b43: N-PHY: implement and add multi-dimensional table reading

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_n.c

@@ -829,8 +829,7 @@ static void b43_nphy_tx_pwr_ctrl_coef_setup(struct b43_wldev *dev)
 	if (nphy->hang_avoid)
 		b43_nphy_stay_in_carrier_search(dev, true);
 
-	/* TODO: Read an N PHY Table with ID 15, length 7, offset 80,
-		width 16, and data pointer buffer */
+	b43_ntab_read_bulk(dev, B43_NTAB16(15, 80), 7, buffer);
 
 	for (i = 0; i < 2; i++) {
 		tmp = ((buffer[i * 2] & 0x3FF) << 10) |
@@ -1507,8 +1506,7 @@ static struct nphy_txgains b43_nphy_get_tx_gains(struct b43_wldev *dev)
 
 		if (nphy->hang_avoid)
 			b43_nphy_stay_in_carrier_search(dev, true);
-		/* TODO: Read an N PHY Table with ID 7, length 2,
-			offset 0x110, width 16, and curr_gain */
+		b43_ntab_read_bulk(dev, B43_NTAB16(7, 0x110), 2, curr_gain);
 		if (nphy->hang_avoid)
 			b43_nphy_stay_in_carrier_search(dev, false);
 
@@ -1768,8 +1766,7 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 		nphy->hang_avoid = 0;
 	}
 
-	/* TODO: Read an N PHY Table with ID 7, length 2, offset 0x110,
-		width 16, and data pointer save */
+	b43_ntab_read_bulk(dev, B43_NTAB16(7, 0x110), 2, save);
 
 	for (i = 0; i < 2; i++) {
 		b43_nphy_iq_cal_gain_params(dev, i, target, &params[i]);
@@ -1890,9 +1887,8 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 				udelay(10);
 			}
 
-			/* TODO: Read an N PHY Table with ID 15,
-				length table_length, offset 96, width 16,
-				and data pointer buffer */
+			b43_ntab_read_bulk(dev, B43_NTAB16(15, 96), length,
+						buffer);
 			b43_ntab_write_bulk(dev, B43_NTAB16(15, 64), length,
 						buffer);
 
@@ -1907,8 +1903,7 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 
 		if (!mphase || nphy->mphase_cal_phase_id == last) {
 			b43_ntab_write_bulk(dev, B43_NTAB16(15, 96), 4, buffer);
-			/* TODO: Read an N PHY Table with ID 15, length 4,
-				offset 80, width 16, and data pointer buffer */
+			b43_ntab_read_bulk(dev, B43_NTAB16(15, 80), 4, buffer);
 			if (dev->phy.rev < 3) {
 				buffer[0] = 0;
 				buffer[1] = 0;
@@ -1926,9 +1921,8 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 			length = 11;
 			if (dev->phy.rev < 3)
 				length -= 2;
-			/* TODO: Read an N PHY Table with ID 15, length length,
-				offset 96, width 16, and data pointer
-				nphy->txiqlocal_bestc */
+			b43_ntab_read_bulk(dev, B43_NTAB16(15, 96), length,
+						nphy->txiqlocal_bestc);
 			nphy->txiqlocal_coeffsvalid = true;
 			/* TODO: Set nphy->txiqlocal_chanspec to
 				the current channel */
@@ -1936,9 +1930,8 @@ static int b43_nphy_cal_tx_iq_lo(struct b43_wldev *dev,
 			length = 11;
 			if (dev->phy.rev < 3)
 				length -= 2;
-			/* TODO: Read an N PHY Table with ID 5, length length,
-				offset 96, width 16, and data pointer
-				nphy->mphase_txcal_bestcoeffs */
+			b43_ntab_read_bulk(dev, B43_NTAB16(15, 96), length,
+						nphy->mphase_txcal_bestcoeffs);
 		}
 
 		b43_nphy_stop_playback(dev);
@@ -1990,8 +1983,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
 
 	if (dev->phy.rev < 2)
 		;/* TODO: Call N PHY Reapply TX Cal Coeffs */
-	/* TODO: Read an N PHY Table with ID 7, length 2, offset 0x110,
-		width 16, and data gain_save */
+	b43_ntab_read_bulk(dev, B43_NTAB16(7, 0x110), 2, gain_save);
 	for (i = 0; i < 2; i++) {
 		b43_nphy_iq_cal_gain_params(dev, i, target, &cal_params[i]);
 		cal_gain[i] = cal_params[i].cal_gain;

drivers/net/wireless/b43/tables_nphy.c

@@ -2950,6 +2950,41 @@ u32 b43_ntab_read(struct b43_wldev *dev, u32 offset)
 	return value;
 }
 
+void b43_ntab_read_bulk(struct b43_wldev *dev, u32 offset,
+			 unsigned int nr_elements, void *_data)
+{
+	u32 type;
+	u8 *data = _data;
+	unsigned int i;
+
+	type = offset & B43_NTAB_TYPEMASK;
+	offset &= ~B43_NTAB_TYPEMASK;
+	B43_WARN_ON(offset > 0xFFFF);
+
+	b43_phy_write(dev, B43_NPHY_TABLE_ADDR, offset);
+
+	for (i = 0; i < nr_elements; i++) {
+		switch (type) {
+		case B43_NTAB_8BIT:
+			*data = b43_phy_read(dev, B43_NPHY_TABLE_DATALO) & 0xFF;
+			data++;
+			break;
+		case B43_NTAB_16BIT:
+			*((u16 *)data) = b43_phy_read(dev, B43_NPHY_TABLE_DATALO);
+			data += 2;
+			break;
+		case B43_NTAB_32BIT:
+			*((u32 *)data) = b43_phy_read(dev, B43_NPHY_TABLE_DATAHI);
+			*((u32 *)data) <<= 16;
+			*((u32 *)data) |= b43_phy_read(dev, B43_NPHY_TABLE_DATALO);
+			data += 4;
+			break;
+		default:
+			B43_WARN_ON(1);
+		}
+	}
+}
+
 void b43_ntab_write(struct b43_wldev *dev, u32 offset, u32 value)
 {
 	u32 type;

drivers/net/wireless/b43/tables_nphy.h

@@ -143,6 +143,8 @@ b43_nphy_get_chantabent(struct b43_wldev *dev, u8 channel);
 #define B43_NTAB_TX_IQLO_CAL_CMDS_FULLCAL_REV3		12
 
 u32 b43_ntab_read(struct b43_wldev *dev, u32 offset);
+void b43_ntab_read_bulk(struct b43_wldev *dev, u32 offset,
+			 unsigned int nr_elements, void *_data);
 void b43_ntab_write(struct b43_wldev *dev, u32 offset, u32 value);
 void b43_ntab_write_bulk(struct b43_wldev *dev, u32 offset,
 			  unsigned int nr_elements, const void *_data);