Tomas Winkler wrote:
> Add Intel Wireless MultiCom 3200 SDIO BT driver
> IWMC3200 is 4Wireless Com CHIP (GPS/BT/WiFi/WiMAX).
> wmc3200bt is derived from btsdio driver
Can you list the hardware differences between this chip and the standard?
> + unsigned char tx_buf[2048];
> + unsigned char rx_buf[2048];
I don't think these buffers are cache line aligned so can't be used for DMA.
> + /* in IWMC_BT we need to read the transfer length
> + * before interrupt clearing */
> + val1 = sdio_readb(data->func, REG_H2D_COUNT_L, &err);
> + IBT_DBG(data->func, "%s to read len1,"
> + " reg_addr=%x ret=%d val=%x\n",
> + err ? "Failed" : "Succeeded",
> + REG_H2D_COUNT_L, err, err ? 0xff : val1);
> + if (err == 0) {
> + val2 = sdio_readb(data->func, REG_H2D_COUNT_H, &err);
> + IBT_DBG(data->func, "%s to read len2,"
> + " reg_addr=%x ret=%d val=%x\n",
> + err ? "Failed" : "Succeeded",
> + REG_H2D_COUNT_H, err, err ? 0xff : val2);
Wow. Intel really messed up the hardware here. An extra two SDIO
commands per packet? I guess no one was thinking of performance...
David
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David Vrabel, Senior Software Engineer, Drivers
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