[PATCH net-next v4 4/8] octeon_ep: add separate mailbox command and response queues

Veerasenareddy Burru
2023-03-22T09:21:19Z

Enhance control mailbox protocol to support following
- separate command and response queues
* command queue to send control commands to firmware.
* response queue to receive responses and notifications from
firmware.
- variable size messages using scatter/gather

Signed-off-by: Abhijit Ayarekar <aayarekar@marvell.com>
Signed-off-by: Veerasenareddy Burru <vburru@marvell.com>
---
v3 -> v4:
* addressed review comments
https://lore.kernel.org/all/Y+0AW3b9No9pyWrr@boxer/
- fixed rct violation.
- separated out changes to APIs accepting function ID to
work for PF and VFs. Separated changes are included in patch 0005.
- modified return types from int to void for functions where.
- renamed write_mbox_data() to octep_write_mbox_data() and now
returns void.
- renamed read_mbox_data() to octep_read_mbox_data() and now
returns void.
- removed num argument from octep_ctrl_mbox_send/recv APIs.
- renamed send_mbox_req() to octep_send_mbox_req().
- octep_ctrl_net_recv_fw_messages() now returns void.

v2 -> v3:
* no change

v1 -> v2:
* modified the patch to work with device status "oct->status" removed.

.../marvell/octeon_ep/octep_ctrl_mbox.c | 276 ++++++++-------
.../marvell/octeon_ep/octep_ctrl_mbox.h | 88 ++---
.../marvell/octeon_ep/octep_ctrl_net.c | 330 ++++++++++++------
.../marvell/octeon_ep/octep_ctrl_net.h | 164 +++++----
.../marvell/octeon_ep/octep_ethtool.c | 6 +-
.../ethernet/marvell/octeon_ep/octep_main.c | 76 +---
6 files changed, 529 insertions(+), 411 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
index 39322e4dd100..a4ee6f3ae354 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
@@ -24,41 +24,49 @@
/* Time in msecs to wait for message response */
#define OCTEP_CTRL_MBOX_MSG_WAIT_MS 10

-#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(m) (m)
-#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(m) ((m) + 8)
-#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(m) ((m) + 24)
-#define OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(m) ((m) + 144)
-
-#define OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m) ((m) + OCTEP_CTRL_MBOX_INFO_SZ)
-#define OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(m) (OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m))
-#define OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(m) ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 4)
-#define OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(m) ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 8)
-#define OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(m) ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 12)
-
-#define OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m) ((m) + \
- OCTEP_CTRL_MBOX_INFO_SZ + \
- OCTEP_CTRL_MBOX_H2FQ_INFO_SZ)
-#define OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(m) (OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m))
-#define OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(m) ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 4)
-#define OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(m) ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 8)
-#define OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(m) ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 12)
-
-#define OCTEP_CTRL_MBOX_Q_OFFSET(m, i) ((m) + \
- (sizeof(struct octep_ctrl_mbox_msg) * (i)))
-
-static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 mask)
+/* Size of mbox info in bytes */
+#define OCTEP_CTRL_MBOX_INFO_SZ 256
+/* Size of mbox host to fw queue info in bytes */
+#define OCTEP_CTRL_MBOX_H2FQ_INFO_SZ 16
+/* Size of mbox fw to host queue info in bytes */
+#define OCTEP_CTRL_MBOX_F2HQ_INFO_SZ 16
+
+#define OCTEP_CTRL_MBOX_TOTAL_INFO_SZ (OCTEP_CTRL_MBOX_INFO_SZ + \
+ OCTEP_CTRL_MBOX_H2FQ_INFO_SZ + \
+ OCTEP_CTRL_MBOX_F2HQ_INFO_SZ)
+
+#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM(m) (m)
+#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(m) ((m) + 8)
+#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS(m) ((m) + 24)
+#define OCTEP_CTRL_MBOX_INFO_FW_STATUS(m) ((m) + 144)
+
+#define OCTEP_CTRL_MBOX_H2FQ_INFO(m) ((m) + OCTEP_CTRL_MBOX_INFO_SZ)
+#define OCTEP_CTRL_MBOX_H2FQ_PROD(m) (OCTEP_CTRL_MBOX_H2FQ_INFO(m))
+#define OCTEP_CTRL_MBOX_H2FQ_CONS(m) ((OCTEP_CTRL_MBOX_H2FQ_INFO(m)) + 4)
+#define OCTEP_CTRL_MBOX_H2FQ_SZ(m) ((OCTEP_CTRL_MBOX_H2FQ_INFO(m)) + 8)
+
+#define OCTEP_CTRL_MBOX_F2HQ_INFO(m) ((m) + \
+ OCTEP_CTRL_MBOX_INFO_SZ + \
+ OCTEP_CTRL_MBOX_H2FQ_INFO_SZ)
+#define OCTEP_CTRL_MBOX_F2HQ_PROD(m) (OCTEP_CTRL_MBOX_F2HQ_INFO(m))
+#define OCTEP_CTRL_MBOX_F2HQ_CONS(m) ((OCTEP_CTRL_MBOX_F2HQ_INFO(m)) + 4)
+#define OCTEP_CTRL_MBOX_F2HQ_SZ(m) ((OCTEP_CTRL_MBOX_F2HQ_INFO(m)) + 8)
+
+static const u32 mbox_hdr_sz = sizeof(union octep_ctrl_mbox_msg_hdr);
+
+static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 inc, u32 sz)
{
- return (index + 1) & mask;
+ return (index + inc) % sz;
}

-static u32 octep_ctrl_mbox_circq_space(u32 pi, u32 ci, u32 mask)
+static u32 octep_ctrl_mbox_circq_space(u32 pi, u32 ci, u32 sz)
{
- return mask - ((pi - ci) & mask);
+ return sz - (abs(pi - ci) % sz);
}

-static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 mask)
+static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 sz)
{
- return ((pi - ci) & mask);
+ return (abs(pi - ci) % sz);
}

int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
@@ -73,153 +81,170 @@ int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
return -EINVAL;
}

- magic_num = readq(OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(mbox->barmem));
+ magic_num = readq(OCTEP_CTRL_MBOX_INFO_MAGIC_NUM(mbox->barmem));
if (magic_num != OCTEP_CTRL_MBOX_MAGIC_NUMBER) {
pr_info("octep_ctrl_mbox : Invalid magic number %llx\n", magic_num);
return -EINVAL;
}

- status = readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(mbox->barmem));
+ status = readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox->barmem));
if (status != OCTEP_CTRL_MBOX_STATUS_READY) {
pr_info("octep_ctrl_mbox : Firmware is not ready.\n");
return -EINVAL;
}

- mbox->barmem_sz = readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(mbox->barmem));
+ mbox->barmem_sz = readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(mbox->barmem));

- writeq(OCTEP_CTRL_MBOX_STATUS_INIT, OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+ writeq(OCTEP_CTRL_MBOX_STATUS_INIT,
+ OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));

- mbox->h2fq.elem_cnt = readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(mbox->barmem));
- mbox->h2fq.elem_sz = readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(mbox->barmem));
- mbox->h2fq.mask = (mbox->h2fq.elem_cnt - 1);
- mutex_init(&mbox->h2fq_lock);
+ mbox->h2fq.sz = readl(OCTEP_CTRL_MBOX_H2FQ_SZ(mbox->barmem));
+ mbox->h2fq.hw_prod = OCTEP_CTRL_MBOX_H2FQ_PROD(mbox->barmem);
+ mbox->h2fq.hw_cons = OCTEP_CTRL_MBOX_H2FQ_CONS(mbox->barmem);
+ mbox->h2fq.hw_q = mbox->barmem + OCTEP_CTRL_MBOX_TOTAL_INFO_SZ;

- mbox->f2hq.elem_cnt = readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(mbox->barmem));
- mbox->f2hq.elem_sz = readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(mbox->barmem));
- mbox->f2hq.mask = (mbox->f2hq.elem_cnt - 1);
- mutex_init(&mbox->f2hq_lock);
-
- mbox->h2fq.hw_prod = OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(mbox->barmem);
- mbox->h2fq.hw_cons = OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(mbox->barmem);
- mbox->h2fq.hw_q = mbox->barmem +
- OCTEP_CTRL_MBOX_INFO_SZ +
- OCTEP_CTRL_MBOX_H2FQ_INFO_SZ +
- OCTEP_CTRL_MBOX_F2HQ_INFO_SZ;
-
- mbox->f2hq.hw_prod = OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(mbox->barmem);
- mbox->f2hq.hw_cons = OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(mbox->barmem);
- mbox->f2hq.hw_q = mbox->h2fq.hw_q +
- ((mbox->h2fq.elem_sz + sizeof(union octep_ctrl_mbox_msg_hdr)) *
- mbox->h2fq.elem_cnt);
+ mbox->f2hq.sz = readl(OCTEP_CTRL_MBOX_F2HQ_SZ(mbox->barmem));
+ mbox->f2hq.hw_prod = OCTEP_CTRL_MBOX_F2HQ_PROD(mbox->barmem);
+ mbox->f2hq.hw_cons = OCTEP_CTRL_MBOX_F2HQ_CONS(mbox->barmem);
+ mbox->f2hq.hw_q = mbox->barmem +
+ OCTEP_CTRL_MBOX_TOTAL_INFO_SZ +
+ mbox->h2fq.sz;

/* ensure ready state is seen after everything is initialized */
wmb();
- writeq(OCTEP_CTRL_MBOX_STATUS_READY, OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+ writeq(OCTEP_CTRL_MBOX_STATUS_READY,
+ OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));

pr_info("Octep ctrl mbox : Init successful.\n");

return 0;
}

+static void
+octep_write_mbox_data(struct octep_ctrl_mbox_q *q, u32 *pi, u32 ci, void *buf, u32 w_sz)
+{
+ u8 __iomem *qbuf;
+ u32 cp_sz;
+
+ /* Assumption: Caller has ensured enough write space */
+ qbuf = (q->hw_q + *pi);
+ if (*pi < ci) {
+ /* copy entire w_sz */
+ memcpy_toio(qbuf, buf, w_sz);
+ *pi = octep_ctrl_mbox_circq_inc(*pi, w_sz, q->sz);
+ } else {
+ /* copy up to end of queue */
+ cp_sz = min((q->sz - *pi), w_sz);
+ memcpy_toio(qbuf, buf, cp_sz);
+ w_sz -= cp_sz;
+ *pi = octep_ctrl_mbox_circq_inc(*pi, cp_sz, q->sz);
+ if (w_sz) {
+ /* roll over and copy remaining w_sz */
+ buf += cp_sz;
+ qbuf = (q->hw_q + *pi);
+ memcpy_toio(qbuf, buf, w_sz);
+ *pi = octep_ctrl_mbox_circq_inc(*pi, w_sz, q->sz);
+ }
+ }
+}
+
int octep_ctrl_mbox_send(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_msg *msg)
{
- unsigned long timeout = msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_TIMEOUT_MS);
- unsigned long period = msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_WAIT_MS);
+ struct octep_ctrl_mbox_msg_buf *sg;
struct octep_ctrl_mbox_q *q;
- unsigned long expire;
- u64 *mbuf, *word0;
- u8 __iomem *qidx;
- u16 pi, ci;
- int i;
+ u32 pi, ci, buf_sz, w_sz;
+ int s;

if (!mbox || !msg)
return -EINVAL;

+ if (readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox->barmem)) != OCTEP_CTRL_MBOX_STATUS_READY)
+ return -EIO;
+
+ mutex_lock(&mbox->h2fq_lock);
q = &mbox->h2fq;
pi = readl(q->hw_prod);
ci = readl(q->hw_cons);

- if (!octep_ctrl_mbox_circq_space(pi, ci, q->mask))
- return -ENOMEM;
-
- qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, pi);
- mbuf = (u64 *)msg->msg;
- word0 = &msg->hdr.word0;
-
- mutex_lock(&mbox->h2fq_lock);
- for (i = 1; i <= msg->hdr.sizew; i++)
- writeq(*mbuf++, (qidx + (i * 8)));
-
- writeq(*word0, qidx);
+ if (octep_ctrl_mbox_circq_space(pi, ci, q->sz) < (msg->hdr.s.sz + mbox_hdr_sz)) {
+ mutex_unlock(&mbox->f2hq_lock);
+ return -EAGAIN;
+ }

- pi = octep_ctrl_mbox_circq_inc(pi, q->mask);
+ octep_write_mbox_data(q, &pi, ci, (void *)&msg->hdr, mbox_hdr_sz);
+ buf_sz = msg->hdr.s.sz;
+ for (s = 0; ((s < msg->sg_num) && (buf_sz > 0)); s++) {
+ sg = &msg->sg_list[s];
+ w_sz = (sg->sz <= buf_sz) ? sg->sz : buf_sz;
+ octep_write_mbox_data(q, &pi, ci, sg->msg, w_sz);
+ buf_sz -= w_sz;
+ }
writel(pi, q->hw_prod);
mutex_unlock(&mbox->h2fq_lock);

- /* don't check for notification response */
- if (msg->hdr.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY)
- return 0;
-
- expire = jiffies + timeout;
- while (true) {
- *word0 = readq(qidx);
- if (msg->hdr.flags == OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
- break;
- schedule_timeout_interruptible(period);
- if (signal_pending(current) || time_after(jiffies, expire)) {
- pr_info("octep_ctrl_mbox: Timed out\n");
- return -EBUSY;
+ return 0;
+}
+
+static void
+octep_read_mbox_data(struct octep_ctrl_mbox_q *q, u32 pi, u32 *ci, void *buf, u32 r_sz)
+{
+ u8 __iomem *qbuf;
+ u32 cp_sz;
+
+ /* Assumption: Caller has ensured enough read space */
+ qbuf = (q->hw_q + *ci);
+ if (*ci < pi) {
+ /* copy entire r_sz */
+ memcpy_fromio(buf, qbuf, r_sz);
+ *ci = octep_ctrl_mbox_circq_inc(*ci, r_sz, q->sz);
+ } else {
+ /* copy up to end of queue */
+ cp_sz = min((q->sz - *ci), r_sz);
+ memcpy_fromio(buf, qbuf, cp_sz);
+ r_sz -= cp_sz;
+ *ci = octep_ctrl_mbox_circq_inc(*ci, cp_sz, q->sz);
+ if (r_sz) {
+ /* roll over and copy remaining r_sz */
+ buf += cp_sz;
+ qbuf = (q->hw_q + *ci);
+ memcpy_fromio(buf, qbuf, r_sz);
+ *ci = octep_ctrl_mbox_circq_inc(*ci, r_sz, q->sz);
}
}
- mbuf = (u64 *)msg->msg;
- for (i = 1; i <= msg->hdr.sizew; i++)
- *mbuf++ = readq(qidx + (i * 8));
-
- return 0;
}

int octep_ctrl_mbox_recv(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_msg *msg)
{
+ struct octep_ctrl_mbox_msg_buf *sg;
+ u32 pi, ci, r_sz, buf_sz, q_depth;
struct octep_ctrl_mbox_q *q;
- u32 count, pi, ci;
- u8 __iomem *qidx;
- u64 *mbuf;
- int i;
+ int s;

- if (!mbox || !msg)
- return -EINVAL;
+ if (readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox->barmem)) != OCTEP_CTRL_MBOX_STATUS_READY)
+ return -EIO;

+ mutex_lock(&mbox->f2hq_lock);
q = &mbox->f2hq;
pi = readl(q->hw_prod);
ci = readl(q->hw_cons);
- count = octep_ctrl_mbox_circq_depth(pi, ci, q->mask);
- if (!count)
- return -EAGAIN;
-
- qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, ci);
- mbuf = (u64 *)msg->msg;

- mutex_lock(&mbox->f2hq_lock);
-
- msg->hdr.word0 = readq(qidx);
- for (i = 1; i <= msg->hdr.sizew; i++)
- *mbuf++ = readq(qidx + (i * 8));
+ q_depth = octep_ctrl_mbox_circq_depth(pi, ci, q->sz);
+ if (q_depth < mbox_hdr_sz) {
+ mutex_unlock(&mbox->f2hq_lock);
+ return -EAGAIN;
+ }

- ci = octep_ctrl_mbox_circq_inc(ci, q->mask);
+ octep_read_mbox_data(q, pi, &ci, (void *)&msg->hdr, mbox_hdr_sz);
+ buf_sz = msg->hdr.s.sz;
+ for (s = 0; ((s < msg->sg_num) && (buf_sz > 0)); s++) {
+ sg = &msg->sg_list[s];
+ r_sz = (sg->sz <= buf_sz) ? sg->sz : buf_sz;
+ octep_read_mbox_data(q, pi, &ci, sg->msg, r_sz);
+ buf_sz -= r_sz;
+ }
writel(ci, q->hw_cons);
-
mutex_unlock(&mbox->f2hq_lock);

- if (msg->hdr.flags != OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ || !mbox->process_req)
- return 0;
-
- mbox->process_req(mbox->user_ctx, msg);
- mbuf = (u64 *)msg->msg;
- for (i = 1; i <= msg->hdr.sizew; i++)
- writeq(*mbuf++, (qidx + (i * 8)));
-
- writeq(msg->hdr.word0, qidx);
-
return 0;
}

@@ -227,18 +252,17 @@ int octep_ctrl_mbox_uninit(struct octep_ctrl_mbox *mbox)
{
if (!mbox)
return -EINVAL;
+ if (!mbox->barmem)
+ return -EINVAL;

- writeq(OCTEP_CTRL_MBOX_STATUS_UNINIT,
- OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
+ writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
+ OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));
/* ensure uninit state is written before uninitialization */
wmb();

mutex_destroy(&mbox->h2fq_lock);
mutex_destroy(&mbox->f2hq_lock);

- writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
- OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
-
pr_info("Octep ctrl mbox : Uninit successful.\n");

return 0;
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.h b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.h
index 2dc5753cfec6..9c4ff0fba6a0 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.h
@@ -27,50 +27,39 @@
* |-------------------------------------------|
* |producer index (4 bytes) |
* |consumer index (4 bytes) |
- * |element size (4 bytes) |
- * |element count (4 bytes) |
+ * |max element size (4 bytes) |
+ * |reserved (4 bytes) |
* |===========================================|
* |Fw to Host Queue info (16 bytes) |
* |-------------------------------------------|
* |producer index (4 bytes) |
* |consumer index (4 bytes) |
- * |element size (4 bytes) |
- * |element count (4 bytes) |
+ * |max element size (4 bytes) |
+ * |reserved (4 bytes) |
* |===========================================|
- * |Host to Fw Queue |
+ * |Host to Fw Queue ((total size-288/2) bytes)|
* |-------------------------------------------|
- * |((elem_sz + hdr(8 bytes)) * elem_cnt) bytes|
+ * | |
* |===========================================|
* |===========================================|
- * |Fw to Host Queue |
+ * |Fw to Host Queue ((total size-288/2) bytes)|
* |-------------------------------------------|
- * |((elem_sz + hdr(8 bytes)) * elem_cnt) bytes|
+ * | |
* |===========================================|
*/

#define OCTEP_CTRL_MBOX_MAGIC_NUMBER 0xdeaddeadbeefbeefull

-/* Size of mbox info in bytes */
-#define OCTEP_CTRL_MBOX_INFO_SZ 256
-/* Size of mbox host to target queue info in bytes */
-#define OCTEP_CTRL_MBOX_H2FQ_INFO_SZ 16
-/* Size of mbox target to host queue info in bytes */
-#define OCTEP_CTRL_MBOX_F2HQ_INFO_SZ 16
-/* Size of mbox queue in bytes */
-#define OCTEP_CTRL_MBOX_Q_SZ(sz, cnt) (((sz) + 8) * (cnt))
-/* Size of mbox in bytes */
-#define OCTEP_CTRL_MBOX_SZ(hsz, hcnt, fsz, fcnt) (OCTEP_CTRL_MBOX_INFO_SZ + \
- OCTEP_CTRL_MBOX_H2FQ_INFO_SZ + \
- OCTEP_CTRL_MBOX_F2HQ_INFO_SZ + \
- OCTEP_CTRL_MBOX_Q_SZ(hsz, hcnt) + \
- OCTEP_CTRL_MBOX_Q_SZ(fsz, fcnt))
-
/* Valid request message */
#define OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ BIT(0)
/* Valid response message */
#define OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP BIT(1)
/* Valid notification, no response required */
#define OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY BIT(2)
+/* Valid custom message */
+#define OCTEP_CTRL_MBOX_MSG_HDR_FLAG_CUSTOM BIT(3)
+
+#define OCTEP_CTRL_MBOX_MSG_DESC_MAX 4

enum octep_ctrl_mbox_status {
OCTEP_CTRL_MBOX_STATUS_INVALID = 0,
@@ -81,31 +70,48 @@ enum octep_ctrl_mbox_status {

/* mbox message */
union octep_ctrl_mbox_msg_hdr {
- u64 word0;
+ u64 words[2];
struct {
+ /* must be 0 */
+ u16 reserved1:15;
+ /* vf_idx is valid if 1 */
+ u16 is_vf:1;
+ /* sender vf index 0-(n-1), 0 if (is_vf==0) */
+ u16 vf_idx;
+ /* total size of message excluding header */
+ u32 sz;
/* OCTEP_CTRL_MBOX_MSG_HDR_FLAG_* */
u32 flags;
- /* size of message in words excluding header */
- u32 sizew;
- };
+ /* identifier to match responses */
+ u16 msg_id;
+ u16 reserved2;
+ } s;
+};
+
+/* mbox message buffer */
+struct octep_ctrl_mbox_msg_buf {
+ u32 reserved1;
+ u16 reserved2;
+ /* size of buffer */
+ u16 sz;
+ /* pointer to message buffer */
+ void *msg;
};

/* mbox message */
struct octep_ctrl_mbox_msg {
/* mbox transaction header */
union octep_ctrl_mbox_msg_hdr hdr;
- /* pointer to message buffer */
- void *msg;
+ /* number of sg buffer's */
+ int sg_num;
+ /* message buffer's */
+ struct octep_ctrl_mbox_msg_buf sg_list[OCTEP_CTRL_MBOX_MSG_DESC_MAX];
};

/* Mbox queue */
struct octep_ctrl_mbox_q {
- /* q element size, should be aligned to unsigned long */
- u16 elem_sz;
- /* q element count, should be power of 2 */
- u16 elem_cnt;
- /* q mask */
- u16 mask;
+ /* size of queue buffer */
+ u32 sz;
/* producer address in bar mem */
u8 __iomem *hw_prod;
/* consumer address in bar mem */
@@ -115,16 +121,10 @@ struct octep_ctrl_mbox_q {
};

struct octep_ctrl_mbox {
- /* host driver version */
- u64 version;
/* size of bar memory */
u32 barmem_sz;
/* pointer to BAR memory */
u8 __iomem *barmem;
- /* user context for callback, can be null */
- void *user_ctx;
- /* callback handler for processing request, called from octep_ctrl_mbox_recv */
- int (*process_req)(void *user_ctx, struct octep_ctrl_mbox_msg *msg);
/* host-to-fw queue */
struct octep_ctrl_mbox_q h2fq;
/* fw-to-host queue */
@@ -146,6 +146,8 @@ int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox);
/* Send mbox message.
*
* @param mbox: non-null pointer to struct octep_ctrl_mbox.
+ * @param msg: non-null pointer to struct octep_ctrl_mbox_msg.
+ * Caller should fill msg.sz and msg.desc.sz for each message.
*
* return value: 0 on success, -errno on failure.
*/
@@ -154,6 +156,8 @@ int octep_ctrl_mbox_send(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_ms
/* Retrieve mbox message.
*
* @param mbox: non-null pointer to struct octep_ctrl_mbox.
+ * @param msg: non-null pointer to struct octep_ctrl_mbox_msg.
+ * Caller should fill msg.sz and msg.desc.sz for each message.
*
* return value: 0 on success, -errno on failure.
*/
@@ -161,7 +165,7 @@ int octep_ctrl_mbox_recv(struct octep_ctrl_mbox *mbox, struct octep_ctrl_mbox_ms

/* Uninitialize control mbox.
*
- * @param ep: non-null pointer to struct octep_ctrl_mbox.
+ * @param mbox: non-null pointer to struct octep_ctrl_mbox.
*
* return value: 0 on success, -errno on failure.
*/
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
index 7c00c896ab98..8d4d74e18a67 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
@@ -8,134 +8,194 @@
#include <linux/types.h>
#include <linux/etherdevice.h>
#include <linux/pci.h>
+#include <linux/wait.h>

#include "octep_config.h"
#include "octep_main.h"
#include "octep_ctrl_net.h"

-int octep_get_link_status(struct octep_device *oct)
+static const u32 req_hdr_sz = sizeof(union octep_ctrl_net_req_hdr);
+static const u32 mtu_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_mtu);
+static const u32 mac_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_mac);
+static const u32 state_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_state);
+static const u32 link_info_sz = sizeof(struct octep_ctrl_net_link_info);
+static const u32 get_stats_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_get_stats);
+static atomic_t ctrl_net_msg_id;
+
+static void init_send_req(struct octep_ctrl_mbox_msg *msg, void *buf, u16 sz)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_net_h2f_resp *resp;
- struct octep_ctrl_mbox_msg msg = {};
- int err;
+ msg->hdr.s.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
+ msg->hdr.s.msg_id = atomic_inc_return(&ctrl_net_msg_id) &
+ GENMASK(sizeof(msg->hdr.s.msg_id) * BITS_PER_BYTE, 0);
+ msg->hdr.s.sz = req_hdr_sz + sz;
+ msg->sg_num = 1;
+ msg->sg_list[0].msg = buf;
+ msg->sg_list[0].sz = msg->hdr.s.sz;
+}

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
- req.link.cmd = OCTEP_CTRL_NET_CMD_GET;
+static int octep_send_mbox_req(struct octep_device *oct,
+ struct octep_ctrl_net_wait_data *d,
+ bool wait_for_response)
+{
+ int err, ret;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
- msg.msg = &req;
- err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
- if (err)
+ err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &d->msg);
+ if (err < 0)
return err;

- resp = (struct octep_ctrl_net_h2f_resp *)&req;
- return resp->link.state;
+ if (!wait_for_response)
+ return 0;
+
+ d->done = 0;
+ INIT_LIST_HEAD(&d->list);
+ list_add_tail(&d->list, &oct->ctrl_req_wait_list);
+ ret = wait_event_interruptible_timeout(oct->ctrl_req_wait_q,
+ (d->done != 0),
+ jiffies + msecs_to_jiffies(500));
+ list_del(&d->list);
+ if (ret == 0 || ret == 1)
+ return -EAGAIN;
+
+ /**
+ * (ret == 0) cond = false && timeout, return 0
+ * (ret < 0) interrupted by signal, return 0
+ * (ret == 1) cond = true && timeout, return 1
+ * (ret >= 1) cond = true && !timeout, return 1
+ */
+
+ if (d->data.resp.hdr.s.reply != OCTEP_CTRL_NET_REPLY_OK)
+ return -EAGAIN;
+
+ return 0;
+}
+
+int octep_ctrl_net_init(struct octep_device *oct)
+{
+ struct octep_ctrl_mbox *ctrl_mbox;
+ struct pci_dev *pdev = oct->pdev;
+ int ret;
+
+ init_waitqueue_head(&oct->ctrl_req_wait_q);
+ INIT_LIST_HEAD(&oct->ctrl_req_wait_list);
+
+ /* Initialize control mbox */
+ ctrl_mbox = &oct->ctrl_mbox;
+ ctrl_mbox->barmem = CFG_GET_CTRL_MBOX_MEM_ADDR(oct->conf);
+ ret = octep_ctrl_mbox_init(ctrl_mbox);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to initialize control mbox\n");
+ return ret;
+ }
+ oct->ctrl_mbox_ifstats_offset = ctrl_mbox->barmem_sz;
+
+ return 0;
}

-void octep_set_link_status(struct octep_device *oct, bool up)
+int octep_ctrl_net_get_link_status(struct octep_device *oct)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;
+ int err;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
- req.link.cmd = OCTEP_CTRL_NET_CMD_SET;
- req.link.state = (up) ? OCTEP_CTRL_NET_STATE_UP : OCTEP_CTRL_NET_STATE_DOWN;
+ init_send_req(&d.msg, (void *)req, state_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
+ req->link.cmd = OCTEP_CTRL_NET_CMD_GET;
+ err = octep_send_mbox_req(oct, &d, true);
+ if (err < 0)
+ return err;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
- msg.msg = &req;
- octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
+ return d.data.resp.link.state;
}

-void octep_set_rx_state(struct octep_device *oct, bool up)
+int octep_ctrl_net_set_link_status(struct octep_device *oct, bool up,
+ bool wait_for_response)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_RX_STATE;
- req.link.cmd = OCTEP_CTRL_NET_CMD_SET;
- req.link.state = (up) ? OCTEP_CTRL_NET_STATE_UP : OCTEP_CTRL_NET_STATE_DOWN;
+ init_send_req(&d.msg, req, state_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
+ req->link.cmd = OCTEP_CTRL_NET_CMD_SET;
+ req->link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
+ OCTEP_CTRL_NET_STATE_DOWN;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
- msg.msg = &req;
- octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
+ return octep_send_mbox_req(oct, &d, wait_for_response);
}

-int octep_get_mac_addr(struct octep_device *oct, u8 *addr)
+int octep_ctrl_net_set_rx_state(struct octep_device *oct, bool up,
+ bool wait_for_response)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_net_h2f_resp *resp;
- struct octep_ctrl_mbox_msg msg = {};
- int err;
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
- req.link.cmd = OCTEP_CTRL_NET_CMD_GET;
+ init_send_req(&d.msg, req, state_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_RX_STATE;
+ req->link.cmd = OCTEP_CTRL_NET_CMD_SET;
+ req->link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
+ OCTEP_CTRL_NET_STATE_DOWN;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MAC_REQ_SZW;
- msg.msg = &req;
- err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
- if (err)
+ return octep_send_mbox_req(oct, &d, wait_for_response);
+}
+
+int octep_ctrl_net_get_mac_addr(struct octep_device *oct, u8 *addr)
+{
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;
+ int err;
+
+ init_send_req(&d.msg, req, mac_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
+ req->link.cmd = OCTEP_CTRL_NET_CMD_GET;
+ err = octep_send_mbox_req(oct, &d, true);
+ if (err < 0)
return err;

- resp = (struct octep_ctrl_net_h2f_resp *)&req;
- memcpy(addr, resp->mac.addr, ETH_ALEN);
+ memcpy(addr, d.data.resp.mac.addr, ETH_ALEN);

- return err;
+ return 0;
}

-int octep_set_mac_addr(struct octep_device *oct, u8 *addr)
+int octep_ctrl_net_set_mac_addr(struct octep_device *oct, u8 *addr,
+ bool wait_for_response)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
-
- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
- req.mac.cmd = OCTEP_CTRL_NET_CMD_SET;
- memcpy(&req.mac.addr, addr, ETH_ALEN);
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MAC_REQ_SZW;
- msg.msg = &req;
+ init_send_req(&d.msg, req, mac_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
+ req->mac.cmd = OCTEP_CTRL_NET_CMD_SET;
+ memcpy(&req->mac.addr, addr, ETH_ALEN);

- return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
+ return octep_send_mbox_req(oct, &d, wait_for_response);
}

-int octep_set_mtu(struct octep_device *oct, int mtu)
+int octep_ctrl_net_set_mtu(struct octep_device *oct, int mtu,
+ bool wait_for_response)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU;
- req.mtu.cmd = OCTEP_CTRL_NET_CMD_SET;
- req.mtu.val = mtu;
+ init_send_req(&d.msg, req, mtu_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU;
+ req->mtu.cmd = OCTEP_CTRL_NET_CMD_SET;
+ req->mtu.val = mtu;

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MTU_REQ_SZW;
- msg.msg = &req;
-
- return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
+ return octep_send_mbox_req(oct, &d, wait_for_response);
}

-int octep_get_if_stats(struct octep_device *oct)
+int octep_ctrl_net_get_if_stats(struct octep_device *oct)
{
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;
void __iomem *iface_rx_stats;
void __iomem *iface_tx_stats;
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
int err;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_GET_IF_STATS;
- req.mac.cmd = OCTEP_CTRL_NET_CMD_GET;
- req.get_stats.offset = oct->ctrl_mbox_ifstats_offset;
-
- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_GET_STATS_REQ_SZW;
- msg.msg = &req;
- err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
- if (err)
+ init_send_req(&d.msg, req, get_stats_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_GET_IF_STATS;
+ req->get_stats.offset = oct->ctrl_mbox_ifstats_offset;
+ err = octep_send_mbox_req(oct, &d, true);
+ if (err < 0)
return err;

iface_rx_stats = oct->ctrl_mbox.barmem + oct->ctrl_mbox_ifstats_offset;
@@ -144,51 +204,101 @@ int octep_get_if_stats(struct octep_device *oct)
memcpy_fromio(&oct->iface_rx_stats, iface_rx_stats, sizeof(struct octep_iface_rx_stats));
memcpy_fromio(&oct->iface_tx_stats, iface_tx_stats, sizeof(struct octep_iface_tx_stats));

- return err;
+ return 0;
}

-int octep_get_link_info(struct octep_device *oct)
+int octep_ctrl_net_get_link_info(struct octep_device *oct)
{
- struct octep_ctrl_net_h2f_req req = {};
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;
struct octep_ctrl_net_h2f_resp *resp;
- struct octep_ctrl_mbox_msg msg = {};
int err;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
- req.mac.cmd = OCTEP_CTRL_NET_CMD_GET;
-
- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_LINK_INFO_REQ_SZW;
- msg.msg = &req;
- err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
- if (err)
+ init_send_req(&d.msg, req, link_info_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
+ req->link_info.cmd = OCTEP_CTRL_NET_CMD_GET;
+ err = octep_send_mbox_req(oct, &d, true);
+ if (err < 0)
return err;

- resp = (struct octep_ctrl_net_h2f_resp *)&req;
+ resp = &d.data.resp;
oct->link_info.supported_modes = resp->link_info.supported_modes;
oct->link_info.advertised_modes = resp->link_info.advertised_modes;
oct->link_info.autoneg = resp->link_info.autoneg;
oct->link_info.pause = resp->link_info.pause;
oct->link_info.speed = resp->link_info.speed;

- return err;
+ return 0;
+}
+
+int octep_ctrl_net_set_link_info(struct octep_device *oct,
+ struct octep_iface_link_info *link_info,
+ bool wait_for_response)
+{
+ struct octep_ctrl_net_wait_data d = {0};
+ struct octep_ctrl_net_h2f_req *req = &d.data.req;
+
+ init_send_req(&d.msg, req, link_info_sz);
+ req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
+ req->link_info.cmd = OCTEP_CTRL_NET_CMD_SET;
+ req->link_info.info.advertised_modes = link_info->advertised_modes;
+ req->link_info.info.autoneg = link_info->autoneg;
+ req->link_info.info.pause = link_info->pause;
+ req->link_info.info.speed = link_info->speed;
+
+ return octep_send_mbox_req(oct, &d, wait_for_response);
}

-int octep_set_link_info(struct octep_device *oct, struct octep_iface_link_info *link_info)
+static void process_mbox_resp(struct octep_device *oct,
+ struct octep_ctrl_mbox_msg *msg)
{
- struct octep_ctrl_net_h2f_req req = {};
- struct octep_ctrl_mbox_msg msg = {};
+ struct octep_ctrl_net_wait_data *pos, *n;
+
+ list_for_each_entry_safe(pos, n, &oct->ctrl_req_wait_list, list) {
+ if (pos->msg.hdr.s.msg_id == msg->hdr.s.msg_id) {
+ memcpy(&pos->data.resp,
+ msg->sg_list[0].msg,
+ msg->hdr.s.sz);
+ pos->done = 1;
+ wake_up_interruptible_all(&oct->ctrl_req_wait_q);
+ break;
+ }
+ }
+}
+
+void octep_ctrl_net_recv_fw_messages(struct octep_device *oct)
+{
+ static u16 msg_sz = sizeof(union octep_ctrl_net_max_data);
+ union octep_ctrl_net_max_data data = {0};
+ struct octep_ctrl_mbox_msg msg = {0};
+ int ret;
+
+ msg.hdr.s.sz = msg_sz;
+ msg.sg_num = 1;
+ msg.sg_list[0].sz = msg_sz;
+ msg.sg_list[0].msg = &data;
+ while (true) {
+ /* mbox will overwrite msg.hdr.s.sz so initialize it */
+ msg.hdr.s.sz = msg_sz;
+ ret = octep_ctrl_mbox_recv(&oct->ctrl_mbox, (struct octep_ctrl_mbox_msg *)&msg);
+ if (ret < 0)
+ break;
+
+ if (msg.hdr.s.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
+ process_mbox_resp(oct, &msg);
+ }
+}
+
+int octep_ctrl_net_uninit(struct octep_device *oct)
+{
+ struct octep_ctrl_net_wait_data *pos, *n;
+
+ list_for_each_entry_safe(pos, n, &oct->ctrl_req_wait_list, list)
+ pos->done = 1;

- req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
- req.link_info.cmd = OCTEP_CTRL_NET_CMD_SET;
- req.link_info.info.advertised_modes = link_info->advertised_modes;
- req.link_info.info.autoneg = link_info->autoneg;
- req.link_info.info.pause = link_info->pause;
- req.link_info.info.speed = link_info->speed;
+ wake_up_interruptible_all(&oct->ctrl_req_wait_q);

- msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
- msg.hdr.sizew = OCTEP_CTRL_NET_H2F_LINK_INFO_REQ_SZW;
- msg.msg = &req;
+ octep_ctrl_mbox_uninit(&oct->ctrl_mbox);

- return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
+ return 0;
}
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
index f23b58381322..aba373ec28a4 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
@@ -45,15 +45,18 @@ enum octep_ctrl_net_f2h_cmd {
OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS,
};

-struct octep_ctrl_net_req_hdr {
- /* sender id */
- u16 sender;
- /* receiver id */
- u16 receiver;
- /* octep_ctrl_net_h2t_cmd */
- u16 cmd;
- /* reserved */
- u16 rsvd0;
+union octep_ctrl_net_req_hdr {
+ u64 words[1];
+ struct {
+ /* sender id */
+ u16 sender;
+ /* receiver id */
+ u16 receiver;
+ /* octep_ctrl_net_h2t_cmd */
+ u16 cmd;
+ /* reserved */
+ u16 rsvd0;
+ } s;
};

/* get/set mtu request */
@@ -110,7 +113,7 @@ struct octep_ctrl_net_h2f_req_cmd_link_info {

/* Host to fw request data */
struct octep_ctrl_net_h2f_req {
- struct octep_ctrl_net_req_hdr hdr;
+ union octep_ctrl_net_req_hdr hdr;
union {
struct octep_ctrl_net_h2f_req_cmd_mtu mtu;
struct octep_ctrl_net_h2f_req_cmd_mac mac;
@@ -121,15 +124,18 @@ struct octep_ctrl_net_h2f_req {
};
} __packed;

-struct octep_ctrl_net_resp_hdr {
- /* sender id */
- u16 sender;
- /* receiver id */
- u16 receiver;
- /* octep_ctrl_net_h2t_cmd */
- u16 cmd;
- /* octep_ctrl_net_reply */
- u16 reply;
+union octep_ctrl_net_resp_hdr {
+ u64 words[1];
+ struct {
+ /* sender id */
+ u16 sender;
+ /* receiver id */
+ u16 receiver;
+ /* octep_ctrl_net_h2t_cmd */
+ u16 cmd;
+ /* octep_ctrl_net_reply */
+ u16 reply;
+ } s;
};

/* get mtu response */
@@ -152,7 +158,7 @@ struct octep_ctrl_net_h2f_resp_cmd_state {

/* Host to fw response data */
struct octep_ctrl_net_h2f_resp {
- struct octep_ctrl_net_resp_hdr hdr;
+ union octep_ctrl_net_resp_hdr hdr;
union {
struct octep_ctrl_net_h2f_resp_cmd_mtu mtu;
struct octep_ctrl_net_h2f_resp_cmd_mac mac;
@@ -170,7 +176,7 @@ struct octep_ctrl_net_f2h_req_cmd_state {

/* Fw to host request data */
struct octep_ctrl_net_f2h_req {
- struct octep_ctrl_net_req_hdr hdr;
+ union octep_ctrl_net_req_hdr hdr;
union {
struct octep_ctrl_net_f2h_req_cmd_state link;
};
@@ -178,56 +184,34 @@ struct octep_ctrl_net_f2h_req {

/* Fw to host response data */
struct octep_ctrl_net_f2h_resp {
- struct octep_ctrl_net_resp_hdr hdr;
+ union octep_ctrl_net_resp_hdr hdr;
};

-/* Size of host to fw octep_ctrl_mbox queue element */
-union octep_ctrl_net_h2f_data_sz {
+/* Max data size to be transferred over mbox */
+union octep_ctrl_net_max_data {
struct octep_ctrl_net_h2f_req h2f_req;
struct octep_ctrl_net_h2f_resp h2f_resp;
-};
-
-/* Size of fw to host octep_ctrl_mbox queue element */
-union octep_ctrl_net_f2h_data_sz {
struct octep_ctrl_net_f2h_req f2h_req;
struct octep_ctrl_net_f2h_resp f2h_resp;
};

-/* size of host to fw data in words */
-#define OCTEP_CTRL_NET_H2F_DATA_SZW ((sizeof(union octep_ctrl_net_h2f_data_sz)) / \
- (sizeof(unsigned long)))
-
-/* size of fw to host data in words */
-#define OCTEP_CTRL_NET_F2H_DATA_SZW ((sizeof(union octep_ctrl_net_f2h_data_sz)) / \
- (sizeof(unsigned long)))
-
-/* size in words of get/set mtu request */
-#define OCTEP_CTRL_NET_H2F_MTU_REQ_SZW 2
-/* size in words of get/set mac request */
-#define OCTEP_CTRL_NET_H2F_MAC_REQ_SZW 2
-/* size in words of get stats request */
-#define OCTEP_CTRL_NET_H2F_GET_STATS_REQ_SZW 2
-/* size in words of get/set state request */
-#define OCTEP_CTRL_NET_H2F_STATE_REQ_SZW 2
-/* size in words of get/set link info request */
-#define OCTEP_CTRL_NET_H2F_LINK_INFO_REQ_SZW 4
-
-/* size in words of get mtu response */
-#define OCTEP_CTRL_NET_H2F_GET_MTU_RESP_SZW 2
-/* size in words of set mtu response */
-#define OCTEP_CTRL_NET_H2F_SET_MTU_RESP_SZW 1
-/* size in words of get mac response */
-#define OCTEP_CTRL_NET_H2F_GET_MAC_RESP_SZW 2
-/* size in words of set mac response */
-#define OCTEP_CTRL_NET_H2F_SET_MAC_RESP_SZW 1
-/* size in words of get state request */
-#define OCTEP_CTRL_NET_H2F_GET_STATE_RESP_SZW 2
-/* size in words of set state request */
-#define OCTEP_CTRL_NET_H2F_SET_STATE_RESP_SZW 1
-/* size in words of get link info request */
-#define OCTEP_CTRL_NET_H2F_GET_LINK_INFO_RESP_SZW 4
-/* size in words of set link info request */
-#define OCTEP_CTRL_NET_H2F_SET_LINK_INFO_RESP_SZW 1
+struct octep_ctrl_net_wait_data {
+ struct list_head list;
+ int done;
+ struct octep_ctrl_mbox_msg msg;
+ union {
+ struct octep_ctrl_net_h2f_req req;
+ struct octep_ctrl_net_h2f_resp resp;
+ } data;
+};
+
+/** Initialize data for ctrl net.
+ *
+ * @param oct: non-null pointer to struct octep_device.
+ *
+ * return value: 0 on success, -errno on error.
+ */
+int octep_ctrl_net_init(struct octep_device *oct);

/** Get link status from firmware.
*
@@ -235,21 +219,29 @@ union octep_ctrl_net_f2h_data_sz {
*
* return value: link status 0=down, 1=up.
*/
-int octep_get_link_status(struct octep_device *oct);
+int octep_ctrl_net_get_link_status(struct octep_device *oct);

/** Set link status in firmware.
*
* @param oct: non-null pointer to struct octep_device.
* @param up: boolean status.
+ * @param wait_for_response: poll for response.
+ *
+ * return value: 0 on success, -errno on failure
*/
-void octep_set_link_status(struct octep_device *oct, bool up);
+int octep_ctrl_net_set_link_status(struct octep_device *oct, bool up,
+ bool wait_for_response);

/** Set rx state in firmware.
*
* @param oct: non-null pointer to struct octep_device.
* @param up: boolean status.
+ * @param wait_for_response: poll for response.
+ *
+ * return value: 0 on success, -errno on failure.
*/
-void octep_set_rx_state(struct octep_device *oct, bool up);
+int octep_ctrl_net_set_rx_state(struct octep_device *oct, bool up,
+ bool wait_for_response);

/** Get mac address from firmware.
*
@@ -258,21 +250,29 @@ void octep_set_rx_state(struct octep_device *oct, bool up);
*
* return value: 0 on success, -errno on failure.
*/
-int octep_get_mac_addr(struct octep_device *oct, u8 *addr);
+int octep_ctrl_net_get_mac_addr(struct octep_device *oct, u8 *addr);

/** Set mac address in firmware.
*
* @param oct: non-null pointer to struct octep_device.
* @param addr: non-null pointer to mac address.
+ * @param wait_for_response: poll for response.
+ *
+ * return value: 0 on success, -errno on failure.
*/
-int octep_set_mac_addr(struct octep_device *oct, u8 *addr);
+int octep_ctrl_net_set_mac_addr(struct octep_device *oct, u8 *addr,
+ bool wait_for_response);

/** Set mtu in firmware.
*
* @param oct: non-null pointer to struct octep_device.
* @param mtu: mtu.
+ * @param wait_for_response: poll for response.
+ *
+ * return value: 0 on success, -errno on failure.
*/
-int octep_set_mtu(struct octep_device *oct, int mtu);
+int octep_ctrl_net_set_mtu(struct octep_device *oct, int mtu,
+ bool wait_for_response);

/** Get interface statistics from firmware.
*
@@ -280,7 +280,7 @@ int octep_set_mtu(struct octep_device *oct, int mtu);
*
* return value: 0 on success, -errno on failure.
*/
-int octep_get_if_stats(struct octep_device *oct);
+int octep_ctrl_net_get_if_stats(struct octep_device *oct);

/** Get link info from firmware.
*
@@ -288,12 +288,32 @@ int octep_get_if_stats(struct octep_device *oct);
*
* return value: 0 on success, -errno on failure.
*/
-int octep_get_link_info(struct octep_device *oct);
+int octep_ctrl_net_get_link_info(struct octep_device *oct);

/** Set link info in firmware.
*
* @param oct: non-null pointer to struct octep_device.
+ * @param link_info: non-null pointer to struct octep_iface_link_info.
+ * @param wait_for_response: poll for response.
+ *
+ * return value: 0 on success, -errno on failure.
+ */
+int octep_ctrl_net_set_link_info(struct octep_device *oct,
+ struct octep_iface_link_info *link_info,
+ bool wait_for_response);
+
+/** Poll for firmware messages and process them.
+ *
+ * @param oct: non-null pointer to struct octep_device.
+ */
+void octep_ctrl_net_recv_fw_messages(struct octep_device *oct);
+
+/** Uninitialize data for ctrl net.
+ *
+ * @param oct: non-null pointer to struct octep_device.
+ *
+ * return value: 0 on success, -errno on error.
*/
-int octep_set_link_info(struct octep_device *oct, struct octep_iface_link_info *link_info);
+int octep_ctrl_net_uninit(struct octep_device *oct);

#endif /* __OCTEP_CTRL_NET_H__ */
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
index 87ef129b269a..a1ddb64791f2 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ethtool.c
@@ -150,7 +150,7 @@ octep_get_ethtool_stats(struct net_device *netdev,
rx_packets = 0;
rx_bytes = 0;

- octep_get_if_stats(oct);
+ octep_ctrl_net_get_if_stats(oct);
iface_tx_stats = &oct->iface_tx_stats;
iface_rx_stats = &oct->iface_rx_stats;

@@ -283,7 +283,7 @@ static int octep_get_link_ksettings(struct net_device *netdev,
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_zero_link_mode(cmd, advertising);

- octep_get_link_info(oct);
+ octep_ctrl_net_get_link_info(oct);

advertised_modes = oct->link_info.advertised_modes;
supported_modes = oct->link_info.supported_modes;
@@ -439,7 +439,7 @@ static int octep_set_link_ksettings(struct net_device *netdev,
link_info_new.speed = cmd->base.speed;
link_info_new.autoneg = autoneg;

- err = octep_set_link_info(oct, &link_info_new);
+ err = octep_ctrl_net_set_link_info(oct, &link_info_new, true);
if (err)
return err;

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index a3e4d9355681..43fff8979854 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -507,11 +507,8 @@ static int octep_open(struct net_device *netdev)
octep_napi_enable(oct);

oct->link_info.admin_up = 1;
- octep_set_rx_state(oct, true);
-
- ret = octep_get_link_status(oct);
- if (!ret)
- octep_set_link_status(oct, true);
+ octep_ctrl_net_set_rx_state(oct, true, false);
+ octep_ctrl_net_set_link_status(oct, true, false);
oct->poll_non_ioq_intr = false;

/* Enable the input and output queues for this Octeon device */
@@ -522,7 +519,7 @@ static int octep_open(struct net_device *netdev)

octep_oq_dbell_init(oct);

- ret = octep_get_link_status(oct);
+ ret = octep_ctrl_net_get_link_status(oct);
if (ret > 0)
octep_link_up(netdev);

@@ -552,14 +549,14 @@ static int octep_stop(struct net_device *netdev)

netdev_info(netdev, "Stopping the device ...\n");

+ octep_ctrl_net_set_link_status(oct, false, false);
+ octep_ctrl_net_set_rx_state(oct, false, false);
+
/* Stop Tx from stack */
netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
netif_tx_disable(netdev);

- octep_set_link_status(oct, false);
- octep_set_rx_state(oct, false);
-
oct->link_info.admin_up = 0;
oct->link_info.oper_up = 0;

@@ -761,7 +758,9 @@ static void octep_get_stats64(struct net_device *netdev,
struct octep_device *oct = netdev_priv(netdev);
int q;

- octep_get_if_stats(oct);
+ if (netif_running(netdev))
+ octep_ctrl_net_get_if_stats(oct);
+
tx_packets = 0;
tx_bytes = 0;
rx_packets = 0;
@@ -832,7 +831,7 @@ static int octep_set_mac(struct net_device *netdev, void *p)
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;

- err = octep_set_mac_addr(oct, addr->sa_data);
+ err = octep_ctrl_net_set_mac_addr(oct, addr->sa_data, true);
if (err)
return err;

@@ -852,7 +851,7 @@ static int octep_change_mtu(struct net_device *netdev, int new_mtu)
if (link_info->mtu == new_mtu)
return 0;

- err = octep_set_mtu(oct, new_mtu);
+ err = octep_ctrl_net_set_mtu(oct, new_mtu, true);
if (!err) {
oct->link_info.mtu = new_mtu;
netdev->mtu = new_mtu;
@@ -904,34 +903,8 @@ static void octep_ctrl_mbox_task(struct work_struct *work)
{
struct octep_device *oct = container_of(work, struct octep_device,
ctrl_mbox_task);
- struct net_device *netdev = oct->netdev;
- struct octep_ctrl_net_f2h_req req = {};
- struct octep_ctrl_mbox_msg msg;
- int ret = 0;
-
- msg.msg = &req;
- while (true) {
- ret = octep_ctrl_mbox_recv(&oct->ctrl_mbox, &msg);
- if (ret)
- break;
-
- switch (req.hdr.cmd) {
- case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
- if (netif_running(netdev)) {
- if (req.link.state) {
- dev_info(&oct->pdev->dev, "netif_carrier_on\n");
- netif_carrier_on(netdev);
- } else {
- dev_info(&oct->pdev->dev, "netif_carrier_off\n");
- netif_carrier_off(netdev);
- }
- }
- break;
- default:
- pr_info("Unknown mbox req : %u\n", req.hdr.cmd);
- break;
- }
- }
+
+ octep_ctrl_net_recv_fw_messages(oct);
}

static const char *octep_devid_to_str(struct octep_device *oct)
@@ -955,9 +928,8 @@ static const char *octep_devid_to_str(struct octep_device *oct)
*/
int octep_device_setup(struct octep_device *oct)
{
- struct octep_ctrl_mbox *ctrl_mbox;
struct pci_dev *pdev = oct->pdev;
- int i, ret;
+ int i;

/* allocate memory for oct->conf */
oct->conf = kzalloc(sizeof(*oct->conf), GFP_KERNEL);
@@ -992,20 +964,7 @@ int octep_device_setup(struct octep_device *oct)

oct->pkind = CFG_GET_IQ_PKIND(oct->conf);

- /* Initialize control mbox */
- ctrl_mbox = &oct->ctrl_mbox;
- ctrl_mbox->barmem = CFG_GET_CTRL_MBOX_MEM_ADDR(oct->conf);
- ret = octep_ctrl_mbox_init(ctrl_mbox);
- if (ret) {
- dev_err(&pdev->dev, "Failed to initialize control mbox\n");
- goto unsupported_dev;
- }
- oct->ctrl_mbox_ifstats_offset = OCTEP_CTRL_MBOX_SZ(ctrl_mbox->h2fq.elem_sz,
- ctrl_mbox->h2fq.elem_cnt,
- ctrl_mbox->f2hq.elem_sz,
- ctrl_mbox->f2hq.elem_cnt);
-
- return 0;
+ return octep_ctrl_net_init(oct);

unsupported_dev:
for (i = 0; i < OCTEP_MMIO_REGIONS; i++)
@@ -1033,7 +992,7 @@ static void octep_device_cleanup(struct octep_device *oct)
oct->mbox[i] = NULL;
}

- octep_ctrl_mbox_uninit(&oct->ctrl_mbox);
+ octep_ctrl_net_uninit(oct);

oct->hw_ops.soft_reset(oct);
for (i = 0; i < OCTEP_MMIO_REGIONS; i++) {
@@ -1143,7 +1102,8 @@ static int octep_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->max_mtu = OCTEP_MAX_MTU;
netdev->mtu = OCTEP_DEFAULT_MTU;

- err = octep_get_mac_addr(octep_dev, octep_dev->mac_addr);
+ err = octep_ctrl_net_get_mac_addr(octep_dev,
+ octep_dev->mac_addr);
if (err) {
dev_err(&pdev->dev, "Failed to get mac address\n");
goto register_dev_err;
--
2.36.0