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From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: Peter Maydell <peter.maydell@linaro.org>,
	qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH 06/24] hw/misc/mps2-fpgaio: Support SWITCH register
Date: Fri, 12 Feb 2021 19:23:17 +0100
Message-ID: <4f8bfa76-159a-bbee-6774-b5e55c8d9b67@amsat.org> (raw)
In-Reply-To: <20210205170019.25319-7-peter.maydell@linaro.org>

On 2/5/21 6:00 PM, Peter Maydell wrote:
> MPS3 boards have an extra SWITCH register in the FPGAIO block which
> reports the value of some switches.  Implement this, governed by a
> property the board code can use to specify whether whether it exists.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  include/hw/misc/mps2-fpgaio.h |  1 +
>  hw/misc/mps2-fpgaio.c         | 10 ++++++++++
>  2 files changed, 11 insertions(+)
> 
> diff --git a/include/hw/misc/mps2-fpgaio.h b/include/hw/misc/mps2-fpgaio.h
> index bfe73134e78..83c6e18a4ee 100644
> --- a/include/hw/misc/mps2-fpgaio.h
> +++ b/include/hw/misc/mps2-fpgaio.h
> @@ -38,6 +38,7 @@ struct MPS2FPGAIO {
>      MemoryRegion iomem;
>      LEDState *led[MPS2FPGAIO_MAX_LEDS];
>      uint32_t num_leds;
> +    bool have_switches;
>  
>      uint32_t led0;
>      uint32_t prescale;
> diff --git a/hw/misc/mps2-fpgaio.c b/hw/misc/mps2-fpgaio.c
> index b28a1be22cc..b54657a4f07 100644
> --- a/hw/misc/mps2-fpgaio.c
> +++ b/hw/misc/mps2-fpgaio.c
> @@ -35,6 +35,7 @@ REG32(CLK100HZ, 0x14)
>  REG32(COUNTER, 0x18)
>  REG32(PRESCALE, 0x1c)
>  REG32(PSCNTR, 0x20)
> +REG32(SWITCH, 0x28)
>  REG32(MISC, 0x4c)
>  
>  static uint32_t counter_from_tickoff(int64_t now, int64_t tick_offset, int frq)
> @@ -156,7 +157,15 @@ static uint64_t mps2_fpgaio_read(void *opaque, hwaddr offset, unsigned size)
>          resync_counter(s);
>          r = s->pscntr;
>          break;
> +    case A_SWITCH:
> +        if (!s->have_switches) {
> +            goto bad_offset;
> +        }
> +        /* User-togglable board switches. We don't model that, so report 0. */

We should and probably will at some point... This is a feature
I'm thinking about and which could be implemented the same way
as the TempSensor series. My latest problem is to have QOM names
(full path) consistent. That way we can toggle a switch at
runtime via (at least) a QMP command.

Anyway to your patch (including change squashed):
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>


  parent reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-05 16:59 [PATCH 00/24] hw/arm: New board model mps3-an524 Peter Maydell
2021-02-05 16:59 ` [PATCH 01/24] hw/arm/mps2-tz: Make SYSCLK frequency board-specific Peter Maydell
2021-02-05 18:13   ` Philippe Mathieu-Daudé
2021-02-05 16:59 ` [PATCH 02/24] hw/misc/mps2-scc: Support configurable number of OSCCLK values Peter Maydell
2021-02-12 18:11   ` Philippe Mathieu-Daudé
2021-02-05 16:59 ` [PATCH 03/24] hw/arm/mps2-tz: Correct the OSCCLK settings for mps2-an505 and mps2-an511 Peter Maydell
2021-02-12 18:12   ` Philippe Mathieu-Daudé
2021-02-05 16:59 ` [PATCH 04/24] hw/arm/mps2-tz: Make the OSCCLK settings be configurable per-board Peter Maydell
2021-02-12 18:12   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 05/24] hw/misc/mps2-fpgaio: Make number of LEDs configurable by board Peter Maydell
2021-02-12 18:19   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 06/24] hw/misc/mps2-fpgaio: Support SWITCH register Peter Maydell
2021-02-12 13:45   ` Peter Maydell
2021-02-12 13:51     ` Philippe Mathieu-Daudé
2021-02-12 14:03       ` Peter Maydell
2021-02-12 18:23   ` Philippe Mathieu-Daudé [this message]
2021-02-05 17:00 ` [PATCH 07/24] hw/arm/mps2-tz: Make FPGAIO switch and LED config per-board Peter Maydell
2021-02-12 13:51   ` Peter Maydell
2021-02-12 18:24     ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 08/24] hw/arm/mps2-tz: Condition IRQ splitting on number of CPUs, not board type Peter Maydell
2021-02-12 18:25   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 09/24] hw/arm/mps2-tz: Make number of IRQs board-specific Peter Maydell
2021-02-12 18:26   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 10/24] hw/misc/mps2-scc: Implement CFG_REG5 and CFG_REG6 for MPS3 AN524 Peter Maydell
2021-02-05 17:00 ` [PATCH 11/24] hw/arm/mps2-tz: Correct wrong interrupt numbers for DMA and SPI Peter Maydell
2021-02-05 17:00 ` [PATCH 12/24] hw/arm/mps2-tz: Allow PPCPortInfo structures to specify device interrupts Peter Maydell
2021-02-05 17:00 ` [PATCH 13/24] hw/arm/mps2-tz: Move device IRQ info to data structures Peter Maydell
2021-02-05 17:00 ` [PATCH 14/24] hw/arm/mps2-tz: Size the uart-irq-orgate based on the number of UARTs Peter Maydell
2021-02-05 17:00 ` [PATCH 15/24] hw/arm/mps2-tz: Allow boards to have different PPCInfo data Peter Maydell
2021-02-05 17:00 ` [PATCH 16/24] hw/arm/mps2-tz: Make RAM arrangement board-specific Peter Maydell
2021-02-05 17:00 ` [PATCH 17/24] hw/arm/mps2-tz: Set MachineClass default_ram info from RAMInfo data Peter Maydell
2021-02-05 17:00 ` [PATCH 18/24] hw/arm/mps2-tz: Support ROMs as well as RAMs Peter Maydell
2021-02-05 17:00 ` [PATCH 19/24] hw/arm/mps2-tz: Get armv7m_load_kernel() size argument from RAMInfo Peter Maydell
2021-02-12 18:30   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 20/24] hw/arm/mps2-tz: Add new mps3-an524 board Peter Maydell
2021-02-12 11:19   ` Peter Maydell
2021-02-12 14:51   ` Peter Maydell
2021-02-05 17:00 ` [PATCH 21/24] hw/arm/mps2-tz: Stub out USB controller for mps3-an524 Peter Maydell
2021-02-12 18:34   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 22/24] hw/arm/mps2-tz: Provide PL031 RTC on mps3-an524 Peter Maydell
2021-02-12 18:35   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 23/24] docs/system/arm/mps2.rst: Document the new mps3-an524 board Peter Maydell
2021-02-12 18:36   ` Philippe Mathieu-Daudé
2021-02-05 17:00 ` [PATCH 24/24] hw/arm/mps2: Update old infocenter.arm.com URLs Peter Maydell
2021-02-12 18:37   ` Philippe Mathieu-Daudé
2021-02-05 18:05 ` [PATCH 00/24] hw/arm: New board model mps3-an524 Philippe Mathieu-Daudé
2021-02-05 19:20   ` Peter Maydell
2021-02-05 19:31     ` Philippe Mathieu-Daudé
2021-02-05 19:34       ` Peter Maydell
2021-02-12 18:38         ` Philippe Mathieu-Daudé
2021-02-05 18:27 ` no-reply

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