- Openamp-system-reference - lists.openampproject.org

Calling for agenda: 2023-02-22 OpenAMP System Reference

by Chan King Choy, Nathalie

Hi all, Sorry for the delay - catching up after the long weekend... Please let us know your requests for topics. Here is what I collected so far: * What does everyone want to get done in the next quarter? * Can refer to Dec webinar future work slides<https://docs.google.com/presentation/d/1QE0zyCxm54KoTDuWKS0Xh-mml3SneQjecDg…> to seed your thinking. Thanks & regards, Nathalie

2 years, 4 months

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2023-02-08 OpenAMP System Reference notes and action items

by Chan King Choy, Nathalie

Hi all, Notes from today: https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… Action items: * Everyone: For next call: What does everyone want to get done in the next quarter? Can refer to [https://docs.google.com/presentation/d/1QE0zyCxm54KoTDuWKS0Xh-mml3SneQjecDg… Dec webinar future work slides] to seed your thinking. * Bill will start a BOF proposal slide deck w/ title & exec summary and send out for review later this week * Bill will send an email to the board list asking for any objections for the expenditure for Docker, readthedocs, and GitHub upgrade * Nathalie: Invite Stefano to TSC give an update on System DT, Bruce as back-up * Tanmay: Create pull request RFC for Zephyr IPM driver for ZynqMP with overlay for default UART change Thanks & regards, Nathalie

2 years, 5 months

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Calling for agenda: 2023-02-08 OpenAMP System Reference bi-weekly

by Chan King Choy, Nathalie

Hi all, Please let us know what topics you'd like to discuss this week. Here's what I have so far: * Linaro Connect CFP is March 1, so we should sketch BOF / demo proposal outline this call & finalize in our next call Thanks & regards, Nathalie -----Original Appointment----- From: Chan King Choy, Nathalie Sent: Wednesday, January 18, 2023 10:05 AM To: Chan King Choy, Nathalie; OpenAMP System Reference; Ashfield, Bruce Cc: nathalie-ckc(a)kestrel-omnitech.com; Shah, Tanmay; Milea, Danut Gabriel (Danut); Arnaud POULIQUEN; bill.mills(a)linaro.org; Nishanth Menon; hnagalla(a)ti.com; Leino, Tammy (PLM) Subject: OpenAMP System Reference bi-weekly When: Wednesday, February 8, 2023 9:00 AM-10:00 AM (UTC-08:00) Pacific Time (US & Canada). Where: https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f… Meeting notes can be found at https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… [Image removed by sender.]<https://zoom.us/> Hi there, Nathalie Chan King Choy is inviting you to a scheduled Zoom meeting. Join Zoom Meeting<https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f…> Phone one-tap: US: +19292056099,,99873857206#,,,,,,0#,,9703966912#<tel:+19292056099,,99873857206#,,,,,,0#,,9703966912#> or +16699006833,,99873857206#,,,,,,0#,,9703966912#<tel:+16699006833,,99873857206#,,,,,,0#,,9703966912#> Meeting URL: https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f… Meeting ID: 998 7385 7206 Passcode: 9hL+e9TMj8 Join by Telephone For higher quality, dial a number based on your current location. Dial: US: +1 929 205 6099 or +1 669 900 6833 or +1 720 928 9299 or 877 853 5257 (Toll Free) or 888 475 4499 (Toll Free) or 833 548 0276 (Toll Free) or 833 548 0282 (Toll Free) India: +91 806 480 2722 or +91 80 71 279 440 or +91 116 480 2722 or +91 22 48 798 004 or +91 224 879 8012 or +91 225 097 2744 or +91 225 097 2745 or +91 226 480 2722 or +91 22 71 279 525 or +91 406 480 2722 or +91 446 480 2722 or 000 800 001 4002 (Toll Free) or 000 800 050 5050 (Toll Free) Ireland: +353 6 163 9031 or +353 1 536 9320 or +353 1 653 3895 or 1800 949 238 (Toll Free) or 1800 901 561 (Toll Free) or 1800 943 965 (Toll Free) Singapore: +65 3158 7288 or +65 3165 1065 or 800 852 6054 (Toll Free) or 1800 407 5602 (Toll Free) or 800 101 3814 (Toll Free) Meeting ID: 998 7385 7206 Passcode: 9703966912 International numbers<https://xilinx.zoom.us/u/aA6qFxt9M> Join from a Video Conference room system Meeting ID: 998 7385 7206 Passcode: 9703966912 US: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 APAC: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 India: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 Europe: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 SIP: 99873857206(a)zoomcrc.com<mailto:99873857206@zoomcrc.com> Passcode: 9703966912

2 years, 5 months

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RFC: zynqmp mailbox driver in zephyr

by Shah, Tanmay

Hi all, I am planning to make this example work for zynqmp board: https://github.com/OpenAMP/openamp-system-reference/tree/main/examples/zeph… I see that ST has mailbox driver (ipm) for zephyr and is used for communication with host. I found that there is no mailbox driver available for zynqmp platform. Dan’s virtio examples are using Xilinx IPI, however it is in sample directory: https://github.com/OpenAMP/zephyr-openamp-staging/blob/virtio-exp/samples/v… I feel that there is need for zynqmp mailbox driver that is using zynqmp IPI hardware for mailbox communication. Any suggestions on what will be accepted in upstream zephyr repository? Are we planning to merge virtio examples in upstream zephyr? If Dan’s approach is accepted upstream, I can use same file for rpmsg_multi_services. If not, I can take the same file and convert it into mailbox driver, then virtio example can use that driver. I am not very familiar with processes of zephyr community so any suggestion regarding that will be helpful. Thanks, Tanmay

2 years, 5 months

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2023-01-25 OpenAMP System Reference notes

by Chan King Choy, Nathalie

Hi all, Notes from yesterday's call are posted at https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… * Action items: * Hari will check with Praneeth if could get travel budget * Bill will ask Linaro Events if the static link will generate stats or if we only track users landing on the resource page * Bill will ask Linaro Events if they will allow us to post the video on OpenAMP YouTube channel so that we can add a TOC * Nathalie to check the membership contract to see if assignees are required to attend Linaro Connect. * Nathalie to increase text that is hyperlinked to make it easier to see & explain how to download the slides from the resource page Thanks & regards, Nathalie

2 years, 5 months

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Calling for agenda 2023-01-25 OpenAMP System Reference bi-weekly

by Chan King Choy, Nathalie

Hi all, Here is what I collected so far: * All: Who is planning to go to Linaro Connect Wed Apr 26 - Fri Apr 28 in London? (reg discount for members & free reg for presenter if CFP accepted) * All: Would it make sense to try to organize an OpenAMP F2F gathering on afternoon/evening of Tue Apr 25? * All: Continue having the internal Discord for System Reference, or switch over to using the public OpenAMP channel on the Linaro Discord? * Bill: HPP plans for 2023 Let us know if you have any additional agenda topics. Thanks & regards, Nathalie -----Original Appointment----- From: Chan King Choy, Nathalie Sent: Wednesday, January 18, 2023 10:05 AM To: Chan King Choy, Nathalie; OpenAMP System Reference; Ashfield, Bruce; Ashfield, Bruce; Nishanth Menon; hnagalla(a)ti.com Cc: nathalie-ckc(a)kestrel-omnitech.com; Shah, Tanmay; Milea, Danut Gabriel (Danut); Arnaud POULIQUEN; bill.mills(a)linaro.org; Nishanth Menon; hnagalla(a)ti.com; nathalie-ckc(a)kestrel-omnitech.com; Milea, Danut Gabriel (Danut); Arnaud POULIQUEN; bill.mills(a)linaro.org Subject: OpenAMP System Reference bi-weekly When: Wednesday, January 25, 2023 9:00 AM-10:00 AM (UTC-08:00) Pacific Time (US & Canada). Where: https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f… Meeting notes can be found at https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… [Image removed by sender.]<https://zoom.us/> Hi there, Nathalie Chan King Choy is inviting you to a scheduled Zoom meeting. Join Zoom Meeting<https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f…> Phone one-tap: US: +19292056099,,99873857206#,,,,,,0#,,9703966912#<tel:+19292056099,,99873857206#,,,,,,0#,,9703966912#> or +16699006833,,99873857206#,,,,,,0#,,9703966912#<tel:+16699006833,,99873857206#,,,,,,0#,,9703966912#> Meeting URL: https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f… Meeting ID: 998 7385 7206 Passcode: 9hL+e9TMj8 Join by Telephone For higher quality, dial a number based on your current location. Dial: US: +1 929 205 6099 or +1 669 900 6833 or +1 720 928 9299 or 877 853 5257 (Toll Free) or 888 475 4499 (Toll Free) or 833 548 0276 (Toll Free) or 833 548 0282 (Toll Free) India: +91 806 480 2722 or +91 80 71 279 440 or +91 116 480 2722 or +91 22 48 798 004 or +91 224 879 8012 or +91 225 097 2744 or +91 225 097 2745 or +91 226 480 2722 or +91 22 71 279 525 or +91 406 480 2722 or +91 446 480 2722 or 000 800 001 4002 (Toll Free) or 000 800 050 5050 (Toll Free) Ireland: +353 6 163 9031 or +353 1 536 9320 or +353 1 653 3895 or 1800 949 238 (Toll Free) or 1800 901 561 (Toll Free) or 1800 943 965 (Toll Free) Singapore: +65 3158 7288 or +65 3165 1065 or 800 852 6054 (Toll Free) or 1800 407 5602 (Toll Free) or 800 101 3814 (Toll Free) Meeting ID: 998 7385 7206 Passcode: 9703966912 International numbers<https://xilinx.zoom.us/u/aA6qFxt9M> Join from a Video Conference room system Meeting ID: 998 7385 7206 Passcode: 9703966912 US: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 APAC: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 India: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 Europe: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 SIP: 99873857206(a)zoomcrc.com<mailto:99873857206@zoomcrc.com> Passcode: 9703966912

2 years, 5 months

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2023-01-18 call notes, H1CY2023 meeting series, website blog post

by Chan King Choy, Nathalie

Hi all, The notes from today's call are posted at https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… I have sent the calendar invitation for the meeting series & set it to go until end of June. Let me know directly if you didn't receive it. Hi Bill & Arnaud, I submitted a blog post to the OpenAMP Project website in GitHub & added you as reviewers to https://github.com/OpenAMP/website/pull/94 so we can get a review before merging. More details in the PR notes. Thanks & regards, Nathalie

2 years, 6 months

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OpenAMP System Reference bi-weekly

by Chan King Choy, Nathalie

Meeting notes can be found at https://github.com/OpenAMP/openamp-system-reference/wiki/OpenAMP-System-Ref… [https://st2.zoom.us/static/6.3.10815/image/new/ZoomLogo_110_25.png]<https://zoom.us/> Hi there, Nathalie Chan King Choy is inviting you to a scheduled Zoom meeting. Join Zoom Meeting<https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f…> Phone one-tap: US: +19292056099,,99873857206#,,,,,,0#,,9703966912#<tel:+19292056099,,99873857206#,,,,,,0#,,9703966912#> or +16699006833,,99873857206#,,,,,,0#,,9703966912#<tel:+16699006833,,99873857206#,,,,,,0#,,9703966912#> Meeting URL: https://xilinx.zoom.us/j/99873857206?pwd=RHBvSDgxWUgrMTc2cGpleTZlTTdsdz09&f… Meeting ID: 998 7385 7206 Passcode: 9hL+e9TMj8 Join by Telephone For higher quality, dial a number based on your current location. Dial: US: +1 929 205 6099 or +1 669 900 6833 or +1 720 928 9299 or 877 853 5257 (Toll Free) or 888 475 4499 (Toll Free) or 833 548 0276 (Toll Free) or 833 548 0282 (Toll Free) India: +91 806 480 2722 or +91 80 71 279 440 or +91 116 480 2722 or +91 22 48 798 004 or +91 224 879 8012 or +91 225 097 2744 or +91 225 097 2745 or +91 226 480 2722 or +91 22 71 279 525 or +91 406 480 2722 or +91 446 480 2722 or 000 800 001 4002 (Toll Free) or 000 800 050 5050 (Toll Free) Ireland: +353 6 163 9031 or +353 1 536 9320 or +353 1 653 3895 or 1800 949 238 (Toll Free) or 1800 901 561 (Toll Free) or 1800 943 965 (Toll Free) Singapore: +65 3158 7288 or +65 3165 1065 or 800 852 6054 (Toll Free) or 1800 407 5602 (Toll Free) or 800 101 3814 (Toll Free) Meeting ID: 998 7385 7206 Passcode: 9703966912 International numbers<https://xilinx.zoom.us/u/aA6qFxt9M> Join from a Video Conference room system Meeting ID: 998 7385 7206 Passcode: 9703966912 US: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 APAC: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 India: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 Europe: 99873857206(a)global.zoomcrc.com<mailto:99873857206@global.zoomcrc.com> Passcode: 9703966912 SIP: 99873857206(a)zoomcrc.com<mailto:99873857206@zoomcrc.com> Passcode: 9703966912

2 years, 6 months

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OpenAMP System Reference WG

by Chan King Choy, Nathalie

[Shortening to 30 min, as Dan's partly-conflicting series has now been established and begins this week, so let's just start at half-past.] First meeting of 2023. Agenda: * Bill: What are the 2023 HPP objectives? * All: Discuss brainstorm list<https://docs.google.com/document/d/19Bpss2PHw8xavpviWZ1vu45hxrIbBG8mSSgKhrE…> on what makes sense to work on next * Nathalie: Scheduling 2023 meeting series [https://st2.zoom.us/static/6.3.10219/image/new/ZoomLogo_110_25.png]<https://zoom.us/> Hi there, Nathalie Chan King Choy is inviting you to a scheduled Zoom meeting. Join Zoom Meeting<https://xilinx.zoom.us/j/91913123613?pwd=TVl6UldtR1k1R3RVY3ZueEdOQ1A2UT09&f…> Phone one-tap: US: +16699006833,,91913123613#,,,,,,0#,,3787125748#<tel:+16699006833,,91913123613#,,,,,,0#,,3787125748#> or +17209289299,,91913123613#,,,,,,0#,,3787125748#<tel:+17209289299,,91913123613#,,,,,,0#,,3787125748#> Meeting URL: https://xilinx.zoom.us/j/91913123613?pwd=TVl6UldtR1k1R3RVY3ZueEdOQ1A2UT09&f… Meeting ID: 919 1312 3613 Passcode: KxRC6Aut@y Join by Telephone For higher quality, dial a number based on your current location. Dial: US: +1 669 900 6833 or +1 720 928 9299 or +1 929 205 6099 or 888 475 4499 (Toll Free) or 833 548 0276 (Toll Free) or 833 548 0282 (Toll Free) or 877 853 5257 (Toll Free) India: +91 446 480 2722 or +91 806 480 2722 or +91 80 71 279 440 or +91 116 480 2722 or +91 22 48 798 004 or +91 224 879 8012 or +91 225 097 2744 or +91 225 097 2745 or +91 226 480 2722 or +91 22 71 279 525 or +91 406 480 2722 or 000 800 050 5050 (Toll Free) or 000 800 001 4002 (Toll Free) Ireland: +353 1 536 9320 or +353 1 653 3895 or +353 6 163 9031 or 1800 901 561 (Toll Free) or 1800 943 965 (Toll Free) or 1800 949 238 (Toll Free) Singapore: +65 3165 1065 or +65 3158 7288 or 1800 407 5602 (Toll Free) or 800 101 3814 (Toll Free) or 800 852 6054 (Toll Free) Meeting ID: 919 1312 3613 Passcode: 3787125748 International numbers<https://xilinx.zoom.us/u/aeBuTEAkLY> Join from a Video Conference room system Meeting ID: 919 1312 3613 Passcode: 3787125748 US: 91913123613(a)global.zoomcrc.com<mailto:91913123613@global.zoomcrc.com> Passcode: 3787125748 APAC: 91913123613(a)global.zoomcrc.com<mailto:91913123613@global.zoomcrc.com> Passcode: 3787125748 India: 91913123613(a)global.zoomcrc.com<mailto:91913123613@global.zoomcrc.com> Passcode: 3787125748 Europe: 91913123613(a)global.zoomcrc.com<mailto:91913123613@global.zoomcrc.com> Passcode: 3787125748 SIP: 91913123613(a)zoomcrc.com<mailto:91913123613@zoomcrc.com> Passcode: 3787125748

2 years, 6 months

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[PATCH] remoteproc: xilinx: add mailbox channels for rpmsg

by Tanmay Shah

This patch makes each r5 core mailbox client and uses tx and rx channels to send and receive data to/from remote processor respectively. This is needed for rpmsg communication to remote processor. Signed-off-by: Tanmay Shah <tanmay.shah(a)amd.com> --- drivers/remoteproc/xlnx_r5_remoteproc.c | 329 +++++++++++++++++++----- 1 file changed, 271 insertions(+), 58 deletions(-) diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c index 2db57d394155..1e797c5ffc06 100644 --- a/drivers/remoteproc/xlnx_r5_remoteproc.c +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c @@ -8,16 +8,23 @@ #include <linux/dma-mapping.h> #include <linux/firmware/xlnx-zynqmp.h> #include <linux/kernel.h> +#include <linux/mailbox_client.h> +#include <linux/mailbox/zynqmp-ipi-message.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/remoteproc.h> -#include <linux/slab.h> #include "remoteproc_internal.h" +/* IPI buffer MAX length */ +#define IPI_BUF_LEN_MAX 32U + +/* RX mailbox client buffer max length */ +#define MBOX_CLIENT_BUF_MAX (IPI_BUF_LEN_MAX + \ + sizeof(struct zynqmp_ipi_message)) /* * settings for RPU cluster mode which * reflects possible values of xlnx,cluster-mode dt-property @@ -65,6 +72,12 @@ static const struct mem_bank_data zynqmp_tcm_banks[] = { * @rmem: reserved memory region nodes from device tree * @rproc: rproc handle * @pm_domain_id: RPU CPU power domain id + * @rx_mc_buf: to copy data from mailbox rx channel + * @tx_mc_buf: to copy data to mailbox tx channel + * @mbox_work: schedule work after receiving data from mailbox + * @mbox_cl: mailbox client + * @tx_chan: mailbox tx channel + * @rx_chan: mailbox rx channel */ struct zynqmp_r5_core { struct device *dev; @@ -75,6 +88,14 @@ struct zynqmp_r5_core { struct reserved_mem **rmem; struct rproc *rproc; u32 pm_domain_id; + + /* mailbox related data structures */ + unsigned char rx_mc_buf[MBOX_CLIENT_BUF_MAX]; + unsigned char tx_mc_buf[MBOX_CLIENT_BUF_MAX]; + struct work_struct mbox_work; + struct mbox_client mbox_cl; + struct mbox_chan *tx_chan; + struct mbox_chan *rx_chan; }; /** @@ -92,6 +113,181 @@ struct zynqmp_r5_cluster { struct zynqmp_r5_core **r5_cores; }; +/** + * event_notified_idr_cb() - callback for vq_interrupt per notifyid + * @id: rproc->notify id + * @ptr: pointer to idr private data + * @data: data passed to idr_for_each callback + * + * Pass notification to remoteproc virtio + * + * Return: 0. having return is to satisfy the idr_for_each() function + * pointer input argument requirement. + **/ +static int event_notified_idr_cb(int id, void *ptr, void *data) +{ + struct rproc *rproc = data; + + if (rproc_vq_interrupt(rproc, id) == IRQ_NONE) + dev_dbg(&rproc->dev, "data not found for vqid=%d\n", id); + + return 0; +} + +/** + * handle_event_notified() - remoteproc notification work function + * @work: pointer to the work structure + * + * It checks each registered remoteproc notify IDs. + */ +static void handle_event_notified(struct work_struct *work) +{ + struct zynqmp_r5_core *r5_core; + struct rproc *rproc; + + r5_core = container_of(work, struct zynqmp_r5_core, mbox_work); + rproc = r5_core->rproc; + + /* + * We only use IPI for interrupt. The RPU firmware side may or may + * not write the notifyid when it trigger IPI. + * And thus, we scan through all the registered notifyids and + * find which one is valid to get the message. + * Even if message from firmware is NULL, we attempt to get vqid + */ + idr_for_each(&rproc->notifyids, event_notified_idr_cb, rproc); +} + +/** + * zynqmp_r5_mb_rx_cb() - receive channel mailbox callback + * @cl: mailbox client + * @msg: message pointer + * + * Receive data from ipi buffer, ack interrupt and then + * it will schedule the R5 notification work. + */ +static void zynqmp_r5_mb_rx_cb(struct mbox_client *cl, void *msg) +{ + struct zynqmp_ipi_message *ipi_msg, *buf_msg; + struct zynqmp_r5_core *r5_core; + size_t len; + + r5_core = container_of(cl, struct zynqmp_r5_core, mbox_cl); + + /* copy data from ipi buffer to r5_core */ + ipi_msg = (struct zynqmp_ipi_message *)msg; + buf_msg = (struct zynqmp_ipi_message *)r5_core->rx_mc_buf; + len = ipi_msg->len; + if (len > IPI_BUF_LEN_MAX) { + dev_warn(r5_core->dev, "msg size exceeded than %d\n", + IPI_BUF_LEN_MAX); + len = IPI_BUF_LEN_MAX; + } + buf_msg->len = len; + memcpy(buf_msg->data, ipi_msg->data, len); + + /* received and processed interrupt ack */ + if (mbox_send_message(r5_core->rx_chan, NULL) < 0) + dev_err(r5_core->dev, "ack failed to mbox rx_chan\n"); + + schedule_work(&r5_core->mbox_work); +} + +/** + * zynqmp_r5_setup_mbox() - Setup mailboxes related properties + * this is used for each individual R5 core + * + * @r5_core: pointer to the ZynqMP r5 core data + * + * Function to setup mailboxes related properties + * + */ +static void zynqmp_r5_setup_mbox(struct zynqmp_r5_core *r5_core) +{ + struct zynqmp_r5_cluster *cluster; + struct mbox_client *mbox_cl; + + cluster = dev_get_drvdata(r5_core->dev->parent); + + /** + * ToDo: Use only one IPI channel for APU to communicate with both RPUs + * in split mode. As of now, two IPI channels are expeceted for APU + * to communicate with RPU. for example, APU(IPI0)<-> RPU0(IPI1) and + * APU(IPI7)<->RPU1(IPI2). However, this is not the optimized use + * of the hardware. As per hardware reference manual, each IPI channel + * can receive interrupt from another IPI channel. So APU must be able + * to communicate with both RPUs simultaneously using same IPI channel. + * For example, this is valid case: APU(IPI0)<->RPU0(IPI1) and + * APU(IPI0)<->RPU1(IPI2). However, with current available examples + * and RPU firmware, this configuration in device-tree is causing system-crash. + * And so, using extra IPI channel is required in device-tree. In split + * mode explicitly inform user about this limitation and requirement. + */ + if (cluster->mode == SPLIT_MODE) + dev_warn(r5_core->dev, "split mode: APU should use two IPI channels\n"); + + mbox_cl = &r5_core->mbox_cl; + mbox_cl->rx_callback = zynqmp_r5_mb_rx_cb; + mbox_cl->tx_block = false; + mbox_cl->knows_txdone = false; + mbox_cl->tx_done = NULL; + mbox_cl->dev = r5_core->dev; + + /* Request TX and RX channels */ + r5_core->tx_chan = mbox_request_channel_byname(mbox_cl, "tx"); + if (IS_ERR(r5_core->tx_chan)) { + r5_core->tx_chan = NULL; + return; + } + + r5_core->rx_chan = mbox_request_channel_byname(mbox_cl, "rx"); + if (IS_ERR(r5_core->rx_chan)) { + mbox_free_channel(r5_core->tx_chan); + r5_core->rx_chan = NULL; + r5_core->tx_chan = NULL; + return; + } + + INIT_WORK(&r5_core->mbox_work, handle_event_notified); +} + +static void zynqmp_r5_free_mbox(struct zynqmp_r5_core *r5_core) +{ + if (r5_core->tx_chan) { + mbox_free_channel(r5_core->tx_chan); + r5_core->tx_chan = NULL; + } + + if (r5_core->rx_chan) { + mbox_free_channel(r5_core->rx_chan); + r5_core->rx_chan = NULL; + } +} + +/* + * zynqmp_r5_core_kick() - kick a firmware if mbox is provided + * @rproc: r5 core's corresponding rproc structure + * @vqid: virtqueue ID + */ +static void zynqmp_r5_rproc_kick(struct rproc *rproc, int vqid) +{ + struct zynqmp_r5_core *r5_core = rproc->priv; + struct device *dev = r5_core->dev; + struct zynqmp_ipi_message *mb_msg; + int ret; + + /* don't handle kick if mbox setup failed for this core */ + if (!r5_core->tx_chan && !r5_core->rx_chan) + return; + + mb_msg = (struct zynqmp_ipi_message *)r5_core->tx_mc_buf; + memcpy(mb_msg->data, &vqid, sizeof(vqid)); + mb_msg->len = sizeof(vqid); + ret = mbox_send_message(r5_core->tx_chan, mb_msg); + if (ret < 0) + dev_warn(dev, "failed to send message\n"); +} + /* * zynqmp_r5_set_mode() * @@ -227,6 +423,63 @@ static int zynqmp_r5_mem_region_unmap(struct rproc *rproc, return 0; } +/** + * zynqmp_r5_get_mem_region_node() + * parse memory-region property and get reserved mem regions + * + * @r5_core: pointer to zynqmp_r5_core type object + * + * Return: 0 for success and error code for failure. + */ +static int zynqmp_r5_get_mem_region_node(struct zynqmp_r5_core *r5_core) +{ + struct device_node *np, *rmem_np; + struct reserved_mem **rmem; + int res_mem_count, i; + struct device *dev; + + dev = r5_core->dev; + np = r5_core->np; + + res_mem_count = of_property_count_elems_of_size(np, "memory-region", + sizeof(phandle)); + + if (res_mem_count <= 0) { + dev_warn(dev, "failed to get memory-region property %d\n", + res_mem_count); + return 0; + } + + if (!r5_core->tx_chan && !r5_core->rx_chan) + res_mem_count = 1; + + rmem = devm_kcalloc(dev, res_mem_count, + sizeof(struct reserved_mem *), GFP_KERNEL); + if (!rmem) + return -ENOMEM; + + for (i = 0; i < res_mem_count; i++) { + rmem_np = of_parse_phandle(np, "memory-region", i); + if (!rmem_np) + goto release_rmem; + + rmem[i] = of_reserved_mem_lookup(rmem_np); + if (!rmem[i]) { + of_node_put(rmem_np); + goto release_rmem; + } + + of_node_put(rmem_np); + } + + r5_core->rmem_count = res_mem_count; + r5_core->rmem = rmem; + return 0; + +release_rmem: + return -EINVAL; +} + /* * add_mem_regions_carveout() * @rproc: single R5 core's corresponding rproc instance @@ -572,6 +825,20 @@ static int zynqmp_r5_rproc_prepare(struct rproc *rproc) return ret; } + /* + * If mailbox nodes are disabled using "status" property then setting up + * mailbox channels will be failed and in that case, we don't need vrings + * and vdevbuffer for this core. So, setup mailbox before parsing + * memory-region property. If "tx" and "rx" mailboxes are not setup, then + * only parse and add first memory-region carveout. As per bindings, it + * must be firmware load region + */ + zynqmp_r5_setup_mbox(rproc->priv); + + ret = zynqmp_r5_get_mem_region_node(rproc->priv); + if (ret) + dev_warn(&rproc->dev, "memory-region prop failed %d\n", ret); + ret = add_mem_regions_carveout(rproc); if (ret) { dev_err(&rproc->dev, "failed to get reserve mem regions %d\n", ret); @@ -597,6 +864,8 @@ static int zynqmp_r5_rproc_unprepare(struct rproc *rproc) r5_core = (struct zynqmp_r5_core *)rproc->priv; + zynqmp_r5_free_mbox(r5_core); + for (i = 0; i < r5_core->tcm_bank_count; i++) { pm_domain_id = r5_core->tcm_banks[i]->pm_domain_id; if (zynqmp_pm_release_node(pm_domain_id)) @@ -617,6 +886,7 @@ static const struct rproc_ops zynqmp_r5_rproc_ops = { .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table, .sanity_check = rproc_elf_sanity_check, .get_boot_addr = rproc_elf_get_boot_addr, + .kick = zynqmp_r5_rproc_kick, }; /** @@ -726,59 +996,6 @@ static int zynqmp_r5_get_tcm_node(struct zynqmp_r5_cluster *cluster) return 0; } -/** - * zynqmp_r5_get_mem_region_node() - * parse memory-region property and get reserved mem regions - * - * @r5_core: pointer to zynqmp_r5_core type object - * - * Return: 0 for success and error code for failure. - */ -static int zynqmp_r5_get_mem_region_node(struct zynqmp_r5_core *r5_core) -{ - struct device_node *np, *rmem_np; - struct reserved_mem **rmem; - int res_mem_count, i; - struct device *dev; - - dev = r5_core->dev; - np = r5_core->np; - - res_mem_count = of_property_count_elems_of_size(np, "memory-region", - sizeof(phandle)); - if (res_mem_count <= 0) { - dev_warn(dev, "failed to get memory-region property %d\n", - res_mem_count); - return 0; - } - - rmem = devm_kcalloc(dev, res_mem_count, - sizeof(struct reserved_mem *), GFP_KERNEL); - if (!rmem) - return -ENOMEM; - - for (i = 0; i < res_mem_count; i++) { - rmem_np = of_parse_phandle(np, "memory-region", i); - if (!rmem_np) - goto release_rmem; - - rmem[i] = of_reserved_mem_lookup(rmem_np); - if (!rmem[i]) { - of_node_put(rmem_np); - goto release_rmem; - } - - of_node_put(rmem_np); - } - - r5_core->rmem_count = res_mem_count; - r5_core->rmem = rmem; - return 0; - -release_rmem: - return -EINVAL; -} - /* * zynqmp_r5_core_init() * Create and initialize zynqmp_r5_core type object @@ -806,10 +1023,6 @@ static int zynqmp_r5_core_init(struct zynqmp_r5_cluster *cluster, for (i = 0; i < cluster->core_count; i++) { r5_core = cluster->r5_cores[i]; - ret = zynqmp_r5_get_mem_region_node(r5_core); - if (ret) - dev_warn(dev, "memory-region prop failed %d\n", ret); - /* Initialize r5 cores with power-domains parsed from dts */ ret = of_property_read_u32_index(r5_core->np, "power-domains", 1, &r5_core->pm_domain_id); base-commit: 90d6db82626be5e5fe085f4f58c49a080c420fa6 -- 2.25.1

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Openamp-system-reference