[PATCH] Fix IDE commands issued, fix endian issues, fix non MMIO
Heinrich Schuchardt
xypron.glpk at gmx.de
Wed Feb 24 18:57:08 CET 2021
On 24.02.21 17:44, Reinoud Zandijk wrote:
>
> Fixes IDE issues found on the Malta board under Qemu:
>
> 1) DMA implied commands were sent to the controller in stead of the PIO
> variants. The rest of the code is DMA free and written for PIO operation.
>
> 2) direct pointer access was used to read and write the registers instead
> of the inb/inw/outb/outw functions/macros. Registers don't have to be
> memory mapped and ATA_CURR_BASE() does not have to return an offset from
> address zero.
>
> 3) Endian isues in ide_ident() and reading/writing data in general. Names
> were corrupted and sizes misreported.
It is preferable to have each issue fixed in a separate patch.
>
> Tested malta_defconfig and maltael_defconfig to work again in Qemu.
What about the other architectures which can use the driver?
@Simon:
Can we get rid of U_BOOT_LEGACY_BLK(ide)?
Best regards
Heinrich
>
>
> Signed-off-by: Reinoud Zandijk <reinoud at NetBSD.org>
>
> ---
> drivers/block/ide.c | 152 +++++++++++++-------------------------------
> include/ata.h | 2 +-
> 2 files changed, 44 insertions(+), 110 deletions(-)
>
> diff --git a/drivers/block/ide.c b/drivers/block/ide.c
> index 43a0776099..862a85bc87 100644
> --- a/drivers/block/ide.c
> +++ b/drivers/block/ide.c
> @@ -130,56 +130,38 @@ OUT:
> * ATAPI Support
> */
>
> -#if defined(CONFIG_IDE_SWAP_IO)
> /* since ATAPI may use commands with not 4 bytes alligned length
> * we have our own transfer functions, 2 bytes alligned */
> __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
> {
> + uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
> ushort *dbuf;
> - volatile ushort *pbuf;
>
> - pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
> dbuf = (ushort *)sect_buf;
>
> - debug("in output data shorts base for read is %lx\n",
> - (unsigned long) pbuf);
> + debug("in output data shorts base for read is %p\n", (void *)paddr);
>
> while (shorts--) {
> EIEIO;
> - *pbuf = *dbuf++;
> + outw(cpu_to_le16(*dbuf++), paddr);
> }
> }
>
> __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
> {
> + uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
> ushort *dbuf;
> - volatile ushort *pbuf;
>
> - pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
> dbuf = (ushort *)sect_buf;
>
> - debug("in input data shorts base for read is %lx\n",
> - (unsigned long) pbuf);
> + debug("in input data shorts base for read is %p\n", (void *)paddr);
>
> while (shorts--) {
> EIEIO;
> - *dbuf++ = *pbuf;
> + *dbuf++ = le16_to_cpu(inw(paddr));
> }
> }
>
> -#else /* ! CONFIG_IDE_SWAP_IO */
> -__weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
> -{
> - outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
> -}
> -
> -__weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
> -{
> - insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
> -}
> -
> -#endif /* CONFIG_IDE_SWAP_IO */
> -
> /*
> * Wait until (Status & mask) == res, or timeout (in ms)
> * Return last status
> @@ -636,19 +618,6 @@ static void ide_ident(struct blk_desc *dev_desc)
> sizeof(dev_desc->vendor));
> ident_cpy((unsigned char *)dev_desc->product, iop.serial_no,
> sizeof(dev_desc->product));
> -#ifdef __LITTLE_ENDIAN
> - /*
> - * firmware revision, model, and serial number have Big Endian Byte
> - * order in Word. Convert all three to little endian.
> - *
> - * See CF+ and CompactFlash Specification Revision 2.0:
> - * 6.2.1.6: Identify Drive, Table 39 for more details
> - */
> -
> - strswab(dev_desc->revision);
> - strswab(dev_desc->vendor);
> - strswab(dev_desc->product);
> -#endif /* __LITTLE_ENDIAN */
>
> if ((iop.config & 0x0080) == 0x0080)
> dev_desc->removable = 1;
> @@ -662,26 +631,22 @@ static void ide_ident(struct blk_desc *dev_desc)
> }
> #endif /* CONFIG_ATAPI */
>
> -#ifdef __BIG_ENDIAN
> - /* swap shorts */
> - dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
> -#else /* ! __BIG_ENDIAN */
> - /*
> - * do not swap shorts on little endian
> - *
> - * See CF+ and CompactFlash Specification Revision 2.0:
> - * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
> - */
> - dev_desc->lba = iop.lba_capacity;
> -#endif /* __BIG_ENDIAN */
> + iop.lba_capacity[0] = be16_to_cpu(iop.lba_capacity[0]);
> + iop.lba_capacity[1] = be16_to_cpu(iop.lba_capacity[1]);
> + dev_desc->lba =
> + ((unsigned long)iop.lba_capacity[0]) |
> + ((unsigned long)iop.lba_capacity[1] << 16);
>
> #ifdef CONFIG_LBA48
> if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
> dev_desc->lba48 = 1;
> - dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
> - ((unsigned long long) iop.lba48_capacity[1] << 16) |
> - ((unsigned long long) iop.lba48_capacity[2] << 32) |
> - ((unsigned long long) iop.lba48_capacity[3] << 48);
> + for (int i = 0; i < 4; i++)
> + iop.lba48_capacity[i] = be16_to_cpu(iop.lba48_capacity[i]);
> + dev_desc->lba =
> + ((unsigned long long)iop.lba48_capacity[0] |
> + ((unsigned long long)iop.lba48_capacity[1] << 16) |
> + ((unsigned long long)iop.lba48_capacity[2] << 32) |
> + ((unsigned long long)iop.lba48_capacity[3] << 48));
> } else {
> dev_desc->lba48 = 0;
> }
> @@ -846,90 +811,59 @@ void ide_init(void)
> #endif
> }
>
> -/* We only need to swap data if we are running on a big endian cpu. */
> -#if defined(__LITTLE_ENDIAN)
> __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
> {
> - ide_input_data(dev, sect_buf, words);
> -}
> -#else
> -__weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
> -{
> - volatile ushort *pbuf =
> - (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
> + uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
> ushort *dbuf = (ushort *)sect_buf;
>
> - debug("in input swap data base for read is %lx\n",
> - (unsigned long) pbuf);
> + debug("in input swap data base for read is %p\n", (void *)paddr);
>
> while (words--) {
> -#ifdef __MIPS__
> - *dbuf++ = swab16p((u16 *)pbuf);
> - *dbuf++ = swab16p((u16 *)pbuf);
> -#else
> - *dbuf++ = ld_le16(pbuf);
> - *dbuf++ = ld_le16(pbuf);
> -#endif /* !MIPS */
> + EIEIO;
> + *dbuf++ = be16_to_cpu(inw(paddr));
> + EIEIO;
> + *dbuf++ = be16_to_cpu(inw(paddr));
> }
> }
> -#endif /* __LITTLE_ENDIAN */
> -
>
> -#if defined(CONFIG_IDE_SWAP_IO)
> __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
> {
> +#if defined(CONFIG_IDE_AHB)
> + ide_write_data(dev, sect_buf, words);
> +#else
> + uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
> ushort *dbuf;
> - volatile ushort *pbuf;
>
> - pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
> dbuf = (ushort *)sect_buf;
> while (words--) {
> EIEIO;
> - *pbuf = *dbuf++;
> + outw(cpu_to_le16(*dbuf++), paddr);
> EIEIO;
> - *pbuf = *dbuf++;
> + outw(cpu_to_le16(*dbuf++), paddr);
> }
> +#endif /* CONFIG_IDE_AHB */
> }
> -#else /* ! CONFIG_IDE_SWAP_IO */
> -__weak void ide_output_data(int dev, const ulong *sect_buf, int words)
> -{
> -#if defined(CONFIG_IDE_AHB)
> - ide_write_data(dev, sect_buf, words);
> -#else
> - outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
> -#endif
> -}
> -#endif /* CONFIG_IDE_SWAP_IO */
>
> -#if defined(CONFIG_IDE_SWAP_IO)
> __weak void ide_input_data(int dev, ulong *sect_buf, int words)
> {
> +#if defined(CONFIG_IDE_AHB)
> + ide_read_data(dev, sect_buf, words);
> +#else
> + uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
> ushort *dbuf;
> - volatile ushort *pbuf;
>
> - pbuf = (ushort *)(ATA_CURR_BASE(dev) + ATA_DATA_REG);
> dbuf = (ushort *)sect_buf;
>
> - debug("in input data base for read is %lx\n", (unsigned long) pbuf);
> + debug("in input data base for read is %p\n", (void *)paddr);
>
> while (words--) {
> EIEIO;
> - *dbuf++ = *pbuf;
> + *dbuf++ = le16_to_cpu(inw(paddr));
> EIEIO;
> - *dbuf++ = *pbuf;
> + *dbuf++ = le16_to_cpu(inw(paddr));
> }
> +#endif /* CONFIG_IDE_AHB */
> }
> -#else /* ! CONFIG_IDE_SWAP_IO */
> -__weak void ide_input_data(int dev, ulong *sect_buf, int words)
> -{
> -#if defined(CONFIG_IDE_AHB)
> - ide_read_data(dev, sect_buf, words);
> -#else
> - insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
> -#endif
> -}
> -
> -#endif /* CONFIG_IDE_SWAP_IO */
>
> #ifdef CONFIG_BLK
> ulong ide_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
> @@ -1019,14 +953,14 @@ ulong ide_read(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
> if (lba48) {
> ide_outb(device, ATA_DEV_HD,
> ATA_LBA | ATA_DEVICE(device));
> - ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
> + ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ_EXT);
>
> } else
> #endif
> {
> ide_outb(device, ATA_DEV_HD, ATA_LBA |
> ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
> - ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
> + ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ);
> }
>
> udelay(50);
> @@ -1116,14 +1050,14 @@ ulong ide_write(struct blk_desc *block_dev, lbaint_t blknr, lbaint_t blkcnt,
> if (lba48) {
> ide_outb(device, ATA_DEV_HD,
> ATA_LBA | ATA_DEVICE(device));
> - ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
> + ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE_EXT);
>
> } else
> #endif
> {
> ide_outb(device, ATA_DEV_HD, ATA_LBA |
> ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
> - ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
> + ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE);
> }
>
> udelay(50);
> diff --git a/include/ata.h b/include/ata.h
> index 3d870c973f..32ad5f6427 100644
> --- a/include/ata.h
> +++ b/include/ata.h
> @@ -134,7 +134,7 @@ typedef struct hd_driveid {
> unsigned short cur_capacity1; /* (2 words, misaligned int) */
> unsigned char multsect; /* current multiple sector count */
> unsigned char multsect_valid; /* when (bit0==1) multsect is ok */
> - unsigned int lba_capacity; /* total number of sectors */
> + unsigned short lba_capacity[2];/* two words containing total number of sectors */
> unsigned short dma_1word; /* single-word dma info */
> unsigned short dma_mword; /* multiple-word dma info */
> unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */
>
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