From: Haojian Zhuang <haojian.zhuang@linaro.org>
To: Jun Nie <jun.nie@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>,
Linaro UEFI Mailman List <linaro-uefi@lists.linaro.org>,
Shawn Guo <shawn.guo@linaro.org>,
Jason LIU <jason.liu@linaro.org>
Subject: Re: [PATCH v3 2/2] EmbeddedPkg/DwEmmc: Adjust FIFO threshold
Date: Mon, 17 Jul 2017 09:41:58 +0800 [thread overview]
Message-ID: <CAD6h2NSymmXRqFGvygXx_4J7QcT8-RE6hcpXC5WZ4xwF-hY6Wg@mail.gmail.com> (raw)
In-Reply-To: <1499419297-18886-1-git-send-email-jun.nie@linaro.org>
On 7 July 2017 at 17:21, Jun Nie <jun.nie@linaro.org> wrote:
> Adjust FIFO threshold according to FIFO depth. Skip
> the adjustment if we do not have FIFO depth info.
>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Jun Nie <jun.nie@linaro.org>
> ---
> EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmc.h | 6 +++++
> EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c | 42 +++++++++++++++++++++++++++++
> EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.inf | 1 +
> EmbeddedPkg/EmbeddedPkg.dec | 1 +
> 4 files changed, 50 insertions(+)
>
> diff --git a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmc.h b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmc.h
> index 055f1e0..90c7676 100644
> --- a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmc.h
> +++ b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmc.h
> @@ -38,7 +38,10 @@
> #define DWEMMC_RINTSTS ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x044)
> #define DWEMMC_STATUS ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x048)
> #define DWEMMC_FIFOTH ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x04c)
> +#define DWEMMC_TCBCNT ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x05c)
> +#define DWEMMC_TBBCNT ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x060)
> #define DWEMMC_DEBNCE ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x064)
> +#define DWEMMC_HCON ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x070)
> #define DWEMMC_UHSREG ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x074)
> #define DWEMMC_BMOD ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x080)
> #define DWEMMC_DBADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x088)
> @@ -47,6 +50,7 @@
> #define DWEMMC_DSCADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x094)
> #define DWEMMC_BUFADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x098)
> #define DWEMMC_CARDTHRCTL ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0X100)
> +#define DWEMMC_DATA ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0X200)
>
> #define CMD_UPDATE_CLK 0x80202000
> #define CMD_START_BIT (1 << 31)
> @@ -124,4 +128,6 @@
> #define DWEMMC_CARD_RD_THR(x) ((x & 0xfff) << 16)
> #define DWEMMC_CARD_RD_THR_EN (1 << 0)
>
> +#define DWEMMC_GET_HDATA_WIDTH(x) (((x) >> 7) & 0x7)
> +
> #endif // __DWEMMC_H__
> diff --git a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> index bb26b69..bd20f4b 100644
> --- a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> +++ b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.c
> @@ -415,6 +415,47 @@ DwEmmcReceiveResponse (
> return EFI_SUCCESS;
> }
>
> +VOID
> +DwEmmcAdjustFifothresholdreshold (
> + VOID
> + )
> +{
> + /* DMA multiple transaction size map to reg value as array index */
> + CONST UINT32 BurstSize[] = {1, 4, 8, 16, 32, 64, 128, 256};
> + UINT32 BlkDepthInFifo, Fifothreshold, FifoWidth, FifoDepth;
> + UINT32 BlkSize = DWEMMC_BLOCK_SIZE, Idx = 0, RxWatermark = 1, TxWatermark, TxWatermarkInvers;
> +
> + /* Skip FIFO adjustment if we do not have platform FIFO depth info */
> + FifoDepth = PcdGet32 (PcdDwEmmcDxeFifoDepth);
> + if (!FifoDepth) {
> + return;
> + }
> +
> + TxWatermark = FifoDepth / 2;
> + TxWatermarkInvers = FifoDepth - TxWatermark;
> +
> + FifoWidth = DWEMMC_GET_HDATA_WIDTH (MmioRead32 (DWEMMC_HCON));
> + if (!FifoWidth) {
> + FifoWidth = 2;
> + } else if (FifoWidth == 2) {
> + FifoWidth = 8;
> + } else {
> + FifoWidth = 4;
> + }
> +
> + BlkDepthInFifo = BlkSize / FifoWidth;
> +
> + Idx = ARRAY_SIZE (BurstSize) - 1;
> + while (Idx && ((BlkDepthInFifo % BurstSize[Idx]) || (TxWatermarkInvers % BurstSize[Idx]))) {
> + Idx--;
> + }
> +
> + RxWatermark = BurstSize[Idx] - 1;
> + Fifothreshold = DWEMMC_DMA_BURST_SIZE (Idx) | DWEMMC_FIFO_TWMARK (TxWatermark)
> + | DWEMMC_FIFO_RWMARK (RxWatermark);
> + MmioWrite32 (DWEMMC_FIFOTH, Fifothreshold);
> +}
> +
> EFI_STATUS
> PrepareDmaData (
> IN DWEMMC_IDMAC_DESCRIPTOR* IdmacDesc,
> @@ -633,6 +674,7 @@ DwEmmcDxeInitialize (
>
> Handle = NULL;
>
> + DwEmmcAdjustFifothresholdreshold ();
> gpIdmacDesc = (DWEMMC_IDMAC_DESCRIPTOR *)AllocatePages (DWEMMC_MAX_DESC_PAGES);
> if (gpIdmacDesc == NULL) {
> return EFI_BUFFER_TOO_SMALL;
> diff --git a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.inf b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.inf
> index 99b4f99..bc4413e 100644
> --- a/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.inf
> +++ b/EmbeddedPkg/Drivers/DwEmmcDxe/DwEmmcDxe.inf
> @@ -49,6 +49,7 @@
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeBaseAddress
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeClockFrequencyInHz
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeMaxClockFreqInHz
> + gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeFifoDepth
>
> [Depex]
> TRUE
> diff --git a/EmbeddedPkg/EmbeddedPkg.dec b/EmbeddedPkg/EmbeddedPkg.dec
> index 3cb30a4..4cd528a 100644
> --- a/EmbeddedPkg/EmbeddedPkg.dec
> +++ b/EmbeddedPkg/EmbeddedPkg.dec
> @@ -168,6 +168,7 @@
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeBaseAddress|0x0|UINT32|0x00000035
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeClockFrequencyInHz|0x0|UINT32|0x00000036
> gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeMaxClockFreqInHz|0x0|UINT32|0x00000037
> + gEmbeddedTokenSpaceGuid.PcdDwEmmcDxeFifoDepth|0x0|UINT32|0x00000038
>
> #
> # Android FastBoot
> --
> 1.9.1
>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
next prev parent reply other threads:[~2017-07-17 1:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-07 9:21 [PATCH v3 2/2] EmbeddedPkg/DwEmmc: Adjust FIFO threshold Jun Nie
2017-07-17 1:41 ` Haojian Zhuang [this message]
2017-07-17 16:55 ` Leif Lindholm
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