qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Akihiko Odaki <akihiko.odaki@daynix.com>
To: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Cc: qemu-devel@nongnu.org, Jason Wang <jasowang@redhat.com>,
	Dmitry Fleytman <dmitry.fleytman@gmail.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Subject: Re: [PATCH v2 2/9] igb: handle PF/VF reset properly
Date: Mon, 30 Jan 2023 23:14:28 +0900	[thread overview]
Message-ID: <fa54086a-758c-4dbf-aa3b-93b223d7835b@daynix.com> (raw)
In-Reply-To: <20230130132304.2347-3-sriram.yagnaraman@est.tech>

On 2023/01/30 22:22, Sriram Yagnaraman wrote:
> Use PFRSTD to reset RSTI bit for VFs, and raise VFLRE interrupt when VF
> is reset.
> 
> Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
> ---
>   hw/net/e1000x_regs.h |  1 +
>   hw/net/igb_core.c    | 33 +++++++++++++++++++++------------
>   hw/net/trace-events  |  2 ++
>   3 files changed, 24 insertions(+), 12 deletions(-)
> 
> diff --git a/hw/net/e1000x_regs.h b/hw/net/e1000x_regs.h
> index fb5b861135..bb3fb36b8d 100644
> --- a/hw/net/e1000x_regs.h
> +++ b/hw/net/e1000x_regs.h
> @@ -548,6 +548,7 @@
>   
>   #define E1000_CTRL_EXT_ASDCHK  0x00001000 /* auto speed detection check */
>   #define E1000_CTRL_EXT_EE_RST  0x00002000 /* EEPROM reset */
> +#define E1000_CTRL_EXT_PFRSTD  0x00004000 /* PF reset done indication */

Please add this to igb_regs.h as it is specific to igb.

>   #define E1000_CTRL_EXT_LINK_EN 0x00010000 /* enable link status from external LINK_0 and LINK_1 pins */
>   #define E1000_CTRL_EXT_DRV_LOAD 0x10000000 /* Driver loaded bit for FW */
>   #define E1000_CTRL_EXT_EIAME   0x01000000
> diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c
> index abeb9c7889..9bd53cc25f 100644
> --- a/hw/net/igb_core.c
> +++ b/hw/net/igb_core.c
> @@ -1902,14 +1902,6 @@ static void igb_set_eims(IGBCore *core, int index, uint32_t val)
>       igb_update_interrupt_state(core);
>   }
>   
> -static void igb_vf_reset(IGBCore *core, uint16_t vfn)
> -{
> -    /* TODO: Reset of the queue enable and the interrupt registers of the VF. */
> -
> -    core->mac[V2PMAILBOX0 + vfn] &= ~E1000_V2PMAILBOX_RSTI;
> -    core->mac[V2PMAILBOX0 + vfn] = E1000_V2PMAILBOX_RSTD;
> -}
> -
>   static void mailbox_interrupt_to_vf(IGBCore *core, uint16_t vfn)
>   {
>       uint32_t ent = core->mac[VTIVAR_MISC + vfn];
> @@ -1987,6 +1979,17 @@ static void igb_set_vfmailbox(IGBCore *core, int index, uint32_t val)
>       }
>   }
>   
> +static void igb_vf_reset(IGBCore *core, uint16_t vfn)
> +{
> +    /* disable Rx and Tx for the VF*/
> +    core->mac[VFTE] &= ~BIT(vfn);
> +    core->mac[VFRE] &= ~BIT(vfn);
> +    /* indicate VF reset to PF */
> +    core->mac[VFLRE] |= BIT(vfn);
> +    /* VFLRE and mailbox use the same interrupt cause */
> +    mailbox_interrupt_to_pf(core);
> +}
> +
>   static void igb_w1c(IGBCore *core, int index, uint32_t val)
>   {
>       core->mac[index] &= ~val;
> @@ -2241,14 +2244,20 @@ igb_set_status(IGBCore *core, int index, uint32_t val)
>   static void
>   igb_set_ctrlext(IGBCore *core, int index, uint32_t val)
>   {
> -    trace_e1000e_link_set_ext_params(!!(val & E1000_CTRL_EXT_ASDCHK),
> -                                     !!(val & E1000_CTRL_EXT_SPD_BYPS));
> -
> -    /* TODO: PFRSTD */
> +    trace_igb_link_set_ext_params(!!(val & E1000_CTRL_EXT_ASDCHK),
> +                                  !!(val & E1000_CTRL_EXT_SPD_BYPS),
> +                                  !!(val & E1000_CTRL_EXT_PFRSTD));
>   
>       /* Zero self-clearing bits */
>       val &= ~(E1000_CTRL_EXT_ASDCHK | E1000_CTRL_EXT_EE_RST);
>       core->mac[CTRL_EXT] = val;
> +
> +    if (core->mac[CTRL_EXT] & E1000_CTRL_EXT_PFRSTD) {
> +        for (int vfn = 0; vfn < IGB_MAX_VF_FUNCTIONS; vfn++) {
> +            core->mac[V2PMAILBOX0 + vfn] &= ~E1000_V2PMAILBOX_RSTI;
> +            core->mac[V2PMAILBOX0 + vfn] |= E1000_V2PMAILBOX_RSTD;
> +        }
> +    }
>   }
>   
>   static void
> diff --git a/hw/net/trace-events b/hw/net/trace-events
> index 2f791b9b57..e94172e748 100644
> --- a/hw/net/trace-events
> +++ b/hw/net/trace-events
> @@ -281,6 +281,8 @@ igb_core_mdic_read_unhandled(uint32_t addr) "MDIC READ: PHY[%u] UNHANDLED"
>   igb_core_mdic_write(uint32_t addr, uint32_t data) "MDIC WRITE: PHY[%u] = 0x%x"
>   igb_core_mdic_write_unhandled(uint32_t addr) "MDIC WRITE: PHY[%u] UNHANDLED"
>   
> +igb_link_set_ext_params(bool asd_check, bool speed_select_bypass, bool pfrstd) "Set extended link params: ASD check: %d, Speed select bypass: %d, PF reset done: %d"
> +
>   igb_rx_desc_buff_size(uint32_t b) "buffer size: %u"
>   igb_rx_desc_buff_write(uint64_t addr, uint16_t offset, const void* source, uint32_t len) "addr: 0x%"PRIx64", offset: %u, from: %p, length: %u"
>   


  reply	other threads:[~2023-01-30 14:15 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-30 13:22 [PATCH v2 0/9] igb: merge changes from <20221229190817.25500-1-sriram.yagnaraman@est.tech> Sriram Yagnaraman
2023-01-30 13:22 ` [PATCH v2 1/9] MAINTAINERS: Add Sriram Yagnaraman as a igb reviewer Sriram Yagnaraman
2023-01-30 13:22 ` [PATCH v2 2/9] igb: handle PF/VF reset properly Sriram Yagnaraman
2023-01-30 14:14   ` Akihiko Odaki [this message]
2023-01-30 13:22 ` [PATCH v2 3/9] igb: implement VFRE and VFTE registers Sriram Yagnaraman
2023-01-30 14:19   ` Akihiko Odaki
2023-01-30 14:23     ` Akihiko Odaki
2023-01-30 13:22 ` [PATCH v2 4/9] igb: add ICR_RXDW Sriram Yagnaraman
2023-01-30 13:23 ` [PATCH v2 5/9] igb: check oversized packets for VMDq Sriram Yagnaraman
2023-01-30 14:31   ` Akihiko Odaki
2023-01-30 13:23 ` [PATCH v2 6/9] igb: respect E1000_VMOLR_RSSE Sriram Yagnaraman
2023-01-30 13:23 ` [PATCH v2 7/9] igb: implement VF Tx and Rx stats Sriram Yagnaraman
2023-01-30 13:23 ` [PATCH v2 8/9] igb: respect VT_CTL ignore MAC field Sriram Yagnaraman
2023-01-30 13:23 ` [PATCH v2 9/9] igb: respect VMVIR and VMOLR for VLAN Sriram Yagnaraman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=fa54086a-758c-4dbf-aa3b-93b223d7835b@daynix.com \
    --to=akihiko.odaki@daynix.com \
    --cc=dmitry.fleytman@gmail.com \
    --cc=jasowang@redhat.com \
    --cc=marcel.apfelbaum@gmail.com \
    --cc=mst@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=sriram.yagnaraman@est.tech \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).