solos: FPGA and firmware update support.

This is just a straight pull in of changes, syncing us up to 0.07 from
openadsl.sf.net

Signed-off-by: Nathan Williams <nathan@traverse.com.au>
Signed-off-by: Simon Farnsworth <simon@farnz.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 3daa3a3..2b472c8 100644 (file)
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -9,6 +9,7 @@
  *
  * Authors: Nathan Williams <nathan@traverse.com.au>
  *          David Woodhouse <dwmw2@infradead.org>
+ *          Treker Chen <treker@xrio.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -36,8 +37,9 @@
 #include <linux/sysfs.h>
 #include <linux/device.h>
 #include <linux/kobject.h>
+#include <linux/firmware.h>
 
-#define VERSION "0.04"
+#define VERSION "0.07"
 #define PTAG "solos-pci"
 
 #define CONFIG_RAM_SIZE        128
@@ -45,16 +47,27 @@
 #define IRQ_EN_ADDR    0x78
 #define FPGA_VER       0x74
 #define IRQ_CLEAR      0x70
-#define BUG_FLAG       0x6C
+#define WRITE_FLASH    0x6C
+#define PORTS          0x68
+#define FLASH_BLOCK    0x64
+#define FLASH_BUSY     0x60
+#define FPGA_MODE      0x5C
+#define FLASH_MODE     0x58
 
 #define DATA_RAM_SIZE  32768
 #define BUF_SIZE       4096
+#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)
 
 static int debug = 0;
 static int atmdebug = 0;
+static int firmware_upgrade = 0;
+static int fpga_upgrade = 0;
 
 struct pkt_hdr {
        __le16 size;
@@ -80,6 +93,7 @@ struct solos_card {
        spinlock_t cli_queue_lock;
        struct sk_buff_head tx_queue[4];
        struct sk_buff_head cli_queue[4];
+       int flash_chip;
 };
 
 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
@@ -90,11 +104,19 @@ MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
 MODULE_PARM_DESC(debug, "Enable Loopback");
 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_param(debug, int, 0444);
 module_param(atmdebug, int, 0644);
+module_param(firmware_upgrade, int, 0444);
+module_param(fpga_upgrade, int, 0444);
 
 static int opens;
+static struct firmware *fw;
+static int flash_offset;
 
+void flash_upgrade(struct solos_card *);
+void flash_write(struct solos_card *);
 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
                       struct atm_vcc *vcc);
 static int fpga_tx(struct solos_card *);
@@ -180,6 +202,131 @@ static ssize_t console_store(struct device *dev, struct device_attribute *attr,
 
 static DEVICE_ATTR(console, 0644, console_show, console_store);
 
+void flash_upgrade(struct solos_card *card){
+       uint32_t data32 = 0;
+       int blocksize = 0;
+       int numblocks = 0;
+       dev_info(&card->dev->dev, "Flash upgrade started\n");
+       if (card->flash_chip == 0) {
+               if (request_firmware((const struct firmware **)&fw,
+                               "solos-FPGA.bin",&card->dev->dev))
+               {
+                       dev_info(&card->dev->dev,
+                                       "Failed to find firmware\n");
+                       return;
+               }
+               blocksize = FPGA_BLOCK;
+       } else {
+               if (request_firmware((const struct firmware **)&fw,
+                               "solos-Firmware.bin",&card->dev->dev))
+               {
+                       dev_info(&card->dev->dev,
+                                       "Failed to find firmware\n");
+                       return;
+               }
+               blocksize = SOLOS_BLOCK;
+       }
+       numblocks = fw->size/blocksize;
+       dev_info(&card->dev->dev, "Firmware size: %d\n", fw->size);
+       dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
+       
+               
+       dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
+       iowrite32(1, card->config_regs + FPGA_MODE);
+       data32 = ioread32(card->config_regs + FPGA_MODE); 
+       /*Set mode to Chip Erase*/
+       if (card->flash_chip == 0) {
+               dev_info(&card->dev->dev, 
+                               "Set FPGA Flash mode to FPGA Chip Erase\n");
+       } else {
+               dev_info(&card->dev->dev, 
+                               "Set FPGA Flash mode to Solos Chip Erase\n");
+       }
+       iowrite32((card->flash_chip * 2), card->config_regs + FLASH_MODE);
+       flash_offset = 0;
+       iowrite32(1, card->config_regs + WRITE_FLASH);
+       return;
+}
+
+void flash_write(struct solos_card *card){
+       int block;
+       int block_num;
+       int blocksize;
+       int i;
+       uint32_t data32 = 0;
+
+       /*Clear write flag*/
+       iowrite32(0, card->config_regs + WRITE_FLASH);
+       /*Set mode to Block Write*/
+       /*dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n");*/
+       iowrite32(((card->flash_chip * 2) + 1), card->config_regs + FLASH_MODE);
+
+       /*When finished programming flash, release firmware and exit*/
+       if (fw->size - flash_offset == 0) {
+               //release_firmware(fw); /* This crashes for some reason */
+               iowrite32(0, card->config_regs + WRITE_FLASH);
+               iowrite32(0, card->config_regs + FPGA_MODE);
+               iowrite32(0, card->config_regs + FLASH_MODE);
+               dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
+               return;
+       }
+       if (card->flash_chip == 0) {
+               blocksize = FPGA_BLOCK;
+       } else {
+               blocksize = SOLOS_BLOCK;
+       }
+       
+       /*Calculate block size*/
+       if ((fw->size - flash_offset) > blocksize) {
+               block = blocksize;
+       } else {
+               block = fw->size - flash_offset;
+       }
+       block_num = flash_offset / blocksize;
+       //dev_info(&card->dev->dev, "block %d/%d\n",block_num + 1,(fw->size/512/8));
+
+       /*Copy block into RAM*/
+       for(i=0;i<block;i++){
+               if(i%4 == 0){
+                       //dev_info(&card->dev->dev, "i: %d\n", i);
+                       data32=0x00000000;
+               }
+               
+               switch(i%4){
+               case 0:
+                       data32 |= 0x0000FF00 & 
+                               (*(fw->data + i + flash_offset) << 8);
+                       break;
+               case 1:
+                       data32 |= 0x000000FF & *(fw->data + i + flash_offset);
+                       break;
+               case 2:
+                       data32 |= 0xFF000000 &
+                                       (*(fw->data + i + flash_offset) << 24);
+                       break;
+               case 3:
+                       data32 |= 0x00FF0000 &
+                                       (*(fw->data + i + flash_offset) << 16);
+                       break;
+               }
+
+               if (i%4 == 3) {
+                       iowrite32(data32, RX_BUF(card, 3) + i - 3);
+               }
+       }
+       i--;
+       if (i%4 != 3) {
+               iowrite32(data32, RX_BUF(card, 3) + i - (i%4));
+       }
+
+       /*Specify block number and then trigger flash write*/
+       iowrite32(block_num, card->config_regs + FLASH_BLOCK);
+       iowrite32(1, card->config_regs + WRITE_FLASH);
+//     iowrite32(0, card->config_regs + WRITE_FLASH);
+       flash_offset += block;
+       return;
+}
+
 static irqreturn_t solos_irq(int irq, void *dev_id)
 {
        struct solos_card *card = dev_id;
@@ -207,6 +354,17 @@ void solos_bh(unsigned long card_arg)
        uint32_t card_flags;
        uint32_t tx_mask;
        uint32_t rx_done = 0;
+       uint32_t data32;
+
+       data32 = ioread32(card->config_regs + FPGA_MODE); 
+       if (data32 != 0) {
+               data32 = ioread32(card->config_regs + FLASH_BUSY); 
+               if (data32 == 0) {
+                       flash_write(card);
+               }       
+               return;
+       }
+               
 
        card_flags = ioread32(card->config_regs + FLAGS_ADDR);
 
@@ -680,6 +838,15 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
        // Enable IRQs
        iowrite32(1, card->config_regs + IRQ_EN_ADDR);
 
+       if(firmware_upgrade != 0){
+               card->flash_chip = 1;
+               flash_upgrade(card);
+       } else {
+               if(fpga_upgrade != 0){
+                       card->flash_chip = 0;
+                       flash_upgrade(card);
+               }
+       }
        return 0;
 
  out_unmap_both: