Re: [PATCH 01/16] ata: ahci: use abstract read/write functions uniformly

[Sascha Hauer <s.hauer@pengutronix.de>]

On Wed, May 04, 2022 at 12:25:38PM +0300, Denis Orlov wrote:
> Currently those are used in some routines side by side with underlying
> functions with no apparent reason for it. Make their usage uniform, this
> cleans up code a bit and allows to remove unneeded variables.
> 
> Signed-off-by: Denis Orlov <denorl2009@gmail.com>
> ---
>  drivers/ata/ahci.c | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)

Applied all, thanks

Sascha

> 
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index 3c0b0a5450..ad9e2f950f 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -172,7 +172,7 @@ static int ahci_io(struct ahci_port *ahci_port, u8 *fis, int fis_len, void *rbuf
>  	ahci_port_write_f(ahci_port, PORT_CMD_ISSUE, 1);
>  
>  	ret = wait_on_timeout(WAIT_DATAIO,
> -			(readl(ahci_port->port_mmio + PORT_CMD_ISSUE) & 0x1) == 0);
> +			(ahci_port_read(ahci_port, PORT_CMD_ISSUE) & 0x1) == 0);
>  	if (ret)
>  		return -ETIMEDOUT;
>  
> @@ -274,12 +274,9 @@ static int ahci_write(struct ata_port *ata, const void *buf, sector_t block,
>  
>  static int ahci_init_port(struct ahci_port *ahci_port)
>  {
> -	void __iomem *port_mmio;
>  	u32 val, cmd;
>  	int ret;
>  
> -	port_mmio = ahci_port->port_mmio;
> -
>  	/* make sure port is not active */
>  	val = ahci_port_read(ahci_port, PORT_CMD);
>  	if (val & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | PORT_CMD_FIS_RX | PORT_CMD_START)) {
> @@ -375,16 +372,16 @@ static int ahci_init_port(struct ahci_port *ahci_port)
>  	ahci_port_info(ahci_port, "Spinning up device...\n");
>  
>  	ret = wait_on_timeout(WAIT_SPINUP,
> -			((readl(port_mmio + PORT_TFDATA) &
> +			((ahci_port_read(ahci_port, PORT_TFDATA) &
>  			 (ATA_STATUS_BUSY | ATA_STATUS_DRQ)) == 0)
> -			|| ((readl(port_mmio + PORT_SCR_STAT) & 0xf) == 1));
> +			|| ((ahci_port_read(ahci_port, PORT_SCR_STAT) & 0xf) == 1));
>  	if (ret) {
>  		ahci_port_info(ahci_port, "timeout.\n");
>  		ret = -ENODEV;
>  		goto err_init;
>  	}
>  
> -	if ((readl(port_mmio + PORT_SCR_STAT) & 0xf) == 1) {
> +	if ((ahci_port_read(ahci_port, PORT_SCR_STAT) & 0xf) == 1) {
>  		ahci_port_info(ahci_port, "down.\n");
>  		ret = -ENODEV;
>  		goto err_init;
> @@ -570,7 +567,6 @@ static int ahci_detect(struct device_d *dev)
>  
>  int ahci_add_host(struct ahci_device *ahci)
>  {
> -	u8 *mmio = (u8 *)ahci->mmio_base;
>  	u32 tmp, cap_save;
>  	int i, ret;
>  
> @@ -584,7 +580,7 @@ int ahci_add_host(struct ahci_device *ahci)
>  
>  	ahci_debug(ahci, "ahci_host_init: start\n");
>  
> -	cap_save = readl(mmio + HOST_CAP);
> +	cap_save = ahci_ioread(ahci, HOST_CAP);
>  	cap_save &= ((1 << 28) | (1 << 17));
>  	cap_save |= (1 << 27);  /* Staggered Spin-up. Not needed. */
>  
> @@ -597,7 +593,7 @@ int ahci_add_host(struct ahci_device *ahci)
>  	 * reset must complete within 1 second, or
>  	 * the hardware should be considered fried.
>  	 */
> -	ret = wait_on_timeout(SECOND, (readl(mmio + HOST_CTL) & HOST_RESET) == 0);
> +	ret = wait_on_timeout(SECOND, (ahci_ioread(ahci, HOST_CTL) & HOST_RESET) == 0);
>  	if (ret) {
>  		ahci_debug(ahci,"controller reset failed (0x%x)\n", tmp);
>  		return -ENODEV;
> @@ -620,7 +616,7 @@ int ahci_add_host(struct ahci_device *ahci)
>  		ahci_port->num = i;
>  		ahci_port->ahci = ahci;
>  		ahci_port->ata.dev = ahci->dev;
> -		ahci_port->port_mmio = ahci_port_base(mmio, i);
> +		ahci_port->port_mmio = ahci_port_base(ahci->mmio_base, i);
>  		ahci_port->ata.ops = &ahci_ops;
>  		ata_port_register(&ahci_port->ata);
>  	}
> -- 
> 2.20.1
> 
> 

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