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-rw-r--r--drivers/mmc/bfin_sdh.c25
-rw-r--r--drivers/net/bfin_mac.c68
-rw-r--r--drivers/spi/bfin_spi.c155
3 files changed, 179 insertions, 69 deletions
diff --git a/drivers/mmc/bfin_sdh.c b/drivers/mmc/bfin_sdh.c
index 4a77779..27d9bf6 100644
--- a/drivers/mmc/bfin_sdh.c
+++ b/drivers/mmc/bfin_sdh.c
@@ -58,27 +58,29 @@
static int
sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd)
{
- unsigned int sdh_cmd;
- unsigned int status;
+ unsigned int status, timeout;
int cmd = mmc_cmd->cmdidx;
int flags = mmc_cmd->resp_type;
int arg = mmc_cmd->cmdarg;
- int ret = 0;
- sdh_cmd = 0;
-
- sdh_cmd |= cmd;
+ int ret;
+ u16 sdh_cmd;
+ sdh_cmd = cmd | CMD_E;
if (flags & MMC_RSP_PRESENT)
sdh_cmd |= CMD_RSP;
-
if (flags & MMC_RSP_136)
sdh_cmd |= CMD_L_RSP;
bfin_write_SDH_ARGUMENT(arg);
- bfin_write_SDH_COMMAND(sdh_cmd | CMD_E);
+ bfin_write_SDH_COMMAND(sdh_cmd);
/* wait for a while */
+ timeout = 0;
do {
+ if (++timeout > 1000000) {
+ status = CMD_TIME_OUT;
+ break;
+ }
udelay(1);
status = bfin_read_SDH_STATUS();
} while (!(status & (CMD_SENT | CMD_RESP_END | CMD_TIME_OUT |
@@ -94,12 +96,15 @@ sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd)
}
if (status & CMD_TIME_OUT)
- ret |= TIMEOUT;
+ ret = TIMEOUT;
else if (status & CMD_CRC_FAIL && flags & MMC_RSP_CRC)
- ret |= COMM_ERR;
+ ret = COMM_ERR;
+ else
+ ret = 0;
bfin_write_SDH_STATUS_CLR(CMD_SENT_STAT | CMD_RESP_END_STAT |
CMD_TIMEOUT_STAT | CMD_CRC_FAIL_STAT);
+
return ret;
}
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index 36d4046..dcc781a 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -131,12 +131,12 @@ static int bfin_EMAC_send(struct eth_device *dev, volatile void *packet,
goto out;
}
- if ((*pDMA2_IRQ_STATUS & DMA_ERR) != 0) {
+ if (bfin_read_DMA2_IRQ_STATUS() & DMA_ERR) {
printf("Ethernet: tx DMA error\n");
goto out;
}
- for (i = 0; (*pDMA2_IRQ_STATUS & DMA_RUN) != 0; i++) {
+ for (i = 0; (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN); ++i) {
if (i > TOUT_LOOP) {
puts("Ethernet: tx time out\n");
goto out;
@@ -145,9 +145,9 @@ static int bfin_EMAC_send(struct eth_device *dev, volatile void *packet,
txbuf[txIdx]->FrmData->NoBytes = length;
memcpy(txbuf[txIdx]->FrmData->Dest, (void *)packet, length);
txbuf[txIdx]->Dma[0].START_ADDR = (u32) txbuf[txIdx]->FrmData;
- *pDMA2_NEXT_DESC_PTR = txbuf[txIdx]->Dma;
- *pDMA2_CONFIG = txdmacfg.data;
- *pEMAC_OPMODE |= TE;
+ bfin_write_DMA2_NEXT_DESC_PTR(txbuf[txIdx]->Dma);
+ bfin_write_DMA2_CONFIG(txdmacfg.data);
+ bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
for (i = 0; (txbuf[txIdx]->StatusWord & TX_COMP) == 0; i++) {
if (i > TOUT_LOOP) {
@@ -194,7 +194,7 @@ static int bfin_EMAC_recv(struct eth_device *dev)
NetRxPackets[rxIdx] =
(volatile uchar *)(rxbuf[rxIdx]->FrmData->Dest);
NetReceive(NetRxPackets[rxIdx], length - 4);
- *pDMA1_IRQ_STATUS |= DMA_DONE | DMA_ERR;
+ bfin_write_DMA1_IRQ_STATUS(DMA_DONE | DMA_ERR);
rxbuf[rxIdx]->StatusWord = 0x00000000;
if ((rxIdx + 1) >= PKTBUFSRX)
rxIdx = 0;
@@ -229,7 +229,7 @@ static int bfin_miiphy_init(struct eth_device *dev, int *opmode)
size_t count;
/* Enable PHY output */
- *pVR_CTL |= CLKBUFOE;
+ bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE);
/* Set all the pins to peripheral mode */
peripheral_request_list(pins, "bfin_mac");
@@ -265,30 +265,32 @@ static int bfin_miiphy_init(struct eth_device *dev, int *opmode)
bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
/* Initialize the TX DMA channel registers */
- *pDMA2_X_COUNT = 0;
- *pDMA2_X_MODIFY = 4;
- *pDMA2_Y_COUNT = 0;
- *pDMA2_Y_MODIFY = 0;
+ bfin_write_DMA2_X_COUNT(0);
+ bfin_write_DMA2_X_MODIFY(4);
+ bfin_write_DMA2_Y_COUNT(0);
+ bfin_write_DMA2_Y_MODIFY(0);
/* Initialize the RX DMA channel registers */
- *pDMA1_X_COUNT = 0;
- *pDMA1_X_MODIFY = 4;
- *pDMA1_Y_COUNT = 0;
- *pDMA1_Y_MODIFY = 0;
+ bfin_write_DMA1_X_COUNT(0);
+ bfin_write_DMA1_X_MODIFY(4);
+ bfin_write_DMA1_Y_COUNT(0);
+ bfin_write_DMA1_Y_MODIFY(0);
return 0;
}
static int bfin_EMAC_setup_addr(struct eth_device *dev)
{
- *pEMAC_ADDRLO =
+ bfin_write_EMAC_ADDRLO(
dev->enetaddr[0] |
dev->enetaddr[1] << 8 |
dev->enetaddr[2] << 16 |
- dev->enetaddr[3] << 24;
- *pEMAC_ADDRHI =
+ dev->enetaddr[3] << 24
+ );
+ bfin_write_EMAC_ADDRHI(
dev->enetaddr[4] |
- dev->enetaddr[5] << 8;
+ dev->enetaddr[5] << 8
+ );
return 0;
}
@@ -328,8 +330,8 @@ static int bfin_EMAC_init(struct eth_device *dev, bd_t *bd)
}
/* Set RX DMA */
- *pDMA1_NEXT_DESC_PTR = rxbuf[0]->Dma;
- *pDMA1_CONFIG = rxbuf[0]->Dma[0].CONFIG_DATA;
+ bfin_write_DMA1_NEXT_DESC_PTR(rxbuf[0]->Dma);
+ bfin_write_DMA1_CONFIG(rxbuf[0]->Dma[0].CONFIG_DATA);
/* Wait MII done */
bfin_miiphy_wait();
@@ -350,7 +352,7 @@ static int bfin_EMAC_init(struct eth_device *dev, bd_t *bd)
opmode |= TE | RMII;
#endif
/* Turn on the EMAC */
- *pEMAC_OPMODE = opmode;
+ bfin_write_EMAC_OPMODE(opmode);
return 0;
}
@@ -358,11 +360,10 @@ static void bfin_EMAC_halt(struct eth_device *dev)
{
debug("Eth_halt: ......\n");
/* Turn off the EMAC */
- *pEMAC_OPMODE = 0x00000000;
+ bfin_write_EMAC_OPMODE(0);
/* Turn off the EMAC RX DMA */
- *pDMA1_CONFIG = 0x0000;
- *pDMA2_CONFIG = 0x0000;
-
+ bfin_write_DMA1_CONFIG(0);
+ bfin_write_DMA2_CONFIG(0);
}
ADI_ETHER_BUFFER *SetupRxBuffer(int no)
@@ -443,16 +444,19 @@ int ether_post_test(int flags)
uchar buf[64];
int i, value = 0;
int length;
+ uint addr;
printf("\n--------");
bfin_EMAC_init(NULL, NULL);
/* construct the package */
- buf[0] = buf[6] = (unsigned char)(*pEMAC_ADDRLO & 0xFF);
- buf[1] = buf[7] = (unsigned char)((*pEMAC_ADDRLO & 0xFF00) >> 8);
- buf[2] = buf[8] = (unsigned char)((*pEMAC_ADDRLO & 0xFF0000) >> 16);
- buf[3] = buf[9] = (unsigned char)((*pEMAC_ADDRLO & 0xFF000000) >> 24);
- buf[4] = buf[10] = (unsigned char)(*pEMAC_ADDRHI & 0xFF);
- buf[5] = buf[11] = (unsigned char)((*pEMAC_ADDRHI & 0xFF00) >> 8);
+ addr = bfin_read_EMAC_ADDRLO();
+ buf[0] = buf[6] = addr;
+ buf[1] = buf[7] = addr >> 8;
+ buf[2] = buf[8] = addr >> 16;
+ buf[3] = buf[9] = addr >> 24;
+ addr = bfin_read_EMAC_ADDRHI();
+ buf[4] = buf[10] = addr;
+ buf[5] = buf[11] = addr >> 8;
buf[12] = 0x08; /* Type: ARP */
buf[13] = 0x06;
buf[14] = 0x00; /* Hardware type: Ethernet */
diff --git a/drivers/spi/bfin_spi.c b/drivers/spi/bfin_spi.c
index 556b97a..d7e1474 100644
--- a/drivers/spi/bfin_spi.c
+++ b/drivers/spi/bfin_spi.c
@@ -1,7 +1,7 @@
/*
* Driver for Blackfin On-Chip SPI device
*
- * Copyright (c) 2005-2008 Analog Devices Inc.
+ * Copyright (c) 2005-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -13,6 +13,7 @@
#include <spi.h>
#include <asm/blackfin.h>
+#include <asm/dma.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/spi.h>
@@ -237,10 +238,131 @@ void spi_release_bus(struct spi_slave *slave)
SSYNC();
}
+#ifdef __ADSPBF54x__
+# define SPI_DMA_BASE DMA4_NEXT_DESC_PTR
+#elif defined(__ADSPBF533__) || defined(__ADSPBF532__) || defined(__ADSPBF531__) || \
+ defined(__ADSPBF538__) || defined(__ADSPBF539__)
+# define SPI_DMA_BASE DMA5_NEXT_DESC_PTR
+#elif defined(__ADSPBF561__)
+# define SPI_DMA_BASE DMA2_4_NEXT_DESC_PTR
+#elif defined(__ADSPBF537__) || defined(__ADSPBF536__) || defined(__ADSPBF534__) || \
+ defined(__ADSPBF52x__) || defined(__ADSPBF51x__)
+# define SPI_DMA_BASE DMA7_NEXT_DESC_PTR
+#else
+# error "Please provide SPI DMA channel defines"
+#endif
+static volatile struct dma_register *dma = (void *)SPI_DMA_BASE;
+
#ifndef CONFIG_BFIN_SPI_IDLE_VAL
# define CONFIG_BFIN_SPI_IDLE_VAL 0xff
#endif
+#ifdef CONFIG_BFIN_SPI_NO_DMA
+# define SPI_DMA 0
+#else
+# define SPI_DMA 1
+#endif
+
+static int spi_dma_xfer(struct bfin_spi_slave *bss, const u8 *tx, u8 *rx,
+ uint bytes)
+{
+ int ret = -1;
+ u16 ndsize, spi_config, dma_config;
+ struct dmasg dmasg[2];
+ const u8 *buf;
+
+ if (tx) {
+ debug("%s: doing half duplex TX\n", __func__);
+ buf = tx;
+ spi_config = TDBR_DMA;
+ dma_config = 0;
+ } else {
+ debug("%s: doing half duplex RX\n", __func__);
+ buf = rx;
+ spi_config = RDBR_DMA;
+ dma_config = WNR;
+ }
+
+ dmasg[0].start_addr = (unsigned long)buf;
+ dmasg[0].x_modify = 1;
+ dma_config |= WDSIZE_8 | DMAEN;
+ if (bytes <= 65536) {
+ blackfin_dcache_flush_invalidate_range(buf, buf + bytes);
+ ndsize = NDSIZE_5;
+ dmasg[0].cfg = NDSIZE_0 | dma_config | FLOW_STOP | DI_EN;
+ dmasg[0].x_count = bytes;
+ } else {
+ blackfin_dcache_flush_invalidate_range(buf, buf + 65536 - 1);
+ ndsize = NDSIZE_7;
+ dmasg[0].cfg = NDSIZE_5 | dma_config | FLOW_ARRAY | DMA2D;
+ dmasg[0].x_count = 0; /* 2^16 */
+ dmasg[0].y_count = bytes >> 16; /* count / 2^16 */
+ dmasg[0].y_modify = 1;
+ dmasg[1].start_addr = (unsigned long)(buf + (bytes & ~0xFFFF));
+ dmasg[1].cfg = NDSIZE_0 | dma_config | FLOW_STOP | DI_EN;
+ dmasg[1].x_count = bytes & 0xFFFF; /* count % 2^16 */
+ dmasg[1].x_modify = 1;
+ }
+
+ dma->cfg = 0;
+ dma->irq_status = DMA_DONE | DMA_ERR;
+ dma->curr_desc_ptr = dmasg;
+ write_SPI_CTL(bss, (bss->ctl & ~TDBR_CORE));
+ write_SPI_STAT(bss, -1);
+ SSYNC();
+
+ write_SPI_TDBR(bss, CONFIG_BFIN_SPI_IDLE_VAL);
+ dma->cfg = ndsize | FLOW_ARRAY | DMAEN;
+ write_SPI_CTL(bss, (bss->ctl & ~TDBR_CORE) | spi_config);
+ SSYNC();
+
+ /*
+ * We already invalidated the first 64k,
+ * now while we just wait invalidate the remaining part.
+ * Its not likely that the DMA is going to overtake
+ */
+ if (bytes > 65536)
+ blackfin_dcache_flush_invalidate_range(buf + 65536, buf + bytes);
+
+ while (!(dma->irq_status & DMA_DONE))
+ if (ctrlc())
+ goto done;
+
+ dma->cfg = 0;
+
+ ret = 0;
+ done:
+ write_SPI_CTL(bss, bss->ctl);
+ return ret;
+}
+
+static int spi_pio_xfer(struct bfin_spi_slave *bss, const u8 *tx, u8 *rx,
+ uint bytes)
+{
+ /* todo: take advantage of hardware fifos */
+ while (bytes--) {
+ u8 value = (tx ? *tx++ : CONFIG_BFIN_SPI_IDLE_VAL);
+ debug("%s: tx:%x ", __func__, value);
+ write_SPI_TDBR(bss, value);
+ SSYNC();
+ while ((read_SPI_STAT(bss) & TXS))
+ if (ctrlc())
+ return -1;
+ while (!(read_SPI_STAT(bss) & SPIF))
+ if (ctrlc())
+ return -1;
+ while (!(read_SPI_STAT(bss) & RXS))
+ if (ctrlc())
+ return -1;
+ value = read_SPI_RDBR(bss);
+ if (rx)
+ *rx++ = value;
+ debug("rx:%x\n", value);
+ }
+
+ return 0;
+}
+
int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
void *din, unsigned long flags)
{
@@ -265,32 +387,11 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
if (flags & SPI_XFER_BEGIN)
spi_cs_activate(slave);
- /* todo: take advantage of hardware fifos and setup RX dma */
- while (bytes--) {
- u8 value = (tx ? *tx++ : CONFIG_BFIN_SPI_IDLE_VAL);
- debug("%s: tx:%x ", __func__, value);
- write_SPI_TDBR(bss, value);
- SSYNC();
- while ((read_SPI_STAT(bss) & TXS))
- if (ctrlc()) {
- ret = -1;
- goto done;
- }
- while (!(read_SPI_STAT(bss) & SPIF))
- if (ctrlc()) {
- ret = -1;
- goto done;
- }
- while (!(read_SPI_STAT(bss) & RXS))
- if (ctrlc()) {
- ret = -1;
- goto done;
- }
- value = read_SPI_RDBR(bss);
- if (rx)
- *rx++ = value;
- debug("rx:%x\n", value);
- }
+ /* TX DMA doesn't work quite right */
+ if (SPI_DMA && bytes > 6 && (!tx /*|| !rx*/))
+ ret = spi_dma_xfer(bss, tx, rx, bytes);
+ else
+ ret = spi_pio_xfer(bss, tx, rx, bytes);
done:
if (flags & SPI_XFER_END)
generated by cgit v1.1 at 2024-12-17 02:54:38 +0000