From: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Move routines and defines associated with hdrq size validation
to a chip specific routine since the limits are specific to
the device.
Fix incorrect value for min size 2 -> 32
CSR writes should also be in chip.c.
Create a chip routine to write the hdrq specific CSRs and call as
appropriate.
Reviewed-by: Dennis Dalessandro <dennis.alessandro@xxxxxxxxx>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@xxxxxxxxx>
Signed-off-by: Kaike Wan <kaike.wan@xxxxxxxxx>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
---
drivers/infiniband/hw/hfi1/chip.c | 78 +++++++++++++++++++++++++++++++++++++
drivers/infiniband/hw/hfi1/chip.h | 6 +++
drivers/infiniband/hw/hfi1/init.c | 72 +---------------------------------
3 files changed, 87 insertions(+), 69 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index b4fe37a..860615d 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -11858,6 +11858,84 @@ static u32 encoded_size(u32 size)
return 0x1; /* if invalid, go with the minimum size */
}
+/**
+ * encode_rcv_header_entry_size - return chip specific encoding for size
+ * @size: size in dwords
+ *
+ * Convert a receive header entry size that to the encoding used in the CSR.
+ *
+ * Return a zero if the given size is invalid, otherwise the encoding.
+ */
+u8 encode_rcv_header_entry_size(u8 size)
+{
+ /* there are only 3 valid receive header entry sizes */
+ if (size == 2)
+ return 1;
+ if (size == 16)
+ return 2;
+ if (size == 32)
+ return 4;
+ return 0; /* invalid */
+}
+
+/**
+ * hfi1_validate_rcvhdrcnt - validate hdrcnt
+ * @dd: the device data
+ * @thecnt: the header count
+ */
+int hfi1_validate_rcvhdrcnt(struct hfi1_devdata *dd, uint thecnt)
+{
+ if (thecnt <= HFI1_MIN_HDRQ_EGRBUF_CNT) {
+ dd_dev_err(dd, "Receive header queue count too small\n");
+ return -EINVAL;
+ }
+
+ if (thecnt > HFI1_MAX_HDRQ_EGRBUF_CNT) {
+ dd_dev_err(dd,
+ "Receive header queue count cannot be greater than %u\n",
+ HFI1_MAX_HDRQ_EGRBUF_CNT);
+ return -EINVAL;
+ }
+
+ if (thecnt % HDRQ_INCREMENT) {
+ dd_dev_err(dd, "Receive header queue count %d must be divisible by %lu\n",
+ thecnt, HDRQ_INCREMENT);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * set_hdrq_regs - set header queue registers for context
+ * @dd: the device data
+ * @ctxt: the context
+ * @entsize: the dword entry size
+ * @hdrcnt: the number of header entries
+ */
+void set_hdrq_regs(struct hfi1_devdata *dd, u8 ctxt, u8 entsize, u16 hdrcnt)
+{
+ u64 reg;
+
+ reg = (((u64)hdrcnt >> HDRQ_SIZE_SHIFT) & RCV_HDR_CNT_CNT_MASK) <<
+ RCV_HDR_CNT_CNT_SHIFT;
+ write_kctxt_csr(dd, ctxt, RCV_HDR_CNT, reg);
+ reg = ((u64)encode_rcv_header_entry_size(entsize) &
+ RCV_HDR_ENT_SIZE_ENT_SIZE_MASK) <<
+ RCV_HDR_ENT_SIZE_ENT_SIZE_SHIFT;
+ write_kctxt_csr(dd, ctxt, RCV_HDR_ENT_SIZE, reg);
+ reg = ((u64)DEFAULT_RCVHDRSIZE & RCV_HDR_SIZE_HDR_SIZE_MASK) <<
+ RCV_HDR_SIZE_HDR_SIZE_SHIFT;
+ write_kctxt_csr(dd, ctxt, RCV_HDR_SIZE, reg);
+
+ /*
+ * Program dummy tail address for every receive context
+ * before enabling any receive context
+ */
+ write_kctxt_csr(dd, ctxt, RCV_HDR_TAIL_ADDR,
+ dd->rcvhdrtail_dummy_dma);
+}
+
void hfi1_rcvctrl(struct hfi1_devdata *dd, unsigned int op,
struct hfi1_ctxtdata *rcd)
{
diff --git a/drivers/infiniband/hw/hfi1/chip.h b/drivers/infiniband/hw/hfi1/chip.h
index 4ca5ac8..05b7130 100644
--- a/drivers/infiniband/hw/hfi1/chip.h
+++ b/drivers/infiniband/hw/hfi1/chip.h
@@ -358,6 +358,8 @@
#define MAX_EAGER_BUFFER (256 * 1024)
#define MAX_EAGER_BUFFER_TOTAL (64 * (1 << 20)) /* max per ctxt 64MB */
#define MAX_EXPECTED_BUFFER (2048 * 1024)
+#define HFI1_MIN_HDRQ_EGRBUF_CNT 32
+#define HFI1_MAX_HDRQ_EGRBUF_CNT 16352
/*
* Receive expected base and count and eager base and count increment -
@@ -699,6 +701,10 @@ static inline u32 chip_rcv_array_count(struct hfi1_devdata *dd)
return read_csr(dd, RCV_ARRAY_CNT);
}
+u8 encode_rcv_header_entry_size(u8 size);
+int hfi1_validate_rcvhdrcnt(struct hfi1_devdata *dd, uint thecnt);
+void set_hdrq_regs(struct hfi1_devdata *dd, u8 ctxt, u8 entsize, u16 hdrcnt);
+
u64 create_pbc(struct hfi1_pportdata *ppd, u64 flags, int srate_mbs, u32 vl,
u32 dw_len);
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c
index f547a17..821e6fe 100644
--- a/drivers/infiniband/hw/hfi1/init.c
+++ b/drivers/infiniband/hw/hfi1/init.c
@@ -78,8 +78,6 @@
*/
#define HFI1_MIN_USER_CTXT_BUFCNT 7
-#define HFI1_MIN_HDRQ_EGRBUF_CNT 2
-#define HFI1_MAX_HDRQ_EGRBUF_CNT 16352
#define HFI1_MIN_EAGER_BUFFER_SIZE (4 * 1024) /* 4KB */
#define HFI1_MAX_EAGER_BUFFER_SIZE (256 * 1024) /* 256KB */
@@ -122,8 +120,6 @@
module_param(user_credit_return_threshold, uint, S_IRUGO);
MODULE_PARM_DESC(user_credit_return_threshold, "Credit return threshold for user send contexts, return when unreturned credits passes this many blocks (in percent of allocated blocks, 0 is off)");
-static inline u64 encode_rcv_header_entry_size(u16 size);
-
DEFINE_XARRAY_FLAGS(hfi1_dev_table, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ);
static int hfi1_create_kctxt(struct hfi1_devdata *dd,
@@ -511,23 +507,6 @@ void hfi1_free_ctxt(struct hfi1_ctxtdata *rcd)
}
/*
- * Convert a receive header entry size that to the encoding used in the CSR.
- *
- * Return a zero if the given size is invalid.
- */
-static inline u64 encode_rcv_header_entry_size(u16 size)
-{
- /* there are only 3 valid receive header entry sizes */
- if (size == 2)
- return 1;
- if (size == 16)
- return 2;
- else if (size == 32)
- return 4;
- return 0; /* invalid */
-}
-
-/*
* Select the largest ccti value over all SLs to determine the intra-
* packet gap for the link.
*
@@ -1612,29 +1591,6 @@ static void postinit_cleanup(struct hfi1_devdata *dd)
hfi1_free_devdata(dd);
}
-static int init_validate_rcvhdrcnt(struct hfi1_devdata *dd, uint thecnt)
-{
- if (thecnt <= HFI1_MIN_HDRQ_EGRBUF_CNT) {
- dd_dev_err(dd, "Receive header queue count too small\n");
- return -EINVAL;
- }
-
- if (thecnt > HFI1_MAX_HDRQ_EGRBUF_CNT) {
- dd_dev_err(dd,
- "Receive header queue count cannot be greater than %u\n",
- HFI1_MAX_HDRQ_EGRBUF_CNT);
- return -EINVAL;
- }
-
- if (thecnt % HDRQ_INCREMENT) {
- dd_dev_err(dd, "Receive header queue count %d must be divisible by %lu\n",
- thecnt, HDRQ_INCREMENT);
- return -EINVAL;
- }
-
- return 0;
-}
-
static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int ret = 0, j, pidx, initfail;
@@ -1662,7 +1618,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
/* Validate some global module parameters */
- ret = init_validate_rcvhdrcnt(dd, rcvhdrcnt);
+ ret = hfi1_validate_rcvhdrcnt(dd, rcvhdrcnt);
if (ret)
goto bail;
@@ -1843,7 +1799,6 @@ static void shutdown_one(struct pci_dev *pdev)
int hfi1_create_rcvhdrq(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd)
{
unsigned amt;
- u64 reg;
if (!rcd->rcvhdrq) {
gfp_t gfp_flags;
@@ -1875,30 +1830,9 @@ int hfi1_create_rcvhdrq(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd)
goto bail_free;
}
}
- /*
- * These values are per-context:
- * RcvHdrCnt
- * RcvHdrEntSize
- * RcvHdrSize
- */
- reg = ((u64)(rcd->rcvhdrq_cnt >> HDRQ_SIZE_SHIFT)
- & RCV_HDR_CNT_CNT_MASK)
- << RCV_HDR_CNT_CNT_SHIFT;
- write_kctxt_csr(dd, rcd->ctxt, RCV_HDR_CNT, reg);
- reg = (encode_rcv_header_entry_size(rcd->rcvhdrqentsize)
- & RCV_HDR_ENT_SIZE_ENT_SIZE_MASK)
- << RCV_HDR_ENT_SIZE_ENT_SIZE_SHIFT;
- write_kctxt_csr(dd, rcd->ctxt, RCV_HDR_ENT_SIZE, reg);
- reg = ((u64)DEFAULT_RCVHDRSIZE & RCV_HDR_SIZE_HDR_SIZE_MASK)
- << RCV_HDR_SIZE_HDR_SIZE_SHIFT;
- write_kctxt_csr(dd, rcd->ctxt, RCV_HDR_SIZE, reg);
- /*
- * Program dummy tail address for every receive context
- * before enabling any receive context
- */
- write_kctxt_csr(dd, rcd->ctxt, RCV_HDR_TAIL_ADDR,
- dd->rcvhdrtail_dummy_dma);
+ set_hdrq_regs(rcd->dd, rcd->ctxt, rcd->rcvhdrqentsize,
+ rcd->rcvhdrq_cnt);
return 0;
