solos: support new FPGA RAM layout
Nathan Williams [Wed, 25 Mar 2009 09:27:37 +0000 (20:27 +1100)]
Buffer sizes have been changed to 2048 bytes.
Flash upgrades use a dedicated RAM block.
Add support for daughterboard.

Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/atm/solos-pci.c

index bc3079d..bfef8d2 100644 (file)
 #define RX_DMA_ADDR(port)      (0x30 + (4 * (port)))
 
 #define DATA_RAM_SIZE  32768
-#define BUF_SIZE       4096
+#define BUF_SIZE       2048
+#define OLD_BUF_SIZE   4096 /* For FPGA versions <= 2*/
 #define FPGA_PAGE      528 /* FPGA flash page size*/
 #define SOLOS_PAGE     512 /* Solos flash page size*/
 #define FPGA_BLOCK     (FPGA_PAGE * 8) /* FPGA flash block size*/
 #define SOLOS_BLOCK    (SOLOS_PAGE * 8) /* Solos flash block size*/
 
-#define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
-#define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
+#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
+#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
+#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
 
 #define RX_DMA_SIZE    2048
 
+#define FPGA_VERSION(a,b) (((a) << 8) + (b))
+#define LEGACY_BUFFERS 2
+#define DMA_SUPPORTED  4
+
 static int reset = 0;
 static int atmdebug = 0;
 static int firmware_upgrade = 0;
 static int fpga_upgrade = 0;
+static int db_firmware_upgrade = 0;
+static int db_fpga_upgrade = 0;
 
 struct pkt_hdr {
        __le16 size;
@@ -116,6 +124,8 @@ struct solos_card {
        wait_queue_head_t param_wq;
        wait_queue_head_t fw_wq;
        int using_dma;
+       int fpga_version;
+       int buffer_size;
 };
 
 
@@ -136,10 +146,14 @@ MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
 MODULE_PARM_DESC(atmdebug, "Print ATM data");
 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
+MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
+MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
 module_param(reset, int, 0444);
 module_param(atmdebug, int, 0644);
 module_param(firmware_upgrade, int, 0444);
 module_param(fpga_upgrade, int, 0444);
+module_param(db_firmware_upgrade, int, 0444);
+module_param(db_fpga_upgrade, int, 0444);
 
 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
                       struct atm_vcc *vcc);
@@ -517,10 +531,32 @@ static int flash_upgrade(struct solos_card *card, int chip)
        if (chip == 0) {
                fw_name = "solos-FPGA.bin";
                blocksize = FPGA_BLOCK;
-       } else {
+       } 
+       
+       if (chip == 1) {
                fw_name = "solos-Firmware.bin";
                blocksize = SOLOS_BLOCK;
        }
+       
+       if (chip == 2){
+               if (card->fpga_version > LEGACY_BUFFERS){
+                       fw_name = "solos-db-FPGA.bin";
+                       blocksize = FPGA_BLOCK;
+               } else {
+                       dev_info(&card->dev->dev, "FPGA version doesn't support daughter board upgrades\n");
+                       return -EPERM;
+               }
+       }
+       
+       if (chip == 3){
+               if (card->fpga_version > LEGACY_BUFFERS){
+                       fw_name = "solos-Firmware.bin";
+                       blocksize = SOLOS_BLOCK;
+               } else {
+               dev_info(&card->dev->dev, "FPGA version doesn't support daughter board upgrades\n");
+               return -EPERM;
+               }
+       }
 
        if (request_firmware(&fw, fw_name, &card->dev->dev))
                return -ENOENT;
@@ -536,8 +572,10 @@ static int flash_upgrade(struct solos_card *card, int chip)
        data32 = ioread32(card->config_regs + FPGA_MODE); 
 
        /* Set mode to Chip Erase */
-       dev_info(&card->dev->dev, "Set FPGA Flash mode to %s Chip Erase\n",
-                chip?"Solos":"FPGA");
+       if(chip == 0 || chip == 2)
+               dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
+       if(chip == 1 || chip == 3)
+               dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
        iowrite32((chip * 2), card->config_regs + FLASH_MODE);
 
 
@@ -557,7 +595,10 @@ static int flash_upgrade(struct solos_card *card, int chip)
                /* Copy block to buffer, swapping each 16 bits */
                for(i = 0; i < blocksize; i += 4) {
                        uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
-                       iowrite32(word, RX_BUF(card, 3) + i);
+                       if(card->fpga_version > LEGACY_BUFFERS)
+                               iowrite32(word, FLASH_BUF + i);
+                       else
+                               iowrite32(word, RX_BUF(card, 3) + i);
                }
 
                /* Specify block number and then trigger flash write */
@@ -1094,12 +1135,18 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
        fpga_ver = (data32 & 0x0000FFFF);
        major_ver = ((data32 & 0xFF000000) >> 24);
        minor_ver = ((data32 & 0x00FF0000) >> 16);
+       card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
+       if (card->fpga_version > LEGACY_BUFFERS)
+               card->buffer_size = BUF_SIZE;
+       else
+               card->buffer_size = OLD_BUF_SIZE;
        dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
                 major_ver, minor_ver, fpga_ver);
 
-       if (0 && fpga_ver > 27)
+       if (card->fpga_version >= DMA_SUPPORTED){
                card->using_dma = 1;
-       else {
+       } else {
+               card->using_dma = 0;
                /* Set RX empty flag for all ports */
                iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
        }
@@ -1131,6 +1178,12 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
        if (firmware_upgrade)
                flash_upgrade(card, 1);
 
+       if (db_fpga_upgrade)
+               flash_upgrade(card, 2);
+
+       if (db_firmware_upgrade)
+               flash_upgrade(card, 3);
+
        err = atm_init(card);
        if (err)
                goto out_free_irq;