minor ATA tweaks

From @Wack0's branch

Author: dingusdev

devices/common/ata/atabasedevice.cpp

@@ -107,7 +107,7 @@ uint16_t AtaBaseDevice::read(const uint8_t reg_addr) {
 void AtaBaseDevice::write(const uint8_t reg_addr, const uint16_t value) {
     switch (reg_addr) {
     case ATA_Reg::DATA:
-        if (this->has_data()) {
+        if (is_selected() && this->has_data()) {
             *this->cur_data_ptr++ = BYTESWAP_16(value);
             this->chunk_cnt -= 2;
             if (this->chunk_cnt <= 0) {

devices/common/ata/atapibasedevice.cpp

@@ -149,6 +149,11 @@ int AtapiBaseDevice::perform_command() {
     this->r_status |= BSY;
 
     switch (this->r_command) {
+    case ATAPI_SOFT_RESET:
+        this->device_reset(true);
+        this->device_set_signature();
+        this->r_status &= ~BSY;
+        break;
     case ATAPI_PACKET:
         this->data_ptr = (uint16_t *)this->cmd_pkt;
         this->xfer_cnt = sizeof(this->cmd_pkt);