iwmc3200wifi: Add new Intel Wireless Multicomm 802.11 driver

This driver supports Intel's full MAC wireless multicomm 802.11 hardware.
Although the hardware is a 802.11agn device, we currently only support
802.11ag, in managed and ad-hoc mode (no AP mode for now).

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.c b/drivers/net/wireless/iwmc3200wifi/eeprom.c
new file mode 100644
index 000000000000..0f34b84fd2eb
--- /dev/null
+++ b/drivers/net/wireless/iwmc3200wifi/eeprom.c
@@ -0,0 +1,187 @@
+/*
+ * Intel Wireless Multicomm 3200 WiFi driver
+ *
+ * Copyright (C) 2009 Intel Corporation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *
+ * Intel Corporation <ilw@linux.intel.com>
+ * Samuel Ortiz <samuel.ortiz@intel.com>
+ * Zhu Yi <yi.zhu@intel.com>
+ *
+ */
+
+#include <linux/kernel.h>
+
+#include "iwm.h"
+#include "umac.h"
+#include "commands.h"
+#include "eeprom.h"
+
+static struct iwm_eeprom_entry eeprom_map[] = {
+	[IWM_EEPROM_SIG] =
+	{"Signature", IWM_EEPROM_SIG_OFF, IWM_EEPROM_SIG_LEN},
+
+	[IWM_EEPROM_VERSION] =
+	{"Version", IWM_EEPROM_VERSION_OFF, IWM_EEPROM_VERSION_LEN},
+
+	[IWM_EEPROM_OEM_HW_VERSION] =
+	{"OEM HW version", IWM_EEPROM_OEM_HW_VERSION_OFF,
+	 IWM_EEPROM_OEM_HW_VERSION_LEN},
+
+	[IWM_EEPROM_MAC_VERSION] =
+	{"MAC version", IWM_EEPROM_MAC_VERSION_OFF, IWM_EEPROM_MAC_VERSION_LEN},
+
+	[IWM_EEPROM_CARD_ID] =
+	{"Card ID", IWM_EEPROM_CARD_ID_OFF, IWM_EEPROM_CARD_ID_LEN},
+
+	[IWM_EEPROM_RADIO_CONF] =
+	{"Radio config", IWM_EEPROM_RADIO_CONF_OFF, IWM_EEPROM_RADIO_CONF_LEN},
+
+	[IWM_EEPROM_SKU_CAP] =
+	{"SKU capabilities", IWM_EEPROM_SKU_CAP_OFF, IWM_EEPROM_SKU_CAP_LEN},
+
+	[IWM_EEPROM_CALIB_RXIQ_OFFSET] =
+	{"RX IQ offset", IWM_EEPROM_CALIB_RXIQ_OFF, IWM_EEPROM_INDIRECT_LEN},
+
+	[IWM_EEPROM_CALIB_RXIQ] =
+	{"Calib RX IQ", 0, IWM_EEPROM_CALIB_RXIQ_LEN},
+};
+
+
+static int iwm_eeprom_read(struct iwm_priv *iwm, u8 eeprom_id)
+{
+	int ret;
+	u32 entry_size, chunk_size, data_offset = 0, addr_offset = 0;
+	u32 addr;
+	struct iwm_udma_wifi_cmd udma_cmd;
+	struct iwm_umac_cmd umac_cmd;
+	struct iwm_umac_cmd_eeprom_proxy eeprom_cmd;
+
+	if (eeprom_id > (IWM_EEPROM_LAST - 1))
+		return -EINVAL;
+
+	entry_size = eeprom_map[eeprom_id].length;
+
+	if (eeprom_id >= IWM_EEPROM_INDIRECT_DATA) {
+		/* indirect data */
+		u32 off_id = eeprom_id - IWM_EEPROM_INDIRECT_DATA +
+			     IWM_EEPROM_INDIRECT_OFFSET;
+
+		eeprom_map[eeprom_id].offset =
+			*(u16 *)(iwm->eeprom + eeprom_map[off_id].offset) << 1;
+	}
+
+	addr = eeprom_map[eeprom_id].offset;
+
+	udma_cmd.eop = 1;
+	udma_cmd.credit_group = 0x4;
+	udma_cmd.ra_tid = UMAC_HDI_ACT_TBL_IDX_HOST_CMD;
+	udma_cmd.lmac_offset = 0;
+
+	umac_cmd.id = UMAC_CMD_OPCODE_EEPROM_PROXY;
+	umac_cmd.resp = 1;
+
+	while (entry_size > 0) {
+		chunk_size = min_t(u32, entry_size, IWM_MAX_EEPROM_DATA_LEN);
+
+		eeprom_cmd.hdr.type =
+			cpu_to_le32(IWM_UMAC_CMD_EEPROM_TYPE_READ);
+		eeprom_cmd.hdr.offset = cpu_to_le32(addr + addr_offset);
+		eeprom_cmd.hdr.len = cpu_to_le32(chunk_size);
+
+		ret = iwm_hal_send_umac_cmd(iwm, &udma_cmd,
+					    &umac_cmd, &eeprom_cmd,
+				     sizeof(struct iwm_umac_cmd_eeprom_proxy));
+		if (ret < 0) {
+			IWM_ERR(iwm, "Couldn't read eeprom\n");
+			return ret;
+		}
+
+		ret = iwm_notif_handle(iwm, UMAC_CMD_OPCODE_EEPROM_PROXY,
+				       IWM_SRC_UMAC, 2*HZ);
+		if (ret < 0) {
+			IWM_ERR(iwm, "Did not get any eeprom answer\n");
+			return ret;
+		}
+
+		data_offset += chunk_size;
+		addr_offset += chunk_size;
+		entry_size -= chunk_size;
+	}
+
+	return 0;
+}
+
+u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id)
+{
+	if (!iwm->eeprom)
+		return ERR_PTR(-ENODEV);
+
+	return iwm->eeprom + eeprom_map[eeprom_id].offset;
+}
+
+int iwm_eeprom_init(struct iwm_priv *iwm)
+{
+	int i, ret = 0;
+	char name[32];
+
+	iwm->eeprom = kzalloc(IWM_EEPROM_LEN, GFP_KERNEL);
+	if (!iwm->eeprom)
+		return -ENOMEM;
+
+	for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
+#ifdef CONFIG_IWM_B0_HW_SUPPORT
+		if (iwm->conf.hw_b0 && (i >= IWM_EEPROM_INDIRECT_OFFSET))
+			break;
+#endif
+		ret = iwm_eeprom_read(iwm, i);
+		if (ret < 0) {
+			IWM_ERR(iwm, "Couldn't read eeprom entry #%d: %s\n",
+				i, eeprom_map[i].name);
+			break;
+		}
+	}
+
+	IWM_DBG_BOOT(iwm, DBG, "EEPROM dump:\n");
+	for (i = IWM_EEPROM_FIRST; i < IWM_EEPROM_LAST; i++) {
+		memset(name, 0, 32);
+		sprintf(name, "%s: ", eeprom_map[i].name);
+
+		IWM_HEXDUMP(iwm, DBG, BOOT, name,
+			    iwm->eeprom + eeprom_map[i].offset,
+			    eeprom_map[i].length);
+	}
+
+	return ret;
+}
+
+void iwm_eeprom_exit(struct iwm_priv *iwm)
+{
+	kfree(iwm->eeprom);
+}