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octeon_ep: add separate mailbox command and response queues

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Veerasenareddy Burru 2023-03-24 10:46:59 -07:00 committed by David S. Miller
parent 7c05d3d06c
commit 577f0d1b1c
6 changed files with 531 additions and 413 deletions

270
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)
/* 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_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_TOTAL_INFO_SZ (OCTEP_CTRL_MBOX_INFO_SZ + \
OCTEP_CTRL_MBOX_H2FQ_INFO_SZ + \
OCTEP_CTRL_MBOX_F2HQ_INFO_SZ)
#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_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_Q_OFFSET(m, i) ((m) + \
(sizeof(struct octep_ctrl_mbox_msg) * (i)))
#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)
static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 mask)
#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;
if (octep_ctrl_mbox_circq_space(pi, ci, q->sz) < (msg->hdr.s.sz + mbox_hdr_sz)) {
mutex_unlock(&mbox->f2hq_lock);
return -EAGAIN;
}
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);
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;
}
}
mbuf = (u64 *)msg->msg;
for (i = 1; i <= msg->hdr.sizew; i++)
*mbuf++ = readq(qidx + (i * 8));
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);
}
}
}
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)
q_depth = octep_ctrl_mbox_circq_depth(pi, ci, q->sz);
if (q_depth < mbox_hdr_sz) {
mutex_unlock(&mbox->f2hq_lock);
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));
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;

88
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.
*/

344
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;
}
void octep_set_link_status(struct octep_device *oct, bool up)
int octep_ctrl_net_init(struct octep_device *oct)
{
struct octep_ctrl_net_h2f_req req = {};
struct octep_ctrl_mbox_msg msg = {};
struct octep_ctrl_mbox *ctrl_mbox;
struct pci_dev *pdev = oct->pdev;
int ret;
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_waitqueue_head(&oct->ctrl_req_wait_q);
INIT_LIST_HEAD(&oct->ctrl_req_wait_list);
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);
/* 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_rx_state(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 = {};
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;
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);
}
int octep_get_mac_addr(struct octep_device *oct, u8 *addr)
{
struct octep_ctrl_net_h2f_req req = {};
struct octep_ctrl_net_h2f_resp *resp;
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_MAC;
req.link.cmd = OCTEP_CTRL_NET_CMD_GET;
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)
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;
resp = (struct octep_ctrl_net_h2f_resp *)&req;
memcpy(addr, resp->mac.addr, ETH_ALEN);
return err;
return d.data.resp.link.state;
}
int octep_set_mac_addr(struct octep_device *oct, u8 *addr)
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_MAC;
req.mac.cmd = OCTEP_CTRL_NET_CMD_SET;
memcpy(&req.mac.addr, addr, ETH_ALEN);
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_MAC_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_set_mtu(struct octep_device *oct, int mtu)
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_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, 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_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_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;
memcpy(addr, d.data.resp.mac.addr, ETH_ALEN);
return 0;
}
int octep_ctrl_net_set_mac_addr(struct octep_device *oct, u8 *addr,
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, 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_send_mbox_req(oct, &d, wait_for_response);
}
int octep_ctrl_net_set_mtu(struct octep_device *oct, int mtu,
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, mtu_sz);
req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU;
req->mtu.cmd = OCTEP_CTRL_NET_CMD_SET;
req->mtu.val = mtu;
return octep_send_mbox_req(oct, &d, wait_for_response);
}
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_set_link_info(struct octep_device *oct, struct octep_iface_link_info *link_info)
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_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_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;
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;
msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
msg.hdr.sizew = OCTEP_CTRL_NET_H2F_LINK_INFO_REQ_SZW;
msg.msg = &req;
return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
return octep_send_mbox_req(oct, &d, wait_for_response);
}
static void process_mbox_resp(struct octep_device *oct,
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;
wake_up_interruptible_all(&oct->ctrl_req_wait_q);
octep_ctrl_mbox_uninit(&oct->ctrl_mbox);
return 0;
}

162
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)))
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;
};
/* 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
/** 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_set_link_info(struct octep_device *oct, struct octep_iface_link_info *link_info);
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_ctrl_net_uninit(struct octep_device *oct);
#endif /* __OCTEP_CTRL_NET_H__ */

6
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;

74
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;