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Message-Id: <20231023131953.2876682-2-arnd@kernel.org>
Date: Mon, 23 Oct 2023 15:19:43 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Kalle Valo <kvalo@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>,
"David S . Miller" <davem@...emloft.net>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Claudiu Beznea <claudiu.beznea@...on.dev>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Geoff Levand <geoff@...radead.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jakub Kicinski <kuba@...nel.org>,
Jeff Johnson <quic_jjohnson@...cinc.com>,
Johannes Berg <johannes@...solutions.net>,
Larry Finger <Larry.Finger@...inger.net>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Pavel Machek <pavel@....cz>, Stanislaw Gruszka <stf_xl@...pl>,
Gregory Greenman <gregory.greenman@...el.com>,
linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-staging@...ts.linux.dev, linux-wireless@...r.kernel.org
Subject: [PATCH 01/10] wifi: libertas: drop 16-bit PCMCIA support
From: Arnd Bergmann <arnd@...db.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@...db.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@...l.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@...l.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
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