mfg_area
+ slot_map = (struct slot_map *)((char *)area
+ MFG_ENTRY_SIZE + 1);
else
- slot_map = (struct slot_map *)((char *)mfg_area
+ slot_map = (struct slot_map *)((char *)area
+ MFG_ENTRY_SIZE);
iseries_parse_slot_area(slot_map, mfg_tag_len,
agent, phb, card);
@@ -146,9 +140,9 @@ static void __init iseries_parse_mfg_area(u8 *area, int len,
* Point to the next Mfg Area
* Use defined size, sizeof give wrong answer
*/
- mfg_area = (struct mfg_vpd_area *)((char *)mfg_area + mfg_tag_len
+ area = (struct mfg_vpd_area *)((char *)area + mfg_tag_len
+ MFG_ENTRY_SIZE);
- mfg_area_len -= (mfg_tag_len + MFG_ENTRY_SIZE);
+ len -= (mfg_tag_len + MFG_ENTRY_SIZE);
}
}
@@ -156,48 +150,46 @@ static void __init iseries_parse_mfg_area(u8 *area, int len,
* Look for "BUS".. Data is not Null terminated.
* PHBID of 0xFF indicates PHB was not found in VPD Data.
*/
-static int __init iseries_parse_phbid(u8 *area, int len)
+static u8 __init iseries_parse_phbid(u8 *area, int len)
{
- u8 *phb_ptr = area;
- int data_len = len;
- char phb = 0xFF;
-
- while (data_len > 0) {
- if ((*phb_ptr == 'B') && (*(phb_ptr + 1) == 'U')
- && (*(phb_ptr + 2) == 'S')) {
- phb_ptr += 3;
- while (*phb_ptr == ' ')
- ++phb_ptr;
- phb = (*phb_ptr & 0x0F);
- break;
+ while (len > 0) {
+ if ((*area == 'B') && (*(area + 1) == 'U')
+ && (*(area + 2) == 'S')) {
+ area += 3;
+ while (*area == ' ')
+ area++;
+ return *area & 0x0F;
}
- ++phb_ptr;
- --data_len;
+ area++;
+ len--;
}
- return phb;
+ return 0xff;
}
/*
* Parse out the VPD Areas
*/
-static void __init iseries_parse_vpd(u8 *data, int vpd_data_len,
+static void __init iseries_parse_vpd(u8 *data, int data_len,
HvAgentId agent, u8 *frame, char card[4])
{
- u8 *tag_ptr = data;
- int data_len = vpd_data_len - 3;
u8 phb = 0xff;
- while ((*tag_ptr != VPD_END_OF_AREA) && (data_len > 0)) {
- int len = *(tag_ptr + 1) + (*(tag_ptr + 2) * 256);
- u8 *area = tag_ptr + 3;
+ while (data_len > 0) {
+ int len;
+ u8 tag = *data;
- if (*tag_ptr == VPD_ID_STRING)
- phb = iseries_parse_phbid(area, len);
- else if (*tag_ptr == VPD_VENDOR_AREA)
- iseries_parse_mfg_area(area, len,
+ if (tag == VPD_END_OF_AREA)
+ break;
+ len = *(data + 1) + (*(data + 2) * 256);
+ data += 3;
+ data_len -= 3;
+ if (tag == VPD_ID_STRING)
+ phb = iseries_parse_phbid(data, len);
+ else if (tag == VPD_VENDOR_AREA)
+ iseries_parse_mfg_area((struct mfg_vpd_area *)data, len,
agent, &phb, frame, card);
/* Point to next Area. */
- tag_ptr = area + len;
+ data += len;
data_len -= len;
}
}