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mmc: sdhci: Define ADMA constants

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Define all the ADMA constants instead of having numbers
scattered throughout the code.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2014-11-04 12:42:44 +02:00 committed by Ulf Hansson
parent 4fb213f81f
commit 739d46dcc2
2 changed files with 23 additions and 10 deletions
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23
drivers/mmc/host/sdhci.c
View File

@ -464,7 +464,7 @@ static void sdhci_adma_mark_end(void *desc)
{
u8 *dma_desc = desc;
dma_desc[0] |= 0x2; /* end */
dma_desc[0] |= ADMA2_END;
}
static int sdhci_adma_table_pre(struct sdhci_host *host,
@ -532,7 +532,8 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
}
/* tran, valid */
sdhci_adma_write_desc(desc, align_addr, offset, 0x21);
sdhci_adma_write_desc(desc, align_addr, offset,
ADMA2_TRAN_VALID);
BUG_ON(offset > 65536);
@ -548,7 +549,7 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
BUG_ON(len > 65536);
/* tran, valid */
sdhci_adma_write_desc(desc, addr, len, 0x21);
sdhci_adma_write_desc(desc, addr, len, ADMA2_TRAN_VALID);
desc += host->desc_sz;
/*
@ -572,7 +573,7 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
*/
/* nop, end, valid */
sdhci_adma_write_desc(desc, 0, 0, 0x3);
sdhci_adma_write_desc(desc, 0, 0, ADMA2_NOP_END_VALID);
}
/*
@ -2312,7 +2313,7 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
desc += host->desc_sz;
if (attr & 2)
if (attr & ADMA2_END)
break;
}
}
@ -2877,11 +2878,13 @@ int sdhci_add_host(struct sdhci_host *host)
* descriptor for each segment, plus 1 for a nop end descriptor,
* all multipled by the descriptor size.
*/
host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) * 8;
host->align_buffer_sz = SDHCI_MAX_SEGS * 4;
host->desc_sz = 8;
host->align_sz = 4;
host->align_mask = 3;
host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) *
SDHCI_ADMA2_32_DESC_SZ;
host->align_buffer_sz = SDHCI_MAX_SEGS *
SDHCI_ADMA2_32_ALIGN;
host->desc_sz = SDHCI_ADMA2_32_DESC_SZ;
host->align_sz = SDHCI_ADMA2_32_ALIGN;
host->align_mask = SDHCI_ADMA2_32_ALIGN - 1;
host->adma_table = dma_alloc_coherent(mmc_dev(mmc),
host->adma_table_sz,
&host->adma_addr,

10
drivers/mmc/host/sdhci.h
View File

@ -266,6 +266,16 @@
#define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
#define SDHCI_DEFAULT_BOUNDARY_ARG (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)
/* ADMA2 32-bit DMA descriptor size */
#define SDHCI_ADMA2_32_DESC_SZ 8
/* ADMA2 32-bit DMA alignment */
#define SDHCI_ADMA2_32_ALIGN 4
#define ADMA2_TRAN_VALID 0x21
#define ADMA2_NOP_END_VALID 0x3
#define ADMA2_END 0x2
/*
* Maximum segments assuming a 512KiB maximum requisition size and a minimum
* 4KiB page size.