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Date: Wed, 8 Feb 2017 18:17:32 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Jan Kiszka <jan.kiszka@...mens.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
Subject: Re: [PATCH v2 4/7] serial: exar: Move Commtech adapters to 8250_exar
as well
On Wed, Feb 8, 2017 at 6:09 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
> Those are Exar-based, too.
>
> With the required refactoring of the code to fit into 8250_exar, we
> automatically fix the same issue pci_xr17v35x_setup had before: 8XMODE,
> FCTL, TXTRG and RXTRG were always only set for port 0. Now they are
> initialized for the correct target port by using port.membase.
>
> Now we can also cleanly fix the blacklist of 8250_pci so that all
> Commtech devices are rejected and 8250_exar can handle them.
>
FWIW:
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
> ---
> drivers/tty/serial/8250/8250_exar.c | 83 +++++++++++++++++++--
> drivers/tty/serial/8250/8250_pci.c | 139 +-----------------------------------
> 2 files changed, 79 insertions(+), 143 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
> index f489f25..9af4266 100644
> --- a/drivers/tty/serial/8250/8250_exar.c
> +++ b/drivers/tty/serial/8250/8250_exar.c
> @@ -24,11 +24,15 @@
>
> #include "8250.h"
>
> -#define PCI_DEVICE_ID_COMMTECH_4224PCIE 0x0020
> -#define PCI_DEVICE_ID_COMMTECH_4228PCIE 0x0021
> -#define PCI_DEVICE_ID_COMMTECH_4222PCIE 0x0022
> -#define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
> -#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
> +#define PCI_DEVICE_ID_COMMTECH_4224PCI335 0x0002
> +#define PCI_DEVICE_ID_COMMTECH_4222PCI335 0x0004
> +#define PCI_DEVICE_ID_COMMTECH_2324PCI335 0x000a
> +#define PCI_DEVICE_ID_COMMTECH_2328PCI335 0x000b
> +#define PCI_DEVICE_ID_COMMTECH_4224PCIE 0x0020
> +#define PCI_DEVICE_ID_COMMTECH_4228PCIE 0x0021
> +#define PCI_DEVICE_ID_COMMTECH_4222PCIE 0x0022
> +#define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
> +#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
>
> #define UART_EXAR_MPIOINT_7_0 0x8f /* MPIOINT[7:0] */
> #define UART_EXAR_MPIOLVL_7_0 0x90 /* MPIOLVL[7:0] */
> @@ -84,6 +88,55 @@ static int default_setup(struct exar8250 *priv, struct pci_dev *pcidev,
> }
>
> static int
> +pci_fastcom335_setup(struct exar8250 *priv, struct pci_dev *pcidev,
> + struct uart_8250_port *port, int idx)
> +{
> + unsigned int offset = idx * 0x200;
> + unsigned int baud = 1843200;
> + u8 __iomem *p;
> + int err;
> +
> + port->port.flags |= UPF_EXAR_EFR;
> + port->port.uartclk = baud * 16;
> +
> + err = default_setup(priv, pcidev, idx, offset, port);
> + if (err)
> + return err;
> +
> + p = port->port.membase;
> +
> + writeb(0x00, p + UART_EXAR_8XMODE);
> + writeb(UART_FCTR_EXAR_TRGD, p + UART_EXAR_FCTR);
> + writeb(32, p + UART_EXAR_TXTRG);
> + writeb(32, p + UART_EXAR_RXTRG);
> +
> + /*
> + * Setup Multipurpose Input/Output pins.
> + */
> + if (idx == 0) {
> + switch (pcidev->device) {
> + case PCI_DEVICE_ID_COMMTECH_4222PCI335:
> + case PCI_DEVICE_ID_COMMTECH_4224PCI335:
> + writeb(0x78, p + UART_EXAR_MPIOLVL_7_0);
> + writeb(0x00, p + UART_EXAR_MPIOINV_7_0);
> + writeb(0x00, p + UART_EXAR_MPIOSEL_7_0);
> + break;
> + case PCI_DEVICE_ID_COMMTECH_2324PCI335:
> + case PCI_DEVICE_ID_COMMTECH_2328PCI335:
> + writeb(0x00, p + UART_EXAR_MPIOLVL_7_0);
> + writeb(0xc0, p + UART_EXAR_MPIOINV_7_0);
> + writeb(0xc0, p + UART_EXAR_MPIOSEL_7_0);
> + break;
> + }
> + writeb(0x00, p + UART_EXAR_MPIOINT_7_0);
> + writeb(0x00, p + UART_EXAR_MPIO3T_7_0);
> + writeb(0x00, p + UART_EXAR_MPIOOD_7_0);
> + }
> +
> + return 0;
> +}
> +
> +static int
> pci_connect_tech_setup(struct exar8250 *priv, struct pci_dev *pcidev,
> struct uart_8250_port *port, int idx)
> {
> @@ -291,6 +344,21 @@ static int __maybe_unused exar_resume(struct device *dev)
>
> static SIMPLE_DEV_PM_OPS(exar_pci_pm, exar_suspend, exar_resume);
>
> +static const struct exar8250_board pbn_fastcom335_2 = {
> + .num_ports = 2,
> + .setup = pci_fastcom335_setup,
> +};
> +
> +static const struct exar8250_board pbn_fastcom335_4 = {
> + .num_ports = 4,
> + .setup = pci_fastcom335_setup,
> +};
> +
> +static const struct exar8250_board pbn_fastcom335_8 = {
> + .num_ports = 8,
> + .setup = pci_fastcom335_setup,
> +};
> +
> static const struct exar8250_board pbn_connect = {
> .setup = pci_connect_tech_setup,
> };
> @@ -375,6 +443,11 @@ static struct pci_device_id exar_pci_tbl[] = {
> EXAR_DEVICE(COMMTECH, COMMTECH_4222PCIE, pbn_exar_XR17V35x),
> EXAR_DEVICE(COMMTECH, COMMTECH_4224PCIE, pbn_exar_XR17V35x),
> EXAR_DEVICE(COMMTECH, COMMTECH_4228PCIE, pbn_exar_XR17V35x),
> +
> + EXAR_DEVICE(COMMTECH, COMMTECH_4222PCI335, pbn_fastcom335_2),
> + EXAR_DEVICE(COMMTECH, COMMTECH_4224PCI335, pbn_fastcom335_4),
> + EXAR_DEVICE(COMMTECH, COMMTECH_2324PCI335, pbn_fastcom335_4),
> + EXAR_DEVICE(COMMTECH, COMMTECH_2328PCI335, pbn_fastcom335_8),
> { 0, }
> };
> MODULE_DEVICE_TABLE(pci, exar_pci_tbl);
> diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
> index 0b63109..56768f5 100644
> --- a/drivers/tty/serial/8250/8250_pci.c
> +++ b/drivers/tty/serial/8250/8250_pci.c
> @@ -1610,67 +1610,6 @@ static int pci_eg20t_init(struct pci_dev *dev)
> #endif
> }
>
> -#define UART_EXAR_MPIOINT_7_0 0x8f /* MPIOINT[7:0] */
> -#define UART_EXAR_MPIOLVL_7_0 0x90 /* MPIOLVL[7:0] */
> -#define UART_EXAR_MPIO3T_7_0 0x91 /* MPIO3T[7:0] */
> -#define UART_EXAR_MPIOINV_7_0 0x92 /* MPIOINV[7:0] */
> -#define UART_EXAR_MPIOSEL_7_0 0x93 /* MPIOSEL[7:0] */
> -#define UART_EXAR_MPIOOD_7_0 0x94 /* MPIOOD[7:0] */
> -#define UART_EXAR_MPIOINT_15_8 0x95 /* MPIOINT[15:8] */
> -#define UART_EXAR_MPIOLVL_15_8 0x96 /* MPIOLVL[15:8] */
> -#define UART_EXAR_MPIO3T_15_8 0x97 /* MPIO3T[15:8] */
> -#define UART_EXAR_MPIOINV_15_8 0x98 /* MPIOINV[15:8] */
> -#define UART_EXAR_MPIOSEL_15_8 0x99 /* MPIOSEL[15:8] */
> -#define UART_EXAR_MPIOOD_15_8 0x9a /* MPIOOD[15:8] */
> -#define PCI_DEVICE_ID_COMMTECH_4222PCI335 0x0004
> -#define PCI_DEVICE_ID_COMMTECH_4224PCI335 0x0002
> -#define PCI_DEVICE_ID_COMMTECH_2324PCI335 0x000a
> -#define PCI_DEVICE_ID_COMMTECH_2328PCI335 0x000b
> -
> -static int
> -pci_fastcom335_setup(struct serial_private *priv,
> - const struct pciserial_board *board,
> - struct uart_8250_port *port, int idx)
> -{
> - u8 __iomem *p;
> -
> - p = pci_ioremap_bar(priv->dev, 0);
> - if (p == NULL)
> - return -ENOMEM;
> -
> - port->port.flags |= UPF_EXAR_EFR;
> -
> - /*
> - * Setup Multipurpose Input/Output pins.
> - */
> - if (idx == 0) {
> - switch (priv->dev->device) {
> - case PCI_DEVICE_ID_COMMTECH_4222PCI335:
> - case PCI_DEVICE_ID_COMMTECH_4224PCI335:
> - writeb(0x78, p + UART_EXAR_MPIOLVL_7_0);
> - writeb(0x00, p + UART_EXAR_MPIOINV_7_0);
> - writeb(0x00, p + UART_EXAR_MPIOSEL_7_0);
> - break;
> - case PCI_DEVICE_ID_COMMTECH_2324PCI335:
> - case PCI_DEVICE_ID_COMMTECH_2328PCI335:
> - writeb(0x00, p + UART_EXAR_MPIOLVL_7_0);
> - writeb(0xc0, p + UART_EXAR_MPIOINV_7_0);
> - writeb(0xc0, p + UART_EXAR_MPIOSEL_7_0);
> - break;
> - }
> - writeb(0x00, p + UART_EXAR_MPIOINT_7_0);
> - writeb(0x00, p + UART_EXAR_MPIO3T_7_0);
> - writeb(0x00, p + UART_EXAR_MPIOOD_7_0);
> - }
> - writeb(0x00, p + UART_EXAR_8XMODE);
> - writeb(UART_FCTR_EXAR_TRGD, p + UART_EXAR_FCTR);
> - writeb(32, p + UART_EXAR_TXTRG);
> - writeb(32, p + UART_EXAR_RXTRG);
> - iounmap(p);
> -
> - return pci_default_setup(priv, board, port, idx);
> -}
> -
> static int
> pci_wch_ch353_setup(struct serial_private *priv,
> const struct pciserial_board *board,
> @@ -2431,38 +2370,6 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
> .setup = pci_asix_setup,
> },
> /*
> - * Commtech, Inc. Fastcom adapters
> - *
> - */
> - {
> - .vendor = PCI_VENDOR_ID_COMMTECH,
> - .device = PCI_DEVICE_ID_COMMTECH_4222PCI335,
> - .subvendor = PCI_ANY_ID,
> - .subdevice = PCI_ANY_ID,
> - .setup = pci_fastcom335_setup,
> - },
> - {
> - .vendor = PCI_VENDOR_ID_COMMTECH,
> - .device = PCI_DEVICE_ID_COMMTECH_4224PCI335,
> - .subvendor = PCI_ANY_ID,
> - .subdevice = PCI_ANY_ID,
> - .setup = pci_fastcom335_setup,
> - },
> - {
> - .vendor = PCI_VENDOR_ID_COMMTECH,
> - .device = PCI_DEVICE_ID_COMMTECH_2324PCI335,
> - .subvendor = PCI_ANY_ID,
> - .subdevice = PCI_ANY_ID,
> - .setup = pci_fastcom335_setup,
> - },
> - {
> - .vendor = PCI_VENDOR_ID_COMMTECH,
> - .device = PCI_DEVICE_ID_COMMTECH_2328PCI335,
> - .subvendor = PCI_ANY_ID,
> - .subdevice = PCI_ANY_ID,
> - .setup = pci_fastcom335_setup,
> - },
> - /*
> * Broadcom TruManage (NetXtreme)
> */
> {
> @@ -2573,10 +2480,6 @@ enum pci_board_num_t {
>
> pbn_b0_4_1152000,
>
> - pbn_b0_2_1152000_200,
> - pbn_b0_4_1152000_200,
> - pbn_b0_8_1152000_200,
> -
> pbn_b0_4_1250000,
>
> pbn_b0_2_1843200,
> @@ -2780,27 +2683,6 @@ static struct pciserial_board pci_boards[] = {
> .uart_offset = 8,
> },
>
> - [pbn_b0_2_1152000_200] = {
> - .flags = FL_BASE0,
> - .num_ports = 2,
> - .base_baud = 1152000,
> - .uart_offset = 0x200,
> - },
> -
> - [pbn_b0_4_1152000_200] = {
> - .flags = FL_BASE0,
> - .num_ports = 4,
> - .base_baud = 1152000,
> - .uart_offset = 0x200,
> - },
> -
> - [pbn_b0_8_1152000_200] = {
> - .flags = FL_BASE0,
> - .num_ports = 8,
> - .base_baud = 1152000,
> - .uart_offset = 0x200,
> - },
> -
> [pbn_b0_4_1250000] = {
> .flags = FL_BASE0,
> .num_ports = 4,
> @@ -3521,6 +3403,7 @@ static const struct pci_device_id blacklist[] = {
>
> /* Exar devices */
> { PCI_VDEVICE(EXAR, PCI_ANY_ID), },
> + { PCI_VDEVICE(COMMTECH, PCI_ANY_ID), },
> };
>
> /*
> @@ -5248,26 +5131,6 @@ static struct pci_device_id serial_pci_tbl[] = {
> PCI_ANY_ID, PCI_ANY_ID,
> 0, 0, pbn_wch384_4 },
>
> - /*
> - * Commtech, Inc. Fastcom adapters
> - */
> - { PCI_VENDOR_ID_COMMTECH, PCI_DEVICE_ID_COMMTECH_4222PCI335,
> - PCI_ANY_ID, PCI_ANY_ID,
> - 0,
> - 0, pbn_b0_2_1152000_200 },
> - { PCI_VENDOR_ID_COMMTECH, PCI_DEVICE_ID_COMMTECH_4224PCI335,
> - PCI_ANY_ID, PCI_ANY_ID,
> - 0,
> - 0, pbn_b0_4_1152000_200 },
> - { PCI_VENDOR_ID_COMMTECH, PCI_DEVICE_ID_COMMTECH_2324PCI335,
> - PCI_ANY_ID, PCI_ANY_ID,
> - 0,
> - 0, pbn_b0_4_1152000_200 },
> - { PCI_VENDOR_ID_COMMTECH, PCI_DEVICE_ID_COMMTECH_2328PCI335,
> - PCI_ANY_ID, PCI_ANY_ID,
> - 0,
> - 0, pbn_b0_8_1152000_200 },
> -
> /* Fintek PCI serial cards */
> { PCI_DEVICE(0x1c29, 0x1104), .driver_data = pbn_fintek_4 },
> { PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 },
> --
> 2.1.4
>
--
With Best Regards,
Andy Shevchenko
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