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From:   Arnd Bergmann <arnd@kernel.org>
To:     Kalle Valo <kvalo@kernel.org>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        "David S . Miller" <davem@davemloft.net>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Claudiu Beznea <claudiu.beznea@tuxon.dev>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Geoff Levand <geoff@infradead.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jakub Kicinski <kuba@kernel.org>,
        Jeff Johnson <quic_jjohnson@quicinc.com>,
        Johannes Berg <johannes@sipsolutions.net>,
        Larry Finger <Larry.Finger@lwfinger.net>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        Pavel Machek <pavel@ucw.cz>, Stanislaw Gruszka <stf_xl@wp.pl>,
        Gregory Greenman <gregory.greenman@intel.com>,
        linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-staging@lists.linux.dev, linux-wireless@vger.kernel.org
Subject: [PATCH 01/10] wifi: libertas: drop 16-bit PCMCIA support
Date:   Mon, 23 Oct 2023 15:19:43 +0200
Message-Id: <20231023131953.2876682-2-arnd@kernel.org>
In-Reply-To: <20231023131953.2876682-1-arnd@kernel.org>
References: <20231023131953.2876682-1-arnd@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Arnd Bergmann <arnd@arndb.de>

With all the other PCMCIA WLAN adapters gone from the kernel, this is now
the last remaining device with this interface, but as far as I can tell,
all the actual libertas users were actually using either SDIO or USB.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/wireless/marvell/libertas/Kconfig |   7 +-
 .../net/wireless/marvell/libertas/Makefile    |   1 -
 drivers/net/wireless/marvell/libertas/if_cs.c | 957 ------------------
 3 files changed, 1 insertion(+), 964 deletions(-)
 delete mode 100644 drivers/net/wireless/marvell/libertas/if_cs.c

diff --git a/drivers/net/wireless/marvell/libertas/Kconfig b/drivers/net/wireless/marvell/libertas/Kconfig
index 6d62ab49aa8d4..5bc92cb6b0fed 100644
--- a/drivers/net/wireless/marvell/libertas/Kconfig
+++ b/drivers/net/wireless/marvell/libertas/Kconfig
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config LIBERTAS
 	tristate "Marvell 8xxx Libertas WLAN driver support"
+	depends on USB || SDIO || SPI
 	depends on CFG80211
 	select WIRELESS_EXT
 	select WEXT_SPY
@@ -15,12 +16,6 @@ config LIBERTAS_USB
 	help
 	  A driver for Marvell Libertas 8388 USB devices.
 
-config LIBERTAS_CS
-	tristate "Marvell Libertas 8385 CompactFlash 802.11b/g cards"
-	depends on LIBERTAS && PCMCIA && HAS_IOPORT_MAP
-	help
-	  A driver for Marvell Libertas 8385 CompactFlash devices.
-
 config LIBERTAS_SDIO
 	tristate "Marvell Libertas 8385/8686/8688 SDIO 802.11b/g cards"
 	depends on LIBERTAS && MMC
diff --git a/drivers/net/wireless/marvell/libertas/Makefile b/drivers/net/wireless/marvell/libertas/Makefile
index 41b9b440a5422..2ac04f4d61a52 100644
--- a/drivers/net/wireless/marvell/libertas/Makefile
+++ b/drivers/net/wireless/marvell/libertas/Makefile
@@ -17,6 +17,5 @@ libertas_spi-objs += if_spi.o
 
 obj-$(CONFIG_LIBERTAS)     += libertas.o
 obj-$(CONFIG_LIBERTAS_USB) += usb8xxx.o
-obj-$(CONFIG_LIBERTAS_CS)  += libertas_cs.o
 obj-$(CONFIG_LIBERTAS_SDIO) += libertas_sdio.o
 obj-$(CONFIG_LIBERTAS_SPI) += libertas_spi.o
diff --git a/drivers/net/wireless/marvell/libertas/if_cs.c b/drivers/net/wireless/marvell/libertas/if_cs.c
deleted file mode 100644
index 4103f15bca6bf..0000000000000
--- a/drivers/net/wireless/marvell/libertas/if_cs.c
+++ /dev/null
@@ -1,957 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-
-  Driver for the Marvell 8385 based compact flash WLAN cards.
-
-  (C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de>
-
-
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/moduleparam.h>
-#include <linux/firmware.h>
-#include <linux/netdevice.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-
-#include <linux/io.h>
-
-#define DRV_NAME "libertas_cs"
-
-#include "decl.h"
-#include "defs.h"
-#include "dev.h"
-
-
-/********************************************************************/
-/* Module stuff                                                     */
-/********************************************************************/
-
-MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>");
-MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards");
-MODULE_LICENSE("GPL");
-
-
-
-/********************************************************************/
-/* Data structures                                                  */
-/********************************************************************/
-
-struct if_cs_card {
-	struct pcmcia_device *p_dev;
-	struct lbs_private *priv;
-	void __iomem *iobase;
-	bool align_regs;
-	u32 model;
-};
-
-
-enum {
-	MODEL_UNKNOWN = 0x00,
-	MODEL_8305 = 0x01,
-	MODEL_8381 = 0x02,
-	MODEL_8385 = 0x03
-};
-
-static const struct lbs_fw_table fw_table[] = {
-	{ MODEL_8305, "libertas/cf8305.bin", NULL },
-	{ MODEL_8305, "libertas_cs_helper.fw", NULL },
-	{ MODEL_8381, "libertas/cf8381_helper.bin", "libertas/cf8381.bin" },
-	{ MODEL_8381, "libertas_cs_helper.fw", "libertas_cs.fw" },
-	{ MODEL_8385, "libertas/cf8385_helper.bin", "libertas/cf8385.bin" },
-	{ MODEL_8385, "libertas_cs_helper.fw", "libertas_cs.fw" },
-	{ 0, NULL, NULL }
-};
-MODULE_FIRMWARE("libertas/cf8305.bin");
-MODULE_FIRMWARE("libertas/cf8381_helper.bin");
-MODULE_FIRMWARE("libertas/cf8381.bin");
-MODULE_FIRMWARE("libertas/cf8385_helper.bin");
-MODULE_FIRMWARE("libertas/cf8385.bin");
-MODULE_FIRMWARE("libertas_cs_helper.fw");
-MODULE_FIRMWARE("libertas_cs.fw");
-
-
-/********************************************************************/
-/* Hardware access                                                  */
-/********************************************************************/
-
-/* This define enables wrapper functions which allow you
-   to dump all register accesses. You normally won't this,
-   except for development */
-/* #define DEBUG_IO */
-
-#ifdef DEBUG_IO
-static int debug_output = 0;
-#else
-/* This way the compiler optimizes the printk's away */
-#define debug_output 0
-#endif
-
-static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg)
-{
-	unsigned int val = ioread8(card->iobase + reg);
-	if (debug_output)
-		printk(KERN_INFO "inb %08x<%02x\n", reg, val);
-	return val;
-}
-static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg)
-{
-	unsigned int val = ioread16(card->iobase + reg);
-	if (debug_output)
-		printk(KERN_INFO "inw %08x<%04x\n", reg, val);
-	return val;
-}
-static inline void if_cs_read16_rep(
-	struct if_cs_card *card,
-	uint reg,
-	void *buf,
-	unsigned long count)
-{
-	if (debug_output)
-		printk(KERN_INFO "insw %08x<(0x%lx words)\n",
-			reg, count);
-	ioread16_rep(card->iobase + reg, buf, count);
-}
-
-static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val)
-{
-	if (debug_output)
-		printk(KERN_INFO "outb %08x>%02x\n", reg, val);
-	iowrite8(val, card->iobase + reg);
-}
-
-static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val)
-{
-	if (debug_output)
-		printk(KERN_INFO "outw %08x>%04x\n", reg, val);
-	iowrite16(val, card->iobase + reg);
-}
-
-static inline void if_cs_write16_rep(
-	struct if_cs_card *card,
-	uint reg,
-	const void *buf,
-	unsigned long count)
-{
-	if (debug_output)
-		printk(KERN_INFO "outsw %08x>(0x%lx words)\n",
-			reg, count);
-	iowrite16_rep(card->iobase + reg, buf, count);
-}
-
-
-/*
- * I know that polling/delaying is frowned upon. However, this procedure
- * with polling is needed while downloading the firmware. At this stage,
- * the hardware does unfortunately not create any interrupts.
- *
- * Fortunately, this function is never used once the firmware is in
- * the card. :-)
- *
- * As a reference, see the "Firmware Specification v5.1", page 18
- * and 19. I did not follow their suggested timing to the word,
- * but this works nice & fast anyway.
- */
-static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg)
-{
-	int i;
-
-	for (i = 0; i < 100000; i++) {
-		u8 val = if_cs_read8(card, addr);
-		if (val == reg)
-			return 0;
-		udelay(5);
-	}
-	return -ETIME;
-}
-
-
-
-/*
- * First the bitmasks for the host/card interrupt/status registers:
- */
-#define IF_CS_BIT_TX			0x0001
-#define IF_CS_BIT_RX			0x0002
-#define IF_CS_BIT_COMMAND		0x0004
-#define IF_CS_BIT_RESP			0x0008
-#define IF_CS_BIT_EVENT			0x0010
-#define	IF_CS_BIT_MASK			0x001f
-
-
-
-/*
- * It's not really clear to me what the host status register is for. It
- * needs to be set almost in union with "host int cause". The following
- * bits from above are used:
- *
- *   IF_CS_BIT_TX         driver downloaded a data packet
- *   IF_CS_BIT_RX         driver got a data packet
- *   IF_CS_BIT_COMMAND    driver downloaded a command
- *   IF_CS_BIT_RESP       not used (has some meaning with powerdown)
- *   IF_CS_BIT_EVENT      driver read a host event
- */
-#define IF_CS_HOST_STATUS		0x00000000
-
-/*
- * With the host int cause register can the host (that is, Linux) cause
- * an interrupt in the firmware, to tell the firmware about those events:
- *
- *   IF_CS_BIT_TX         a data packet has been downloaded
- *   IF_CS_BIT_RX         a received data packet has retrieved
- *   IF_CS_BIT_COMMAND    a firmware block or a command has been downloaded
- *   IF_CS_BIT_RESP       not used (has some meaning with powerdown)
- *   IF_CS_BIT_EVENT      a host event (link lost etc) has been retrieved
- */
-#define IF_CS_HOST_INT_CAUSE		0x00000002
-
-/*
- * The host int mask register is used to enable/disable interrupt.  However,
- * I have the suspicion that disabled interrupts are lost.
- */
-#define IF_CS_HOST_INT_MASK		0x00000004
-
-/*
- * Used to send or receive data packets:
- */
-#define IF_CS_WRITE			0x00000016
-#define IF_CS_WRITE_LEN			0x00000014
-#define IF_CS_READ			0x00000010
-#define IF_CS_READ_LEN			0x00000024
-
-/*
- * Used to send commands (and to send firmware block) and to
- * receive command responses:
- */
-#define IF_CS_CMD			0x0000001A
-#define IF_CS_CMD_LEN			0x00000018
-#define IF_CS_RESP			0x00000012
-#define IF_CS_RESP_LEN			0x00000030
-
-/*
- * The card status registers shows what the card/firmware actually
- * accepts:
- *
- *   IF_CS_BIT_TX        you may send a data packet
- *   IF_CS_BIT_RX        you may retrieve a data packet
- *   IF_CS_BIT_COMMAND   you may send a command
- *   IF_CS_BIT_RESP      you may retrieve a command response
- *   IF_CS_BIT_EVENT     the card has a event for use (link lost, snr low etc)
- *
- * When reading this register several times, you will get back the same
- * results --- with one exception: the IF_CS_BIT_EVENT clear itself
- * automatically.
- *
- * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because
- * we handle this via the card int cause register.
- */
-#define IF_CS_CARD_STATUS		0x00000020
-#define IF_CS_CARD_STATUS_MASK		0x7f00
-
-/*
- * The card int cause register is used by the card/firmware to notify us
- * about the following events:
- *
- *   IF_CS_BIT_TX        a data packet has successfully been sentx
- *   IF_CS_BIT_RX        a data packet has been received and can be retrieved
- *   IF_CS_BIT_COMMAND   not used
- *   IF_CS_BIT_RESP      the firmware has a command response for us
- *   IF_CS_BIT_EVENT     the card has a event for use (link lost, snr low etc)
- */
-#define IF_CS_CARD_INT_CAUSE		0x00000022
-
-/*
- * This is used to for handshaking with the card's bootloader/helper image
- * to synchronize downloading of firmware blocks.
- */
-#define IF_CS_SQ_READ_LOW		0x00000028
-#define IF_CS_SQ_HELPER_OK		0x10
-
-/*
- * The scratch register tells us ...
- *
- * IF_CS_SCRATCH_BOOT_OK     the bootloader runs
- * IF_CS_SCRATCH_HELPER_OK   the helper firmware already runs
- */
-#define IF_CS_SCRATCH			0x0000003F
-#define IF_CS_SCRATCH_BOOT_OK		0x00
-#define IF_CS_SCRATCH_HELPER_OK		0x5a
-
-/*
- * Used to detect ancient chips:
- */
-#define IF_CS_PRODUCT_ID		0x0000001C
-#define IF_CS_CF8385_B1_REV		0x12
-#define IF_CS_CF8381_B3_REV		0x04
-#define IF_CS_CF8305_B1_REV		0x03
-
-/*
- * Used to detect other cards than CF8385 since their revisions of silicon
- * doesn't match those from CF8385, eg. CF8381 B3 works with this driver.
- */
-#define CF8305_MANFID		0x02db
-#define CF8305_CARDID		0x8103
-#define CF8381_MANFID		0x02db
-#define CF8381_CARDID		0x6064
-#define CF8385_MANFID		0x02df
-#define CF8385_CARDID		0x8103
-
-/*
- * FIXME: just use the 'driver_info' field of 'struct pcmcia_device_id' when
- * that gets fixed.  Currently there's no way to access it from the probe hook.
- */
-static inline u32 get_model(u16 manf_id, u16 card_id)
-{
-	/* NOTE: keep in sync with if_cs_ids */
-	if (manf_id == CF8305_MANFID && card_id == CF8305_CARDID)
-		return MODEL_8305;
-	else if (manf_id == CF8381_MANFID && card_id == CF8381_CARDID)
-		return MODEL_8381;
-	else if (manf_id == CF8385_MANFID && card_id == CF8385_CARDID)
-		return MODEL_8385;
-	return MODEL_UNKNOWN;
-}
-
-/********************************************************************/
-/* I/O and interrupt handling                                       */
-/********************************************************************/
-
-static inline void if_cs_enable_ints(struct if_cs_card *card)
-{
-	if_cs_write16(card, IF_CS_HOST_INT_MASK, 0);
-}
-
-static inline void if_cs_disable_ints(struct if_cs_card *card)
-{
-	if_cs_write16(card, IF_CS_HOST_INT_MASK, IF_CS_BIT_MASK);
-}
-
-/*
- * Called from if_cs_host_to_card to send a command to the hardware
- */
-static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb)
-{
-	struct if_cs_card *card = (struct if_cs_card *)priv->card;
-	int ret = -1;
-	int loops = 0;
-
-	if_cs_disable_ints(card);
-
-	/* Is hardware ready? */
-	while (1) {
-		u16 status = if_cs_read16(card, IF_CS_CARD_STATUS);
-		if (status & IF_CS_BIT_COMMAND)
-			break;
-		if (++loops > 100) {
-			netdev_err(priv->dev, "card not ready for commands\n");
-			goto done;
-		}
-		mdelay(1);
-	}
-
-	if_cs_write16(card, IF_CS_CMD_LEN, nb);
-
-	if_cs_write16_rep(card, IF_CS_CMD, buf, nb / 2);
-	/* Are we supposed to transfer an odd amount of bytes? */
-	if (nb & 1)
-		if_cs_write8(card, IF_CS_CMD, buf[nb-1]);
-
-	/* "Assert the download over interrupt command in the Host
-	 * status register" */
-	if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
-
-	/* "Assert the download over interrupt command in the Card
-	 * interrupt case register" */
-	if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
-	ret = 0;
-
-done:
-	if_cs_enable_ints(card);
-	return ret;
-}
-
-/*
- * Called from if_cs_host_to_card to send a data to the hardware
- */
-static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb)
-{
-	struct if_cs_card *card = (struct if_cs_card *)priv->card;
-	u16 status;
-
-	if_cs_disable_ints(card);
-
-	status = if_cs_read16(card, IF_CS_CARD_STATUS);
-	BUG_ON((status & IF_CS_BIT_TX) == 0);
-
-	if_cs_write16(card, IF_CS_WRITE_LEN, nb);
-
-	/* write even number of bytes, then odd byte if necessary */
-	if_cs_write16_rep(card, IF_CS_WRITE, buf, nb / 2);
-	if (nb & 1)
-		if_cs_write8(card, IF_CS_WRITE, buf[nb-1]);
-
-	if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_TX);
-	if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_TX);
-	if_cs_enable_ints(card);
-}
-
-/*
- * Get the command result out of the card.
- */
-static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
-{
-	unsigned long flags;
-	int ret = -1;
-	u16 status;
-
-	/* is hardware ready? */
-	status = if_cs_read16(priv->card, IF_CS_CARD_STATUS);
-	if ((status & IF_CS_BIT_RESP) == 0) {
-		netdev_err(priv->dev, "no cmd response in card\n");
-		*len = 0;
-		goto out;
-	}
-
-	*len = if_cs_read16(priv->card, IF_CS_RESP_LEN);
-	if ((*len == 0) || (*len > LBS_CMD_BUFFER_SIZE)) {
-		netdev_err(priv->dev,
-			   "card cmd buffer has invalid # of bytes (%d)\n",
-			   *len);
-		goto out;
-	}
-
-	/* read even number of bytes, then odd byte if necessary */
-	if_cs_read16_rep(priv->card, IF_CS_RESP, data, *len/sizeof(u16));
-	if (*len & 1)
-		data[*len-1] = if_cs_read8(priv->card, IF_CS_RESP);
-
-	/* This is a workaround for a firmware that reports too much
-	 * bytes */
-	*len -= 8;
-	ret = 0;
-
-	/* Clear this flag again */
-	spin_lock_irqsave(&priv->driver_lock, flags);
-	priv->dnld_sent = DNLD_RES_RECEIVED;
-	spin_unlock_irqrestore(&priv->driver_lock, flags);
-
-out:
-	return ret;
-}
-
-static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
-{
-	struct sk_buff *skb = NULL;
-	u16 len;
-	u8 *data;
-
-	len = if_cs_read16(priv->card, IF_CS_READ_LEN);
-	if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
-		netdev_err(priv->dev,
-			   "card data buffer has invalid # of bytes (%d)\n",
-			   len);
-		priv->dev->stats.rx_dropped++;
-		goto dat_err;
-	}
-
-	skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2);
-	if (!skb)
-		goto out;
-	skb_put(skb, len);
-	skb_reserve(skb, 2);/* 16 byte align */
-	data = skb->data;
-
-	/* read even number of bytes, then odd byte if necessary */
-	if_cs_read16_rep(priv->card, IF_CS_READ, data, len/sizeof(u16));
-	if (len & 1)
-		data[len-1] = if_cs_read8(priv->card, IF_CS_READ);
-
-dat_err:
-	if_cs_write16(priv->card, IF_CS_HOST_STATUS, IF_CS_BIT_RX);
-	if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_RX);
-
-out:
-	return skb;
-}
-
-static irqreturn_t if_cs_interrupt(int irq, void *data)
-{
-	struct if_cs_card *card = data;
-	struct lbs_private *priv = card->priv;
-	u16 cause;
-
-	/* Ask card interrupt cause register if there is something for us */
-	cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE);
-	lbs_deb_cs("cause 0x%04x\n", cause);
-
-	if (cause == 0) {
-		/* Not for us */
-		return IRQ_NONE;
-	}
-
-	if (cause == 0xffff) {
-		/* Read in junk, the card has probably been removed */
-		card->priv->surpriseremoved = 1;
-		return IRQ_HANDLED;
-	}
-
-	if (cause & IF_CS_BIT_RX) {
-		struct sk_buff *skb;
-		lbs_deb_cs("rx packet\n");
-		skb = if_cs_receive_data(priv);
-		if (skb)
-			lbs_process_rxed_packet(priv, skb);
-	}
-
-	if (cause & IF_CS_BIT_TX) {
-		lbs_deb_cs("tx done\n");
-		lbs_host_to_card_done(priv);
-	}
-
-	if (cause & IF_CS_BIT_RESP) {
-		unsigned long flags;
-		u8 i;
-
-		lbs_deb_cs("cmd resp\n");
-		spin_lock_irqsave(&priv->driver_lock, flags);
-		i = (priv->resp_idx == 0) ? 1 : 0;
-		spin_unlock_irqrestore(&priv->driver_lock, flags);
-
-		BUG_ON(priv->resp_len[i]);
-		if_cs_receive_cmdres(priv, priv->resp_buf[i],
-			&priv->resp_len[i]);
-
-		spin_lock_irqsave(&priv->driver_lock, flags);
-		lbs_notify_command_response(priv, i);
-		spin_unlock_irqrestore(&priv->driver_lock, flags);
-	}
-
-	if (cause & IF_CS_BIT_EVENT) {
-		u16 status = if_cs_read16(priv->card, IF_CS_CARD_STATUS);
-		if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE,
-			IF_CS_BIT_EVENT);
-		lbs_queue_event(priv, (status & IF_CS_CARD_STATUS_MASK) >> 8);
-	}
-
-	/* Clear interrupt cause */
-	if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK);
-
-	return IRQ_HANDLED;
-}
-
-
-
-
-/********************************************************************/
-/* Firmware                                                         */
-/********************************************************************/
-
-/*
- * Tries to program the helper firmware.
- *
- * Return 0 on success
- */
-static int if_cs_prog_helper(struct if_cs_card *card, const struct firmware *fw)
-{
-	int ret = 0;
-	int sent = 0;
-	u8  scratch;
-
-	/*
-	 * This is the only place where an unaligned register access happens on
-	 * the CF8305 card, therefore for the sake of speed of the driver, we do
-	 * the alignment correction here.
-	 */
-	if (card->align_regs)
-		scratch = if_cs_read16(card, IF_CS_SCRATCH) >> 8;
-	else
-		scratch = if_cs_read8(card, IF_CS_SCRATCH);
-
-	/* "If the value is 0x5a, the firmware is already
-	 * downloaded successfully"
-	 */
-	if (scratch == IF_CS_SCRATCH_HELPER_OK)
-		goto done;
-
-	/* "If the value is != 00, it is invalid value of register */
-	if (scratch != IF_CS_SCRATCH_BOOT_OK) {
-		ret = -ENODEV;
-		goto done;
-	}
-
-	lbs_deb_cs("helper size %td\n", fw->size);
-
-	/* "Set the 5 bytes of the helper image to 0" */
-	/* Not needed, this contains an ARM branch instruction */
-
-	for (;;) {
-		/* "the number of bytes to send is 256" */
-		int count = 256;
-		int remain = fw->size - sent;
-
-		if (remain < count)
-			count = remain;
-
-		/*
-		 * "write the number of bytes to be sent to the I/O Command
-		 * write length register"
-		 */
-		if_cs_write16(card, IF_CS_CMD_LEN, count);
-
-		/* "write this to I/O Command port register as 16 bit writes */
-		if (count)
-			if_cs_write16_rep(card, IF_CS_CMD,
-				&fw->data[sent],
-				count >> 1);
-
-		/*
-		 * "Assert the download over interrupt command in the Host
-		 * status register"
-		 */
-		if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
-
-		/*
-		 * "Assert the download over interrupt command in the Card
-		 * interrupt case register"
-		 */
-		if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
-
-		/*
-		 * "The host polls the Card Status register ... for 50 ms before
-		 * declaring a failure"
-		 */
-		ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
-			IF_CS_BIT_COMMAND);
-		if (ret < 0) {
-			pr_err("can't download helper at 0x%x, ret %d\n",
-			       sent, ret);
-			goto done;
-		}
-
-		if (count == 0)
-			break;
-
-		sent += count;
-	}
-
-done:
-	return ret;
-}
-
-
-static int if_cs_prog_real(struct if_cs_card *card, const struct firmware *fw)
-{
-	int ret = 0;
-	int retry = 0;
-	int len = 0;
-	int sent;
-
-	lbs_deb_cs("fw size %td\n", fw->size);
-
-	ret = if_cs_poll_while_fw_download(card, IF_CS_SQ_READ_LOW,
-		IF_CS_SQ_HELPER_OK);
-	if (ret < 0) {
-		pr_err("helper firmware doesn't answer\n");
-		goto done;
-	}
-
-	for (sent = 0; sent < fw->size; sent += len) {
-		len = if_cs_read16(card, IF_CS_SQ_READ_LOW);
-		if (len & 1) {
-			retry++;
-			pr_info("odd, need to retry this firmware block\n");
-		} else {
-			retry = 0;
-		}
-
-		if (retry > 20) {
-			pr_err("could not download firmware\n");
-			ret = -ENODEV;
-			goto done;
-		}
-		if (retry) {
-			sent -= len;
-		}
-
-
-		if_cs_write16(card, IF_CS_CMD_LEN, len);
-
-		if_cs_write16_rep(card, IF_CS_CMD,
-			&fw->data[sent],
-			(len+1) >> 1);
-		if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
-		if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
-
-		ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
-			IF_CS_BIT_COMMAND);
-		if (ret < 0) {
-			pr_err("can't download firmware at 0x%x\n", sent);
-			goto done;
-		}
-	}
-
-	ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a);
-	if (ret < 0)
-		pr_err("firmware download failed\n");
-
-done:
-	return ret;
-}
-
-static void if_cs_prog_firmware(struct lbs_private *priv, int ret,
-				 const struct firmware *helper,
-				 const struct firmware *mainfw)
-{
-	struct if_cs_card *card = priv->card;
-
-	if (ret) {
-		pr_err("failed to find firmware (%d)\n", ret);
-		return;
-	}
-
-	/* Load the firmware */
-	ret = if_cs_prog_helper(card, helper);
-	if (ret == 0 && (card->model != MODEL_8305))
-		ret = if_cs_prog_real(card, mainfw);
-	if (ret)
-		return;
-
-	/* Now actually get the IRQ */
-	ret = request_irq(card->p_dev->irq, if_cs_interrupt,
-		IRQF_SHARED, DRV_NAME, card);
-	if (ret) {
-		pr_err("error in request_irq\n");
-		return;
-	}
-
-	/*
-	 * Clear any interrupt cause that happened while sending
-	 * firmware/initializing card
-	 */
-	if_cs_write16(card, IF_CS_CARD_INT_CAUSE, IF_CS_BIT_MASK);
-	if_cs_enable_ints(card);
-
-	/* And finally bring the card up */
-	priv->fw_ready = 1;
-	if (lbs_start_card(priv) != 0) {
-		pr_err("could not activate card\n");
-		free_irq(card->p_dev->irq, card);
-	}
-}
-
-
-/********************************************************************/
-/* Callback functions for libertas.ko                               */
-/********************************************************************/
-
-/* Send commands or data packets to the card */
-static int if_cs_host_to_card(struct lbs_private *priv,
-	u8 type,
-	u8 *buf,
-	u16 nb)
-{
-	int ret = -1;
-
-	switch (type) {
-	case MVMS_DAT:
-		priv->dnld_sent = DNLD_DATA_SENT;
-		if_cs_send_data(priv, buf, nb);
-		ret = 0;
-		break;
-	case MVMS_CMD:
-		priv->dnld_sent = DNLD_CMD_SENT;
-		ret = if_cs_send_cmd(priv, buf, nb);
-		break;
-	default:
-		netdev_err(priv->dev, "%s: unsupported type %d\n",
-			   __func__, type);
-	}
-
-	return ret;
-}
-
-
-static void if_cs_release(struct pcmcia_device *p_dev)
-{
-	struct if_cs_card *card = p_dev->priv;
-
-	free_irq(p_dev->irq, card);
-	pcmcia_disable_device(p_dev);
-	if (card->iobase)
-		ioport_unmap(card->iobase);
-}
-
-
-static int if_cs_ioprobe(struct pcmcia_device *p_dev, void *priv_data)
-{
-	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
-	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
-
-	if (p_dev->resource[1]->end) {
-		pr_err("wrong CIS (check number of IO windows)\n");
-		return -ENODEV;
-	}
-
-	/* This reserves IO space but doesn't actually enable it */
-	return pcmcia_request_io(p_dev);
-}
-
-static int if_cs_probe(struct pcmcia_device *p_dev)
-{
-	int ret = -ENOMEM;
-	unsigned int prod_id;
-	struct lbs_private *priv;
-	struct if_cs_card *card;
-
-	card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL);
-	if (!card)
-		goto out;
-
-	card->p_dev = p_dev;
-	p_dev->priv = card;
-
-	p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
-
-	if (pcmcia_loop_config(p_dev, if_cs_ioprobe, NULL)) {
-		pr_err("error in pcmcia_loop_config\n");
-		goto out1;
-	}
-
-	/*
-	 * Allocate an interrupt line.  Note that this does not assign
-	 * a handler to the interrupt, unless the 'Handler' member of
-	 * the irq structure is initialized.
-	 */
-	if (!p_dev->irq)
-		goto out1;
-
-	/* Initialize io access */
-	card->iobase = ioport_map(p_dev->resource[0]->start,
-				resource_size(p_dev->resource[0]));
-	if (!card->iobase) {
-		pr_err("error in ioport_map\n");
-		ret = -EIO;
-		goto out1;
-	}
-
-	ret = pcmcia_enable_device(p_dev);
-	if (ret) {
-		pr_err("error in pcmcia_enable_device\n");
-		goto out2;
-	}
-
-	/* Finally, report what we've done */
-	lbs_deb_cs("irq %d, io %pR", p_dev->irq, p_dev->resource[0]);
-
-	/*
-	 * Most of the libertas cards can do unaligned register access, but some
-	 * weird ones cannot. That's especially true for the CF8305 card.
-	 */
-	card->align_regs = false;
-
-	card->model = get_model(p_dev->manf_id, p_dev->card_id);
-	if (card->model == MODEL_UNKNOWN) {
-		pr_err("unsupported manf_id 0x%04x / card_id 0x%04x\n",
-		       p_dev->manf_id, p_dev->card_id);
-		ret = -ENODEV;
-		goto out2;
-	}
-
-	/* Check if we have a current silicon */
-	prod_id = if_cs_read8(card, IF_CS_PRODUCT_ID);
-	if (card->model == MODEL_8305) {
-		card->align_regs = true;
-		if (prod_id < IF_CS_CF8305_B1_REV) {
-			pr_err("8305 rev B0 and older are not supported\n");
-			ret = -ENODEV;
-			goto out2;
-		}
-	}
-
-	if ((card->model == MODEL_8381) && prod_id < IF_CS_CF8381_B3_REV) {
-		pr_err("8381 rev B2 and older are not supported\n");
-		ret = -ENODEV;
-		goto out2;
-	}
-
-	if ((card->model == MODEL_8385) && prod_id < IF_CS_CF8385_B1_REV) {
-		pr_err("8385 rev B0 and older are not supported\n");
-		ret = -ENODEV;
-		goto out2;
-	}
-
-	/* Make this card known to the libertas driver */
-	priv = lbs_add_card(card, &p_dev->dev);
-	if (IS_ERR(priv)) {
-		ret = PTR_ERR(priv);
-		goto out2;
-	}
-
-	/* Set up fields in lbs_private */
-	card->priv = priv;
-	priv->card = card;
-	priv->hw_host_to_card = if_cs_host_to_card;
-	priv->enter_deep_sleep = NULL;
-	priv->exit_deep_sleep = NULL;
-	priv->reset_deep_sleep_wakeup = NULL;
-
-	/* Get firmware */
-	ret = lbs_get_firmware_async(priv, &p_dev->dev, card->model, fw_table,
-				     if_cs_prog_firmware);
-	if (ret) {
-		pr_err("failed to find firmware (%d)\n", ret);
-		goto out3;
-	}
-
-	goto out;
-
-out3:
-	lbs_remove_card(priv);
-out2:
-	ioport_unmap(card->iobase);
-out1:
-	pcmcia_disable_device(p_dev);
-out:
-	return ret;
-}
-
-
-static void if_cs_detach(struct pcmcia_device *p_dev)
-{
-	struct if_cs_card *card = p_dev->priv;
-
-	lbs_stop_card(card->priv);
-	lbs_remove_card(card->priv);
-	if_cs_disable_ints(card);
-	if_cs_release(p_dev);
-	kfree(card);
-}
-
-
-
-/********************************************************************/
-/* Module initialization                                            */
-/********************************************************************/
-
-static const struct pcmcia_device_id if_cs_ids[] = {
-	PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID, CF8305_CARDID),
-	PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID, CF8381_CARDID),
-	PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID, CF8385_CARDID),
-	/* NOTE: keep in sync with get_model() */
-	PCMCIA_DEVICE_NULL,
-};
-MODULE_DEVICE_TABLE(pcmcia, if_cs_ids);
-
-static struct pcmcia_driver lbs_driver = {
-	.owner		= THIS_MODULE,
-	.name		= DRV_NAME,
-	.probe		= if_cs_probe,
-	.remove		= if_cs_detach,
-	.id_table       = if_cs_ids,
-};
-module_pcmcia_driver(lbs_driver);
-- 
2.39.2