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Date: Wed, 20 Aug 2014 23:17:54 +0100
From: Mark Einon <mark.einon@...il.com>
To: gregkh@...uxfoundation.org
Cc: devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, Mark Einon <mark.einon@...il.com>
Subject: [PATCH 4/8] staging: et131x: Use for loop to initialise contiguous macstat registers to zero
Replace a long list of contiguous writel() calls with a for loop iterating
over the same address values.
Also remove redundant comments on the macstat registers, the variable names
are good enough.
Signed-off-by: Mark Einon <mark.einon@...il.com>
---
drivers/staging/et131x/et131x.c | 59 +++----------------------
drivers/staging/et131x/et131x.h | 96 +----------------------------------------
2 files changed, 7 insertions(+), 148 deletions(-)
diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 44cc684..fc18e8d 100644
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -1257,60 +1257,13 @@ static void et1310_config_txmac_regs(struct et131x_adapter *adapter)
static void et1310_config_macstat_regs(struct et131x_adapter *adapter)
{
- struct macstat_regs __iomem *macstat =
- &adapter->regs->macstat;
+ struct macstat_regs __iomem *macstat = &adapter->regs->macstat;
+ u32 *reg;
- /* Next we need to initialize all the macstat registers to zero on
- * the device.
- */
- writel(0, &macstat->txrx_0_64_byte_frames);
- writel(0, &macstat->txrx_65_127_byte_frames);
- writel(0, &macstat->txrx_128_255_byte_frames);
- writel(0, &macstat->txrx_256_511_byte_frames);
- writel(0, &macstat->txrx_512_1023_byte_frames);
- writel(0, &macstat->txrx_1024_1518_byte_frames);
- writel(0, &macstat->txrx_1519_1522_gvln_frames);
-
- writel(0, &macstat->rx_bytes);
- writel(0, &macstat->rx_packets);
- writel(0, &macstat->rx_fcs_errs);
- writel(0, &macstat->rx_multicast_packets);
- writel(0, &macstat->rx_broadcast_packets);
- writel(0, &macstat->rx_control_frames);
- writel(0, &macstat->rx_pause_frames);
- writel(0, &macstat->rx_unknown_opcodes);
- writel(0, &macstat->rx_align_errs);
- writel(0, &macstat->rx_frame_len_errs);
- writel(0, &macstat->rx_code_errs);
- writel(0, &macstat->rx_carrier_sense_errs);
- writel(0, &macstat->rx_undersize_packets);
- writel(0, &macstat->rx_oversize_packets);
- writel(0, &macstat->rx_fragment_packets);
- writel(0, &macstat->rx_jabbers);
- writel(0, &macstat->rx_drops);
-
- writel(0, &macstat->tx_bytes);
- writel(0, &macstat->tx_packets);
- writel(0, &macstat->tx_multicast_packets);
- writel(0, &macstat->tx_broadcast_packets);
- writel(0, &macstat->tx_pause_frames);
- writel(0, &macstat->tx_deferred);
- writel(0, &macstat->tx_excessive_deferred);
- writel(0, &macstat->tx_single_collisions);
- writel(0, &macstat->tx_multiple_collisions);
- writel(0, &macstat->tx_late_collisions);
- writel(0, &macstat->tx_excessive_collisions);
- writel(0, &macstat->tx_total_collisions);
- writel(0, &macstat->tx_pause_honored_frames);
- writel(0, &macstat->tx_drops);
- writel(0, &macstat->tx_jabbers);
- writel(0, &macstat->tx_fcs_errs);
- writel(0, &macstat->tx_control_frames);
- writel(0, &macstat->tx_oversize_frames);
- writel(0, &macstat->tx_undersize_frames);
- writel(0, &macstat->tx_fragments);
- writel(0, &macstat->carry_reg1);
- writel(0, &macstat->carry_reg2);
+ /* initialize all the macstat registers to zero on the device */
+ for (reg = &macstat->txrx_0_64_byte_frames;
+ reg <= &macstat->carry_reg2; reg++)
+ writel(0, reg);
/* Unmask any counters that we want to track the overflow of.
* Initially this will be all counters. It may become clear later
diff --git a/drivers/staging/et131x/et131x.h b/drivers/staging/et131x/et131x.h
index 1318439..95d6d45 100644
--- a/drivers/staging/et131x/et131x.h
+++ b/drivers/staging/et131x/et131x.h
@@ -1259,148 +1259,54 @@ struct mac_regs { /* Location: */
struct macstat_regs { /* Location: */
u32 pad[32]; /* 0x6000 - 607C */
- /* Tx/Rx 0-64 Byte Frame Counter */
+ /* counters */
u32 txrx_0_64_byte_frames; /* 0x6080 */
-
- /* Tx/Rx 65-127 Byte Frame Counter */
u32 txrx_65_127_byte_frames; /* 0x6084 */
-
- /* Tx/Rx 128-255 Byte Frame Counter */
u32 txrx_128_255_byte_frames; /* 0x6088 */
-
- /* Tx/Rx 256-511 Byte Frame Counter */
u32 txrx_256_511_byte_frames; /* 0x608C */
-
- /* Tx/Rx 512-1023 Byte Frame Counter */
u32 txrx_512_1023_byte_frames; /* 0x6090 */
-
- /* Tx/Rx 1024-1518 Byte Frame Counter */
u32 txrx_1024_1518_byte_frames; /* 0x6094 */
-
- /* Tx/Rx 1519-1522 Byte Good VLAN Frame Count */
u32 txrx_1519_1522_gvln_frames; /* 0x6098 */
-
- /* Rx Byte Counter */
u32 rx_bytes; /* 0x609C */
-
- /* Rx Packet Counter */
u32 rx_packets; /* 0x60A0 */
-
- /* Rx FCS Error Counter */
u32 rx_fcs_errs; /* 0x60A4 */
-
- /* Rx Multicast Packet Counter */
u32 rx_multicast_packets; /* 0x60A8 */
-
- /* Rx Broadcast Packet Counter */
u32 rx_broadcast_packets; /* 0x60AC */
-
- /* Rx Control Frame Packet Counter */
u32 rx_control_frames; /* 0x60B0 */
-
- /* Rx Pause Frame Packet Counter */
u32 rx_pause_frames; /* 0x60B4 */
-
- /* Rx Unknown OP Code Counter */
u32 rx_unknown_opcodes; /* 0x60B8 */
-
- /* Rx Alignment Error Counter */
u32 rx_align_errs; /* 0x60BC */
-
- /* Rx Frame Length Error Counter */
u32 rx_frame_len_errs; /* 0x60C0 */
-
- /* Rx Code Error Counter */
u32 rx_code_errs; /* 0x60C4 */
-
- /* Rx Carrier Sense Error Counter */
u32 rx_carrier_sense_errs; /* 0x60C8 */
-
- /* Rx Undersize Packet Counter */
u32 rx_undersize_packets; /* 0x60CC */
-
- /* Rx Oversize Packet Counter */
u32 rx_oversize_packets; /* 0x60D0 */
-
- /* Rx Fragment Counter */
u32 rx_fragment_packets; /* 0x60D4 */
-
- /* Rx Jabber Counter */
u32 rx_jabbers; /* 0x60D8 */
-
- /* Rx Drop */
u32 rx_drops; /* 0x60DC */
-
- /* Tx Byte Counter */
u32 tx_bytes; /* 0x60E0 */
-
- /* Tx Packet Counter */
u32 tx_packets; /* 0x60E4 */
-
- /* Tx Multicast Packet Counter */
u32 tx_multicast_packets; /* 0x60E8 */
-
- /* Tx Broadcast Packet Counter */
u32 tx_broadcast_packets; /* 0x60EC */
-
- /* Tx Pause Control Frame Counter */
u32 tx_pause_frames; /* 0x60F0 */
-
- /* Tx Deferral Packet Counter */
u32 tx_deferred; /* 0x60F4 */
-
- /* Tx Excessive Deferral Packet Counter */
u32 tx_excessive_deferred; /* 0x60F8 */
-
- /* Tx Single Collision Packet Counter */
u32 tx_single_collisions; /* 0x60FC */
-
- /* Tx Multiple Collision Packet Counter */
u32 tx_multiple_collisions; /* 0x6100 */
-
- /* Tx Late Collision Packet Counter */
u32 tx_late_collisions; /* 0x6104 */
-
- /* Tx Excessive Collision Packet Counter */
u32 tx_excessive_collisions; /* 0x6108 */
-
- /* Tx Total Collision Packet Counter */
u32 tx_total_collisions; /* 0x610C */
-
- /* Tx Pause Frame Honored Counter */
u32 tx_pause_honored_frames; /* 0x6110 */
-
- /* Tx Drop Frame Counter */
u32 tx_drops; /* 0x6114 */
-
- /* Tx Jabber Frame Counter */
u32 tx_jabbers; /* 0x6118 */
-
- /* Tx FCS Error Counter */
u32 tx_fcs_errs; /* 0x611C */
-
- /* Tx Control Frame Counter */
u32 tx_control_frames; /* 0x6120 */
-
- /* Tx Oversize Frame Counter */
u32 tx_oversize_frames; /* 0x6124 */
-
- /* Tx Undersize Frame Counter */
u32 tx_undersize_frames; /* 0x6128 */
-
- /* Tx Fragments Frame Counter */
u32 tx_fragments; /* 0x612C */
-
- /* Carry Register One Register */
u32 carry_reg1; /* 0x6130 */
-
- /* Carry Register Two Register */
u32 carry_reg2; /* 0x6134 */
-
- /* Carry Register One Mask Register */
u32 carry_reg1_mask; /* 0x6138 */
-
- /* Carry Register Two Mask Register */
u32 carry_reg2_mask; /* 0x613C */
};
--
2.1.0
--
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