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path: root/drivers/net/wireless/orinoco/hermes.c
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Diffstat (limited to 'drivers/net/wireless/orinoco/hermes.c')
-rw-r--r--drivers/net/wireless/orinoco/hermes.c286
1 files changed, 263 insertions, 23 deletions
diff --git a/drivers/net/wireless/orinoco/hermes.c b/drivers/net/wireless/orinoco/hermes.c
index 1a2fca76fd3c..6c6a23e08df6 100644
--- a/drivers/net/wireless/orinoco/hermes.c
+++ b/drivers/net/wireless/orinoco/hermes.c
@@ -52,6 +52,26 @@
#define ALLOC_COMPL_TIMEOUT (1000) /* in iterations of ~10us */
/*
+ * AUX port access. To unlock the AUX port write the access keys to the
+ * PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL
+ * register. Then read it and make sure it's HERMES_AUX_ENABLED.
+ */
+#define HERMES_AUX_ENABLE 0x8000 /* Enable auxiliary port access */
+#define HERMES_AUX_DISABLE 0x4000 /* Disable to auxiliary port access */
+#define HERMES_AUX_ENABLED 0xC000 /* Auxiliary port is open */
+#define HERMES_AUX_DISABLED 0x0000 /* Auxiliary port is closed */
+
+#define HERMES_AUX_PW0 0xFE01
+#define HERMES_AUX_PW1 0xDC23
+#define HERMES_AUX_PW2 0xBA45
+
+/* HERMES_CMD_DOWNLD */
+#define HERMES_PROGRAM_DISABLE (0x0000 | HERMES_CMD_DOWNLD)
+#define HERMES_PROGRAM_ENABLE_VOLATILE (0x0100 | HERMES_CMD_DOWNLD)
+#define HERMES_PROGRAM_ENABLE_NON_VOLATILE (0x0200 | HERMES_CMD_DOWNLD)
+#define HERMES_PROGRAM_NON_VOLATILE (0x0300 | HERMES_CMD_DOWNLD)
+
+/*
* Debugging helpers
*/
@@ -70,6 +90,7 @@
#endif /* ! HERMES_DEBUG */
+static const struct hermes_ops hermes_ops_local;
/*
* Internal functions
@@ -111,9 +132,9 @@ static int hermes_issue_cmd(hermes_t *hw, u16 cmd, u16 param0,
*/
/* For doing cmds that wipe the magic constant in SWSUPPORT0 */
-int hermes_doicmd_wait(hermes_t *hw, u16 cmd,
- u16 parm0, u16 parm1, u16 parm2,
- struct hermes_response *resp)
+static int hermes_doicmd_wait(hermes_t *hw, u16 cmd,
+ u16 parm0, u16 parm1, u16 parm2,
+ struct hermes_response *resp)
{
int err = 0;
int k;
@@ -163,17 +184,18 @@ int hermes_doicmd_wait(hermes_t *hw, u16 cmd,
out:
return err;
}
-EXPORT_SYMBOL(hermes_doicmd_wait);
void hermes_struct_init(hermes_t *hw, void __iomem *address, int reg_spacing)
{
hw->iobase = address;
hw->reg_spacing = reg_spacing;
hw->inten = 0x0;
+ hw->eeprom_pda = false;
+ hw->ops = &hermes_ops_local;
}
EXPORT_SYMBOL(hermes_struct_init);
-int hermes_init(hermes_t *hw)
+static int hermes_init(hermes_t *hw)
{
u16 reg;
int err = 0;
@@ -217,7 +239,6 @@ int hermes_init(hermes_t *hw)
return err;
}
-EXPORT_SYMBOL(hermes_init);
/* Issue a command to the chip, and (busy!) wait for it to
* complete.
@@ -228,8 +249,8 @@ EXPORT_SYMBOL(hermes_init);
* > 0 on error returned by the firmware
*
* Callable from any context, but locking is your problem. */
-int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
- struct hermes_response *resp)
+static int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
+ struct hermes_response *resp)
{
int err;
int k;
@@ -291,9 +312,8 @@ int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
out:
return err;
}
-EXPORT_SYMBOL(hermes_docmd_wait);
-int hermes_allocate(hermes_t *hw, u16 size, u16 *fid)
+static int hermes_allocate(hermes_t *hw, u16 size, u16 *fid)
{
int err = 0;
int k;
@@ -333,7 +353,6 @@ int hermes_allocate(hermes_t *hw, u16 size, u16 *fid)
return 0;
}
-EXPORT_SYMBOL(hermes_allocate);
/* Set up a BAP to read a particular chunk of data from card's internal buffer.
*
@@ -403,8 +422,8 @@ static int hermes_bap_seek(hermes_t *hw, int bap, u16 id, u16 offset)
* 0 on success
* > 0 on error from firmware
*/
-int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
- u16 id, u16 offset)
+static int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
+ u16 id, u16 offset)
{
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
int err = 0;
@@ -422,7 +441,6 @@ int hermes_bap_pread(hermes_t *hw, int bap, void *buf, int len,
out:
return err;
}
-EXPORT_SYMBOL(hermes_bap_pread);
/* Write a block of data to the chip's buffer, via the
* BAP. Synchronization/serialization is the caller's problem.
@@ -432,8 +450,8 @@ EXPORT_SYMBOL(hermes_bap_pread);
* 0 on success
* > 0 on error from firmware
*/
-int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
- u16 id, u16 offset)
+static int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
+ u16 id, u16 offset)
{
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
int err = 0;
@@ -451,7 +469,6 @@ int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, int len,
out:
return err;
}
-EXPORT_SYMBOL(hermes_bap_pwrite);
/* Read a Length-Type-Value record from the card.
*
@@ -461,8 +478,8 @@ EXPORT_SYMBOL(hermes_bap_pwrite);
* practice.
*
* Callable from user or bh context. */
-int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned bufsize,
- u16 *length, void *buf)
+static int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned bufsize,
+ u16 *length, void *buf)
{
int err = 0;
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
@@ -505,10 +522,9 @@ int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned bufsize,
return 0;
}
-EXPORT_SYMBOL(hermes_read_ltv);
-int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
- u16 length, const void *value)
+static int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
+ u16 length, const void *value)
{
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
int err = 0;
@@ -533,4 +549,228 @@ int hermes_write_ltv(hermes_t *hw, int bap, u16 rid,
return err;
}
-EXPORT_SYMBOL(hermes_write_ltv);
+
+/*** Hermes AUX control ***/
+
+static inline void
+hermes_aux_setaddr(hermes_t *hw, u32 addr)
+{
+ hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7));
+ hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F));
+}
+
+static inline int
+hermes_aux_control(hermes_t *hw, int enabled)
+{
+ int desired_state = enabled ? HERMES_AUX_ENABLED : HERMES_AUX_DISABLED;
+ int action = enabled ? HERMES_AUX_ENABLE : HERMES_AUX_DISABLE;
+ int i;
+
+ /* Already open? */
+ if (hermes_read_reg(hw, HERMES_CONTROL) == desired_state)
+ return 0;
+
+ hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0);
+ hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1);
+ hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2);
+ hermes_write_reg(hw, HERMES_CONTROL, action);
+
+ for (i = 0; i < 20; i++) {
+ udelay(10);
+ if (hermes_read_reg(hw, HERMES_CONTROL) ==
+ desired_state)
+ return 0;
+ }
+
+ return -EBUSY;
+}
+
+/*** Hermes programming ***/
+
+/* About to start programming data (Hermes I)
+ * offset is the entry point
+ *
+ * Spectrum_cs' Symbol fw does not require this
+ * wl_lkm Agere fw does
+ * Don't know about intersil
+ */
+static int hermesi_program_init(hermes_t *hw, u32 offset)
+{
+ int err;
+
+ /* Disable interrupts?*/
+ /*hw->inten = 0x0;*/
+ /*hermes_write_regn(hw, INTEN, 0);*/
+ /*hermes_set_irqmask(hw, 0);*/
+
+ /* Acknowledge any outstanding command */
+ hermes_write_regn(hw, EVACK, 0xFFFF);
+
+ /* Using init_cmd_wait rather than cmd_wait */
+ err = hw->ops->init_cmd_wait(hw,
+ 0x0100 | HERMES_CMD_INIT,
+ 0, 0, 0, NULL);
+ if (err)
+ return err;
+
+ err = hw->ops->init_cmd_wait(hw,
+ 0x0000 | HERMES_CMD_INIT,
+ 0, 0, 0, NULL);
+ if (err)
+ return err;
+
+ err = hermes_aux_control(hw, 1);
+ pr_debug("AUX enable returned %d\n", err);
+
+ if (err)
+ return err;
+
+ pr_debug("Enabling volatile, EP 0x%08x\n", offset);
+ err = hw->ops->init_cmd_wait(hw,
+ HERMES_PROGRAM_ENABLE_VOLATILE,
+ offset & 0xFFFFu,
+ offset >> 16,
+ 0,
+ NULL);
+ pr_debug("PROGRAM_ENABLE returned %d\n", err);
+
+ return err;
+}
+
+/* Done programming data (Hermes I)
+ *
+ * Spectrum_cs' Symbol fw does not require this
+ * wl_lkm Agere fw does
+ * Don't know about intersil
+ */
+static int hermesi_program_end(hermes_t *hw)
+{
+ struct hermes_response resp;
+ int rc = 0;
+ int err;
+
+ rc = hw->ops->cmd_wait(hw, HERMES_PROGRAM_DISABLE, 0, &resp);
+
+ pr_debug("PROGRAM_DISABLE returned %d, "
+ "r0 0x%04x, r1 0x%04x, r2 0x%04x\n",
+ rc, resp.resp0, resp.resp1, resp.resp2);
+
+ if ((rc == 0) &&
+ ((resp.status & HERMES_STATUS_CMDCODE) != HERMES_CMD_DOWNLD))
+ rc = -EIO;
+
+ err = hermes_aux_control(hw, 0);
+ pr_debug("AUX disable returned %d\n", err);
+
+ /* Acknowledge any outstanding command */
+ hermes_write_regn(hw, EVACK, 0xFFFF);
+
+ /* Reinitialise, ignoring return */
+ (void) hw->ops->init_cmd_wait(hw, 0x0000 | HERMES_CMD_INIT,
+ 0, 0, 0, NULL);
+
+ return rc ? rc : err;
+}
+
+static int hermes_program_bytes(struct hermes *hw, const char *data,
+ u32 addr, u32 len)
+{
+ /* wl lkm splits the programming into chunks of 2000 bytes.
+ * This restriction appears to come from USB. The PCMCIA
+ * adapters can program the whole lot in one go */
+ hermes_aux_setaddr(hw, addr);
+ hermes_write_bytes(hw, HERMES_AUXDATA, data, len);
+ return 0;
+}
+
+/* Read PDA from the adapter */
+static int hermes_read_pda(hermes_t *hw, __le16 *pda, u32 pda_addr, u16 pda_len)
+{
+ int ret;
+ u16 pda_size;
+ u16 data_len = pda_len;
+ __le16 *data = pda;
+
+ if (hw->eeprom_pda) {
+ /* PDA of spectrum symbol is in eeprom */
+
+ /* Issue command to read EEPROM */
+ ret = hw->ops->cmd_wait(hw, HERMES_CMD_READMIF, 0, NULL);
+ if (ret)
+ return ret;
+ } else {
+ /* wl_lkm does not include PDA size in the PDA area.
+ * We will pad the information into pda, so other routines
+ * don't have to be modified */
+ pda[0] = cpu_to_le16(pda_len - 2);
+ /* Includes CFG_PROD_DATA but not itself */
+ pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */
+ data_len = pda_len - 4;
+ data = pda + 2;
+ }
+
+ /* Open auxiliary port */
+ ret = hermes_aux_control(hw, 1);
+ pr_debug("AUX enable returned %d\n", ret);
+ if (ret)
+ return ret;
+
+ /* Read PDA */
+ hermes_aux_setaddr(hw, pda_addr);
+ hermes_read_words(hw, HERMES_AUXDATA, data, data_len / 2);
+
+ /* Close aux port */
+ ret = hermes_aux_control(hw, 0);
+ pr_debug("AUX disable returned %d\n", ret);
+
+ /* Check PDA length */
+ pda_size = le16_to_cpu(pda[0]);
+ pr_debug("Actual PDA length %d, Max allowed %d\n",
+ pda_size, pda_len);
+ if (pda_size > pda_len)
+ return -EINVAL;
+
+ return 0;
+}
+
+static void hermes_lock_irqsave(spinlock_t *lock,
+ unsigned long *flags) __acquires(lock)
+{
+ spin_lock_irqsave(lock, *flags);
+}
+
+static void hermes_unlock_irqrestore(spinlock_t *lock,
+ unsigned long *flags) __releases(lock)
+{
+ spin_unlock_irqrestore(lock, *flags);
+}
+
+static void hermes_lock_irq(spinlock_t *lock) __acquires(lock)
+{
+ spin_lock_irq(lock);
+}
+
+static void hermes_unlock_irq(spinlock_t *lock) __releases(lock)
+{
+ spin_unlock_irq(lock);
+}
+
+/* Hermes operations for local buses */
+static const struct hermes_ops hermes_ops_local = {
+ .init = hermes_init,
+ .cmd_wait = hermes_docmd_wait,
+ .init_cmd_wait = hermes_doicmd_wait,
+ .allocate = hermes_allocate,
+ .read_ltv = hermes_read_ltv,
+ .write_ltv = hermes_write_ltv,
+ .bap_pread = hermes_bap_pread,
+ .bap_pwrite = hermes_bap_pwrite,
+ .read_pda = hermes_read_pda,
+ .program_init = hermesi_program_init,
+ .program_end = hermesi_program_end,
+ .program = hermes_program_bytes,
+ .lock_irqsave = hermes_lock_irqsave,
+ .unlock_irqrestore = hermes_unlock_irqrestore,
+ .lock_irq = hermes_lock_irq,
+ .unlock_irq = hermes_unlock_irq,
+};