netxen: add netxen_nic_ctx.c

Contains rx and tx ring context management and certain
firmware commands for netxen firmware v4.0.0+.

This patch gathers all HW context management code into
netxen_nic_ctx.c.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 268 insertions, 4 deletions

diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 87be0a6ef51..936219010e4 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -84,7 +84,7 @@
 #define TX_RINGSIZE     \
         (sizeof(struct netxen_cmd_buffer) * adapter->max_tx_desc_count)
 #define RCV_BUFFSIZE    \
-        (sizeof(struct netxen_rx_buffer) * rcv_desc->max_rx_desc_count)
+        (sizeof(struct netxen_rx_buffer) * rds_ring->max_rx_desc_count)
 #define find_diff_among(a,b,range) ((a)<(b)?((b)-(a)):((b)+(range)-(a)))
 
 #define NETXEN_NETDEV_STATUS            0x1
@@ -303,7 +303,7 @@ struct netxen_ring_ctx {
 #define netxen_set_cmd_desc_port(cmd_desc, var) \
         ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
 #define netxen_set_cmd_desc_ctxid(cmd_desc, var)        \
-        ((cmd_desc)->port_ctxid |= ((var) & 0xF0))
+        ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
 
 #define netxen_set_cmd_desc_flags(cmd_desc, val)        \
         (cmd_desc)->flags_opcode = ((cmd_desc)->flags_opcode & \
@@ -844,7 +844,7 @@ struct netxen_adapter_stats {
  * Rcv Descriptor Context. One such per Rcv Descriptor. There may
  * be one Rcv Descriptor for normal packets, one for jumbo and may be others.
  */
-struct netxen_rcv_desc_ctx {
+struct nx_host_rds_ring {
         u32 flags;
         u32 producer;
         dma_addr_t phys_addr;
@@ -864,13 +864,270 @@ struct netxen_rcv_desc_ctx {
  * present elsewhere.
  */
 struct netxen_recv_context {
-        struct netxen_rcv_desc_ctx rcv_desc[NUM_RCV_DESC_RINGS];
+        u32 state;
+        u16 context_id;
+        u16 virt_port;
+
+        struct nx_host_rds_ring rds_rings[NUM_RCV_DESC_RINGS];
         u32 status_rx_consumer;
         u32 crb_sts_consumer;   /* reg offset */
         dma_addr_t rcv_status_desc_phys_addr;
         struct status_desc *rcv_status_desc_head;
 };
 
+/* New HW context creation */
+
+#define NX_OS_CRB_RETRY_COUNT   4000
+#define NX_CDRP_SIGNATURE_MAKE(pcifn, version) \
+        (((pcifn) & 0xff) | (((version) & 0xff) << 8) | (0xcafe << 16))
+
+#define NX_CDRP_CLEAR           0x00000000
+#define NX_CDRP_CMD_BIT         0x80000000
+
+/*
+ * All responses must have the NX_CDRP_CMD_BIT cleared
+ * in the crb NX_CDRP_CRB_OFFSET.
+ */
+#define NX_CDRP_FORM_RSP(rsp)   (rsp)
+#define NX_CDRP_IS_RSP(rsp)     (((rsp) & NX_CDRP_CMD_BIT) == 0)
+
+#define NX_CDRP_RSP_OK          0x00000001
+#define NX_CDRP_RSP_FAIL        0x00000002
+#define NX_CDRP_RSP_TIMEOUT     0x00000003
+
+/*
+ * All commands must have the NX_CDRP_CMD_BIT set in
+ * the crb NX_CDRP_CRB_OFFSET.
+ */
+#define NX_CDRP_FORM_CMD(cmd)   (NX_CDRP_CMD_BIT | (cmd))
+#define NX_CDRP_IS_CMD(cmd)     (((cmd) & NX_CDRP_CMD_BIT) != 0)
+
+#define NX_CDRP_CMD_SUBMIT_CAPABILITIES     0x00000001
+#define NX_CDRP_CMD_READ_MAX_RDS_PER_CTX    0x00000002
+#define NX_CDRP_CMD_READ_MAX_SDS_PER_CTX    0x00000003
+#define NX_CDRP_CMD_READ_MAX_RULES_PER_CTX  0x00000004
+#define NX_CDRP_CMD_READ_MAX_RX_CTX         0x00000005
+#define NX_CDRP_CMD_READ_MAX_TX_CTX         0x00000006
+#define NX_CDRP_CMD_CREATE_RX_CTX           0x00000007
+#define NX_CDRP_CMD_DESTROY_RX_CTX          0x00000008
+#define NX_CDRP_CMD_CREATE_TX_CTX           0x00000009
+#define NX_CDRP_CMD_DESTROY_TX_CTX          0x0000000a
+#define NX_CDRP_CMD_SETUP_STATISTICS        0x0000000e
+#define NX_CDRP_CMD_GET_STATISTICS          0x0000000f
+#define NX_CDRP_CMD_DELETE_STATISTICS       0x00000010
+#define NX_CDRP_CMD_SET_MTU                 0x00000012
+#define NX_CDRP_CMD_MAX                     0x00000013
+
+#define NX_RCODE_SUCCESS                0
+#define NX_RCODE_NO_HOST_MEM            1
+#define NX_RCODE_NO_HOST_RESOURCE       2
+#define NX_RCODE_NO_CARD_CRB            3
+#define NX_RCODE_NO_CARD_MEM            4
+#define NX_RCODE_NO_CARD_RESOURCE       5
+#define NX_RCODE_INVALID_ARGS           6
+#define NX_RCODE_INVALID_ACTION         7
+#define NX_RCODE_INVALID_STATE          8
+#define NX_RCODE_NOT_SUPPORTED          9
+#define NX_RCODE_NOT_PERMITTED          10
+#define NX_RCODE_NOT_READY              11
+#define NX_RCODE_DOES_NOT_EXIST         12
+#define NX_RCODE_ALREADY_EXISTS         13
+#define NX_RCODE_BAD_SIGNATURE          14
+#define NX_RCODE_CMD_NOT_IMPL           15
+#define NX_RCODE_CMD_INVALID            16
+#define NX_RCODE_TIMEOUT                17
+#define NX_RCODE_CMD_FAILED             18
+#define NX_RCODE_MAX_EXCEEDED           19
+#define NX_RCODE_MAX                    20
+
+#define NX_DESTROY_CTX_RESET            0
+#define NX_DESTROY_CTX_D3_RESET         1
+#define NX_DESTROY_CTX_MAX              2
+
+/*
+ * Capabilities
+ */
+#define NX_CAP_BIT(class, bit)          (1 << bit)
+#define NX_CAP0_LEGACY_CONTEXT          NX_CAP_BIT(0, 0)
+#define NX_CAP0_MULTI_CONTEXT           NX_CAP_BIT(0, 1)
+#define NX_CAP0_LEGACY_MN               NX_CAP_BIT(0, 2)
+#define NX_CAP0_LEGACY_MS               NX_CAP_BIT(0, 3)
+#define NX_CAP0_CUT_THROUGH             NX_CAP_BIT(0, 4)
+#define NX_CAP0_LRO                     NX_CAP_BIT(0, 5)
+#define NX_CAP0_LSO                     NX_CAP_BIT(0, 6)
+#define NX_CAP0_JUMBO_CONTIGUOUS        NX_CAP_BIT(0, 7)
+#define NX_CAP0_LRO_CONTIGUOUS          NX_CAP_BIT(0, 8)
+
+/*
+ * Context state
+ */
+#define NX_HOST_CTX_STATE_FREED         0
+#define NX_HOST_CTX_STATE_ALLOCATED     1
+#define NX_HOST_CTX_STATE_ACTIVE        2
+#define NX_HOST_CTX_STATE_DISABLED      3
+#define NX_HOST_CTX_STATE_QUIESCED      4
+#define NX_HOST_CTX_STATE_MAX           5
+
+/*
+ * Rx context
+ */
+
+typedef struct {
+        u64 host_phys_addr;     /* Ring base addr */
+        u32 ring_size;          /* Ring entries */
+        u16 msi_index;
+        u16 rsvd;               /* Padding */
+} nx_hostrq_sds_ring_t;
+
+typedef struct {
+        u64 host_phys_addr;     /* Ring base addr */
+        u64 buff_size;          /* Packet buffer size */
+        u32 ring_size;          /* Ring entries */
+        u32 ring_kind;          /* Class of ring */
+} nx_hostrq_rds_ring_t;
+
+typedef struct {
+        u64 host_rsp_dma_addr;  /* Response dma'd here */
+        u32 capabilities[4];    /* Flag bit vector */
+        u32 host_int_crb_mode;  /* Interrupt crb usage */
+        u32 host_rds_crb_mode;  /* RDS crb usage */
+        /* These ring offsets are relative to data[0] below */
+        u32 rds_ring_offset;    /* Offset to RDS config */
+        u32 sds_ring_offset;    /* Offset to SDS config */
+        u16 num_rds_rings;      /* Count of RDS rings */
+        u16 num_sds_rings;      /* Count of SDS rings */
+        u16 rsvd1;              /* Padding */
+        u16 rsvd2;              /* Padding */
+        u8  reserved[128];      /* reserve space for future expansion*/
+        /* MUST BE 64-bit aligned.
+           The following is packed:
+           - N hostrq_rds_rings
+           - N hostrq_sds_rings */
+        char data[0];
+} nx_hostrq_rx_ctx_t;
+
+typedef struct {
+        u32 host_producer_crb;  /* Crb to use */
+        u32 rsvd1;              /* Padding */
+} nx_cardrsp_rds_ring_t;
+
+typedef struct {
+        u32 host_consumer_crb;  /* Crb to use */
+        u32 interrupt_crb;      /* Crb to use */
+} nx_cardrsp_sds_ring_t;
+
+typedef struct {
+        /* These ring offsets are relative to data[0] below */
+        u32 rds_ring_offset;    /* Offset to RDS config */
+        u32 sds_ring_offset;    /* Offset to SDS config */
+        u32 host_ctx_state;     /* Starting State */
+        u32 num_fn_per_port;    /* How many PCI fn share the port */
+        u16 num_rds_rings;      /* Count of RDS rings */
+        u16 num_sds_rings;      /* Count of SDS rings */
+        u16 context_id;         /* Handle for context */
+        u8  phys_port;          /* Physical id of port */
+        u8  virt_port;          /* Virtual/Logical id of port */
+        u8  reserved[128];      /* save space for future expansion */
+        /*  MUST BE 64-bit aligned.
+           The following is packed:
+           - N cardrsp_rds_rings
+           - N cardrs_sds_rings */
+        char data[0];
+} nx_cardrsp_rx_ctx_t;
+
+#define SIZEOF_HOSTRQ_RX(HOSTRQ_RX, rds_rings, sds_rings)       \
+        (sizeof(HOSTRQ_RX) +                                    \
+        (rds_rings)*(sizeof(nx_hostrq_rds_ring_t)) +            \
+        (sds_rings)*(sizeof(nx_hostrq_sds_ring_t)))
+
+#define SIZEOF_CARDRSP_RX(CARDRSP_RX, rds_rings, sds_rings)     \
+        (sizeof(CARDRSP_RX) +                                   \
+        (rds_rings)*(sizeof(nx_cardrsp_rds_ring_t)) +           \
+        (sds_rings)*(sizeof(nx_cardrsp_sds_ring_t)))
+
+/*
+ * Tx context
+ */
+
+typedef struct {
+        u64 host_phys_addr;     /* Ring base addr */
+        u32 ring_size;          /* Ring entries */
+        u32 rsvd;               /* Padding */
+} nx_hostrq_cds_ring_t;
+
+typedef struct {
+        u64 host_rsp_dma_addr;  /* Response dma'd here */
+        u64 cmd_cons_dma_addr;  /*  */
+        u64 dummy_dma_addr;     /*  */
+        u32 capabilities[4];    /* Flag bit vector */
+        u32 host_int_crb_mode;  /* Interrupt crb usage */
+        u32 rsvd1;              /* Padding */
+        u16 rsvd2;              /* Padding */
+        u16 interrupt_ctl;
+        u16 msi_index;
+        u16 rsvd3;              /* Padding */
+        nx_hostrq_cds_ring_t cds_ring;  /* Desc of cds ring */
+        u8  reserved[128];      /* future expansion */
+} nx_hostrq_tx_ctx_t;
+
+typedef struct {
+        u32 host_producer_crb;  /* Crb to use */
+        u32 interrupt_crb;      /* Crb to use */
+} nx_cardrsp_cds_ring_t;
+
+typedef struct {
+        u32 host_ctx_state;     /* Starting state */
+        u16 context_id;         /* Handle for context */
+        u8  phys_port;          /* Physical id of port */
+        u8  virt_port;          /* Virtual/Logical id of port */
+        nx_cardrsp_cds_ring_t cds_ring; /* Card cds settings */
+        u8  reserved[128];      /* future expansion */
+} nx_cardrsp_tx_ctx_t;
+
+#define SIZEOF_HOSTRQ_TX(HOSTRQ_TX)     (sizeof(HOSTRQ_TX))
+#define SIZEOF_CARDRSP_TX(CARDRSP_TX)   (sizeof(CARDRSP_TX))
+
+/* CRB */
+
+#define NX_HOST_RDS_CRB_MODE_UNIQUE     0
+#define NX_HOST_RDS_CRB_MODE_SHARED     1
+#define NX_HOST_RDS_CRB_MODE_CUSTOM     2
+#define NX_HOST_RDS_CRB_MODE_MAX        3
+
+#define NX_HOST_INT_CRB_MODE_UNIQUE     0
+#define NX_HOST_INT_CRB_MODE_SHARED     1
+#define NX_HOST_INT_CRB_MODE_NORX       2
+#define NX_HOST_INT_CRB_MODE_NOTX       3
+#define NX_HOST_INT_CRB_MODE_NORXTX     4
+
+
+/* MAC */
+
+#define MC_COUNT_P2     16
+#define MC_COUNT_P3     38
+
+#define NETXEN_MAC_NOOP 0
+#define NETXEN_MAC_ADD  1
+#define NETXEN_MAC_DEL  2
+
+typedef struct nx_mac_list_s {
+        struct nx_mac_list_s *next;
+        uint8_t mac_addr[MAX_ADDR_LEN];
+} nx_mac_list_t;
+
+typedef struct {
+        u64 qhdr;
+        u64 req_hdr;
+        u64 words[6];
+} nic_request_t;
+
+typedef struct {
+        u8 op;
+        u8 tag;
+        u8 mac_addr[6];
+} nx_mac_req_t;
+
+
 #define NETXEN_NIC_MSI_ENABLED          0x02
 #define NETXEN_NIC_MSIX_ENABLED         0x04
 #define NETXEN_IS_MSI_FAMILY(adapter) \
@@ -899,11 +1156,13 @@ struct netxen_adapter {
         int mtu;
         int portnum;
         u8 physical_port;
+        u16 tx_context_id;
 
         uint8_t         mc_enabled;
         uint8_t         max_mc_count;
 
         struct netxen_legacy_intr_set legacy_intr;
+        u32     crb_intr_mask;
 
         struct work_struct watchdog_task;
         struct timer_list watchdog_timer;
@@ -926,6 +1185,8 @@ struct netxen_adapter {
         u32 max_jumbo_rx_desc_count;
         u32 max_lro_rx_desc_count;
 
+        int max_rds_rings;
+
         u32 flags;
         u32 irq;
         int driver_mismatch;
@@ -1144,7 +1405,10 @@ void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx,
 int netxen_process_cmd_ring(struct netxen_adapter *adapter);
 u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctx, int max);
 void netxen_nic_set_multi(struct net_device *netdev);
+
+u32 nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, u32 mtu);
 int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu);
+
 int netxen_nic_set_mac(struct net_device *netdev, void *p);
 struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);