[PATCH] Gianfar update and sysfs support

This seems to have gotten lost, so I'll resend.

Signed-off-by: Andy Fleming <afleming@freescale.com>

* Added sysfs support to gianfar for modifying FIFO and stashing parameters
* Updated driver to support 10 Mbit, full duplex operation
* Improved comments throughout
* Cleaned up and optimized offloading code
* Fixed a bug where rx buffers were being improperly mapped and unmapped
* (only manifested if cache-coherency was off)
* Added support for using the eTSEC exact-match MAC registers
* Bumped the version to 1.3
* Added support for distinguishing between reduced 100 and 10 Mbit modes
* Modified default coalescing values to lower latency
* Added documentation
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 38 insertions, 31 deletions

diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 5065ba82cb76..94a91da84fbb 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -90,12 +90,26 @@ extern const char gfar_driver_version[];
 #define GFAR_RX_MAX_RING_SIZE   256
 #define GFAR_TX_MAX_RING_SIZE   256
 
+#define GFAR_MAX_FIFO_THRESHOLD 511
+#define GFAR_MAX_FIFO_STARVE    511
+#define GFAR_MAX_FIFO_STARVE_OFF 511
+
 #define DEFAULT_RX_BUFFER_SIZE  1536
 #define TX_RING_MOD_MASK(size) (size-1)
 #define RX_RING_MOD_MASK(size) (size-1)
 #define JUMBO_BUFFER_SIZE 9728
 #define JUMBO_FRAME_SIZE 9600
 
+#define DEFAULT_FIFO_TX_THR 0x100
+#define DEFAULT_FIFO_TX_STARVE 0x40
+#define DEFAULT_FIFO_TX_STARVE_OFF 0x80
+#define DEFAULT_BD_STASH 1
+#define DEFAULT_STASH_LENGTH    64
+#define DEFAULT_STASH_INDEX     0
+
+/* The number of Exact Match registers */
+#define GFAR_EM_NUM     15
+
 /* Latency of interface clock in nanoseconds */
 /* Interface clock latency , in this case, means the
  * time described by a value of 1 in the interrupt
@@ -112,11 +126,11 @@ extern const char gfar_driver_version[];
 
 #define DEFAULT_TX_COALESCE 1
 #define DEFAULT_TXCOUNT 16
-#define DEFAULT_TXTIME  400
+#define DEFAULT_TXTIME  4
 
 #define DEFAULT_RX_COALESCE 1
 #define DEFAULT_RXCOUNT 16
-#define DEFAULT_RXTIME  400
+#define DEFAULT_RXTIME  4
 
 #define TBIPA_VALUE             0x1f
 #define MIIMCFG_INIT_VALUE      0x00000007
@@ -147,6 +161,7 @@ extern const char gfar_driver_version[];
 
 #define ECNTRL_INIT_SETTINGS    0x00001000
 #define ECNTRL_TBI_MODE         0x00000020
+#define ECNTRL_R100             0x00000008
 
 #define MRBLR_INIT_SETTINGS     DEFAULT_RX_BUFFER_SIZE
 
@@ -181,10 +196,12 @@ extern const char gfar_driver_version[];
 #define RCTRL_PRSDEP_MASK       0x000000c0
 #define RCTRL_PRSDEP_INIT       0x000000c0
 #define RCTRL_PROM              0x00000008
+#define RCTRL_EMEN              0x00000002
 #define RCTRL_CHECKSUMMING      (RCTRL_IPCSEN \
                 | RCTRL_TUCSEN | RCTRL_PRSDEP_INIT)
 #define RCTRL_EXTHASH           (RCTRL_GHTX)
 #define RCTRL_VLAN              (RCTRL_PRSDEP_INIT)
+#define RCTRL_PADDING(x)        ((x << 16) & RCTRL_PAL_MASK)
 
 
 #define RSTAT_CLEAR_RHALT       0x00800000
@@ -251,28 +268,26 @@ extern const char gfar_driver_version[];
                 IMASK_XFUN | IMASK_RXC | IMASK_BABT | IMASK_DPE \
                 | IMASK_PERR)
 
+/* Fifo management */
+#define FIFO_TX_THR_MASK        0x01ff
+#define FIFO_TX_STARVE_MASK     0x01ff
+#define FIFO_TX_STARVE_OFF_MASK 0x01ff
 
 /* Attribute fields */
 
 /* This enables rx snooping for buffers and descriptors */
-#ifdef CONFIG_GFAR_BDSTASH
 #define ATTR_BDSTASH            0x00000800
-#else
-#define ATTR_BDSTASH            0x00000000
-#endif
 
-#ifdef CONFIG_GFAR_BUFSTASH
 #define ATTR_BUFSTASH           0x00004000
-#define STASH_LENGTH            64
-#else
-#define ATTR_BUFSTASH           0x00000000
-#endif
 
 #define ATTR_SNOOPING           0x000000c0
-#define ATTR_INIT_SETTINGS      (ATTR_SNOOPING \
-                | ATTR_BDSTASH | ATTR_BUFSTASH)
+#define ATTR_INIT_SETTINGS      ATTR_SNOOPING
 
 #define ATTRELI_INIT_SETTINGS   0x0
+#define ATTRELI_EL_MASK         0x3fff0000
+#define ATTRELI_EL(x) (x << 16)
+#define ATTRELI_EI_MASK         0x00003fff
+#define ATTRELI_EI(x) (x)
 
 
 /* TxBD status field bits */
@@ -328,6 +343,7 @@ extern const char gfar_driver_version[];
 #define RXFCB_CTU               0x0400
 #define RXFCB_EIP               0x0200
 #define RXFCB_ETU               0x0100
+#define RXFCB_CSUM_MASK         0x0f00
 #define RXFCB_PERR_MASK         0x000c
 #define RXFCB_PERR_BADL3        0x0008
 
@@ -339,14 +355,7 @@ struct txbd8
 };
 
 struct txfcb {
-        u8      vln:1,
-                ip:1,
-                ip6:1,
-                tup:1,
-                udp:1,
-                cip:1,
-                ctu:1,
-                nph:1;
+        u8      flags;
         u8      reserved;
         u8      l4os;   /* Level 4 Header Offset */
         u8      l3os;   /* Level 3 Header Offset */
@@ -362,14 +371,7 @@ struct rxbd8
 };
 
 struct rxfcb {
-        u16     vln:1,
-                ip:1,
-                ip6:1,
-                tup:1,
-                cip:1,
-                ctu:1,
-                eip:1,
-                etu:1;
+        u16     flags;
         u8      rq;     /* Receive Queue index */
         u8      pro;    /* Layer 4 Protocol */
         u16     reserved;
@@ -688,12 +690,17 @@ struct gfar_private {
         spinlock_t lock;
         unsigned int rx_buffer_size;
         unsigned int rx_stash_size;
+        unsigned int rx_stash_index;
         unsigned int tx_ring_size;
         unsigned int rx_ring_size;
+        unsigned int fifo_threshold;
+        unsigned int fifo_starve;
+        unsigned int fifo_starve_off;
 
         unsigned char vlan_enable:1,
                 rx_csum_enable:1,
-                extended_hash:1;
+                extended_hash:1,
+                bd_stash_en:1;
         unsigned short padding;
         struct vlan_group *vlgrp;
         /* Info structure initialized by board setup code */
@@ -731,6 +738,6 @@ extern void stop_gfar(struct net_device *dev);
 extern void gfar_halt(struct net_device *dev);
 extern void gfar_phy_test(struct mii_bus *bus, struct phy_device *phydev,
                 int enable, u32 regnum, u32 read);
-void gfar_setup_stashing(struct net_device *dev);
+void gfar_init_sysfs(struct net_device *dev);
 
 #endif /* __GIANFAR_H */