Re: [PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
On 21 June 2018 at 19:22, Adrian Hunter wrote: > On 15/06/18 05:04, Chunyan Zhang wrote: >> According to the SD host controller specification version 4.10, when >> Host Version 4 is enabled, SDMA uses ADMA System Address register >> (05Fh-058h) instead of using SDMA System Address register to >> support both 32-bit and 64-bit addressing. >> >> Signed-off-by: Chunyan Zhang >> --- >> drivers/mmc/host/sdhci.c | 10 -- >> 1 file changed, 8 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c >> index cf5695f..f57201f 100644 >> --- a/drivers/mmc/host/sdhci.c >> +++ b/drivers/mmc/host/sdhci.c >> @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, >> struct mmc_command *cmd) >> static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command >> *cmd) >> { >> u8 ctrl; >> + u32 reg; > > reg could just be an int. Why? Shouldn't addresses be unsigned? > >> struct mmc_data *data = cmd->data; >> >> if (sdhci_data_line_cmd(cmd)) >> @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, >> struct mmc_command *cmd) >>SDHCI_ADMA_ADDRESS_HI); >> } else { >> WARN_ON(sg_cnt != 1); >> + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : >> + SDHCI_DMA_ADDRESS; >> sdhci_writel(host, sdhci_sdma_address(host), >> - SDHCI_DMA_ADDRESS); >> + reg); > > Shouldn't we support 64-bit SDMA in version 4 mode? I will address. > > >> } >> } >> >> @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, >> u32 intmask) >>*/ >> if (intmask & SDHCI_INT_DMA_END) { >> u32 dmastart, dmanow; >> + u32 reg; >> >> dmastart = sdhci_sdma_address(host); >> dmanow = dmastart + host->data->bytes_xfered; >> @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, >> u32 intmask) >> host->data->bytes_xfered = dmanow - dmastart; >> DBG("DMA base 0x%08x, transferred 0x%06x bytes, next >> 0x%08x\n", >> dmastart, host->data->bytes_xfered, dmanow); >> - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); >> + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : >> + SDHCI_DMA_ADDRESS; >> + sdhci_writel(host, dmanow, reg); > > Shouldn't we support 64-bit SDMA in version 4 mode? > >> } >> >> if (intmask & SDHCI_INT_DATA_END) { >> >
Re: [PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
On 21 June 2018 at 19:22, Adrian Hunter wrote: > On 15/06/18 05:04, Chunyan Zhang wrote: >> According to the SD host controller specification version 4.10, when >> Host Version 4 is enabled, SDMA uses ADMA System Address register >> (05Fh-058h) instead of using SDMA System Address register to >> support both 32-bit and 64-bit addressing. >> >> Signed-off-by: Chunyan Zhang >> --- >> drivers/mmc/host/sdhci.c | 10 -- >> 1 file changed, 8 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c >> index cf5695f..f57201f 100644 >> --- a/drivers/mmc/host/sdhci.c >> +++ b/drivers/mmc/host/sdhci.c >> @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, >> struct mmc_command *cmd) >> static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command >> *cmd) >> { >> u8 ctrl; >> + u32 reg; > > reg could just be an int. Why? Shouldn't addresses be unsigned? > >> struct mmc_data *data = cmd->data; >> >> if (sdhci_data_line_cmd(cmd)) >> @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, >> struct mmc_command *cmd) >>SDHCI_ADMA_ADDRESS_HI); >> } else { >> WARN_ON(sg_cnt != 1); >> + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : >> + SDHCI_DMA_ADDRESS; >> sdhci_writel(host, sdhci_sdma_address(host), >> - SDHCI_DMA_ADDRESS); >> + reg); > > Shouldn't we support 64-bit SDMA in version 4 mode? I will address. > > >> } >> } >> >> @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, >> u32 intmask) >>*/ >> if (intmask & SDHCI_INT_DMA_END) { >> u32 dmastart, dmanow; >> + u32 reg; >> >> dmastart = sdhci_sdma_address(host); >> dmanow = dmastart + host->data->bytes_xfered; >> @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, >> u32 intmask) >> host->data->bytes_xfered = dmanow - dmastart; >> DBG("DMA base 0x%08x, transferred 0x%06x bytes, next >> 0x%08x\n", >> dmastart, host->data->bytes_xfered, dmanow); >> - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); >> + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : >> + SDHCI_DMA_ADDRESS; >> + sdhci_writel(host, dmanow, reg); > > Shouldn't we support 64-bit SDMA in version 4 mode? > >> } >> >> if (intmask & SDHCI_INT_DATA_END) { >> >
Re: [PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
On 15/06/18 05:04, Chunyan Zhang wrote: > According to the SD host controller specification version 4.10, when > Host Version 4 is enabled, SDMA uses ADMA System Address register > (05Fh-058h) instead of using SDMA System Address register to > support both 32-bit and 64-bit addressing. > > Signed-off-by: Chunyan Zhang > --- > drivers/mmc/host/sdhci.c | 10 -- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > index cf5695f..f57201f 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, > struct mmc_command *cmd) > static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command > *cmd) > { > u8 ctrl; > + u32 reg; reg could just be an int. > struct mmc_data *data = cmd->data; > > if (sdhci_data_line_cmd(cmd)) > @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, > struct mmc_command *cmd) >SDHCI_ADMA_ADDRESS_HI); > } else { > WARN_ON(sg_cnt != 1); > + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : > + SDHCI_DMA_ADDRESS; > sdhci_writel(host, sdhci_sdma_address(host), > - SDHCI_DMA_ADDRESS); > + reg); Shouldn't we support 64-bit SDMA in version 4 mode? > } > } > > @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 > intmask) >*/ > if (intmask & SDHCI_INT_DMA_END) { > u32 dmastart, dmanow; > + u32 reg; > > dmastart = sdhci_sdma_address(host); > dmanow = dmastart + host->data->bytes_xfered; > @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 > intmask) > host->data->bytes_xfered = dmanow - dmastart; > DBG("DMA base 0x%08x, transferred 0x%06x bytes, next > 0x%08x\n", > dmastart, host->data->bytes_xfered, dmanow); > - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); > + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : > + SDHCI_DMA_ADDRESS; > + sdhci_writel(host, dmanow, reg); Shouldn't we support 64-bit SDMA in version 4 mode? > } > > if (intmask & SDHCI_INT_DATA_END) { >
Re: [PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
On 15/06/18 05:04, Chunyan Zhang wrote: > According to the SD host controller specification version 4.10, when > Host Version 4 is enabled, SDMA uses ADMA System Address register > (05Fh-058h) instead of using SDMA System Address register to > support both 32-bit and 64-bit addressing. > > Signed-off-by: Chunyan Zhang > --- > drivers/mmc/host/sdhci.c | 10 -- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > index cf5695f..f57201f 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, > struct mmc_command *cmd) > static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command > *cmd) > { > u8 ctrl; > + u32 reg; reg could just be an int. > struct mmc_data *data = cmd->data; > > if (sdhci_data_line_cmd(cmd)) > @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, > struct mmc_command *cmd) >SDHCI_ADMA_ADDRESS_HI); > } else { > WARN_ON(sg_cnt != 1); > + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : > + SDHCI_DMA_ADDRESS; > sdhci_writel(host, sdhci_sdma_address(host), > - SDHCI_DMA_ADDRESS); > + reg); Shouldn't we support 64-bit SDMA in version 4 mode? > } > } > > @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 > intmask) >*/ > if (intmask & SDHCI_INT_DMA_END) { > u32 dmastart, dmanow; > + u32 reg; > > dmastart = sdhci_sdma_address(host); > dmanow = dmastart + host->data->bytes_xfered; > @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 > intmask) > host->data->bytes_xfered = dmanow - dmastart; > DBG("DMA base 0x%08x, transferred 0x%06x bytes, next > 0x%08x\n", > dmastart, host->data->bytes_xfered, dmanow); > - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); > + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : > + SDHCI_DMA_ADDRESS; > + sdhci_writel(host, dmanow, reg); Shouldn't we support 64-bit SDMA in version 4 mode? > } > > if (intmask & SDHCI_INT_DATA_END) { >
[PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
According to the SD host controller specification version 4.10, when Host Version 4 is enabled, SDMA uses ADMA System Address register (05Fh-058h) instead of using SDMA System Address register to support both 32-bit and 64-bit addressing. Signed-off-by: Chunyan Zhang --- drivers/mmc/host/sdhci.c | 10 -- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index cf5695f..f57201f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) { u8 ctrl; + u32 reg; struct mmc_data *data = cmd->data; if (sdhci_data_line_cmd(cmd)) @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) SDHCI_ADMA_ADDRESS_HI); } else { WARN_ON(sg_cnt != 1); + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : + SDHCI_DMA_ADDRESS; sdhci_writel(host, sdhci_sdma_address(host), -SDHCI_DMA_ADDRESS); +reg); } } @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) */ if (intmask & SDHCI_INT_DMA_END) { u32 dmastart, dmanow; + u32 reg; dmastart = sdhci_sdma_address(host); dmanow = dmastart + host->data->bytes_xfered; @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) host->data->bytes_xfered = dmanow - dmastart; DBG("DMA base 0x%08x, transferred 0x%06x bytes, next 0x%08x\n", dmastart, host->data->bytes_xfered, dmanow); - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : + SDHCI_DMA_ADDRESS; + sdhci_writel(host, dmanow, reg); } if (intmask & SDHCI_INT_DATA_END) { -- 2.7.4
[PATCH V2 2/7] mmc: sdhci: made changes for System Address register of SDMA
According to the SD host controller specification version 4.10, when Host Version 4 is enabled, SDMA uses ADMA System Address register (05Fh-058h) instead of using SDMA System Address register to support both 32-bit and 64-bit addressing. Signed-off-by: Chunyan Zhang --- drivers/mmc/host/sdhci.c | 10 -- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index cf5695f..f57201f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -805,6 +805,7 @@ static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) { u8 ctrl; + u32 reg; struct mmc_data *data = cmd->data; if (sdhci_data_line_cmd(cmd)) @@ -894,8 +895,10 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) SDHCI_ADMA_ADDRESS_HI); } else { WARN_ON(sg_cnt != 1); + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : + SDHCI_DMA_ADDRESS; sdhci_writel(host, sdhci_sdma_address(host), -SDHCI_DMA_ADDRESS); +reg); } } @@ -2721,6 +2724,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) */ if (intmask & SDHCI_INT_DMA_END) { u32 dmastart, dmanow; + u32 reg; dmastart = sdhci_sdma_address(host); dmanow = dmastart + host->data->bytes_xfered; @@ -2733,7 +2737,9 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) host->data->bytes_xfered = dmanow - dmastart; DBG("DMA base 0x%08x, transferred 0x%06x bytes, next 0x%08x\n", dmastart, host->data->bytes_xfered, dmanow); - sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS); + reg = host->v4_mode ? SDHCI_ADMA_ADDRESS : + SDHCI_DMA_ADDRESS; + sdhci_writel(host, dmanow, reg); } if (intmask & SDHCI_INT_DATA_END) { -- 2.7.4