Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-11 14:42:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

advansys: Remove CC_VERY_LONG_SG_LIST

Browse Source 
Was uncommented in the original driver, and I'm too lazy to
figure out the conversion.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Hannes Reinecke 2015-04-24 13:18:34 +02:00 committed by James Bottomley
parent 9fef6ba4c2
commit 96aabb2aac
1 changed files with 5 additions and 238 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

243
drivers/scsi/advansys.c
View File

@ -88,15 +88,6 @@ typedef unsigned char uchar;
#define PCI_DEVICE_ID_38C0800_REV1 0x2500
#define PCI_DEVICE_ID_38C1600_REV1 0x2700
/*
* Enable CC_VERY_LONG_SG_LIST to support up to 64K element SG lists.
* The SRB structure will have to be changed and the ASC_SRB2SCSIQ()
* macro re-defined to be able to obtain a ASC_SCSI_Q pointer from the
* SRB structure.
*/
#define CC_VERY_LONG_SG_LIST 0
#define ASC_SRB2SCSIQ(srb_ptr) (srb_ptr)
#define PortAddr unsigned int /* port address size */
#define inp(port) inb(port)
#define outp(port, byte) outb((byte), (port))
@ -3843,20 +3834,6 @@ static ushort AscReadLramWord(PortAddr iop_base, ushort addr)
return (word_data);
}
#if CC_VERY_LONG_SG_LIST
static u32 AscReadLramDWord(PortAddr iop_base, ushort addr)
{
ushort val_low, val_high;
u32 dword_data;
AscSetChipLramAddr(iop_base, addr);
val_low = AscGetChipLramData(iop_base);
val_high = AscGetChipLramData(iop_base);
dword_data = ((u32) val_high << 16) | (u32) val_low;
return (dword_data);
}
#endif /* CC_VERY_LONG_SG_LIST */
static void
AscMemWordSetLram(PortAddr iop_base, ushort s_addr, ushort set_wval, int words)
{
@ -6719,163 +6696,6 @@ static void AscIsrChipHalted(ASC_DVC_VAR *asc_dvc)
AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
return;
}
#if CC_VERY_LONG_SG_LIST
else if (int_halt_code == ASC_HALT_HOST_COPY_SG_LIST_TO_RISC) {
uchar q_no;
ushort q_addr;
uchar sg_wk_q_no;
uchar first_sg_wk_q_no;
ASC_SCSI_Q *scsiq; /* Ptr to driver request. */
ASC_SG_HEAD *sg_head; /* Ptr to driver SG request. */
ASC_SG_LIST_Q scsi_sg_q; /* Structure written to queue. */
ushort sg_list_dwords;
ushort sg_entry_cnt;
uchar next_qp;
int i;
q_no = AscReadLramByte(iop_base, (ushort)ASCV_REQ_SG_LIST_QP);
if (q_no == ASC_QLINK_END)
return 0;
q_addr = ASC_QNO_TO_QADDR(q_no);
/*
* Convert the request's SRB pointer to a host ASC_SCSI_Q
* structure pointer using a macro provided by the driver.
* The ASC_SCSI_Q pointer provides a pointer to the
* host ASC_SG_HEAD structure.
*/
/* Read request's SRB pointer. */
scsiq = (ASC_SCSI_Q *)
ASC_SRB2SCSIQ(ASC_U32_TO_VADDR(AscReadLramDWord(iop_base,
(ushort)
(q_addr +
ASC_SCSIQ_D_SRBPTR))));
/*
* Get request's first and working SG queue.
*/
sg_wk_q_no = AscReadLramByte(iop_base,
(ushort)(q_addr +
ASC_SCSIQ_B_SG_WK_QP));
first_sg_wk_q_no = AscReadLramByte(iop_base,
(ushort)(q_addr +
ASC_SCSIQ_B_FIRST_SG_WK_QP));
/*
* Reset request's working SG queue back to the
* first SG queue.
*/
AscWriteLramByte(iop_base,
(ushort)(q_addr +
(ushort)ASC_SCSIQ_B_SG_WK_QP),
first_sg_wk_q_no);
sg_head = scsiq->sg_head;
/*
* Set sg_entry_cnt to the number of SG elements
* that will be completed on this interrupt.
*
* Note: The allocated SG queues contain ASC_MAX_SG_LIST - 1
* SG elements. The data_cnt and data_addr fields which
* add 1 to the SG element capacity are not used when
* restarting SG handling after a halt.
*/
if (scsiq->remain_sg_entry_cnt > (ASC_MAX_SG_LIST - 1)) {
sg_entry_cnt = ASC_MAX_SG_LIST - 1;
/*
* Keep track of remaining number of SG elements that
* will need to be handled on the next interrupt.
*/
scsiq->remain_sg_entry_cnt -= (ASC_MAX_SG_LIST - 1);
} else {
sg_entry_cnt = scsiq->remain_sg_entry_cnt;
scsiq->remain_sg_entry_cnt = 0;
}
/*
* Copy SG elements into the list of allocated SG queues.
*
* Last index completed is saved in scsiq->next_sg_index.
*/
next_qp = first_sg_wk_q_no;
q_addr = ASC_QNO_TO_QADDR(next_qp);
scsi_sg_q.sg_head_qp = q_no;
scsi_sg_q.cntl = QCSG_SG_XFER_LIST;
for (i = 0; i < sg_head->queue_cnt; i++) {
scsi_sg_q.seq_no = i + 1;
if (sg_entry_cnt > ASC_SG_LIST_PER_Q) {
sg_list_dwords = (uchar)(ASC_SG_LIST_PER_Q * 2);
sg_entry_cnt -= ASC_SG_LIST_PER_Q;
/*
* After very first SG queue RISC FW uses next
* SG queue first element then checks sg_list_cnt
* against zero and then decrements, so set
* sg_list_cnt 1 less than number of SG elements
* in each SG queue.
*/
scsi_sg_q.sg_list_cnt = ASC_SG_LIST_PER_Q - 1;
scsi_sg_q.sg_cur_list_cnt =
ASC_SG_LIST_PER_Q - 1;
} else {
/*
* This is the last SG queue in the list of
* allocated SG queues. If there are more
* SG elements than will fit in the allocated
* queues, then set the QCSG_SG_XFER_MORE flag.
*/
if (scsiq->remain_sg_entry_cnt != 0) {
scsi_sg_q.cntl |= QCSG_SG_XFER_MORE;
} else {
scsi_sg_q.cntl |= QCSG_SG_XFER_END;
}
/* equals sg_entry_cnt * 2 */
sg_list_dwords = sg_entry_cnt << 1;
scsi_sg_q.sg_list_cnt = sg_entry_cnt - 1;
scsi_sg_q.sg_cur_list_cnt = sg_entry_cnt - 1;
sg_entry_cnt = 0;
}
scsi_sg_q.q_no = next_qp;
AscMemWordCopyPtrToLram(iop_base,
q_addr + ASC_SCSIQ_SGHD_CPY_BEG,
(uchar *)&scsi_sg_q,
sizeof(ASC_SG_LIST_Q) >> 1);
AscMemDWordCopyPtrToLram(iop_base,
q_addr + ASC_SGQ_LIST_BEG,
(uchar *)&sg_head->
sg_list[scsiq->next_sg_index],
sg_list_dwords);
scsiq->next_sg_index += ASC_SG_LIST_PER_Q;
/*
* If the just completed SG queue contained the
* last SG element, then no more SG queues need
* to be written.
*/
if (scsi_sg_q.cntl & QCSG_SG_XFER_END) {
break;
}
next_qp = AscReadLramByte(iop_base,
(ushort)(q_addr +
ASC_SCSIQ_B_FWD));
q_addr = ASC_QNO_TO_QADDR(next_qp);
}
/*
* Clear the halt condition so the RISC will be restarted
* after the return.
*/
AscWriteLramWord(iop_base, ASCV_HALTCODE_W, 0);
return;
}
#endif /* CC_VERY_LONG_SG_LIST */
return;
}
@ -8221,40 +8041,13 @@ AscPutReadySgListQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar q_no)
saved_data_cnt = scsiq->q1.data_cnt;
scsiq->q1.data_addr = cpu_to_le32(sg_head->sg_list[0].addr);
scsiq->q1.data_cnt = cpu_to_le32(sg_head->sg_list[0].bytes);
#if CC_VERY_LONG_SG_LIST
/*
* If sg_head->entry_cnt is greater than ASC_MAX_SG_LIST
* then not all SG elements will fit in the allocated queues.
* The rest of the SG elements will be copied when the RISC
* completes the SG elements that fit and halts.
* Set sg_entry_cnt to be the number of SG elements that
* will fit in the allocated SG queues. It is minus 1, because
* the first SG element is handled above.
*/
if (sg_head->entry_cnt > ASC_MAX_SG_LIST) {
/*
* Set sg_entry_cnt to be the number of SG elements that
* will fit in the allocated SG queues. It is minus 1, because
* the first SG element is handled above. ASC_MAX_SG_LIST is
* already inflated by 1 to account for this. For example it
* may be 50 which is 1 + 7 queues * 7 SG elements.
*/
sg_entry_cnt = ASC_MAX_SG_LIST - 1;
sg_entry_cnt = sg_head->entry_cnt - 1;
/*
* Keep track of remaining number of SG elements that will
* need to be handled from a_isr.c.
*/
scsiq->remain_sg_entry_cnt =
sg_head->entry_cnt - ASC_MAX_SG_LIST;
} else {
#endif /* CC_VERY_LONG_SG_LIST */
/*
* Set sg_entry_cnt to be the number of SG elements that
* will fit in the allocated SG queues. It is minus 1, because
* the first SG element is handled above.
*/
sg_entry_cnt = sg_head->entry_cnt - 1;
#if CC_VERY_LONG_SG_LIST
}
#endif /* CC_VERY_LONG_SG_LIST */
if (sg_entry_cnt != 0) {
scsiq->q1.cntl |= QC_SG_HEAD;
q_addr = ASC_QNO_TO_QADDR(q_no);
@ -8279,21 +8072,7 @@ AscPutReadySgListQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq, uchar q_no)
ASC_SG_LIST_PER_Q - 1;
}
} else {
#if CC_VERY_LONG_SG_LIST
/*
* This is the last SG queue in the list of
* allocated SG queues. If there are more
* SG elements than will fit in the allocated
* queues, then set the QCSG_SG_XFER_MORE flag.
*/
if (sg_head->entry_cnt > ASC_MAX_SG_LIST) {
scsi_sg_q.cntl |= QCSG_SG_XFER_MORE;
} else {
#endif /* CC_VERY_LONG_SG_LIST */
scsi_sg_q.cntl |= QCSG_SG_XFER_END;
#if CC_VERY_LONG_SG_LIST
}
#endif /* CC_VERY_LONG_SG_LIST */
scsi_sg_q.cntl |= QCSG_SG_XFER_END;
sg_list_dwords = sg_entry_cnt << 1;
if (i == 0) {
scsi_sg_q.sg_list_cnt = sg_entry_cnt;
@ -8449,12 +8228,10 @@ static int AscExeScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq)
asc_dvc->in_critical_cnt--;
return ASC_ERROR;
}
#if !CC_VERY_LONG_SG_LIST
if (sg_entry_cnt > ASC_MAX_SG_LIST) {
asc_dvc->in_critical_cnt--;
return ASC_ERROR;
}
#endif /* !CC_VERY_LONG_SG_LIST */
if (sg_entry_cnt == 1) {
scsiq->q1.data_addr = cpu_to_le32(sg_head->sg_list[0].addr);
scsiq->q1.data_cnt = cpu_to_le32(sg_head->sg_list[0].bytes);
@ -8543,16 +8320,6 @@ static int AscExeScsiQueue(ASC_DVC_VAR *asc_dvc, ASC_SCSI_Q *scsiq)
}
}
sg_head->entry_to_copy = sg_head->entry_cnt;
#if CC_VERY_LONG_SG_LIST
/*
* Set the sg_entry_cnt to the maximum possible. The rest of
* the SG elements will be copied when the RISC completes the
* SG elements that fit and halts.
*/
if (sg_entry_cnt > ASC_MAX_SG_LIST) {
sg_entry_cnt = ASC_MAX_SG_LIST;
}
#endif /* CC_VERY_LONG_SG_LIST */
n_q_required = AscSgListToQueue(sg_entry_cnt);
if ((AscGetNumOfFreeQueue(asc_dvc, target_ix, n_q_required) >=
(uint) n_q_required)